Screw Conveyor at work due to the working environment, all sorts of problems, such as conveyed material can make the machine to produce the phenomenon such as scaling, therefore completes the screw conveyor is very important for the maintenance.
Screw conveyor bearings for machine full load, its main function is to support the mechanical body of revolution, to reduce the equipment in the process of transmission, mechanical load, friction coefficient and bearing of the normal work of the maintenance of conveyor is very important, good lubrication of bearing life also has a great relationship, it directly affects the service life of machine and availability, and requirements into lubricating oil must be clean and seal must be good this machine. So in use to do the following:
1, the main oil (1) rotating bearing (2) roll bearing (3) all the gear bearing, sliding plane (4) activities.
2, the tire of the newly installed prone to loosening should be check regularly.
3, pay attention to each part of the machine working normally.
4, pay attention to check the easy wear parts wear degree, attention to replace the worn parts at any time.
5, put activity unit chassis plane, should be out dirt and other material to avoid activities when machine can't broken material bearing can't move on the chassis, so that a serious accident.
6, bearing high oil temperature rise, should immediately stop to check the reason.
7, the rotation gear in sound operation, if there is impact should immediately stop check, and remove.
g
2013年12月30日星期一
2013年12月27日星期五
Food conveyor belt running deviation and skid processing method
First:
spiral hydraulic tensioning belt conveyor tensioning or skid using
spiral tension or hydraulic tensioning appeared sliding adjustable
leather belt conveyor tensioning trip to increase tension. But,
sometimes the tension line cheng is not enough, created permanent
deformation belt, the belt can be cut to a sulfide back into line.
The
second: in the use of nylon tape or EP is required tension travel is
longer, can also be used when insufficient trip to sulfur or increase
the tension to solve
Third: heavy hammer tensioning Belt Conveyor belt skid to use heavy hammer tensioning device of belt
conveyor in the belt creep can add weight to solve, when added to the
belt does not skid. But should not add too much, lest make the belt to
bear too much unnecessary tension and reduce the service life of the
belt.
2013年12月20日星期五
The friction belt conveyor driven workflow
The Belt Conveyor is used in all walks of life, such as power plant coal
conveying, steel mills and cement plant material conveying, loading and
unloading, etc and the port within the ship by belt conveyor. According
to the requirements of process flow, the function of belt conveyor by
material from one or more points is very flexible, can also turn to more
or a few segments discharge. When feeding on a few points to the
conveyor belt at the same time (such as coal preparation plant of coal
under the conveyor) or a little along the length direction of the belt
conveyor by uniform feeding equipment to transport brings, belt conveyor
has become a major transport corridors.
In the process of using belt conveyor to note:
1,
the throughput is in the material density of 1.0 t/m3-1.6 t/m3,
conveyor inclination of 18 ° or less, under the condition of material
accumulation Angle of 30 °.
2, may transport the material density under 2.5 t/m2.
3, delivery length is not limited to the values listed in the table, we can manufacture according to the needs of the users.
2013年11月19日星期二
Bucket elevator enclosure installation
Bucket Elevator factory is divided into several parts , so refer to the following in accordance with site-specific installation order of the various components shipped to the installation site in advance the appropriate location , depending on the installation master plan , refer to the following requirements for installation :
1 according to the drawings, based on the anchor bolt holes checked .
2 would be fixed on the basis of the lower section and the leveling datum ( the flange ) . On the flange surface and the horizontal parallelism tolerance is 1/1000mm. Adjust the horn must be close to the anchor bolts.
3 chassis and connection box installed, peripheral flange must be neat , there should be significant dislocation. The connection between the housing flange pad into 3mm thick asbestos rope , asbestos rope can be coated with some butter , asbestos rope positioned to facilitate and increase the sealing effect. Mat asbestos rope , first put on the chassis flanges bolts, then bolt the outer perimeter of the flange connection .
4 chassis mounted to a certain height ( according to the technical design ) . Install outdoor ( internal ) fixing bracket, to be securely fixed to the nearest building. Mounting bracket generally an interval of 8 ~ 10m , mounting bracket allow limitations hoist in the vertical direction of the free expansion .
5 If you have non-standard chassis, generally installed in the upper section of the festival under the first position, if you have special requirements, can be installed in a different location.
6 side mounted chassis, while measuring the vertical cabinet .
7 The upper section of the installation, to calibrate the spindle centerline , so that the lower level and with the centerline of the shaft parallel alignment. Upper shaft parallel with the horizontal centerline tolerance is 0.3/1000mm, down axis perpendicular plane with error less than 4mm, the upper and lower rollers face the same vertical plane error is less than 5mm.
8 drives in the elevator factory has been connected with the upper section of the drive spindle is good, and install location, taking into account the vibration during transportation equipment factory , as well as lifting may occur during collisions. Therefore , the upper section
1 according to the drawings, based on the anchor bolt holes checked .
2 would be fixed on the basis of the lower section and the leveling datum ( the flange ) . On the flange surface and the horizontal parallelism tolerance is 1/1000mm. Adjust the horn must be close to the anchor bolts.
3 chassis and connection box installed, peripheral flange must be neat , there should be significant dislocation. The connection between the housing flange pad into 3mm thick asbestos rope , asbestos rope can be coated with some butter , asbestos rope positioned to facilitate and increase the sealing effect. Mat asbestos rope , first put on the chassis flanges bolts, then bolt the outer perimeter of the flange connection .
4 chassis mounted to a certain height ( according to the technical design ) . Install outdoor ( internal ) fixing bracket, to be securely fixed to the nearest building. Mounting bracket generally an interval of 8 ~ 10m , mounting bracket allow limitations hoist in the vertical direction of the free expansion .
5 If you have non-standard chassis, generally installed in the upper section of the festival under the first position, if you have special requirements, can be installed in a different location.
6 side mounted chassis, while measuring the vertical cabinet .
7 The upper section of the installation, to calibrate the spindle centerline , so that the lower level and with the centerline of the shaft parallel alignment. Upper shaft parallel with the horizontal centerline tolerance is 0.3/1000mm, down axis perpendicular plane with error less than 4mm, the upper and lower rollers face the same vertical plane error is less than 5mm.
8 drives in the elevator factory has been connected with the upper section of the drive spindle is good, and install location, taking into account the vibration during transportation equipment factory , as well as lifting may occur during collisions. Therefore , the upper section
2013年11月5日星期二
Use and maintenance of the screw conveyor
The following is a Screw Conveyor use and maintenance of specific instructions :
Screw conveyor is used for conveying powder , granular, small block materials, general-purpose transportation equipment, all kinds of bearings are in the dust in the work , so the working conditions so reasonable operation and maintenance of the screw conveyor to a more great significance , screw conveyor operation and maintenance of the main requirements are as follows :
1 screw conveyor should be no load starting , that no material in the shell when starting, after starting the beginning of the screw conveyor feeding .
(2) the initial feed screw conveyor , the feed rate should be increased gradually until it reaches the conveying capacity , feeding should be uniform, or likely to cause transport of materials product plugs, drive overload , so that the whole machine early damage.
3 In order to ensure no load starting screw machine requirements , conveyor feeding should be stopped before stopping , and other material inside the chassis rear was completely lost all stopped .
4 material being transported shall not be mixed with chunks of hard materials to avoid causing death card spiral screw machine damage.
5 In use frequently viewed screw machine working status of each component , pay attention to the fasteners are loose , if you find loose parts , they should immediately tighten the screws , so that re-tighten .
6 It should be coupled with special attention to the helical axis of the screw is loose, fall or cut, such as the discovery of such phenomena , it should be immediately stopped , and correct it.
7 Screw the lid of the machine is running should not be removed, so as to avoid accidents.
8 Screw irregularities occurred during operation should be checked , and the elimination of , not forced to operate .
9 Screw the moving parts should be lubricated regularly .
( A ) within the application reducer drive gasoline engine lubricants HQ-10 (GB485-81) oil change once every 3-6 months .
( 2 ) spiral ends with lithium grease inside the bearing , once every half note , 5 g .
( 3 ) screw machine hanging bearing , the choice of M1 category , including 80000 type bearing assembly has infiltrated the oil , usually as little fuel ; every 3-5 months , together with the hanging hanging shaft bearing body removed , remove the seal circle, the hanging bearing and 80000 bearing immersed in molten lubrication with grease a cooling and re- installed to use , such as nylon ring damage should be replaced, for one year , using the above method maintenance once again , be good results.
( 4 ) screw machine hanging bearing , use M2 category , class Note grease, greasing each hanging bush 5 g ; temperature materials should be used ZN2 sodium based grease (GB492-77); using self-lubricating bearings, it should be added a small amount of grease.
Screw conveyor is used for conveying powder , granular, small block materials, general-purpose transportation equipment, all kinds of bearings are in the dust in the work , so the working conditions so reasonable operation and maintenance of the screw conveyor to a more great significance , screw conveyor operation and maintenance of the main requirements are as follows :
1 screw conveyor should be no load starting , that no material in the shell when starting, after starting the beginning of the screw conveyor feeding .
(2) the initial feed screw conveyor , the feed rate should be increased gradually until it reaches the conveying capacity , feeding should be uniform, or likely to cause transport of materials product plugs, drive overload , so that the whole machine early damage.
3 In order to ensure no load starting screw machine requirements , conveyor feeding should be stopped before stopping , and other material inside the chassis rear was completely lost all stopped .
4 material being transported shall not be mixed with chunks of hard materials to avoid causing death card spiral screw machine damage.
5 In use frequently viewed screw machine working status of each component , pay attention to the fasteners are loose , if you find loose parts , they should immediately tighten the screws , so that re-tighten .
6 It should be coupled with special attention to the helical axis of the screw is loose, fall or cut, such as the discovery of such phenomena , it should be immediately stopped , and correct it.
7 Screw the lid of the machine is running should not be removed, so as to avoid accidents.
8 Screw irregularities occurred during operation should be checked , and the elimination of , not forced to operate .
9 Screw the moving parts should be lubricated regularly .
( A ) within the application reducer drive gasoline engine lubricants HQ-10 (GB485-81) oil change once every 3-6 months .
( 2 ) spiral ends with lithium grease inside the bearing , once every half note , 5 g .
( 3 ) screw machine hanging bearing , the choice of M1 category , including 80000 type bearing assembly has infiltrated the oil , usually as little fuel ; every 3-5 months , together with the hanging hanging shaft bearing body removed , remove the seal circle, the hanging bearing and 80000 bearing immersed in molten lubrication with grease a cooling and re- installed to use , such as nylon ring damage should be replaced, for one year , using the above method maintenance once again , be good results.
( 4 ) screw machine hanging bearing , use M2 category , class Note grease, greasing each hanging bush 5 g ; temperature materials should be used ZN2 sodium based grease (GB492-77); using self-lubricating bearings, it should be added a small amount of grease.
Belt conveyor reducer broken shaft failure analysis
Belt Conveyor gear reducer occur at off-axis high-speed shaft , the most common is to use the first level is the vertical gear bevel gear shaft speed shaft . The main reasons are :
First, the speed reducer shaft design strength is not enough
Generally occurs in the shaft shoulder broken shaft after fracture usually flush . Because here there fillet vertical vibrating conveyor , prone to fatigue damage, such as rounded corners make the gear is too small in a short period of time broken shaft . This happens should be replaced or modified gear reducer design.
Second, the high-speed shaft misalignment
In most cases do not occur off-axis motor shaft screw conveyor , it is because the motor shaft materials are generally 45 steel , motor shaft fairly thick, stress concentration is better, so do not usually break the inertia motor shaft vibration conveyor. Motor shaft and reducer speed shaft misalignment causes the input shaft when increased radial load , increase the bending axis , long-term operation will occur off -axis phenomenon . In the installation and maintenance of its location should be carefully adjusted to ensure that two concentric shafts .
Third, the dual motor drive in case of off-axis
Belt conveyor drive past without using fluid couplings are more prone to this type of situation , because the two motors run at startup and speed synchronization and the force balance is difficult to guarantee . Dual motor drive is on the same drive gear equipped with two rollers and two motors. Now, most have adopted a fluid coupling less off -axis phenomenon occurs, but should pay attention to the amount of fuel coupling can not be too much , so it has a torque limiting coupling effects and improve the life of the vibrating conveyor . High-speed shaft of the gear unit design or selection of smaller margin more likely to occur when the phenomenon of broken shaft .
First, the speed reducer shaft design strength is not enough
Generally occurs in the shaft shoulder broken shaft after fracture usually flush . Because here there fillet vertical vibrating conveyor , prone to fatigue damage, such as rounded corners make the gear is too small in a short period of time broken shaft . This happens should be replaced or modified gear reducer design.
Second, the high-speed shaft misalignment
In most cases do not occur off-axis motor shaft screw conveyor , it is because the motor shaft materials are generally 45 steel , motor shaft fairly thick, stress concentration is better, so do not usually break the inertia motor shaft vibration conveyor. Motor shaft and reducer speed shaft misalignment causes the input shaft when increased radial load , increase the bending axis , long-term operation will occur off -axis phenomenon . In the installation and maintenance of its location should be carefully adjusted to ensure that two concentric shafts .
Third, the dual motor drive in case of off-axis
Belt conveyor drive past without using fluid couplings are more prone to this type of situation , because the two motors run at startup and speed synchronization and the force balance is difficult to guarantee . Dual motor drive is on the same drive gear equipped with two rollers and two motors. Now, most have adopted a fluid coupling less off -axis phenomenon occurs, but should pay attention to the amount of fuel coupling can not be too much , so it has a torque limiting coupling effects and improve the life of the vibrating conveyor . High-speed shaft of the gear unit design or selection of smaller margin more likely to occur when the phenomenon of broken shaft .
2013年11月1日星期五
Mills describes the mechanical structure
Flour Mill from the power , feed , milling and separation of four system components ; wherein the power system including motor , pulleys , belt, composed of spindle and spindle pulleys ; feed system consists of hopper , limited edition plate and the feed tube ; grind by the grinding mill system composed of body and legs ; separation system consists of a brush mounted on the spindle with the spherical snare Rhodes, and compression screw and mounted on the bottom of the mill body Lo rack components. Grinding machine is available in fixed cone mill grinding grinding grinding flour and dynamic alveolar end mill ends , the increased thickness and grinding teeth around the same height as the plug. Thus, in the grinding teeth are not fully broken particles can pass from the plug from the plug through the powder has been further polished , thereby improving the ratio of wheat flour , flour quality and the efficiency of grinding , and grinding teeth easily damaged .
Grinding machine comprises a frame and mounted on the base of the power shaft and connected to the power shaft , and with a feed port of the mill with grinding cone, the technical scheme is : the power shaft along the axial direction of the mill is provided with cone grinding gap adjustment mechanism . Food to be processed according to the particle size ( such as corn, wheat, etc. ) and processed food to adjust the thickness of the different requirements , to meet different user requirements. Centrifugal unloader housing upper side has a feeding tube , centrifugal unloader housing located above the wind pipe, centrifugal unloader housing side with trash mouth, the mouth has a mesh trash , the outer screen has a lid , provided below the discharge port switching valve miscellaneous impurities discharge pipe connected to , the ability to fall together with the dust particles of food debris completely removed , the manufacturing cost is low, with low energy consumption .
Grinding machine comprises a frame and mounted on the base of the power shaft and connected to the power shaft , and with a feed port of the mill with grinding cone, the technical scheme is : the power shaft along the axial direction of the mill is provided with cone grinding gap adjustment mechanism . Food to be processed according to the particle size ( such as corn, wheat, etc. ) and processed food to adjust the thickness of the different requirements , to meet different user requirements. Centrifugal unloader housing upper side has a feeding tube , centrifugal unloader housing located above the wind pipe, centrifugal unloader housing side with trash mouth, the mouth has a mesh trash , the outer screen has a lid , provided below the discharge port switching valve miscellaneous impurities discharge pipe connected to , the ability to fall together with the dust particles of food debris completely removed , the manufacturing cost is low, with low energy consumption .
Flour Mill downtime can always clear material and anti- jam function
Flour Mill downtime can always clear material and anti- jam function , to ensure the normal operation of equipment and non-stop performance automatic cleaning and crushing a variety of different materials. Mixing, into a powder demonstrated a slag, grinding cycle , to ensure uniformity of the content of the various components . Feed size limitation , without crushing directly into the machine , and can adapt to a variety of different water content of materials , with no drying equipment .
Buy Flour Mill needs to note: non- grinding machine body casting material , the use of all steel welded , unless there are special cutting function, the machine has a classifying device synchronization , crushed material by the airflow , the classification device the collection, classification device crushing equipment is usually replaced by a mesh that can simultaneously pulverizing and separating two powder processing operations , it demonstrated once into a powder residue , the yield of 100%.
Mills can always adjust the product fineness , fineness uniform, without increasing the sifter filtering. All wearing parts grinding machine adopts special wear-resistant materials or carbide manufacturing , wear resistance, low cost replacement of wearing parts , meet health standards for various products .
Buy Flour Mill needs to note: non- grinding machine body casting material , the use of all steel welded , unless there are special cutting function, the machine has a classifying device synchronization , crushed material by the airflow , the classification device the collection, classification device crushing equipment is usually replaced by a mesh that can simultaneously pulverizing and separating two powder processing operations , it demonstrated once into a powder residue , the yield of 100%.
Mills can always adjust the product fineness , fineness uniform, without increasing the sifter filtering. All wearing parts grinding machine adopts special wear-resistant materials or carbide manufacturing , wear resistance, low cost replacement of wearing parts , meet health standards for various products .
2013年10月28日星期一
Accident Analysis and Prevention Belt
Underground mine belt conveyor is mainly fire-prone areas, because of its sudden, rapid development, pose a threat to the underground workers, and even induced due to the spread of fire and gas explosion is possible. Result in a fire accident was caused by the ignition source has enough calories to make tape burn. Skidding accidents are a major factor in generating enough heat, tape slippage is due to loose or tape jam large load caused by the tape tensioning device due to loose tension force generated by the elastic elongation of the tape is too small and too large; large load First, because of heavy start, the second is due to load is too large, three is the tape and active roller, driven roller idler friction between too small, such as tape inside surface water or oil, the driven roller bearing damage or childcare roll damage; tape jammed tape is mainly buried in coal or in the mud, so that the tape can not run. Another electrical equipment sparks, electrical short circuit may also cause the conveyor fire.
1.2 belt run cause of the accident
Runtime Belt Conveyor deviation is the most common faults. Deviation accidents occur frequently, it will affect the life of the conveyor, severe outage occurs or is likely to result in personal injury or death. Causing belt run three main reasons: First, the device itself aspects, such as the outer cylindrical drum larger error, roller rotation is not flexible, proactive and driven roller drum axis parallelism error is larger, etc.; Second, installation and commissioning aspects, such as roller, roller, rack installation does not meet regulatory requirements, in addition to vent coal biased position of the mouth, causing the tape to make partial load deviation; Third, maintenance, mainly due to the cleaning is not timely, transport Machine Drum Machine roller-stained dust, resulting in local diameter Ambassador belt run.
1.3 Tear cause of the accident
Tear tape main reasons: First funnel badly worn, resulting in waste rock and coal gangue direct hit tape or card tape and other items caused by tearing; Second, serious deviation is scraped tear tape; three tape joint strength is too low or because the load is too large to make tape joints broken.
Prevention
2.1 Fire accident prevention
1) using fire-retardant tape, even in the event of fire, it will not be able to control the fire rapidly.
2) strengthen the maintenance of electrical equipment, to prevent fires caused by electrical accidents.
3) strengthen management, to keep the roadway clean, tape no floating coal, water, no oil, no debris, nose, tail no heap coals. Improve the quality of operation and maintenance personnel to maintain good running condition conveyor.
4) conveying confidential installation inspection and monitoring devices, such as drive rollers and driven roller temperature monitoring devices, smoke alarms and fire in the event of an automatic sprinkler system.
2.2 Deviation accident prevention
1) confirmation by the state purchase of qualified products, avoid the lack of precision equipment manufacturing belt deviation caused by an accident.
2) Install the installation process to focus on the dimensional accuracy:
a. installation tape found at the deviation in the drum, the drum should be corrected and equal degree of levelness, drive pulley, steering cylinder installation requires its width tape centerline coincides with the centerline of not more than 2mm, its axis line and tape The vertical center line of the drum is no more than a fraction of the width, the horizontal roller shaft of not more than 0.3/1000.
b. If you find that tape to the side of the no-load total deviation should be adjusted idler bracket.
c. If you find no deviation tape at no load, and heavy load to the side of the deviation, indicating that the tape appeared partial load, coal hopper vent should be adjusted to the position.
3) strengthening routine maintenance:
a. timely removal conveyor rollers, roller, splice at other major parts of the dust, and prevent the roller, roller-stained dust lead belt run.
b. timely adjustment of tape running deviation phenomenon occurs, promptly check the tape edges and joints wear, identify problems and timely replacement and repair.
4) Install belt run the monitoring device, once the belt run off the alarm signal to alert maintenance personnel to take action.
2.3 Tear accident prevention
A) timely repair worn funnel, avoiding direct coal gangue and pound the tape.
2) the timely processing of deviation fault, not tear tape.
3) Set the tape longitudinal tear monitoring devices, found fault timely manner.
1.2 belt run cause of the accident
Runtime Belt Conveyor deviation is the most common faults. Deviation accidents occur frequently, it will affect the life of the conveyor, severe outage occurs or is likely to result in personal injury or death. Causing belt run three main reasons: First, the device itself aspects, such as the outer cylindrical drum larger error, roller rotation is not flexible, proactive and driven roller drum axis parallelism error is larger, etc.; Second, installation and commissioning aspects, such as roller, roller, rack installation does not meet regulatory requirements, in addition to vent coal biased position of the mouth, causing the tape to make partial load deviation; Third, maintenance, mainly due to the cleaning is not timely, transport Machine Drum Machine roller-stained dust, resulting in local diameter Ambassador belt run.
1.3 Tear cause of the accident
Tear tape main reasons: First funnel badly worn, resulting in waste rock and coal gangue direct hit tape or card tape and other items caused by tearing; Second, serious deviation is scraped tear tape; three tape joint strength is too low or because the load is too large to make tape joints broken.
Prevention
2.1 Fire accident prevention
1) using fire-retardant tape, even in the event of fire, it will not be able to control the fire rapidly.
2) strengthen the maintenance of electrical equipment, to prevent fires caused by electrical accidents.
3) strengthen management, to keep the roadway clean, tape no floating coal, water, no oil, no debris, nose, tail no heap coals. Improve the quality of operation and maintenance personnel to maintain good running condition conveyor.
4) conveying confidential installation inspection and monitoring devices, such as drive rollers and driven roller temperature monitoring devices, smoke alarms and fire in the event of an automatic sprinkler system.
2.2 Deviation accident prevention
1) confirmation by the state purchase of qualified products, avoid the lack of precision equipment manufacturing belt deviation caused by an accident.
2) Install the installation process to focus on the dimensional accuracy:
a. installation tape found at the deviation in the drum, the drum should be corrected and equal degree of levelness, drive pulley, steering cylinder installation requires its width tape centerline coincides with the centerline of not more than 2mm, its axis line and tape The vertical center line of the drum is no more than a fraction of the width, the horizontal roller shaft of not more than 0.3/1000.
b. If you find that tape to the side of the no-load total deviation should be adjusted idler bracket.
c. If you find no deviation tape at no load, and heavy load to the side of the deviation, indicating that the tape appeared partial load, coal hopper vent should be adjusted to the position.
3) strengthening routine maintenance:
a. timely removal conveyor rollers, roller, splice at other major parts of the dust, and prevent the roller, roller-stained dust lead belt run.
b. timely adjustment of tape running deviation phenomenon occurs, promptly check the tape edges and joints wear, identify problems and timely replacement and repair.
4) Install belt run the monitoring device, once the belt run off the alarm signal to alert maintenance personnel to take action.
2.3 Tear accident prevention
A) timely repair worn funnel, avoiding direct coal gangue and pound the tape.
2) the timely processing of deviation fault, not tear tape.
3) Set the tape longitudinal tear monitoring devices, found fault timely manner.
Troubleshooting belt conveyor
To address such failures is important to note the dimensional accuracy of installation and daily maintenance. There are several reasons for deviation, to be based on the difference between handling different reasons.
1 Adjust the belt conveyor idlers bearing Belt Conveyor in the middle of the entire belt conveyor idlers deviation, adjust the position to adjust the deviation; idlers in the manufacture of both sides of the mounting holes are worked into holes for be adjusted. Specific adjustment method, the specific method is biased which side of the belt, idlers which side of the belt toward the forward direction forward, backward, or the other side. Figure 1 shows the direction of the belt upward deviation is lower roller group should be located at the left, the upper roller group moved to the right place.
2 Install aligning roller group aligning roller group has many types such as an intermediate shaft type, four-link, vertical roller type, etc. The principle is the use of block or roller rotates in the direction in the horizontal plane lateral thrust block or generate the Automatic belt adjustment belt deviation reaches to the heart of the purpose. Average total length of the belt conveyor or belt conveyor shorter run time using this method bidirectional more reasonable, because the shorter belt conveyors easier deviation and not easy to adjust. And long belt conveyor is best not to use this method, because self-aligning roller group life belt use would have some impact.
3 Adjust the drive pulley and the driven pulley and bend pulley position adjustment bend pulley belt deviation adjustment is an important part. Because a belt conveyor with at least two to five rollers, all the rollers must be perpendicular to the installation location of the longitudinal direction of the belt conveyor centerline, if the skew is too large deviation inevitable. Adjustment Method and its group of similar idlers. For the head drum as the drum belt deviation to the right, the right of the bearing should be moved forward, the belt deviation to the left of the drum, the left bearing housing should be moved forward, also the corresponding After moving the left or right side bearing housings after the shift. Rear roller adjustment method and the head drum opposite. Adjustment method. After repeated adjustments until the belt transferred to an ideal location. Adjust the drive or bend pulley in the best pre-install its exact location.
4 tension belt tension adjustment at the adjustment at the conveyor belt deviation adjustment a very important part. Hammer at the upper two tensioning idler pulley in addition to other than perpendicular to the longitudinal direction of the belt should be perpendicular to the vertical line of gravity, which is to ensure its axis horizontal centerline. Tensioning screw or hydraulic cylinders with tension, the tension of the two roller bearing shall simultaneously pan, to ensure the longitudinal direction of the drum axis and perpendicular to the belt. Specific method of adjusting the belt deviation adjustment of the drum at similar.
5 reprinted point blanking position on the belt deviation of reproduced material blanking at the point position on the belt deviation has a very big impact, especially in the two belt conveyor in the horizontal plane perpendicular to the projection of a greater impact. Usually reproduced points should be considered down two belt conveyor relative height. The relative height of the lower horizontal velocity component of the material the greater the impact on the lower side of the belt is greater, while the material is difficult to center. The cross section of the material on the belt deflection, resulting belt deviation. If the material is biased to the right, then the belt deviation to the left, and vice versa. In the design process should be possible to increase the relative height of two belt conveyor. In space-constrained mobile bulk material handling machinery down funnel, guide trough and other pieces of form and size should be seriously considered. General guidance for the width of the trough belt width should be about two-thirds more appropriate. In order to reduce or avoid the belt deviation increase blocking plate blocking materials, changing direction and position of the whereabouts of the material.
6-way running conveyor belt deviation adjustment bidirectional running belt conveyor belt deviation adjustment than the one-way conveyor belt deviation relative to the adjustment much more difficult, specific adjustments should be adjusted in a certain direction, and then adjust another direction. Adjust the belt to carefully observe the movement direction of the relationship with the deviation trend, individually adjusted. Emphasis should be placed on the drive pulley and bend pulley adjustments, followed by the adjustment of the roller and the material blanking point adjustment. Also note that the belt when the belt curing joint cross the longitudinal direction of the force evenly in the use of both sides of the chain traction force equal as possible.
1 Adjust the belt conveyor idlers bearing Belt Conveyor in the middle of the entire belt conveyor idlers deviation, adjust the position to adjust the deviation; idlers in the manufacture of both sides of the mounting holes are worked into holes for be adjusted. Specific adjustment method, the specific method is biased which side of the belt, idlers which side of the belt toward the forward direction forward, backward, or the other side. Figure 1 shows the direction of the belt upward deviation is lower roller group should be located at the left, the upper roller group moved to the right place.
2 Install aligning roller group aligning roller group has many types such as an intermediate shaft type, four-link, vertical roller type, etc. The principle is the use of block or roller rotates in the direction in the horizontal plane lateral thrust block or generate the Automatic belt adjustment belt deviation reaches to the heart of the purpose. Average total length of the belt conveyor or belt conveyor shorter run time using this method bidirectional more reasonable, because the shorter belt conveyors easier deviation and not easy to adjust. And long belt conveyor is best not to use this method, because self-aligning roller group life belt use would have some impact.
3 Adjust the drive pulley and the driven pulley and bend pulley position adjustment bend pulley belt deviation adjustment is an important part. Because a belt conveyor with at least two to five rollers, all the rollers must be perpendicular to the installation location of the longitudinal direction of the belt conveyor centerline, if the skew is too large deviation inevitable. Adjustment Method and its group of similar idlers. For the head drum as the drum belt deviation to the right, the right of the bearing should be moved forward, the belt deviation to the left of the drum, the left bearing housing should be moved forward, also the corresponding After moving the left or right side bearing housings after the shift. Rear roller adjustment method and the head drum opposite. Adjustment method. After repeated adjustments until the belt transferred to an ideal location. Adjust the drive or bend pulley in the best pre-install its exact location.
4 tension belt tension adjustment at the adjustment at the conveyor belt deviation adjustment a very important part. Hammer at the upper two tensioning idler pulley in addition to other than perpendicular to the longitudinal direction of the belt should be perpendicular to the vertical line of gravity, which is to ensure its axis horizontal centerline. Tensioning screw or hydraulic cylinders with tension, the tension of the two roller bearing shall simultaneously pan, to ensure the longitudinal direction of the drum axis and perpendicular to the belt. Specific method of adjusting the belt deviation adjustment of the drum at similar.
5 reprinted point blanking position on the belt deviation of reproduced material blanking at the point position on the belt deviation has a very big impact, especially in the two belt conveyor in the horizontal plane perpendicular to the projection of a greater impact. Usually reproduced points should be considered down two belt conveyor relative height. The relative height of the lower horizontal velocity component of the material the greater the impact on the lower side of the belt is greater, while the material is difficult to center. The cross section of the material on the belt deflection, resulting belt deviation. If the material is biased to the right, then the belt deviation to the left, and vice versa. In the design process should be possible to increase the relative height of two belt conveyor. In space-constrained mobile bulk material handling machinery down funnel, guide trough and other pieces of form and size should be seriously considered. General guidance for the width of the trough belt width should be about two-thirds more appropriate. In order to reduce or avoid the belt deviation increase blocking plate blocking materials, changing direction and position of the whereabouts of the material.
6-way running conveyor belt deviation adjustment bidirectional running belt conveyor belt deviation adjustment than the one-way conveyor belt deviation relative to the adjustment much more difficult, specific adjustments should be adjusted in a certain direction, and then adjust another direction. Adjust the belt to carefully observe the movement direction of the relationship with the deviation trend, individually adjusted. Emphasis should be placed on the drive pulley and bend pulley adjustments, followed by the adjustment of the roller and the material blanking point adjustment. Also note that the belt when the belt curing joint cross the longitudinal direction of the force evenly in the use of both sides of the chain traction force equal as possible.
2013年10月25日星期五
The working principle and structure of belt conveyor
Belt Conveyor is used as traction mechanism and bearing a continuous transport machinery sector, which is the main transportation equipment of bulk materials, with continuous operation, transport capacity, running resistance, low power consumption, smooth operation, transport en route to the materials in the crushing of small, easy to realize automatic control, etc., are widely used in coal, metallurgy, port transportation, building materials and other departments. With the development of national economy and scientific and technological progress, belt conveyor applications will become increasingly widespread.
Conveyor works as follows: The head belt around the drive pulley and tail redirecting roller Jane endless belt to form a non-polar, while the upper and lower belts were supported on the upper and lower rollers, the tensioning device In normal operation to the desired belt tension. When the drive unit driven by the drive roller rotates with the drive roller and the friction between the belt and the conveyor belt running along the above goods, goods are carried on a conveyor belt to the nose, due to steering belt is achieved Uninstall.
The fuselage cross-section belt. Cargo transported on conveyor belts, conveyor belts called this part of the working section or heavy segment; under the conveyor belt transporting goods is not known as an empty segment.
Can be used for horizontal and inclined belt conveyor transport. Typically, the transportation of coal along the inclined, the angle is not greater than 180, is not greater than 150 downward transport, transporting drilling significant adhesion and large materials, inclination can be appropriately increased.
Belt disadvantages are: conveyor higher cost and easy damage, should not be hard, angular materials transportation; compared with other devices, higher initial investment, but can not be used too much inclination occasion.
Many types of belt conveyors, scope and characteristics of each are not identical. The main types are: common type conveyor, belt conveyor frame hanging rope, retractable belt conveyors, powerful conveyor, wire rope conveyor, belt conveyor intermediate multi-stage driver and large cushion belt conveyor and so on.
With the rapid development of China's coal industry, mine traffic increasing, in a large pit on the main level and sloping roadway, using a large volume, long-distance belt conveyor is extremely beneficial, steel cord conveyor belt is to adapt kinds of needs and design a powerful belt conveyor. It is the common type of belt conveyor difference is that it uses steel cord conveyor belt instead of the ordinary, its tensile strength than the ordinary type increased IL times, even in recent times, greatly improved conveyor transmission capacity.
Conveyor works as follows: The head belt around the drive pulley and tail redirecting roller Jane endless belt to form a non-polar, while the upper and lower belts were supported on the upper and lower rollers, the tensioning device In normal operation to the desired belt tension. When the drive unit driven by the drive roller rotates with the drive roller and the friction between the belt and the conveyor belt running along the above goods, goods are carried on a conveyor belt to the nose, due to steering belt is achieved Uninstall.
The fuselage cross-section belt. Cargo transported on conveyor belts, conveyor belts called this part of the working section or heavy segment; under the conveyor belt transporting goods is not known as an empty segment.
Can be used for horizontal and inclined belt conveyor transport. Typically, the transportation of coal along the inclined, the angle is not greater than 180, is not greater than 150 downward transport, transporting drilling significant adhesion and large materials, inclination can be appropriately increased.
Belt disadvantages are: conveyor higher cost and easy damage, should not be hard, angular materials transportation; compared with other devices, higher initial investment, but can not be used too much inclination occasion.
Many types of belt conveyors, scope and characteristics of each are not identical. The main types are: common type conveyor, belt conveyor frame hanging rope, retractable belt conveyors, powerful conveyor, wire rope conveyor, belt conveyor intermediate multi-stage driver and large cushion belt conveyor and so on.
With the rapid development of China's coal industry, mine traffic increasing, in a large pit on the main level and sloping roadway, using a large volume, long-distance belt conveyor is extremely beneficial, steel cord conveyor belt is to adapt kinds of needs and design a powerful belt conveyor. It is the common type of belt conveyor difference is that it uses steel cord conveyor belt instead of the ordinary, its tensile strength than the ordinary type increased IL times, even in recent times, greatly improved conveyor transmission capacity.
Dynamic analysis of belt conveyor main problem to be solved
Belt Conveyor dynamic analysis of the most important feature is the change in the previous study each component individually designed patterns to various components of the conveyor the best way to work together for the ultimate goal, the conveyor as an organic whole to conduct a comprehensive analysis, find the optimal combination of model and control strategy in the economic, reliable conditions, to improve the overall performance of the conveyor.
Dynamic analysis in modern belt conveyor design to solve the main problem between the following aspects:
(1) Calculate the transport conveyor driven in operation of the peak value and the tension condition occurs. Conveyor drive tension peak is generally several times its normal operating tension or even ten times, and according to the way the previous static design tension value calculated is much smaller than the actual value, we can only increase the safety factor to ensure delivery safe operation of the machine. In the absence of reliable analytical tool in the case, the use of empirical methods to determine the factor of safety is often made too large, it will inevitably result in increased costs, waste of investment.
(2) analysis of the vibration conveyor belt running it special law. Vibration is causing tension increase was mainly driven conveyor, belt accident is caused by the culprit, find out the rules for the effective control of its dynamic tension the belt of great significance.
(3) study the boundary conditions on the conveyor belt vibration regulation impact. Boundary conditions conveyor belt means all affect the dynamic characteristics of internal conditions and external conditions, such as driving, tensioning devices, roller, load and so on. To analyze the changes of these boundary conditions on the vibration impact and vibration conveyor find optimal hop's best special form of the boundary conditions.
(4) the boundary conditions optimized working conveyor through dynamic analysis to determine the best configuration for transport subsystem.
(5) based on comprehensive analysis of the results of the evaluation, selection and reasonable belt conveyor structure and configuration, so that in performance and comprehensive economic indicators optimal.
Dynamic analysis in modern belt conveyor design to solve the main problem between the following aspects:
(1) Calculate the transport conveyor driven in operation of the peak value and the tension condition occurs. Conveyor drive tension peak is generally several times its normal operating tension or even ten times, and according to the way the previous static design tension value calculated is much smaller than the actual value, we can only increase the safety factor to ensure delivery safe operation of the machine. In the absence of reliable analytical tool in the case, the use of empirical methods to determine the factor of safety is often made too large, it will inevitably result in increased costs, waste of investment.
(2) analysis of the vibration conveyor belt running it special law. Vibration is causing tension increase was mainly driven conveyor, belt accident is caused by the culprit, find out the rules for the effective control of its dynamic tension the belt of great significance.
(3) study the boundary conditions on the conveyor belt vibration regulation impact. Boundary conditions conveyor belt means all affect the dynamic characteristics of internal conditions and external conditions, such as driving, tensioning devices, roller, load and so on. To analyze the changes of these boundary conditions on the vibration impact and vibration conveyor find optimal hop's best special form of the boundary conditions.
(4) the boundary conditions optimized working conveyor through dynamic analysis to determine the best configuration for transport subsystem.
(5) based on comprehensive analysis of the results of the evaluation, selection and reasonable belt conveyor structure and configuration, so that in performance and comprehensive economic indicators optimal.
2013年10月23日星期三
Small flour mechanical friction exists deputy campaign
Small Flour Mill mechanical friction exists deputy campaign . Small flour machinery in motion frost deputy campaign to overcome the friction part of the energy is consumed , which is part of the energy is converted to heat to the temperature rise deputy campaign Gao , leading lubricant failure , changes in material properties , so that the flour machine working conditions deteriorate, while the friction causes wear and damage to the surface of the component motion pair geometry and surface quality of children , that the deputy campaign is not working properly and failure. From this point of friction is a harmful factor. Flour machine design in order to reduce friction and it has been hard .
In normal daily life and certain aspects of T process , the friction also play a useful role is indispensable . For example , flour machine fastening , connection , belt drive , compact flour machinery brake , the car traveling on the road and rolling of steel is the use of friction , etc. The typical example of indium . In these cases, people and efforts to increase the friction in order to ensure produce reliable , sufficiently large friction.
In normal daily life and certain aspects of T process , the friction also play a useful role is indispensable . For example , flour machine fastening , connection , belt drive , compact flour machinery brake , the car traveling on the road and rolling of steel is the use of friction , etc. The typical example of indium . In these cases, people and efforts to increase the friction in order to ensure produce reliable , sufficiently large friction.
Small flour machinery in use for troubleshooting common faults have the following
1, the motor temperature fault is one of the main motor damage . Reasons caused by high temperature bearings in oil , the bearing into the dirt , bearing damage , motor overload .
2 , cleaning sieve failure
( 1 ) cleaning sieve screen frame vibration or shaking . Due to loose bolts or wedge .
( 2 ) wheat were broken too . Due to the wheat board and the sieve device tooth gap is too small , too large sieve or damaged.
( 3 ) with a grain of sand and gravel . The reason is a small row of stone damper inside the mouth , or Screen angle inappropriate.
3 , spiral agitator failure
( A ) a non-exclusive food grain port . Motor rotates in the wrong reasons , the discharge port congestion, agitator blade breakage .
( 2 ) agitator shaft does not turn, causes feeding excessive belt slippage .
4 , Flour Machinery malfunction
( A ) not less powder or flour . Common cause of clogged sieve .
( 2 ) Fault Closed Closed Wind Wind poor side bags may be sucked on . Common causes of air leakage at the connections , impeller wear.
( 3 ) flour and high temperature. Should loosen the roller , such as roller should be repaired or replaced badly worn ; machines shut down when the high temperature heat .
( 4 ) body shaking. Tighten bolts with the rack grinding .
( 5 ) yields. Tighten the spring , ensuring consistent roller gap at both ends of the worn grinding teeth to be repaired.
( 6 ) no bran. Common causes spindle turning wrong, or mesh sieve frame Mifengbuyan damaged .
2 , cleaning sieve failure
( 1 ) cleaning sieve screen frame vibration or shaking . Due to loose bolts or wedge .
( 2 ) wheat were broken too . Due to the wheat board and the sieve device tooth gap is too small , too large sieve or damaged.
( 3 ) with a grain of sand and gravel . The reason is a small row of stone damper inside the mouth , or Screen angle inappropriate.
3 , spiral agitator failure
( A ) a non-exclusive food grain port . Motor rotates in the wrong reasons , the discharge port congestion, agitator blade breakage .
( 2 ) agitator shaft does not turn, causes feeding excessive belt slippage .
4 , Flour Machinery malfunction
( A ) not less powder or flour . Common cause of clogged sieve .
( 2 ) Fault Closed Closed Wind Wind poor side bags may be sucked on . Common causes of air leakage at the connections , impeller wear.
( 3 ) flour and high temperature. Should loosen the roller , such as roller should be repaired or replaced badly worn ; machines shut down when the high temperature heat .
( 4 ) body shaking. Tighten bolts with the rack grinding .
( 5 ) yields. Tighten the spring , ensuring consistent roller gap at both ends of the worn grinding teeth to be repaired.
( 6 ) no bran. Common causes spindle turning wrong, or mesh sieve frame Mifengbuyan damaged .
2013年10月22日星期二
Food processing machinery troubleshooting measures
Flour Mill Equipment in the use of the Central Standing Committee some small problems do not occur in mechanical equipment damage or failure , but improper use or maintenance is not in place due to these problems are easy to solve.
If less flour machine flour or no flour , the main screen is blocked , flour can not be screened out . After the shutdown of the screen removed to clean up on it.
Flour machine to work properly, but the flour yield than previously declined. This situation is mainly due to grinding teeth wear too big a gap between the roller causes. The solution is : compression spring , to ensure both sides of the roller gap , like or re- drawing .
If the temperature is too high, the output of flour , a machine running time is too long , the heat caused by too much , another reason is the gap between the small roller caused .
Flour Machinery just out of flour, bran does not come out , this is the mesh screen frame Mifengbuyan damaged or caused , for a screen on the line.
If you shake flour machine , you should check for loose screws , and if loose , tighten the screws on it.
If less flour machine flour or no flour , the main screen is blocked , flour can not be screened out . After the shutdown of the screen removed to clean up on it.
Flour machine to work properly, but the flour yield than previously declined. This situation is mainly due to grinding teeth wear too big a gap between the roller causes. The solution is : compression spring , to ensure both sides of the roller gap , like or re- drawing .
If the temperature is too high, the output of flour , a machine running time is too long , the heat caused by too much , another reason is the gap between the small roller caused .
Flour Machinery just out of flour, bran does not come out , this is the mesh screen frame Mifengbuyan damaged or caused , for a screen on the line.
If you shake flour machine , you should check for loose screws , and if loose , tighten the screws on it.
2013年10月16日星期三
Bucket elevator Fault Analysis and Treatment Methods
1, the operation occurs when abnormal sound
(1) Bucket Elevator bucket chain base floor and collide, adjusting the base of the elastic device, so that the chain tensioner.
(2) drive shaft, a driven shaft key relaxation, sprockets displacement, bucket and chassis collide. Adjust sprocket position, the key fitted tight.
(3) guide plates collide with bucket chain, trimming guide plate position.
(4) with bucket chain guide plate sandwiched between materials, materials amplifier inputs seat angle.
(5) bearing failure can not be flexible operation, replace the bearings.
(6) blocks or other foreign material on the machine base shell stuck, stop foreign body removal.
(7) sprocket (drive and driven sprockets) of the tooth is not correct, amend or replace the sprocket tooth sprocket.
(8) drive sprocket and chain off the bad teeth, fix sprocket tooth.
(9) drive chain generates idling adjust the chain length.
(10) chassis is not properly installed, align the vertical length of the chassis.
2, the vibration motor base
(1) Rotate the motor itself is bad, remove the rotor inspection static balance.
(2) Reducer and motor mounting accuracy is poor, in excess of the specification, readjust.
(3) lack of precision motor base mounted, horizontal exceeds regulatory requirements, re-adjust.
(4) there is an error installing the drive sprocket, need to re-adjust.
(5) drive sprocket tooth bad, need to be corrected tooth.
(6) drive sprocket tightness inappropriate and should be adjusted.
3, the leakage gray
(A) full-length chassis flange gasket damaged or missing pads, replaced with new pads, coated sealant, re-tighten the flange bolts.
(2) material from the nose, the gap at the base of the escape, increasing gaskets or sealant coating.
(3) The height of input materials is too large, increasing the feed pressure, the need to change the material into ways to increase the feed buffer device.
4, to enhance the capacity of less than design capacity
(1) material bonded to the chain bucket and downpipe, according to the degree of adhesion, periodically clear materials.
(2) bucket elevator machinery front of insufficient capacity, causing less material inputs that elevator to reach the design capacity, the need to try to increase production capacity before the machine equipment,
(3) enhance the speed is slow, need to change the speed ratio of the transmission chain.
(4) improper material measurement method, or measurement error, check the meter, check the proportion of materials, revised the calculation methods.
5, the material discharged insufficient
(A) to enhance the ability of small rear of Seed coating machine and equipment, so that the discharge valve is blocked, the rear of machinery and equipment to improve production capacity.
(2) discharge opening angle downpipe downpipe is too small or not suitable correction nesting downpipe.
(3) material adhered to the bucket and downpipe, the need to regularly clear the materials.
(1) Bucket Elevator bucket chain base floor and collide, adjusting the base of the elastic device, so that the chain tensioner.
(2) drive shaft, a driven shaft key relaxation, sprockets displacement, bucket and chassis collide. Adjust sprocket position, the key fitted tight.
(3) guide plates collide with bucket chain, trimming guide plate position.
(4) with bucket chain guide plate sandwiched between materials, materials amplifier inputs seat angle.
(5) bearing failure can not be flexible operation, replace the bearings.
(6) blocks or other foreign material on the machine base shell stuck, stop foreign body removal.
(7) sprocket (drive and driven sprockets) of the tooth is not correct, amend or replace the sprocket tooth sprocket.
(8) drive sprocket and chain off the bad teeth, fix sprocket tooth.
(9) drive chain generates idling adjust the chain length.
(10) chassis is not properly installed, align the vertical length of the chassis.
2, the vibration motor base
(1) Rotate the motor itself is bad, remove the rotor inspection static balance.
(2) Reducer and motor mounting accuracy is poor, in excess of the specification, readjust.
(3) lack of precision motor base mounted, horizontal exceeds regulatory requirements, re-adjust.
(4) there is an error installing the drive sprocket, need to re-adjust.
(5) drive sprocket tooth bad, need to be corrected tooth.
(6) drive sprocket tightness inappropriate and should be adjusted.
3, the leakage gray
(A) full-length chassis flange gasket damaged or missing pads, replaced with new pads, coated sealant, re-tighten the flange bolts.
(2) material from the nose, the gap at the base of the escape, increasing gaskets or sealant coating.
(3) The height of input materials is too large, increasing the feed pressure, the need to change the material into ways to increase the feed buffer device.
4, to enhance the capacity of less than design capacity
(1) material bonded to the chain bucket and downpipe, according to the degree of adhesion, periodically clear materials.
(2) bucket elevator machinery front of insufficient capacity, causing less material inputs that elevator to reach the design capacity, the need to try to increase production capacity before the machine equipment,
(3) enhance the speed is slow, need to change the speed ratio of the transmission chain.
(4) improper material measurement method, or measurement error, check the meter, check the proportion of materials, revised the calculation methods.
5, the material discharged insufficient
(A) to enhance the ability of small rear of Seed coating machine and equipment, so that the discharge valve is blocked, the rear of machinery and equipment to improve production capacity.
(2) discharge opening angle downpipe downpipe is too small or not suitable correction nesting downpipe.
(3) material adhered to the bucket and downpipe, the need to regularly clear the materials.
Bucket elevator works
Bucket Elevator for conveying powder, granular and small block of non-abrasive and small abrasive materials. TH is a type of ring chain bucket elevator use of hybrid or gravity discharge, digging loader. Tractor parts with high quality steel ring chain. Central case of single-, dual-channel two forms of machine hammer box Constant automatic tensioning. Sprocket rims interchangeable modular structure. Long life and easy replacement rim. The lower the gravity automatic tensioning device, to maintain a constant tension, to prevent slippage or from chain, while the hopper stuck encountered phenomenon caused by accidental factors have a certain tolerance so that resistance, can effectively protect the lower shaft member. The bucket elevator for conveying bulk density of less than 1.5t/m3 easy to dig a powder, granular, small block bottom abrasive materials. Such as coal, cement, gravel, sand, fertilizer, food and so on. TH-type bucket elevator for a variety of vertical transport of bulk materials. Suitable for conveying powder, granular, small block materials, classic statement material temperature below 250 ℃.
Bucket elevator conveyor working principle is: the material from the hopper to scoop up the following storage medium, with conveyor belts or chains upgraded to the top, flip down after bypassing the top wheel, bucket elevator material is poured into the receiving groove inside. Belt bucket elevator drive transmission belt generally use rubber band attached to the lower or above the upper and lower drive roller and the idler pulley. Chain bucket elevator drive with two generally parallel transmission chain, or following a pair of drive sprocket, under or on top of a pair of headed sprocket. Bucket elevators are generally equipped with chassis, in order to prevent the bucket elevator in dust.
Bucket elevator conveyor working principle is: the material from the hopper to scoop up the following storage medium, with conveyor belts or chains upgraded to the top, flip down after bypassing the top wheel, bucket elevator material is poured into the receiving groove inside. Belt bucket elevator drive transmission belt generally use rubber band attached to the lower or above the upper and lower drive roller and the idler pulley. Chain bucket elevator drive with two generally parallel transmission chain, or following a pair of drive sprocket, under or on top of a pair of headed sprocket. Bucket elevators are generally equipped with chassis, in order to prevent the bucket elevator in dust.
2013年10月9日星期三
Use and maintenance of the screw conveyor points to note are those
Screw
conveyor is used for conveying powder , granular, small block materials, general-purpose transportation equipment, all kinds of bearings are in the dust in the work , so the working conditions so reasonable operation and maintenance of the screw conveyor to a more great significance , screw conveyor operation and maintenance of the main requirements are as follows :
1 , please use the screw conveyor , on normal operating procedures to operate, and often observe the screw conveyor is abnormal condition exists. If there is an abnormality please shut down for inspection, troubleshooting before operation.
2, please pay attention to safety , do not place your hands or other objects into the rotating parts .
3 , during use , screw conveyor is strictly prohibited heavy start , start feeding should be preceded by the host , and then feeding ; should be checked before the start of the cylinder body I is too much material .
4, in order to ensure no load starting screw Fluting machine requirements , conveyor feeding should be stopped before stopping , and other material inside the chassis rear was completely lost all stopped .
5 , in strict accordance with the mixer loading capacity : no more than the effective volume of the mixer used under strict overload use , it would burn or damage the gear motor and other components . After adding the material must remember not to stop halfway , try to avoid overloading the next start-up.
6 , the initial feed screw conveyor , the feed rate should be increased gradually until it reaches the conveying capacity , feeding should be uniform, or likely to cause transport of materials product plugs, drive overload .
7 , the material being transported shall not be mixed with chunks of hard materials to avoid causing death card spiral screw machine damage.
8 , the normal operation of 1800 hours conveyor should be a small repair , mainly to check lubrication or replacement of wearing parts ;
9 , the normal operation of 4000 hours should be overhauled , mainly for all assemblies demolition inspection and cleaning, replacement or correction of all wearing parts and standard parts .
When removing the screw conveyor please remember the clear sequence , while the reverse order when assembled can be combined . The local host helix and direction of rotation of the feed screw should follow the direction signs, strict reverse direction !
1 , please use the screw conveyor , on normal operating procedures to operate, and often observe the screw conveyor is abnormal condition exists. If there is an abnormality please shut down for inspection, troubleshooting before operation.
2, please pay attention to safety , do not place your hands or other objects into the rotating parts .
3 , during use , screw conveyor is strictly prohibited heavy start , start feeding should be preceded by the host , and then feeding ; should be checked before the start of the cylinder body I is too much material .
4, in order to ensure no load starting screw Fluting machine requirements , conveyor feeding should be stopped before stopping , and other material inside the chassis rear was completely lost all stopped .
5 , in strict accordance with the mixer loading capacity : no more than the effective volume of the mixer used under strict overload use , it would burn or damage the gear motor and other components . After adding the material must remember not to stop halfway , try to avoid overloading the next start-up.
6 , the initial feed screw conveyor , the feed rate should be increased gradually until it reaches the conveying capacity , feeding should be uniform, or likely to cause transport of materials product plugs, drive overload .
7 , the material being transported shall not be mixed with chunks of hard materials to avoid causing death card spiral screw machine damage.
8 , the normal operation of 1800 hours conveyor should be a small repair , mainly to check lubrication or replacement of wearing parts ;
9 , the normal operation of 4000 hours should be overhauled , mainly for all assemblies demolition inspection and cleaning, replacement or correction of all wearing parts and standard parts .
When removing the screw conveyor please remember the clear sequence , while the reverse order when assembled can be combined . The local host helix and direction of rotation of the feed screw should follow the direction signs, strict reverse direction !
Belt conveyor is probably how correct standard operating
In industrial production , often because the operation is not standardized , resulting in a number of security incidents site today tell us about the safe operation of the conveyor belt , cuts in production safety hazard.
First and foremost, before the open belt conveyors , belt conveyors to recognize in a normal situation , the various components are not damaged , circuit, gas supply voltages are in the preparatory position open belt conveyors caliber power .
After an open Belt Conveyor , it is necessary to follow strict rules by the line of operations:
1 Close the total power , look at all the hours of operation the power light conditions, see the end , admit and correct and then the following operations
(2) The second step of each loop is closed by one power switch, view the LEDs and the belt conveyor is not a unusual. Under normal circumstances are: inverter and other equipment power indicator light, the inverter panel show normal appearance ( no fault code appears ) , belt conveyor operation indicator is not lit , the device does not operate.
3 By launching the process in accordance with electrical equipment , electrical equipment launched on a normal ( motor or other equipment has reached the normal speed , normal conditions ) and then the next one to launch electrical equipment .
In the belt conveyor operation, it is necessary to abide by the items are shipped items depicted in the rules and abide by the ability to depict the belt conveyor . Secondly, we must pay attention to all categories of personnel not touch the belt conveyor movement somewhat , non-professionals are not free to touch electrical components , control buttons, etc. . Eventually, the belt conveyor operation of the inverter can not break after the class , if it decides that needs repair , it is necessary in the case of suspension frequency operation carried competence , or can damage the drive .
First and foremost, before the open belt conveyors , belt conveyors to recognize in a normal situation , the various components are not damaged , circuit, gas supply voltages are in the preparatory position open belt conveyors caliber power .
After an open Belt Conveyor , it is necessary to follow strict rules by the line of operations:
1 Close the total power , look at all the hours of operation the power light conditions, see the end , admit and correct and then the following operations
(2) The second step of each loop is closed by one power switch, view the LEDs and the belt conveyor is not a unusual. Under normal circumstances are: inverter and other equipment power indicator light, the inverter panel show normal appearance ( no fault code appears ) , belt conveyor operation indicator is not lit , the device does not operate.
3 By launching the process in accordance with electrical equipment , electrical equipment launched on a normal ( motor or other equipment has reached the normal speed , normal conditions ) and then the next one to launch electrical equipment .
In the belt conveyor operation, it is necessary to abide by the items are shipped items depicted in the rules and abide by the ability to depict the belt conveyor . Secondly, we must pay attention to all categories of personnel not touch the belt conveyor movement somewhat , non-professionals are not free to touch electrical components , control buttons, etc. . Eventually, the belt conveyor operation of the inverter can not break after the class , if it decides that needs repair , it is necessary in the case of suspension frequency operation carried competence , or can damage the drive .
2013年9月29日星期日
Belt Conveyor
Belt conveyor for conveying bulk density less than 1.67 / t / cubic meter , easy to dig a powder, granular, small block of low- abrasive materials and bags of materials such as coal , gravel , sand , cement, fertilizer , food and so on. Sent material temperature is less than 60 ℃. Its captain and assembly forms can be determined according to user requirements , transmission can be electric drum can also be used with the drive rack drives.
Belt conveyor used can be divided into : ordinary canvas core conveyor belt , high strength steel cord belt transmission machine, run under full proof belt conveyor , flame-type Bucket Elevator , two-speed dual op- belt conveyor , reversible mobile belt conveyor , belt conveyor and so cold .
Belt conveyor is widely used in mining, metallurgy, coal and other departments to transport loose materials or items, according to transport process requirements, can be a single conveyor can also be composed of multiple components or other transportation equipment horizontal or inclined transportation system to meet the different types of operating line layout needs .
Belt conveyor used can be divided into : ordinary canvas core conveyor belt , high strength steel cord belt transmission machine, run under full proof belt conveyor , flame-type Bucket Elevator , two-speed dual op- belt conveyor , reversible mobile belt conveyor , belt conveyor and so cold .
Belt conveyor is widely used in mining, metallurgy, coal and other departments to transport loose materials or items, according to transport process requirements, can be a single conveyor can also be composed of multiple components or other transportation equipment horizontal or inclined transportation system to meet the different types of operating line layout needs .
2013年9月28日星期六
Some affect the efficiency of the screw conveyor conveying the main factors
Several impact screw conveyor transport efficiency main factors:
1 material viscosity , easy caking. Viscous material , the material is easy to stick to the screw conveyor blades and the inner wall , making the material handling process resistance increases directly affect production efficiency.
2 spiral diameter . Screw diameter also affects the size of the transport efficiency . Under the same conditions , diameter larger than the diameter conveyors efficient small throughput and transmission efficiency is high .
3 inclination of the screw conveyor and transmission distance.
4 . Material size , temperature, moisture , abrasive and corrosive . Specific parameters can refer to: Screw technical parameters and throughput formula.
5 screw conveyor speed . Related to the conveying motor power size. Screw Conveyor operating speed on the characteristics of the material are closely related , high- speed conveyor assembly demanding the production of , and better balance . The following table has four kinds of speed choice, in fact, more conservative, especially in large, medium size , speed is low , resulting in greater waste. Recommended in the selection table to take a higher speed, better transportation efficiency .
Screw conveyor is a more extensive use of transportation equipment , usually used for small pieces of powder or granular materials transportation . For different materials , the choice of model is not the same . General requirements for the food industry are mostly stainless steel screw conveyor , the more stringent requirements of the material for other industries according to need. For some materials with twining , more choice of shaftless screw conveyor , this type of conveyor can effectively reduce the material wound on the spindle case , greater throughput .
1 material viscosity , easy caking. Viscous material , the material is easy to stick to the screw conveyor blades and the inner wall , making the material handling process resistance increases directly affect production efficiency.
2 spiral diameter . Screw diameter also affects the size of the transport efficiency . Under the same conditions , diameter larger than the diameter conveyors efficient small throughput and transmission efficiency is high .
3 inclination of the screw conveyor and transmission distance.
4 . Material size , temperature, moisture , abrasive and corrosive . Specific parameters can refer to: Screw technical parameters and throughput formula.
5 screw conveyor speed . Related to the conveying motor power size. Screw Conveyor operating speed on the characteristics of the material are closely related , high- speed conveyor assembly demanding the production of , and better balance . The following table has four kinds of speed choice, in fact, more conservative, especially in large, medium size , speed is low , resulting in greater waste. Recommended in the selection table to take a higher speed, better transportation efficiency .
Screw conveyor is a more extensive use of transportation equipment , usually used for small pieces of powder or granular materials transportation . For different materials , the choice of model is not the same . General requirements for the food industry are mostly stainless steel screw conveyor , the more stringent requirements of the material for other industries according to need. For some materials with twining , more choice of shaftless screw conveyor , this type of conveyor can effectively reduce the material wound on the spindle case , greater throughput .
Bucket elevator tensioning device redesign
Bucket Elevator tensioning device redesign :
Since bucket elevator has a small footprint , full sealed transmission, reduce environmental pollution, is commonly used in conveying bulk material handling equipment .
Bucket elevators work in order to stabilize the normal operation of the traction needed for tensioning member tensioning force is called the tension generated ; keep running tension is called the minimum initial tension , the tension is too early to accelerate parts wear in , initial tension is too small , traction wheel slip or towing parts and pieces of deflection , is not working properly . Tractor parts with tape, ring chain , plate chain several structures , performance is not the same, so the selection of the tensioning method is also different , the current methods commonly used tensioning screw tensioning tensioning lever hammer , hammer tensioning , composite tension and so on.
Screw mounted on the lower part of the chassis , nut U-shaped groove in the support plate , when the rotary screw , they can move the support plate , the lower bearing is fixed on the support plate, thereby enabling lower tension roller to pull pieces . This method is suitable for tensioning the tape for traction member using bucket elevators , the tape a certain degree of flexibility , when given elongation , the adjustable tensioning screw , in order to ensure stability of the work tape .
The hammer lever tensioning force acts on the support plate , fixed to a lower bearing support plate , so that the lower part of the pulling element driven sprocket taut. This is an automatic tensioning device , hammer follower lever has a certain resistance, traction member to stay in the skin with a certain tension, so that the stable operation of the drive in the chain hoist is usually applied to avoid slipping off the chain and the application effect.
Tensioning hammer , hammer gravity via the bracket directly to the lower bearing housing , the pulling of the lower driven sprocket member taut, and the hammer lever tensioning methods, to achieve the same tension , more weight . So commonly used in weight pulling pieces larger plate chain hoist in position space is small, automatic tensioning method .
Composite tension , combined with the spring hammer , pressure in the lower bearing seat, so that the lower part of the traction drive wheel parts taut, composite tension in between the hammer and the lower bearing housing plus a set of spring , so too rear axle when wearing a certain buffer , suitable for use in traction hoist pieces larger self , the use of attention on both sides of equal weight hammer block , avoid heavy.
Since bucket elevator has a small footprint , full sealed transmission, reduce environmental pollution, is commonly used in conveying bulk material handling equipment .
Bucket elevators work in order to stabilize the normal operation of the traction needed for tensioning member tensioning force is called the tension generated ; keep running tension is called the minimum initial tension , the tension is too early to accelerate parts wear in , initial tension is too small , traction wheel slip or towing parts and pieces of deflection , is not working properly . Tractor parts with tape, ring chain , plate chain several structures , performance is not the same, so the selection of the tensioning method is also different , the current methods commonly used tensioning screw tensioning tensioning lever hammer , hammer tensioning , composite tension and so on.
Screw mounted on the lower part of the chassis , nut U-shaped groove in the support plate , when the rotary screw , they can move the support plate , the lower bearing is fixed on the support plate, thereby enabling lower tension roller to pull pieces . This method is suitable for tensioning the tape for traction member using bucket elevators , the tape a certain degree of flexibility , when given elongation , the adjustable tensioning screw , in order to ensure stability of the work tape .
The hammer lever tensioning force acts on the support plate , fixed to a lower bearing support plate , so that the lower part of the pulling element driven sprocket taut. This is an automatic tensioning device , hammer follower lever has a certain resistance, traction member to stay in the skin with a certain tension, so that the stable operation of the drive in the chain hoist is usually applied to avoid slipping off the chain and the application effect.
Tensioning hammer , hammer gravity via the bracket directly to the lower bearing housing , the pulling of the lower driven sprocket member taut, and the hammer lever tensioning methods, to achieve the same tension , more weight . So commonly used in weight pulling pieces larger plate chain hoist in position space is small, automatic tensioning method .
Composite tension , combined with the spring hammer , pressure in the lower bearing seat, so that the lower part of the traction drive wheel parts taut, composite tension in between the hammer and the lower bearing housing plus a set of spring , so too rear axle when wearing a certain buffer , suitable for use in traction hoist pieces larger self , the use of attention on both sides of equal weight hammer block , avoid heavy.
2013年9月26日星期四
Heavy hammer crusher working principle and scope
Hammer Mill hammer , also known as broken, is to simulate the movement of animals to complete two jaw crusher crushing materials . Widely used in mining industry in various ores and medium-grained bulk materials broken . Hammer Crusher can crush materials of the highest compressive strength 320Mpa.
Hammer crusher works:
This series of hammer crusher works for the song moving extrusion type, and the hammer broke works: moving jaw hanging on the mandrel can be used as swing around the eccentric shaft rotates, the rod up and down reciprocating motion. Such crusher crank double linkage, although the moving jaw broken by a great reaction force , and its eccentric shaft and connecting rod has a large discontinuity . In addition, this work hammer crusher , jaw on the trajectory of each point are based on an arc centered on the mandrel , the crushing ratio of 3-6 i usually because of the trajectory is simple, it is referred to simply swing the hammer crusher. Simple pendulum crusher compact and simple structure , the eccentric shaft transmission parts smaller force ; vertical displacement of the movable jaw because smaller processing materials have less excessive fragmentation of the phenomenon, so this hammer crusher mobile jaw jaw plate wear small.
Hammer crusher purpose and scope :
1 , the series crusher is mainly used in metallurgy, mining, chemical, cement, construction, refractories and ceramics and other industrial sectors for medium pieces and crushing of hard ores and rocks with .
2 , the series crusher best suited to crushing compression strength not higher than 300MPa ( MPa ) of various hard and soft ore , the largest block of material to be broken shall be not greater than the required technical parameters .
Hammer crusher works:
This series of hammer crusher works for the song moving extrusion type, and the hammer broke works: moving jaw hanging on the mandrel can be used as swing around the eccentric shaft rotates, the rod up and down reciprocating motion. Such crusher crank double linkage, although the moving jaw broken by a great reaction force , and its eccentric shaft and connecting rod has a large discontinuity . In addition, this work hammer crusher , jaw on the trajectory of each point are based on an arc centered on the mandrel , the crushing ratio of 3-6 i usually because of the trajectory is simple, it is referred to simply swing the hammer crusher. Simple pendulum crusher compact and simple structure , the eccentric shaft transmission parts smaller force ; vertical displacement of the movable jaw because smaller processing materials have less excessive fragmentation of the phenomenon, so this hammer crusher mobile jaw jaw plate wear small.
Hammer crusher purpose and scope :
1 , the series crusher is mainly used in metallurgy, mining, chemical, cement, construction, refractories and ceramics and other industrial sectors for medium pieces and crushing of hard ores and rocks with .
2 , the series crusher best suited to crushing compression strength not higher than 300MPa ( MPa ) of various hard and soft ore , the largest block of material to be broken shall be not greater than the required technical parameters .
Hammer crusher hammer and wear resistance of materials related
Hammer Mill is the first invention and application of crushing equipment, because it works is simple and practical , is to use the material on the line broken hammer banging on the line operation principle , not difficult to see from here the whole hammer hammer crusher equipment important is self-evident , it directly affects the machine 's efficiency and crushing hardness, so for hammer crusher hammer is a key component is the largest , at present, is made of high manganese steel hammers Because there is not enough high manganese steel wear resistance, abrasion resistance is poor, life is short, requiring frequent replacement. These factors affect the life of the hammer .
Hammer crusher is a major gap within the rotor body and back plate , grate , and the gap between the hammer. If the product material exists, but can not expect from the plot of the grate on the depressed hammer , the hammer will be a serious friction and wear. Therefore, the use of the process , part of the gap to be adjusted frequently , it is in the proper range .
A hammerhead structure design and the quality of the heat-treated product hammerhead design and geometry , their mechanical properties and microstructure within the great impact . Especially large thickness dimension of the hammer , the impact is more prominent. Since the defects , most of the weight of the initial period of breakage. Therefore, the production of the hammer must develop a reasonable casting and heat treatment process.
Hammer crusher is a major gap within the rotor body and back plate , grate , and the gap between the hammer. If the product material exists, but can not expect from the plot of the grate on the depressed hammer , the hammer will be a serious friction and wear. Therefore, the use of the process , part of the gap to be adjusted frequently , it is in the proper range .
A hammerhead structure design and the quality of the heat-treated product hammerhead design and geometry , their mechanical properties and microstructure within the great impact . Especially large thickness dimension of the hammer , the impact is more prominent. Since the defects , most of the weight of the initial period of breakage. Therefore, the production of the hammer must develop a reasonable casting and heat treatment process.
2013年9月17日星期二
Troubleshooting belt conveyor
Belt deviation
To address such failures is important to note the dimensional accuracy of installation and daily maintenance. There are several reasons for deviation, to be based on the difference between handling different reasons.
1 Adjust the Belt Conveyor idlers bearing belt in the middle of the entire belt conveyor idlers deviation, adjust the position to adjust the deviation; idlers in the manufacture of both sides of the mounting holes are worked into holes for be adjusted. Specific adjustment method, the specific method is biased which side of the belt, idlers which side of the belt toward the forward direction forward, backward, or the other side. Figure 1 shows the direction of the belt upward deviation is lower roller group should be located at the left, the upper roller group moved to the right place.
2 Install aligning roller group aligning roller group has many types such as an intermediate shaft type, four-link, vertical roller type, etc. The principle is the use of block or roller rotates in the direction in the horizontal plane lateral thrust block or generate the Automatic belt adjustment belt deviation reaches to the heart of the purpose. Average total length of the belt conveyor or belt conveyor shorter run time using this method bidirectional more reasonable, because the shorter belt conveyors easier deviation and not easy to adjust. And long belt conveyor is best not to use this method, because self-aligning roller group life belt use would have some impact.
3 Adjust the drive pulley and the driven pulley and bend pulley position adjustment bend pulley belt deviation adjustment is an important part. Because a belt conveyor with at least two to five rollers, all the rollers must be perpendicular to the installation location of the longitudinal direction of the belt conveyor centerline, if the skew is too large deviation inevitable. Adjustment Method and its group of similar idlers. For the head drum as the drum belt deviation to the right, the right of the bearing should be moved forward, the belt deviation to the left of the drum, the left bearing housing should be moved forward, also the corresponding After moving the left or right side bearing housings after the shift. Rear roller adjustment method and the head drum opposite. Adjustment method. After repeated adjustments until the belt transferred to an ideal location. Adjust the drive or bend pulley in the best pre-install its exact location.
4 tension belt tension adjustment at the adjustment at the conveyor belt deviation adjustment a very important part. Hammer at the upper two tensioning idler pulley in addition to other than perpendicular to the longitudinal direction of the belt should be perpendicular to the vertical line of gravity, which is to ensure its axis horizontal centerline. Tensioning screw or hydraulic cylinders with tension, the tension of the two roller bearing shall simultaneously pan, to ensure the longitudinal direction of the drum axis and perpendicular to the belt. Specific method of adjusting the belt deviation adjustment of the drum at similar.
5 reprinted point blanking position on the belt deviation of reproduced material blanking at the point position on the belt deviation has a very big impact, especially in the two belt conveyor in the horizontal plane perpendicular to the projection of a greater impact. Usually reproduced points should be considered down two belt conveyor relative height. The relative height of the lower horizontal velocity component of the material the greater the impact on the lower side of the belt is greater, while the material is difficult to center. The cross section of the material on the belt deflection, resulting belt deviation. If the material is biased to the right, then the belt deviation to the left, and vice versa. In the design process should be possible to increase the relative height of two belt conveyor. In space-constrained mobile bulk material handling machinery down funnel, guide trough and other pieces of form and size should be seriously considered. General guidance for the width of the trough belt width should be about two-thirds more appropriate. In order to reduce or avoid the belt deviation increase blocking plate blocking materials, changing direction and position of the whereabouts of the material.
6-way running conveyor belt deviation adjustment bidirectional running belt conveyor belt deviation adjustment than the one-way conveyor belt deviation relative to the adjustment much more difficult, specific adjustments should be adjusted in a certain direction, and then adjust another direction. Adjust the belt to carefully observe the movement direction of the relationship with the deviation trend, individually adjusted. Emphasis should be placed on the drive pulley and bend pulley adjustments, followed by the adjustment of the roller and the material blanking point adjustment. Also note that the belt when the belt curing joint cross the longitudinal direction of the force evenly in the use of both sides of the chain traction force equal as possible.
To address such failures is important to note the dimensional accuracy of installation and daily maintenance. There are several reasons for deviation, to be based on the difference between handling different reasons.
1 Adjust the Belt Conveyor idlers bearing belt in the middle of the entire belt conveyor idlers deviation, adjust the position to adjust the deviation; idlers in the manufacture of both sides of the mounting holes are worked into holes for be adjusted. Specific adjustment method, the specific method is biased which side of the belt, idlers which side of the belt toward the forward direction forward, backward, or the other side. Figure 1 shows the direction of the belt upward deviation is lower roller group should be located at the left, the upper roller group moved to the right place.
2 Install aligning roller group aligning roller group has many types such as an intermediate shaft type, four-link, vertical roller type, etc. The principle is the use of block or roller rotates in the direction in the horizontal plane lateral thrust block or generate the Automatic belt adjustment belt deviation reaches to the heart of the purpose. Average total length of the belt conveyor or belt conveyor shorter run time using this method bidirectional more reasonable, because the shorter belt conveyors easier deviation and not easy to adjust. And long belt conveyor is best not to use this method, because self-aligning roller group life belt use would have some impact.
3 Adjust the drive pulley and the driven pulley and bend pulley position adjustment bend pulley belt deviation adjustment is an important part. Because a belt conveyor with at least two to five rollers, all the rollers must be perpendicular to the installation location of the longitudinal direction of the belt conveyor centerline, if the skew is too large deviation inevitable. Adjustment Method and its group of similar idlers. For the head drum as the drum belt deviation to the right, the right of the bearing should be moved forward, the belt deviation to the left of the drum, the left bearing housing should be moved forward, also the corresponding After moving the left or right side bearing housings after the shift. Rear roller adjustment method and the head drum opposite. Adjustment method. After repeated adjustments until the belt transferred to an ideal location. Adjust the drive or bend pulley in the best pre-install its exact location.
4 tension belt tension adjustment at the adjustment at the conveyor belt deviation adjustment a very important part. Hammer at the upper two tensioning idler pulley in addition to other than perpendicular to the longitudinal direction of the belt should be perpendicular to the vertical line of gravity, which is to ensure its axis horizontal centerline. Tensioning screw or hydraulic cylinders with tension, the tension of the two roller bearing shall simultaneously pan, to ensure the longitudinal direction of the drum axis and perpendicular to the belt. Specific method of adjusting the belt deviation adjustment of the drum at similar.
5 reprinted point blanking position on the belt deviation of reproduced material blanking at the point position on the belt deviation has a very big impact, especially in the two belt conveyor in the horizontal plane perpendicular to the projection of a greater impact. Usually reproduced points should be considered down two belt conveyor relative height. The relative height of the lower horizontal velocity component of the material the greater the impact on the lower side of the belt is greater, while the material is difficult to center. The cross section of the material on the belt deflection, resulting belt deviation. If the material is biased to the right, then the belt deviation to the left, and vice versa. In the design process should be possible to increase the relative height of two belt conveyor. In space-constrained mobile bulk material handling machinery down funnel, guide trough and other pieces of form and size should be seriously considered. General guidance for the width of the trough belt width should be about two-thirds more appropriate. In order to reduce or avoid the belt deviation increase blocking plate blocking materials, changing direction and position of the whereabouts of the material.
6-way running conveyor belt deviation adjustment bidirectional running belt conveyor belt deviation adjustment than the one-way conveyor belt deviation relative to the adjustment much more difficult, specific adjustments should be adjusted in a certain direction, and then adjust another direction. Adjust the belt to carefully observe the movement direction of the relationship with the deviation trend, individually adjusted. Emphasis should be placed on the drive pulley and bend pulley adjustments, followed by the adjustment of the roller and the material blanking point adjustment. Also note that the belt when the belt curing joint cross the longitudinal direction of the force evenly in the use of both sides of the chain traction force equal as possible.
Belt conveyor design elements
1, work environment, status and condition
Need to consider the daily running of the time, frequency, belt service life, feeding and discharge methods.
Work environment conditions: ambient temperature, outdoor or indoor, environmental requirements, mobile or fixed, telescopic requirements.
2, the transmission line and the Belt Conveyor belt problems
To consider in detail the size of transmission line, comprising: angle, the maximum length, lifting height; straight segment, the curve segment size; connection size.
Belt: Maximum sag requirements, simulated friction coefficient, friction coefficient, the safety factor.
3, the nature of the materials and throughput
Need to consider the specific nature of the material, including: bulk density, angle of repose, material particle size, largest block of the situation, the humidity of materials, material wear resistance, adhesion and friction coefficient. Throughput, even when the material flow can be directly achieved throughput, material flow can be considered when non-uniform material flow gives basic statistics.
Need to consider the daily running of the time, frequency, belt service life, feeding and discharge methods.
Work environment conditions: ambient temperature, outdoor or indoor, environmental requirements, mobile or fixed, telescopic requirements.
2, the transmission line and the Belt Conveyor belt problems
To consider in detail the size of transmission line, comprising: angle, the maximum length, lifting height; straight segment, the curve segment size; connection size.
Belt: Maximum sag requirements, simulated friction coefficient, friction coefficient, the safety factor.
3, the nature of the materials and throughput
Need to consider the specific nature of the material, including: bulk density, angle of repose, material particle size, largest block of the situation, the humidity of materials, material wear resistance, adhesion and friction coefficient. Throughput, even when the material flow can be directly achieved throughput, material flow can be considered when non-uniform material flow gives basic statistics.
订阅：
博文 (Atom)