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
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2013年11月19日星期二
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 .
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