Screw Conveyor is widely used , be sure to use the screw conveyor for routine care and maintenance to prolong the life of screw machine . So how do you conduct routine maintenance and management of the screw conveyor ? Here we briefly introduced .
Screw conveyor transport of materials from the perspective of the direction of displacement divided into horizontal screw conveyor screw conveyor screw conveyor and vertical two types , mainly used for all kinds of powder , granular and small block, such as loose material horizontal transport and vertical lift , the aircraft is suitable for delivery of perishable, viscous , easy caking or high temperature , afraid of pressure , there is greater corrosive special materials . Press the conveyor made ??of high strength plastic , also known as food conveyor screw conveyor , spiral elevator, mainly applied to transport bulky products . Such as cardboard boxes , crates , bottled water.
Screw machine is widely used in various industries , such as building materials , chemical industry, electric power, metallurgy, coal charcoal, food and other industries , for horizontal or inclined conveying powder, granular and small bulk materials , such as coal, ash, slag , cement, grain etc. , the material temperature is less than 200 ℃. Screw machine suitable for transporting perishable , viscous , easy caking materials . In concrete mixing station , screw conveyor role has been the greatest manifestation . Chain plate conveyor is widely used in food, beverage, chemical and other industries. Used to achieve improved transfer of products , and other types of hoist conveyor compared with the conservation area , continuous conveyor and so on.
Rotating spiral blade for screw conveyor passage of the material transported , so that the material does not rotate together with the screw conveyor blade force is the material of its own weight and the frictional resistance of the material conveyor chassis . Rotating shaft screw conveyor spiral welded blades, blade face delivery of materials based on a solid surface different type , belt type face, leaves and other types of face . Screw conveyor screw axis in the direction of movement of the material with the thrust bearing to the terminal with the material to spiral axial reaction force , the captain longer, should be added to intermediate hanger bearings.
Screw in use , must pay attention to the daily maintenance , this will maximize the good fit with sand dryer , ensure the production capacity and efficiency, but also extend the life of the equipment .
1, should be timed to the bearings, gears and chains and other transmission parts lubricated .
2 , box delivery machine after disabling spiral blade should be checked for wear , wear serious welding .
3 , screw conveyor throughput can not be overloaded, otherwise no row materials , causing the screw shaft bending and box up bad .
4 , the transmission medium ju higher , you should pay attention to whether changes in the cabinet expansion card with a place without freedom , if urgently address .
5 , screw conveyor in operation , the noise piercing should be playing cover inspection , troubleshooting.
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2013年11月19日星期二
2013年11月5日星期二
Grinding machine works
Grinding and Fluting Machine work characterized by:
( A ) in the power system, the spindle 6 , the top-down order with bearing cap , radial ball bearings, bearing pads, thrust ball bearings , radial ball bearings.
( 2 ) In milling systems mill body by a spring mounted on the spindle , spring washer , internal grinding , external grinding adjustment nut and composition ;
( 3 ) in the separation system , mounted on the spindle above the brush , a spring , the lower brush has an adjustment nut . Use of blade cutting and high-speed airflow impact of the collision crushed the dual functions in one, and managed to complete the particle separation processing operations. In the cutting blade grinding process , along with high-speed airflow generated by the rotor blade cutting direction of rotation, the material in the air flow speed , and repeated impact of materials simultaneously subject to double crushing, grinding material accelerated rate .
( A ) in the power system, the spindle 6 , the top-down order with bearing cap , radial ball bearings, bearing pads, thrust ball bearings , radial ball bearings.
( 2 ) In milling systems mill body by a spring mounted on the spindle , spring washer , internal grinding , external grinding adjustment nut and composition ;
( 3 ) in the separation system , mounted on the spindle above the brush , a spring , the lower brush has an adjustment nut . Use of blade cutting and high-speed airflow impact of the collision crushed the dual functions in one, and managed to complete the particle separation processing operations. In the cutting blade grinding process , along with high-speed airflow generated by the rotor blade cutting direction of rotation, the material in the air flow speed , and repeated impact of materials simultaneously subject to double crushing, grinding material accelerated rate .
Grinding machine downtime can always clear material and anti- jam function
Grinding and Fluting Machine 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 grinding machine 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 .
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
Dynamic analysis of belt conveyor main problem to be solved
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 Belt 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.
Controllable Starting conveyor technology
With the Belt Conveyor, the traditional motor direct start or combined starter motor and coupler has far can not meet the requirements. Long distance, high speed belt conveyor as the starting load is large, and the operating speed is higher, it must be controlled during start, the speed curve starting at the best smooth start, the starting time, starting acceleration control within the allowable range .
According to China's relevant standards, starting acceleration shall not exceed 0.3 s, in order to reduce the dynamic load and instantaneous shock, conveyor belts and other meta while avoiding damage to components. Carried out abroad, a lot of research work, developed a corresponding controllable starting device, such as: frequency control devices, differential gear train viscous speeder, hydraulic speed control devices.
According to China's relevant standards, starting acceleration shall not exceed 0.3 s, in order to reduce the dynamic load and instantaneous shock, conveyor belts and other meta while avoiding damage to components. Carried out abroad, a lot of research work, developed a corresponding controllable starting device, such as: frequency control devices, differential gear train viscous speeder, hydraulic speed control devices.
2013年10月25日星期五
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 .
The performance characteristics of weightless paddle mixer
1 , the machine constant reverse rotation shaft through two special arrangement of blades , the material for the radial , circumferential and axial direction , and form the combined cycle , in a very short time to achieve uniform mixing .
2 , can be solid ( powder ) - solid ( powder ) ( particle size 20-2500 mesh ) mixed .
3 , according to user requirements , plus you can also spray and collet assembly to make it available as a solid ( powder ) - liquid ( liquid content < 15 %) of the mixing and drying equipment.
4 , the specific gravity , particle size greater difference in physical properties such as material mixing does not produce deflection , resulting in very uniform mixture.
5 , mixed precision , solid - solid mixed in 1: 1000 ratio , the standard deviation of three hundred thousandths ~ eight , content fluctuation error < 2% ( variance factor ) .
6, the Paddle Mixer speed , generally only ten minutes powder mixing .
7 , low energy consumption , a general mixer for 1/ 4 to 1 / 10 .
8, closed operation, balanced and reliable operation , easy maintenance.
9 , manual, electric , pneumatic material way for you to choose .
2 , can be solid ( powder ) - solid ( powder ) ( particle size 20-2500 mesh ) mixed .
3 , according to user requirements , plus you can also spray and collet assembly to make it available as a solid ( powder ) - liquid ( liquid content < 15 %) of the mixing and drying equipment.
4 , the specific gravity , particle size greater difference in physical properties such as material mixing does not produce deflection , resulting in very uniform mixture.
5 , mixed precision , solid - solid mixed in 1: 1000 ratio , the standard deviation of three hundred thousandths ~ eight , content fluctuation error < 2% ( variance factor ) .
6, the Paddle Mixer speed , generally only ten minutes powder mixing .
7 , low energy consumption , a general mixer for 1/ 4 to 1 / 10 .
8, closed operation, balanced and reliable operation , easy maintenance.
9 , manual, electric , pneumatic material way for you to choose .
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