Instructions for selecting the length of intermediate rollers of industrial conveyor belts

The idler in the belt conveyor machinery is mainly used to support the conveyor belt and reduce the running resistance. Due to its different assembly form, it will affect the conveying capacity of the conveyor. In addition, the idler is a large number of parts in the belt conveyor. Its structure, shape and assembly method have a great influence on the normal operation, use effect, production investment and operating cost of the belt conveyor.

The number of beams of the individual rollers in the branch roller group on the belt conveyor is different. At present, the common one is a group of three. The assembly structure of the upper branch roller group is generally trough type, which is mainly caused by It is composed of three rollers of equal length. This form is mainly used to reduce the impact of the bulk material on the supporting rollers on both sides when conveying bulk materials, so as to extend the service life of it and the industrial transportation belt. At the same time, the structure of the supporting rollers is also considered. Uniform form and interchange in use, but this isometric structure does not consider the impact of materials with different accumulation angles on the conveying capacity of the belt conveyor. It is conveying granular materials such as pulverized coal, grains, sand and chemical products. At this time, we should improve the conveying capacity of the belt conveyor and prolong the service life of the idler. Therefore, it is necessary to start from the length of the intermediate idler to analyze the influence on the conveyor capacity of the conveyor to find the use length of the intermediate idler of the conveyor belt. .

As far as the conveying capacity of the conveyor is concerned, the length of the intermediate roller should be appropriately shortened, and the advantages of shortening the length of the intermediate roller, in addition to improving the conveying capacity, can also reduce the load borne by the intermediate roller, thereby extending it When the groove angle of the side roller is 30 degrees, the load on the middle roller is 70% of the total load, and the load on each side roller is only 14.5% of the total load. , It can be seen that when conveying large materials such as raw coal, it is more reasonable to use equal-length rollers, but for conveying granular materials such as pulverized coal, grain, sand and chemical products, a shortened intermediate roller is used. The length is reasonable.

The length of the intermediate roller will gradually decrease with the increase of the dynamic accumulation angle of the material and the increase of the groove angle of the side roller. When conveying bulk granular materials, if the required industrial conveyor belt bandwidth is not too large, it can be known that The range value between the intermediate rollers, so if the belt width you need is less than one meter, including one meter, you can appropriately widen the gap between the two rollers and cancel the intermediate roller to form a double roller group. The existing belt conveyor adopts a double roller set for this reason. The load on each roller is smaller than when three rollers are used, and the service cycle will increase accordingly.