Classification and use of bulk material conveying equipment in Yichang

Classification and use of bulk material conveying equipment in Yichang

The belt conveyor is composed of the middle frame of the belt and the idler of the driving device tensioning device. The belt is used as the traction and bearing component to continuously transport the bulk materials or finished products

Belt conveyor is a kind of equipment driven by friction to transport materials in a continuous manner. It can be used to transport materials on a certain conveying line, from the beginning of the feeding point to the end of the unloading point to form a material conveying process. It can not only transport broken materials, but also transport pieces of goods. In addition to pure material conveying, it can also match the requirements of the technological process in the production process of various industrial enterprises, The belt conveyor is widely used in various modern industrial enterprises

Universal belt conveyor is composed of conveyor belt, idler, roller and drive, brake, tension, diversion, loading, unloading, cleaning and other devices

① Conveyor belt

There are two kinds of rubber belt and plastic belt in common use The rubber belt is applicable to the working environment temperature between - 15 and 40 ° C. The material temperature is not more than 50 ° C. The inclination angle for upward conveying of bulk materials is 12 ° to 24 °. For large inclination conveying, the patterned rubber belt can be used. The plastic belt has the advantages of oil resistance, acid resistance, alkali resistance, etc., but poor adaptability to the climate, easy to slip and aging. The belt width is the main technical parameter of the belt conveyor

② Idler

There are single rollers (the wrap angle of the belt to the roller is 210 °~230 °), double rollers (the wrap angle is 350 °) and multiple rollers (for high power). There are grooved idlers, flat idlers, centering idlers, and buffer idlers. The grooved idlers (composed of 2~5 rollers) support the bearing branches to transport bulk materials. The centering idlers are used to adjust the transverse position of the belt to avoid deviation. The buffer idlers are installed at the receiving place to reduce the impact of materials on the belt

Technical advantages of belt conveyor:

First of all, the belt conveyor operates reliably. In many important production units that need continuous operation, such as coal conveying in power plants, bulk material conveying in steel and cement plants, and ship loading and unloading in ports, the belt conveyor is used. If it is stopped in these occasions, the loss is huge. If necessary, the belt conveyor can work continuously one shift after another

The power consumption of the belt conveyor is low. Because the material and the conveyor belt almost have no relative movement, not only the running resistance is small (about 1/3-1/5 of the scraper conveyor), but also the abrasion and breakage of the cargo load are small, and the productivity is high. These are conducive to reducing production costs

The conveyor line of the belt conveyor has strong adaptability and flexibility. The length of the line is determined according to the needs. It can be as short as a few meters and as long as more than 10km. It can be installed in small tunnels, or it can be erected in the air above the ground traffic chaos and dangerous areas

According to the requirements of the technological process, the belt conveyor can receive materials from one or more points flexibly. It can also discharge materials to many or several sections. When feeding materials to the conveyor belt at several points at the same time (such as the conveyor under the coal bunker of the coal preparation plant) or conveying materials to any point along the length of the belt conveyor through the uniform feeding equipment, the belt conveyor becomes a main conveying trunk

The belt conveyor can take materials from the roadway under the coal storage yard, and can mix different materials in different piles when necessary. The materials can be simply discharged from the conveyor head, and can also be discharged at any point along the length of the conveyor belt through the plough unloader or mobile unloading truck

(2) Screw conveyor, commonly known as auger, is suitable for horizontal conveying, inclined conveying, vertical conveying and other forms of granular or powdered materials. The conveying distance varies according to different deformities, generally from 2 meters to 70 meters

Conveying principle: the rotating spiral blade will push the material and carry out the conveying of the screw conveyor. The force that makes the material not rotate with the spiral conveyor blade is the weight of the material itself and the friction resistance of the spiral conveyor shell to the material

Structural features: spiral blades are welded on the rotating shaft of the screw conveyor, and the surface types of the blades are solid surface type, belt surface type, blade surface type and other types according to the different conveying materials. The screw shaft of the screw conveyor has thrust bearings at the end of the material movement direction to provide axial reaction with the material to the screw. When the machine length is long, the middle hanging bearing should be added

Double screw conveyor is a screw conveyor with two rotating shafts welded with rotating blades. To put it plainly, it is to organically combine the two screw conveyors to form a screw conveyor

The rotation direction of the rotating shaft of the screw conveyor determines the conveying direction of the material. However, the general screw conveyor is designed according to the single conveying. When the reverse conveying is used, the service life of the conveyor will be greatly reduced