Scraper conveyor belongs to traction chain conveyor. It can convey all kinds of powdery, small granular and lumpy bulk materials with good mobility, such as ore, coal, sand, gypsum, cement, grains, etc. It is widely used in metallurgy, grain, power plants, ports, and underground occasions of mines such as coal, salt, gypsum, etc. However, it is not suitable for conveying the brittle materials which are easy to be crushed and abraded.
The basic structure consists of head, tail, Coal Mining Scraper Conveyor chain, transition tank, center tank (also known as chute) and baffle. With the use of different places and supporting equipment, scraper conveyor performance and structure are also different. The basic structure of scraper conveyor is laid flat on the bottom plate, generally fixed installation, no need to move during operation. The head consists of driving device, head frame, sprocket assembly and base. The tail is the assembly that makes the scraper chain return to the running assembly. Scraper chain consists of scraper, circular chain, chain ring and bolts, Scraper conveyor, etc. It is the traction member and bearing member for continuous material transportation of plate conveyor.
Transition channel is divided into head transition channel and tail transition channel, the former connects the head frame and the center channel, the latter connects the tail frame and the center channel. The middle trough is the main body of the Scraper conveyor, which has the functions of supporting the cargo load and guiding the scraper chain. The baffle is installed on the side of the scraper conveyor to prevent material overflow. The working principle is realized by the scraper chain by engaging with the sprocket to realize the movement in the trough, which belongs to the chain transmission principle. Endless to the plate chain is driven by the abundant dynamic sprocket for closed cycle movement. The scraper chain moves in the upper and lower troughs to take away the bulk materials loaded in the troughs and complete the task of conveying materials. The tail sprocket can be the main wheel or the guide wheel. The Scraper conveyor tensioning device provides a certain tensioning force for the chain to ensure the normal closing and separating of the chain and the sprocket.
According to the working environment, it can be divided into general-purpose scraper conveyor, mining trough transfer machine and mining face scraper conveyor; according to the unloading method, it can be divided into end-unloading type, overlapping side-unloading type, cross-side-unloading type and 900 corner type; according to the type of trough, it can be divided into steel-type kay-loading trough, stone casting trough, enameled trough; according to the scraper chain type, it can be divided into mining circular chain, sleeve roller chain and detachable die forging chain; according to chain, it can be divided into small, light, medium and super-heavy. According to the maximum working load, it can be divided into small, light, medium, heavy and super heavy.
According to the installation mode, it can be divided into fixed type and removable type. The components of Coal Conveyor displacement type are easy to be disassembled and re-installed for use after displacement. According to the scraper type, it can be divided into high scraper type, tube type and mining type. High scraper type scraper high out of the trough: tube type trough for the round tube, scraper for the disc-shaped: mining type is a mining high-strength circular chain as the traction components of the Scraper Conveyor.
