There are various sorting methods for belt conveyors. The conveyor belt structure for transporting materials can be divided into two types. One type is a common belt conveyor. In the process of transporting materials in the conveyor belt, the belt conveyor is in the upper belt. The trough shape, the lower belt is flat, the conveyor belt is supported by the roller, and the outer shape of the conveyor belt is flat; the other type is a belt conveyor with special structure, each having its own conveying characteristics.