Closed belt conveyor is a type of belt conveyor that adds protective covers and other enclosed facilities on the basis of the original belt conveyor, in order to prevent material overflow or dust from flying out during material transportation. It is generally used for horizontal or uphill transportation of chemical materials and granular materials. The equipment material can be carbon steel spray coating or stainless steel, and the belt material can be PVC PE、 Dingqing rubber, PU, etc., with large conveying capacity and wide applications