In order to control the belt material and dust of the return belt, the cleaning performance of the head of the belt must be guaranteed. The installation space of the cleaner and the operation space of maintenance personnel can be ensured by increasing the size of the hopper at the head of the conveyor and raising the height of the head frame. The sweeper is equipped with a polymer head sweeper, and the second sweep is equipped with two-stage sweeping devices (one-stage rotary drum sweeper (electric roller brush) and one polymer polyurethane sweeper). 2mm stainless steel plate is laid in the head funnel to facilitate the flow of cleaning materials without accumulation. If necessary, consider the return belt cleaning device.
As an upgrading form of general belt conveyor, closed belt conveyor has the advantages of good sealing, good environmental protection conditions, simple structure and saving comprehensive investment. It is especially suitable for open trestle. The coal conveying system of thermal power plant adopts open trestle with closed belt conveyor, which can beautify the appearance of coal conveying system and improve the operating conditions of coal conveying system. It is a major improvement and innovation of conveying equipment in thermal power industry.