Fecha de publicación: 22/12/2023 Fuente: WIPO "circular economy" The utility model discloses a concrete production material conveying device which comprises a base, a dustproof mechanism is arranged on the top of the base, a cleaning mechanism is arranged on one side of the dustproof mechanism, a conveying belt is movably connected to the inner wall of the base, the cleaning mechanism comprises a supporting frame, a lifting frame is slidably connected to the inner wall of the supporting frame, and a conveying belt is arranged on the lifting frame. A lower-layer brush is movably connected to the bottom of the lifting frame, a lower chain wheel is fixedly installed in the middle of the top of the lower-layer brush, a second threaded sleeve is fixedly connected to the end, located in the supporting frame, of the outer side wall of the lifting frame, and the lifting frame can be driven by rotating the control rod to drive the brush to descend. When the conveyor rotates, the brush can scrape dust and other residues on the surface of the conveyor, in addition, the brush can be adjusted in a rotating and sliding mode, the brush can move to the edge of the conveyor belt after rotating, at the moment, the brush can clean dust at the corners of the conveyor belt, and the cleaning effect is improved.