Middle storage bin material distributing device

A middle storage bin material distributing device comprises a middle storage bin body and a middle storage bin head cover fixedly arranged above the middle storage bin body, a feeding port is formed in one side of the middle storage bin head cover, a conveying mechanism conveys materials into the middle storage bin head cover through the feeding port, and a material distributing plate is vertically installed in the middle storage bin head cover in a sliding mode; the material distributing plate is fixedly connected with the driving device, and the driving device drives the material distributing plate to vertically move back and forth along the inner wall of the middle storage bin hood so as to block or release materials conveyed by the conveying mechanism; two discharging ports are formed in the bottom of the middle storage bin body and are symmetrical along the plane mirror where the material distributing plate is located. The concrete mixer is simple in structure and convenient to operate, materials can be