Pneumatic gravel aggregate discharging bin

The pneumatic gravel aggregate discharging bin comprises a bin body with the lower portion arranged in a hopper shape, a discharging port is formed in the bottom end of the bin body, a feeding port is formed in the top end of the bin body, air supply pipes are fixedly arranged on the outer wall of the lower portion of the bin body, inner cavities of the air supply pipes communicate with an inner cavity of the bin body, and a plurality of air supply pipes are arranged in the circumferential direction of the bin body at intervals; the ends, away from the bin body, of the air supply pipes jointly communicate with an air supply header pipe which is arranged in a closed-loop shape, the air supply header pipe communicates with a connecting pipe, and the end, away from the air supply header pipe, of the connecting pipe is used for being connected with a high-pressure air pump. The storage bin has the advantages that the gravel aggregate in the bin body is loosened, and the situation that the position, close to the d