Anti-caking sand unloading sand cylinder

The utility model discloses an anti-caking sand unloading sand cylinder which comprises an inner cylinder and an outer cylinder, an active sand discharging device is arranged in the inner cylinder, and the active sand discharging device is connected with a sand discharging port. The driving sand discharging device comprises a driving box arranged at the bottom of the inner barrel; rotational flowsand discharging pipes are rotationally arranged on the two sides of the driving box. Due to the symmetrically-arranged sand discharging openings, it can be guaranteed that the inner barrel and the two sides of the supporting plate descend at the same time during sand discharging, the stability of the bridge steel arch during sedimentation is guaranteed, and distortion of the bridge steel arch isreduced; the active sand discharging device is used for actively discharging bearing sand; the problem that the bearing sand is highly extruded is solved; meanwhile, the surfaces of the rotational flow sand discharging pipes a