Stable fertilizer screening device

The utility model discloses a stable fertilizer screening device. The device comprises a box body which is obliquely arranged, the top of the box body is fixedly connected with a feeding mechanism. The inner side wall of the box body is fixedly connected with a screening mechanism; three discharging ports are formed in the side wall of the end, away from the feeding mechanism, of the box body, three flow guide pipes matched with the corresponding discharging ports are fixedly connected to the outer side wall of the box body, a vibration mechanism is fixedly connected to the bottom of the box body, four supporting legs are rotationally connected to the bottom of the box body, and a base is arranged below the box body. According to the damping device, through the cooperation of the U-shapedblocks, the supporting legs, the supporting rods, the supporting blocks, the fixing blocks and the springs, the effect that the springs support the supporting legs is achieved, and the damping function on the box body is achi