Multi-stage sanding fineness control screening device

The utility model discloses a multistage sanding fineness control screening device which comprises a main body, a feeding port is formed in one side of the upper end of the main body, the bottom of the feeding port is connected with a movable vibration frame in the main body in a penetrating mode, one side of the main body is movably connected with a movable plate through a hinge, the vibration frame is of a hollow structure, and the movable plate is connected with the bottom of the main body. Multiple sets of supporting blocks are arranged on the two hollow sides of the vibration frame, and a first filter screen and a second filter screen are arranged between the supporting blocks. According to the multi-stage sanding fineness control screening device, the motor fixed in the shell is used for driving the rotating disc arranged on one side to rotate, so that the rotating disc drives the vibration frame movably connected with the brake rod to move through the shaft rod, and then gravel is screened through the