Donkey-hide gelatin preparation filter with self-cleaning structure

The donkey-hide gelatin preparation filter with the self-cleaning structure comprises a water pipe, a blow-off pipe, a tank body and a sliding sleeve, supporting legs are welded to the lower end of the outer wall of the tank body, a tank cover is connected to the upper surface of the tank body in a clamped mode, a discharging port is formed in the lower surface of the tank body, an arc-shaped filter screen is installed at the upper end of the inner wall of the tank body through bolts, and the arc-shaped filter screen is connected with the sliding sleeve through bolts. A rotating pipe is rotatably mounted in the middle of the inner wall of the tank body, the end, exposed out of the tank body, of the rotating pipe is rotatably mounted in the water pipe, square blocks are symmetrically welded to the rotating pipe, the square blocks are movably sleeved with sliding sleeves, sliding rods are symmetrically and slidably mounted on the sliding sleeves, one ends of the sliding rods are welded to the outer wall of the