Sludge discharging device of plate-and-frame filter press

The utility model discloses a mud unloading device of a plate-and-frame filter press, which comprises a plate-and-frame filter press main body arranged above a base, a mounting rack arranged between the plate-and-frame filter press main body and the base, a mud bucket arranged below the plate-and-frame filter press main body, a discharge port arranged on one side of the mud bucket, and a discharge port arranged on the other side of the mud bucket. A piston piece is arranged on one side of the mud bucket and is in threaded connection with the mud bucket; the feeding groove is formed in the upper end of the base, and a sludge collecting hopper is arranged above the base; the spiral material conveying shaft is arranged in the mud bucket, one end of the spiral material conveying shaft extends into the discharging opening, a motor is arranged on one side of the mud bucket, a sealing bearing is arranged at the contact position of the spiral material conveying shaft and the mud bucket, the bottom of the mud bucket o