Sludge discharge device for sewage treatment

The utility model discloses a sludge discharge device for sewage treatment, and relates to the technical field of sludge discharge devices. The sludge discharge device for sewage treatment comprises an upper end cover, the left lower end of the upper end cover is fixedly connected with a left wall, the side end of the left wall is fixedly connected with a water inlet, the inner wall of the left wall is slidably connected with a limiting block, and the outer wall of the side end of the limiting block is fixedly connected with a sliding wall. A fixing block is fixedly connected to the outer wall of the side end of the sliding wall, a clamping block is elastically connected to the inner wall of the fixing block through a clamping spring, and a releasing handle is fixedly connected to the outer wall of the side end of the clamping block. When the sludge discharge device for sewage treatment is used, the electric telescopic rod drives the filter screen, the filter screen drives the sliding wall to descend, sewage