Waterproof sleeve for sewage treatment plant

The utility model discloses a sewage treatment plant waterproof casing pipe, which comprises a casing pipe body and a disc, a motor is fixed on the inner wall of the casing pipe body, a threaded rod is installed in the middle of the motor, a support is arranged at the end of the threaded rod, a sliding block is installed on the outer side of the threaded rod, and a limiting block is fixed at the bottom of the sliding block. Clamping grooves are formed in the outer sides of the limiting blocks, push rods are installed on the end sides of the sliding blocks, chucks are arranged at the ends of the push rods, supporting rods are fixed to the bottoms of the chucks, and waterproof pads are installed on the sides of the supporting rods. The water pipe body and the casing pipe body are kept horizontal by controlling movement of the supporting rod, the waterproof filler is evenly filled between the water pipe body and the casing pipe body, the waterproof effect of the casing pipe can be improved conveniently, meanwhil