Submersible pump for sewage treatment

The submersible pump for sewage treatment comprises a main body mechanism, a running mechanism and a water outlet mechanism, the running mechanism is connected to the lower end of the main body mechanism, the water outlet mechanism is arranged on the outer wall of the right side of the running mechanism, and a connecting mechanism is arranged at the top of the main body mechanism. The water outlet mechanism comprises a water outlet section, an internal thread, an external thread, a connecting piece and a water outlet pipe. According to the submersible pump for sewage treatment, the arranged main body mechanism is connected through flanges and fixed through bolts, a sealing ring is arranged in the main body mechanism, the sealing performance can be improved, water inflow and faults of an internal unit are prevented, a filter screen is arranged at the lower end of an impeller, too large foreign matter can be filtered out, blockage in the pump body is avoided, and the service life of the pump body is prolonged.