Screw pump body

The utility model provides a pump body of a screw pump, and belongs to the technical field of water pumps. The problem that an existing screw pump is poor in stability is solved. The screw pump body comprises a support and a pump cylinder, the lower end of the pump cylinder is sleeved with and fixed to the support, a rubber stator, a screw located in the rubber stator, a water outlet section, a valve seat and a cover plate are arranged in the pump cylinder, the water outlet section, the valve seat and the cover plate are cylindrical and sequentially arranged from top to bottom, the two ends of the valve seat are tightly pressed on the water outlet section and the cover plate respectively, and a valve element is arranged in the upper end of the valve seat. An annular face used for supporting the cover plate upwards is formed on the inner wall of the pump cylinder, an annular flange is formed on the outer wall of the upper end of the water outlet section and fixedly connected with the support through a circle o