Self-suction type multi-stage centrifugal pump with integrated disc type motor

The self-suction type multi-stage centrifugal pump with the integrated disc type motor comprises a shell assembly, a rotating mechanism and a driving mechanism, and the shell assembly comprises an outer shell, a volute and a water inlet pipe; the rotating mechanism comprises an impeller, and the impeller is rotationally arranged in the volute; the driving mechanism comprises a rotor, a stator and a winding, the rotor is fixed to the impeller, the stator is fixed to the inner wall of the volute and coupled with the rotor, and the winding is wound around the stator. The self-priming centrifugal pump has the beneficial effects that the stator and the rotor are integrated to the volute and the impeller correspondingly, the impeller does not need to be driven to rotate through an external motor, the size of the whole self-priming centrifugal pump can be reduced, meanwhile, the stator and the rotor are arranged in water in the volute, natural heat dissipation can be achieved through water in the volute, and the ser