Shaftless mute pump with integrated rotor

The invention discloses a shaftless mute pump with an integrated rotor. The shaftless mute pump comprises a first-stage volute assembly, a front bearing assembly, a stator component, a two-stage rotor component, a second-stage volute assembly and a rear bearing assembly. The stator part is composed of a stator casing, a stator core, a front flange and a rear flange. The rotor part is of an integrated structure composed of a rotor core, primary and secondary impellers and a rotor core pressing plate, the primary and secondary impellers are arranged on the two sides of the motor back to back, and the front and rear bearing assemblies are located on the inlet sides of the primary and secondary impellers respectively and installed in the primary and secondary volutes. The two-stage impeller and the rotor core form an integrated structure in a back-to-back mode, the overall rigidity and dynamic balance of the rotor are effectively improved, the front bearing and the rear bearing are designed at inlets of the two-s