Safety type shielding motor

A stator structure and a rotor structure which are of a closed structure are arranged, so that the motor is isolated from a corrosive medium, a rotating shaft, a rotor pressing ring, a machine base inner cylinder, a machine base outer cylinder, a front end cover and a rear end cover are all made of corrosion-resistant stainless steel materials, and a bearing is a corrosion-resistant graphite bearing. Therefore, the device is high in safety in operation. Part of the working liquid can enter the rear end cover along a gap of a stator and rotor structure, enters a hollow flowing cavity in a rotating shaft through a flowing through hole and flows out, and a spiral groove is formed in the outer wall of an inner cylinder of a machine base. By arranging the spiral groove, heat generated by the stator structure, the rotor structure and the bearing can be cooled by the flowing of the liquid, and the heat dissipation area is larger by arranging the spiral groove, so that the heat dissipation capability of the motor is