Explosion-proof three-phase asynchronous motor

The invention relates to the technical field of three-phase asynchronous motors, in particular to an explosion-proof three-phase asynchronous motor. Comprising a shell and a main shaft penetrating through the center of the shell. The inner wall of the shell is fixedly connected with a stator corresponding to the rotor on the outer wall of the main shaft; one end of the main shaft extends to the outer side of the head of the shell to form an output shaft, and the other end extends to the outer side of the tail of the shell to be fixedly connected with fan blades; the tail part of the shell is fixedly connected with a mesh enclosure for covering the fan blades; a negative pressure sleeve is arranged on the inner wall, close to the head, of the shell; the negative pressure sleeves are uniformly arranged around the main shaft; one end of the negative pressure sleeve close to the main shaft and one end far away from the main shaft are both openings; according to the three-phase asynchronous motor, the negative pre