Dustproof motor shell of three-phase asynchronous motor

The utility model relates to a dustproof motor casing of a three-phase asynchronous motor, which comprises a casing body and a slip ring, the casing body is cylindrical, the surface of the casing body is of a screen type structure, the surface of the casing body is provided with a sliding rail along the casing body, the slip ring is of an annular structure, the inner wall of the slip ring is provided with a brush, the inner wall of the slip ring is provided with a boss, and the brush is arranged on the boss. And the sliding ring is sleeved on the outer surface of the shell, so that the brush is abutted against the shell, and the boss is matched with the sliding rail, so that the sliding ring translates relative to the shell along the sliding rail, and by adopting the dustproof motor shell of the three-phase asynchronous motor, the dustproof performance of the motor is improved, the service life of the motor is prolonged, and the service life of the motor is prolonged. And meanwhile, the function of cleaning d