Novel clutch actuator of dustproof structure

The utility model provides a clutch actuator with a novel dustproof structure, which comprises a pneumatic cylinder body and a piston component, and a mandrel and the cylinder body are welded into a whole to form the pneumatic cylinder body. The piston assembly comprises an inner dustproof cover fixing sleeve, an O-shaped ring, a piston sliding sleeve, a mandrel outer wall, a piston and a small leather ring, five annular grooves are formed in the piston, the inner dustproof cover fixing sleeve is arranged at the topmost end of the piston, an arc step is arranged on the outer ring of the inner dustproof cover fixing sleeve and matched with the O-shaped ring, and the annular grooves are formed in the outer ring of the inner dustproof cover fixing sleeve. An O-shaped ring is arranged between the outer ring of the inner dustproof cover fixing sleeve and the piston, so that the inner dustproof cover fixing sleeve is in transition fit with the mandrel, dust or other pollutants are prevented from entering the air pr