Permanent magnet synchronous grinding head motor

The utility model relates to the technical field of motors, and discloses a permanent magnet synchronous grinding head motor, which comprises a motor shell, three air inlet shells distributed annularly are arranged outside the motor shell, and a dustproof net is fixedly mounted at the top end of each air inlet shell through a screw; the fixing strip is arranged at the upper end in the air inlet shell, and bristles are arranged on the side, close to the dustproof net, of the upper end of the fixing strip; and the push rod is arranged on the left side of the exterior of the air inlet shell, penetrates through and extends into the air inlet shell, is fixedly connected with the fixing strip and is slidably connected with the air inlet shell, a reset spring is installed on the portion, located outside the air inlet shell, of the exterior of the push rod, and a fixing ring is arranged at the left end of the exterior of the push rod and is fixedly connected with the push rod. According to the dust-proof screen, the