Rotating speed readable motor of range hood

The utility model relates to a rotating speed readable motor of a range hood. The rotating speed readable motor of the range hood has the advantages of good heat dissipation and convenient assembling. A rotating shaft is axially provided with an installation hole penetrating the rotating shaft, and the central axis of the installation hole is superposed with the central axis of the rotating shaft; the first hole body, the second hole body and the third hole body of the installation hole successively communicate with each other, the aperture of the first hole body is disposed at one end of the rotating shaft, and the aperture of the third hole body is disposed at the other end of the rotating shaft; the first hole body is conical, and the second hole body and the third hole body are cylindrical; a fixation screw is a chamfer head screw; the fixation screw fixes the rotating shaft to the tail portion of a motor shaft and is installed in the installation hole in a penetrating mode, the tail portion of the fixation screw is connected with a threaded hole for fixation, and the head portion of the fixation screw is in contact with the first hole body; the central portion of the top portion of a housing is projected upwards to form a round-table-shaped surface; the top portion of the housing is provided with air holes, and the air holes communicate with a housing cavity; a rubber ring is fixed at the bottom of the housing and is arranged to encircle a stator hole; and the housing is fixed to the outer casing of a motor body, and the bottom of the rubber ring is in contact with the outer casing of the motor body.