Stacking fan of control rod driving device

The utility model discloses a stacking fan of a control rod driving device. The stacking fan comprises a cylindrical case which is provided with an air inlet and an air outlet, a motor and an impeller are arranged in the case, the impeller is in transmission connection with the motor, a motor mounting cylinder is arranged in the case, a plurality of guide vanes distributed in the axial direction are arranged between the outer wall of the motor mounting cylinder and the inner wall of the case; the motor is fixed in the motor mounting cylinder, and an output shaft of the motor faces to the direction of the air outlet; and ventilation ports are arranged at the peripheral wall of the motor mounting cylinder. The stacking fan of the control rod driving device provided by the utility model has good heat resistance and is suitable for the cooling of the control rod driving mechanism.