Heat dissipation shell of series excited motor

The utility model discloses a heat dissipation housing of a series excited motor, which comprises a ventilation heat dissipation mechanism, an adjusting motor and a fan motor, the adjusting motor and the fan motor are arranged in the ventilation heat dissipation mechanism, an opening and closing mechanism is arranged in the center of the top of the ventilation heat dissipation mechanism, and an opening and closing motor is arranged on one side of the bottom of the opening and closing mechanism. The ventilation and heat dissipation mechanism comprises a motor installation shell, ventilation and heat dissipation grooves are formed in the periphery of the motor installation shell, the adjusting motor is fixedly installed in the motor installation shell, a plurality of rotating shutters are rotationally connected into the ventilation and heat dissipation grooves, the output end of the adjusting motor is fixedly connected with an adjusting gear, and the adjusting gear is fixedly connected with the motor installati