Heat dissipation type fan

The utility model discloses a heat dissipation type draught fan, and particularly relates to the draught fan field, the heat dissipation type draught fan comprises a draught fan frame and a connecting hollow rod, the inner wall of the draught fan frame is fixedly connected with a support, one side of the support is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a fan, and the output end of the first motor is fixedly connected with a second motor. When the fan is installed in a place with batting and chippings for use, the first motor is usually started firstly to drive the fan to rotate on the support, so that air circulates at the two ends of the fan frame, the heat dissipation aluminum sheets play a role in heat dissipation of the first motor, and the fan is driven to rotate on the support when the fan is installed on the place with batting and chippings. Batting and chippings can be adsorbed on the filter screen by the fan and attached to the filter screen