Pressurized axial flow fan

The utility model discloses a pressurized axial flow fan which comprises an air duct, a driving fan blade arranged in the air duct and used for generating airflow, and a driving motor for driving the driving fan blade to rotate, the air blower is characterized in that a pressurizing fan blade for changing the air flow generated by the driving fan blade into the linear air flow from the spiral air flow is fixed in the air duct; a fixing sleeve for fixing the driving motor is fixed at one end, far away from the air duct, of the pressurizing fan blade; fixing end plates used for fixing a driving motor are fixed to the two ends of the fixing sleeve, and a plurality of locking holes are formed in the fixing end plates. A plurality of limiting grooves matched with the locking holes are fixed to the outer side of the driving motor. The driving motor penetrates through the locking hole and the limiting groove through a locking shaft so that the driving motor can be locked on the fixing sleeve. A locking end plate in