Dust collector motor

The utility model discloses a dust collector motor, which comprises a rear support, a rear cover arranged on the rear side of the rear support, an aluminum alloy shell connected to the front side of the rear support, a shaft core arranged in the aluminum alloy shell, and an air duct cavity formed by stacking an air duct rear blade, an air duct front blade A and an air duct front blade B arranged on the front side of the aluminum alloy shell, a front support is arranged on the outer side of the air duct cavity. The air duct rear blade, the air duct front blade A and the air duct front blade B are arranged in a stacked mode, so that the radian and the length of the air duct are increased, the leakproofness of the air duct is improved, airflow backflow and air leakage are reduced after airflow enters the air duct to rotate, the suction force of the dust collector and the effective power of a motor are improved under the condition that the rotating speed and the power of the motor are not increased, and the servi