Brushless DC motor protection device

The utility model discloses a DC brushless motor protection device comprising a DC brushless motor main body, a motor shaft is arranged on the DC brushless motor main body, a support is arranged on the outer wall of the DC brushless motor main body, a sleeve is arranged on the inner wall of the support, a brush is arranged on the sleeve, the upper end of the brush is in contact with the surface of the motor shaft, and the lower end of the brush is in contact with the surface of the motor shaft. An intercepting net is arranged at the lower end of the exhaust fan, baffles are arranged at the lower end of the intercepting net, and the baffles are distributed in a bilateral symmetry mode relative to the bisector of the dust collecting chamber. According to the direct-current brushless motor protection device, the bracket is arranged at the motor shaft of the direct-current brushless motor main body, the brush is arranged on the inner wall of the bracket, and the upper end of the brush is attached to the joint of