Dust-free polishing head of wall polishing machine

The invention discloses a dust-free polishing head of a wall polishing machine. The dust-free polishing head comprises a motor and a polishing disc. The motor is installed in a case, a front bevel gear and a rear bevel gear are installed on a motor shaft of the motor, the front bevel gear on the motor shaft is engaged with a first gear output shaft, the rear bevel gear on the motor shaft is engaged with a second gear output shaft, the polishing disc is fixed to the first gear output shaft, the second gear output shaft is fixedly connected with blades, and the blades are located in a blade room. According to the dust-free polishing head of the wall polishing machine, the front bevel gear and the rear bevel gear are installed on the motor shaft of the motor and drive the polishing disc and the blades to rotate respectively, polishing and blade dust removing are integrated, and therefore dust escaping in the polishing process is greatly reduced; because the same motor shaft is adopted for driving the two output shafts to rotate, it is guaranteed that the polishing disc and the blades cooperate synchronously and work reliably, and the utilization rate is high; besides, the dust-free polishing head is simple in structure, flexible to operate and low in production cost.