Ventilation device for coal mine ventilation and prevention exploitation

The utility model belongs to the technical field of coal mines, and discloses a ventilation device for coal mine ventilation and protection exploitation, which comprises a ventilation pipe used for leading in fresh air, supporting plates are fixedly connected to two ends of the peripheral side of the ventilation pipe, through grooves are formed in the top ends of the supporting plates, and the two supporting plates are respectively provided with a threaded rod and a sliding rod through the through grooves. The bottom end of the threaded block is rotatably connected with a rotating rod, the bottom end of the rotating rod is rotatably connected with the sliding block, the side face of the rotating rod is fixedly connected with a brush rod, the side face of the brush rod is provided with a brush used for cleaning dust, the end face of the ventilation pipe is provided with a filter screen, and the brush of the brush rod makes contact with the filter screen. According to the dust removal device, the rotating brush