The utility model relates to the technical field of
coal mine ventilation and dust removal, and discloses a
coal mine ventilation and dust removal device which comprises a shell, the bottom of the shell is fixedly connected with a dust storage box, the interior of the shell is fixedly connected with a first dust inlet
pipe, one end of the first dust inlet
pipe is fixedly connected with a second dust inlet
pipe, and the exterior of the shell is fixedly connected with a first hood. A motor is arranged in the first
machine cover, the output end of the motor is fixedly connected with a
ratchet wheel, a limiting
assembly is arranged in the shell, a filter screen is arranged in the limiting
assembly, and one end of a movable column is arranged outside the limiting
assembly. According to the
coal dust filtering device, through rotation of the
ratchet wheel, the rolling wheel drives the movable column to move, so that the movable column drives the
fixed frame and the filter screen to move, then the
fixed frame and the filter screen are reset through the spring, and
coal dust particles on the surface of the filter screen can vibrate to prevent filtering equipment from being blocked to affect the filtering effect.