Internal cleaning mechanism for waste gas treatment device

The internal cleaning mechanism for the waste gas treatment device comprises a cylinder, lifting mechanisms are fixedly mounted on the left side and the right side of the lower end in the cylinder, connecting plates are fixedly connected to the output ends of the lifting mechanisms, and a mounting frame is fixedly connected between the tops of the connecting plates; a first ventilation opening and a second ventilation opening are formed in the top and the bottom of the mounting frame correspondingly, mounting structures are fixedly connected to the upper end and the lower end of the interior of the mounting frame correspondingly, an activated carbon filter plate and a filter cotton filter plate are clamped into the mounting structures correspondingly, containing grooves are formed in the upper ends of the outer sides of the mounting frame correspondingly, and cleaning sponge pads are bonded into the containing grooves correspondingly; multiple sets of water injection holes are formed in the upper end of the o