Limiting type sealed cleaning device for vacuum suction moving roller

The limiting type sealing cleaning device comprises a roller body and glands at the two ends of the roller body, a flange is arranged at the gland at one end, an air suction pipe is arranged at the gland at the other end, a rocker arm is arranged on the air suction pipe, a sealing box is arranged in the roller body, a connecting device is arranged at the top of the sealing box, and the connecting device is fixed through a fixing device. The air suction pipe is arranged in the center of the interior of the sealing box, the cleaning device is arranged on the air suction pipe and fixed through a fixing plate, the cleaning device comprises two sliding blocks, sliding grooves are formed in the sliding blocks, fixing rings are welded to the bottoms of the sliding blocks, supporting seats are welded to the bottoms of the fixing rings, and the supporting seats are fixed through threaded holes. The two sliding grooves are connected through a supporting frame, a plurality of dredging columns are arranged on the plane o