Plastic film conveying limiting dust removal device

The utility model relates to a plastic film conveying limiting dust removal device which is provided with a base, the middle of the base is rotatably connected with a plurality of bearing rollers, portal frames are arranged on the front side and the rear side of the base, each portal frame is provided with a lifting block and a check ring, the lifting blocks are connected with the portal frames in a sliding mode, and the check rings are located above the lifting blocks. The left side of the base is rotationally connected with a screw rod, a connecting plate is in threaded connection between the two lifting blocks, the connecting plate is in threaded connection with the screw rod, the right side of the base is provided with a hinged support and a supporting rod, and a Y-shaped support is hinged to the hinged support; two dust removal suction heads are arranged on the Y-shaped support in parallel, and the supporting rod and the Y-shaped support are in threaded connection with fixing screws. The film limiting an