▎ 摘　　要

NOVELTY - The utility model claims a PTFE filter bag, comprising a conductive composite film one side seam of the bag body, the bag body is connected with a bottom ring, and the other side seam of the bag body is connected with the top ring, the outer surface of the bottom ring is provided with a first screw thread; the inner surface of the top ring is provided with a second screw thread, the position gap in the middle of the inner surface of the bag body is connected with the hoop, the ring and the hoop is movably connected with a bracket, and the bracket and the bottom ring are movably connected with a sleeve, the inside of said bag body close to one side of the movable bottom ring is set with a scraper, the inner surface of the bag body is provided with a felt, and the inner surface of the felt with a graphene, the inner surface of said graphene layer provided with a PTFE membrane. The utility model is provided with a series of structures, so the device can be screw thread connection in the process of using bottom ring and top ring, so the multiple groups of filter bags are connected together, the bag body can be contracted convenient storage, convenient to clean the inner part of the bag body dust, prevent the blockage, using optimization process.