▎ 摘　　要

NOVELTY - The utility model claims a fresh air device for processing graphene belonging to the graphene field of processing, aiming at the problem that it is not convenient to disassemble and change the filter layer structure at the pipeline depth and the filter layer outside the air supply pipeline is easy to be blocked, comprising a pipe body, the top part of the pipe body is fixedly connected with a fixing plate, the inner part of the fixing plate is provided with a movable groove, the inner part of the movable groove is connected with the inner part of the pipe body, one side of the movable groove is connected with a rod groove, the inner part of the rod groove is rotatably connected with screw thread rod, the top part of the rod screw thread through the fixing plate and extends to the outer part of the fixing plate, the position fixing sleeve at the external part of the fixing plate extended out of the screw thread plate is provided with a rotating handle; The utility model is convenient for the user to quickly disassemble and change the first filter net ring at the deep part of the pipe body, so it does not need to gradually disassemble the pipe body to realize the replacement work of the first filter net ring.