Flue gas filtering and purifying device

The utility model relates to the technical field of smoke purification, in particular to a smoke filtering and purifying device which comprises a smoke exhaust pipe, the upper end and the lower end of the smoke exhaust pipe are communicated with a shell and a water tank respectively, the inner wall of the smoke exhaust pipe is fixedly connected with a frame, the inner wall of the frame is fixedly connected with a filter screen, and a sealing assembly is arranged between the shell and the smoke exhaust pipe. The device has the beneficial effects that the primary filter screen for filtering smoke dust in industrial smoke can be cleaned through vertical movement and autorotation of the connecting column and the plurality of brush sheets, and the plurality of brush sheets can be cleaned while cleaning the primary filter screen; and the multiple brush pieces are conveniently hidden and do not make contact with industrial smoke when not used, the using effect of the multiple brush pieces is guaranteed, the long-ter