Drum screen with knocking net cleaning device

The utility model discloses a drum screen with a knocking net cleaning device, which comprises a drum screen, a casing and a knocking mechanism, the drum screen is mounted in the casing, the knocking mechanism comprises a net cleaning shaft, a rotating plate, a knocking hammer and a transmission rod, bearing seats are mounted at two ends of the net cleaning shaft, a mounting seat is arranged on the top wall of the casing, and the rotating plate is mounted on the mounting seat. A flange plate is welded to the screen cleaning shaft, a rotating plate is fixedly connected with the flange plate, a knocking hammer is installed at the other end of the rotating plate and corresponds to the outer surface of the drum screen, a transmission rod is installed at one end of the screen cleaning shaft, a fixing shaft is arranged at the other end of the transmission rod, and a roller is arranged on the fixing shaft. An annular roller path is arranged on the outer surface of the roller screen in the circumferential direction.