Large-flux circulating water filtering device

The utility model discloses a large-flux circulating water filtering device which comprises a cylinder body and an upper cover, the upper end of the upper cover is fixedly connected with a connecting frame, the outer surface of the left side of the connecting frame is fixedly connected with a driving motor, and the output end of the driving motor extends into the connecting frame and is fixedly connected with a rotating shaft; a first bevel gear is fixedly connected to the end, away from the driving motor, of the rotating shaft, a second bevel gear is connected to the side wall of the first bevel gear in a meshed mode, a rotating rod is fixedly connected to the inner wall of the second bevel gear, a spiral cleaning brush is fixedly connected to the side wall of the bottom end of the rotating rod, and a filter screen is arranged on the inner wall of the barrel. A second connecting flange is fixedly connected to the upper surface of the barrel, a sewage draining exit is fixedly connected to one side of the inne