Rotary filtering membrane automatic cleaning device

The utility model discloses a rotary automatic cleaning device for a filter membrane. The rotary automatic cleaning device comprises a box body A, a filter box and a box body B, the outer side of the box body B is in bolted connection with a motor A for driving the rotating shaft A to rotate; the power output end of the rotating shaft A is connected with the power input end of a cross rod, a filtering membrane for filtering water is fixed to the outer side of the cross rod through screws, a motor B for driving a rotating shaft B to rotate is connected to one side of the filtering box through bolts, the power output end of the rotating shaft B is connected with the power input end of a lead screw, and the outer side of the lead screw is in threaded connection with a threaded sleeve; the screw rod drives the threaded sleeve to transversely move on the outer side of the screw rod, and a supporting rod driving the brush body to move is welded to the outer side of the threaded sleeve. Through the motor A, the rota