Water-turbine flat-plate sealing device convenient to maintain

The invention relates to a water-turbine flat-plate sealing device convenient to maintain. The water-turbine flat-plate sealing device can effectively solve the problem that the existing flat-plate sealing device is not easy to maintain and rubber flat plates are easy to damage during replacement. The technical scheme is as follows: the water-turbine flat-plate sealing device comprises a supporting plate, a first rubber flat plate, a second rubber flat plate, a rotating ring and a sealing box, wherein the supporting plate is provided with the first rubber flat plate and the second rubber flat plate in sequence; the sealing box and the rotating ring are arranged on the second rubber flat plate; the rotating ring is arranged in the sealing box; the supporting plate, the rotating ring and the sealing box are of split structures respectively, and the split structure consists of a left flap body and a right flap body; the left flap body and the right flap body of the supporting plate are staggered and jointed toge