Butterfly valve sealing structure

The utility model belongs to the field of butterfly valves, and particularly relates to a butterfly valve sealing structure which aims at solving the problem that the opening and closing torque of a valve is large due to the fact that the sealing effect is enhanced in the mode that a pressing plate extrudes a sealing piece, the butterfly valve sealing structure comprises a valve body, a valve seat, a valve shaft and a butterfly plate, and the valve shaft and the butterfly plate are arranged in the valve body. A valve channel communicated with the valve seat is formed in the valve body, the valve shaft rotates to enable the butterfly plate to open or close the valve channel, a sealing piece is detachably arranged on the butterfly plate, and the butterfly valve sealing structure further comprises a connecting assembly used for fixing the sealing piece to the butterfly plate and a storage structure used for storing media in the valve channel. The sealing piece is connected to the butterfly plate through the conn