Valve plate of butterfly valve

The utility model discloses a valve plate of a butterfly valve. The invention belongs to the technical field of valves, wherein the semicircular plate hinges are arranged on the two sides of the shaftsleeve and are arranged on the same plane. The method is characterized in that the method is characterized by comprising the following steps; grooves are formed in the arc-shaped outer edges of the plate hinges; a groove communicated with the groove is formed in the side surface of the plate hinge; the groove and the groove form an island-shaped boss on the side surface of the plate page; the periphery of the island-shaped boss is sleeved with a sealing ring. A through hole is formed in the sealing ring; the through holes are filled with filling liquid, one section of the sealing ring is embedded in the groove, the other section of the sealing ring is located in the groove, an arc-shaped elastic piece is arranged in the groove, the middle of the arc-shaped elastic piece extrudes the sealing ring, the two ends of