High-sealing flange butterfly valve for natural gas

The utility model relates to the technical field of valve manufacturing, in particular to a high-sealing flange butterfly valve for natural gas, which consists of a flange structure and a valve body, and the right side of the flange structure is connected with the valve body in an embedded manner; the flange structure comprises a connecting disc, a limiting disc, a sleeve and a spring buckle installed on the sleeve. The top of the rotating shaft penetrates through the valve body and is connected with a rotating ring. The flange structure is connected with the valve body in a multi-section sealing mode, the problems of gas leakage at the sealing position and the like are reduced, the sealing performance of the connecting position is improved, meanwhile, the locking mechanism is adopted for conducting sealing and locking operation on the connecting position of the valve body and the flange structure, and the sealing performance of the valve body is improved. The problem that the flange structure falls off due t