Butt-clip type check valve capable of preventing jamming

The utility model relates to the field of check valves, in particular to an anti-locking wafer type check valve which comprises a valve body, one end of the valve body is fixedly connected with a fixing pipe sleeve, and a threaded pipe is fixedly installed on one side of the fixing pipe sleeve. Through the arrangement of the fixing pipe sleeve, the threaded pipe, the fixing clamping groove, the anti-clamping filter screen, the buffer frame, the buffer groove, the damping reset rod and the non-return ring, when the wafer type check valve is installed and used in a pipeline, before fluid passing through the wafer type check valve passes through the valve body, impurities and dirt contained in the fluid are filtered out through the anti-clamping filter screen, and then the fluid passes through the valve body. The probability that impurities and dirt are accumulated in the valve body is reduced, the probability that the device is stuck in the valve body is also reduced, then the rebound capacity and the anti-fati