Leakage-proof check fluorine-lined plug valve

The utility model discloses a leak-proof check fluorine lining plug valve, which comprises a valve body, a valve cover and a fluoroplastic lining layer, filtering structures are arranged on both sides in the valve body, flange plates are fixed on both sides of the valve body, a fixing structure is arranged at the top end of the valve body, the valve cover is arranged at the bottom end of the fixing structure, and the fluoroplastic lining layer is arranged in the valve body. The fixing structure comprises a hinge seat, a connecting frame, a pressing plate, a lead screw and a limiting block, the hinge seat is fixed to the bottom end of the valve body, and the connecting frame is installed on one side of the hinge seat. The lead screw is rotated to drive the pressing plate to be separated from the limiting block, the connecting frame is pushed to enable the pressing plate to be separated from the top of the valve cover, the valve cover is lifted to open the valve body to replace the plug cock, and therefore the