Novel double-turn-off plug valve

The utility model discloses a novel double shut-off plug valve, which relates to the technical field of double shut-off plug valves, and comprises a double shut-off plug valve body, the bottom of the double shut-off plug valve body is provided with a flange port, the bottom of the flange port is provided with a sealing disc, and the outer ring of the sealing disc is provided with a mounting hole. According to the device, under the action of a sealing disc, an adjusting rod, a second bevel gear, a first bevel gear, a threaded rod, a threaded sleeve and an arc-shaped plate, the adjusting rod is manually operated, so that the second bevel gear is matched with the first bevel gear to drive the threaded rod to rotate in the threaded sleeve, and the threaded sleeve drives the arc-shaped plate to move in an annular sliding groove; according to the sliding piece clamping device, the sliding piece can be conveniently abutted and fixed, the clamped sliding piece and the sealing disc can be conveniently and synchronousl