Overflow-preventing pneumatic explosion-proof cut-off valve

The utility model relates to the technical field of stop valves, and discloses an anti-overflow pneumatic explosion-proof stop valve. The anti-overflow pneumatic explosion-proof stop valve comprises a protective cover, an arc-shaped block is fixedly installed on one side of the outer surface of the protective cover, a valve body is fixedly connected to the lower portion of the protective cover, a base is fixedly connected to the lower portion of the outer surface of the arc-shaped block, a controller is movably connected to the upper portion of the base, and a protective pipe is movably connected to the interior of the valve body. An air cylinder is fixedly connected to the interior of the protection pipe, one end of the air cylinder is movably connected with a movable rod, the outer surface of the air cylinder is movably connected with a mounting sleeve, and a detection unit is fixedly connected to the lower portion of the mounting sleeve. The movable rod in the air cylinder is used in a telescopic mode, the