The utility model provides a detachable pneumatic
cut-off
valve seat sealing structure, which relates to the field of pneumatic
cut-off valves, and comprises a valve body, the left side surface of the valve body and the right side surface of the valve body are connected with mounting flanges, the outer surface of each mounting
flange is provided with a group of mounting holes, and the mounting holes are communicated with the mounting flanges. And sealing grooves are formed in the left side surface and the right side surface of the mounting
flange. According to the detachable
valve seat sealing structure of the pneumatic
cut-off valve, the switching valve rod is driven by the pneumatic part, the switching block and the butterfly plate can be driven to rotate, opening and
cutting off of a fluid channel can be rapidly and accurately achieved, the response speed is high, the control precision is high, when the pressure in the valve body is too high, the sealing plate slides under the pressure effect, the spring and the buffer
damper are compressed, and the sealing effect is good. The fluid enters the pressure relief
assembly, the valve body is prevented from being damaged due to too
high pressure, the rotating
handle is rotated to drive the threaded lead screw to rotate, the initial position of the sealing plate can be flexibly adjusted, and therefore the pressure relief pressure is accurately adjusted.