composite exhaust Industrial Valves solved many problems, especially the problem of cylinder air tightness.

composite exhaust valve is a special kind of valve, used in closed material box, hopper and powder or granular materials. It consists of two high-pressure cast aluminium alloy half body, cylinder and the connection of stents, topped with mechanical limit switch. Can be used for the automatic feeder control, especially the measurement system of cement, brake cylinder of the cylinder piston adopts two type O sealing ring to seal cylinder gas in the body. In order to ensure the cylinder can switch and control type two and a half of exhaust valve Industrial Valves, but frequent cylinder piston within the cylinder reciprocating motion, exacerbate the contact with the cylinder wall type O sealing ring wear effect. Reduce 2 - type O sealing ring 3 the effective use of life, thus affecting the whole cylinder air tightness, and even lead to brake cylinder seal failure, make composite exhaust valve can't work normally.

in order to solve the existing technical problem of poor composite exhaust valve in the brake cylinder pressure tightness, also provides for dust pneumatic butterfly valve cylinder. So a composite exhaust valve, including switch is used to control the body movement of the brake cylinder, brake cylinder including cylinder block and cylinder linear guide cylinder assembly, described in the cylinder in the periphery of the nested set for fitting clearance cylinder piston and cylinder seal type O sealing ring, described in cylindrical piston type O sealing ring of the outside of the collar installation groove, the ring is installed on both sides of the seal ring groove is embedded, described the vice ring type O sealing ring on one side of the client has to the divergence type O sealing ring ring opening and radial slots on both sides of the wall of the circular groove, described two bulkhead and the wall of the cylinder piston seal surface and cylindrical periphery. Auxiliary seal ring for Y type sealing ring. Have a type O sealing ring, set in the middle position between the two secondary sealing ring.

pneumatic type exhaust Industrial Valves installed on the cylinder of the piston, type O sealing ring is equipped with auxiliary sealing ring on both sides. With type O sealing ring off the two ends of the circular matrix, there is a circular groove, oblique type O sealing ring opening of oriented, it is the radial side of the ring groove has a groove wall. Type O sealing ring can be broken at the ends of the cylinder piston and cylinder chamber separated, to ensure the normal use of cylinder. When the high pressure gas cylinder block through the cylinder of the gap between piston and cylinder block matching into type O sealing ring on one side of the secondary seal ring groove, under the action of high pressure gas, the sealing ring of the trench wall relative to the two circular groove outward open, work closely with the inner wall of the cylinder block and cylinder to live the Great Wall surface, in order to strengthen between the piston and cylinder gas sealing function; However, since there is no high pressure gas, the two type O sealing ring groove wall in the working state of the original, because they are located at the other side of the sealing ring (o-ring). The inner wall of the cylinder and the cylinder piston loose coordination between the outer surface of the seal, promote the columnar qian xuesen live in cylinder reciprocating sliding, extend the effective of cylinder gas seal life, improve the service life of the brake cylinder and the entire dust pneumatic butterfly valve.

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