Working principle of pneumatic ball valve:
Inject air into the deformable sealing container, and realize the elastic effect of the ball valve through the compressibility of air. For example, the pneumatic ball valve system of a bus is mainly composed of pneumatic ball valve, height control valve, differential pressure valve and additional air chamber. During operation, compressed air enters the pneumatic ball valve air reservoir from the main air pipe of the train, and enters the pneumatic ball valve through the height control valve. When the air pressure in the ball valve is charged to a constant air pressure, the car body rises to the predetermined balance position.
Advantages of pneumatic ball valve:
Compared with the metal ball valve, the pneumatic ball valve has excellent flexibility, and can adjust the air pressure with the change of load, which greatly improves the comfort of the car during driving. At the same time, the pneumatic ball valve can well isolate high-frequency vibration, enhance the comfort of riding, reduce noise, and increase the service life of parts. The pneumatic ball valve has no lateral rigidity, so the connecting rod must be added when using the non independent suspension system, while it is placed at the position of the ring ball valve when using the independent suspension system.
Pneumatic ball valve, also known as concrete precast hollow slab inflatable core mold, bridge inflatable core membrane, internal mold It shall be used for the pouring and forming works of highway bridge concrete pre tensioned and post tensioned beams. It is also used for culvert drainage works. Pneumatic ball valve is a kind of internal mold with different shapes that can be expanded and shortened by vulcanization of high polymer and high-strength fiber cloth (it is a commodity made by vulcanization with fiber reinforcement layer).
The pneumatic ball valve has high compressive strength, elasticity and air tightness. After the compressed air is filled, the expansion expansion reaches the section planning requirements. The inflation pressure is determined according to the manufacturer's logo. It can also extract the capsule from the cavity. It is simple in use, economical in use, soft and short when not inflated, arbitrarily folded and bent, and has enough strength to accept the pressure of concrete after inflated. It can replace the original wood mold, bamboo mold and steel mold, and can be repeatedly used. It is a kind of concrete products supporting goods that can reduce costs and accelerate construction progress.