How to reduce the vibration frequency of pneumatic ball valve (pneumatic ball valve) device
The pneumatic ball valve (pneumatic ball valve) is composed of air and has small internal friction, which will not affect the ability to isolate high-frequency vibration due to the inherent vibration of the ball valve itself. In addition, the pneumatic ball valve (pneumatic ball valve) has no metal to metal contact, so it can be soundproof and sound proof. Ball valve stiffness: when designing the stiffness of the pneumatic ball valve (pneumatic ball valve), it can be selected by changing the internal pressure of the ball valve, The stiffness is roughly proportional to the internal pressure, so the stiffness can be selected very low as required. For a pneumatic ball valve (pneumatic ball valve) with a given size, the stiffness is variable, and it changes with the load. Therefore, the natural vibration frequency is almost constant under any load, so it can make the supported system have almost constant performance
The pneumatic ball valve is connected to the additional air chamber, but the natural vibration frequency of the pneumatic ball valve device is reduced to 0.5 〜 3Hz. Under any load, the pneumatic ball valve can maintain a low and nearly equal vibration frequency. An orifice is added between the pneumatic ball valve and the additional air chamber. When the spring load vibrates, the air flows through the orifice, causing energy loss, Therefore, it plays the role of vibration attenuation. The fatigue resistance of pneumatic ball valve (pneumatic ball valve) is many times better than that of metal ball valve. For the fatigue test of the ball valve in the vehicle pneumatic ball valve suspension system, the steel plate ball valve only vibrates hundreds of thousands of times and then breaks, while the pneumatic ball valve has a vibration amplitude of 40mm The pneumatic ball valve is still intact after 5 million vibrations at a frequency of 2.7 Hz. The body structure of the pneumatic ball valve is soft, so it has a comprehensive vibration isolation effect in axial, transverse and rotary directions. The pneumatic ball valve is relatively inexpensive, easy to install and replace, simple to maintain, and does not need frequent maintenance or refueling. The pneumatic ball valve is widely used in commercial cars, buses, rail vehicles Self regulating air suspension for machine equipment and building base