Characteristics of pneumatic butterfly valve:
1. The shape of the pneumatic butterfly valve can be arbitrarily selected, so that the stiffness in the three directions of up and down, left and right, front and back can be obtained through the reasonable design of valve elements, which can greatly simplify the structure of the pneumatic butterfly valve.
2. Pneumatic butterfly valve has deformation characteristics in three directions, and large error is allowed during installation.
3. It can be firmly combined with metal.
4. Due to its damping characteristics, it absorbs vibration energy and converts it into heat energy. Its shock absorption capacity is much greater than that of metal, especially suitable for high-frequency vibration.
5. The shock absorber has simple structure, convenient use and maintenance, almost no need for repair, no wear, no rust, no need for oil lubrication, is insensitive to the role of water and dust, does not produce sudden damage in use, is safe and reliable, low cost and has a long enough service life.
As the pneumatic butterfly valve has the above characteristics, it is widely used on the bogie of the running part of the locomotive. The pneumatic butterfly valves used on electric locomotives include central support cone, axle box pull rod elastomer, side bearing stack, motor suspension pad, elastic wheel, elastic gear, air ball valve, bow block and ball hinge of transmission device, coupler buffer, etc.