Pneumatic butterfly valve and spring-loaded pneumatic butterfly valve are two different pneumatic butterfly valves, which are quite different, but their role is to reduce vibration. So when selecting pneumatic butterfly valves,
Many people don't know whether they want to buy pneumatic butterfly valves or tension spring pneumatic butterfly valves. In fact, we should first understand the differences between the two to know their detailed uses.
Characteristics of pneumatic butterfly valve:
1. High elasticity and viscoelasticity;
2. Compared with steel raw materials, the elastic deformation is very large and the elastic modulus is very small;
3. The impact stiffness of is greater than the dynamic stiffness, and the dynamic stiffness is greater than the static stiffness, which is conducive to reducing the impact deformation and dynamic deformation;
4. The stress-strain curve is an elliptical hysteresis line, and its area is equal to the vibration energy (damping) converted into heat in each period of sensation, which can be adjusted through formula planning; 　　
5. Non compressibility data (Poisson's ratio is 0.5); 　　
6. The shape can be selected freely, the hardness can be adjusted through formula planning, and the requirements of stiffness and strength in different directions can be satisfied;
7. Its natural frequency is difficult to reach below 5HZ;
8. Its ability to resist environmental and high temperature changes is weak, and its life span is short;
9. No sliding part, easy to maintain.
Characteristics of tension spring pneumatic butterfly valve:
1. Low frequency planning, good vibration isolation;
2. It has strong adaptability to the operating environment and can operate normally at - 40 ℃ - 110 ℃. It plays a significant role in active vibration isolation, passive vibration isolation, shock oscillation and solid sound transmission;
3. Wide load scale and strong adaptability.