Tips for keeping pneumatic butterfly valves at home?
In order to rapidly attenuate the vibration of the frame and body, and improve the smoothness and warmth of the vehicle, pneumatic butterfly valves are generally installed on the vehicle suspension system. At present, two-way acting cylinder pneumatic butterfly valves are widely used on vehicles.
Pneumatic butterfly valve is a vulnerable part in the process of automobile operation. The working quality of pneumatic butterfly valve will directly affect the stability of automobile driving and the life of other parts. Therefore, we should keep the pneumatic butterfly valve in good working condition. The following methods can be used to check whether the pneumatic butterfly valve works well.
1. Stop the car after driving 10km on the road with poor road conditions, touch the shell of the pneumatic butterfly valve with your hand. If it is not hot enough, it means that there is no resistance inside the pneumatic butterfly valve, and the pneumatic butterfly valve does not work. At this time, you can participate in the appropriate lubricating oil, and then stop the test. If the shell is hot, it means that there is a lack of oil inside the pneumatic butterfly valve, and you should add enough oil; Otherwise, the pneumatic butterfly valve is invalid.
2. Press the bumper firmly, and then release it. If the car jumps 2 to 3 times, the pneumatic butterfly valve works well.
3. If the vehicle vibrates violently when it drives slowly and brakes urgently, it indicates that the pneumatic butterfly valve is faulty.
4. Dismantle the pneumatic butterfly valve to make it stand upright, clamp the lower connecting ring on the bench clamp, and pull and press the shock absorber rod several times. At this time, there should be stable resistance. The resistance of pulling upward should be greater than the resistance of pressing downward. If the resistance is unstable or no resistance, it may be the lack of oil inside the pneumatic butterfly valve or the damage of valve parts, and the repair or replacement of parts should be stopped.
After confirming that the pneumatic butterfly valve has problems or failure, check whether the pneumatic butterfly valve can leak oil or has traces of obsolete oil leakage. The oil seal washer and seal washer are broken, and the nuts of the oil storage cylinder cover are loose.
If oil leakage is found, first tighten the nuts of the oil cylinder head. If the pneumatic butterfly valve still leaks oil, it may be that the oil seal and sealing washer are damaged and invalid. Replace them with new seals. Assuming that the oil leakage cannot be eliminated, the shock rod should be pulled out. If it feels stuck or different in weight, further check whether the clearance between the piston and the cylinder barrel is too large, whether the piston connecting rod of the pneumatic butterfly valve is bent, and whether the surface of the piston connecting rod and the cylinder barrel are scratched or pulled.
If there is no oil leakage in the pneumatic butterfly valve, check whether the pneumatic butterfly valve joint pin, joint rod, joint hole, rubber bushing, etc. are damaged, desoldered, split or scattered. If the above inspection is normal, the pneumatic butterfly valve shall be further synthesized to check whether the fit clearance between the piston and the cylinder barrel is too large, whether the cylinder barrel is strained, whether the valve seal is good, whether the valve clack and valve seat fit tightly, and whether the extension spring of the pneumatic butterfly valve is too soft or broken. The method of grinding or replacing parts shall be adopted according to the situation.
In addition, the pneumatic butterfly valve will show the disadvantage of making noise in theoretical application, which is mainly due to the collision between the pneumatic butterfly valve and the leaf spring, frame or shaft, the damage or scattering of the rubber pad, the deformation of the dust cylinder of the pneumatic butterfly valve, the lack of oil and other reasons, the cause should be found out and repaired.

Application of stainless steel pneumatic butterfly valve in industry
Stainless steel pneumatic butterfly valve has good flexibility, temperature resistance, pressure resistance and corrosion resistance. It is suitable for steam, water, oil and various industrial gases, drugs and other media. Heat shrinkage absorption and vibration absorption play an important role in the movement of pipeline system.
The model length and connection mode are based on the user's request.
Detailed introduction: The stainless steel pressure resistant stainless steel pneumatic butterfly valve is a flexible element used to escort various media by weaving one or more layers of steel wire or steel belt net sleeves outside the stainless steel pneumatic butterfly valve, with connectors or flanges at both ends. Features: corrosion resistance, high temperature resistance, low temperature resistance (- 196 ℃~+420 ℃), light weight, small size, good flexibility. It is widely used in aviation, aerospace, petroleum, chemical industry, metallurgy, power, paper making, wood, textile, construction, medicine, food, tobacco, transportation and other industries. Stainless steel pneumatic butterfly valve (metal bellows), stainless steel pneumatic butterfly valve, stainless steel bellows, stainless steel metal flexible connector, including stainless steel wire braided hose, fluid escort metal bellows, stainless steel pump shock absorption hose, stainless steel fire hose, stainless steel corrugated compensator The stainless steel bellows of gas machinery completely conforms to the domestic industrial specifications. Order and quality of stainless steel pneumatic butterfly valve