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.

The stainless steel pneumatic butterfly valve is made of stainless steel SUS304 or SUS301, which is used as the maintenance tube for wires, cables, optical fibers, automatic instrument signal lines and the maintenance tube for wires and cables of instruments. The outer diameter can range from 3mm to 150mm. The small diameter stainless steel pneumatic butterfly valve (outer diameter of 5mm to 25mm) is used for the maintenance of fine electronic equipment and sensor lines, the maintenance of fine optical ruler sensing lines Industrial sensor line maintenance. Excellent flexibility, corrosion resistance, high temperature resistance, abrasion resistance and tensile strength
Device request:
1. The bending radius of the pneumatic butterfly valve shall not be less than 6 times of the outer diameter of the hose.
2. The spacing between fixed points of pneumatic butterfly valve is ≤ lm, and the spacing between pipe clamp and terminal, elbow midpoint should be 300mm.
3. The fixed pipe clamp at the end of the pneumatic butterfly valve connected with the embedded lamp or similar appliance should be installed at lm along the length of the hose from the edge of the lamp and appliance.
4. The pneumatic butterfly valve shall be firmly grounded, but shall not be used as the grounding conductor of electrical equipment.