Four Ways to Teach You to Check the Working Performance of Automotive Pneumatic Butterfly Valves Skillfully
Four methods can teach you to check the working performance of the pneumatic butterfly valve of the car. For driving on rough roads, the pneumatic butterfly valve is very important. Automobile pneumatic butterfly valve is usually installed on the automobile suspension system. If the pneumatic butterfly valve cannot work normally, it will reduce the life of parts in the automobile, and also greatly reduce the stability of the automobile. People sitting in the vehicle will also feel quite uncomfortable. Remind everyone to check whether the pneumatic butterfly valve can work properly before going out, especially when there are many uneven roads on a long journey.
The following is about how to check the working efficiency of pneumatic butterfly valves.
1. First, you can drive at a low speed and then brake hard. If you find that the car vibrates violently and the human body feels uncomfortable, then there is a problem with the pneumatic butterfly valve.
2. Press the bumper firmly, and then release it. If the car jumps 2-3 times, it indicates that the pneumatic butterfly valve works well.
3. 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, explain that there is no resistance inside the pneumatic butterfly valve, and the pneumatic butterfly valve does not work. At this time, take part in the appropriate lubricating oil, and then stop the test. If the shell is hot, the pneumatic butterfly valve is short of oil, and it should be filled with oil; Otherwise, the pneumatic butterfly valve is invalid.
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. Stop repairing or changing parts.
Oil leakage is one of the reasons for abnormal operation of pneumatic butterfly valve. If there is no oil leakage in the pneumatic butterfly valve, check whether the pneumatic butterfly valve joint pin, joint rod, joint hole, bushing, etc. are damaged, desoldered, cracked 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 fits tightly with the valve seat, and whether the extension ball valve of the pneumatic butterfly valve is too soft or broken. The method of grinding or replacing parts shall be adopted according to the condition.
If the problem that the pneumatic butterfly valve makes a noise is found, it is mainly caused by the collision between the pneumatic butterfly valve and the steel plate ball valve, the frame or the shaft, the damaged or scattered rubber gasket, the deformation of the dust cylinder of the pneumatic butterfly valve, and the lack of oil.
The above four methods can effectively test whether the pneumatic butterfly valve works normally. As for the first method, it is better to use less, because frequent emergency braking is likely to cause damage to the braking system. The second way is to introduce you to try the bumper method. It is convenient and effective. Before a long trip, check whether the pneumatic butterfly valve can leak oil. If it does, it will form the source of the problem of the pneumatic butterfly valve in the middle of the road.