How to judge the problem of electric butterfly valve and how to deal with it?
Under normal circumstances, if the electric butterfly valve of the car is broken, what is the disease? Xiao Bian comes to check with you!
1. Stop the car after driving 10km on the road with poor road conditions, touch the shell of the electric butterfly valve with your hand. If it is not hot enough, it means that there is no resistance inside the electric butterfly valve, and the electric 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, the electric butterfly valve is short of oil, and you should add enough oil; Otherwise, the electric butterfly valve is invalid.
2. Press the bumper firmly, and then release it. If the car jumps 2-3 times, the electric butterfly valve works well. When the car is running slowly and emergency braking occurs, if the car vibrates violently, it indicates that there is a problem with the electric butterfly valve.
3. Dismantle the electric butterfly valve and erect it, 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 electric butterfly valve or the damage of valve parts, and the repair or replacement of parts should be stopped.
Assuming that the electric butterfly valve presents a problem, it is really not a good news! What should I do!
The oil seal washer and seal washer are broken, and the nuts of the oil storage cylinder cover are loose. The oil seal and sealing washer may be damaged and invalid, so the seal shall be replaced with a new one. If the oil leakage still cannot be eliminated, the electric butterfly valve 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 electric 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 electric butterfly valve, check whether the electric butterfly valve connecting pin, connecting rod, connecting hole, bushing, etc. are damaged, desoldered, split or scattered. If the above inspection is normal, the electric 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 stretch butterfly valve of the electric butterfly valve is too soft or broken. The method of grinding or replacing parts shall be adopted according to the situation.
In theoretical application, the electric butterfly valve will present the defect of making noise, which is mainly caused by the collision between the electric butterfly valve and the steel plate butterfly valve, the frame or the shaft, the damage or scattering of the rubber gasket, the deformation of the dust cylinder of the electric butterfly valve, and the lack of oil. The cause should be found out and repaired. After the inspection and repair of the electric butterfly valve is stopped, the working performance test shall be stopped on a special test bench. When the resistance frequency is 100 ± 1mm, the resistance of its stretching stroke and tightening stroke shall conform to the rules, indicating that the electric butterfly valve is basically normal.
Check the possible problems of the electric butterfly valve in time and deal with them in time! This is my responsibility! The above content is the content compiled for you! If you need to reprint, please indicate the source!