Pneumatic butterfly valve: daily inspection of automobile pneumatic butterfly valve?
The pneumatic butterfly valve is to improve the ride comfort and warmth of the car. The pneumatic butterfly valve is installed inside the suspension system of most cars. What should be done for the daily inspection of the pneumatic butterfly valve?
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.
Do you check your pneumatic butterfly valve daily? Assuming never, try the above methods! It will be helpful for you to check the pneumatic butterfly valve!

Introduction to HDXZ-A series rotary compensator: it is composed of rotary cylinder and elbow, and its combination modes are Π The compensation principle is to form a couple through a pair of rotating cylinders and L arm, so that a pair of forces with equal size and opposite direction rotate around the center of Z axis by the arm, so as to reach the absorption of thermal elongation generated by pipes on both sides of the couple.
Safety comparison:
1. Due to the structural characteristics of the sleeve type compensator, when installing the device, the different axial degrees of the pipeline are ≯ 1%, so it is necessary to "find the center strictly" to avoid excessive friction during operation, leakage and even seizure, so additional guide brackets are required. The rotary compensator does not have the problem of "centering", so no additional guide support is needed.
2. Due to the structural characteristics of the sleeve type compensator, when installing the device, the different axial degrees of the pipeline are ≯ 1%, so it is necessary to "find the center strictly" to avoid excessive friction during operation, leakage and even seizure; The rotary compensator does not have the problem of "centering"; 3. The exposed high brightness sliding surface of the sleeve type compensator is easy to be bruised and corroded, so it is easy to leak; The rotating cylinder of the rotary compensator is equipped with a stop ring, friction reducing and centering bullets, and a reasonable sealing surface structure is adopted, so that the wear of the sealing data and sealing surface is extremely slight, which can ensure that leakage will not occur for a longer time, greatly increasing the safety and reliability of the work after the above calculation and analysis, We can conclude that compared with the sleeve type compensator, the rotary compensator has the advantage of significantly reducing the construction cost of the project, and its structure is simple, the device is convenient, and there is no need for maintenance, which overcomes the defects of the sleeve type compensator, such as easy leakage and the need to stop production for maintenance. Therefore, rotary compensator should be applied in overhead pipeline.