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[Chemical Knowledge]：Detailed explanation of the working principle and use method of air pressure reducing valve

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Air pressure reducing valve is a common new energy auto parts. It is mainly used to adjust the air pressure, ensure the stability of the internal air pressure of the system, and protect other parts of the system from pressure shock through the buffering effect of the pressure reducing valve. This article from the working principle and the use of two aspects to detail the air pressure reducing valve.

1. working principle

air pressure reducing valve is a two-position control hydraulic valve. When the air source pressure (I. e., the pressure before the valve) from the downstream part is transmitted back to most of the air cavity above the spool, the spool will be subjected to rising force, so that the pilot valve is in the working position, so that the pressure before the valve passes downstream The outlet of the part is released slowly and steadily, so as to achieve the purpose of decompression. At the same time, due to the drop of the valve core, the liquid between the upper injection chamber and the lower end of the valve core is connected to each other, so as to provide the valve core with smooth movement. The difference between the

air pressure reducing valve and the traditional pressure reducing valve is that it is realized by the principle of "gas heavy liquid light. When the outlet pressure of the pressure reducing valve drops to a certain extent, the pressure reducing valve will keep its open state, so that the pressure of the air source before the valve will be released slowly. If the working pressure of the downstream part reaches the design value, the valve core will be forced to close the valve and keep the gas source of the downstream part unchanged.

2. use method

1. Selection: Selection of suitable air pressure reducing valve for the normal operation of the system is very important. In the selection should pay attention to the flow, the use of pressure range, pipe diameter and target applications, to ensure that the selection of air pressure reducing valve can meet the requirements of the system.

2. Installation: When installing the air pressure reducing valve, pay attention to the sealing degree of the joint to ensure that the valve does not leak, so as to ensure the stable operation of the system.

3. Debugging: During debugging, the caliber of the outlet and the pressure of the outlet should be gradually adjusted according to actual needs to achieve the expected flow and pressure effects.

4. Maintenance: In the process of using the air pressure reducing valve, pay attention to check the sealing of the valve, the support of the valve cover and the degree of wear of the valve body, and regularly replace the more worn parts.

3. Scope of application

air pressure reducing valves are widely used in new energy vehicles and pneumatic automatic control systems, such as automotive air suspension systems, pneumatic braking systems, compressed air transmission systems, hydraulic systems, etc. It can provide stable airflow and pressure, and protect other components in the system from pressure shocks, thereby extending the service life of the system.

air pressure reducing valve is a very important and widely used technology, which has a wide range of applications in the field of industry and transportation. I hope that the content of this article can help you better understand the working principle of the air pressure reducing valve, use and maintain its performance correctly, so that it can play a greater role in engineering practice.