Do you know how to improve the stability and related performance of high temperature solenoid valves? Let's find out together.

For a long time, the research on the reliability and maintenance of high temperature solenoid valve has never stopped. High temperature solenoid valve plays a pivotal role in industrial production. If the solenoid valve has stability and quality problems in the production process, it will not only cause serious economic losses, but also hinder the production process. Therefore, it is very necessary to study, improve and optimize the performance related issues such as reliability and stability of high-temperature solenoid valves to improve output quality and meet the needs of various production lines.

In terms of design, it is to make corresponding improvements to the phenomenon of unstable performance such as tightening and failure of opening and closing that are often used in automatic control systems by high-temperature solenoid valve manufacturers. The design and optimization of the solenoid valve can be carried out from the following three aspects:

1) Add a labyrinth sealing structure to the middle part of the outer circle of the valve core. The medium suddenly expands from the channel after entering the tank cavity, and the output of the channel suddenly decreases, resulting in a sharp increase in resistance. The increase of the labyrinth seal structure is to reduce the leakage sharply through a series of strong resistance.

2) Surface treatment of the valve core to improve the surface hardness, so that the matching surface of the valve core and the screw cap is different. In order to make the surface roughness meet the requirements of the mirror surface, the outer surface of the valve core is precisely ground, thereby reducing the matching accuracy of the valve core and the valve core, so that the friction resistance of the valve core to the valve core steel moving up and down, preventing frequent work at high temperatures Causing a stuck phenomenon, which makes the valve core switch more flexible. In addition, the surface treatment can further improve the wear resistance of the valve core and further increase its service life.

3), increase the compensation structure. A sealing groove is added on the outer surface of the pilot solenoid valve core, and an elastic ring and an elastic sealing ring are arranged in the groove. The advantage of the elastic ring is that the clearance of the piston can be eliminated by tension deformation.

During normal operation of the solenoid valve, the distance between the valve core and the wear of the valve cavity increases due to the continuous sliding of the valve core up and down. Using the tensile force of the elastic ring and the elastic sealing ring, the wear of the main contact surface can be compensated to ensure that the solenoid valve is used for a long time without failure.

In addition, in addition to considering the design of reasonable structure and appropriate materials in appearance, it is also necessary to carry out important production process control in the inspection process of its key components during the manufacturing process. The key processes and special processes of high temperature solenoid valves and high pressure solenoid valves include floor processing, welding and refining. The precision machining of thread, bonnet and valve body is the core component of the solenoid valve. The key points are the inner hole of the screw cap, the outer diameter of the valve plug and the roughness of the sealing surface. The surface treatment of the valve cover is a key technological process. Due to the high surface hardness, high dimensional accuracy and easy deformation, it is necessary to carry out filter surface treatment on the plug. Hard seals are generally used for high temperature solenoid valve seals. In order to ensure that the sealing performance meets the specified requirements, the seat sealing surface and the valve core seal need to be ground. The sealing surface of the valve plug and the valve seat adopts a double grinding process, so that the roughness of the sealing surface is greater than 0.2 μm.

Through the analysis and improvement of high temperature solenoid valve production design, manufacturing and other aspects of research. Effectively solve the phenomenon of high temperature and explosion-proof solenoid valve stuck and unable to close. In addition, cleverly designed handling of the valve core and conduit chamber improves smoothness, reduces wear and extends service life. And make the solenoid valve adapt to changes in ambient temperature and frequent work, so that the valve can work on the entire system with high reliability and safety.