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[Chemical Knowledge]：Understand the working principle of normally closed solenoid valve and improve your equipment maintenance skills

Read： 542 Time：13months ago Source：Transform the World with Simplicity

As an important control element, solenoid valve is widely used in various mechanical and electrical equipment. It plays an important role in the automatic control system, such as controlling circuit switch, adjusting medium flow, pressure and temperature. In many types of solenoid valve, normally closed solenoid valve is a common type.

normally closed solenoid valve is composed of valve body, electromagnet, conical valve core and spring. Its working principle is relatively simple. When the external control electrical signal acts on the electromagnet coil, the electromagnet generates magnetic force to overcome the valve core The force of the spring makes the conical valve core out of contact with the valve seat, so that the medium flows inside the valve. When the control signal loses its function, the spring of the valve restores the conical valve core and contacts the valve core with the valve seat, thus realizing the closure of the medium.

In application, normally closed solenoid valves are widely used in the control and regulation of fluid, gas, steam, and gas pipelines, such as for urban tap water, thermal industry, environmental protection and other fields. It can be used in the control system of various media, including corrosive media and high temperature media. The normally closed solenoid valve also has the advantages of short starting time, compact structure, high reliability and adaptability to different control signals. Therefore, it forms a complete adjustment and control system in the automatic control system.

However, due to the normally closed solenoid valve for a long time, there will be some failures, such as the usual use of debris into the valve caused by blockage, electromagnet damage, spring failure, valve core corrosion and other issues. These problems may cause the control function of the solenoid valve to malfunction, resulting in the malfunction of the electromechanical equipment. Therefore, when using the normally closed solenoid valve, it is necessary to pay attention to the maintenance and maintenance of the equipment, especially to clean up the debris and foreign matter in the valve in time to ensure the smooth flow of the medium; at the same time, it is necessary to regularly check the magnetic circuit, terminal and iron core of the electromagnet; check the elasticity of the spring, and pay attention to daily cleaning and maintenance.
the working principle and application field of
normally closed solenoid valve is very important to us. Understanding its working principle and specification requirements can help us to better select and use equipment, and timely repair and maintain normally closed solenoid valve, so as to improve the working efficiency and leakage control ability of mechanical and electrical equipment, and protect our production and life.

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