First, the structure of the ventilation valve

The vent valve is usually composed of a valve body, a valve plate, a spring and a regulating nut. The valve body is the main structure of the ventilation valve, which is divided into two parts: the inner cavity and the shell, and the inner cavity is equipped with the valve plate. The valve plate is generally made of porous material, and the surface has a certain finish and a vent hole, which is used to regulate the gas flow and pressure. Springs are used to provide a steady force, pressing the valve plate against the body to prevent gas leakage. The adjusting nut is used to adjust the tightness and pressure of the spring.

Second, the working process of the ventilation valve

The working process of the vent valve is based on the principle of pressure difference. When the outside gas flows into the chamber, the gas pressure will offset the force provided by the spring, and the valve plate will gradually move away until the gas emission occurs. On the contrary, when the pressure of the gas in the inner cavity is higher than the pressure of the outside gas, the gas will reverse flow into the inner cavity, and the ventilation valve will be closed. The vent valve has the function of automatic adjustment and can be automatically opened or closed under different pressure differences.

Third, the application field of the air vent valve

Ventilation valves are widely used in many industrial fields, such as petroleum, chemical, pharmaceutical, food, electronics and aviation. They are widely used in gas regulation, gas filtration, pressure control, temperature control and so on. For example, in the petroleum, chemical, pharmaceutical production process, the ventilation valve can be used to regulate the gas flow to avoid excessive pressure damage to the process equipment; In the food and pharmaceutical industries, ventilation valves can be used to filter impurities in the gas to ensure the health and safety of the production process.

Air vent valve is an important industrial equipment, which has the function of automatically regulating gas flow and pressure. They are widely used in various industrial fields and provide important support and guarantee for the production process.