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Solenoid Structure And Materials
Aug 15, 2017

Throughout the domestic and foreign solenoid valve, so far, Solenoid from the action can be divided into three categories are: direct-acting, recoil, pilot type, and from the valve structure and material on the different and the difference between the principle of Piston type can be divided into: diaphragm recoil solenoid valve, piston recoil solenoid valve; pilot type can be divided into: pilot diaphragm solenoid valve, pilot piston solenoid valve; from the seat and sealing material points Can be divided into: soft seal solenoid valve, Solenoid steel seal solenoid valve, semi-steel sealed solenoid valve.

Principle: Normally closed-type direct-acting solenoid valve is energized, the electromagnetic coil to produce electromagnetic force to the spool lift, so that the closure from the far away from the valve seat seal open; power, the electromagnetic force disappears, by spring force to close the component pressure The valve closes on the valve seat. (Often open with the opposite)

Features: in the vacuum, negative pressure, Solenoid zero pressure can work properly, DN50 can be installed below, but the larger magnetic head. Such as my company to introduce HERION company's technology to produce direct-acting solenoid valve can be used for 1.33 × 10-4 Mpa vacuum.

Principle: When energized, the electromagnetic force for driving the pilot valve to open the pilot valve, the main valve chamber pressure drops rapidly, creating a pressure differential in the chamber and down the main valve, the medium pressure to promote the shift of the main valve closure member, Solenoid the valve open; power down, The spring force to close the pilot valve, the inlet medium pressure through the pilot hole quickly into the main valve on the cavity in the upper cavity to form a pressure difference, so that the main valve closed.

Solenoid valve two refers to the solenoid valve spool has two different working positions (open, off). Solenoid valve two, three refers to the solenoid valve on the valve body has two, Solenoid three channel mouth; such as two-way two-way solenoid valve is one into a (two channels, the most common common) two three-way solenoid valve Control the liquid is a two into the two (two are a normally open a normally closed); pneumatic commutation solenoid valve is a one into an exhaust; hydraulic into a return oil.

Domestic and foreign solenoid valve from the principle is divided into three categories (ie: direct-acting, step-by-step direct, pilot), and from the valve structure and material on the difference between the principle and divided into six Sub - class (direct - acting diaphragm structure, step - by - step structure, Solenoid pilot - type structure, direct - acting piston structure, Solenoid step - by - step piston structure, pilot piston structure).

Principle: power, the electromagnetic coil to produce electromagnetic force to close the closure from the valve seat, the valve open; power, the electromagnetic force disappears, Solenoid the spring to close the valve on the valve seat, the valve closed.


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