2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
The solenoid valve is an electromechanical device that is controlled by electric current. The latter passes through an electromagnet (a coil wound around the core), as a result of which a magnetic field is formed. By its action, it can open and - vice versa - close the solenoid valve.
In general, this mechanism is used to regulate the flow of liquids and gases. Most often it is used in the agricultural sector (irrigation systems) and for industrial purposes. It is also indispensable in cars.
The design of this mechanism includes the following parts:
- Solenoid coil.
- Pilot hole.
- Solenoid valve poppet.
- Closing spring.
- Valve coil anchor.
- Main flow port.
- Membrane amplifier diaphragm.
- Alignment flow port mechanism.
- Forced valve opening system thatactuated by means of a spring.
Solenoid valve of the 2109th VAZ and its principle of operation
In this mechanism, a certain mechanical force is generated, created by an electromagnetic coil (it converts electricity into magnetic field energy.) As a result, the electromagnetic valve changes its position - it can close and open. At the inlet, this part has an inlet pipe through which gas or liquid passes into the mechanism.
The VAZ solenoid valve includes a rubber (rarely plastic) membrane. It is pressed into the intake pipe and can regulate the flow of incoming fluid. Its front side consists of a sealing ring, which at the right time prevents the flow from entering the mechanism. The membrane is most often mounted on metal springs fixed on the back of the valve.
The position of this mechanism depends on the metal rod, which is placed under the coil. When the latter is excited, the rod moves away under the influence of a magnetic field, and at this time the sealing ring moves away from the membrane. Thus, the flow of gas or liquid passes into the solenoid valve. When the coil is disengaged, the diaphragm is spring-loaded against the inlet sealing surface.
Valve pressure
This part, unlike conventional pumps that perform a similar function, does not have any mechanical devices through which the gas flow passes into the system. That is why it is so importantobserve the pressure difference between the inlet and outlet inlet of the valve. In order for the liquid to pass through the solenoid valve, a higher pressure must be formed in the inlet pipeline than in the outlet.
If this value is the same at both ends of the mechanism, the thread will no longer pass to the working environment. Most modern valves have this principle of operation, except for direct-acting devices (they can transfer gas and liquid regardless of the pressure in the pipelines).
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