The role of solenoid valve

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Solenoid valves belong to actuators, which are the basic components of automation used to control fluids. The solenoid valve can be matched with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed. So what exactly is the function of the solenoid valve?

The role of solenoid valve

The solenoid valve is a step-by-step direct pilot solenoid valve, which can be divided into a normally closed solenoid valve and a normally open solenoid valve according to the different on and off states when the power is off. Normally closed solenoid valve, after the coil is energized, the armature first drives the auxiliary valve plug to lift up under the action of electromagnetic force, and the fluid on the main valve cup flows away through the auxiliary valve, reducing the pressure acting on the main valve cup. When the pressure on the valve cup is reduced to a certain value, the armature drives the main valve cup, and uses the pressure difference to open the main valve cup and the medium flows.After the coil is powered off, the electromagnetic force disappears, and the armature falls and resets due to its own weight.
At the same time, depending on the medium pressure, the main and auxiliary valves can be tightly closed. Normally open solenoid valve, after the coil is energized, due to the suction effect, the moving iron core moves down, the auxiliary valve plug is pressed down, the auxiliary valve is closed, and the pressure in the main valve cup rises. When the pressure rises to a certain value, the main valve cup Due to the action of electromagnetic force, the moving iron core pushes the main valve cup down, presses the main valve seat, and the valve closes. When the coil is powered off, the electromagnetic suction force is zero, the auxiliary valve plug and moving iron core are lifted up due to the action of the spring, the auxiliary valve is opened, and the fluid on the main valve cup flows away through the auxiliary valve, reducing the effect on the main valve cup. When the pressure on the main valve cup is reduced to a certain value, the main valve cup is pushed up by the pressure difference, the main valve is opened, and the medium flows.
By understanding the different classifications and working principles of solenoid valves, we can better understand the role of solenoid valves. The above content is comprehensively explained to you.

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