Two-position two-way solenoid valve structure principle and installation

The two-position two-way solenoid valve is a direct pilot solenoid valve with a step-by-step action. It can be divided into a normally closed solenoid valve and a normally open solenoid valve according to the different open and closed states when the power is off. Normally closed solenoid valve. After the coil is energized, the armature first drives the valve plug of the auxiliary valve to lift under the electromagnetic force, and the fluid on the main valve cup of the steam solenoid valve flows away through the auxiliary valve, reducing the pressure on the main valve cup When the pressure on the main 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 is reset due to its own weight. At the same time, depending on the medium pressure, the main and auxiliary valves can be closed tightly. Normally open solenoid valve. After the coil is energized, the moving iron core moves down due to the suction force. The valve plug of the auxiliary valve 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 The upper and lower pressure difference is the same. Due to the electromagnetic force, the moving iron core pushes the main valve cup down, compresses the main valve seat, and closes the valve. When the coil is de-energized, 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 opens, 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 opens, and the medium flows.

Installation and use of two-position two-way solenoid valve

    1. The valve should be installed vertically in a place where the ambient temperature is -20℃~ -60℃ and the relative humidity is 5-95%.

　　2. The valve shall not be installed in a place where water drips or splashes.

　　 3. When installing, pay attention to the arrow of the medium flow direction, and the inlet and outlet cannot be reversed.

　　4. The pipeline should be thoroughly cleaned before installation. Valve actuator_In order to prevent impurities in the pipeline system from flowing into the solenoid valve, a filter must be installed in front of the valve, otherwise it is easy to block the small hole gap and cause the switch to fail.

　　5. The valve can be guaranteed to work normally at the rated voltage of -15% ~ -10%.

　　 6. When the solenoid valve is unloaded from the pipeline, the medium remaining in the valve should be blown dry, and then stored according to the aforementioned storage conditions. The stainless steel solenoid valve has a wide range of general media, which can be used for water, light oil, heavy oil, non-corrosive gas, steam and other fluids.

　　For example, in the drainage system of the exhaust pipe of the power station and the exhaust system of the evaporator, the electric actuator is mainly used for two-position automatic adjustment and remote control of the medium in the pipe. ZCLI-10~100, the high-pressure solenoid valve is an automatic valve designed and manufactured by our company. The product has a reasonable structure, sensitive action and reliable performance. It can be used for clean liquids, gases, and water, gas, and oil with a viscosity not greater than 28cst. In the pipeline.

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