What is a solenoid valve and how to use a solenoid valve?

What is a solenoid valve and how to use a solenoid valve?

First of all, before introducing the selection of electromagnetic valve, we first look at what is the point power. What is the role of the solenoid valve? Let's see what is the solenoid valve.

The use and role of solenoid valve

Solenoid valves are electromagnetically controlled industrial equipment used in industrial control systems to adjust the direction, flow, speed, and other parameters of the media. The burner solenoid valve is controlled by the electromagnetic effect. The main control method is controlled by the relay. In this way, the solenoid valve can cooperate with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed.

Solenoid valve classification and control

There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The more commonly used ones are one-way valves, safety valves, direction control valves, and speed control valves. Solenoid valves are electromagnetically controlled industrial equipment. Adjust the direction, flow, speed, and other parameters of the media in an industrial control system. The solenoid valve is controlled by the electromagnetic effect. The main control method is controlled by the relay. In this way, the solenoid valve can be used with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed, there are many kinds of solenoid valves, different solenoid valves play a role in different locations of the control system, the more commonly used is single Directional valves, safety valves, directional control valves, speed control valves, etc.

The performance of the solenoid valve can be simply divided into i applicability, reliability, safety, economy, solenoid valve style can be divided into direct-acting, step-by-step direct-acting, and indirect pilot-type, to help understand these, Know how to buy a solenoid valve, how to use a solenoid valve. Below we make a simple analysis of the above points.

What is a solenoid valve and how to use a solenoid valve?

applicability?

The fluid in the pipeline must be the same as the calibration medium in the selected solenoid valve series model. The fluid temperature must be less than the calibration temperature of the selected solenoid valve. The solenoid valve fluid viscosity is generally below 20CST. If the lower pressure difference is greater than 0.04MPa, pilot type (differential pressure) electromagnetic valve can be used; the higher working pressure difference should be less than the larger calibration pressure of the electromagnetic valve. The general solenoid valve is one-way work, so pay attention to whether there is back pressure difference, if there is a check valve installed, the fluid cleanliness is not high when the filter should be installed in front of the solenoid valve, the general requirements of the solenoid valve on the media cleanliness is better , Pay attention to the flow aperture and the nozzle diameter; solenoid valve is generally only two control switch; conditions allow to install the bypass pipe, easy maintenance; water hammer to customize the solenoid valve opening and closing time adjustment, pay attention to the ambient temperature of the solenoid valve Impact, power supply current and power consumption should be selected based on the output capacity. The power supply voltage is generally allowed to be ±10%. It must be noted that the VA value at the time of AC start is higher.

reliability

Solenoid valve is divided into two types: normally closed and normally open; Normally selected is normally closed type, but normally open type is used when the open time is very long and closed. The life test is generally belonged to the factory. Type test projects, to be exact, there are no professional standards for solenoid valves in the country, so use caution when selecting solenoid valve manufacturers.

When the operation time is very short, the direct-acting type is generally selected and the large-caliber selection is used for the fast series.

safety

General electromagnetic valve is not waterproof, please use waterproof type when the conditions are not allowed, the factory can be customized, the higher nominal pressure of the solenoid valve must exceed the higher pressure in the pipeline, otherwise the service life will be shortened or have other unexpected circumstances, Corrosive liquids should be made of all-stainless steel, and strong corrosive fluids should use plastic king (SLF) solenoid valves. Explosion-proof products must be selected for the destructive environment of the Biohit burner.