What is a solenoid valve, a reputable solenoid valve supply address.

What is the definition of solenoid valve?

A solenoid valve is an electromechanical device used to control the flow of a liquid or gas. A solenoid valve, also known as a solenid valve, is controlled by a 220V or 24V current that is operated through a coil. When the coil is energized, a magnetic field is generated, creating a force on the plunger inside the coils that will cause the plunger to move. Depending on the design of the valve, the actuating piston will either open or close the valve. When current is disconnected from the coils, the valves will return to their original state.

In direct-acting solenoid valves, the plunger directly opens and closes a hole inside the valve. In the active pilot valve (also known as servo-type), the plunger, opens and closes a pilot hole. The inletline pressure, guided through the pilot holes, opens and closes the valve seal.

The most common solenoid valve has two ports: an inlet port and an outlet port. Special, high-end designs may have three or more ports. Some designs use a multi-style design.

Solenoid valves make automation of liquid and gas control possible.

The solenoid valve will help the system operate quickly, with high reliability, long life, especially its very compact design.

Structure of solenoid valve:

Each type of electromagnetic fringe has a different design and structure, but they also have in common that they are composed of individual components and then assembled into a complete product, these components include:

• 1. Valve body: brass or stainless steel
• 2. Medium: Liquid (water, oil) or gas (compressed air, gas, etc.)
• 3. Empty tube (No fluid passed)
• 4. Inhalation coil outer shell (Electric coil protection)
• 5. Magnetic coil (Magnetic coil)
• 6. Power cord connected to an external power supply
• 7. The valve shaft is sealed (in the normal state, spring 8 will act tight, keeping the valve in a normally closed state)
• 8. Springs
• 9. The opening allows the fluid to pass through

Classification of solenoid valves:

Normally closed solenoid valve

• Is a solenoid valve that in the unpowered state, the valve will always close, when the valve needs to open, we must supply power to the valve, then the valve will generate magnetic force from the suction coil (electrical coil) and will make the valve returns to the open state, to remain open, we must also maintain the input power. When we want to close the valve, stop the power supply, the valve will automatically return to the original state of the valve (ie closed state).
• Normally closed solenoid valve is a very common valve on the market, and most people often use this valve. Because of the fact we also see that not only solenoid valves in particular but also other common mechanical valves are often in the normally closed position, usually locked, the time they stay in this state is much more than the time. they are in the open state.
• Normally open solenoid valve:
• Is a solenoid valve that in the unpowered state, the valve is always open, when it needs to be closed, we supply power to the valve, then the valve will generate a magnetic field that pushes the sealing shaft away from the sealing position. sealing position and helps the valve close.

Normally open solenoid valve is very rare on the market due to very little demand, if there is a reluctant case due to new design, it is necessary to use this normally open valve. Currently, the only company present in Vietnam with this normally open valve is the company: ODE – ITALY (This product we are the supplier).

Working principle

Because solenoid valves have many types of designs, as well as many different operating modes such as: normally closed solenoid valve, normally open solenoid valve, relay-operated valve, direct-operated valve....

Therefore, we cannot present all the operating principles of each type of solenoid valve in this article. Here we only learn about the basic operation of this type of valve.

When supplying 24v, 220v ... to the valve, the solenoid coil will generate a magnetic field to form an electromagnet, attract the magnetic core attached to the valve diaphragm, open the outlet completely, at this time the fluid flows freely. through the valve.

When the power is turned off, the magnetic field disappears and there is no longer any suction, the spring's elastic force on the head pushes the magnetic core and the valve diaphragm seals the outlet hole, preventing fluid from flowing through the valve.

Advantage

• The solenoid valve has undergone a continuous development process to improve functions. This process has resulted in a safe and efficient valve.
• A solenoid valve is an extremely versatile choice, especially in automated systems, The opening and closing times of the solenoid make it the ideal solution for many applications where speed is a factor. important factor. Here are some key advantages of solenoid valves:
• Low power consumption low
• Remote operating
• Cost savings for maintenance and servicing
• Compatible with AC and DC voltage
• Extremely fast opening and closing time
• Capable of operating in extreme temperatures
• Solenoid valve applications are extremely diverse, thanks to their versatility.

Defect

• The most obvious disadvantages of solenoid valves relate to the stability of the power supply. If the supply voltage is unstable, the magnetic field may be affected and the valve will therefore not function properly.
• Unstable voltages can also affect the solenoid coil, leading to faster failure and the need for replacement. Some of the most common disadvantages of solenoid valves are:
• Damaged solenoid coils must be checked and replaced regularly.
• The need to maintain the control signal during operation of the solenoid valve.
• Sensitive to fluctuations or changes in voltage.
• Magnetic fields can affect surrounding devices.

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As an agent in Vietnam, Jade M-Tech Co., Ltd. will always get the agency's benefits from MINDMAN, we will always update customers with the most effective policies and information.

* Currently on the market there are many different brands of pneumatic equipment, but MINDMAN is the dominant product made in Taiwan according to the most modern production technology, stable operation with durability and accuracy beyond dominant. So when there is a need for MINDMAN products, please contact our company for the best advice and quotation.