Main performance requirements of VICKERS electromagnetic directional valve

Main performance requirements of VICKERS electromagnetic directional valve

1. Under specified working conditions, can the solenoid valve reliably reverse direction when powered on and reset reliably when powered off.

2. The pressure loss of the electromagnetic directional valve is composed of the flow loss and throttling loss generated when the liquid flows through the valve port of the electromagnetic directional valve.

3. The internal leakage of an electromagnetic directional valve refers to the leakage from the high-pressure chamber to the low-pressure chamber at different working positions under specified working conditions.

4. Reversing and resetting time refers to the time required from the electromagnetic iron being energized to the termination of the valve core reversing, while resetting time refers to the time required from the electromagnetic power-off to the valve core returning to its initial position.

5. The maximum number of allowed commutation times per unit time for commutation frequency

6. Service life: When the main components of the solenoid valve are damaged, it cannot perform normal directional and reset actions, or when its main performance indicators deteriorate significantly beyond the specified number of directional changes experienced. There are many varieties of electromagnetic directional valves, which can be divided into two position three-way, two position four-way, three position four-way, etc. according to the number of working positions and passages; According to their reset and positioning forms, they can be divided into spring reset type, steel ball positioning type, and non reset spring type; According to the connection form between the valve body and the electromagnet, it can be divided into flange connection and threaded connection; According to the structural form of the magnet it distributes, it can be divided into dry and wet types, each of which has AC, DC, local integration and other forms, and there are many different power supply voltages required, so there are many differences in its structure.

Vickers directional control valve is a directional control valve with two or more flow forms and two or more oil ports. It is a valve that enables communication, cutting off, and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control.

Introduction

It can be divided into manual directional valve, electromagnetic directional valve, electro-hydraulic directional valve, etc.

Also known as Chris valve, a type of valve with multi-directional adjustable channels that can change fluid flow direction in a timely manner.

When working, the drive shaft is rotated by the drive transmission mechanism outside the valve, with a shaking crank arm, to activate the valve plate, so that the working fluid sometimes flows from the left inlet to the lower outlet of the valve, and sometimes changes from the right inlet to the lower outlet, achieving the purpose of periodic flow direction change.

This Vickers shift valve has a wide range of applications in petroleum and chemical production, and is most commonly used in synthetic ammonia gasification systems. In addition, directional valves can also be designed as valve disc structures, which are commonly used in situations with lower flow rates. When working, simply rotate the handwheel to change the flow direction of the working fluid through the valve disc.

Classification of Vickers directional valves

(1) Mobile directional valve, also known as travel valve.

*Wiggs directional valve in stock in Zhengzhou banshichu

(2) Electromagnetic directional valve is a directional control valve that uses electromagnetic attraction to manipulate the valve core to change position.

(3) Electro hydraulic directional valve is a composite valve composed of electromagnetic directional valve and hydraulic directional valve.

(4) Manual directional valve, which is a directional control valve that uses a manual lever to manipulate the valve core to change position.

Advantages of Vickers directional valve

Accurate movements, high degree of automation, stable and reliable operation, but require the installation of drive and cooling systems, and the structure is relatively complex; The valve disc structure is relatively simple and is often used in production processes with low flow rates.

In industries such as petroleum, chemical, mining, and metallurgy, Vickers directional valve is an important fluid directional device. This valve is installed in the pipeline that transports lubricating oil in the thin oil lubrication system. By changing the relative position of the sealing components in the valve body, the various channels of the valve body can be connected or disconnected, thereby controlling the direction change and start stop of the fluid.

Hydraulic directional valves are divided into two ways, three ways, four ways, and five ways according to the number of passages controlled by the directional valve. The movement of the valve core and valve body can cause the oil circuit to flow, close, or change the direction of oil flow, thereby enabling the hydraulic actuator and its driving mechanism to move, end, or change the direction of motion.

Electromagnetic search directional valve uses an electromagnet to push the valve core to control the direction of fluid flow. The use of electromagnetic directional valves can make the operation lightweight and easy to achieve automated operation, so it is widely used. The electromagnetic directional valve only uses an electromagnet to control the movement of the spool valve, and the structure and type of the spool valve can be various, so the electromagnetic spool valve can be in various types such as two position two-way, two position three-way, two position four-way, three position four-way, and three position five way. Generally, a two position valve requires one electromagnet, while a three position valve requires two electromagnets. .

Main performance requirements of VICKERS electromagnetic directional valve