The solenoid valve is an automated basic element used to control the direction of the fluid, which is a actuator; the solenoid valve is usually used for mechanical control and industrial valve to control the direction of the medium to achieve control of the valve switch.
Electromagnetic valve model
The electromagnetic valve model I. The O -type symbol is where P represents the oil inlet, T represents the oil return port, and A and B represent the working oil port.Structural characteristics: In the median, the oil port is fully closed and the oil does not circulate.Functional characteristics: 1. The entry and oil return port of the work device can be closed. The working institution can be fixed at any static movement. Even if there is an external force, it cannot move or rotate the working institution, so it cannot be used for institutions with hand -shaking.2. From stopping to startup, it is relatively stable, because the working agency is full of oil in the oil cavity, which can play a buffer effect. When the pressure oil is promoting the work mechanism to start exercising, it will not make it too fast due to the influence of oil resistance.The inertia of movement during movement causes a large hydraulic impact.3. The oil pump cannot be uninstalled.4. High direction accuracy.
Direct electromagnetic valve
I. Direct electromagnetic valve: 1. Principle: When powering, the electromagnetic force is generated by the electromagnetic coil to lift the closure piece from the valve seat, and the valve is turned on; when the power is disconnected, the electromagnetic force disappears, and the spring is pressed on the valve seat.The valve is closed.2. Features: It can work normally when vacuum, negative pressure, and zero pressure, but the diameter generally does not exceed 25mm.
I. ASCO solenoid valve selection sample 1. ASCO direct solenoid valve is generally single -electrocomposed (ie single coil), and the two five -pass solenoid valves are generally dual -electronically controlled (that is, dual coils).The coil voltage level generally uses DC24V, AC220V, etc.The two three -way solenoid valves are divided into two types: normally closed and normal open types. When the normally closed finger coil is not powered on, the air path is broken.The principle of the action of the two -bit three -bit three -bite solenoid valve: power the coil, connect the air path, and once the coil is turned off, the air path will be disconnected, which is equivalent to "dynamic movement".
Solenoid valve symbol
I. Explanation of the solenoid valve symbol 1. Direct movement: two two -way two -way, two three links, and two three -way three -way interruptions.2. Pilot type: two two -way two -pass, two three -way three links, and two three -way three -way interruptions.3. Two five -way single power control, two five -way dual -electrical control.4. The three five -way five -way seal, the three five -links were leaked, and the three were pressed in the middle.
Performance of the solenoid valve
The solenoid valve is a basic element used to control the fluid. The working principle of the solenoid valve is divided into the working principle of ordinary solenoid valve, the working principle of the direct -motion solenoid valve, the principle of distributed direct -motion solenoid valve, and the working principle of the pilot solenoid valve.1. The working principle of the solenoid valve has a closed cavity in the solenoid valve. There is a hole in different locations. Each hole leads to different oil pipes. The middle of the cavity is a valve. On both sides, there are two electromagnets.The coil power vehicle body will be attracted to where to live or leak different oil discharge holes by controlling the movement of the valve body, and the oil inlet hole is often opened, and the hydraulic oil will enter different oil exhaust pipes. ThenThrough the pressure of oil to promote the piston of oil, the piston drives the piston rod, and the piston rod drives mechanical device movements.In this way, the mechanical movement is controlled by controlling the current of the electromagnet.

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