4we solenoid valve model description, 4we solenoid valve working principle

4we solenoid valve Model Description

Thesolenoid valve passes The electromagnetic force drives the movement of the valve core to realize the opening, closing and direction switching of the oil circuit. It can be directly used in the direction control of the hydraulic system, and can also be used as a pilot valve to drive and control other valves with high pressure and large flow. It is not necessary to disassemble the pressure oil chamber of the valve body to replace the electromagnet. In an emergency, an implicit manual emergency device can be used to push the valve core.

4we solenoid valve working principle description< /span>

In the cross-sectional view of Figure 3, the electromagnetic force generated after electromagnet "a" or "b" is energized The force pushes the spool (2) to move to the right or left in the valve body (1) through the push rod (4), thereby allowing free flow from P to B, A to T or P to A, B to T.

When the electromagnet loses power, the valve core has three Type of reset, spring return type: the valve core is pushed back to the neutral position by the return spring (3);spring-free return type: the valve core has no exact position after power loss;positioning mechanism type: after power loss, the valve core can remain in any position One position.

Spring return type (model: 4WE.../...)

For the electromagnetic reversing valve with this reset method, when the electromagnet is energized, the electromagnetic force overcomes the spring force to push the valve core;after the electromagnet is deenergized, the valve core is pushed by the spring It is restored and maintained at one end of the valve body (two-position valve) or the middle position (three-position valve) under the action of force.

No spring return type (model: 4WE.../O...)

For this kind of electromagnetic reversing valve, when the electromagnet is energized, the electromagnetic force directly pushes the valve core to the required position;after the electromagnet is powered off, the valve core is not determined. stop location.

Positioning mechanism type (model: 4WE.../OF...)

For this type of electromagnetic reversing valve, when the electromagnet is energized, the electromagnetic force directly pushes the valve core to the required position, and then the positioning steel ball slides into the groove of the valve core. , at this time, the electromagnet no longer needs to be energized, and is maintained by the positioning steel ballSolenoid valveThe position of the valve core.

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