What is the difference between a proportional solenoid valve and a general solenoid valve?

Proportional solenoid valveis a new type of hydraulic control device. In ordinary pressure valves, flow valves and directional valves, proportional electromagnets are used to replace the original control parts, and the pressure, flow or direction of the oil flow can be continuously and proportionally controlled remotely according to the input electrical signal. Proportional solenoid valves generally have pressure compensation performance, and the output pressure and flow rate are not affected by load changes.

1. General< span style="font-size: 16px;color: rgb(0, 32, 96);">Solenoid valve cannot perform proportional continuous step control. It is a pure single-action on-off valve. Its valve opening direction, opening amount or spring setting force are all fixed and cannot be changed according to the actual situation.

2. The proportional solenoid valve performs continuous step control in proportion, and performs automatic compensation control on the target based on the information collected from changes in actual conditions. The valve opening direction, opening amount or spring setting force are all It is follow-up, realizing a series of continuous and controllable follow-up and changing actions.

The flow control of the valve can be divided into two types: one is switch control: either fully open or fully closed, the flow is either small or small, and there is no intermediate state, such as ordinary electromagnetic straight-way valve, Electromagnetic directional valve, electro-hydraulic directional valve.

The other is continuous control: the valve port can be opened to any opening as needed, thereby controlling the flow rate. This type of valve is manually controlled, such as a throttle valve, and is also electronically controlled. , such as proportional valves and servo valves.

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