Solenoid valve assembly 211-2092 Solenoid valve hydraulic valve

What is the difference between proportional valve and ordinary solenoid valve?

    Proportional valve is a new type of hydraulic control device. In the ordinary pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control part, according to the input electricity
The gas signal continuously and proportionally controls the pressure, flow, or direction of the oil stream remotely. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can be unaffected by load changes

1, the ordinary valve is not proportional to the continuous step control, is a pure single action type switch valve, the valve opening direction, opening amount or spring setting force is certain
Cannot be changed according to actual circumstances.

2, proportional valve is proportional to the continuous step control, according to the actual situation changes in the information collected to the target automatic compensation control, the valve opening direction, opening amount or the spring set force is followed, to achieve a series of continuous controlled changes in the movement. Valve control of flow can be divided into two kinds: one is switch control: either fully open, or fully closed, flow is either, or small, no intermediate state, such as ordinary electromagnetic through valve, electromagnetic reversing valve, electro-hydraulic reversing valve. The other is continuous control: the valve port can be opened according to the need of any degree of opening, thereby controlling the size of the flow through, such valves have manual control, such as throttle valves, but also electronically controlled, such as proportional valves, servo valves.

Proportional solenoid valve

How it works:

All solenoid valve components are an electromagnetic coil in terms of the electrical part, that is, an inductor. When the inductor is given an electrical signal, the electromagnetic field generated by the current will make the valve core move and realize the change of the controlled parameters.
Quality identification:
Each electromagnetic coil has a fixed resistance value R, but this R cannot be "0" or "∞", when R= "0" indicates the internal short circuit: when R= "∞" indicates the internal open circuit; with
The resistance of the coil to the housing cannot be "0". If the above conditions can be met and the solenoid valve does not work, it may be that the signal input is wrong or the valve core is stuck.