Excavator solenoid valve 207-6806 Hydraulic pump proportional solenoid valve 950G 962G 966G

Typical applications of proportional solenoid valves

Flow control valve is a proportional solenoid valve, through the control of proportional electromagnetic
The flow of the valve can be controlled in a variety of ways, that is, flow control
The valve can not only control the flow rate, but also control the pressure, temperature, etc
Examples of typical applications of solenoid valves are as follows.
Control actuator (static pressure control)
Two proportional solenoid valves are controlled for pneumatic drives (piston valves, cylinders
Etc.) the air. The PID controller determines which ratio of power must be turned on
A magnetic valve. The controller sets the drive signal through the proportional solenoid valve, thus
Make the process value agree with the given set value.

  Proportional pressure valve analysis and elimination because the proportional pressure valve is just on the basis of the ordinary pressure valve, the regulator handle is replaced by a proportional electromagnet.

     Therefore, the various faults caused by the ordinary pressure valve, which will also produce the ordinary pressure valve fault causes and elimination methods are also fully applicable to the corresponding proportional pressure valve (such as the overflow female corresponding proportional relief valve), can be referred to for processing.  

The working process of the proportional solenoid valve can be summarized as four steps.

First, the power supply is always stable, and then the proportional control signal is obtained from the controller and transmitted to the proportional solenoid valve;

Second, the proportional control signal is converted into electromagnetic force excitation, thereby controlling the rotation of the valve;

Third, according to the rotation of the valve to control the opening degree of the valve, and then feedback to the controller;

Fourth, according to the feedback signal to adjust the valve spring, so as to achieve accurate control of the valve opening degree.

The control principle of the proportional solenoid valve has three main aspects:

First, the fluctuation of the electrical signal affects the opening degree of the valve;

Third is to control the opening degree of the valve according to the rotation of the valve, and then pass the feedback signal loop to the flow controller to achieve the control of the flow.