1、 Electromechanical conversion

• Proportional electromagnetThe core driving component of the proportional multi way valve is the proportional electromagnet, which consists of a coil, an armature, and a magnetic conductor. When a current is applied to the coil, an electromagnetic force proportional to the magnitude of the current is generated.
• Force current relationshipThe larger the input electrical signal (such as 0~10V voltage or 4~20mA current), the stronger the electromagnetic force, and the greater the distance that pushes the armature and connected valve core to move. The position of the valve core is proportional to the input current.

2、 Valve core displacement control

• Electromagnetic force propulsionElectromagnetic force pushes the valve core to overcome spring force or other resistance and move, changing the flow area of the throttle port inside the valve body.
• Change in throttle openingThe displacement of the valve core changes the flow area of the throttle port, thereby regulating the flow rate or pressure of the fluid. For example, a proportional pressure valve changes the pressure setting value by adjusting the position of the valve core.

3、 Pressure compensation and load sensitivity (optional function)

• Pressure compensation valveDesign a pressure compensation valve after the main valve. When the load of each actuator is different, the pressure difference of each main valve remains constant, ensuring that the flow distribution of each valve is independent of the load and only proportional to the size of the main valve opening.
• Load sensitive technologyLoad sensitive control matches the system pressure with the maximum load pressure, reducing energy loss caused by throttling. The Load Independent Traffic Distribution (LUDV) technology solves the disadvantage of load sensitive control lacking anti saturation capability, ensuring the stability of traffic distribution when multiple actuators act simultaneously.

4、 Closed loop feedback (optional)

• Sensor integrationTo improve control accuracy, some proportional multi way valves integrate sensors (such as displacement sensors or pressure sensors) to form closed-loop control.
• Signal feedback and adjustmentCompare the detection signal with the set value, adjust the input current through a controller (such as PID), eliminate errors, and ensure precise control.

5、 Multi channel control implementation

• Proportional control of multi way directional valveThe pilot valve receives analog or digital signals to control the pressure and flow rate of the outlet oil, driving the main valve core to move proportionally with the input quantity, or directly driving the main valve core by the driving device to change the cross-sectional area of the throttle port, thereby controlling the flow rate of the working oil of the multi way valve.
• Electro hydraulic proportional multi way valveThe driving components usually use proportional electromagnets, voice coil motors, etc. Taking proportional solenoid drive as an example, the pilot valve core moves in proportion to the input current signal under the push of the solenoid, and the pilot valve outputs pressure oil with a corresponding proportional flow rate to the working chamber of the control hydraulic cylinder, which drives the main valve core to move and achieve the direction change of the main valve.