Structural principle of cartridge valve

Structural Principle

The cartridge valve is composed of a control cover plate, a cartridge unit (composed of valve sleeve, spring, valve core, and sealing components), a cartridge block body, and a pilot element (placed on the control cover plate). Due to the main control function of the plug-in unit of this valve in the circuit, it is also known as a two-way plug-in valve. The control cover plate encapsulates the insertion unit inside the insertion block and communicates with the pilot valve and the insertion unit (also known as the main valve). The opening and closing of the main valve core can control the opening and closing of the main oil circuit. By using different pilot valves, pressure control, directional control, or flow control can be formed, and composite control can be formed. Assemble several two way cartridge valves with different control functions into one or more cartridge blocks to form a hydraulic circuit.

 

Working Principle

When the driving mechanism of the cartridge valve is activated, the size of its internal opening can be changed, thereby changing the flow rate, pressure, and direction of the fluid. The plug-in valve adopts linear adjustment technology, which transforms the relationship between pressure and flow into a linear relationship. In general, the greater the pressure of the cartridge valve, the greater the flow rate, and vice versa.