The specific process by which the proportional valve control mode achieves a controllable pressure relief speed mainly relies on the basic principles of electro-hydraulic proportional control. The specific implementation steps are as follows:

Signal input based on preset programs: First, the system sets the required pressure relief curve through a program. The control system (such as a CNC machine tool) provides the corresponding electrical input signal (usually a voltage or current signal, such as ±10V) based on this program.

Signal amplification and thrust conversion: After the electronic amplifier receives the input signal, it converts it into an appropriate drive current and sends it to the proportional electromagnet inside the proportional valve. The proportional electromagnet converts the input current into a mechanical thrust acting on the valve spool.

Dynamic regulation of flow and pressure: With the precise change in the displacement of the valve spool, the proportional valve can proportionally regulate the flow and pressure within the system. During the pressure relief process, the pressure sensor on the main pipeline can also convert the real-time high-pressure signal into a current signal and feed it back to the control circuit, achieving dynamic closed-loop control of the pressure by controlling the overflow rate of the proportional relief valve.

In summary, the proportional valve mode converts the set program instructions into electrical signals, continuously adjusts the electromagnet thrust and valve spool displacement proportionally, and ultimately achieves dynamic regulation of the pressure relief action and overflow rate, thereby making the full-process pressure relief speed precisely controllable.