The principle of the relief valve:
When the relief valve works, it uses the pressure of the spring to adjust and control the pressure of the hydraulic oil. When the pressure of the hydraulic oil is less than the required working pressure, the valve core is pressed against the inlet of the hydraulic oil by the spring. When the pressure of the hydraulic oil exceeds the allowable working pressure, that is, greater than the spring pressure, the valve core is lifted up by the hydraulic oil, and the hydraulic oil flows in. , flows out from the right port and returns to the fuel tank. The greater the pressure of the hydraulic oil, the higher the valve core is lifted by the hydraulic oil, and the greater the flow of hydraulic oil back to the tank through the relief valve. If the pressure of the hydraulic oil is less than or equal to the spring pressure, the valve core will fall and seal. Live hydraulic oil import.
The relief valve is a hydraulic pressure control valve that mainly plays the role of constant pressure overflow, pressure stabilization, system unloading and safety protection in hydraulic equipment.