Digital pilot-operated cartridge overflow valve

Abstract

The invention relates to a digital pilot-operated cartridge overflow valve. The digital pilot-operated cartridge overflow valve comprises a communication interface which is installed on a display screen, and the display screen is fixed on a controller through a slot; the controller is connected with a D / A module through the slot, and the D / A module is connected with a proportional amplifier through a wire; the amplifier is fixed on an electromagnet through an inserting row, the electromagnet directly makes contact with a pilot-operated valve element spring, and an oil blocking seal ring is installed between the amplifier and the electromagnet; the controller, the D / A module, the proportional amplifier and the electromagnet are installed on an upper sleeve, and an O-shaped ring is installed on the upper sleeve. According to the digital pilot-operated cartridge overflow valve, the overflow pressure is set through a digital keyboard to enable the set overflow to be more accurate and safer; the overflow pressure is set through remote programming, a user can adjust the overflow pressure at any time according to the actual condition where a hydraulic circuit is located, therefore, the system design and use are more flexible, and the problem that once the overflow pressure is set, discretionary adjustment can not be perform is solved.

Description

technical field [0001] The invention relates to a pressure valve, in particular to a digital pilot cartridge relief valve. Background technique [0002] As a pressure control valve in the hydraulic valve, the cartridge relief valve plays an irreplaceable role in the normal operation of the hydraulic system, and it is used in almost any hydraulic circuit. Its main function is to make the excess oil flow back to the oil tank through the overflow of the valve port, so as to control the pressure of the hydraulic system or circuit to a constant value or prevent the hydraulic system from overloading, and play the role of a pressure regulating valve and a safety valve. The traditional method of setting the pressure of the relief valve is to manually adjust the pressure regulating screw to increase or decrease the preload of the spool spring, thereby setting the relief pressure of the relief valve. The problem with this method is that due to the different experience and level of op...

AI Technical Summary

Problems solved by technology

The problem with this method is that the set pressure is not accurate due to the different experience and level of the operators, and when the overflow pressure is set, the system often needs to be loaded to a higher pressure, which makes the process of setting the pressure difficult. security risks

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