Large-port-diameter multi-stage pilot high-pressure solenoid valve

Abstract

The invention discloses a large-port-diameter multi-stage pilot high-pressure solenoid valve, and relates to the technical field of solenoid valves. The large-port-diameter multi-stage pilot high-pressure solenoid valve comprises a valve body, a main valve port, a piston guide sleeve, a piston component, a large valve deck and a multi-stage pilot solenoid component, wherein the main valve port is arranged in a water outlet of the valve body; the piston guide sleeve is arranged in the cavity of the valve body; the piston component is arranged in the piston guide sleeve, and is located on the upper part of the main valve port; the large valve deck is fixed on the top of the valve body; the multi-stage pilot solenoid component is arranged on the upper end of the large valve deck; the multi-stage pilot solenoid component comprises a secondary pilot component and a solenoid pilot component; and a large balance hole is formed in the large valve deck, so that the inner cavity of the piston component communicates with the multi-stage pilot solenoid component through the large balance hole, and the secondary pilot component communicates with the solenoid pilot component through balance holes. According to the large-port-diameter multi-stage pilot high-pressure solenoid valve provided by the invention, a mode of opening the valve for multiple times and decompressing for multiple times is adopted, so that port of the main valve is opened, and the aim of opening the large-port-diameter solenoid valve by utilizing a miniature coil is well realized.

Description

technical field [0001] The invention relates to the technical field of solenoid valves, in particular to a large-diameter multi-stage pilot type high-pressure solenoid valve. Background technique [0002] The solenoid valve is an executive element in the automatic control system, which is used to control the opening and closing of the fluid and change the direction of the fluid. The prior art solenoid valve structure is nothing but several ways, direct-acting type, pilot-operating type, step-by-step direct-acting type, especially in the case of large caliber, the solenoid valve often needs a large torque to open the solenoid valve. The designer made the power of the solenoid coil very large, and at the same time the volume of the coil should be increased to meet the requirements of opening the solenoid valve. [0003] The large-diameter solenoid valve in the prior art often has a low working pressure. Because of the large diameter, the direct-acting structure cannot meet th...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and to provide a large-diameter multi-stage pilot-operated high-pressure solenoid valve, which solves the problem of high power of the large-diameter solenoid valve and overcomes the difficulty of opening the large-diameter solenoid valve by using a miniature coil. Technical problems of solenoid valve

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