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Three-position three-way hydraulic change valve

A three-position three-way, water-hydraulic technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., to achieve reliable and leak-free sealing, reduced component costs, and flexible spool movements

Inactive Publication Date: 2003-08-06
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] The three-position three-way water hydraulic reversing valve of the present invention solves the problem of being used for dirty water containing a lot of solid impurities, realizes strict sealing, and does not need to use expensive ceramic materials and precise processing methods, nor does it require precise filtration, and prolongs the life of the valve. The problem of service life

Method used

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  • Three-position three-way hydraulic change valve
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  • Three-position three-way hydraulic change valve

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Embodiment Construction

[0024] refer to Figure 1 ~ Figure 4 , the three-position three-way water hydraulic reversing valve that the present invention refers to is formed by the docking of left and right two substantially identical inverted cone valves.

[0025] The right inverted cone valve is composed of electromagnetic pilot valve 1, handle 6, cylinder piston guide sleeve 9, handle rod 11, cylinder piston 14, end cover 16, valve body 18 with inverted cone valve seat 4 and cylinder chamber 20, reset Spring 21, corrugated rubber diaphragm 23, spool 24 with tapered gasket 5, water pressure inlet port (P port) 55, water pressure outlet port (A port), air source inlet port 57 constitute. The cylinder piston guide sleeve 9 is installed in the valve body 18 by the screw 22, and guides the movement of the cylinder piston 14; the cylinder piston 14 and the cylinder piston return spring 21 are installed in the cylinder cavity 20, and the Y-shaped sealing ring 17 is installed on the cylinder piston 14; The ...

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Abstract

The three-position three-way water hydraulic reversal valve as directional control element of hydraulic system is formed from two symmetrically-connected inverted mouth cone valves with identical structure, each of them includes valve body with inverted mouth cone valve seat, value core, rubber diaphragm, cylinder piston, cylinder piston guide sleeve, reset spring and end cover. The rubber diaphragm can separate the internal space of the valve body into working cavity and cylinder cavity, the valve body as working cavity is equipped with external-connected working interface, an electromagnetic pilot is mounted on the valve body, and said rubber diaphragm can isolate the working main flow channel from cylinder cavity, so that it can prevent the working component in the cylinder from being corroded and worn.

Description

technical field [0001] The invention belongs to the category of valves, and is a hydraulic system direction control element suitable for using water-based liquid (including low-viscosity liquid such as natural seawater, fresh water, and high-water-based liquid) as a working medium. Background technique [0002] The water hydraulic transmission technology that directly uses natural seawater or fresh water as the hydraulic working medium has the characteristics of safety, compatibility with the environment, compatibility with products, system simplification, energy saving, economy, sanitation, etc., and can satisfy people's needs for safety, economy and The desire for environmental protection and other aspects meets the needs of sustainable development of human beings, and has become a frontier topic in the field of international hydraulic technology today, with extremely broad application prospects. Developed countries including the United States, the United Kingdom, Germany,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/044
Inventor 杨曙东彭建薛红军
Owner HUAZHONG UNIV OF SCI & TECH
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