Three-position three-way hydraulic change valve

Abstract

Three-position three-way water hydraulic reversing valve, which belongs to the valve category, is used for directional control components in hydraulic systems. It is used for dirty water with a lot of solid impurities, to achieve strict non-leakage sealing, and to avoid expensive ceramic materials and precision machining methods. There is no need to filter and prolong the service life. The invention is composed of two inverted cone valves with the same structure symmetrically connected, each including a valve body with an inverted cone valve seat, a valve core, a rubber diaphragm, a cylinder piston, a cylinder piston guide sleeve, a return spring and an end cover. The rubber diaphragm separates the space in the valve body into a working chamber and a cylinder chamber. The valve body where the working chamber is located has a working external interface, and an electromagnetic pilot valve is installed on the valve body; the rubber diaphragm isolates the working main flow channel from the cylinder chamber. To avoid severe corrosion and abrasive wear of the working parts in the cylinder chamber, the use of inverted cone valves can achieve reliable leak-free sealing, which is not sensitive to medium pollution, does not need to use expensive ceramic materials or valve sleeves, and does not require precision machining, reliable work and long life. Long, suitable for seawater, freshwater and high water base low viscosity media.

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,...

AI Technical Summary

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

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