Totally-enclosed fluid switch

Abstract

A totally enclosed fluid switch creatively uses a handle, a rotary sleeve, a main shaft with an oblate upper part and a round lower part, a telescope tube, an external bushing of round hole, an external bushing of oblate hole and a combination of an upper end valve plate and a coupling valve plate of lower end (see the attached figure for combination). When the handle rotates left and right, the upper end valve plate is driven to move up and down to realize the switch function. Except a fluid entrance and a fluid exit of the totally enclosed fluid switch, the fluid inside the invention is totally separated from the outside. Because the totally enclosed fluid switch adopts the telescope tube to replace a seal ring for seal and the vertical movement of the upper end valve plate replaces the rotary movement of the valve plate, and besides, the coupling valve plate of lower end and the upper end valve plate form a switch valve plate by the coupling combination, the totally enclosed fluid switch has the advantages of simple structure, easy production, strong leak tightness and low cost, being suitable for the switches taking water, gas and oil as the medium. The service life of the totally enclosed fluid switch is almost not restricted by the using times and is only relevant to the natural service life of the used material.

Description

1. Technical field [0001] The invention relates to the field of switches with fluid as the medium, mainly including switches used in the mining, processing, transportation, storage and sales of fluid materials such as water, gas and oil. 2. Background technology [0002] At present, most of the fluid switches used in the society have a short service life, ranging from several months to several years, but generally speaking, their service life is much lower than the natural life of the fluid switch materials produced by them in the use environment ( The life of the material with the shortest natural life in this use environment) brings a lot of waste of resources to the society, and at the same time brings a lot of inconvenience to people's use and maintenance. [0003] In order to improve the service life of fluid switches, people are competing to use high-tech materials, which makes the cost of fluid switches continue to rise, increases people's production and living costs,...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the fluid switches used in the society have a short service life, ranging from several months to several years, but generally speaking, their service life is much lower than the natural life of the fluid switch materials produced by them in the use environment ( The life of the material with the shortest natural life in this use environment) brings a lot of waste of resources to the society, and at the same time brings a lot of inconvenience to people's use and maintenance

[0003] In order to improve the service life of fluid switches, people are competing to use high-tech materials, which makes the cost of fluid switches continue to rise, increases people's production and living costs, and thus affects people's production and quality of life to a certain extent

[0004] There are two main reasons for the short service life of the fluid used in the society at present: first, the sealing problem under the fluid switch handle; second, the friction damage problem of the valve plate

[0005] The first reason: the sealing problem under the handle of the fluid switch. Most of the current fluid switches are sealed by the sealing ring to solve the relationship between sealing and movement. The sealing performance continues to decline, causing the fluid in the fluid switch to flow out from the bottom of the handle, causing corrosion to other components, and finally making the function of the fluid switch completely lost. For example, ordinary faucets and air valve switches on the market currently have this type of situation

Theoretically speaking, there are always gaps in the sealing ring. As long as the number of times of use increases and the use time is prolonged, it will eventually cause fluid leakage, but generally speaking, its service time is much shorter than that of its production sealing ring material in this use environment. natural life

[0006] The second reason: the frictional damage of the valve plate. At present, most valves that use the valve plate as the switch valve use a hard-soft coupling to realize the switching function. At the same time, the soft valve plate and its hard coupling surface are rotated due to the rotation Serious frictional damage occurs, which greatly shortens the service life of the valve plate, thus shortening the service life of the fluid switch. Generally speaking, the natural life of the materials used to produce the valve plate in this environment is much longer than that of the fluid switch. service life,

[0007] In order to solve the above two problems, manufacturers of fluid switches in various countries have changed the structure of fluid switches, improved the machining accuracy of fluid switches, or used new materials to solve them, such as ball valve switches and piston switches. The seal under the handle has not been solved, but the service life of the switch is extended by improving the machining accuracy

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