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Miniature passive bidirectional vacuum valve

A vacuum valve and miniature technology, applied in packaging, valve details, valve device and other directions under vacuum/special atmosphere, it can solve the problems of poor sealing performance of the valve itself, and achieve the effect of easy cleaning, simple decomposition and reduced volume

Inactive Publication Date: 2009-02-04
刘永杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-sealing performance of the valve is also very poor
Therefore, there is no real vacuum preservation box with a gauge pressure of minus 0.1Mpa so far.

Method used

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Embodiment Construction

[0027] The structure of the present invention will be further described below in conjunction with the accompanying drawings. Such as Figures 1 to 4 As shown, the valve removes the exposed handle, which fundamentally eliminates the problem of air leakage in the handle shaft bypass. It is characterized by small size, no power supply, and when the valve is opened, the gas between the airtight container and the atmosphere is bidirectional, which has no impact or loss on the limited vacuum degree of the vacuum pump. Due to the long-lasting sealing and no bypass leakage during vacuum pumping, it is called a miniature passive two-way vacuum valve.

[0028] It mainly consists of a valve body, a piston (113), a two-way locking mechanism and a key. Piston (113), two-way locking mechanism and key are connected sequentially inside the valve body. Piston (113) is elastic, made of silica gel or oil-resistant and temperature-resistant rubber.

[0029] The piston rod can be single or com...

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Abstract

A micro-passive bidirectional vacuum valve arranged on a vacuum container is suitable for being arranged on a frequently used vacuum container with a small size under the environment without a power in particular. A piston, a piston rod, a bidirectional locking mechanism and a key are connected inside a valve body in turn. One end of the piston rod comprises the bidirectional locking mechanism. One end of the key is contacted and connected with the bidirectional locking mechanism in the valve body; the other end is a spherical body which is inserted in a soft vacuum connection pipe outside the valve body in dynamic fit. The valve is opened and closed by the key by being isolated from the wall of the pipe. The side of the valve is equal to or less than Phi 8mmX4cm; the seal is long; the service life is long; the micro-passive bidirectional vacuum valve is simply and conveniently used and is suitable for various vacuum flat solar heat collector, indoor and outdoor vacuum heat preservation conduit pipes, vacuum preservation and conveying containers for fruits and vegetables. The vacuum preservation containers the surface pressure of which can achieve 0.1MPa below zero have the foundation for existence as the matching of the valve and the convenient passive vacuum valve, thus leading the areas without a power to be capable of using economic and practical ''fridges''.

Description

(1) Technical field [0001] The invention relates to a miniature passive two-way vacuum valve installed on various vacuum containers. Especially in an environment without power supply, it is installed on a small-volume vacuum container that is frequently and repeatedly evacuated. (2) Background technology [0002] At present, there are many types and models of solenoid valves, pneumatic valves, mechanical valves, and glass valves. However, there are not many valves used in vacuum equipment, especially small volume vacuum valves. The opening and closing of various solenoid valves are electromagnetic structures. Mechanical valves made of glass, metal and other materials are inseparable from the structure of the rotating shaft. There are unsatisfactory places. [0003] The volume of the electromagnetic vacuum valve cannot be made very small. In addition, an inconvenient power cord was dragged, which limited the moving distance of the vacuum container, and was plagued by no ...

Claims

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Application Information

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IPC IPC(8): F16K35/06F16K27/00F16K31/44F16K51/02F16K37/00B65D81/20
Inventor 刘永杰
Owner 刘永杰
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