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High-corrosion-resistance compound sealing vacuum valve and manufacturing technique of sealing system comprising same

A composite sealing and manufacturing technology, applied in shaft seals, valve details, valve devices, etc., can solve the problems of weak anti-corrosion ability of liquid valves, unsatisfactory sealing effect, rubber corrosion, etc., and achieve strict controllability of the shaping process. , good sealing, strong anti-corrosion effect

Inactive Publication Date: 2017-12-08
建湖县联华玻璃仪器厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially the liquid valve to control the amount of chemical reagents during the experiment is more prominent
It is required to be sealed and anti-corrosion. However, the existing liquid valves have weak anti-corrosion ability, and some valve bodies are made of special metals, which will corrode and block when used for a long time
In particular, most sealing gaskets are made of rubber materials, and after a period of use, the rubber corrodes and does not seal
If a hard anti-corrosion material is used as the sealing material, the sealing effect is not ideal

Method used

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  • High-corrosion-resistance compound sealing vacuum valve and manufacturing technique of sealing system comprising same
  • High-corrosion-resistance compound sealing vacuum valve and manufacturing technique of sealing system comprising same
  • High-corrosion-resistance compound sealing vacuum valve and manufacturing technique of sealing system comprising same

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the specific implementation of this design will be further described: Figure 7 Or as shown in 8, the inner core of the nut 8 is provided with outer teeth, and the outer side of the nut 8 is provided with inner teeth, the valve core 4 is screwed on the inner core of the nut 8 through counterclockwise screw teeth, and the upper end of the valve seat 7 is screwed with clockwise screw teeth. Fit on the nut 8 outer inner teeth, so that the valve core 4 can be moved up and down by rotating the nut 8, so that the valve core matching cone surface 401 and the valve seat matching cone surface 702 are separated and attached, that is, the opening and closing of the vacuum valve is realized. One of the inlet and outlet pipe ports on the valve seat 7 is arranged at the bottom of the valve seat 7, and the opening is opposite to the valve core 4, and the other nozzle is arranged on the side wall of the valve body 701; two rubber O-rings 5...

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Abstract

The invention relates to a high-corrosion-resistance compound sealing vacuum valve and a manufacturing technique of a sealing system comprising the same, in particular to a vacuum valve provided with a tetrafluoromethane sealing element and a rubber sealing element for compound sealing, and further relates to a compound sealing and manufacturing technique for the tetrafluoromethane sealing element and the rubber sealing element in the vacuum valve. According to the vacuum valve, the O-shaped rubber sealing ring is arranged in a sealing ring groove formed in the side wall of a valve element in tensioned and sleeved modes, then the O-shaped tetrafluoromethane sealing ring with a slightly larger outer diameter is arranged outside the O-shaped rubber sealing ring in a sleeving mode, and afterwards, the outer surface of the O-shaped rubber sealing ring is completely wrapped with the O-shaped tetrafluoromethane sealing ring through shaping of a specific mold. The vacuum valve has the advantages of being high in corrosion resistance, good in airtightness, long in service life and the like; and the compound sealing and manufacturing technique for the vacuum valve has the advantages that the design is scientific and reasonable, the shaping process can be strictly controlled, and performance complementation between the sealing elements is achieved.

Description

technical field [0001] The invention relates to a highly anti-corrosion composite sealed vacuum valve and its sealing system manufacturing process, in particular to a composite seal and a vacuum valve of a tetrafluoro seal and a rubber seal, and also relates to a compound composite of a tetrafluoro seal and a rubber seal in a vacuum valve. The sealing manufacturing process belongs to the technical field of mechanical manufacturing design and high molecular polymer shaping technology. Background technique [0002] Among all kinds of scientific experiments, chemical experiments are one of the important experimental processes. However, in chemical experiments, instruments and equipment are indispensable experimental tools in the experimental process. In particular, the liquid valve to control the amount of chemical reagents during the experiment is more prominent. It is required to be sealed and anti-corrosion. However, the existing liquid valves have weak anti-corrosion abil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/04
CPCF16K41/04
Inventor 崔红生
Owner 建湖县联华玻璃仪器厂
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