CN101718370A - Sealing device of valve rod of vacuum valve - Google Patents
Sealing device of valve rod of vacuum valve Download PDFInfo
- Publication number
- CN101718370A CN101718370A CN200910264787A CN200910264787A CN101718370A CN 101718370 A CN101718370 A CN 101718370A CN 200910264787 A CN200910264787 A CN 200910264787A CN 200910264787 A CN200910264787 A CN 200910264787A CN 101718370 A CN101718370 A CN 101718370A
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- valve
- valve rod
- rod
- fixed block
- sleeve
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Abstract
The invention relates to a sealing device of a valve rod of a vacuum valve. The valve body of the vacuum valve is provided with an air inlet and an air outlet; one side of the valve body, which is opposite to the air inlet, is provided with a fixed block; the fixed block is coaxially sleeved with the valve rod; the rod body of the valve rod, which is positioned in the inner cavity of the valve body, is sleeved with a framework sealing part and a sleeve barrel; the framework sealing part is arranged in the sleeve barrel; the sleeve barrel is connected to the end of the fixed block, which is positioned in the inner cavity of the valve body, in a detachable way; the framework sealing part is respectively and hermetically matched with the valve rod and the sleeve barrel; the end of the valve rod, which is positioned in the inner cavity of the valve body, can be connected with a valve plate in the detachable way; the valve plate is hermetically matched with the air inlet; the framework sealing part is formed by stacking a plurality of framework sealing rings; the sleeve barrel is screwed to the end of the fixed block, which is positioned in the inner cavity of the valve body; and the valve rod is screwed with the valve plate. The vacuum valve adopting the sealing device has low maintaining frequency, convenient maintenance and reduced production cost.
Description
Technical field
The present invention relates to a kind of seal arrangement, be specifically related to a kind of sealing device of valve rod of vacuum valve.
Background technique
At present, use the vacuum valve on the vacuum suction pipeline, its valve rod adopts sylphon seal mostly, and an end of bellows is fixing with the welding of the fixed block on the valve body, the other end welds with valve plate and fixes, and valve plate is also fixedlyed connected with valve rod.In the each working procedure of vacuum valve, bellows is stretched and compresses once, causes the loss of bellows big, the life-span is short, often need to change, and the costing an arm and a leg of bellows, increased the user cost of equipment; On the other hand, when changing bellows, other parts in the vacuum valve also need be changed and can not realize recycling (being that whole spool all need be changed) at every turn, cause cost of production to increase, and have increased the workload of maintenance.
Summary of the invention
Technical problem to be solved by this invention provides a kind of sealing device of valve rod of vacuum valve, adopts the vacuum valve of sealing device, has the advantage that frequency of maintenance is low, easy to maintenance, cost of production descends.
For addressing the above problem, the invention provides a kind of sealing device of valve rod of vacuum valve, have suction port on its valve body, the air outlet, a side relative with suction port on the valve body is equipped with fixed block, the coaxial valve rod that is with in the fixed block, valve rod is on the body of rod in the body cavity and is with reinforced seal part and sleeve, the reinforced seal part places in the sleeve, sleeve is connected by removably with that end that fixed block is in the body cavity, the reinforced seal part cooperates with valve rod and sleeve seal respectively, that end that valve rod is in the body cavity is connected with valve plate by removably, and valve plate and suction port are sealed and matched.
For can concise description for the purpose of the problem, below this sealing device of valve rod of vacuum valve be all abbreviated as this seal arrangement.
After adopting above structure, valve rod carries out fore and aft motion at work, and sleeve and interior reinforced seal part thereof are then static relatively, so the bellows that needs not stop stretching in reinforced seal part and the background technique is compared, will prolong greatly its working life, so that frequency of maintenance reduces greatly; When the reinforced seal part because of reasons such as long-term uses cause that sealing effect is not good enough, when needs are changed, only need valve plate, sleeve are pulled down successively, behind the replacing reinforced seal part, install once more and can continue and come into operation, consequently easy to maintenance; Because of whether fixed block, sleeve, reinforced seal part, valve rod, valve plate all can be changed separately according to behaviour in service separately, like this, other good component of behaviour in service just can be realized recycling, compare with background technique, reduced component consumption, so that cost of production descends.
Described reinforced seal part is laminated by some backbone sealing rings, and that end that sleeve and fixed block are in the body cavity spins, and valve rod and valve plate spin.As everyone knows, spinning is a kind of laborsaving, removably connection easily, makes that the installation and maintenance of vacuum valve are convenient and strength-saving.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The present invention is further detailed explanation below by embodiment and accompanying drawing thereof:
Referring to Fig. 1, have suction port on the valve body 1 of this seal arrangement, (suction port is positioned at the below of valve body 1 in the air outlet, the air outlet is positioned at the right side of valve body 1, and omit the piece number of suction port and air outlet), a side relative with suction port on the valve body 1 is equipped with fixed block 2, fixed block 2 by bolt 4 and O shape cushion rubber 8 sealing and fixing on valve body 1, the coaxial valve rod 3 that is with in the fixed block 2, valve rod 3 is on the body of rod in valve body 1 inner chamber and is with reinforced seal part and sleeve 6, the reinforced seal part places in the sleeve 6, sleeve 6 spins with that end that fixed block 2 is in valve body 1 inner chamber, the reinforced seal part is sealed and matched with valve rod 3 and sleeve 6 respectively, that end that valve rod 3 is in valve body 1 inner chamber is connected with valve plate 5, and valve plate 5 is sealed and matched with suction port by embedding O shape cushion rubber 9 thereon.The reinforced seal part is laminated by seven backbone sealing rings 7.Valve rod 3 carries out fore and aft motion at work, and the position of valve plate 5 is moved, to realize opening valve and pass valve.
This seal arrangement compares with background technique, and concrete condition sees the following form:
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
Claims (2)
1. sealing device of valve rod of vacuum valve, have suction port on the valve body, the air outlet, a side relative with suction port on the valve body is equipped with fixed block, the coaxial valve rod that is with in the fixed block, that termination that valve rod is in the body cavity has valve plate, valve plate and suction port are sealed and matched, it is characterized in that: valve rod is on the body of rod in the body cavity and is with reinforced seal part and sleeve, the reinforced seal part places in the sleeve, sleeve is connected by removably with that end that fixed block is in the body cavity, the reinforced seal part cooperates with valve rod and sleeve seal respectively, and valve rod is connected by removably with valve plate.
2. sealing device of valve rod of vacuum valve according to claim 1 is characterized in that: described reinforced seal part is laminated by some backbone sealing rings, and that end that sleeve and fixed block are in the body cavity spins, and valve rod and valve plate spin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910264787A CN101718370A (en) | 2009-12-30 | 2009-12-30 | Sealing device of valve rod of vacuum valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910264787A CN101718370A (en) | 2009-12-30 | 2009-12-30 | Sealing device of valve rod of vacuum valve |
Publications (1)
Publication Number | Publication Date |
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CN101718370A true CN101718370A (en) | 2010-06-02 |
Family
ID=42432982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910264787A Pending CN101718370A (en) | 2009-12-30 | 2009-12-30 | Sealing device of valve rod of vacuum valve |
Country Status (1)
Country | Link |
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CN (1) | CN101718370A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109340428A (en) * | 2018-11-29 | 2019-02-15 | 攀钢集团成都钛材有限公司江油分公司 | A kind of cap of high-vacuum baffle valve with dual-seal performance |
-
2009
- 2009-12-30 CN CN200910264787A patent/CN101718370A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109340428A (en) * | 2018-11-29 | 2019-02-15 | 攀钢集团成都钛材有限公司江油分公司 | A kind of cap of high-vacuum baffle valve with dual-seal performance |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100602 |