CN201680060U - Separating type evacuation valve - Google Patents
Separating type evacuation valve Download PDFInfo
- Publication number
- CN201680060U CN201680060U CN2010201279279U CN201020127927U CN201680060U CN 201680060 U CN201680060 U CN 201680060U CN 2010201279279 U CN2010201279279 U CN 2010201279279U CN 201020127927 U CN201020127927 U CN 201020127927U CN 201680060 U CN201680060 U CN 201680060U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- valve seat
- spool
- type evacuation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a separating type evacuation valve, which comprises a valve seat, a cylindrical valve body and a valve rod, wherein the valve seat is fixedly arranged on equipment to be vacuumized; the valve rod is provided with a valve handle; the valve seat is internally and slidingly matched with a valve core; the upper end of the valve body is sealedly connected with the valve seat by a hoop; the side wall of the valve body is provided with a port end connected with a vacuum pump; the valve rod penetrates through the lower end of the valve body and extends into the valve body ; the top end of the valve rod is provided with external screw threads; and the lower end of the valve core is provided with an internal screwed hole matched with the lower end of the vale core. The separating type evacuation valve solves the problems that the equipment in the prior art and the evacuation valve can not be separated from each other, the connecting work is complex and the like, thereby greatly lowering the production cost.
Description
Technical field
The utility model relates to the valve class in low temperature and vacuum field, specifically is a kind of cold well of liquid nitrogen of liquid helium Dewar, Dewar container for liquefied nitrogen, liquid helium transport tube, liquid nitrogen transport tube, vacuum system and evacuation valve on other the small-sized cryogenic vacuum equipment of being used for.
Background technique
The low temperature warehousing and transportation facilities all needs vacuum insulation, and equipment all needs to vacuumize, because they often move or transportation, their vacuum generally after exhausting vacuum, and found time once more for a long time.Traditional valve is after exhausting vacuum, and valve is also stayed on the vacuum equipment, probably because of lifting damages, also might open vacuum valve because of stranger's misoperation in transit, and the equipment of destruction vacuum causes serious consequence.What traditional valve had connects by the vacuum rubber pipe, and not only trouble but also sealability are bad, and the sylphon seal valve that has, valve seat need casting, and not only cost is expensive, and welding technique requires also very high.
The model utility content
The purpose of this utility model provides a kind of separated type evacuation valve, has solved in the prior art can't separate between the equipment and evacuation valve, and problem such as connection work is loaded down with trivial details has greatly reduced cost of production.
The technical solution of the utility model is as follows:
The separated type evacuation valve, include the valve body that is fixedly installed in the valve seat treated on the vaccum-pumping equipment, tubular, the valve rod that has valve handle, be sliding combined with spool in the valve seat, the upper end and the valve seat of described valve body are tightly connected by clip, the sidewall of valve body is provided with the interface end that is connected with vacuum pump, valve rod extend in the valve body from the lower end of valve body, and the top of valve rod has outside thread, and the lower end of spool has the interior threaded hole that is mated.
The lower end of described valve body has boss, and valve seat has the groove with the boss coupling.
The lower end of described valve body has external part, and scyewed joint has the dense block jack panel on the external part outer wall, is set with seal ring on the valve rod, is equipped with hold-down ring between the bottom of locking nut and the bottom of external part, and the hold-down ring obvolvent has described seal ring.
Be provided with seal ring between described spool and the valve seat, ring set is on spool.
The utility model is valve seat to be welded on treat on the vaccum-pumping equipment, with the kF Quick Release Hoop valve seat is linked to each other with the evacuation valve interface, equally with the kF Quick Release Hoop with another interface installation bellows of valve body and be connected on the vacuum pump, draw back valve rod, promptly can vacuumize; After vacuumizing end, steadily firmly advance valve rod, be rotated counterclockwise valve rod then, spool can not rotate because of friction, after final valve rod and spool are thrown off, unclamps the KF Quick Release Hoop, and in spool blocked up and places in the valve seat, valve seat was realized separating with valve body.Solved in the prior art and can't separate between the equipment and evacuation valve, problem such as connection work is loaded down with trivial details has greatly reduced cost of production.
The utility model safety attractive in appearance is convenient to equipment transportation, has solved in the tradition some valve and can only stay and treat on the vacuumizing device, easily because of lifting damages or misoperation has serious consequences trouble.
The utility model adopts general KF clip interface, reaches the purpose of quick-release.Being connected by sealing locknut that some valve and valve are sat in the tradition connects, and adopts rubber tube to connect between valve body and the pump, be easy to leak, and the connection trouble.
The utility model processing is simple, cost economic, and traditional valve processing, except machined into, the valve seat that has needs casting, mills processing, grinding machine processing.The ripple that needs that has seals, and welding also needs very high technology, the processing trouble, and cost is up to thousand yuan.The utility model can machined into, and very simple, cost is no more than 300～400 yuan.
Sealability height of the present utility model has been installed the twice O-ring seals on the spool, and the sealing between the valve seat need not external force and compress, and the ingenious atm difference of utilizing reaches side seal according to the selfsealings principle, and by the helium mass spectrometer leak detector test, leak rate is less than 1.5X10
-10Pa.m
3Sealing between/s. valve rod and the valve seat is that other sealing together both can have been played the effect of side seal, can support valve rod again, avoided valve rod to contact with valve body, and damaged sealing surface by the inferior locknut sealing of Weir together.The two seals circle uses simultaneously, has improved sealing effect, and by helium mass spectrometer leak detector test, no matter in the switching process of valve or under the static situation, the whole leak rate of valve is less than 1.5X10
-10Pa.m
3/ s.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, the separated type evacuation valve, include and be fixedly installed in the valve seat for the treatment of on the vaccum-pumping equipment 12, the valve body 3 of tubular, the valve rod 4 that has valve handle 5, be sliding combined with spool 6 in the valve seat 2, be provided with seal ring 7 between spool 6 and the valve seat 2, seal ring 7 is set on the spool 6, the lower end of valve body 3 has boss, valve seat has the groove with the boss coupling, the upper end and the valve seat of valve body are tightly connected by clip, the sidewall of valve body 3 is provided with the interface end 8 that is connected with vacuum pump, valve rod 4 passes the lower end of valve body 3 and extend in the valve body, the lower end of valve body 3 has external part 9, and scyewed joint has dense block jack panel 10 on external part 9 outer walls, is set with seal ring 11 on the valve rod, be equipped with hold-down ring 12 between the bottom of the bottom of locking nut l0 and external part 9, hold-down ring 12 obvolvents have seal ring 11, and the top of valve rod 4 has outside thread, and the lower end of spool 6 has the interior threaded hole that is mated.
Claims (4)
1. separated type evacuation valve, include the valve body that is fixedly installed in the valve seat treated on the vaccum-pumping equipment, tubular, the valve rod that has valve handle, be sliding combined with spool in the valve seat, it is characterized in that: the upper end and the valve seat of described valve body are tightly connected by clip, the sidewall of valve body is provided with the interface end that is connected with vacuum pump, valve rod extend in the valve body from the lower end of valve body, and the top of valve rod has outside thread, and the lower end of spool has the interior threaded hole that is mated.
2. separated type evacuation valve according to claim 1 is characterized in that: the lower end of described valve body has boss, and valve seat has the groove with the boss coupling.
3. separated type evacuation valve according to claim 1, it is characterized in that: the lower end of described valve body has external part, scyewed joint has the dense block jack panel on the external part outer wall, be set with seal ring on the valve rod, be equipped with hold-down ring between the bottom of locking nut and the bottom of external part, the hold-down ring obvolvent has described seal ring.
4. separated type evacuation valve according to claim 1 is characterized in that: be provided with seal ring between described spool and the valve seat, ring set is on spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201279279U CN201680060U (en) | 2010-03-10 | 2010-03-10 | Separating type evacuation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201279279U CN201680060U (en) | 2010-03-10 | 2010-03-10 | Separating type evacuation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680060U true CN201680060U (en) | 2010-12-22 |
Family
ID=43345104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201279279U Expired - Fee Related CN201680060U (en) | 2010-03-10 | 2010-03-10 | Separating type evacuation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680060U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967426A (en) * | 2012-12-13 | 2013-03-13 | 常州博朗低温设备有限公司 | Pressurizing and leakage detection device for vacuum clamping sleeve of tank |
| CN104896783A (en) * | 2014-12-09 | 2015-09-09 | 中国科学院上海技术物理研究所 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
| CN106641274A (en) * | 2016-10-29 | 2017-05-10 | 上海交通大学 | Self-tightening sealing valve with vacuumizing function |
| CN108351033A (en) * | 2015-11-10 | 2018-07-31 | 乔治洛德方法研究和开发液化空气有限公司 | It is equipped for the valve of the upper dress formula valve in Cryo Equipment |
-
2010
- 2010-03-10 CN CN2010201279279U patent/CN201680060U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967426A (en) * | 2012-12-13 | 2013-03-13 | 常州博朗低温设备有限公司 | Pressurizing and leakage detection device for vacuum clamping sleeve of tank |
| CN102967426B (en) * | 2012-12-13 | 2015-12-16 | 常州博朗低温设备有限公司 | The pressurization leakage detection device of tank body vacuum jacket |
| CN104896783A (en) * | 2014-12-09 | 2015-09-09 | 中国科学院上海技术物理研究所 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
| CN104896783B (en) * | 2014-12-09 | 2017-05-03 | 中国科学院上海技术物理研究所 | Hollow discharger used for Stirling refrigerator and vacuum air extraction device of hollow discharger |
| CN108351033A (en) * | 2015-11-10 | 2018-07-31 | 乔治洛德方法研究和开发液化空气有限公司 | It is equipped for the valve of the upper dress formula valve in Cryo Equipment |
| CN106641274A (en) * | 2016-10-29 | 2017-05-10 | 上海交通大学 | Self-tightening sealing valve with vacuumizing function |
| CN106641274B (en) * | 2016-10-29 | 2019-09-20 | 上海交通大学 | The self-tightening sealing valve of vacuum-pumping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20130310 |