CN2355170Y - Multifunctioanl high vacuum valve - Google Patents
Multifunctioanl high vacuum valve Download PDFInfo
- Publication number
- CN2355170Y CN2355170Y CN 98229849 CN98229849U CN2355170Y CN 2355170 Y CN2355170 Y CN 2355170Y CN 98229849 CN98229849 CN 98229849 CN 98229849 U CN98229849 U CN 98229849U CN 2355170 Y CN2355170 Y CN 2355170Y
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- China
- Prior art keywords
- valve
- valve seat
- spool
- vacuum gauge
- passage
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- 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 relates to a multifunctional high vacuum valve, which is provided with a valve seat, a valve core and a vacuum gauge tube. The valve seat is provided with a gas passage, both ends of the gas passage is formed into an internal opening and an external opening of the passage. The front end of the vacuum gauge tube is exposed in the gas passage of the valve seat, and an electrode of the back end of the vacuum gauge tube is exposed outside the valve seat. The utility model is characterized in that the front end of the valve core extends into an external opening of the gas passage of the valve seat and blocks the external opening of the passage of the valve seat. The outer wall of the valve core is matched with the inner wall of the external opening of the passage of the valve seat, and an elastic and sealed member is arranged between the valve core and the external opening of the passage of the valve seat. The valve has the advantages of simple structure and low cost; the valve is conveniently used for medium and small-sized containers; the valve has the function of the automatic decompression.
Description
The utility model relates to a kind of valve, especially a kind of vacuum valve.
Low-temperature (low temperature) vessel with vacuum insulation interlayer is widely used in every field.This series products is finished the vacuum system that promptly breaks away from vaccum-pumping equipment after dynamically bleeding and become a static state by manufacturer.Under the condition that can not bleed to it continuously, the thermal insulating layer of container need remain certain degree of vacuum in whole using process, otherwise container performance will be affected.For this reason, the common hope of the user of low-temperature (low temperature) vessel can in use detect degree of vacuum voluntarily.China's utility application high vacuum valve of once disclosing a kind of with vacuum gauge No. 94229616.8, this valve comprise housing, be arranged on spool in the housing, be threaded with spool and housing and with the transmission body of handle and be welded on vacuum gauge on the housing.This valve had both simultaneously vacuumize, the function of vacuum seal and Vacuum testing, thereby have certain advantage.But its structure is comparatively complicated, and volume is corresponding bigger, and the fabricating cost height generally only is used for tun.For the medium and small container of a large amount of uses, above-mentioned existing valve then inconvenience uses.From another angle, the above-mentioned transmission body formula spool operating structure of this valve setting not only makes the structure of valve be tending towards complicated, and the probability of gas leakage is increased.Therefore, above-mentioned existing valve exists defective.
The purpose of this utility model provides a kind of simple in structure, and fabricating cost is low, and sealing is reliable, is convenient to the multi-functional high vacuum valve that large, medium and small type container uses.
The purpose of this utility model realizes in the following manner: the spool that replaces above-mentioned existing valve with the spool of seal plug form, and the spool operating structure of transmission body formula is set no longer, thereby valve mechanism is simplified greatly, the corresponding raising of reliability, not only reduced fabricating cost, and reduced the valve volume, make it to be applicable to large, medium and small type container.Simultaneously, use the spool of seal plug form also to make valve possess the releasing pressure automatically function, the Safety performance of device is improved.Specifically, multi-functional high vacuum valve of the present utility model has valve seat, spool and vacuum gauge, described valve seat has gas channel, the two ends of this gas channel constitute passage internal orifice and passage collar extension, the bare front end of vacuum gauge is in the gas channel of valve seat, the back termination electrode of vacuum gauge is exposed to outside the valve seat, in the utility model, the front end of above-mentioned spool stretches into the collar extension of valve seat gas channel and with this passage sealing external orifice, the outer wall of described spool matches with the inwall of described passage collar extension, is provided with elastomer seal between spool and described passage collar extension.Like this, when using multi-functional high vacuum valve of the present utility model, can be valve body is fixing on container outer wall by modes such as welding or fastening piece connections, allow the chamber communicates within the thermal insulating layer of passage internal orifice and container of valve seat.When vacuumizing for the thermal insulating layer of container, the spool of plug form can be extracted the passage collar extension of valve seat, utilize air-extractor outwards to bleed through valve base channel.When the degree of vacuum for the treatment of the container thermal insulating layer reaches requirement, again the spool front end is stretched into the valve base channel collar extension, with this sealing external orifice, valve body is closed condition, and container can normally use.When the user need detect the degree of vacuum of container thermal insulating layer, only needing the electrode of vacuum gauge rear end and vacuum measuring instrument joined got final product.Because spool matches with the passage collar extension of valve seat, and the front end ecto-entad of spool stretches into the passage collar extension of valve seat, in the normal using process of container, outside atmospheric pressure is greater than container vacuum sandwich pressure, under the pressure difference effect, spool can be subjected to the thrust of ecto-entad, and its shutoff to the passage collar extension is tending towards tightly, thereby guarantees the degree of vacuum of container thermal insulating layer.If because of accident causes air pressure in the thermal insulating layer greater than external pressure, then spool can be subjected to thrust from inside to outside, when this thrust reached certain value, spool promptly can become flexible voluntarily, thereby laid down the interior pressure of thermal insulating layer, prevented danger.In valve of the present utility model, set vacuum gauge can be fixed on the valve seat, also can be directly fixed on the spool.Because therefore the maintenance that a kind of mode in back helps simplifying the making of valve and is convenient to valve is good in this mode especially.In addition, also can on valve seat, set up protective housing, spool be protected, to guarantee its sealability with the rear end coating of spool.When being fixed in vacuum gauge on the spool, the protective housing of setting up then can together coat the back termination electrode of vacuum gauge.For making valve still have the automatic pressure-relieving function, the protective housing of setting up can adopt with the friction tight mode of valve seat and be fixed on the valve seat, but also can reach the purpose of pressure release by the mode of offering pore on protective housing.When on protective housing, offering pore, protective housing then can with valve seat between adopt and to be threaded or snap close such as is connected at Placement.
Multi-functional high vacuum valve of the present utility model is compared with aforementioned existing valve, and its structure is more simple, and fabricating cost is low, and sealability is particularly reliable, and is convenient to large, medium and small type container use.Simultaneously, this valve has also possessed the releasing pressure automatically function, and the Safety performance of device is improved.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Fig. 1 is the structural representation of multi-functional high vacuum valve among the embodiment 1.
Fig. 2 is the structural representation of multi-functional high vacuum valve among the embodiment 2.
Fig. 3 is the structural representation of multi-functional high vacuum valve among the embodiment 3.
Embodiment 1:
As shown in Figure 1, multi-functional high vacuum valve in the present embodiment has valve seat 1, spool 2 and vacuum gauge 3, described valve seat 1 has gas channel 4, the two ends of this gas channel 4 constitute passage internal orifice and passage collar extension, the bare front end of vacuum gauge 3 is in the gas channel 4 of valve seat, and the back termination electrode of vacuum gauge 3 is exposed to outside the valve seat 1.In the present embodiment, the front end of described spool 2 stretches into the collar extension of valve seat gas channel 4 and with this passage sealing external orifice, the outer wall of described spool 2 matches with the inwall of described passage collar extension, is provided with elastomer seal 5 between spool 2 and described passage collar extension.In this example, above-mentioned vacuum gauge 3 is fixed on the valve seat 1.In addition, present embodiment also is fixed with the protective housing 6 with the rear end coating of spool 2 on valve seat 1, to guarantee sealability.This protective housing 6 is placed on the valve seat 1 in the drive fit mode, and offers pore 7 on protective housing.For the ease of under valve is in air-tight state, extracting spool (except that the manufacturer of valve implements the maintenance valve, the valve user need not to do so usually), also be provided with screw socket 8 in this example in the spool rear end.Like this, can utilize special tool (screw mechanism) to screw in this screw socket 8 and spool is extracted from valve seat.Certainly, if do not consider under valve is in air-tight state, to extract spool, the spool that these screw socket 8 forms then can the be set structure of choosing.Simultaneously, this screw socket 8 also can be replaced by other similar spools such as boss that is arranged at the spool rear end or drag hook structure of choosing.
Embodiment 2:
As shown in Figure 2, the structure of multi-functional high vacuum valve is similar to embodiment 1 in the present embodiment.Different is, the vacuum gauge 3 in this example is fixed on the spool 2, and the front end of this vacuum gauge 3 stretches out the front end of spool 2 and is exposed in the gas channel 4 of valve seat, and the back termination electrode of this vacuum gauge 3 extends the rear end of spool 2 and is exposed to outside the valve seat 1.Present embodiment is fixed with the protective housing 6 that the back termination electrode with the rear end of spool 2 and vacuum gauge 3 coats simultaneously on valve seat 1, this protective housing 6 is placed on the valve seat 1 in the drive fit mode, does not offer pore on the protective housing 6.For prevent the user when detecting vacuum because of operating the unskilled electrode that damages vacuum gauge 3, this example has also been set up the vacuum gauge transit joint 9 that joins with the vacuum gauge rear end, the back termination electrode of vacuum gauge 3 promptly passes through this transit joint 9 and arrives outside the valve seat 1.Certainly, also this transit joint 9 can be set, and directly allow the back termination electrode of vacuum gauge 3 extend to outside the valve seat 1.
Embodiment 3:
As shown in Figure 3, the structure of multi-functional high vacuum valve is similar to embodiment 2 in the present embodiment.Different is to offer pore 7 on the protective housing 6 in this example.
Claims (7)
1, a kind of multi-functional high vacuum valve, have valve seat, spool and vacuum gauge, described valve seat has gas channel, the two ends of this gas channel constitute passage internal orifice and passage collar extension, the bare front end of vacuum gauge is in the gas channel of valve seat, the back termination electrode of vacuum gauge is exposed to outside the valve seat, the front end that it is characterized in that described spool stretches into the collar extension of valve seat gas channel and with this passage sealing external orifice, the outer wall of described spool matches with the inwall of described passage collar extension, is provided with elastomer seal between spool and described passage collar extension.
2, multi-functional high vacuum valve as claimed in claim 1 is characterized in that described vacuum gauge is fixed on the valve seat.
3, multi-functional high vacuum valve as claimed in claim 1 or 2 is characterized in that being fixed with the protective housing with the rear end coating of spool on valve seat.
4, multi-functional high vacuum valve as claimed in claim 1, it is characterized in that described vacuum gauge is fixed on the spool, the front end of this vacuum gauge stretches out the front end of spool and is exposed in the gas channel of valve seat, and the back termination electrode of this vacuum gauge extends the rear end of spool and is exposed to outside the valve seat.
5, multi-functional high vacuum valve as claimed in claim 4 is characterized in that being fixed with the protective housing that the back termination electrode with the rear end of spool and vacuum gauge coats simultaneously on valve seat.
6, multi-functional high vacuum valve as claimed in claim 5 is characterized in that described protective housing is placed on the valve seat in the drive fit mode.
7, as claim 5 or 6 described multi-functional high vacuum valves, it is characterized in that on described protective housing, offering pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98229849 CN2355170Y (en) | 1998-11-10 | 1998-11-10 | Multifunctioanl high vacuum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98229849 CN2355170Y (en) | 1998-11-10 | 1998-11-10 | Multifunctioanl high vacuum valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2355170Y true CN2355170Y (en) | 1999-12-22 |
Family
ID=33979657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98229849 Expired - Fee Related CN2355170Y (en) | 1998-11-10 | 1998-11-10 | Multifunctioanl high vacuum valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2355170Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486018A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | Large-flow cold end of high-pressure low-temperature reciprocating pump |
| CN103485995A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | High purity ammonia low temperature reciprocating pump |
| CN104315331A (en) * | 2014-10-20 | 2015-01-28 | 江苏鸿昌特种车辆有限公司 | Novel low-temperature liquid storage tank |
| CN112284611A (en) * | 2020-11-10 | 2021-01-29 | 成都国光电气股份有限公司 | Full-range vacuum gauge protection device |
-
1998
- 1998-11-10 CN CN 98229849 patent/CN2355170Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486018A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | Large-flow cold end of high-pressure low-temperature reciprocating pump |
| CN103485995A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | High purity ammonia low temperature reciprocating pump |
| CN103485995B (en) * | 2013-10-11 | 2016-06-29 | 湖州三井低温设备有限公司 | A kind of high purity ammonia low temperature reciprocating pump |
| CN104315331A (en) * | 2014-10-20 | 2015-01-28 | 江苏鸿昌特种车辆有限公司 | Novel low-temperature liquid storage tank |
| CN104315331B (en) * | 2014-10-20 | 2016-08-17 | 江苏鸿昌特种车辆有限公司 | A kind of new type low temperature liquid storage tank |
| CN112284611A (en) * | 2020-11-10 | 2021-01-29 | 成都国光电气股份有限公司 | Full-range vacuum gauge protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |