CN203786094U - Capillary column switching device - Google Patents
Capillary column switching device Download PDFInfo
- Publication number
- CN203786094U CN203786094U CN201420128622.8U CN201420128622U CN203786094U CN 203786094 U CN203786094 U CN 203786094U CN 201420128622 U CN201420128622 U CN 201420128622U CN 203786094 U CN203786094 U CN 203786094U
- Authority
- CN
- China
- Prior art keywords
- capillary column
- switching device
- valve
- valve body
- connect
- 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 - Lifetime
Links
- 238000005219 brazing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a capillary column switching device. The capillary column switching device comprises a valve body, wherein a channel is arranged inside the valve body; one end of the valve body is connected with a valve connecting end of the switching valve; the other end of the valve body is equipped with a capillary column connecting end of the capillary column; an accommodating cavity and a through cavity used for running through the accommodating cavity and the channel are arranged inside the valve connecting end; the capillary column connecting end is equipped with a capillary column connecting hole communicated with the channel; the diameter of the through cavity and the capillary column connecting hole is greater than that of the other end of the capillary column. The capillary column switching device provided by the utility model has excellent air path sealing performances, the valve connecting end is equipped with the accommodating cavity and the through cavity, and the cavity wall of the through cavity has a certain angle, so that air path switching is facilitated, throughput is prevented from being oversized or undersized, and uniformity of the capillary column switching gas flow is realized.
Description
Technical field
The utility model relates to gas chromatographic device gas circuit coupling arrangement, is specifically related to capillary column connection valve.
Background technology
Gas chromatograph is biased sample to be carried out to the device of compartment analysis detection, comprises air-channel system, sampling system, piece-rate system, circuit control system, detection system, data acquisition and processing system.In gas chromatograph, carrier gas carries the separated sample of wish by the fixedly phase in chromatographic column, make each component separation in sample, then through detecting device, detect respectively, by data acquisition system (DAS), collect peak height or the area of each component in sample, through calculating the content that needs component.
In gas chromatograph, during detection material, utilize flowing valve to switch various gas channels, comprise flowing valve, ten-way valve, four-way valve etc., can form different sense channels, the different gas circuits such as reply purging, sample introduction and sampling are selected; At present, capillary column is directly connected with flowing valve or transfer valve, there will be the problem of damaging capillary column when installation and removal capillary column; In addition, the silver-colored pad of reason utilization due to structure in existing joint done gas circuit sealing, but silver pads in installation or use procedure, easily stuckly in passage, should not take out, when capillary column is installed or occur breakage, silver-colored pad will be used, and causes the unreasonable use of resource.At present, also do not have switching device can be communicated with capillary column and flowing valve or transfer valve, and can use Graphite pad, guarantee that the safety of capillary column and valve is connected.
Utility model content
The utility model proposes a kind of capillary column switching device, solved easy damaging problem when capillary column is connected with transfer valve in prior art, there is good air-tightness and connectedness.
The technical scheme that the utility model adopts is as follows:
Capillary column switching device, comprises valve body, and described valve inner is provided with passage, described valve body one end be provided with connect transfer valve connect valve end, the other end be provided with connect capillary column connect kapillary styletable; Described connect that valve end inside is provided with receiving compartment and for connecting the perforation chamber of receiving compartment and passage; The described kapillary styletable that connects is provided with the capillary column connector with channel connection; Described perforation chamber and described capillary column connector one end diameter are greater than the other end.
Preferably, to be the number of degrees be the angle of 40 ° ± 0.5 ° to described chamber, perforation chamber wall.
Preferably, to be the number of degrees be the angle of 90 ° ± 0.5 ° to the wall of described capillary column converting interface.
Preferably, the described valve end that connects is provided with external thread.
Preferably, in the middle of described valve body, be provided with draw-in groove.
Preferably, described valve body is formed by vacuum brazing one.
The beneficial effects of the utility model are as follows:
The capillary column switching device that the utility model provides, has outstanding gas circuit sealing property, connects valve end and is provided with receiving compartment and connects chamber, connect chamber, chamber wall and present certain angle, be conducive to the conversion of gas circuit, prevented that throughput is excessive or too small, realized the homogeneity of switching capillary column air-flow; The wall angle presentation of capillary column converting interface, is conducive to Graphite pad and also can realizes the zero dead volume of gas circuit for gas circuit sealing.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the planar structure schematic diagram of the utility model capillary column switching device;
Wherein, 1-valve body, 2-passage, 3-connects valve end, 301-receiving compartment, 302-connects chamber, and 4-connects kapillary styletable, 401-capillary column connector, 5-external thread, 6-draw-in groove.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, capillary column switching device, comprises a valve body 1, and valve body 1 inside is provided with passage 2, valve body 1 one end be provided with connect transfer valve connect valve end 3, the other end be provided with connect capillary column connect kapillary styletable 4; Connect that valve end 3 inside are provided with receiving compartment 301 and for connecting the perforation chamber 302 of receiving compartment 301 and passage 2; The described kapillary styletable 4 that connects is provided with the capillary column connector 401 being communicated with passage 2; Connect chamber 302 and capillary column connector 401 one end diameters and be greater than the other end; Passage 2 runs through valve body 1, connects capillary column connector 401 and connects chamber 302.
Wherein, connecting chamber 302 chamber walls, to be the number of degrees be the angle of 40 ° ± 0.5 °, the stability of air-flow when connecting angle that chamber 302 chamber walls present and can be conducive to gas circuit conversion; It is the angle of 90 ° ± 0.5 ° that the wall of capillary column converting interface 401 is the number of degrees, and the angle that the wall of capillary column converting interface presents is conducive to the connection of capillary column, can facilitate the use of Graphite pad simultaneously.
Connect valve end 3 and be provided with external thread 5; External thread can capillary column connection valve fixing with chromatographic equipment on, in the middle of valve body 1, is provided with draw-in groove 6, the relevant position of draw-in groove and chromatographic equipment is connected and fixed.
In addition, valve body 1 is formed by vacuum brazing one, can guarantee gas circuit impermeability and zero dead volume of capillary column switching device.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. capillary column switching device, it is characterized in that: comprise valve body (1), described valve body (1) inside is provided with passage (2), described valve body (1) one end be provided with connect transfer valve connect valve end (3), the other end be provided with connect capillary column connect kapillary styletable (4); Described connect that valve end (3) inside is provided with receiving compartment (301) and for connecting the perforation chamber (302) of receiving compartment (301) and passage (2); The described kapillary styletable (4) that connects is provided with the capillary column connector (401) being communicated with passage (2); Described perforation chamber (302) and described capillary column connector (401) one end diameter are greater than the other end.
2. capillary column switching device as claimed in claim 1, is characterized in that: it is the angle of 40 ° ± 0.5 ° that described chamber, perforation chamber (302) wall is the number of degrees.
3. capillary column switching device as claimed in claim 1, is characterized in that: it is the angle of 90 ° ± 0.5 ° that the wall of described capillary column converting interface (401) is the number of degrees.
4. the capillary column switching device as described in claim 1-3 any one, is characterized in that: the described valve end (3) that connects is provided with external thread (5).
5. capillary column switching device as claimed in claim 4, is characterized in that: in the middle of described valve body (1), be provided with draw-in groove (6).
6. capillary column switching device as claimed in claim 1, is characterized in that: described valve body (1) is formed by vacuum brazing one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128622.8U CN203786094U (en) | 2014-03-20 | 2014-03-20 | Capillary column switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128622.8U CN203786094U (en) | 2014-03-20 | 2014-03-20 | Capillary column switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786094U true CN203786094U (en) | 2014-08-20 |
Family
ID=51322268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420128622.8U Expired - Lifetime CN203786094U (en) | 2014-03-20 | 2014-03-20 | Capillary column switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931623A (en) * | 2014-03-20 | 2015-09-23 | 常州仪盟核芯仪器有限公司 | Capillary column switching device |
-
2014
- 2014-03-20 CN CN201420128622.8U patent/CN203786094U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931623A (en) * | 2014-03-20 | 2015-09-23 | 常州仪盟核芯仪器有限公司 | Capillary column switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170929 Address after: 213161 Jiangsu Province, Changzhou City West Road No. 9, Taihu science and technology industrial director Patentee after: CHANGZHOU PANNUO APPARATUS CO.,LTD. Address before: 213164 Jiangsu city of Changzhou province Wujin high tech Industrial Development Zone Dragon Road No. 10 Patentee before: CHANGZHOU YIMENG CORE INSTRUMENT CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |