CN209327288U - Gas chromatograph sampling device - Google Patents
Gas chromatograph sampling device Download PDFInfo
- Publication number
- CN209327288U CN209327288U CN201821878042.5U CN201821878042U CN209327288U CN 209327288 U CN209327288 U CN 209327288U CN 201821878042 U CN201821878042 U CN 201821878042U CN 209327288 U CN209327288 U CN 209327288U
- Authority
- CN
- China
- Prior art keywords
- gas chromatograph
- nut
- pedestal
- fixed
- bracket
- 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
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 230000008016 vaporization Effects 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 24
- 239000012159 carrier gas Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 239000011491 glass wool Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 4
- 230000005526 G1 to G0 transition Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of gas chromatograph sampling devices, including sample introduction positioning device；The sample introduction positioning device includes the pedestal for connecting with nut, is fixed with bracket on the pedestal；The bracket is provided with vertical guide groove, and being inlaid in the guide groove can be along the syringe fixed frame that guide groove slides up and down；Syringe fixed frame side is provided with vertical rack gear, and the driving gear with rack gear cooperation is provided on the bracket；It is provided with inserting needle positioning plate on the pedestal, is provided with the location hole passed through for sampling injector syringe needle on the inserting needle positioning plate；Inserting needle hole on the location hole and nut is point-blank.Gas chromatograph sampling device with above structure guarantees the repeatability for the amount that sample introduction is analyzed as heat transmitting influence caused by sample when preventing sampling injector syringe needle from encountering injection port metal and being pricked curved and finger gripping syringe, low in cost, practical.
Description
Technical field
The utility model relates to a kind of sample injectors for gas chromatograph.
Background technique
Gas chromatograph refers to the chromatography instrument for using gas as mobile phase.Its principle mainly utilizes substance
The difference of boiling point, polarity and adsorption property realizes the separation of mixture.Sample to be analysed is after vaporizer gasification by inert gas
(i.e. carrier gas, also known as mobile phase) is brought into chromatographic column, and liquid or solid stationary phase is contained in column, and each component tends in sample
Distribution or adsorption equilibrium are formed between mobile phase and stationary phase.With the flowing of carrier gas, sample component carries out instead during exercise
Multiple multiple distribution or adsorption/desorption distribute the big component of concentration in carrier gas and first flow out chromatographic column, and distribute in stationary phase
It is flowed out after the big component of concentration.
Gas chromatograph then passes to by feeder and carries out component separation in the capillary chromatograph in incubator,
It is finally sent into detection device and is detected.The automatic sampling apparatus of current most of gas chromatograph is expensive, uses
It is not flexible.Therefore, most of user using gas chromatograph when still select hand sampling, i.e., directly use the sample introduction of gas chromatograph
Syringe detects sample from the injection port of gas chromatograph injection gas chromatograph, this requires user guarantor in sample introduction
The syringe needle of syringe is held vertically into injection port, otherwise syringe needle penetrates in the dottle pin of injection port or encounters circumferential metal and can bent,
To be unable to complete repetition sample introduction, also sample is be easy to cause to pollute, sample introduction is less reproducible.
Utility model content
In view of this, the present invention provides a kind of gas chromatograph sampling device, can guarantee when carrying out hand sampling into
The vertical sample introduction of sample syringe needle avoids sample contaminated pinhead from damaging.
In order to solve the above technical problems, the technical solution of the utility model are as follows: a kind of gas chromatograph sampling device, including column
The vaporizing chamber of shape is provided with the carrier gas inlet of connection gas source on the vaporizing chamber side wall；It is provided in the vaporizing chamber same with it
The bushing pipe of axis；The bushing pipe is internally provided with quartz glass wool, and liner at its lower end connects capillary chromatograph；On the vaporizing chamber
End is provided with for closed dottle pin；It is provided with the nut for fixing dottle pin at the top of the vaporizing chamber, is provided on the nut
Inserting needle hole；It further include the sample introduction positioning device being fixed on nut；The sample introduction positioning device includes for connecting with nut
Pedestal is fixed with bracket on the pedestal；The bracket is provided with vertical guide groove, and being inlaid in the guide groove can be along guiding
The syringe fixed frame that slot slides up and down；Syringe fixed frame side is provided with vertical rack gear, is arranged on the bracket
There is the driving gear with rack gear cooperation；Inserting needle positioning plate is provided on the pedestal, be provided on the inserting needle positioning plate for into
The location hole that sample syringe needle passes through；Inserting needle hole on the location hole and nut is point-blank.
As an improvement the inserting needle positioning plate is provided with long hole, and benefit is fixed by bolts on bracket.So that inserting needle
The position of positioning plate can finely tune, and guarantee inserting needle channel on the same line.
As an improvement the pedestal includes two c-clips, the c-clip lower part is installed with clamping screw.Pass through
The clamping screw of lower section peaks on the nut of fixed dottle pin, facilitates the fixation of entire sample introduction positioning device.
As a preference, being fixed with heat block on the vaporization chamber outer wall.For keeping vaporizing indoor temperature, favorably
With the vaporization of sample.
As an improvement be located at dottle pin on the vaporizing chamber side wall is provided with side-blown outlet between bushing pipe.Gas phase color
Spectrum analysis requires sample size and impurity stringenter.And dottle pin is in injection port position.The general temperature of vaporizing chamber is all 150
Degree or more, (generally rubber, good has a strata tetrafluoroethylene) has organic substance etc. and evaporates so dottle pin.
And the substance evaporated will enter vaporizing chamber, and then pollute chromatographic system and have larger impact to analysis result.So wanting
These volatile substances are blown to outside vaporizing chamber.
As a preference, the syringe fixed frame includes the bottom plate being embedded in guide groove, fixed on the bottom plate
There are two buckles up and down.
The gas chromatograph sampling device having the beneficial effect that with above structure of the utility model, using machinery positioning
Mode, by the injection port center of the syringe needle of sampling injector perpendicular alignmnet gas chromatograph always, to guarantee every time same
Sample delivery point sample introduction, and prevent sampling injector syringe needle when encountering injection port metal and being pricked curved and finger gripping syringe since heat is transmitted
It is influenced caused by sample, guarantees the repeatability for the amount that sample introduction is analyzed, it is low in cost, it is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Marked in the figure: 1 vaporizing chamber, 2 bushing pipes, 3 quartz glass wools, 4 carrier gas inlets, 5 side-blown outlets, 6 pedestals, 7 brackets, 8
Guide groove, 9 syringe fixed frames, 10 driving gears, 11 rack gears, 12 inserting needle positioning plates, 13 bolts, 14 dottle pins, 15 clamping screws,
16 sampling injectors, 17 nuts, 18 heat blocks.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to specific implementation
The utility model is described in further detail for mode.
As shown in Figure 1, the utility model includes columnar vaporizing chamber 1, connection gas source is provided on 1 side wall of vaporizing chamber
Carrier gas inlet 4；Coaxial bushing pipe 2 is provided in the vaporizing chamber 1；The bushing pipe 2 is internally provided with quartz glass wool
3, and 2 lower end of bushing pipe connects capillary chromatograph；1 upper end of vaporizing chamber is provided with for closed dottle pin 14；The vaporization
It is provided with the nut 17 for fixing dottle pin 14 at the top of room 1, is provided with inserting needle hole on the nut 17；It further include being fixed on nut 17
On sample introduction positioning device；The sample introduction positioning device includes the pedestal 6 for connecting with nut 17, is fixed on the pedestal 6
There is bracket 7；The bracket 7 is provided with vertical guide groove 8, and the note that can be slided up and down along guide groove 8 is inlaid in the guide groove 8
Emitter fixed frame 9；9 side of syringe fixed frame is provided with vertical rack gear 11, is provided on the bracket 7 and rack gear 11
The driving gear 10 of cooperation；It is provided with inserting needle positioning plate 12 on the pedestal 6, is provided on the inserting needle positioning plate 12 for sample introduction
The location hole that 16 syringe needle of syringe passes through；Inserting needle hole on the location hole and nut 17 is point-blank.
Needle positioning plate 12 is provided with long hole, and is fixed on bracket 7 using bolt 13.Pedestal 6 includes two c-clips,
The c-clip lower part is installed with clamping screw 15.Heat block 18 is fixed on 1 outer wall of vaporizing chamber.On 1 side wall of vaporizing chamber be located at every
Pad 14 is provided with side-blown outlet 5 between bushing pipe 2.Syringe fixed frame 9 includes the bottom plate being embedded in guide groove 8, the bottom
Two buckles up and down are fixed on plate.
When work, entire sample introduction positioning device is provided on nut 17 by pedestal 6 first, and utilize locking screw
Bolt 15 is locked.Inserting needle positioning plate 12 is adjusted to the surface in the inserting needle hole on nut 17, so that inserting needle hole and and positioning hole location
In on same straight line.Then sampling injector 16 is fixed on syringe fixed frame 9 using buckle, and by syringe needle through positioning
Hole.The handle drive driving gear 10 shaken on driving gear 10 rotates, so that driving gear 10 and the cooperation drive of rack gear 11 are whole
A syringe fixed frame 9 moves downward, and syringe needle passes through nut 17, dottle pin 14 (being preset with pin hole) enters in bushing pipe 2, finally pushes
The piston of sampling injector 16 completes sample introduction.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of gas chromatograph sampling device, including columnar vaporizing chamber, connection gas source is provided on the vaporizing chamber side wall
Carrier gas inlet；Coaxial bushing pipe is provided in the vaporizing chamber；The bushing pipe is internally provided with quartz glass wool, and serves as a contrast
Pipe lower end connects capillary chromatograph；The vaporizing chamber upper end is provided with for closed dottle pin；It is provided at the top of the vaporizing chamber
For fixing the nut of dottle pin, inserting needle hole is provided on the nut；It is fixed that it is characterized by also including the sample introductions being fixed on nut
Position device；The sample introduction positioning device includes the pedestal for connecting with nut, is fixed with bracket on the pedestal；The bracket
It is provided with vertical guide groove, being inlaid in the guide groove can be along the syringe fixed frame that guide groove slides up and down；The injection
Device fixed frame side is provided with vertical rack gear, and the driving gear with rack gear cooperation is provided on the bracket；On the pedestal
It is provided with inserting needle positioning plate, is provided with the location hole passed through for sampling injector syringe needle on the inserting needle positioning plate；The positioning
Inserting needle hole on hole and nut is point-blank.
2. a kind of gas chromatograph sampling device according to claim 1, it is characterised in that: the inserting needle positioning plate is provided with
Long hole, and benefit is fixed by bolts on bracket.
3. a kind of gas chromatograph sampling device according to claim 1, it is characterised in that: the pedestal includes two C-shapeds
Buckle, the c-clip lower part is installed with clamping screw.
4. a kind of gas chromatograph sampling device according to claim 1, it is characterised in that: fixed on the vaporization chamber outer wall
There is heat block.
5. a kind of gas chromatograph sampling device according to claim 1, it is characterised in that: be located on the vaporizing chamber side wall
Dottle pin is provided with side-blown outlet between bushing pipe.
6. a kind of gas chromatograph sampling device according to claim 1, it is characterised in that: the syringe fixed frame includes
The bottom plate being embedded in guide groove is fixed with two buckles up and down on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821878042.5U CN209327288U (en) | 2018-11-14 | 2018-11-14 | Gas chromatograph sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821878042.5U CN209327288U (en) | 2018-11-14 | 2018-11-14 | Gas chromatograph sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209327288U true CN209327288U (en) | 2019-08-30 |
Family
ID=67710319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821878042.5U Expired - Fee Related CN209327288U (en) | 2018-11-14 | 2018-11-14 | Gas chromatograph sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209327288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924017A (en) * | 2022-05-30 | 2022-08-19 | 宁夏计量质量检验检测研究院 | Portable semi-automatic gas chromatograph liquid sample introduction device |
-
2018
- 2018-11-14 CN CN201821878042.5U patent/CN209327288U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924017A (en) * | 2022-05-30 | 2022-08-19 | 宁夏计量质量检验检测研究院 | Portable semi-automatic gas chromatograph liquid sample introduction device |
| CN114924017B (en) * | 2022-05-30 | 2024-03-29 | 宁夏计量质量检验检测研究院 | Portable semi-automatic gas chromatograph liquid sampling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |