CN211453492U - Automatic headspace sample injector of gas chromatograph - Google Patents
Automatic headspace sample injector of gas chromatograph Download PDFInfo
- Publication number
- CN211453492U CN211453492U CN201922319963.9U CN201922319963U CN211453492U CN 211453492 U CN211453492 U CN 211453492U CN 201922319963 U CN201922319963 U CN 201922319963U CN 211453492 U CN211453492 U CN 211453492U
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- CN
- China
- Prior art keywords
- sample
- fixedly connected
- pure copper
- clamping piece
- gas chromatograph
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052802 copper Inorganic materials 0.000 claims abstract description 32
- 239000010949 copper Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix 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
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an automatic headspace sample injector of gas chromatograph, the on-line screen storage device comprises a base, the upper end of base is rotated and is connected with the carousel, the upper end of base is at one side fixedly connected with sample injector shell of carousel, the carousel includes the standing groove, the position of standing groove is in the edge of carousel, the inside of standing groove is provided with the pure copper clamping piece, the lower extreme of pure copper clamping piece is provided with the contact platform with the lateral wall fixed connection of standing groove and the upper end of pure copper clamping piece, the inboard centre gripping of pure copper clamping piece is provided with the sample container, the upper end of standing groove is provided with the chamfer inclined plane, the top of standing groove is provided with the sample collecting pipe, the lower part lateral wall fixedly connected with seal ring of sample collecting pipe, the lower extreme of sample collecting pipe 18 just is at seal ring's below. The utility model discloses in, adopt pure copper clamping piece, not only conveniently fix the sample container, still be favorable to thermal conduction, heat the sample fast.
Description
Technical Field
The utility model relates to a supplementary sampling device technical field of gas chromatograph especially relates to an automatic headspace injector of gas chromatograph.
Background
A headspace sample injector is a convenient and fast sample pretreatment method in gas chromatography, and is characterized in that a sample to be detected is placed in a closed container, volatile components are volatilized from a sample matrix through heating, balance is achieved in a gas-liquid (or gas-solid) phase, and top gas is directly extracted for chromatographic analysis, so that the components and the content of the volatile components in the sample are detected. The headspace sampling technology can avoid a tedious and tedious sample pretreatment process, avoid interference of an organic solvent on analysis, and reduce pollution to a chromatographic column and a sampling port.
The existing headspace sample injector basically adopts a mode of air-tight needle sample injection to extract a sample to a heating volatilization chamber. The use of a gas-tight needle is not only more complicated in the structure of the headspace sampler, but the gas-tight needle also presents sample residues. The sample detection time is prolonged once regardless of whether the airtight needle is replaced or cleaned.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an automatic headspace sample injector of a gas chromatograph.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an automatic headspace sample injector of gas chromatograph, includes the base, the upper end of base is rotated and is connected with the carousel, the upper end of base is at one side fixedly connected with sample injector shell of carousel, the carousel includes the standing groove, the position of standing groove is in the edge of carousel, the inside of standing groove is provided with the pure copper clamping piece, the lower extreme of pure copper clamping piece is provided with contact platform with the lateral wall fixed connection of standing groove and the upper end of pure copper clamping piece, the inboard centre gripping of pure copper clamping piece is provided with the sample container, the upper end of standing groove is provided with the chamfer inclined plane, the top of standing groove is provided with the sample collecting pipe, the lower part lateral wall fixedly connected with seal ring of sample collecting pipe, the lower extreme of sample collecting pipe 18 just is at seal ring's below fixedly connected with.
As a further description of the above technical solution:
the upper end embedding fixedly connected with first motor of base, first motor upwards extends has the lateral wall fixedly connected with gear of motor shaft and motor shaft.
As a further description of the above technical solution:
the lower part of carousel is provided with the recess and the lateral wall fixedly connected with teeth of a cogwheel of recess, the teeth of a cogwheel and gear intermeshing.
As a further description of the above technical solution:
the side wall of the sample collecting pipe is fixedly connected with a fixed platform, and the other side of the fixed platform is fixedly connected with a sliding block.
As a further description of the above technical solution:
the lateral wall fixedly connected with second motor of injector shell, the injector shell is provided with the spout in the below of second motor, the lateral wall of injector shell just is the first support of below fixedly connected with of spout.
As a further description of the above technical solution:
the second motor downwardly extending is provided with a lead screw penetrating sliding block, the lower end of the lead screw is rotatably connected with the first support, and one end of the sliding block extends into the sliding groove.
The utility model discloses following beneficial effect has:
1. the utility model discloses, through the standing groove on the carousel, place sample container and fixed and fully contact with the pure copper clamping piece by the pure copper clamping piece, start first motor, through the meshing transmission of gear and the teeth of a cogwheel, with the inside of the rotatory sample introduction ware shell of sending into of sample container, start the second motor, the lead screw is rotatory, make the sample collecting pipe through the slider, the downstream, contact the platform contact when the heating ring with the upper end of pure copper clamping piece, seal ring and chamfer inclined plane contact time simultaneously, stop the second motor, heating ring ohmic heating, the pure copper clamping piece adopts pure copper material heat conductivility splendid and abundant with the contact of sample container, the sample in the heat that the heating ring gived off can the rapid heating sample container, make the material that detects volatilize the collection fast, reduce the detection material collection time of waiting for the sample.
2. The utility model discloses, through seal ring and the heating ring of sample collection pipe lower extreme, not only prevent the loss of sample, still through pure copper centre gripping rapid heating sample, seal ring and heating ring's use is that whole injector is structural simpler, and sample rate is faster.
Drawings
Fig. 1 is a side view of an automatic headspace sampler for a gas chromatograph according to the present invention;
fig. 2 is a schematic cross-sectional view of a turntable of an automatic headspace sampler of a gas chromatograph according to the present invention;
fig. 3 is a schematic diagram of the sample collection of the automatic headspace sample injector of the gas chromatograph according to the present invention.
Illustration of the drawings:
1. a base; 2. a sample injector housing; 3. a turntable; 4. a first motor; 5. a gear; 6. gear teeth; 7. a placement groove; 8. chamfering the inclined plane; 9. a pure copper clip; 10. a sample container; 11. a heating ring; 12. a sealing gasket; 13. a first support; 14. a slider; 15. a chute; 16. a lead screw; 17. a fixed platform; 18. a sample collection tube; 19. a second motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: an automatic headspace sample injector of a gas chromatograph comprises a base 1, the upper end of the base 1 is rotatably connected with a rotary table 3, the upper end of the base 1 is fixedly connected with a sample injector shell 2 at one side of the rotary table 3, the rotary table 3 comprises a placing groove 7, the position of the placing groove 7 is positioned at the edge of the rotary table 3, a pure copper clamping piece 9 is arranged inside the placing groove 7, the lower end of the pure copper clamping piece 9 is fixedly connected with the side wall of the placing groove 7, a contact platform is arranged at the upper end of the pure copper clamping piece 9, a sample container 10 is clamped at the inner side of the pure copper clamping piece 9, a chamfer inclined plane 8 is arranged at the upper end of the placing groove 7, a sample collecting pipe 18 is arranged above the placing groove 7, a sealing gasket 12 is fixedly connected with the lower side wall of the sample collecting pipe 18, the sealing gasket 12 is in contact with the chamfer inclined plane 8, a placed sample escapes, the contact platform contact of heating ring 11 and the upper end of pure copper clamping piece 9, pure copper clamping piece 9 adopt pure copper material heat conductivility splendid and with sample container 10 contact abundant, the sample in sample container 10 can be heated to the heat that heating ring 11 gived off for the material that detects volatilizees fast and collects.
The upper end of base 1 imbeds first motor 4 of fixedly connected with, first motor 4 upwards extends the lateral wall fixedly connected with gear 5 that has motor shaft and motor shaft, the lower part of carousel 3 is provided with the lateral wall fixedly connected with teeth of a cogwheel 6 of recess and recess, teeth of a cogwheel 6 and gear 5 intermeshing, the lateral wall fixedly connected with fixed platform 17 of sample collection pipe 18, fixed platform 17's opposite side fixedly connected with slider 14, the lateral wall fixedly connected with second motor 19 of sample injector shell 2, sample injector shell 2 is provided with spout 15 in the below of second motor 19, sample injector shell 2's lateral wall and at the first support 13 of the below fixedly connected with of spout 15, second motor 19 downwardly extending is provided with lead screw 16 and runs through slider 14, the lower extreme of lead screw 16 rotates with first support 13 to be connected, the one end of slider 14 extends to inside the spout 15.
The working principle is as follows: when the sample feeding device is used, a sample container 10 is placed through a placing groove 7 on a rotary table 3, is fixed by a pure copper clamping piece 9 and is fully contacted with the pure copper clamping piece 9, a first motor 4 is started, the sample container 10 is rotationally fed into the interior of a sample feeding device shell 2 through the meshing transmission of a gear 5 and a gear tooth 6, a second motor 19 is started, a lead screw 16 rotates, a sample collecting pipe 18 moves downwards through a slide block 14, when a heating ring 11 is contacted with a contact platform at the upper end of the pure copper clamping piece 9 and a sealing washer 12 is contacted with a chamfer inclined plane 8, the second motor 19 is stopped, the heating ring 11 is electrified and heated, the pure copper clamping piece 9 is made of pure copper and has excellent heat conductivity and is fully contacted with the sample container 10, the heat emitted by the heating ring 11 can rapidly heat a sample in the sample container 10, the detected substances are rapidly volatilized and collected, the time for waiting for collecting the detected substances of the sample, finally, the volatile substances in the sample collection pipe 18 are sent to a gas chromatograph for detection.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. An automatic headspace sampler for a gas chromatograph, comprising a base (1), characterized in that: the sample injector is characterized in that a rotary table (3) is rotatably connected to the upper end of a base (1), a sample injector shell (2) is fixedly connected to the upper end of the base (1) on one side of the rotary table (3), the rotary table (3) comprises a placing groove (7), the position of the placing groove (7) is located at the edge of the rotary table (3), a pure copper clamping piece (9) is arranged inside the placing groove (7), the lower end of the pure copper clamping piece (9) is fixedly connected with the side wall of the placing groove (7), a contact platform is arranged at the upper end of the pure copper clamping piece (9), a sample container (10) is clamped and arranged on the inner side of the pure copper clamping piece (9), a chamfer inclined plane (8) is arranged at the upper end of the placing groove (7), a sample collecting pipe (18) is arranged above the placing groove (7), and a sealing washer (12) is fixedly, the lower end of the sample collection pipe (18) is fixedly connected with a heating ring (11) below the sealing washer (12).
2. The gas chromatograph auto-headspace sampler of claim 1, wherein: the upper end embedding fixedly connected with first motor (4) of base (1), first motor (4) upwards extend has the lateral wall fixedly connected with gear (5) of motor shaft and motor shaft.
3. The gas chromatograph auto-headspace sampler of claim 1 or 2, wherein: the lower part of carousel (3) is provided with the lateral wall fixedly connected with teeth of a cogwheel (6) of recess and recess, teeth of a cogwheel (6) and gear (5) intermeshing.
4. The gas chromatograph auto-headspace sampler of claim 1, wherein: the side wall of the sample collection pipe (18) is fixedly connected with a fixed platform (17), and the other side of the fixed platform (17) is fixedly connected with a sliding block (14).
5. The gas chromatograph auto-headspace sampler of claim 1, wherein: the lateral wall fixedly connected with second motor (19) of injector shell (2), injector shell (2) are provided with spout (15) in the below of second motor (19), the lateral wall of injector shell (2) and in the first support (13) of below fixedly connected with of spout (15).
6. The gas chromatograph auto-headspace sampler of claim 5, wherein: the second motor (19) extends downwards to be provided with a lead screw (16) which penetrates through the sliding block (14), the lower end of the lead screw (16) is rotatably connected with the first support (13), and one end of the sliding block (14) extends into the sliding groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319963.9U CN211453492U (en) | 2019-12-23 | 2019-12-23 | Automatic headspace sample injector of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319963.9U CN211453492U (en) | 2019-12-23 | 2019-12-23 | Automatic headspace sample injector of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211453492U true CN211453492U (en) | 2020-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319963.9U Expired - Fee Related CN211453492U (en) | 2019-12-23 | 2019-12-23 | Automatic headspace sample injector of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211453492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184494A (en) * | 2022-07-08 | 2022-10-14 | 谱质分析检测技术(上海)有限公司 | Automatic headspace sample injector |
-
2019
- 2019-12-23 CN CN201922319963.9U patent/CN211453492U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184494A (en) * | 2022-07-08 | 2022-10-14 | 谱质分析检测技术(上海)有限公司 | Automatic headspace sample injector |
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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: 20200908 |