CN221124454U - Headspace sampler - Google Patents
Headspace sampler Download PDFInfo
- Publication number
- CN221124454U CN221124454U CN202322963329.5U CN202322963329U CN221124454U CN 221124454 U CN221124454 U CN 221124454U CN 202322963329 U CN202322963329 U CN 202322963329U CN 221124454 U CN221124454 U CN 221124454U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- heating chamber
- headspace sampler
- plate
- heating
- 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.)
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- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 238000005070 sampling Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 15
- 238000005485 electric heating Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Abstract
The utility model discloses a headspace sampler, which comprises: the gas chromatograph is located the heating chamber left side, heating chamber upside fixedly connected with L shape backup pad, L shape backup pad downside fixedly connected with pneumatic cylinder, pneumatic cylinder output fixedly connected with clamp plate, the indoor bottom fixedly connected with fixed plate of heating, fixed plate upside fixedly connected with power connector, power connector both sides fixedly connected with conductive support plate, and upper end fixedly connected with electric putter, electric putter output fixedly connected with push pedal, the indoor top fixedly connected with heating chamber of heating, conductive support plate upper end fixedly connected with electrical heating coil, the electrical heating coil is located the heating chamber surface. Through above-mentioned structure, be convenient for take out the test tube, avoid the waste that heat loss caused in a large number simultaneously.
Description
Technical Field
The utility model relates to the technical field of chemical analysis equipment, in particular to a headspace sampler.
Background
The headspace sampler is a convenient and quick sample pretreatment method in gas chromatography, generally, a sample is placed in a closed container, then the container is heated, so that the sample in the closed container reaches a gas-liquid two-phase equilibrium state, and then the gas phase in the closed container is extracted for detection.
When the headspace sampler is used, a certain amount of sample is filled into the sample bottle and sealed, then the sample bottle is placed in a heating rotary disc of the headspace sampler and heated to be balanced under a certain temperature, then the gas in the top space of the sample bottle is led into a sample ring through a sample injection system of the headspace sampler, then the gas in the sample ring is blown into a sample injection port of a gas chromatograph through carrier gas of the headspace sampler, and finally separation detection is realized through a chromatographic column and a detector of the gas chromatograph.
In practical use, the conventional headspace sampler has the following disadvantages: 1. the sample bottle is placed in the heating rotary disc for heating, and the sample bottle filled with the sample needs to be taken out of the heating rotary disc by bare hands after the headspace analysis of the sample, and the side wall of the sample bottle is usually clung to a heating station of the heating rotary disc, so that the sample bottle is not easy to take out by bare hands; 2. the components in the sample bottle need to be heated, and the top gas can be extracted to perform experiments after the components reach phase equilibrium, but when the components are taken out, heat is easy to lose, and energy waste is caused, so that the headspace sampler is provided.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a headspace sampler, which solves the problems that a sample bottle is not easy to take out and heat is easy to run off.
The utility model also provides the headspace sampler, which comprises a bottom plate, wherein the upper side of the bottom plate is fixedly connected with a gas chromatograph and a heating chamber, the gas chromatograph is positioned on the left side of the heating chamber, the upper side of the heating chamber is fixedly connected with an L-shaped supporting plate, the lower side of the L-shaped supporting plate is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a pressing plate, the bottom of the heating chamber is fixedly connected with a fixing plate, the upper side of the fixing plate is fixedly connected with a power connector, the two sides of the power connector are fixedly connected with conductive supporting plates, the upper end of the fixing plate is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a push plate, the inner top of the heating chamber is fixedly connected with a heating cavity, the upper end of the conductive supporting plate is fixedly connected with an electric heating ring, and the electric heating ring is positioned on the outer surface of the heating cavity.
According to the headspace sampler, the input end of the gas chromatograph is provided with the air inlet pipe, the other end of the air inlet pipe is fixedly connected with the pressing plate, and the inside of the air inlet pipe positioned in the pressing plate is movably provided with the sampling needle.
According to the headspace sampler, a hand valve is arranged at the output end of the gas chromatograph.
According to the headspace sampler, a rack is fixedly connected in the heating cavity, a test tube is connected in the rack in a sliding manner, and the lower end of the test tube is positioned on the push plate.
According to the headspace sampler, the outer side of the conductive supporting plate is fixedly connected with an insulating sleeve.
According to the headspace sampler, the inner wall of the heating chamber is fixedly connected with heat insulation cotton.
The utility model has the following beneficial effects:
1. According to the utility model, the electric heating ring is arranged outside the heating cavity, so that a tested sample in the test tube is heated rapidly and uniformly.
2. According to the utility model, the electric push rod is used for pushing the test tube to rise, so that the test tube rises to the upper surface of the heating chamber, the test tube is taken out and replaced, the operation is convenient, and the waste caused by great heat loss is avoided.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a block diagram of a headspace injector according to the present utility model;
FIG. 2 is a side view of a headspace injector according to the present utility model;
FIG. 3 is a cross-sectional view of a heating chamber of a headspace injector according to the present utility model;
fig. 4 is an enlarged view of the structure at a in fig. 3.
Legend description:
1. A bottom plate; 2. a gas chromatograph; 3. a heating chamber; 4. an L-shaped support plate; 5. an air inlet pipe; 6. a pressing plate; 7. a hydraulic cylinder; 8. a fixing plate; 9. a power supply connector; 10. a conductive support plate; 11. an electric push rod; 12. a push plate; 13. an electric heating ring; 14. a heating chamber; 15. a placing rack; 16. a test tube; 17. and a hand valve.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
Referring to fig. 1-4, a headspace sampler in an embodiment of the present utility model includes a base plate 1, a gas chromatograph 2 and a heating chamber 3 are fixedly connected to the upper side of the base plate 1, a hand valve 17 is installed at the output end of the gas chromatograph 2, the gas chromatograph 2 is located at the left side of the heating chamber 3, an L-shaped support plate 4 is fixedly connected to the upper side of the heating chamber 3, a hydraulic cylinder 7 is fixedly connected to the lower side of the L-shaped support plate 4, the output end of the hydraulic cylinder 7 is fixedly connected to a pressing plate 6, the pressing plate 6 is located at the middle position of the upper side of the heating chamber 3, meanwhile, heat in the heating chamber 3 is prevented from flowing out, an air inlet pipe 5 is installed at the input end of the gas chromatograph 2, the air inlet pipe 5 is a hose, the other end of the air inlet pipe 5 is fixedly connected with the pressing plate 6, a sampling needle is movably installed inside the air inlet pipe 5 located in the pressing plate 6, and the sampling needle is located in a test tube 16;
The inner bottom of the heating chamber 3 is fixedly connected with the fixing plate 8, the inner wall of the heating chamber 3 is fixedly connected with the heat insulation cotton, the upper side of the fixing plate 8 is fixedly connected with the power connector 9, two sides of the power connector 9 are fixedly connected with the conductive support plate 10, the upper end of the power connector is fixedly connected with the electric push rod 11, the outer side of the conductive support plate 10 is fixedly connected with the insulating sleeve, the output end of the electric push rod 11 is fixedly connected with the push plate 12, the inner top of the heating chamber 3 is fixedly connected with the heating cavity 14, the push plate 12 is positioned at the inner bottom of the heating cavity 14, the upper end of the conductive support plate 10 is fixedly connected with the electric heating ring 13, the electric heating ring 13 is positioned at the outer surface of the heating cavity 14, a test sample in the test tube 16 is enabled to be heated rapidly and uniformly, the lower end of the test tube 16 is positioned on the push plate 12, when the test tube 16 is replaced, the electric push rod 11 pushes the test tube 16 to rise, the test tube 16 rises, the test tube is enabled to rise to the upper surface of the heating chamber 3, the test tube is taken out, the test tube is convenient to be operated, and meanwhile waste caused by a large amount of heat is avoided.
Working principle: when the sample to be tested is placed in the test tube 16, then the sampling needle is inserted into the test tube 16, and then the electric heating ring 13 is powered on to heat, so that the electric heating ring 13 heats the heating cavity 14, and the sample to be tested in the test tube 16 is heated rapidly and uniformly; when the test tube needs to be replaced, the hydraulic cylinder 7 is started, the hydraulic cylinder 7 drives the pressing plate 6 to ascend, then the electric push rod 11 is started again, the electric push rod 11 pushes the test tube 16 to ascend, the test tube 16 is enabled to ascend to the upper surface of the heating chamber 3, the test tube 16 is taken out to be replaced, the operation is convenient, and meanwhile waste caused by massive heat loss is avoided.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (6)
1. A headspace sampler, comprising: bottom plate (1), bottom plate (1) upside fixedly connected with gas chromatograph (2) and heating chamber (3), gas chromatograph (2) are located heating chamber (3) left side, heating chamber (3) upside fixedly connected with L shape backup pad (4), L shape backup pad (4) downside fixedly connected with pneumatic cylinder (7), pneumatic cylinder (7) output fixedly connected with clamp plate (6), fixed plate (8) in heating chamber (3), fixed plate (8) upside fixedly connected with power connector (9), power connector (9) both sides fixedly connected with electrically conductive backup pad (10), and upper end fixedly connected with electric putter (11), electric putter (11) output fixedly connected with push pedal (12), heating chamber (14) are connected with in heating chamber (3), electrically conductive backup pad (10) upper end fixedly connected with electrical heating circle (13), electrical heating circle (13) are located heating chamber (14) surface.
2. The headspace sampler according to claim 1, wherein an air inlet pipe (5) is installed at the input end of the gas chromatograph (2), the other end of the air inlet pipe (5) is fixedly connected with a pressing plate (6), and a sampling needle is movably installed inside the air inlet pipe (5) positioned in the pressing plate (6).
3. A headspace sampler according to claim 2, wherein the output of the gas chromatograph (2) is fitted with a hand valve (17).
4. A headspace sampler according to claim 3, wherein a rack (15) is fixedly connected in the heating chamber (14), a test tube (16) is slidably connected in the rack (15), and the lower end of the test tube (16) is located on the push plate (12).
5. The headspace sampler as claimed in claim 4, wherein an insulating sleeve is fixedly connected to the outside of the conductive support plate (10).
6. The headspace sampler according to claim 5, wherein the inner wall of the heating chamber (3) is fixedly connected with heat insulating cotton.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221124454U true CN221124454U (en) | 2024-06-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |