CN212180703U - Continuous sample introduction mechanism of gas chromatograph - Google Patents
Continuous sample introduction mechanism of gas chromatograph Download PDFInfo
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- CN212180703U CN212180703U CN202020584265.1U CN202020584265U CN212180703U CN 212180703 U CN212180703 U CN 212180703U CN 202020584265 U CN202020584265 U CN 202020584265U CN 212180703 U CN212180703 U CN 212180703U
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- gas chromatograph
- sampling
- continuous
- sample
- headspace bottle
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- 230000007246 mechanism Effects 0.000 title claims abstract description 53
- 238000005070 sampling Methods 0.000 claims abstract description 85
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Abstract
The utility model discloses a gas chromatograph continuous sampling mechanism, which comprises a body, be equipped with continuous sample feeding mechanism in the organism, continuous sample feeding mechanism is including setting up the cylindric heating cabinet in the organism, the top of heating cabinet is equipped with the sample rotary disk, be equipped with a plurality of headspace bottle grooves that are the annular symmetric distribution on the sample rotary disk, sample rotary disk bottom is equipped with the headspace bottle registration arm that corresponds with headspace bottle groove, be equipped with the ventilation hole on the headspace bottle registration arm, be equipped with a plurality of electric heating pipe in the heating cabinet, be equipped with gear motor in the organism, gear motor's output shaft is connected with the transmission of sample rotary disk through the transmission shaft; and the machine body is provided with a continuous sampling mechanism matched with the continuous sample feeding mechanism. The utility model discloses sustainable carrying out in succession send appearance and sampling, effectively reduced technical staff's adoption working strength to higher adoption efficiency has.
Description
Technical Field
The utility model relates to an experimental apparatus technical field specifically is a gas chromatograph advances kind mechanism in succession.
Background
The gas chromatograph is a chromatographic analysis device using gas as a mobile phase. The principle is mainly to realize the separation of the mixture by utilizing the differences of the boiling point, the polarity and the adsorption property of the substances. After being gasified in the gasification chamber, the sample to be analyzed is carried into the chromatographic column by inert gas (i.e. carrier gas, also called mobile phase), the column contains liquid or solid stationary phase, and each component in the sample tends to form distribution or adsorption equilibrium between the mobile phase and the stationary phase. With the flowing of the carrier gas, the sample components are repeatedly distributed or adsorbed/desorbed in motion for many times, and the components with high distribution concentration in the carrier gas flow out of the chromatographic column firstly, and the components with high distribution concentration in the stationary phase flow out after being distributed. The components flow out of the column and into the detector for measurement, and commonly used detectors include Electron Capture Detectors (ECD), hydrogen flame detectors (FID), Flame Photometric Detectors (FPD), Thermal Conductivity Detectors (TCD), and the like. At present, because the cost of manual sample injection is low, the operation is simple, even a new person can also operate, the method of manual sample injection is usually adopted for the sample injection of the conventional chromatographic sample, a detector holds an injector by one hand, protects a needle point by the other hand, penetrates an injection needle through a spacer, randomly inserts the injector to the bottom at the fastest speed, rapidly injects the sample into a gasification chamber, and then rapidly extracts the injector. However, when manual sampling is performed, detection personnel are easy to fatigue after long-time operation, so that the sampling speed is reduced, and the sampling efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
For solving the defect that prior art exists, the utility model provides a gas chromatograph advances kind mechanism in succession.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a gas chromatograph continuous sampling mechanism, which comprises a body, be equipped with continuous sample feeding mechanism in the organism, continuous sample feeding mechanism is including setting up the cylindric heating cabinet in the organism, the top of heating cabinet is equipped with the sample rotary disk, be equipped with a plurality of headspace bottle grooves that are the annular symmetric distribution on the sample rotary disk, sample rotary disk bottom is equipped with the headspace bottle registration arm that corresponds with headspace bottle groove, be equipped with the ventilation hole on the headspace bottle registration arm, be equipped with a plurality of electric heating pipe in the heating cabinet, be equipped with gear motor in the organism, the output shaft of gear motor is connected with the transmission of sample rotary disk through the transmission shaft; be equipped with on the organism with send appearance mechanism complex continuous sampling mechanism in succession, continuous sampling mechanism is including setting up the L type locating rack on the organism, be equipped with vertical decurrent telescopic cylinder on the L type locating rack, telescopic cylinder's top is equipped with the elevator block that is located headspace bottle groove top, be fixed with the gas chromatograph sampling head on the elevator block, be equipped with the sampling needle pipe on the gas chromatograph sampling head.
As an optimal technical scheme of the utility model, be equipped with stop gear between elevator block and the L type locating rack, stop gear is including setting up at the elevator block top and vertical ascending spacing slide bar, L type locating rack is equipped with the stop sleeve who supplies spacing slide bar to pass.
As a preferred technical scheme of the utility model, the top of sampling head is equipped with head space bottle positioning mechanism, head space bottle positioning mechanism is including setting up the bottom block on the sampling head, the below of bottom block is equipped with the position circle, be equipped with vertical gag lever post on the position circle, be equipped with the spacing through-hole that supplies the gag lever post to pass on the bottom block, be equipped with expanding spring between position circle and the bottom block, expanding spring wears to establish on the gag lever post, the position circle is located the below of sampling needle tubing, and is equipped with the through-hole that supplies the sampling needle tubing to pass on the position circle.
As an optimized technical scheme of the utility model, the bottom of position circle is equipped with the cushion rubber layer.
As an optimized technical scheme of the utility model, the angle that the sample rotary disk rotated at every turn is certain.
As an optimized technical scheme of the utility model, be equipped with thermal-insulated rock wool layer on the inner wall of heating cabinet.
The utility model has the advantages that: the continuous sample introduction mechanism of the gas chromatograph is characterized in that a headspace bottle containing a sample is required to be placed in a headspace bottle groove on a rotating disc when the continuous sample introduction mechanism is used, the headspace bottle containing the sample is supported and positioned by a headspace bottle positioning tube, so that the headspace bottle is positioned in an inner cavity of a heating box, the sample in the headspace bottle is convenient to heat, when the sample in the headspace bottle is sampled, the headspace bottle is conveyed to the position right below a gas chromatograph sampling head through the rotation of a sample rotating disc, then a telescopic cylinder extends to drive the gas chromatograph sampling head to move downwards, a sampling needle tube on the gas chromatograph sampling head is used for puncturing a rubber plug at the top of the headspace bottle, the sample in the headspace bottle is conveyed into the gas chromatograph, the telescopic cylinder resets after the sampling is completed, the headspace bottle is separated from the headspace bottle on the gas chromatograph sampling head, and then a speed reduction motor drives the sample rotating disc to rotate, the headspace bottle that will not be adopted transports to under the gas chromatograph sampling head, and then telescopic cylinder extends, drives the downstream of gas chromatograph sampling head, utilizes the sampling needle tubing on the gas chromatograph sampling head to advance the puncture to the rubber stopper at headspace bottle top, samples to the realization advances kind work to gas chromatograph's continuous sampling.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a continuous sample feeding mechanism of a gas chromatograph of the present invention;
fig. 2 is a schematic structural diagram of a continuous sampling mechanism of a continuous sample feeding mechanism of a gas chromatograph according to the present invention;
fig. 3 is a schematic structural view of a limit slide rod of a continuous sample feeding mechanism of a gas chromatograph of the present invention;
fig. 4 is a schematic structural diagram of a sample rotating disk of a continuous sample feeding mechanism of a gas chromatograph of the present invention.
In the figure: 1. a body; 2. a continuous sample feeding mechanism; 3. a heating box; 4. a sample rotating disc; 5. A headspace bottle slot; 6. a headspace bottle positioning tube; 7. a vent hole; 8. a reduction motor; 9. a continuous sampling mechanism; 10. an L-shaped positioning frame; 11. a telescopic cylinder; 12. a lifting block; 13. a sampling head; 14. sampling a needle tube; 15. sampling an air pipe; 16. a limiting slide bar; 17. a limiting sleeve; 18. A headspace bottle positioning mechanism; 19. a bottom block; 20. positioning rings; 21. a limiting rod; 22. a limiting through hole; 23. a tension spring; 24. heating the tube.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the utility model relates to a gas chromatograph continuous sampling mechanism, including organism 1, be equipped with continuous sampling mechanism 2 in the organism 1, continuous sampling mechanism 2 is including setting up the cylindric heating cabinet 3 in organism 1, the top of heating cabinet 3 is equipped with sample rotary disk 4, be equipped with a plurality of headspace bottle grooves 5 that are the annular symmetric distribution on the sample rotary disk 4, the sample rotary disk 4 bottom is equipped with headspace bottle positioning tube 6 corresponding with headspace bottle groove 5, be equipped with ventilation hole 7 on the headspace bottle positioning tube 6, be equipped with a plurality of electric heating pipes 24 in the heating cabinet 3, be equipped with gear motor 8 in the organism 1, the output shaft of gear motor 8 is connected with sample rotary disk 4 transmission through the transmission shaft; the continuous sampling mechanism 9 matched with the continuous sample feeding mechanism 2 is arranged on the machine body 1, the continuous sampling mechanism 9 comprises an L-shaped positioning frame 10 arranged on the machine body 1, a vertical downward telescopic cylinder 11 is arranged on the L-shaped positioning frame 10, a lifting block 12 positioned above a headspace bottle groove 5 is arranged at the top of the telescopic cylinder 11, a gas chromatograph sampling head 13 is fixed on the lifting block 12, a sampling needle tube 14 is arranged on the gas chromatograph sampling head 13, when the continuous sampling mechanism is used, a headspace bottle filled with a sample is required to be placed in the headspace bottle groove 5 on the rotating disc, the headspace bottle filled with the sample is supported and positioned by using a headspace bottle positioning tube 6, so that the headspace bottle is positioned in an inner cavity of the heating box 3, the sample in the headspace bottle is convenient to be heated, when the sample in the headspace bottle is collected, the headspace bottle is conveyed to be under the gas sampling head 13 by rotating the sample rotating disc 4, then telescopic cylinder 11 extends, drive gas chromatograph sampling head 13 downstream, utilize sampling needle tubing 14 on gas chromatograph sampling head 13 to advance the puncture to the rubber stopper at headspace bottle top, carry the sample in the headspace bottle to the gas chromatograph, telescopic cylinder 11 resets after the adoption is accomplished, make gas chromatograph sampling head 13 go up sampling needle tubing 14 to the separation of headspace bottle and headspace bottle, then gear motor 8 drive sample rotary disk 4 rotates, transport the headspace bottle that will not be adopted to the gas chromatograph sampling head 13 directly under, then telescopic cylinder 11 extends, drive gas chromatograph sampling head 13 downstream, utilize sampling needle tubing 14 on gas chromatograph sampling head 13 to advance the puncture to the rubber stopper at headspace bottle top, sample, thereby realize the continuous sampling work to the gas chromatograph.
A limiting mechanism is arranged between the lifting block 12 and the L-shaped positioning frame 10, the limiting mechanism comprises a vertical upward limiting slide rod 16 arranged at the top of the lifting block 12, and the L-shaped positioning frame 10 is provided with a limiting sleeve 17 for the limiting slide rod 16 to pass through.
Wherein, the top of sampling head 13 is equipped with head space bottle positioning mechanism 18, head space bottle positioning mechanism 18 is including setting up the bottom block 19 on the sampling head 13, the below of bottom block 19 is equipped with position circle 20, be equipped with vertical gag lever post 21 on the position circle 20, be equipped with the spacing through-hole 22 that supplies gag lever post 21 to pass on the bottom block 19, be equipped with expanding spring 23 between position circle 20 and the bottom block 19, expanding spring 23 wears to establish on gag lever post 21, position circle 20 is located the below of sampling needle tubing 14, and is equipped with the through-hole that supplies sampling needle tubing 14 to pass on the position circle 20, and when sampling needle tubing 14 punctured the head space bottle, position circle 20 earlier with the top contact of head space bottle to along with gas chromatograph sampling head 13's pushing down, under expanding spring 23's elasticity, position circle 20 closely contradicts with the top of head space bottle, then sampling needle tubing 14 punctures the head space bottle, the bending of the sampling needle tube 14 caused by the shaking of the headspace bottle in the puncture process is effectively avoided.
Wherein, the bottom of position circle 20 is equipped with the cushion rubber layer, plays the effect of protection to the overhead bottle.
The angle of each rotation of the sample rotating disc 4 is certain, wherein six headspace bottle grooves 5 are arranged on the sample rotating disc 4, the angle of each rotation of the sample rotating disc 4 is sixty degrees, when 8 headspace bottle grooves 5 are arranged on the sample rotating disc 4, the angle of each rotation of the sample rotating disc 4 is 45 degrees, the angle of each rotation of the sample rotating disc 4 is related to the number of the headspace bottle grooves 5, and the requirement that the angle A of each rotation of the sample rotating disc 4 is equal to the circumferential angle 360 divided by the number n of the headspace bottle grooves 5 formed on the sample rotating disc 4 is met, so that the sampling head 13 of the gas chromatograph and the headspace bottles are always in a relative position state, and the sampling of the headspace bottles is convenient.
The inner wall of the heating box 3 is provided with a heat insulation rock wool layer which plays a role in heat insulation and heat preservation
The working principle is as follows: the utility model discloses in the use need place the headspace bottle that is equipped with the sample in headspace bottle groove 5 on the rotary disk, and utilize headspace bottle registration arm 6 to carry the location to the headspace bottle that is equipped with the sample, make the headspace bottle be in the inner chamber in heating cabinet 3, be convenient for heat the sample in the headspace bottle, when adopting the sample in the headspace bottle, transport the headspace bottle to under gas chromatograph sampling head 13 through sample rotary disk 4 rotation, then telescopic cylinder 11 extends, drive gas chromatograph sampling head 13 downstream, utilize the sampling needle tubing 14 on gas chromatograph sampling head 13 to advance the puncture to the rubber stopper at headspace bottle top, carry the sample in the headspace bottle to the gas chromatograph, telescopic cylinder 11 resets after adopting and accomplishing, make gas chromatograph sampling head 13 go up sampling needle tubing 14 and separate headspace bottle and headspace bottle, then gear motor 8 drives sample rotary disk 4 and rotates, the headspace bottle that will not be adopted transports to gas chromatograph sampling head 13 under, then telescopic cylinder 11 extends, drives gas chromatograph sampling head 13 downstream, utilizes sampling needle tubing 14 on gas chromatograph sampling head 13 to advance the puncture to the rubber stopper at headspace bottle top, samples to the realization advances kind work to gas chromatograph's continuous sampling.
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 may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a gas chromatograph advances a kind mechanism in succession which characterized in that: the continuous sample feeding device comprises a machine body (1), wherein a continuous sample feeding mechanism (2) is arranged in the machine body (1), the continuous sample feeding mechanism (2) comprises a cylindrical heating box (3) arranged in the machine body (1), a sample rotating disc (4) is arranged at the top of the heating box (3), a plurality of top empty bottle grooves (5) which are symmetrically distributed in a ring shape are formed in the sample rotating disc (4), a top empty bottle positioning tube (6) corresponding to the top empty bottle grooves (5) is arranged at the bottom of the sample rotating disc (4), a ventilation hole (7) is formed in the top empty bottle positioning tube (6), a plurality of electric heating tubes (24) are arranged in the heating box (3), a speed reducing motor (8) is arranged in the machine body (1), and an output shaft of the speed reducing motor (8) is in transmission connection with the sample rotating disc (4) through a transmission shaft; be equipped with on organism (1) with send appearance mechanism (2) complex continuous sampling mechanism (9) in succession, continuous sampling mechanism (9) is including setting up L type locating rack (10) on organism (1), be equipped with vertical decurrent telescopic cylinder (11) on L type locating rack (10), the top of telescopic cylinder (11) is equipped with elevator (12) that are located headspace bottle groove (5) top, be fixed with gas chromatograph sampling head (13) on elevator (12), be equipped with sampling needle (14) on gas chromatograph sampling head (13).
2. The continuous sample feeding mechanism of a gas chromatograph according to claim 1, wherein a limiting mechanism is arranged between the lifting block (12) and the L-shaped positioning frame (10), the limiting mechanism comprises a limiting slide rod (16) which is arranged at the top of the lifting block (12) and faces vertically upwards, and the L-shaped positioning frame (10) is provided with a limiting sleeve (17) for the limiting slide rod (16) to pass through.
3. The continuous sampling mechanism of a gas chromatograph according to claim 1, wherein a headspace bottle positioning mechanism (18) is disposed at the top of the sampling head (13), the headspace bottle positioning mechanism (18) comprises a bottom block (19) disposed on the sampling head (13), a positioning ring (20) is disposed below the bottom block (19), a vertical limiting rod (21) is disposed on the positioning ring (20), a limiting through hole (22) for the limiting rod (21) to pass through is disposed on the bottom block (19), an expansion spring (23) is disposed between the positioning ring (20) and the bottom block (19), the expansion spring (23) is disposed on the limiting rod (21) in a penetrating manner, the positioning ring (20) is disposed below the sampling needle (14), and a through hole for the sampling needle (14) to pass through is disposed on the positioning ring (20).
4. The continuous sampling mechanism of a gas chromatograph according to claim 3, wherein a cushion rubber layer is arranged at the bottom of the positioning ring (20).
5. The continuous sample feeding mechanism of a gas chromatograph according to claim 1, wherein the angle of each rotation of the sample rotating disc (4) is fixed.
6. The continuous sampling mechanism of a gas chromatograph according to claim 1, characterized in that the inner wall of the heating box (3) is provided with a heat-insulating rock wool layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020584265.1U CN212180703U (en) | 2020-04-20 | 2020-04-20 | Continuous sample introduction mechanism of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020584265.1U CN212180703U (en) | 2020-04-20 | 2020-04-20 | Continuous sample introduction mechanism of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212180703U true CN212180703U (en) | 2020-12-18 |
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ID=73767109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020584265.1U Expired - Fee Related CN212180703U (en) | 2020-04-20 | 2020-04-20 | Continuous sample introduction mechanism of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212180703U (en) |
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2020
- 2020-04-20 CN CN202020584265.1U patent/CN212180703U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20201218 |