CN207528695U - A kind of gas chromatographic sampling device - Google Patents
A kind of gas chromatographic sampling device Download PDFInfo
- Publication number
- CN207528695U CN207528695U CN201721825978.7U CN201721825978U CN207528695U CN 207528695 U CN207528695 U CN 207528695U CN 201721825978 U CN201721825978 U CN 201721825978U CN 207528695 U CN207528695 U CN 207528695U
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- China
- Prior art keywords
- sliding block
- syringe
- injection port
- sample introduction
- needle
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Abstract
The utility model discloses a kind of gas chromatographic sampling devices, the injection port and sample introduction needle being set at the top of gas chromatograph, the sample introduction needle includes the pushing hands from top to bottom set gradually, syringe and syringe needle, a support device is provided at the injection port, be provided in the support device for syringe needle by the second pin hole, there are two supporting racks thirty years of age opposite for setting in support device, sliding rail is provided on support frame as described above, the sliding rail slidably connects sliding block, the sliding block is connected with the motor for sliding block to be driven to move up and down, the sliding block other end is connected with the fixed cylinder for fixing syringe, fixed cylinder bottom setting prevent syringe by limiting plectane, it is provided on the limiting plectane and matched first pin hole of the second pin hole.Scheme provided by the utility model is convenient for the depth for entering injection port to each sample introduction needle syringe needle to be adjusted so that experiment favorable reproducibility, accuracy are high.
Description
Technical field
The utility model is related to analysis and detecting instrument equipment technical fields, are filled more particularly, to a kind of gas chromatographic sample introduction
It puts.
Background technology
Gas chromatograph is the important instrument and equipment in chromatography field, is widely used in life science, material science, ring
The fields such as border protection, medical science and food security, since nineteen fifty-five U.S.'s platinum Ai Ermo (PerkinElmer) companies into
Since work(releases First commercial gas chromatograph in the world, by the development of over half a century, gas chromatograph is as existing
For the representative of analytical instrument, it is the most commonly used analytical chemistry methods of every field, pole is played in many assay laboratories
For important role.
The essential structure of gas chromatograph has two parts, i.e. analytic unit and display unit.Analytic unit mainly includes gas
Source and control metering device, sampling device, thermostat and chromatographic column.Display unit mainly includes comparator and automatic recording instrument.
When using gas chromatograph detection sample, rely primarily on staff and carry out hand sampling, and hand sampling just needs to utilize
Microsyringe.In each sample introduction, the depth that the syringe needle of microsyringe enters the injection port of gas chromatograph is consistent, ability
The each group of data successively measured is made to have good reproducibility.Microsyringe is a kind of instrument with longer sample introduction syringe needle.Into
The diameter of sample syringe needle is smaller, and is made using metal material, thus easily occurs bending and deformation.
But existing microsyringe sample introduction needle is generally all longer, when in use, experimenter is needed to estimate sample introduction needle
Into the length of injection port, the length that sample introduction needle enters injection port is caused to be difficult to keep consistent so that the instantaneous gasification journey of sample
Degree differs, so as to cause the poor reproducibility of experiment；In addition, in sample introduction, the axle center line position of injection port is also required to experimenter
Voluntarily range estimation determines that and injection port is minimum, once deviation occurs in range estimation, then sample introduction syringe needle is easy because of non-edge when can lead to sample introduction
The axial line for injection port enters injection port, and touches injection port inner wall so that sample introduction needle head occurs bending and deformation, and leads to sample introduction
There is error in the length that syringe needle is inserted into injection port, influences the reproducibility of each group of data measured after many experiments.It is bent simultaneously
Needle length afterwards shortens, it may not be possible to be inserted into effective heating area or have on the inner stuffing of glass bushing pipe, so as to cause sample
Product can not complete transient evaporation and enter chromatographic column with " plug " type so that the accuracy of experiment is poor.
Invention content
The utility model provides a kind of gas chromatographic sampling device, and micro-sampling is used to solve existing gas chromatograph
The problem of device sample introduction depth cannot be consistent.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is summarized as follows：
A kind of gas chromatographic sampling device, including the injection port being set at the top of gas chromatograph and sample introduction needle, it is described into
Sample needle includes the pushing hands, syringe and the syringe needle that from top to bottom set gradually, and a support device, the branch are provided at the injection port
Be provided on support arrangement for syringe needle by the second pin hole, the central axes of second pin hole are consistent with injection port, the support
Setting is provided with sliding rail, the sliding rail is slided there are two opposite thirty years of age of supporting rack on support frame as described above on device
Sliding block is connected with, the sliding block is connected with the motor for sliding block to be driven to move up and down, and the sliding block other end is connected with to fix
The fixed cylinder of syringe, fixed cylinder bottom setting prevent syringe by limiting plectane, be provided on the limiting plectane with
Matched first pin hole of second pin hole.
Further, the support device includes a supporting table and is used to support the support feet of supporting table, the support
Foot is set to supporting table quadrangle, and support device can be made to be supported well to the device being arranged on and make support
Platform keeps certain distance with injection port, so that subtracting between the syringe needle and injection port of sample introduction needle there are certain buffer distance
The probability that few syringe needle collides with injection port.
Further, at the top of the sliding rail and bottom be both provided with prevent sliding block by block, make on sliding block
The distance of lower movement is restricted, so that the movement of sliding block is more reasonable.
Further, the sliding block is provided with pointer close to sliding rail side, be provided on the sliding rail with
The matched graduation mark of pointer, the depth that personnel easy to operation enter syringe needle injection port carry out more intuitively control so that
Test controllability higher.
Further, the sliding block one end that is connected with fixed cylinder is provided with a card slot, be provided in the fixed cylinder with
The fixture block that card slot is adapted, the fixture block and sliding block are both provided with the threaded hole passed through for screw, are fixed to fixed cylinder
When, first screw is screwed in threaded hole, finally screws on bolt so that fixed cylinder will not shake, while be also convenient for pair
Fixed cylinder is replaced so that it adapts to the sample introduction needle of different size.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：
Sample is pumped into syringe using sample introduction needle, due to the axis of the first pin hole, the second pin hole, fixed cylinder and injection port
Line is consistent, and syringe needle is aligned the first pin hole is inserted into fixed cylinder, and the central axes that can keep syringe needle are consistent with injection port always, avoid
Syringe needle collides with injection port wall；It is put into the syringe lower end after fixed cylinder and is limited disk and block, can not continue to fall, and needle
Head then enters in the second pin hole, starts motor, makes sliding block that fixed cylinder be driven to move downwardly together so that syringe needle enters injection port
It is interior, when the depth of syringe needle entrance reaches depth needed for experiment, motor is closed, sliding block is made to stop movement, so as to reach each reality
Syringe needle enters that injection port depth is consistent when testing, the high purpose of experiment favorable reproducibility, accuracy, while in sliding block folding process,
Fixed cylinder can play syringe good fixed function, and syringe is avoided to shake, and reduce syringe needle and the first pin hole and second
The possibility that pin hole inner wall collides and syringe needle is caused to be bent so that the control for entering injection port depth to syringe needle is more accurate,
Pushing hands is finally pushed, the sample in syringe is sent into from syringe needle in injection port and completes sample introduction, when taking sample introduction needle, first starts electricity
Machine moves up fixed cylinder, after syringe needle completely disengages injection port, closes motor, takes out sample introduction needle, is taking out sample introduction in this way
It, can be to avoid because taking out sample introduction needle along injection port central axes during needle, and feelings that sample introduction needle and injection port inner wall is made to collide
The generation of condition.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model using state structure diagram；
Fig. 3 is the utility model fixed cylinder structure diagram；
Fig. 4 is the utility model graduation mark enlarged structure schematic diagram；
Fig. 5 is the utility model card slot and fixture block structure diagram；
In figure label for：1- gas chromatographs, 2- injection ports, 3- sliding rails, 4- sliding blocks, 5- fixed cylinders, 6- motors, 7-
Supporting rack, 8- supporting tables, 9- support feets, the first pin holes of 10-, the second pin holes of 11-, 12- pushing hands, 13- syringes, 14- syringe needles, 301-
Block, 401- pointers, 402- graduation marks, 403- card slots, 501- fixture blocks, 502- threaded holes, 503- limiting plectanes.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.The reality of the utility model
The mode of applying includes but not limited to the following example.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of gas chromatographic sampling device, including be set to the top of gas chromatograph 1 into
Sample mouth 2 and sample introduction needle, the sample introduction needle include the pushing hands 12, syringe 13 and the syringe needle 14 that from top to bottom set gradually, the sample introduction
Be provided with a support device at mouthfuls 2, be provided in the support device for syringe needle 14 by the second pin hole 11, in support device
Setting is provided with sliding rail 3, the sliding rail 3, which slides, to be connected there are two opposite thirty years of age of supporting rack 7 on support frame as described above 7
Sliding block 4 is connected to, the sliding block 4 is connected with the motor 6 for sliding block 4 to be driven to move up and down, and 4 other end of sliding block is connected with for solid
Determine the fixed cylinder 5 of syringe 13,5 bottom of the fixed cylinder setting prevent syringe 13 by limiting plectane 503, the limiting plectane
It is provided on 503 and the second pin hole 11 matched first pin hole 10, first pin hole 10, the second pin hole 11, fixed cylinder 5
Central axes are consistent with injection port 2.
Operation principle：Sample is pumped into syringe 13 using sample introduction needle, syringe needle 14 is directed at the first pin hole 10 and is inserted into fixation
In cylinder 5,13 lower end of syringe is limited disk and blocks at this time, can not continue to fall, and syringe needle 14 then enters in the second pin hole 11, opens
Dynamic motor 6, makes sliding block 4 that fixed cylinder 5 be driven to move downwardly together so that syringe needle 14 enters in injection port 2, enters when syringe needle 14
When depth reaches depth needed for experiment, motor 6 is closed, sliding block 4 is made to stop movement, finally pushes pushing hands 12, it will be in syringe 13
Sample is sent into injection port 2 from syringe needle 14 and completes sample introduction；When taking sample introduction needle, first start motor 6, move up fixed cylinder 5,
After syringe needle 14 completely disengages injection port 2, motor 6 is closed, takes out sample introduction needle.
Scheme provided in this embodiment can make syringe needle 14 avoid syringe needle 14 always with injection port 2 on same central axes
It is consistent to enter 2 depth of injection port for syringe needle 14 when colliding with 2 wall of injection port, and testing every time, experiment favorable reproducibility, accurate
Degree is high；Simultaneously in 4 folding process of sliding block, fixed cylinder 5 can play good fixed function to syringe 13, and syringe 13 is avoided to send out
It is raw to shake, the possibility that 14 and first pin hole 10 of syringe needle and 11 inner wall of the second pin hole collide and syringe needle 14 caused to be bent is reduced,
So that the control for entering 2 depth of injection port to syringe needle 14 is more accurate；In addition, when taking out sample introduction needle, it can be to avoid because of non-edge
Sample introduction needle is taken out in 2 central axes of injection port, and make that sample introduction needle and 2 inner wall of injection port collide the occurrence of.
Further, the support device includes a supporting table 8 and is used to support the support feet 9 of supporting table 8, the support
Foot 9 is set to 8 four jiaos of supporting table, and support device can be made to be supported well to the device being arranged on and make branch
It supports platform 8 and keeps certain distance with injection port 2, so that there are certain bufferings between the syringe needle 14 of sample introduction needle and injection port 2
Distance reduces the probability that syringe needle 14 collides with injection port 2.
Further, the axle center of 10 and second pin hole 11 of the first pin hole and the axle center of injection port 2 are in same vertical line
On so that syringe needle 14 can enter when falling directed along the central axes of injection port 2, and syringe needle 14 is avoided to occur with 2 wall of injection port
It collides and syringe needle 14 is caused to generate bending so that experimental result is more accurate, and experiment reproducibility is more preferable.
Embodiment 2
It please refers to shown in Fig. 4, is advanced optimized on the basis of a kind of gas chromatographic sampling device described in embodiment 1,
The sliding block 4 is provided with pointer 401 close to 3 side of sliding rail, is provided on the sliding rail 3 and is matched with pointer 401
Graduation mark 402, the depth that personnel easy to operation enter syringe needle 14 injection port 2 carries out more intuitively control so that experiment
Controllability higher.
Further, 3 top of the sliding rail and bottom be both provided with prevent sliding block 4 by block 301, make sliding block
4 distances moved up and down are restricted, so that the movement of sliding block 4 is more reasonable.
Embodiment 3
It please refers to shown in Fig. 5, is advanced optimized on the basis of a kind of gas chromatographic sampling device described in embodiment 1,
The sliding block 4 one end that is connected with fixed cylinder 5 is provided with a card slot 403, is provided in the fixed cylinder 5 and is adapted with card slot 403
Fixture block 501, the fixture block 501 and sliding block 4 are both provided with the threaded hole 502 passed through for screw, are fixed to fixed cylinder 5
When, first screw is screwed in threaded hole 502, finally screws on bolt so that fixed cylinder 5 will not shake, while also side
Just fixed cylinder 5 is replaced so that it adapts to the sample introduction needle of different size.
It is the embodiment of the utility model as described above.The utility model is not limited to the above embodiment, anyone
It should learn the structure change made under the enlightenment of the utility model, it is every that there is same or similar skill with the utility model
Art scheme, each falls within the scope of protection of the utility model.
Claims (5)
1. a kind of gas chromatographic sampling device, including injection port (2) and the sample introduction needle being set at the top of gas chromatograph (1), institute
It states sample introduction needle and includes the pushing hands (12), syringe (13) and the syringe needle (14) that from top to bottom set gradually, which is characterized in that the sample introduction
Be provided with a support device at mouthful (2), be provided in the support device for syringe needle (14) by the second pin hole (11), it is described
With injection port (2) unanimously, there are two supporting racks thirty years of age opposite for setting in the support device for the central axes of second pin hole (11)
(7), sliding rail (3) is provided on support frame as described above (7), the sliding rail (3) slidably connects sliding block (4), the cunning
Block (4) is connected with the motor (6) for sliding block (4) to be driven to move up and down, and sliding block (4) other end is connected with to fix syringe
(13) fixed cylinder (5), fixed cylinder (5) bottom setting prevent syringe (13) by limiting plectane (503), the limiting
The first pin hole (10) matched with the second pin hole (11) is provided on plectane (503).
2. a kind of gas chromatographic sampling device as described in claim 1, which is characterized in that the support device includes a support
Platform (8) and the support feet (9) for being used to support supporting table (8), the support feet (9) are set to supporting table (8) quadrangle.
3. a kind of gas chromatographic sampling device as claimed in claim 1 or 2, which is characterized in that at the top of the sliding rail (3)
And bottom be both provided with prevent sliding block (4) by block (301).
4. a kind of gas chromatographic sampling device as described in claim 1, which is characterized in that the sliding block (4) is close to slip rail
Road (3) side is provided with pointer (401), is provided on the sliding rail (3) and pointer (401) matched graduation mark
(402)。
5. a kind of gas chromatographic sampling device as described in claim 1, which is characterized in that the sliding block (4) and fixed cylinder (5)
Connected one end is provided with a card slot (403), and the fixture block (501) being adapted with card slot (403) is provided on the fixed cylinder (5),
The fixture block (501) and sliding block (4) are both provided with the threaded hole (502) passed through for screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721825978.7U CN207528695U (en) | 2017-12-22 | 2017-12-22 | A kind of gas chromatographic sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721825978.7U CN207528695U (en) | 2017-12-22 | 2017-12-22 | A kind of gas chromatographic sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528695U true CN207528695U (en) | 2018-06-22 |
Family
ID=62576707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721825978.7U Expired - Fee Related CN207528695U (en) | 2017-12-22 | 2017-12-22 | A kind of gas chromatographic sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207528695U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871925A (en) * | 2018-07-26 | 2018-11-23 | 延边大学 | A kind of air-flowing type quantifies concentrated sample introduction device and method |
| CN109126204A (en) * | 2018-10-15 | 2019-01-04 | 兰州东立龙信息技术有限公司 | A kind of chromatographic column sample introduction needle guiding device |
| CN109752475A (en) * | 2019-02-27 | 2019-05-14 | 辽东学院 | A kind of gas-chromatography glass liner tube structure |
-
2017
- 2017-12-22 CN CN201721825978.7U patent/CN207528695U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871925A (en) * | 2018-07-26 | 2018-11-23 | 延边大学 | A kind of air-flowing type quantifies concentrated sample introduction device and method |
| CN109126204A (en) * | 2018-10-15 | 2019-01-04 | 兰州东立龙信息技术有限公司 | A kind of chromatographic column sample introduction needle guiding device |
| CN109126204B (en) * | 2018-10-15 | 2023-11-03 | 兰州东立龙信息技术有限公司 | Chromatographic column sampling needle guiding device |
| CN109752475A (en) * | 2019-02-27 | 2019-05-14 | 辽东学院 | A kind of gas-chromatography glass liner tube structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20201222 |