CN201859140U - Sample injection device of liquid phase automatic sample injector - Google Patents
Sample injection device of liquid phase automatic sample injector Download PDFInfo
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- CN201859140U CN201859140U CN2010205403608U CN201020540360U CN201859140U CN 201859140 U CN201859140 U CN 201859140U CN 2010205403608 U CN2010205403608 U CN 2010205403608U CN 201020540360 U CN201020540360 U CN 201020540360U CN 201859140 U CN201859140 U CN 201859140U
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- sample
- sample introduction
- injection port
- liquid phase
- introduction needle
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Abstract
The utility model discloses a sample injection device of a liquid phase automatic sample injector, which comprises a quantitative needle tube, an electric sample injection valve connected with a chromatographic column, a sample injection needle, and a cleaning bottle, wherein the sample injection needle is used for sucking a sample in a sample bottle; the electric sample injection valve is connected with a sample inlet unit into which the sample is directly injected by the sample injection needle. In the utility model, after the sample injection needle sucks the sample in the sample bottle, a syringe is directly moved to the sample inlet unit, and then the sample inlet unit can directly convey the sample to the chromatographic column; in the whole sample injection process, the higher precision and accuracy can be achieved; simultaneously, only required sample volume needs to be sucked, and the sample does not need to pass through a sample loop and the waste of the unnecessary sample is not generated, thereby, the working efficiency is greatly improved and the stability is high; simultaneously, the sample inlet unit is arranged so that the cross contamination can be effectively avoided.
Description
Technical field
The utility model relates to a kind of sampling device in the input chromatographic system that sample is accurately stable, be a kind of liquid phase automatic sampler sampling device specifically, this device is the core of liquid phase automatic sampler, is the basis of automatic sampler sample introduction accuracy and stability.
Background technology
In traditional liquid chromatography instrument, generally all dispose the hand sampling valve, in order to guarantee the favorable reproducibility of sample introduction, need the quantity tube of configuration respective volume, different sampling volumes needs to change corresponding quantity tube, and this need waste a large amount of time, need higher expense simultaneously, also caused the automatization level of whole instrument lower.Given this, abroad each big producer has designed all kinds of automatic samplers, is suction-type by its principle major part, as shown in Figure 1.In the suction-type automatic sampler, it comprises that isolation valve 5 ' and waste liquid bottle 6 ', washer bottle 7 ' connect electrokinetic injection valve 8 ' etc., syringe 3 ' is connected the sewer pipe floss hole, sampling needle 1 ' and corresponding pipeline are connected and are connected in sample introduction bottle 2 ', pin inserts in the sample introduction bottle 2 ', then syringe 3 ' resorption is full of sample loop 4 ' wholly or in part up to sample, and rotor rotates sample feeding.This design is very simple, but waste sample very, sample is before entering sample loop, at first must be full of sampling needle and the pipeline that links to each other, cause the sample of 10～100uL to be wasted, need between sample bottle, place the cleaning device of a washer bottle simultaneously, and be not easy thorough cleaning, cause cross pollution easily.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art automatic sampler, provides a kind of and raise the efficiency, reduce the liquid phase automatic sampler sampling device of sample introduction cross pollution, good stability.
Goal of the invention of the present utility model is achieved in that a kind of liquid phase automatic sampler sampling device, comprise quantitative needle tubing, be used to connect the electrokinetic injection valve of chromatographic column, sample introduction needle and the washer bottle that is used in sample bottle drawing sample, it is characterized in that: be connected with the injection port unit that directly injects sample on the described electrokinetic injection valve by sample introduction needle.
For the further refinement of above-mentioned liquid phase automatic sampler sampling device, described injection port unit comprises the injection port pedestal, and the injection port pedestal is provided with sample introduction needle linkage unit and the catheter linkage unit that is interconnected.
In the technique scheme, described injection port pedestal has by next door, middle part upper chamber and lower cavity at interval, the sample introduction needle linkage unit is installed in the upper chamber of injection port pedestal, the catheter linkage unit is installed in the lower cavity of injection port pedestal, and the next door, middle part that the catheter linkage unit passes the injection port pedestal is communicated with the sample introduction needle unit.
According to aforesaid liquid phase automatic sampler sampling device, described sample introduction needle linkage unit comprises sample introduction conduit and sample introduction needle sealing gasket, the upper chamber of sample introduction conduit and injection port pedestal is for being threaded, the sample introduction needle sealing gasket is located between the next door, middle part of sample introduction conduit and injection port pedestal, the sample introduction conduit is pressed in the sample introduction needle sealing gasket on the next door, middle part, have the duct channelization hole on the sample introduction conduit, have pod apertures in the pad on the sample introduction needle sealing gasket, the upper end of pod apertures is communicated with the duct channelization hole in the pad, and the bottom of pod apertures is communicated with the catheter linkage unit in the pad.
In the above-mentioned sample introduction needle linkage unit structure, the top of described sample introduction conduit is provided with conical pilot hole, and conical pilot hole is communicated with the duct channelization hole.
According to aforesaid liquid phase automatic sampler sampling device, described catheter linkage unit comprises clamping nut and catheter, the lower cavity of clamping nut and injection port pedestal is for being threaded, the next door, middle part of clamping nut and injection port pedestal is provided with sealing sword ring, clamping nut is pressed in sealing sword ring on the next door, middle part, and catheter passes clamping nut and is connected on the bottom of pod apertures in the pad with sealing sword ring.
Be connected for the conical surface between further perfect for technique scheme, described clamping nut and sealing sword ring.
During this time, at liquid phase automatic sampler sampling device described in the utility model, be provided with the electromagnetic isolation valve between described sample introduction needle and the quantitative needle tubing, sample introduction needle all directly is connected with the electromagnetic isolation valve by pipeline respectively with quantitative needle tubing.
The utility model is compared with liquid phase suction-type automatic sampler in the prior art, has the following advantages:
The utility model is connected with the injection port unit that is directly injected sample by sample introduction needle on sampling valve, and, the injection port unit can be made up of the sample introduction needle linkage unit and the catheter linkage unit that are arranged on the injection port pedestal, direct syringe moves to the injection port unit sample introduction needle is drawn sample in sample bottle after, the injection port unit can be directly with the sample delivery chromatographic column, in whole sample introduction process, can reach very high precision and accuracy, only need to suck required sample volume simultaneously, sample need not through sample loop, there is not the waste of unnecessary sample, improved work efficiency greatly, good stability, simultaneously, owing to be provided with the injection port unit, section has effectively avoided cross pollution.
Description of drawings
Accompanying drawing 1 is the structural representation of suction-type automatic sampler in the prior art.
Accompanying drawing 2 is the structural representation of the utility model most preferred embodiment.
Accompanying drawing 3 is the sectional structure chart of the real described injection port of the utility model unit.
Accompanying drawing 4 is the structure outside drawing of injection port pedestal in the real described injection port of the utility model unit.
Accompanying drawing 5 is the structure outside drawing of the real described injection port of the utility model unit.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
Extremely shown in Figure 5 according to Fig. 2, liquid phase automatic sampler sampling device described in the utility model, it is optimized traditional suction-type automatic sampler, it comprises quantitative needle tubing 1, electrokinetic injection valve 2, sample introduction needle 4 and washer bottle 5, sample introduction needle 4 is used for drawing sample in sample bottle 3, electrokinetic injection valve 2 be connected chromatographic column and pump, electrokinetic injection valve 2 is used for sample introduction sample is delivered to chromatographic column, washer bottle 5 then is used for sample introduction needle 4 is cleaned.The utility model is in order to overcome the deficiencies in the prior art part, on described electrokinetic injection valve 2, be connected with the injection port unit that directly injects sample by sample introduction needle 4, the sample that sample introduction needle 4 is drawn directly is transported to electrokinetic injection valve 2 by the injection port unit, be transported in the chromatographic column then, in structure described in the utility model, be provided with electromagnetic isolation valve 9 between sample introduction needle 4 and the quantitative needle tubing 1, sample introduction needle 4 all directly is connected with electromagnetic isolation valve 9 by pipeline respectively with quantitative needle tubing 1, detailed structure of the present utility model, as shown in Figure 2.
In the utility model, the injection port unit plays decisive role to whole sample introduction result's reliability, this injection port unit comprises injection port pedestal 6, injection port pedestal 6 is provided with sample introduction needle linkage unit 7 and the catheter linkage unit 8 that is interconnected, the contour structures of sample introduction needle linkage unit 7, as shown in Figure 5.Described injection port pedestal 6 has by next door, middle part 61 upper chamber 62 and lower cavity 63 at interval, as shown in Figure 4, sample introduction needle linkage unit 7 is installed in the upper chamber 62 of injection port pedestal 6, catheter linkage unit 8 is installed in the lower cavity 63 of injection port pedestal 6, and the next door, middle part 61 that catheter linkage unit 8 passes injection port pedestal 6 is communicated with sample introduction needle linkage unit 7.
Referring to accompanying drawing 3, above-mentioned sample introduction needle linkage unit 7 comprises sample introduction conduit 71 and sample introduction needle sealing gasket 72, the upper chamber 62 of sample introduction conduit 71 and injection port pedestal 6 is for being threaded, sample introduction needle sealing gasket 72 is located between the next door, middle part 61 of sample introduction conduit 71 and injection port pedestal 6, sample introduction conduit 71 is pressed in sample introduction needle sealing gasket 72 on the next door 61, middle part, have duct channelization hole 711 on the conduit sample introduction conduit 71, have pod apertures 721 in the pad on the sample introduction needle sealing gasket 72, the upper end of pod apertures 721 is communicated with duct channelization hole 711 in the pad, and the bottom of pod apertures 721 is communicated with catheter linkage unit 8 in the pad.In technical solutions of the utility model, the material that described sample introduction needle sealing gasket 72 is adopted need have the resistance to pressure height, and resistance to chemical attack, friction factor are little, in the concrete manufacturing is to select a kind of polymer composite to make.During this time, the top of described sample introduction conduit 71 is provided with conical pilot hole 712, conical pilot hole 712 is communicated with duct channelization hole 711, and taper guiding is guaranteed sample introduction needle 4 each all centerings and inserted pod apertures 721 in the pad of sealing gasket perpendicular to the direction of sample introduction needle sealing gasket 72.And when screwing sample introduction conduit 71, sample introduction needle sealing gasket 72 lower surfaces fully contact with injection port pedestal 6, guarantee the liquid that can not leakage, simultaneously because radial effect, the dwindling gradually of its bore design more can be helped coincideing to 4 pairs of outer walls of sample introduction needle in the bottom of sample introduction needle sealing gasket 72.
Simultaneously, as shown in Figure 3, described catheter linkage unit 8 comprises clamping nut 81 and catheter 82, the lower cavity 63 of clamping nut 81 and injection port pedestal 6 is for being threaded, clamping nut 81 is provided with sealing sword ring 83 with the next door, middle part 61 of injection port pedestal 6, clamping nut 81 is pressed in sealing sword ring 83 on the next door 61, middle part, and catheter 82 passes clamping nut 81 and is connected on the bottom of pod apertures 721 in the pad with sealing sword ring 83; And, be connected for the conical surface between clamping nut 81 and the sealing sword ring 83.When screwing clamping nut 81, because clamping nut 81 and the special cone match structure of sword ring, revolve tightly more, it is tight more that sealing sword ring 83 sticks tube wall, guarantees that liquid that can not leaks, and guaranteed zero dead volume (having reduced the waste and the cross pollution of sample) simultaneously again.
For this reason, the utility model is by being connected with the injection port unit that is directly injected sample by sample introduction needle 4 on sampling valve, direct syringe moves to the injection port unit sample introduction needle 4 is drawn sample in sample bottle 3 after, the injection port unit can be directly with the sample delivery chromatographic column, in whole sample introduction process, can reach very high precision and accuracy, only need to suck required sample volume simultaneously, sample need not do not have the waste of unnecessary sample through sample loop, has improved work efficiency greatly, good stability, simultaneously, owing to be provided with the injection port unit, section has effectively avoided cross pollution.
Claims (8)
1. liquid phase automatic sampler sampling device, comprise quantitative needle tubing (1), be used to connect the electrokinetic injection valve (2) of chromatographic column, sample introduction needle (4) and the washer bottle (5) that is used in sample bottle (3) drawing sample, it is characterized in that: be connected with the injection port unit that directly injects sample on the described electrokinetic injection valve (2) by sample introduction needle (4).
2. liquid phase automatic sampler sampling device according to claim 1 is characterized in that: described injection port unit comprises injection port pedestal (6), and injection port pedestal (6) is provided with sample introduction needle linkage unit (7) and the catheter linkage unit (8) that is interconnected.
3. liquid phase automatic sampler sampling device according to claim 2, it is characterized in that: described injection port pedestal (6) has by next door, middle part (61) upper chamber (62) and lower cavity (63) at interval, sample introduction needle linkage unit (7) is installed in the upper chamber (62) of injection port pedestal (6), catheter linkage unit (8) is installed in the lower cavity (63) of injection port pedestal (6), and the next door, middle part (61) that catheter linkage unit (8) passes injection port pedestal (6) is communicated with sample introduction needle (4) unit.
4. liquid phase automatic sampler sampling device according to claim 3, it is characterized in that: described sample introduction needle linkage unit (7) comprises sample introduction conduit (71) and sample introduction needle sealing gasket (72), the upper chamber (62) of sample introduction conduit (71) and injection port pedestal (6) is for being threaded, sample introduction needle sealing gasket (72) is located between the next door, middle part (61) of sample introduction conduit (71) and injection port pedestal (6), sample introduction conduit (71) is pressed in sample introduction needle sealing gasket (72) on the next door, middle part (61), have duct channelization hole (711) on the sample introduction conduit (71), have pod apertures (721) in the pad on the sample introduction needle sealing gasket (72), the upper end of pod apertures (721) is communicated with duct channelization hole (711) in the pad, and the bottom of pod apertures (721) is communicated with catheter linkage unit (8) in the pad.
5. liquid phase automatic sampler sampling device according to claim 4 is characterized in that: the top of described sample introduction conduit (71) is provided with conical pilot hole (712), and conical pilot hole (712) is communicated with duct channelization hole (711).
6. liquid phase automatic sampler sampling device according to claim 4, it is characterized in that: described catheter linkage unit (8) comprises clamping nut (81) and catheter (82), the lower cavity (63) of clamping nut (81) and injection port pedestal (6) is for being threaded, clamping nut (81) is provided with sealing sword ring (83) with the next door, middle part (61) of injection port pedestal (6), clamping nut (81) is pressed in sealing sword ring (83) on middle part next door (61), and catheter (82) passes clamping nut (81) and sealing sword ring (83) and is connected on the bottom of the interior pod apertures (721) of pad.
7. liquid phase automatic sampler sampling device according to claim 6 is characterized in that: be connected for the conical surface between described clamping nut (81) and sealing sword ring (83).
8. liquid phase automatic sampler sampling device according to claim 1, it is characterized in that: be provided with electromagnetic isolation valve (9) between described sample introduction needle (4) and the quantitative needle tubing (1), sample introduction needle (4) all directly is connected with electromagnetic isolation valve (9) by pipeline respectively with quantitative needle tubing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205403608U CN201859140U (en) | 2010-09-19 | 2010-09-19 | Sample injection device of liquid phase automatic sample injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205403608U CN201859140U (en) | 2010-09-19 | 2010-09-19 | Sample injection device of liquid phase automatic sample injector |
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| CN201859140U true CN201859140U (en) | 2011-06-08 |
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| CN2010205403608U Expired - Lifetime CN201859140U (en) | 2010-09-19 | 2010-09-19 | Sample injection device of liquid phase automatic sample injector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841194A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Novel hand-operated sample introduction needle |
| CN102879505A (en) * | 2011-07-11 | 2013-01-16 | 株式会社岛津制作所 | Needle adaptor and automatic sampler using the same |
| CN103901144A (en) * | 2012-12-28 | 2014-07-02 | 株式会社岛津制作所 | Automatic sampler |
| CN103930779A (en) * | 2011-11-11 | 2014-07-16 | 积水医疗株式会社 | Sample injection device for biochemical analysis, flow-type biochemical analysis device, and measurement method for hemoglobin component |
| CN106770848A (en) * | 2017-01-19 | 2017-05-31 | 浙江福立分析仪器股份有限公司 | A kind of liquid chromatogram automatic sampler and its injection port auto-correction method |
| CN111735890A (en) * | 2020-08-25 | 2020-10-02 | 苏州创新通用色谱仪器有限公司 | Full-automatic mass spectrum pretreatment system |
-
2010
- 2010-09-19 CN CN2010205403608U patent/CN201859140U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841194A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Novel hand-operated sample introduction needle |
| CN102879505A (en) * | 2011-07-11 | 2013-01-16 | 株式会社岛津制作所 | Needle adaptor and automatic sampler using the same |
| CN102879505B (en) * | 2011-07-11 | 2014-12-24 | 株式会社岛津制作所 | Needle adaptor and automatic sampler using the same |
| US9194846B2 (en) | 2011-07-11 | 2015-11-24 | Shimadzu Corporation | Needle adaptor and automatic sampler using the same |
| CN103930779A (en) * | 2011-11-11 | 2014-07-16 | 积水医疗株式会社 | Sample injection device for biochemical analysis, flow-type biochemical analysis device, and measurement method for hemoglobin component |
| CN103930779B (en) * | 2011-11-11 | 2016-02-24 | 积水医疗株式会社 | The measuring method of the sample injection device of biochemical analysis, streaming biochemical analyser and hemoglobin components |
| CN103901144A (en) * | 2012-12-28 | 2014-07-02 | 株式会社岛津制作所 | Automatic sampler |
| CN103901144B (en) * | 2012-12-28 | 2015-08-12 | 株式会社岛津制作所 | Automatic sampler |
| CN106770848A (en) * | 2017-01-19 | 2017-05-31 | 浙江福立分析仪器股份有限公司 | A kind of liquid chromatogram automatic sampler and its injection port auto-correction method |
| CN106770848B (en) * | 2017-01-19 | 2018-10-12 | 浙江福立分析仪器股份有限公司 | A kind of liquid chromatogram autosampler and its injection port auto-correction method |
| CN111735890A (en) * | 2020-08-25 | 2020-10-02 | 苏州创新通用色谱仪器有限公司 | Full-automatic mass spectrum pretreatment system |
| CN111735890B (en) * | 2020-08-25 | 2020-12-15 | 苏州创新通用色谱仪器有限公司 | Full-automatic mass spectrum pretreatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 317500, No. 95 South Road, Chengdong street, Taizhou, Zhejiang, Wenling Patentee after: Zhejiang analytical instrument Limited by Share Ltd Address before: 317500 Research Park, Wenling Economic Development Zone, Zhejiang Patentee before: Zhejiang Fu Li Analytical Instrument Co., Ltd |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |