CN203908854U - Automatic online sample diluting and mixing device - Google Patents
Automatic online sample diluting and mixing device Download PDFInfo
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- CN203908854U CN203908854U CN201420335592.8U CN201420335592U CN203908854U CN 203908854 U CN203908854 U CN 203908854U CN 201420335592 U CN201420335592 U CN 201420335592U CN 203908854 U CN203908854 U CN 203908854U
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Abstract
The utility model provides an automatic online sample diluting and mixing device. The device comprises an injection pump, a first multiposition switch valve, a second multiposition switch valve, a third multiposition switch valve and a mixer, wherein the first multiposition switch valve comprises a first main port and two first switch ports selectively communicated with the first main port; the second multiposition switch valve comprises a second main port and two second switch ports selectively communicated with the second main port; the third multiposition switch valve comprises a third main port and two third switch ports selectively communicated with the third main port; the mixer is provided with a liquid inlet/outlet; the injection pump is connected with the first main port; one first switch port is connected with the second main port; one second switch port is connected with one third switch port; the third main port is connected with the liquid inlet/outlet. The device achieves improvement of the universality of the automatic online sample diluting and mixing device and meets the diluting and mixing requirements of automatic online samples.
Description
Technical field
The utility model relates to chromatographic analysis device, relates in particular to a kind of automatic on-line Sample Dilution mixing arrangement.
Background technology
Chromatograph application chromatography is carried out qualitative and quantitative analysis to material, and the research physics of material is, the instrument of chemical characteristic.Chromatograph in use, generally need to first inject quantitative sample, and then according to extension rate, injects dilution sample is diluted.Generally, after sample mixes with dilution, need to mix processing, in prior art, conventionally adopt following two kinds of modes: mode one, in the mode stirring, sample and dilution be mixed; The mode of mode two, employing bubbling mixes sample and dilution.Above-mentioned two kinds of modes all can mix fully to heavy dose of sample and dilution, yet, dilution for automatic on-line sample mixes, the concentration of component is in ppb ~ ppm level, its sample size is only between 10 ~ 200 μ L, due to the dosage of collected specimens seldom (for example: 300 times of the Sample Dilutions of 10 μ L), self volume of the mixer that it is corresponding is just very little.For mode one, due to the small volume of mixer, have no idea to stir in mixer at all; And for mode two, the restriction bubbling effect that is subject on the one hand mixer space is poor, on the other hand, the contained pollutant of air that bubbling is used will affect the measuring accuracy of sample.As from the foregoing, the poor dilution mixing requirement that cannot meet automatic on-line sample of mixer versatility of the prior art.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of automatic on-line Sample Dilution mixing arrangement is provided, solve the poor dilution that cannot meet automatic on-line sample of mixer versatility in prior art and mix the defect requiring, realize the versatility that improves automatic on-line Sample Dilution mixing arrangement, meet the dilution mixing requirement of automatic on-line sample.
The technical scheme that the utility model provides is that a kind of automatic on-line Sample Dilution mixing arrangement, comprises syringe pump, the first multi-position switching valve, the second multi-position switching valve and mixer; Described the first multi-position switching valve comprises the first master port and two the first port switchings that are communicated with described the first master port selection, described the second multi-position switching valve comprises the second master port and three the second port switchings that are communicated with described the second master port selection, and described mixer has a liquid inlet/outlet; Described syringe pump is connected with described the first master port, and wherein described in one, the first port switching is connected with described the second master port, and wherein described in one, the second port switching is connected with described liquid inlet/outlet.
The utility model also provides a kind of automatic on-line Sample Dilution mixing arrangement, comprises syringe pump, the first multi-position switching valve, the second multi-position switching valve, the 3rd multi-position switching valve and mixer; Described the first multi-position switching valve comprises the first master port and two the first port switchings that are communicated with described the first master port selection, described the second multi-position switching valve comprises the second master port and two the second port switchings that are communicated with described the second master port selection, described the 3rd multi-position switching valve comprises the 3rd master port and two the 3rd port switchings that are communicated with described the 3rd master port selection, and described mixer has a liquid inlet/outlet; Described syringe pump is connected with described the first master port, and wherein described in one, the first port switching is connected with described the second master port, wherein described in one the second port switching with wherein described in one the 3rd port switching be connected, described the 3rd master port is connected with described liquid inlet/outlet.
Further, described mixer comprises mixing tube and waterproof ventilated membrane, is provided with described liquid inlet/outlet and air inlet/outlet on described mixing tube, is provided with described waterproof ventilated membrane on described air inlet/outlet.
Further, described mixer comprises flexible pouch, is provided with described liquid inlet/outlet in described flexible pouch.
The automatic on-line Sample Dilution mixing arrangement that the utility model provides, by adopting syringe pump to dilute, mix, syringe pump plays sample introduction in the course of the work, dilution and three kinds of effects of mixing, for low dose of sample, can extract accurately acquisition by syringe pump, simultaneously, syringe pump also can be set the dilution of multiple accurately to sample, and when mixing, by syringe pump, repeatedly extract and inject, can be so that sample and dilution mix fully, and, in extraction and injection process, to the content of material of mixed liquor itself, can not exert an influence, can effectively meet the requirement that low dose of sample mixes in the mixer of small volume, realize the versatility that improves automatic on-line Sample Dilution mixing arrangement, meet the dilution mixing requirement of automatic on-line sample.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the utility model automatic on-line Sample Dilution mixing arrangement embodiment mono-in sample introduction state;
Fig. 2 is the structural representation of the utility model automatic on-line Sample Dilution mixing arrangement embodiment mono-in diluted state;
Fig. 3 is the structural representation of the utility model automatic on-line Sample Dilution mixing arrangement embodiment mono-in admixture;
Fig. 4 is the structural representation of the utility model automatic on-line Sample Dilution mixing arrangement embodiment bis-;
Fig. 5 is the structural representation of mixer in the utility model automatic on-line Sample Dilution mixing arrangement.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
As shown in Figure 1, the present embodiment automatic on-line Sample Dilution mixing arrangement, comprises syringe pump 1, the first multi-position switching valve 2, the second multi-position switching valve 3, the 3rd multi-position switching valve 5 and mixer 4; The first multi-position switching valve comprises the first master port 21 and two the first port switchings 22,23 that are communicated with the first master port 21 selections, the second multi-position switching valve 3 comprises the second master port 31 and two the second port switchings 32,33 that are communicated with the second master port 31 selections, the 3rd multi-position switching valve 5 comprises the 3rd master port 51 and two the 3rd port switchings 52,53 that are communicated with the 3rd master port 51 selections, and mixer 4 has a liquid inlet/outlet 41; Syringe pump 1 is connected with the first master port 21, and wherein one first port switching 23 is connected with the second master port 31, and wherein one second port switching 33 is connected with one the 3rd port switching 52 wherein, and the 3rd master port 51 is connected with liquid inlet/outlet 41.
Particularly, the present embodiment automatic on-line Sample Dilution mixing arrangement adopts syringe pump 1 draw samples and dilution, the controller of syringe pump 1 sends pulse and makes the rotation of device stepper motor, and stepper motor drives the screw mandrel of syringe pump 1 to rotatablely move to become rectilinear motion, to promote the piston of syringe in syringe pump 1, carry out constant motion, thereby realized high precision, pulseless fluid transport.Syringe pump 1 in the present embodiment has three kinds of functions: sample introduction, dilution and mixing.Concrete, first, as shown in Figure 1, the first master port 21 and being communicated with the first port switching 22, syringe pump 1 can be by the quantitative sample of the first port switching 22 extraction; Then, as shown in Figure 2, syringe pump 1 extracts a certain amount of dilution by the first port switching 22 again sample is diluted; Finally, as shown in Figure 3, the first master port 21 and being communicated with the first port switching 23, the second master port 31 is communicated with the second port switching 33, the 3rd master port 51 and the 3rd port switching 52 are communicated with, and the sample that syringe pump 1 obtains its inner extraction and the mixed liquor of dilution are expelled in mixer 4, after syringe pump 1 has been injected, again mixed liquor in mixer 4 is drawn back, repeatedly inject and extraction until mixed liquor mix.As from the foregoing, mixer 4 only has a liquid inlet/outlet 41, mixed liquor is injected in the process of pump 1 via liquid inlet/outlet 41 injections and extraction, mixed liquor can effectively be mixed, and because syringe pump 1 transfusion precision can reach 0.5%, fidelity can reach 0.05%, when making the present embodiment automatic on-line Sample Dilution mixing arrangement can meet common sample introduction dilution mixing, can also well meet the dilution mixing requirement of automatic on-line micro-example.
In addition, after the sample in mixer 4 and dilution mix, by syringe pump 1, extracted completely, the second master port 31 is selected to be communicated with the second port switching 32, and syringe pump 1 just can be injected into the mixed liquor mixing in analytical instrument.Simultaneously, syringe pump 1 can also enter into mixer 4 in the identical mode of above-mentioned mixed process by cleaning fluid and clean, after mixer 4 cleans up, the 3rd port switching 53 is communicated with the 3rd master port 51, on the 3rd port switching 53, be connected with waste liquid barrel 6, the cleaning fluid in mixer 4 flow in waste liquid barrel 6 automatically.
The present embodiment automatic on-line Sample Dilution mixing arrangement, by adopting syringe pump to dilute, mix, syringe pump plays sample introduction in the course of the work, dilution and three kinds of effects of mixing, for low dose of sample, can extract accurately acquisition by syringe pump, simultaneously, syringe pump also can be set the dilution of multiple accurately to sample, and when mixing, by syringe pump, repeatedly extract and inject, can be so that sample and dilution mix fully, and, in extraction and injection process, to the content of material of mixed liquor itself, can not exert an influence, can effectively meet the requirement that low dose of sample mixes in the mixer of small volume, realize the versatility that improves automatic on-line Sample Dilution mixing arrangement, meet the dilution mixing requirement of automatic on-line sample.
Embodiment bis-
As shown in Figure 4, the present embodiment automatic on-line Sample Dilution mixing arrangement, comprises syringe pump 1, the first multi-position switching valve 2, the second multi-position switching valve 3 and mixer 4; The first multi-position switching valve 1 comprises the first master port 21 and two the first port switchings 22,23 that are communicated with the first master port 21 selections, the second multi-position switching valve 3 comprises the second master port 31 and three the second port switchings 32,33,34 that are communicated with the second master port 31 selections, and mixer 4 has a liquid inlet/outlet; Syringe pump 1 is connected with the first master port 21, and wherein one first port switching 23 is connected with the second master port 31, and wherein one second port switching 33 is connected with liquid inlet/outlet 41.
Particularly, the present embodiment automatic on-line Sample Dilution mixing arrangement is identical with the principle in embodiment mono-, is also to utilize syringe pump 1 to complete sample introduction, dilution and mixing.Difference is: between the first multi-position switching valve 2 and mixer 4, adopt second multi-position switching valve 3 to connect, the second multi-position switching valve 3 has three the second port switchings 32,33,34, the second port switching 32 is for being injected into analytical instrument by the mixed liquor mixing, the second port switching 33 connects mixer 4, and the second port switching 34 is connected with waste liquid barrel 6.
Embodiment tri-
The present embodiment automatic on-line Sample Dilution mixing arrangement is based on above-described embodiment one or embodiment bis-, difference is: mixer 4 comprises mixing tube 40 and waterproof ventilated membrane 42, on mixing tube 40, be provided with liquid inlet/outlet 41 and air inlet/outlet (not shown), on air inlet/outlet, be provided with waterproof ventilated membrane 42.Concrete, waterproof ventilated membrane 42 has the function of ventilative and waterproof, in the process of mixing at syringe pump 1, pressure in waterproof ventilated membrane 42 energy balance mixing tubes 40, to guarantee that syringe pump 1 moves smoothly, meanwhile, waterproof ventilated membrane 42 can effectively filter and enter into the contained pollutant of mixing tube 40 gases, guarantees the measuring accuracy of sample.
Embodiment tetra-
The present embodiment automatic on-line Sample Dilution mixing arrangement is based on above-described embodiment one or embodiment bis-, and difference is: mixer comprises flexible pouch, is provided with liquid inlet/outlet in flexible pouch.Concrete, mixer adopts the mode of flexible pouch, due to flexible pouch deformable, thus can according to how many variations of adapting to of flexible pouch internal mix liquid, to guarantee that syringe pump 1 moves smoothly.In addition, because flexible pouch is hermetically sealed, do not have the impact of environmental contaminants, guarantee the measuring accuracy of sample.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (4)
1. an automatic on-line Sample Dilution mixing arrangement, is characterized in that, comprises syringe pump, the first multi-position switching valve, the second multi-position switching valve and mixer; Described the first multi-position switching valve comprises the first master port and two the first port switchings that are communicated with described the first master port selection, described the second multi-position switching valve comprises the second master port and three the second port switchings that are communicated with described the second master port selection, and described mixer has a liquid inlet/outlet; Described syringe pump is connected with described the first master port, and wherein described in one, the first port switching is connected with described the second master port, and wherein described in one, the second port switching is connected with described liquid inlet/outlet.
2. an automatic on-line Sample Dilution mixing arrangement, is characterized in that, comprises syringe pump, the first multi-position switching valve, the second multi-position switching valve, the 3rd multi-position switching valve and mixer; Described the first multi-position switching valve comprises the first master port and two the first port switchings that are communicated with described the first master port selection, described the second multi-position switching valve comprises the second master port and two the second port switchings that are communicated with described the second master port selection, described the 3rd multi-position switching valve comprises the 3rd master port and two the 3rd port switchings that are communicated with described the 3rd master port selection, and described mixer has a liquid inlet/outlet; Described syringe pump is connected with described the first master port, and wherein described in one, the first port switching is connected with described the second master port, wherein described in one the second port switching with wherein described in one the 3rd port switching be connected, described the 3rd master port is connected with described liquid inlet/outlet.
3. automatic on-line Sample Dilution mixing arrangement according to claim 1 and 2, it is characterized in that, described mixer comprises mixing tube and waterproof ventilated membrane, is provided with described liquid inlet/outlet and air inlet/outlet on described mixing tube, is provided with described waterproof ventilated membrane on described air inlet/outlet.
4. automatic on-line Sample Dilution mixing arrangement according to claim 1 and 2, is characterized in that, described mixer comprises flexible pouch, is provided with described liquid inlet/outlet in described flexible pouch.
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| CN201420335592.8U CN203908854U (en) | 2014-06-23 | 2014-06-23 | Automatic online sample diluting and mixing device |
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| CN201420335592.8U CN203908854U (en) | 2014-06-23 | 2014-06-23 | Automatic online sample diluting and mixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
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