CN203908855U - Diluting and mixing device of automatic online sample and chromatographic analysis instrument - Google Patents
Diluting and mixing device of automatic online sample and chromatographic analysis instrument Download PDFInfo
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- CN203908855U CN203908855U CN201420335730.2U CN201420335730U CN203908855U CN 203908855 U CN203908855 U CN 203908855U CN 201420335730 U CN201420335730 U CN 201420335730U CN 203908855 U CN203908855 U CN 203908855U
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Abstract
The utility model provides a diluting and mixing device of an automatic online sample and a chromatographic analysis instrument. The diluting and mixing device of the automatic online sample comprises a constant flow pump, a first multi-position switching valve, a second multi-position switching valve and a mixer, wherein the first multi-position switching valve comprises a first main port and four first switch ports which are selectively communicated with the first main port; the second multi-position switching valve comprises a second main port and four second switch ports which are selectively communicated with the second main port; and the constant flow pump and the mixer are sequentially connected between the first main port and the second main port, wherein one first switch port is connected with one second switch port, and another second switch port is provided with an end cap. The universality of the diluting and mixing device of the automatic online sample is improved, and the automatic online sample diluting and mixing requirements are met.
Description
Technical field
The utility model relates to chromatographic analysis device, relates in particular to a kind of dilution mixing device and chromatography instrument of automatic on-line sample.
Background technology
Chromatograph application chromatography is carried out qualitative and quantitative analysis to material, and studies the physics of material, the instrument of chemical characteristic.Chromatograph in use, generally need to first inject quantitative sample, and then injects dilution according to extension rate 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, but, dilution for automatic on-line micro-example mixes, the concentration of component is in ppb ~ ppm level, its sample size is only between 10 ~ 200 μ L, for example, due to seldom (: 300 times of the Sample Dilutions of 10 μ L) of the dosage of collected specimens, self volume of its corresponding mixer 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 uses will affect the measuring accuracy of sample.As from the foregoing, mixer of the prior art cannot meet the dilution mixing requirement of automatic on-line sample.
Summary of the invention
Technical problem to be solved in the utility model is: dilution mixing device and chromatography instrument that a kind of automatic on-line sample is provided, in solution prior art, mixer cannot meet the defect of the dilution mixing requirement of automatic on-line sample, the dilution mixing device of realizing automatic on-line sample meets the dilution mixing requirement of automatic on-line sample, improves mixing uniformity.
The technical scheme that the utility model provides is that a kind of dilution mixing device of automatic on-line sample, comprises constant flow pump, the first multi-position switching valve, the second multi-position switching valve and mixer; Described the first multi-position switching valve comprises that the first master port and four select with described the first master port the first port switching being communicated with, and described the second multi-position switching valve comprises that the second master port and four select with described the second master port the second port switching being communicated with; Between described the first master port and described the second master port, be connected with constant flow pump and mixer in turn, wherein described in one the first port switching with wherein described in one the second port switching be connected, described in another, the second port switching is provided with plug.
Further, described mixer comprises mixing tube, is provided with inlet and liquid outlet on described mixing tube, and described inlet is connected with described constant flow pump, and described liquid outlet is connected with described the second master port.
Further, on described mixing tube, be also provided with air inlet/outlet, on described air inlet/outlet, be provided with waterproof ventilated membrane.
Further, described mixer comprises flexible pouch, is provided with inlet and liquid outlet in described flexible pouch, and described inlet is connected with described constant flow pump, and described liquid outlet is connected with described the second master port.
Further, described plug seals up the second port switching described in another.
Further, described plug is also provided with air inlet/outlet, on described air inlet/outlet, is provided with waterproof ventilated membrane.
Further, also comprise waste liquid barrel, the second port switching is connected with described waste liquid barrel described in described the second multi-position switching valve remaining.
The utility model also provides a kind of chromatography instrument, comprise apparatus subject, on described apparatus subject, be provided with injection port, also comprise the dilution mixing device of above-mentioned automatic on-line sample, the second multi-position switching valve in the dilution mixing device of described automatic on-line sample is connected with described injection port.
Dilution mixing device and the chromatography instrument of the automatic on-line sample that the utility model provides, complete sample introduction by constant flow pump, dilution and three kinds of functions of mixing, constant flow pump is by setting its working time and flow, sample introduction sample is set to the dilution of multiple accurately, and in the time mixing, drive the mixed liquor of sample and dilution to circulate between mixer and constant flow pump by constant flow pump, can make sample and dilution mix fully, and, in mixed process, can not exert an influence to the content of material of mixed liquor itself, can effectively meet the requirement that low dose of sample mixes in the mixer of small volume, realize the dilution mixing requirement that online micro-example dilution commingled system meets automatic on-line sample, improve mixing uniformity.
Brief description of the drawings
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 skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the dilution mixing device embodiment of the utility model automatic on-line sample structural representation in sample introduction state;
Fig. 2 is the dilution mixing device embodiment of the utility model automatic on-line sample structural representation in diluted state;
Fig. 3 is the dilution mixing device embodiment of the utility model automatic on-line sample structural representation in admixture;
Fig. 4 is the structural representation of mixer in the dilution mixing device of the utility model automatic on-line sample.
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, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the dilution mixing device of the present embodiment automatic on-line sample, comprises constant flow 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 comprises that the first port switching 22,23,24,25, the second multi-position switching valves 3 that the first master port 21 and four and the first master port 21 are selected to be communicated with comprise that the second master port 31 and four select with the second master port 31 the second port switching 32,33,34,35 being communicated with; Between the first master port 21 and the second master port 31, be connected with constant flow pump 1 and mixer 4 in turn, wherein one first port switching 25 is connected with one second port switching 35 wherein, and another second port switching 33 is provided with plug 331.
Particularly, the dilution mixing device of the present embodiment automatic on-line sample adopts constant flow pump 1 to complete the operation of sample introduction, dilution and mixing, by setting working time and the flow of constant flow pump 1, the multiple that can carry out accurately sample introduction and Sample Dilution is set, thus realize high-precision fluid transport.Concrete, first, as shown in Figure 1, the first master port 21 is communicated with the first port switching 22, and the second master port 31 is connected with the second port switching 33 that is connected with plug 331, and constant flow pump 1 operation is extracted quantitative sample and is entered into mixer 4; Then, as shown in Figure 2, the first master port 21 is communicated with the first port switching 23, and the second master port 31 is also connected with the second port switching 33 that is connected with plug 331, and constant flow pump 1 can extract quantitative dilution by the first port switching 23 and enter into mixer 4; Finally, as shown in Figure 3, the first master port 21 and being communicated with the first port switching 25, the second master port 31 is communicated with the second port switching 35, between constant flow pump 1 and mixer 4, form circulation stream, constant flow pump 1 moves to drive mixed liquor to circulate, and mixed liquor, circulating in process, makes sample fully mix with dilution.When the dilution mixing device of the present embodiment automatic on-line sample 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, the second master port 31 is selected to be communicated with the second port switching 32, and constant flow pump 1 just can be transported to the mixed liquor mixing in chromatography instrument.Simultaneously, constant flow pump 1 can also enter into mixer 4 by cleaning fluid in the identical mode of above-mentioned mixed process by the first port switching 24 and clean, after mixer 4 cleans up, the second master port 31 selects to be communicated with the second port switching 34, on the 3rd port switching 34, be connected with waste liquid barrel 6, the cleaning fluid in mixer 4 flow in waste liquid barrel 6 automatically.
The dilution mixing device of the present embodiment automatic on-line sample, complete sample introduction by constant flow pump, dilution and three kinds of functions of mixing, constant flow pump is by setting its working time and flow, sample introduction sample is set to the dilution of multiple accurately, and in the time mixing, drive the mixed liquor of sample and dilution to circulate between mixer and constant flow pump by constant flow pump, can make sample and dilution mix fully, and, in mixed process, can not exert an influence to the content of material of mixed liquor itself, can effectively meet the requirement that low dose of sample mixes in the mixer of small volume, realize the dilution mixing requirement that online micro-example dilution commingled system meets automatic on-line sample, improve mixing uniformity.
Based on technique scheme, optional, as shown in Figure 4, mixer 4 comprises mixing tube 41, is provided with inlet 42 and liquid outlet 43 on mixing tube 41, and inlet 42 is connected with constant flow pump 1, and liquid outlet 43 is connected with the second master port 31.Concrete, mixer 4 is mainly made up of mixing tube 41, constant flow pump 1 is injected into dilution in mixing tube 41, and in dilution, for mixing material being injected in mixing tube 41 of making that constant flow pump 1 can be happy, plug 331 is also provided with air inlet/outlet (not shown), on described air inlet/outlet, be provided with waterproof ventilated membrane (not shown), dilution is injected in the process of mixing tube 41 at constant flow pump 1, air in mixing tube 41 is discharged through the air inlet/outlet of plug 331, and owing to being provided with waterproof ventilated membrane, can avoid leak of liquid in mixing tube 41 to outside.Preferably, on mixing tube 41, be also provided with air inlet/outlet (not shown), on air inlet/outlet, be provided with waterproof ventilated membrane 44.Concrete, waterproof ventilated membrane 44 has the function of ventilative and waterproof, because the liquid outlet 43 of mixing tube 41 is connected with second port switching 33 with plug 331 by the second master port 31, plug 331 now seals up the second port switching 33 completely, make the second port switching 33 airtight also waterproof, at constant flow pump 1, sample and dilution are transported in the process of mixing tube 41, pressure in waterproof ventilated membrane 44 energy balance mixing tubes 41, to guarantee that constant flow pump 1 moves smoothly, simultaneously, waterproof ventilated membrane 44 can effectively filter and enter into the contained pollutant of mixing tube 41 gases, guarantee the measuring accuracy of sample.Or mixer 4 can comprise flexible pouch, in flexible pouch, be provided with inlet and liquid outlet, inlet is connected with constant flow pump 1, and liquid outlet is connected with the second master port 31.Concrete, mixer adopts the mode of flexible pouch, due to flexible pouch deformable, thereby the variation that can adapt to according to the number of flexible pouch internal mix liquid, at constant flow pump 1, sample and dilution are transported in the process of mixing tube 41 guaranteeing, constant flow pump 1 can move smoothly, and plug 331 now seals up the second port switching 33 completely, makes the second port switching 33 airtight also waterproof.In addition, because flexible pouch is hermetically sealed, do not have the impact of environmental contaminants, guarantee the measuring accuracy of sample.
The utility model also provides a kind of chromatography instrument, comprise apparatus subject, on apparatus subject, be provided with injection port, also comprise the dilution mixing device of above-mentioned automatic on-line sample, the second multi-position switching valve in the dilution mixing device of automatic on-line sample is connected with injection port.
Particularly, the dilution mixing device of the automatic on-line sample in the present embodiment can adopt the dilution mixing device of the automatic on-line sample in the dilution mixing device embodiment of the utility model automatic on-line sample, its concrete structure can, referring to the record of the dilution mixing device embodiment of the utility model automatic on-line sample and accompanying drawing 1-Fig. 4, not repeat them here.
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 amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (8)
1. a dilution mixing device for automatic on-line sample, is characterized in that, comprises constant flow pump, the first multi-position switching valve, the second multi-position switching valve and mixer; Described the first multi-position switching valve comprises that the first master port and four select with described the first master port the first port switching being communicated with, and described the second multi-position switching valve comprises that the second master port and four select with described the second master port the second port switching being communicated with; Between described the first master port and described the second master port, be connected with constant flow pump and mixer in turn, wherein described in one the first port switching with wherein described in one the second port switching be connected, described in another, the second port switching is provided with plug.
2. the dilution mixing device of automatic on-line sample according to claim 1, it is characterized in that, described mixer comprises mixing tube, is provided with inlet and liquid outlet on described mixing tube, described inlet is connected with described constant flow pump, and described liquid outlet is connected with described the second master port.
3. the dilution mixing device of automatic on-line sample according to claim 2, is characterized in that, is also provided with air inlet/outlet on described mixing tube, on described air inlet/outlet, is provided with waterproof ventilated membrane.
4. the dilution mixing device of automatic on-line sample according to claim 1, it is characterized in that, described mixer comprises flexible pouch, is provided with inlet and liquid outlet in described flexible pouch, described inlet is connected with described constant flow pump, and described liquid outlet is connected with described the second master port.
5. according to the dilution mixing device of the automatic on-line sample described in claim 3 or 4, it is characterized in that, described plug seals up the second port switching described in another.
6. the dilution mixing device of automatic on-line sample according to claim 2, is characterized in that, described plug is also provided with air inlet/outlet, on described air inlet/outlet, is provided with waterproof ventilated membrane.
7. the dilution mixing device of automatic on-line sample according to claim 1, is characterized in that, also comprises waste liquid barrel, and the second port switching is connected with described waste liquid barrel described in described the second multi-position switching valve remaining.
8. a chromatography instrument, comprise apparatus subject, on described apparatus subject, be provided with injection port, it is characterized in that, the dilution mixing device that also comprises the automatic on-line sample as described in as arbitrary in claim 1-7, the second multi-position switching valve in the dilution mixing device of described automatic on-line sample is connected with described injection port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420335730.2U CN203908855U (en) | 2014-06-23 | 2014-06-23 | Diluting and mixing device of automatic online sample and chromatographic analysis instrument |
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| CN201420335730.2U CN203908855U (en) | 2014-06-23 | 2014-06-23 | Diluting and mixing device of automatic online sample and chromatographic analysis instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072557A (en) * | 2018-03-02 | 2018-05-25 | 南京科创检测技术有限公司 | A kind of volum-controlled type automatic dilutor |
| CN108072767A (en) * | 2016-11-18 | 2018-05-25 | 上海安杰环保科技股份有限公司 | A kind of autosampler for possessing sample dilution function |
| CN111521477A (en) * | 2020-05-20 | 2020-08-11 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
-
2014
- 2014-06-23 CN CN201420335730.2U patent/CN203908855U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072767A (en) * | 2016-11-18 | 2018-05-25 | 上海安杰环保科技股份有限公司 | A kind of autosampler for possessing sample dilution function |
| CN108072557A (en) * | 2018-03-02 | 2018-05-25 | 南京科创检测技术有限公司 | A kind of volum-controlled type automatic dilutor |
| CN111521477A (en) * | 2020-05-20 | 2020-08-11 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
| CN111521477B (en) * | 2020-05-20 | 2023-02-10 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
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