Automatic online micro-scale sample dilution and mixing system and mixing method

A mixing system and sample technology, applied in the field of chromatographic analysis devices, can solve the problem that the mixer cannot meet the requirements of automatic online sample dilution and mixing, and achieve the effect of improving the mixing uniformity

Active Publication Date: 2014-09-24
QINGDAO PUREN INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide an automatic online micro sample dilution and mixing system and mixing method, to solve the defect that the mixer in the prior art cannot meet the requirements of automatic online sample dilution and mixing, and to realize the automatic online micro sample dilution and mixing system Meet the dilution and mixing requirements of automatic online samples and improve mixing uniformity

Method used

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  • Automatic online micro-scale sample dilution and mixing system and mixing method
  • Automatic online micro-scale sample dilution and mixing system and mixing method
  • Automatic online micro-scale sample dilution and mixing system and mixing method

Examples

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Embodiment 1

[0026] like figure 1 As shown, the automatic online trace sample dilution mixing system in this embodiment includes a constant flow pump 1, a first multi-position switching valve 2, a second multi-position switching valve 3, a mixer 4, a six-way valve 8, a quantitative tube 5 and an inlet Sample pump 7; the first multi-position switching valve includes a first main port 21 and two first switching ports 22, 23 selectively communicated with the first main port 21, and the second multi-position switching valve 3 includes a second main port 31 and Four second switching ports 32, 33, 34, 35 selectively communicated with the second main port 31; the two ports of the quantitative tube 5 and the inlet of the sampling pump 7 are connected on the six-way valve 8, the first main port 21 and The constant flow pump 1 and the mixer 4 are sequentially connected between the second main ports 31, one of the first switching ports 22 is connected to the six-way valve 8, the other first switching...

Embodiment 2

[0031] The automatic online trace sample dilution and mixing system of this embodiment is based on the above-mentioned embodiment 1, the difference is that: Figure 5As shown, the mixer 4 includes a mixing tube 41, the mixing tube 41 is provided with a liquid inlet 42 and a liquid outlet 43, the liquid inlet 42 is connected to the constant flow pump 1, and the liquid outlet 43 is connected to the second main port 31. Specifically, the mixer 4 is mainly composed of a mixing tube 41, and the constant flow pump 1 injects the diluent into the mixing tube 41, and during the dilution process, in order to allow the constant flow pump 1 to inject the mixed liquid into the mixing tube 41 comfortably Among them, the plug 331 is also provided with air inlet and outlet holes (not shown), and the air inlet and outlet holes are provided with a waterproof and breathable membrane (not shown). When the constant flow pump 1 injects the diluent into the mixing tube 41, the mixing The air in the ...

Embodiment 3

[0033] The automatic online trace sample dilution and mixing system of this embodiment is based on the first embodiment above, the difference is that: the mixer includes a flexible bag, the flexible bag is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the constant flow pump 1, and the liquid outlet The port is connected to the second main port 31. Specifically, the mixer adopts a flexible bag. Since the flexible bag is deformable, it can be adapted according to the amount of mixed liquid inside the flexible bag, so as to ensure that the sample and diluent are delivered to the mixing tube 41 by the constant flow pump 1. During the process, the constant flow pump 1 can run smoothly, and at this time the plug 331 completely seals the second switch port 33 , making the second switch port 33 airtight and watertight. In addition, since the flexible bag is fully sealed, there will be no influence of external pollutants, ensuring the measurement ac...

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Abstract

The invention provides an automatic online micro-scale sample dilution and mixing system and a mixing method. The system includes a constant flow pump, a first multi-position switching valve, a second multi-position switching valve, a mixer, a six-way valve, a quantitative tube and a sampling pump. The first multi-position switching valve comprises a first main port and two first switch ports in selective connection with the first main port; the second multi-position switching valve comprises a second main port and four second switch ports in selective connection with the second main port; two ports of the quantitative tube and the inlet of the sampling pump are connected to the six-way valve, constant flow pump and the mixer are successively connected between the first main port and the second main port; and one first switch port are connected with the six-way valve, the other first switch port is connected with one of the second switch ports, and the other second switch port is provided with a plug. The invention improves versatility of the automatic on-line micro-scale sample dilution mixing system, and meets the requirements of automatic on-line sample dilution and mixing.

Description

technical field [0001] The invention relates to a chromatographic analysis device, in particular to an automatic on-line micro sample dilution mixing system and a mixing method. Background technique [0002] Chromatographic analyzer is an instrument for qualitative and quantitative analysis of substances by chromatography, and for studying the physical and chemical properties of substances. During the use of the chromatographic analyzer, it is generally necessary to inject a quantitative sample first, and then inject a diluent to dilute the sample according to the dilution factor. In general, after the sample is mixed with the diluent, it needs to be mixed. The following two methods are usually used in the prior art: the first method is to mix the sample and the diluent by stirring; the second method is to use bubbling Mix the sample and diluent uniformly. Both of the above two methods can fully mix large-dose samples and diluents. However, for the dilution and mixing of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38
Inventor 曲新聪侯倩慧
Owner QINGDAO PUREN INSTR
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