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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

Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the automatic online micro-sample dilution mixing system in this embodiment includes a syringe pump 1, a first multi-position switching valve 2, a second multi-position switching valve 3, a third multi-position switching valve 5, a mixer 4, and a six-way valve 8. Quantitative tube 9 and sampling 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 Including the second main port 31 and two second switching ports 32, 33 selectively communicating with the second main port 31, the third multi-position switching valve 5 includes a third main port 51 and two switching ports selectively communicating with the third main port 51 The third switching port 52, 53 of the mixer 4 has a liquid inlet and outlet hole 41; the two ports of the metering tube 9 and the inlet of the sampling pump 7 are...

Embodiment 2

[0030] Such as Figure 4 As shown, the automatic online micro-sample dilution mixing system in this embodiment includes a syringe 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 9 and a sample injection Pump 7; the first multi-position switching valve 1 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 Three second switching ports 32, 33, 34 selectively communicated with the second main port 31, the mixer 4 has a liquid inlet and outlet hole; the two ports of the quantitative tube 9 and the inlet of the sampling pump 7 are connected to the six-way valve 8 , the syringe pump 1 is connected to the first main port 21, one of the first switching ports 23 is connected to the second main port 31, the other first switching port 22 is conne...

Embodiment 3

[0033] The automatic online micro-sample dilution and mixing system in this embodiment is based on the above-mentioned embodiment 1 or embodiment 2, the difference is that: Figure 5 As shown, the mixer 4 includes a mixing tube 40 and a waterproof and breathable membrane 42. The mixing tube 40 is provided with a liquid inlet and outlet hole 41 and an inlet and outlet air hole (not shown), and the inlet and outlet air hole is provided with a waterproof and breathable membrane 42. Specifically, the waterproof and breathable membrane 42 has the functions of ventilation and waterproof. During the mixing process of the syringe pump 1, the waterproof and breathable membrane 42 can balance the pressure in the mixing tube 40 to ensure the smooth operation of the syringe pump 1. At the same time, the waterproof and breathable The membrane 42 can effectively filter the pollutants contained in the gas entering the mixing tube 40 to ensure the measurement accuracy of the sample.

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Abstract

The invention provides an automatic online micro-scale sample dilution and mixing system and a mixing method. The device includes a syringe pump, a first multi-position switching valve, a second multi-position switching valve, a third multi-position switching valve, a mixer, a six-way valve, a quantitative tube and a sample introduction pump. The first multi-position switching valve comprises a first main port and two first switch ports; the second multi-position switching valve comprises a second main port and two second switch ports; the third multi-position switching valve comprises a third main port and two third switch ports; the mixer is provided with a liquid inlet and outlet port; the quantitative tube and sample introduction pump are connected to the six-way valve; the syringe pump is connected with the first main port; one first switch port is connected with the second main port, and the other first switch port is connected with the six-way valve; one second switch port is connected with one third switch port; and the third main port is connected with the liquid inlet and outlet port. 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 in a uniform manner. Both of the above two methods can fully mix large-dose samples and diluents. However, for the dilution and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38G01N30/06
Inventor 侯倩慧曲新聪
Owner QINGDAO PUREN INSTR
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