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

A mixing device and sample technology, which is 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 device 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 device 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 device and mixing method
  • Automatic online micro-scale sample dilution and mixing device and mixing method
  • Automatic online micro-scale sample dilution and mixing device and mixing method

Examples

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Embodiment 1

[0026] Such as figure 1 As shown, the automatic online trace sample dilution and mixing device in this embodiment includes a constant flow pump 1, a first multi-position switching valve 2, a second multi-position switching valve 3, a third multi-position switching valve 7, a mixer 4, and a six-way Valve 8, quantitative tube 5 and constant flow pump 1; the first multi-position switching valve includes a first main port 21 and three first switching ports 22, 23, 24 selectively communicated with the first main port 21, and the second multi-position The 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, and the third multi-position switching valve 7 includes a third main port 71 and two connecting ports with the second main port 31. The third main port 71 selects the third switching port 72, 73 connected; the two-port constant flow pump 1, the first switching port 22 and the first s...

Embodiment 2

[0031] The automatic on-line trace sample dilution and mixing device in this embodiment is based on the above-mentioned embodiment 1, the difference is that: Figure 4 As 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 third multi-position switching valve 7, and the liquid outlet 43 is connected to the second main port 31 connections. 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 tub...

Embodiment 3

[0033] The automatic online trace sample dilution and mixing device in 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, and the liquid inlet is connected to the third multi-position switching valve 7 , the liquid outlet 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 meas...

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Abstract

The invention provides an automatic online micro-scale sample dilution and mixing device and a mixing method. The device includes a constant flow 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, and a quantitative tube. The first multi-position switching valve comprises a first main port and three first switch ports; the second multi-position switching valve comprises a second main port and four second switch ports; the third multi-position switching valve comprises a third main port and two third switch ports; the quantitative tube and two first switch ports are respectively connected to the six-way valve, a constant flow pump is connected between the first main port and the second main port; the mixer is connected between the third switch ports and the second main port; the reaming first switch ports are 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 device 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): G01N1/38
Inventor 马兴录曲新聪
Owner QINGDAO PUREN INSTR
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