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Automatic online 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 problems of poor versatility of the mixer and cannot meet the requirements of automatic online sample dilution and mixing, and achieve the effect of meeting the dilution and mixing requirements and improving versatility

Inactive 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 sample dilution and mixing device and mixing method, to solve the defect that the mixer in the prior art has poor versatility and cannot meet the dilution and mixing requirements of automatic online samples, and to realize the improvement of automatic online sample dilution and mixing. The versatility of the dilution and mixing device meets the dilution and mixing requirements of automatic online samples

Method used

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  • Automatic online sample dilution and mixing device and mixing method
  • Automatic online sample dilution and mixing device and mixing method
  • Automatic online sample dilution and mixing device and mixing method

Examples

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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the automatic online sample dilution and mixing device 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 and a mixer 4; the first multi-position The 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 two first switching ports connected to the second main port 31. The second switching ports 32, 33 that are selectively communicated, the third multi-position switching valve 5 includes a third main port 51 and two third switching ports 52, 53 that are selectively communicated with the third main port 51, and the mixer 4 has an inlet and outlet Liquid hole 41; the syringe pump 1 is connected to the first main port 21, one of the first switching ports 23 is connec...

Embodiment 2

[0027] Such as Figure 4 As shown, the automatic online sample dilution and mixing device in this embodiment includes a syringe pump 1, a first multi-position switching valve 2, a second multi-position switching valve 3 and a mixer 4; 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, the second multi-position switching valve 3 includes a second main port 31 and three second switching ports selectively communicated with the second main port 31 32, 33, 34, the mixer 4 has a liquid inlet and outlet hole; the syringe pump 1 is connected to the first main port 21, and one of the first switching ports 23 is connected to the second main port 31, and one of the second switching ports 33 is connected to the inlet and outlet The liquid hole 41 is connected.

[0028]Specifically, the principle of the automatic online sample dilution and mixing device in this embodiment is th...

Embodiment 3

[0030] The automatic online sample dilution and mixing device of this embodiment is based on the first or second embodiment above, the difference is that the mixer 4 includes a mixing tube 40 and a waterproof and breathable membrane 42, and the mixing tube 40 is provided with a liquid inlet and outlet hole 41 and an air inlet and outlet hole (not shown). As shown in the figure), a waterproof and breathable membrane 42 is arranged on the air inlet and outlet holes. 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 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 and a mixer. The first multi-position switching valve comprises a first main port and two first switch ports in selective communication with the first main port; the second multi-position switching valve comprises a second main port and two second switch ports in selective communication with the second main port; the third multi-position switching valve comprises a third main port and two third switch ports in selective communication with the third main port; the mixer is provided with a liquid inlet and outlet port; the syringe 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; 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 sample dilution and 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. The above two methods can fully mix large doses of samples and diluents. However, for the dilution and mixing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38
Inventor 侯倩慧马兴录
Owner QINGDAO PUREN INSTR
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