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Multichannel bridge type flow path sampling system and sampling method thereof applied to analytical instrument

A sampling system, multi-channel technology, applied in the field of multi-channel sampling system, can solve the problem of inability to achieve a single unlimited amount of sampling and so on

Active Publication Date: 2009-12-09
YIWEN ENVIRONMENTAL SCI & TECH GUANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is similar to method 2, but because the pump body is located at the upper end of the reaction chamber, it still cannot achieve a single unlimited injection

Method used

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  • Multichannel bridge type flow path sampling system and sampling method thereof applied to analytical instrument
  • Multichannel bridge type flow path sampling system and sampling method thereof applied to analytical instrument
  • Multichannel bridge type flow path sampling system and sampling method thereof applied to analytical instrument

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Embodiment Construction

[0016] like Figure 4 As shown, 1 is a pretreatment device, 2 is a metering device, 3 is a digestion device, 4 is a measuring device, 5 is a liquid detection device, 6 is a reagent pump, and 7 is a heptad valve (such as Image 6 The schematic diagram of the seven-joint valve in ), 8 is the four-joint valve (such as Image 6 Shown quadruple valve principle diagram), 9,10 are extension ends, 11 is reagent, and 12 is waste liquid outlet.

[0017] The multi-channel bridge flow path sampling system of the present invention mainly consists of a seven-piece valve 7 and a four-piece valve 8, a liquid detection device 5, a reagent pump 6, a pretreatment device 1 and a plurality of functional chambers (metering device 2 , digestion device 3 and measuring device 4) composition. Among them, the heptad valve 7 and the quadruple valve 8, the liquid detector 5, the reagent pump 6, and the pretreatment device 1 are the main parts of the present invention. The metering device 2, the digesti...

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Abstract

The invention relates to a multichannel bridge type flow path sampling system and a sampling method thereof applied to an analytical instrument. The multichannel bridge type flow path sampling system is characterized by comprising a pretreatment device, a metering device, a digestion device, a measuring device, a liquid detecting device, a sampling and driving device, a first flow path switching device and a second flow path switching device; various reagent vessels are connected with the liquid detecting device and the sampling and driving device through the first flow path switching device and then is connected with the second flow path switching device; the second flow path switching device is connected with the pretreatment device, the metering device , the digestion device and the measuring device; and the system can achieve the effect that a plurality of reagents are accurately sampled in different reaction cavities at a flexible speed.

Description

technical field [0001] The invention relates to a sampling system in analytical instruments in the field of environmental protection, in particular to a multi-channel sampling system. Background technique [0002] At present, the sampling systems in existing analytical instruments mainly include continuous sampling systems and quantitative sampling systems. Since the sample consumption of the continuous sampling system is relatively large, the quantitative sampling system is generally used. In the existing automatic liquid analysis instruments that adopt the method of quantitative sampling system, the sampling system is a multi-channel flow path sampling system, and the methods for realizing multi-channel are roughly divided into three types: [0003] 1. Each channel is driven by a set of reagent pumps to realize sample injection, so that various reagents enter the reaction chamber for reaction, etc. After the reaction, the reagent pump still needs to drive the reagents to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/02G01N1/28G01N1/36
Inventor 肖巍武文剑何广田徐剑飞
Owner YIWEN ENVIRONMENTAL SCI & TECH GUANGZHOU