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Liquid sampling system and control method thereof

A sampling system and control method technology, applied in the direction of analytical materials, instruments, etc., can solve the problems of low sampling accuracy, influence of detection accuracy, poor liquid flow smoothness, etc., to save power consumption, improve cleanliness, and simplify switching. Effect

Active Publication Date: 2016-03-23
SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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  • Abstract
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Problems solved by technology

However, subject to the driving principle, the injection accuracy is low, and the smoothness of the liquid flow is poor, which will have a great impact on the detection accuracy.

Method used

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  • Liquid sampling system and control method thereof

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] like figure 1 As shown, the liquid sampling system of the present invention includes a drive device 10 with bidirectional drive capability, a first regulating valve 1, a first three-way regulating valve 2, a second three-way regulating valve 3 and a three-way connector 4, the The three ends of the three-way connector 4 respectively pass through the first pipeline 11, the second pipeline 12 and the third pipeline 13 and the first regulating valve 1, the first three-way regulating valve 2 and the second three-way regulating valve 3 A valve port connection, a valve port of the first three-way regulating valve 2 is connected to the sample liquid bottle 5 through a suction pipe 14,...

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Abstract

The invention discloses a liquid sample injection system which comprises a driving device with two-way driving capability, a first adjustment valve, a second three-way adjustment valve, a third three-way adjustment valve and a three-way connector, wherein three ends of the three-way connector are respectively connected with one valve port of each of the first adjustment valve, the second three-way adjustment valve and the third three-way adjustment valve through pipelines; one valve port of the second three-way adjustment valve is connected to a sample liquid bottle through a pick-up tube; one valve port of the third three-way adjustment valve is connected to an analysis instrument through a drain pipe; the rest of valve ports of the second three-way adjustment valve and the third three-way adjustment valve are communicated through a liquid storage pipe; the driving device and another valve port of the first adjustment valve are communicated through a fourth pipeline. The invention also discloses a control method of the liquid sample injection system. The sample injection system is simple in structure without complicate positive pressure driving sample injection structure, and the smooth-going performance of injection sample liquid flow is relatively high in the whole process.

Description

technical field [0001] The invention relates to the technical field of trace liquid analysis and detection, in particular to a sample sampling system and a control method thereof, which have high smoothness of sample liquid flow and strong versatility of sample tubes. Background technique [0002] With the continuous development of detection technology, the samples that people analyze and detect are more diverse, and higher requirements are put forward for the performance of the sample injection system in terms of sample injection accuracy, sample liquid flow smoothness, and biological safety. . [0003] The traditional liquid sampling system adopts the following two methods: [0004] 1. The sample tube and the sampling pipeline are completely sealed and isolated from the atmosphere. The sample tube is positively pressured by a pressurizing device such as a syringe pump, and the sample is pushed into the sampling pipeline; this method usually has high sampling accuracy, At...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N35/10
Inventor 暴洪涛程智陈锋杜耀华王先文李辰宇
Owner SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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