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A sampling method for a multi-position automatic sampling device

An automatic sample injection and sample injection technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of manual on-duty of syringes, etc., and achieve the effects of saving time and effort in operation, shortening the storage cycle, and saving test time

Active Publication Date: 2020-12-25
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem in the prior art that injection of syringes needs to be carried out manually, and to provide a sampling method for a multi-position automatic sampling device. The multi-position automatic sampling device can fix multiple sampling Clamping unit for syringes, automatic injection

Method used

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  • A sampling method for a multi-position automatic sampling device
  • A sampling method for a multi-position automatic sampling device
  • A sampling method for a multi-position automatic sampling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A multi-position automatic sampling device, including a fixed tray, a rotary drive structure for driving the rotation of the fixed tray, and a plurality of sampling syringes that are vertically clamped on the fixed positions of the fixed tray. The clamping unit, and the sample injection module located on the analysis position, the sample injection module includes a dynamic gas interface structure, a sample injection drive structure that drives the pressing plate 3 to complete the sample injection, and a three-jaw rotation that drives the airtight valve 4 to switch The air valve driving structure of the on position, wherein:

[0053] The clamping unit includes a syringe clamp for clamping the sleeve 1 of the sampling syringe, a piston follower 8 for providing guidance to the pressing plate 3 of the sampling syringe, and the sampling syringe The sleeve 1 is engaged with the chuck 9 fixed on the syringe holder, and the piston follower 8 is slidably connected to the rear of...

Embodiment 2

[0070] In this embodiment, on the basis of Embodiment 1, each component of the clamping unit is further described.

[0071] In order to clamp and fix the sleeve 1 stably, the syringe holder includes a front positioning part 10 and a rear positioning part 11 fixedly connected to the front positioning part 10, and the front positioning part 10 is formed with an open groove 12 for The sleeve 1 of the sampling syringe is embedded, the piston follower 8 is formed with a slot 13 for the insertion of the pressing plate 3 of the sampling syringe, the tail end of the front positioning part 10 is formed with a positioning outer edge 14, and the clamp A slot 47 is formed on the disc 9 for insertion of the positioning outer edge 14 and the fixing flange 7 of the sampling syringe, and the chuck 9 is engaged and fixed on the syringe holder.

[0072]When inserting the sampling syringe, insert the pressing plate 3 of the sampling syringe into the slot 13 of the piston follower 8, and when eng...

Embodiment 3

[0081] In this embodiment, on the basis of Embodiment 1, various driving structures and fixing positions are further described.

[0082] The diameter of the upper positioning hole 27 is the same as the diameter of the positioning plate 15 for matching insertion of the positioning plate 15, and the diameter of the middle positioning hole 28 is smaller than the outer diameter of the limiting protrusion ring 48 of the upper positioning portion. The diameter of the lower positioning hole 29 is smaller than the outer diameter of the chuck 9 .

[0083] In Step 1 of Example 2, when the clamping unit of the sampling syringe is fixed on the fixed plate frame, the upper positioning plate 26 is disassembled first, and the sampling syringe is placed on the syringe holder, and the syringe Insert the clamping piece into the corresponding middle positioning hole 28 and the lower positioning hole 29, and then engage the chuck 9 on the syringe clamping piece above the lower positioning hole 29...

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PUM

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Abstract

The invention discloses a sample injection method of a multi-position automatic sample injection device. The multi-position automatic sampling device comprises a fixed disc frame, a rotary driving structure used for driving the fixed disc frame to rotate, a plurality of sampling injector clamping units vertically clamped on fixed positions of the fixed disc frame one by one, and a sample injectionmodule located on an analysis position. The sample injection module comprises a dynamic gas interface structure, a sample injection driving structure for driving a pressing plate to complete sample injection and a gas valve driving structure for driving three claws of an airtight valve to rotate to switch on positions. The method is carried out automatically, so that the influence of difference of manual operation, non-uniformity of sample injection time and the like on the test stability is avoided.

Description

technical field [0001] The invention relates to the technical field of gas analysis, in particular to a sampling method for a multi-position automatic sampling device. Background technique [0002] Climate warming is a major challenge that the world is currently facing. The Fifth Assessment Report of the IPCC stated that the main cause of global warming is the sharp increase in the concentration of greenhouse gases in the atmosphere. According to reports, nearly 5%-20% of CO in the atmosphere is 2 , 15%-30%CH 4 and 80%-90% N 2 O is all derived from the soil. As the global climate continues to warm, the degradation of permafrost and the melting of glaciers have a great impact on greenhouse gas emissions. In order to understand the production mechanism of greenhouse gases and quantify the contribution rate and influencing factors of soil and glacier greenhouse gases to atmospheric emissions, it is necessary to use isotope technology to solve the problem. [0003] In recent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00G01N35/10
CPCG01N33/0011G01N35/1009
Inventor 石福习孙维贞王羿涵郭新磊陈慧敏万松泽张芸张扬毛瑢
Owner JIANGXI AGRICULTURAL UNIVERSITY