Heating reflux extraction method

A technology of heating reflux and extraction methods, which is applied in separation methods, chemical instruments and methods, solvent extraction, etc., and can solve problems such as poor accuracy of extraction results, contamination of the table, and low extraction efficiency of heating reflux

Active Publication Date: 2022-03-08
ZHENGZHOU TOBACCO RES INST OF CNTC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heating reflux extraction method to solve the problems of low heating reflux extraction efficiency, contamination of the table top, and poor accuracy of extraction results

Method used

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Experimental program
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specific Embodiment 1

[0034] Specific embodiment 1 of the support assembly of the present invention: the support assembly can be used to implement the heating reflux extraction method of the above-mentioned embodiment 1, including a bottle support and a condenser tube righting device, which are connected with the flask 2 (including the container containing the solvent and the sample) when in use Sample flask, solvent flask containing the same solvent), condenser tube 3, stand 5, cross clip 11 and water bath (not shown in the figure) cooperate to complete the heating and reflux extraction test, the specific form is as follows: figure 1 and figure 2 As shown, the bottle holder comprises a pair of oppositely arranged risers 6 which form the legs of the bottle holder. The vertical plate 6 is fixedly connected with the limiting plate 7 and the supporting plate 8, and the limiting plate 7 and the supporting plate 8 are arranged horizontally at intervals one above the other. The outer diameter is to avo...

specific Embodiment 2

[0037] Specific embodiment 2 of the bracket assembly of the heating reflux extraction device of the present invention: the difference between this embodiment and specific embodiment 1 is that no rubber sleeve is provided, and a rubber layer is provided on the inner wall of the centralizing ring to avoid collision between the condensation pipe and the centralizing ring. The rubber layer constitutes the cushioning layer.

specific Embodiment 3

[0038] Specific embodiment 3 of the support assembly of the heating reflux extraction device of the present invention: the difference between this embodiment and specific embodiment 1 is that the condensation pipe centralizing device may not include the connecting rod 1, and another supporting member is fixed on it during use. corresponding position.

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Abstract

The invention relates to a heating reflux extraction method and a support assembly for implementing the method. The heating reflux extraction method is that during the heating reflux extraction process, the sample flask and the solvent flask are alternately connected to the condensing tube in a detachable and sealed manner to form a bottle-tube assembly. The tube assembly is erected, and under the righting condition, the bottle-tube assembly can move up and down relative to the righting device, and when the sample flask and solvent flask are replaced, the bottle-tube assembly is moved up to provide an operating space. By adopting the method, the effects of improving efficiency, increasing the accuracy of extraction results, reducing pollution to the working environment, automatically cleaning the condensation tube and preventing cross-contamination between different samples can be achieved.

Description

technical field [0001] The invention relates to a heating reflux extraction method. Background technique [0002] Heating reflux extraction is a method of extracting an active ingredient in a sample with a solvent, and it is a common extraction method for laboratory determination of the content of chemical components in a sample. During the extraction process, the solvent in the extraction container is distilled off by heating, then cooled and returned to the container to continue extracting the sample until the active ingredients in the sample are completely extracted. [0003] The device used in this method is mainly composed of a flask, a condenser, etc., and is used with a heating body (commonly used as a water bath or an oil bath). The usual way to fix the flask and condenser tube in use is to fix the flask and condenser tube on the stand by using upper and lower screw-on iron clamps. [0004] This fixing method has the following problems: one, when building the devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L9/04B01L9/00B01D11/02G01N1/28
CPCB01L9/04B01L9/00B01D11/0215G01N1/28
Inventor 潘立宁刘惠民王鹏飞王宏伟孙学辉王晓瑜秦亚琼樊美娟谢复炜聂聪刘绍锋张晓兵
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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