Chromatographic column

A chromatographic column and column body technology, applied in the field of chromatographic columns, can solve the problems of complex chromatographic column structure, low chromatographic column efficiency, and difficulty in loading, unloading and replacing, and achieves the effects of low cost, easy loading, unloading and replacement, and good sealing performance.

Inactive Publication Date: 2008-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the chromatographic column in this technology still has disadvantages such as complex structure, difficult loading and unloading, and low efficiency of the chromatographic column.

Method used

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  • Chromatographic column

Examples

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Embodiment Construction

[0018] Referring to Fig. 1, the chromatographic column of the present invention includes a column body and caps at both ends of the column body.

[0019] The cylinder is composed of an outer tube 14 and an inner tube 9 nested in each other. The two ends of the outer tube 14 are liquid-tight with the outer wall of the inner tube 9, and the two ends of the inner tube 9 are respectively provided with loopers 7 with internal threads; the inner tube 9 The inner cavity 10 is used to fill the stationary phase.

[0020] The head includes a column connecting pipe 16 with an axial through hole inside, a pressure cap 2 with external threads fixedly connected to the outer wall of the column connecting pipe 16, and a filter plate 4 is placed in the through hole of the column connecting pipe 16 near the end of the cylinder; The pressure cap 2 on the cylinder is threadedly connected with the looper 7 on the cylinder, and the cylinder connecting pipe 16 is inserted into the inner pipe 9.

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Abstract

The invention discloses a chromatographic column, comprising a column body and sealed ends at the two ends of the column body; the column body consists of an external pipe and an internal pipe which are mutually embedded; a sealing part is arranged between the internal wall of the two ends of the external pipe and the external wall of the internal pipe; the two ends of the internal pipe are respectively provided with a movable sleeve which is provided with an internal thread; the sealed end comprises a column connecting pipe which is internally provided with an axial through hole and a pressing cap which is fixedly connected on the external wall of the column connecting pipe and provided with an external thread; the through hole of the column connecting pipe close to the column body end is internally provided with a filter plate; the pressing cap on the seal and the movable sleeve on the column body are connected with each other by the thread; the column connecting pipe is inserted into the internal pipe. The chromatographic column of the invention has the advantages of simple structure, being easy for removal and replacement, low cost, good sealing and being recyclable and reused repeatedly.

Description

technical field [0001] The invention relates to an analysis instrument, in particular to a chromatographic column. Background technique [0002] Chromatography is a method that makes use of the characteristics that when the mobile phase and the stationary phase interact with each other, the distribution of substances in the two phases is different, and the distribution of substances in the two phases is repeated, so that the components with only a small difference in distribution ratio can be completely separated. means. The chromatographic column is an instrument to realize this method, and it is an indispensable part in the chromatographic instrument. A traditional chromatographic column consists of a column joint, a filter device, a sealing device and a column tube. After repeated disassembly and assembly, the sealing performance is obviously reduced. In addition, the manufacturing process of the column joint is complicated, and it is difficult to guarantee the require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/60
Inventor 张安运
Owner ZHEJIANG UNIV
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