Intelligent automatic switching multi-channel gas chromatography column connection device

Abstract

The invention provides an intelligent automatic switching multi-channel gas chromatography column connection device which comprises a fixed base, a plurality of gas chromatography columns, a control panel and two multi-channel gas chromatography column connectors, wherein the control panel is provided with a display screen; the multi-channel gas chromatography column connectors are respectively provided with a plurality of fluid channels, are capable of switching the fluid channels by rotation so as to enable fluid to flow through the different gas chromatography columns, and are arranged on the top and at the bottom of the fixed base; the control panel is connected with the two multi-channel gas chromatography column connectors through circuit and is used for controlling the multi-channel gas chromatography column connectors to switch the fluid channels; the gas chromatography columns are connected between the corresponding fluid channels of the two multi-channel gas chromatography column connectors in parallel by chromatographic column connecting pipes. When the intelligent automatic switching multi-channel gas chromatography column connection device is used for replacing the gas chromatography columns, the gas chromatography columns do not need to be manually demounted and installed again, and sample injection of the different gas chromatography columns can be controlled by automatic switching through one key; the plurality of gas chromatography columns are convenient to wash and maintain at fixed period, and the device is simple to operate, low in manufacturing cost and easy to popularize.

Description

technical field [0001] The invention belongs to the field of laboratory analysis instruments, in particular to an intelligent automatic switching multi-channel gas chromatographic column connection device. Background technique [0002] The gas chromatograph uses a chromatographic column to separate the mixture first, and then uses a detector to sequentially detect the separated components. The diameter of the chromatographic column is several millimeters, which is filled with solid adsorbent or liquid solvent, and the filled adsorbent or solvent is called stationary phase. There is also a mobile phase corresponding to the stationary phase. The mobile phase is a gas that is neither reactive with the sample nor the stationary phase, typically nitrogen or hydrogen. The sample to be analyzed is injected into the mobile phase at the top of the chromatographic column, and the mobile phase carries the sample into the chromatographic column, so the mobile phase is also called carr...

AI Technical Summary

Problems solved by technology

[0003] The current gas chromatographs are only equipped with a single connection port for a chromatographic column, and different types of gas chromatographic columns are often used in frequent analysis and testing in the laboratory, and they need to be manually disassembled and reinstalled every time they are replaced, which is not conducive to The use of the chromatographic column is also inconvenient to wash and maintain the chromatographic column

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