Chromatograph

Abstract

The chromatograph comprises a machine body, a control panel is fixedly installed at the front end of the machine body, an extension block is fixedly installed at the lower end of the machine body, a wheel shaft is movably arranged at the center of the extension block in a penetrating and inserting mode, and moving wheels are fixedly installed on the front side and the rear side of the wheel shaft. And a fixing mechanism is arranged at the lower end of the machine body. When in use, a user sucks a test sample into the sample tube, then penetrates the sample tube into the sample introduction tube, extrudes the elastic sheet to a deformation state, fixes the sample tube through elastic force, and meanwhile, the sample tube penetrates through the central position of the rubber ring, and the rubber ring is used for performing clinging and sealing work; then an extrusion block is driven by an extrusion rod to move to extrude the sample into the sample injection pipe, air is prevented from entering the sample injection pipe during injection through sealing of a rubber ring, and the problem that follow-up detection is inaccurate due to the fact that the air is mixed into the injected sample is solved.

Description

technical field [0001] The invention relates to the field of chromatograph equipment, in particular to a chromatograph. Background technique [0002] A chromatograph is a device used for chromatographic separation and analysis. Including sampling system, detection system, recording and data processing system, temperature control system and mobile phase control system, etc. Modern chromatographs are characterized by stability, sensitivity, versatility and a high degree of automation. There are gas chromatography, liquid chromatography and gel chromatography. These chromatographs are widely used in the analysis of chemical products and certain content of polymer materials, and gel chromatography can also determine the molecular weight and distribution of polymer materials. [0003] When the existing chromatograph is in use, its gas path is prone to air leakage when it is used for a long time. When the air leaks, the carrier gas cannot drive the sample into the detector for ...

AI Technical Summary

Problems solved by technology

[0003] When the existing chromatograph is in use, its gas path is prone to air leakage when it is used for a long time. When the air leaks, the carrier gas cannot drive the sample into the detector for detection under normal impact force, which affects the detection effect, and the air leakage It will cause a lot of waste of carrier gas. At the same time, the sample enters through the sample tube when the chromatograph is testing. , thus affecting the test results, and with the continuous use of the carrier gas, the internal pressure of the carrier gas cylinder will decrease, which will affect the impact force of the carrier gas, so a chromatograph is urgently needed to solve the above problems

Images