Sampling fraction collection device and system

Abstract

The invention provides a sampling fraction collection device and system, which relate to the technical field of chromatographic sampling equipment. The sampling fraction collection device includes a switching valve group and a plurality of sampling mechanisms; each sampling mechanism includes a sample needle and a sampling mechanism The sample pipeline, the sample needle and the sampling pipeline are respectively connected with the switching valve group, the sample needle and the sampling pipeline of each sampling mechanism can be connected or disconnected under the control of the switching valve group, and the switching valve group is used to One of the multiple sampling pipelines is connected to the chromatographic column of the chromatographic device, so as to realize the injection of multiple sampling mechanisms to the chromatographic column of the chromatographic device in turn; at least one sample needle can be connected to the detector outlet and switching valve of the chromatographic device Select one of the groups to switch the connection. The present invention has both the functions of multi-needle rapid automatic sampling and sampling fractions, and can meet diversified experimental requirements through one device, reducing the cost investment of the equipment, and, compared with the form of the existing two devices, it also saves occupied space.

Description

technical field [0001] The invention relates to the technical field of chromatographic sampling equipment, in particular to a sampling fraction collection device and system. Background technique [0002] Liquid chromatography is one of the important means for the separation of complex mixtures that humans have mastered at present. As a high-precision, fast analysis and separation tool, liquid chromatography has become an increasingly important means of separation and preparation in the pharmaceutical industry, biochemical technology and fine chemical production. The autosampler of traditional technology has only one sample needle. In order to ensure the repeatability of the analysis, it is necessary to clean the sample needle before and after injection, which limits the injection speed and cannot be increased. The later-developed double-needle injector can solve this problem very well. The two sample needles work alternately, which can double the sampling speed. However, t...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sampling fraction collector to solve the problem that both the double-needle autosampler and the autosampling fraction collector have a single function in the prior art. The purchase of a double-needle autosampler and an autosampler fraction collector resulted in technical problems such as high cost of experimental equipment and large equipment footprint

Images