a concentrator

Abstract

A concentrator disclosed in the present invention comprises: a box body, a water bath, a bracket, an airflow generator, a jacket condenser and a liquid level detection component; a groove is arranged inside the box body; the water bath is arranged in the groove; The bath is fixedly connected with the electric heating plate; the water bath is provided with water inlet and outlet; the bottom of the bracket is fixedly connected with the box; the airflow generator is hung and fixed on the bracket; the airflow generator includes: electric motor, impeller and drainage cover; The jacketed condenser is docked and fixed with the open end of the drainage hood; the jacketed condenser includes: condensing pipe, jacketed pipe, waste liquid collection tank and drain pipe; the liquid level detection component includes: photoelectric sensor, data acquisition card and acquisition control device; the photoelectric sensor is horizontally arranged in the box; the light emitting port of the photoelectric sensor is at the same height as the end point liquid level line. The concentrator has a compact structure, is easy to operate, significantly shortens the concentration process, and can accurately detect the end point liquid level of the concentrated sample.

Description

technical field [0001] The invention relates to the technical field of detection instruments, in particular to a concentrator. Background technique [0002] In a large amount of analysis work, especially in the field of environmental pollutants and food safety analysis, in order to obtain the residual amount of the target compound, it is necessary to pretreat the sample for inspection. The process mainly includes sample extraction (extraction), concentration, purification and Concentration and other basic steps. Among them, how to quickly and losslessly concentrate is a very critical part. The solution is composed of solute and solvent. Solution concentration is a technique to evaporate the solvent in the solution, reduce the submission of the solution, and increase the solute concentration of the solution. The evaporation speed of the solvent in the solution is affected by three factors: temperature, surface area, and air flow in the surface area. The higher the temperatu...

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Problems solved by technology

[0003] The concentrators in the prior art are bulky and inconvenient to carry and use; the effect of accelerating the volatilization of organic solvents through airflow is not obvious, and the concentration process takes a long time. The open water bath heating tank is used, and the effect of fast evaporation is poor, and the temperature of the water bath is also difficult to control , the end point level of the concentrated liquid cannot be accurately detected, resulting in a large error in the target volume of the concentrated liquid. At the same time, the existing concentrator adopts the structure of a single sample concentrating tube, and the work efficiency is low

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