Full-automatic intelligent formaldehyde detector for realizing liquid flow based on peristaltic pump

Abstract

The invention discloses a full-automatic intelligent formaldehyde detector for realizing liquid flow based on a peristaltic pump. The full-automatic intelligent formaldehyde detector for realizing liquid flow based on the peristaltic pump needs the following materials and instruments: distilled water, test liquid, a reagent, the peristaltic pump, a pipette, five containers, a water bath kettle, a test tube, a spectrophotometer and a programmable logic controller. A liquid (distilled water, reagent and mixed liquid) circulation system with 20 peristaltic pumps as core components is installed in an intelligent detector box body in a combined mode, and therefore a device for achieving automatic circulation of a small amount of liquid according to the national standard for formaldehyde detection is achieved. On the basis of the linear relation between the flow of the peristaltic pump and the working time, circulation of a small amount of flow is automatically controlled by controlling the switching time of the peristaltic pump. The intelligent formaldehyde detection process can be automatically carried out, manual intervention is not needed, the manual working time is greatly shortened, and the stability of a detection result is improved.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde detection, and specifically relates to a fully automatic formaldehyde intelligent detector based on the use of a peristaltic pump to realize liquid flow. Background technique [0002] Wood-based panels are widely used in modern construction and decoration industries. The resulting environmental pollution, especially the release of formaldehyde gas, has a great impact on people's health. One of the important indicators of quality, the climate chamber method is currently the most common method used to detect the formaldehyde content of wood-based panels and its volatilization process. This method requires placing a sample of wood-based panel products in a climate chamber and detecting the formaldehyde volatilized in the climate chamber Many steps in the formaldehyde detection process need to transfer several milliliters (10ml-25ml) of liquids (mixtures, reagents, distilled water) from one conta...

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Problems solved by technology

[0003] However, the climate chamber method requires a cumbersome manual operation process in the detection process, and according to the current national standards, the detection cycle is as long as 10-28 days, and the accuracy of transferring liquid is difficult to grasp during the manual operation process and the measurement results are unstable. Manual operation takes a long time

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