A detection device for measuring the concentration of formaldehyde in mixed liquid

Abstract

The invention relates to the field of formaldehyde concentration detection, in particular to a detection device for measuring the concentration of formaldehyde in a mixed liquid, which includes a housing, a clamping mechanism, a sampling mechanism, a protection mechanism and a sealing mechanism; the sampling mechanism faces away from the clamping mechanism Sliding in the direction of the sampling mechanism to keep the sampling mechanism away from the shell and the protection mechanism, so as to facilitate the sampling of the mixed liquid and prevent the mixed liquid from contaminating the shell and the protection mechanism; the sampling mechanism drives the protection mechanism to move, so that the protection mechanism moves closer to the clamping mechanism Rotate in the direction of the sampling mechanism to facilitate the sampling of the sampling mechanism. After the sampling mechanism takes a sample, the sampling mechanism is protected, and the protection mechanism is used to separate the sampling mechanism from the outside world to prevent the mixed liquid contaminated on the sampling mechanism from dripping to other places; through the sealing mechanism The sampling mechanism is sealed to prevent formaldehyde in the mixed liquid from overflowing, which facilitates the accuracy of detection data and reduces the impact of formaldehyde on the health of sampling personnel.

Description

technical field [0001] The invention relates to the field of formaldehyde concentration detection, in particular to a detection device for measuring the concentration of formaldehyde in mixed liquid. Background technique [0002] Formaldehyde, a colorless and irritating gas, chemical formula HCHO or CHO, molecular weight 30.00, also known as formaldehyde. Colorless, irritating to human eyes and nose. The relative density of gas is 1.067 (air=1), and the density of liquid is 0.815g / cm 3 (-20°C). Melting point -92°C, boiling point -19.5°C. Soluble in water and ethanol. The concentration of the aqueous solution can reach up to 55%, usually 40%, which is called formaldehyde water, commonly known as formalin (formalin). It can be produced by the dehydrogenation or oxidation of methanol under the catalysis of silver, copper and other metals, and it can also be separated from the oxidation products of hydrocarbons. It can be used as a raw material for phenolic resin, urea-for...

AI Technical Summary

Problems solved by technology

[0003] However, when testing the solubility of formaldehyde in the mixed solution, when taking a certain amount of formaldehyde for testing with the device, the mixed solution will be accidentally stained on the hands of the sampling personnel, which will affect the quality of the sample. and the personnel who take the sample will put the mixed solution in the open sampling bottle, because formaldehyde has a pungent smell of aldehyde, which can be smelled at a low concentration, so when carrying the sampling bottle, it will make the The sampling staff has been smelling the smell of formaldehyde, which will make the sampling staff feel unwell

Images