Chemical experiment fuming cupboard with adjusting air draft and air distribution

Abstract

The invention discloses a chemical experiment fuming cupboard with adjusting air draft and air distribution. The chemical experiment fuming cupboard comprises an experiment operation part used for providing semi-closed space for conducting experiment operation, and a negative pressure air draft part used for providing negative pressure for the experiment operation part to conduct air draft. An air draft and air distribution adjusting mechanism is arranged between the experiment operation part and the negative pressure air draft part. The air draft and the air distribution adjusting mechanism is of a face-shaped structure. One face of the air draft and air distribution adjusting mechanism faces the experiment operation part, and the other face of the air draft and air distribution adjusting mechanism faces the negative pressure air draft part. A plurality of air draft and air distribution channels communicating with the experiment operation part and the negative pressure air draft part are arranged on the air draft and air distribution adjusting mechanism. The number and size of the air draft and air distribution channels located at different positions of the air draft and air distribution adjusting mechanism can be adjusted. According to the chemical experiment fuming cupboard, distribution of air draft flow can be adjusted, the cooperativity of air draft flow at different positions is better, and turbulent flow caused by mutual disturbance is avoided.

Description

technical field [0001] The invention relates to a chemical experiment fume hood with ventilation and air distribution adjustment, and belongs to the technical field of chemical laboratory fume cabinet products. Background technique [0002] In the laboratories of universities, colleges, chemical companies, etc., the ventilation system is an indispensable environmental protection and safety facility. For the possible generation of various harmful gases, such as odor, moisture, and flammable, explosive, and corrosive gases, etc. In order to protect the personal safety of the operator and prevent the harmful gas in the experiment from spreading outside the laboratory, the experimental operation usually needs to be performed in a fume hood. The ductless fume hood in the prior art can directly suck the polluted air and discharge the clean air after synchronous purification, so as to play the function of purifying the air instead of directly discharging the polluted air into the a...

AI Technical Summary

Problems solved by technology

[0003] The working mechanism of the fume hood exhaust in the prior art is relatively fixed. When the position of the harmful gas pollution source and the opening of the fume hood are changed, the exhaust port of the fume hood cannot be adjusted effectively, so that the air flow inside the fume hood is comparatively low. disorder, it cannot form an orderly airflow to bring harmful or corrosive gases directly out of the operating space, and cannot effectively understand the location of harmful gas pollution sources and the optimal setting of the operating port opening of the fume hood. Large harmful gases have the risk of escaping to the outside of the fume hood, and for highly corrosive gases, there is a risk of corroding the test equipment inside the fume hood and the operator's hands

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