All-steel ventilation cabinet

Fume hoods are essential safety equipment in laboratories, primarily used for expelling indoor waste gases. They are commonly used laboratory devices in situations where harmful gases need to be removed and for the cleaning and waste disposal required during experiments.
The primary function of a fume hood: The main function of a fume hood is exhaust. In a chemical laboratory, harmful gases, odors, as well as flammable, explosive, and corrosive substances are produced during experiments. To ensure the safety of users and prevent the spread of pollutants from experiments into the laboratory, fume hoods are used near the source of pollution. In the past, fewer fume hoods were used, only in experiments involving harmful and dangerous gases or those producing a large amount of heat. Fume hoods solely serve as auxiliary functions to the experimental table.
The purpose of using a fume hood is to exhaust harmful gases generated during experiments, protecting the health of the experimenters. This means it must have high safety and operability, which requires the fume hood to possess the following functions:
Release Function: The system should be equipped with an institution that dilutes harmful gases generated inside the fume hood by absorbing external air from the cabinet, before discharging them outdoors.
Non-backflow feature: The function should ensure that the airflow generated by the exhaust fan within the fume hood does not reverse and flow back into the room. To achieve this function, it is preferable to connect one fume hood to one exhaust fan with a single pipeline. For those that cannot be connected with a single pipeline, they should only be connected in the same room on the same floor. The exhaust fan should be installed as close to the end of the pipeline (or at the top of the floor) as possible.
Isolation Feature: The fume hood should be equipped with a non-slip glass viewport in front to separate the inside from the outside of the hood.
Supplementary Feature: Must have a channel or alternative device to draw in air from outside the fume hood when expelling harmful gases.
Flow control function: An intake speed is required to prevent harmful gases from escaping.
Heat and acid-base corrosion resistance: Some fume hoods require the installation of electric furnaces, and some experiments produce a large amount of corrosive acid and alkali gases. The countertops, back panels, side panels, and selected water nozzles, gas nozzles, etc., of the fume hood should all have corrosion resistance.