A laboratory exhaust device

Abstract

The invention relates to the technical field of laboratory ventilation devices, in particular to a laboratory ventilation device, which includes a fume cabinet body, a workbench is arranged in the middle of the fume cabinet body, and a sink and a faucet are arranged on the workbench. The front end of the table is provided with a sealed glass door, and the upper part of the fume hood is provided with an exhaust assembly. The exhaust assembly includes an exhaust mechanism and a ventilation pipe connected to the upper end of the exhaust mechanism. Restriction components, installation slots are provided on both sides of the upper part of the fume hood, and a lifting device that drives the sealed glass door to lift is installed in the installation slots. The lower end of the exhaust assembly is detachably installed with a filter screen, and a clean filter screen is installed above the workbench. The bottom of the fume hood body is also provided with a plurality of walking components, and the walking components include a telescopic device and rollers installed on the output end of the telescopic device.

Description

technical field [0001] The invention relates to the technical field of laboratory ventilation devices, in particular to a laboratory ventilation device. Background technique [0002] Fume hoods are an integral part of laboratory ventilation design. In order to prevent laboratory workers from inhaling or ingesting some toxic, pathogenic or unknown toxic chemicals and organisms, there should be good ventilation in the laboratory. To prevent absorption of some vapours, gases and particulates (smoke, soot, dust and aerosols), contaminants must be removed using fume hoods, fume hoods or local ventilation. [0003] The most important function of the fume hood is the exhaust function. In the chemical laboratory, various harmful gases, odors, moisture, and flammable, explosive, and corrosive substances are produced during experimental operations. In order to protect the safety of users To prevent the pollutants in the experiment from spreading to the laboratory, a fume hood should...

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Problems solved by technology

[0003] The most important function of the fume hood is the exhaust function. In the chemical laboratory, various harmful gases, odors, moisture, and flammable, explosive, and corrosive substances are produced during experimental operations. In order to protect the safety of users To prevent the pollutants in the experiment from spreading to the laboratory, a fume hood should be used near the pollution source. In the past, the number of fume hoods used was small, and they were only used in experiments with particularly harmful and dangerous gases and large amounts of heat.

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