Multi-stage filtering device used for removing oil fume

Abstract

The invention discloses a multi-stage filtering device used for removing oil fume. The multi-stage filtering device comprises a shell (1) with an opening formed in the lower portion, and a fan (6) mounted in the shell (1) and used for providing negative pressure suction; an oil fume channel is formed between the fan (6) and the opening of the shell (1); an oil fume collecting hood (2), a steam-liquid barrier assembly (3), at least one steam-liquid separating assembly (4) and a multi-stage filter (5) are sequentially arranged on the oil fume channel from bottom to top and connected with the shell (1); a steam-liquid isolation cavity is formed between the steam-liquid barrier assembly (3) and the steam-liquid separating assemblies (4), a steam-liquid separating cavity is formed between the steam-liquid separating assemblies (4) and the multi-stage filter (5), and a cavity where the multi-stage filter (5) and the fan (6) are located is a filtering cavity. The multi-stage filtering device is simple in structure, high in oil fume removing efficiency and easy to disassemble, assemble and maintain.

Description

technical field [0001] The invention relates to oil fume separation and purification technology, in particular to a multistage filter device for removing oil fume. Background technique [0002] Restaurants, restaurants, hotels and other catering industries and households produce a lot of fume and exhaust gas during the process of cooking and processing food. In addition to water vapor, oil mist and fine particles, the fume also contains volatile substances and odorous gases. In order to purify the air and reduce pollution, the State Environmental Protection Administration promulgated the "Catering Fume Emission Standard" (GB18483-2001) in 2000, stipulating that catering units must install soot purification equipment and meet the specified emission requirements. [0003] In order to filter the pollutants and odorous substances in the kitchen fume and improve the quality of the fume exhaust air, some people have proposed a variety of fume filtration and purification technologi...

AI Technical Summary

Problems solved by technology

[0003] In order to filter the pollutants and odorous substances in the kitchen fume and improve the quality of the fume exhaust air, some people have proposed a variety of fume filtration and purification technologies: such as using chemical solvents for cleaning, but replacement and waste water treatment are also difficult problems; another example is the use of electrostatic The treatment device can filter the particles in the oil fume, but it is not easy to remove the air oil component. When the electrostatic plate has oil stains attached to the surface, it will gradually reduce the ability of the electrostatic treatment device to absorb the particles in the oil fume

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