A dust removal device

Abstract

The invention provides a dust removal device, which comprises multiple stages of filter assemblies for filtering dust stage by stage according to grain sizes of dust. The multiple stages of filter assemblies include a first filter assembly used for filtering small-particle dust, a second filter assembly arranged at the downstream of the first filter assembly and used for filtering large-particle dust and a third filter assembly arranged at the downstream of the second filter assembly and used for filtering medium-particle dust, wherein the grain size of the small-particle dust is less than 10 micrometers, the grain size of the medium-particle dust is less than 10 to 100 micrometers, and the grain size of the large-particle dust is greater than 100 micrometers. Because the dust removal device disclosed by the invention is provided with a fan and a wind guide unit, the dust can get into a dust removal chamber in the form of a cyclone, that is, the dust is centrifuged, and is then filtered stage by stage by the multiple stages of filter assemblies arranged in the dust removal chamber, consequently, the dust can be thoroughly filtered, the filtering efficiency is greatly increased, and the effect is remarkably enhanced.

Description

technical field [0001] The invention relates to the field of dust removal, in particular to a dust removal device. Background technique [0002] Fluidization equipment or pneumatic conveying devices are widely used in pharmaceutical, food, chemical, metallurgical and other fields. The gas discharge process of these devices is mixed with a large amount of dust. At present, filter devices are used in various industries for the treatment or recovery of exhaust gas dust. [0003] During the gas discharge process, a large amount of dust is intercepted on the filter surface. With the increase of dust interception, the filter resistance will gradually increase. The increase of filter resistance will cause the ventilation volume of the filter to gradually decrease, thereby reducing the filtration efficiency. [0004] In order to solve this problem, the methods commonly used at present are: increasing the filter area, using mechanical dust removal devices and using pneumatic dust rem...

AI Technical Summary

Problems solved by technology

Problems in the methods commonly used at present: 1) The general dust removal effect is not good enough and cannot meet the expected requirements

2) Increase the filter area and cause waste of filter materials

3) Mechanical dust removal cannot achieve the purpose of effectively removing dust on the surface of the filter

4) Pneumatic dust removal requires positive pressure air to be blown in during dust removal. In the multi-filter device, due to the large cavity, it cannot provide effective back-blowing air for the filter that needs back-blowing, not only failing to achieve the expected effect, but also breaks filter continuity

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