FILTER APPARATUS FOR EXTRACTING FINE DUST FROM AIR

摘要

The invention relates to a device for extracting and filtering air laden with fine dust, having at least one filter cartridge which is arranged in a filter chamber and which has an in particular cylindrical, vertical filter wall surrounding an internal cartridge hollow chamber, which filter wall is impinged on by the laden air from the outside such that the fine dust is deposited on the outer surface of the filter wall, and having compressed-air nozzles which are arranged in the cartridge hollow chamber and by means of which the deposited fine dust is blown off the filter wall outer surface, such that the blown-off fine dust passes downward into at least one fine-dust collecting chamber in order to be removed from there, wherein there is connected to the fine-dust collecting chamber a dust line which serves for the discharge of the fine dust and which leads to a fine-dust separator by means of which the fine dust is removed from the air, and wherein a return line leads from the fine dust separator to the fine-dust collecting chamber or to the untreated-air side of the filter chamber, through which return line the air that has had the fine dust substantially removed from it passes back, in a circuit, to the fine-dust collecting chamber or to the untreated-air side of the filter chamber.

主权项

1. An apparatus for filtering particulates from air, the apparatus comprising:
a housing; at least one filter cartridge in the housing and defining a filter chamber; a vertical and cylindrical filter wall in the housing and defining an inner cartridge compartment and an outer unfiltered air compartment; means for blowing particulate-laden air in the outer compartment from outside against an outer surface of the filter wall so that the particulates accumulate on the outer surface of the filter wall; compressed air nozzles in the inner cartridge compartment that blow the accumulated particulates outward off the filter wall outer surface so that the blown-off particulates move downward in the outer compartment into at least one particulates-collection chamber therebelow; a particle/gas separator; a particulates conduit for transporting air and the particulates from the particulates-collection chamber to the separator (18) that frees the air of the particulates; and a return line extending from the separator to the particulates collection chamber or to the outer compartment of the filter chamber such that air essentially freed of the particulates returns in the circuit to the particulates-collection chamber or to the outer compartment of the filter chamber.