Patent ID: 9687767
Date: 2017-06-27
CPC Classifications: B01D

Claim:
1. An apparatus for filtering particulates from air, the apparatus comprising: a housing; at least one filter cartridge in the housing and defining therein 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 into 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 that frees the air of the particulates; 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 to the particulates-collection chamber or to the outer compartment of the filter chamber; structure forming in the particulates-collection chamber at least one annular or partially circular closable opening to the outer compartment of the filter chamber; a seal in the housing and inflatable to close the opening.