Patent ID: 9084956
Filing Date: 2015-07-21
Classification: B01D

Abstract:
1. A dust collector for holding at least one main filter, the dust collector comprising: a housing comprising: a collection hopper; an inlet, an outlet, a dirty air plenum air plenum open to the inlet, an exhaust plenum open to the outlet, a clean air plenum disposed between the dirty air plenum and the exhaust plenum, a main air filter access port sealable by a main air filter door, and a monitor air filter access port sealable by a monitor air filter door; a first tube sheet separating the dirty air plenum from the clean air plenum within the housing, the first tube sheet configured to support the main filter within the dirty air plenum in a position exposed to the collection hopper such that collected particulate falling from the main filter drops into the collection hopper, the first tube sheet having a plurality of first filter apertures, each first filter aperture having a centerline; second tube sheet separating the clean air plenum from the exhaust air plenum within the housing, the second tube sheet having a plurality of second filter apertures, each second filter aperture having a second centerline, each second filter aperture aligned with a corresponding one of the first filter apertures, each first filter aperture aligned with a corresponding one of the second filter apertures, the first and second centerlines of each corresponding pair of filter apertures being aligned; and a sensor operable to detect pressure differential across a monitor air filter in one of the plurality of second filter apertures, the pressure differential indicative of a leak in a main air filter installed in the corresponding one of the first filter apertures in the corresponding pair of filter apertures; wherein the second tube sheet is located vertically above the first tube sheet.