Dustex Corporation

William J Klimczak

Robert R Edwards

An air filtration apparatus for industrial applications is disclosed, which includes a front vertical wall which can be positioned to form one side of a work station. The interior of the housing is divided between an upper dirty air chamber which receives the contaminated air from the work station, and a lower clean air chamber. The dividing wall between the two chambers is in the form of a transverse panel which is inclined with respect to the horizontal, and a plurality of hollow pedestals extend upwardly from the transverse panel. Cartridge type filters are mounted upon the pedestals, with the open ends of the filters facing downwardly and being pressed against the pedestals by hand operated clamps so as to form a seal therebetween. A reverse pulse air cleaning system is also provided, which periodically injects a pulse of air upwardly into the lower open end of each of the filters, so as to periodically clean the collected particulates from the outer surfaces of the filters. The removed particles then drop onto the inclined transverse panel and slide therealong toward to the front vertical wall of the housing, where they may be readily removed.

Air filtration apparatus for the control of industrial air pollution

A dust collecting apparatus wherein a plurality of elongate filter elements are periodically cleaned by a reverse pulse cleaning system which directs a reverse pulse of air through the open end of each filter element so as to remove contaminants which have collected on its external surface. The reverse pulse cleaning system has an air delivery pipe above each of the filter elements, and each air delivery pipe includes an air delivery nozzle assembly which includes at least one pair of transverse pipe sections which are transversely aligned and extend in opposite directions from the air delivery pipe, to define a cross-like configuration in plan view. A plurality of apertures are disposed in a linear line along the air delivery pipe, and at least one aperture is disposed in each of the transverse pipe sections. By this arrangement, the cross-sectional configuration of the reverse pulse of air entering into the top of each filter element may be predetermined, so as to ensure that the pulse properly impacts the interior of the filter element and effectively removes the collected contaminants.

Dust collecting apparatus having reverse pulse filter cleaning capability

A method of retrofitting a dust collecting apparatus is disclosed which has a plurality of filter bags arranged in a number of rows, and which also has a reverse pulse cleaning system. In accordance with the present invention, selected bags are rendered inactive, and the active and inactive bags are arranged in a predetermined pattern so that the active bags are shielded by the inactive bags from the particulate matter expelled from the active bags of adjacent rows during the reverse pulse cleaning operation. This shielding permits a greater volume of air to be pulsed into the active bags during cleaning, which greatly increases the degree to which the active bags are cleaned.

Method of retrofitting a dust collecting apparatus

This invention relates to self cleaning dust collectors having top mounted filter cartridges. The top mounted filter cartridges include a top mounting plate having an annular flange and an outer peripheral lip to support and carry a sealing gasket. The outer peripheral lip provides lateral support for the gasket under the pressures involved during the operation of the dust collector, and it also serves to prevent over compression of the gasket. The dust collector is further provided with a reverse pulse air cleaning system which includes an air delivery pipe located above the filter cartridges, and with the air delivery pipe being spaced from the dividing wall a sufficient distance to allow for upward removal and easy replacement of the filter cartridges without extensive assembly and disassembly of the dust collector.

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Charlotte, NC, United States of America

William J Klimczak