Baghouse with rotating sweep arm

Apparatus for separating particulate matter from a gas stream, said apparatus comprising:

• a cylindrical housing;
• a substantially horizontal, circular partition disposed interiorly of said housing, thereby defining a first chamber above said partition and a second chamber beneath said partition, said partition having a plurality of uniform, circular openings therethrough, said circular openings being arranged in N concentric rings outwardly from the center of said partition;
• an inlet conduit connected to said second chamber for directing a particulate laden gas stream into said second chamber;
• an outlet conduit communicating with said first chamber to exhaust gas therefrom;
• a plurality of vertically arranged cylindrical filters disposed in said second chamber and having open upper ends secured to said openings through said partition;
• a cleaning sweep arm pivotally mounted within first chamber to rotate in a circular orbit over said partition;
• said cleaning sweep arm comprising a cylindrical barrel, a rotatable valve body, and N discharge ports aligned with said N concentric rings of the openings through said partition;
• drive means coupled to said cleaning sweep arm to rotate said arm in a circulate orbit over said partition;
• pressurized air supply means connected to said cleaning sweep arm to supply pressurized cleaning air thereto;
• and
• cam control means positioned and arranged with respect to said valve body to cause cleaning air to be delivered through one of said discharge ports during a full revolution of said arm over said partition to thereby clean the filters, one at a time, in one of said concentric rings, and then to shift said valve body to cause cleaning air to be delivered through another of said discharge ports during the subsequent revolution of said arm.