Nordson Corporation

Scott T Wilson

Richard D Burke

Kenneth A Kreeger

Phillip R Barnett

An apparatus for dislodging particulate powder material from the wall of a cartridge filter in the powder recovery unit of a powder spray system comprises a deflector plate mounted at the open top of the cartridge filter in the path of filtered air passing therethrough, and an air jet valve which directs a jet of air downwardly onto the deflector toward the open top of the cartridge filter so that the filtered air within the interior of the cartridge filter is pressurized and thereby reverses the direction of air flow through the filter wall to dislodge powder particles collected therefrom.

Apparatus for cleaning cartridge filters in a powder spray system

A powder spray booth including a tunnel through which product is conveyed to spray guns mounted adjacent the tunnel to spray charged particles into the tunnel and a fan and final filters located below the tunnel. A powder collector consisting of cartridges and a hopper below the cartridges is removably positionable at the downstream end of the tunnel.

Powder booth

A powder spray system including a powder spray booth through which product is conveyed past a spray gun mounted adjacent the booth to spray charged particles into the booth. A chamber containing a fan and final filters is located beneath the booth. A movable powder collector having a plurality of filter cartridges and a powder collection hopper is movable beneath the booth into sealed engagement with the hopper and with the chamber containing the fan and final filters. Mounted upon the powder collector there is a feed hopper into which a transfer pump is operable to pump powder from the collection hopper. A movable sieve is mounted upon the inlet end of a hose which supplies powder from a fluidizing bed at the bottom of the powder collection hopper into the transfer pump. An overflow outlet opening interconnects the feed hopper and the powder collection hopper, and the pump flows are adjusted so that powder is maintained in the feed hopper at the level of the overflow outlet opening.

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Bay Village, OH, United States of America

Scott T Wilson