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US 5,107,756 AGranted
Spray booth with alternative filtering systems
AssigneeReClaim, Inc.
InventorWilliam Diaz
Life of this patent
Estimating the term…
Abstract
An electrostatic paint powder booth apparatus having filters for recovery of overspray powder entrained in the air drawn from the housing in which workpieces are sprayed. The apparatus comprises interchangeable particulate filter systems in combination with alternative airflow paths, allowing for rapid changeover between successive runs of differing colors without intermixing of the different colors.
Claims25
A spray booth apparatus for spraying workpieces with particulate, comprising:
- spray housing;
- a primary particulate filter system for a predetermined high volume usage;
- a secondary particulate filter system for lower volume and special colors;
- first air passageway means for directing airflow from said spray housing through said primary particulate filter system;
- second air passageway means for directing airflow from said spray housing through said secondary particulate filter system;
- third air passageway means for directing airflow from said secondary particulate filter system to said primary particulate filter system to collect fine particulate not collected in said secondary particulate filter system;
- and
- means to direct air into either of said first and second air passageway means, said means to direct air being in a first position to cause airflow from said spray housing to pass through said primary particulate filter system for high volume runs and said means to direct air being in a second position to cause airflow from said spray housing to pass through said secondary particulate filter system for processing lower volume and special colors.
5 more elements
Spray booth apparatus for spraying workpieces with particulate having both cartridge and cyclone type particulate recovery systems, comprising:
- spray housing means for containing particulate sprayed;
- airflow diverter means for directing said particulate entrained airflow from said spray housing to either said cartridge type particulate recovery system or said cyclone type particulate recovery system;
- and
- damper means for isolating said cyclone type particulate recovery system from said spray booth apparatus, whereby said cyclone can be completely separated, cleaned and reattached to the remainder of said spray booth apparatus while said apparatus is in operation.
1 more element
A method for recirculating overspray particulate in an electrostatic spraying operation, comprising:
- spraying the workpiece with particulate;
- inducing particulate entrained airflow from the spray housing to a primary particulate filter system for high volume runs;
- separating out at least a portion of the air entrained particulate through the primary particulate filter system;
- blocking particulate entrained airflow from flowing directly from the spray housing to the primary filter system and causing the airflow to flow to a secondary particulate filter system for processing lower volume and special color runs;
- separating out at least a portion of the air entrained particulate through the secondary particulate filter system;
- after passing through the secondary filter system causing the particulate entrained airflow from the secondary particulate filter system to flow into the primary particulate filter system;
- and
- separating out a substantial remainder of the air entrained particulate from the air in the primary particulate filter system.
5 more elements
A method for recovering overspray particulate from a spray housing, comprising:
- connecting a dedicated primary filter system, dedicated to runs of a specific high volume color, in communication with said spray housing
- flowing said overspray particulate and air from said spray housing into said primary filter system, which primary filter system separates out at least a portion of the overspray particulate;
- connecting different dedicated primary filter systems to the spray housing, each dedicated to runs of a different specific high volume color, to correspond to the particular color of particulate to be sprayed;
- blocking the airflow from the spray housing to the primary filter system for runs of lower volume and special colors;
- flowing air from the spray housing to a secondary, non-dedicated filter system to the spray housing when running of lower volume and special colors to separate out a portion of the particulate;
- changing said dedicated primary filter system to a primary filter system dedicated to scrap collection;
- and
- drawing the remaining overspray particulate not separated out by said secondary filter system into said primary filter system dedicated to scrap collection removing more particulate from the air in the primary filter system.
5 more elements
Dependencies are inferred from the claim text.