Quick change powder coating spray system

A powder recovery system for a powder coating system, comprising:

• a cyclone separator having a powder outlet;
• a vacuum source;
• and
• a powder extraction interface between said cyclone outlet and said vacuum source;
• said interface receiving powder from said cyclone outlet;
• said vacuum source transferring powder in said interface to a collection device.

A vacuum receiver for a powder recovery system, comprising:

• a receiver canister;
• and
• a support frame for said canister;
• said canister being mounted for selected rotation about an axis to facilitate cleaning the canister.

A quick change powder coating spraying system comprising:

• a generally cylindrical powder spray booth comprising a canopy;
• a generally circular booth floor that rotates relative to said canopy;
• said canopy being suspended over said floor;
• a powder overspray extraction duct disposed in said booth to draw powder from said rotating floor during a spraying operation;
• a cyclone separator that receives powder from said extraction duct;
• and
• a vacuum conveyance system for vacuum conveying powder from said cyclone separator to a powder feed hopper.

A powder coating application system, comprising:

• a powder spray booth;
• said booth comprising a canopy wall structure and a floor that is rotatable relative to said canopy wall structure;
• a powder overspray extraction device for extracting powder overspray from said floor to a first collection device;
• and
• a vacuum recovery system that conveys powder overspray from said first collection device to a powder supply.

A method for cleaning a vacuum line for a powder recovery system, comprising:

• producing a vacuum in a vacuum line connected between a first powder collection device and a second powder collection device;
• using said vacuum to convey powder from said first powder collection device to said second powder collection device;
• and
• cleaning said vacuum line by passing at least one wiping element through said line under force of said vacuum.

A powder coating application system, comprising:

• a powder pump having a powder inlet and a powder outlet;
• a powder spray gun having a powder inlet and a nozzle;
• and
• a powder feed hose that connects said pump powder outlet with said spray gun powder inlet;
• said powder pump having a powder flow path that extends in a single direction from said powder inlet to said powder outlet.

A powder overspray collection system, comprising:

• a powder spray booth;
• at least one powder spray gun disposed in said booth for spraying an object;
• a powder supply for supplying powder to said spray gun;
• said spray booth comprising a canopy and a floor that rotates relative to said canopy;
• and
• a powder overspray collection system that transfers powder overspray from said spray booth to said powder supply;
• said collection system comprising:
• a powder overspray extraction duct that draws powder overspray from said rotating floor and transfers said powder overspray to a powder separation device;
• and
• a vacuum source that conveys powder overspray from said separation device to said powder supply.

A powder coating spray system comprising:

• a spray booth that at least partially encloses a spray area in which powder overspray is produced during a spraying operation;
• a powder feed apparatus that supplies powder to spray guns in said booth;
• a powder extraction apparatus that removes said powder overspray from said booth and transfers said powder overspray to a first collection device;
• and
• a vacuum source connected to said first collection device to transfer continuously powder overspray from said first collection device to a second powder collection device.