Patent ID: 8435348
Filing Date: 2013-05-07
Classification: B01D,B05B,Y02P

Abstract:
1. A paint booth which comprises a spray chamber accommodating an object to be painted and a purifier for removing paint mist contained in air in the spray chamber, the purifier comprising: a water tank disposed in the spray chamber; a pump which draws up water in the water tank; a water cord formation mechanism comprising a water case for accommodating the water drawn up by the pump, the water case comprising a bottom wall formed with a plurality of nozzles, each of the nozzles comprising an inlet, a tubular portion protruding downward from the bottom wall in such a manner that the inside diameter of the tubular portion is reduced downward from the inlet, and a circular outlet opening at the lower end of the tubular portion, the water which drops in straight lines from the outlets forming a plurality of parallel water cords; a barrier member comprising a vertically extending wall portion; a splashguard member located above a water surface of the water tank and opposite and just below the nozzles and comprising a water receiving surface which declines from an upper end portion in front of the water cords toward a lower end portion near the barrier member; an exhaust chamber separated from the spray chamber by the barrier member; an exhaust mechanism comprising an exhaust fan for discharging the air in the spray chamber to the outside through the exhaust chamber, the exhaust mechanism being configured to produce airflow such that the air containing the paint mist in the spray chamber contacts the water cords; a sludge removal mechanism comprising a conveyor disposed in the water tank and configured to discharge paint sludge floating near the water surface in the water tank to the outside of the water tank, the conveyor having first and second chains and scrapers mounted on the first and second chains, a water shedder which is located above the conveyor positioned below the splashguard member and extends along the first and second chains of the conveyor, the water shedder comprising a top portion which is located below a gap between the barrier member and the splashguard member, a first guide surface which declines from the top portion toward the first chain, a first lower edge which is located above the first chain and extending along the first chain and configured to drop water from the first guide surface into a vicinity of the first chain, a second guide surface which declines from the top portion toward the second chain, and a second lower edge which is located above the second chain and extending along the second chain and configured to drop water from the second guide surface into a vicinity of the second chain, wherein the first and second guide surfaces are configured to direct the drop water in separate directions.