Spray chamber including a wet separator

Abstract

A paint-spray chamber having a grate-like floor with an outlet for particle-laden air below said floor, said outlet comprising water reservoirs along the periphery of the spray chamber and a venturi outlet disposed centrally of said chamber between the water reservoirs. Water is continuously supplied to said reservoirs to fill the reservoirs to overflowing and cause the water to flow into said venturi so as to provide a body of water underlying the floor. The venturi is formed by opposed venturi sides converging toward the central axis of the venturi outlet in the direction of the gas flow to a venturi throat. A pair or a series of pairs of guide plates extend inwardly from said opposite venturi sides adjacent said reservoir means and converge toward one another in the direction of air flow with a greater angle of convergence than said venturi sides and terminate in one or more noise-muffling zones along said venturi axis above said throat. Water flows from said reservoirs over said guide plates, along said plates and into said noise-muffling zones to cause the air and water flows to blend and mix together in said zones. A separation chamber is below said reservoirs to receive the particle-laden air and water. The particle-laden air and water is discharged to impinge against a film of water in said separation chamber or into a reservoir of water in said separation chamber opposite the venturi outlet.