Flakt Aktiebolag

Ab Svenska Flaktfabriken

Osten Maatta

Lennart Gustavsson

Jan-Mats Eneroth

Roland Soderholm

A wet separator for purifying polluted conditioning air and separating solid and semi-liquid particles therefrom, especially paint particles in the outlet of a spray painting booth. For this purpose, there is a series of outlets with surfaces converging in the direction of flow into a neck or throat which increases the speed of passing media and thus achieves mixing of air, water and pollutants. According to the invention, beyond the first outlet in the direction of flow there is a dispersing chamber for further mixing and atomizing the mixture, which chamber terminates in the direction of flow in the second outlet, which is designed as a venturi with a more extensively throttled venturi opening defined by a flange extending into said opening. The outlets may be interconnected by a guiding surface, on which a dispersing stream of water droplets, air and pollutions impinge with a flat angle of impact adjacent to the second outlet at the lower end of the guiding surface. The impact area provides a special disintegration zone in front of the second outlet serving as a sound absorbing cover. Alternatively intermediate outlets may cause tortuous flow through the dispersing chamber providing an extended path which retards transmission of noise from the final outlet back to the booth.

Wet separator for and method of purifying polluted conditioning air

Floor for a spray paint booth

Venturi wall for wet separators and the like

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.

Spray chamber including a wet separator

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Vaxjo, Sweden

Osten Maatta