Patent ID: 6460830
Filing Date: 2002-10-08
Classification: B01F,C02F,Y02W

Abstract:
Device for stirring and aerating a liquid and eliminating the foam in a tank for treating said liquid, comprising inside said tank:a vertical sheath extending in a part of the height of said tank and comprising, in its upper part, at least a first opening providing an entry passage for said liquid and, near the bottom of said tank, at least a second opening providing an exit passage for said liquid, a funnel located around the upper part of said sheath and connected to said sheath, the upper edge of said funnel defining with a wall of said tank a free space for the passage of said liquid, a main propeller located inside said sheath below the bottom of said funnel, a vertical shaft driven in rotation, extending inside said sheath above said propeller and driving the latter in rotation, an anti-vortex means located inside said sheath, below said propeller, means for injecting a gas under pressure in said sheath, below said anti-vortex means, and uniquely static stirring means for stirring said liquid by turbulence inside said sheath, said static stirring means being located below said antivortex means.