Patent ID: 7556732

Claim:
A must clarification machine of the type comprising a flotation vat in which must is introduced from grape pressing through a pipe driven by a pump, said vat being provided with means for injecting ambient air and making the impurities contained in the must float, the means comprising: a circular chamber placed at the center of the inside base of the vat; and a turbine positioned within the circular chamber that is actuated by a motor to rotate and thereby suck the must contained in the flotation vat, mix the sucked-in must with the ambient air, and expelling the mixture through holes made in the periphery of the circular chamber, wherein: the must and the ambient air is admitted through an opening made at a top section of the chamber provided with two concentric pipes, an external one of the two concentric pipes provided for the entry of must and an internal one of the two concentric pipes provided for the entry of the ambient air into the chamber, the internal pipe is provided with a broadened section at its bottom end which reduces the cross-section through which the must passes at a chamber inlet in order to create a vacuum which causes suction of the ambient air through the internal pipe by means of a “Venturi” effect, and a portion of the broadened section of the internal pipe is positioned concentrically within the external pipe.