Patent ID: 6290636
Filing Date: 2001-09-18
Classification: B04B

Abstract:
A helix centrifuge for continuous separation of free-flowing substances that have different densities, comprising:a rotor rotatable about a central axis and including a cylindrical drum, a conical drum and a front end wall;the rotor including a plurality of discharge ports in a wall of the conical drum for a heavy phase and a plurality of weirs in the front end wall of the rotor for a light phase;a rotatable scroll conveyor within the rotor for transporting the heavy phase toward the discharge ports, the scroll conveyor including a hollow shaft and a helix;a mixture feed pipe arranged coaxially within the hollow shaft and opening into a chamber within the hollow shaft in fluid communication with the helix;a plurality of nozzles each removably positioned within a respective discharge port in the conical drum, each nozzle having a selectively sized discharge aperture therein for discharge of the heavy phase from the centrifuge; anda non-restrictive discharge port in an end section of the conical drum for discharge of the heavy phase from the centrifuge.