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US 7,070,134 B1Granted
Centrifugal grinding mills
AssigneeHicom International Pty Limited
InventorDavid Ian Hoyer
Life of this patent
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Abstract
The present invention relates to a centrifugal grinding mill comprising a vertical axis of revolution (1), a nutating axis (2) intersecting axis (1) at a point of nutation symmetry (3), a grinding chamber (4) symmetrical about axis (2) connecting with feed passage (5) at its upper end and having discharge openings (6) of a screening element (26) located within a plane area aligned normal to, symmetrical with, and intersected by the axis (2), and adjacent the plane containing the maximum diameter of the grinding chamber (4).
Claims23
A centrifugal grinding mill comprising:
- a grinding chamber having a longitudinal axis of symmetry, the grinding chamber being constrained and adapted to permit nutating motion of the axis of symmetry about a relatively stationary axis of the grinding mill, said axes intersecting at a point of nutation symmetry;
- a support member on which the grinding chamber is supported;
- a feed passage in communication with and directed towards the grinding chamber;
- driving means operatively coupled to the grinding chamber, and designed to drive the grinding chamber to effect the nutating motion;
- and
- a screening element located internally of the grinding chamber and being configured to permit particles of ground product to discharge from the chamber,
- wherein the screening element includes a screening surface oriented substantially normal to the longitudinal axis of the grinding chamber wherein ground product is discharged from the chamber in a generally axial direction.
4 more elements
A centrifugal grinding mill comprising:
- a grinding chamber having a longitudinal axis of symmetry, the grinding chamber being constrained and adapted to permit nutating motion of the axis of symmetry about a relatively stationary axis of the grinding mill, said axes intersecting at a point of nutation symmetry;
- a support member on which the grinding chamber is supported;
- a feed passage in communication with and directed towards the grinding chamber;
- driving means operatively coupled to the grinding chamber, and designed to drive the grinding chamber to effect the nutating motion;
- and
- a screening element located internally of the grinding chamber and being configured to permit particles of ground product to discharge from the chamber,
- wherein the ground product flows through of the screening element, and discharges from the grinding chamber through a tubular passage which passes through the feed passage adjacent the point of nutation symmetry.
4 more elements
Dependencies are inferred from the claim text.