Patent ID: 8104622
Filing Date: 2012-01-31
Classification: B04C

Abstract:
1. A cyclone, comprising: a separating section having a first open end with a larger radius and a second end having a smaller radius; an underflow outlet positioned at the second end of the separating section; an inlet head positioned at the first open end of the separating section, the inlet head further comprising; a feed inlet zone in the continuous, uninterrupted inner side wall of the feed chamber having an upstream end adjacent the inlet port and a downstream end extending away from said inlet port in a direction away from the top end wall, the feed inlet zone being defined by a volute having a volute axis extending around the continuous, uninterrupted inner side wall and including a first sector in which the volute is generally at right angles to the central axis and a second sector in which the volute extends around the continuous, uninterrupted inner side wall away from the top end wall and generally in the direction of the central axis a distance D, said second sector descending from the horizontal plane and extending in the direction of the central axis over a distance D ranging from 0.25×H wherein the distance from the volute axis to the central axis decreases with the progression of the volute around the continuous, uninterrupted inner side wall in a direction away from the inlet port.