STRAIGHT-FLOW CYCLONE Russian patent published in 2006 - IPC B04C3/00 B03B5/34 

FIELD: centrifugal apparatus or machines.

SUBSTANCE: straight-flow cyclone comprises housing provided with the flow rectifier mounted in the top section of the housing, Laval nozzle mounted in the intermediate section , and swirler mounted in the bottom cylindrical section of the housing, openings for discharging solid fractions provided in the converging part of the Laval nozzle, ring chambers that embrace the housing and are used for collecting and discharging light and heavy solid fractions. The cyclone has additional chamber for collecting and discharging slim. The chamber is mounted above the chamber for collecting and discharging light fraction and is open from above. All three chambers are interconnected to define common casing. The chambers for collecting and discharging the heavy and light solid fraction are additionally provided with tangential inlets for controllable supply of fluid, e.g. water. The diverging part of the Laval Nozzle is provided with openings for supplying light fractions and slim from the chamber for collecting heavy fraction back to the main stream. The rows of the openings in the converging and diverging parts are arranged in the planes perpendicular to the central axis of the Laval nozzle. The rectifier is made of cylindrical shell provided with openings arranged along the generatrix, deflecting plate secured to the bottom face of the shell, and is mounted coaxially above the outlet face of the Laval nozzle with a spaced relation of at least 0.1 of the diameter of the outlet face of the Laval nozzle, and is secured to the bottom section of the additional chamber so that the openings of the rectifier are arranged in the ring chamber for collecting and discharging the light fraction .

EFFECT: improved quality of enriching.

2 cl, 2 dwg