STATIC CLASSIFIER

摘要

Classifier (10, 100, 200) which is configured to classify air-entrained, crushed particulate material received from a pulveriser into a fine fraction which is expelled from the classifier (10) and a coarse fraction which is returned to the pulveriser for further crushing. The classifier (10) includes a plurality of adjustable inlet blades (37) which are arranged partially above an inlet (20) leading into a classification zone (19), an angle of the blades (37) being adjustable through manipulation of a blade adjustment mechanism (39) in order to optimise particle flow conditions inside the classifier (10). Furthermore, the classifier (10) includes a plurality of inclined pre-swirl vanes (47) which are disposed below the inlet blades (37), each vane (47) having a curved body. The classifier (100) includes a part conical member (102) which is suspended below an operatively upper exit (31) leading from the classification zone (19).

主权项

1. A classifier for use with a pulveriser which is configured to crush raw material, the classifier being configured to classify air-entrained, crushed particulate material received from the pulveriser into a fine fraction which is expelled from the classifier and a coarse fraction which is returned to the pulveriser for further crushing, the classifier including:
a housing defining:
an inward classification zone;an inlet through which the entrained crushed particulate material received from the pulveriser enters the classification zone; andan operatively upper exit and an operatively lower outlet which lead from the classification zone; a plurality of classifier inlet blades which are arranged at or near the inlet; and a plurality of angularly spaced apart, inclined pre-swirl vanes which are disposed upstream of the inlet blades, wherein each pre-swirl vane comprises a multi-planar body.