B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/57
B07B 11/00 (2006.01) B07B 4/00 (2006.01) B07B 4/02 (2006.01)
Patent
CA 1085776
YOKE SHAPED SEPARATION CHAMBER WITH FEED AND FLOW CONTROL MEANS ABSTRACT A pneumatic material separator having adjacent generally vertical primary and secondary ducts, a generally vertical discharge duct communi- cating with the tops of the primary and secondary ducts and an apparatus for creating upwardly moving columns of gas in the ducts is disclosed. All of the ducts are of equal width and have substantially rectangular cross sections. An air foil at the junction of the primary and discharge ducts is present to minimize the turbulence of gas moving therebetween. A star feed apparatus introduces particulate material into the primary duct where the material is separated, by the upwardly moving column of gas, in- to an upwardly moving lighter fraction discharged through the discharge duct and a downwardly moving heavy fraction discharged through the primary duct. The secondary duct may be located beneath a portion of the discharge duct where gas velocity is reduced and may be oriented to receive downwardly falling objects so that the heaviest particles of the lighter fraction fall into and are discharged through the secondary duct. The secondary duct is positioned so that a column of gas moving upwardly therethrough, moves in the same general direction as the column of gas in the discharge duct so that the columns merge at a small acute angle to minimize turbulence. A venturi formed at the top of the secondary duct accelerates the flow of gas therethrough, which flow is adjustably controlled by a damper inside the duct.
290103
Rader Companies Inc.
Smart & Biggar
LandOfFree
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