Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1996-05-13
1999-12-14
Bucci, David A.
Classifying, separating, and assorting solids
Sifting
Plane sifters
209680, 209311, 2093652, 209421, 209920, B07B 128
Patent
active
060005548
ABSTRACT:
A screening conveyor (10) for conveying particulate matter, such as comminuted wood fiber, in a forward direction while also screening to separate particles over a predetermined size from small particles under a predetermined size. The screening conveyor includes a frame (17, 50) and first and second conveyor bed sections (16, 30) supported by the frame. Each conveyor bed section defines a longitudinal axis and an upper surface (22) formed from a tiled series of trough shaped trays (20). Each tray defines a step including an ascending surface portion (96). The first and second conveyor bed sections are reciprocated in opposing balanced fashion along the longitudinal axis by a motor (48), cam assembly (54) and connecting rods (64, 66). The received particulate matter is carried on the stepped upper surfaces of the reciprocating conveyor bed and thrown forwardly from tray to tray. The upper surfaces further each define a plurality of apertures of predetermined size. Particulate matter is screened through first screening apertures (34) in the first conveyor bed section, with material below a predetermined size falling onto the second conveyor bed section. Material over the first predetermined size is supplied to a recycle conveyor (38) for further comminuting. Material passing through the first screening apertures falls onto the second conveyor bed section, and is further screened through second screening apertures (42) of a second predetermined size. Fine particles pass through the second screening apertures, and acceptable product is discharged from the discharge end (32) of the second conveyor bed section.
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Product brochure for Taper Slot.TM. Vibratory Screens; Action Equipment Company, Inc., believed to be published prior to May 13, 1996.
Bucci David A.
ComCorp, Inc.
Hess Douglas
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