B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
198/54
B65G 33/20 (2006.01) B65G 33/32 (2006.01)
Patent
CA 1099225
SCREW CONVEYOR WITH INTERMEDIATE BEARING ABSTRACT OF THE DISCLOSURE A screw conveyor for feeding solid granular material including a rotary shaft with a screw blade, a drum surrounding the screw blade and concentric with it, and a bearing supporting the shaft for ro- tation with respect to the drum at an intermediate axial position of the shaft. The screw blade is dis- continued at the bearing, having two end portions spaced apart a distance greater than the axial length of the bearing along the shaft. Arms connect the bearing to the drum for applying an axial force to the material being fed past the discontinuity in the screw blade upon relative rotation between the screw blade and the drum. The drum and shaft are normally rotated in different directions. The arm makes a positive angle of about 15° to 50° with respect to a plane perpendicular to the shaft, and is disposed in a plane intersecting a continuation of each of the screw end portions, each arm having an axial dimension at least one half the axial distance between the screw conveyor end portions, and at least 75% of the axial dimension of the bearing.
316423
Fetherstonhaugh & Co.
Forsberg Georg L. K.
LandOfFree
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