Classifying – separating – and assorting solids – Sifting – Elements
Patent
1990-01-16
1991-04-09
Hajec, Donald T.
Classifying, separating, and assorting solids
Sifting
Elements
209400, 209403, 209405, B07B 146
Patent
active
050062280
ABSTRACT:
Mounting system for substantially increasing the wear life of a screen panel which is adapted to be vibrated, utilizes elastomeric material, such as urethane, to isolate the vibrating mechanism from direct contact with the screen panel. An elastomeric wear strip is bonded to screen wires on the underside of the screen panel. A recessed channel formed in the bottom of the wear strip is adapted to engage an upper contact surface of a rigid vibrating bar member, while the side edges of the channel extend downwardly over the sides of the rigid vibrating bar member to prevent abrasive material which has passed through slots in the screen panel from entering the contact area between the recessed channel and the upper contact surface. The upper contact surface of the vibrating bar member is preferably covered with elastomeric material and crowned so as to cause the screen panel to become curved when its side edges are forced down by a pair of hold-down bars. Contact between the hold-down bars and the screen panel and contact between the ends of the vibrating bar member and the side walls of the screen box assembly is preferably made through layers of elastomeric material. The hold-down bars preferably include angled wedge-shaped portions on their upper surfaces which cooperate with angled brackets on the side walls of the screen box assembly to force the side edges of the screen panel downwardly. Flow diverter strips are provided at the ends of the screen panel to prevent material which has flowed through the screen slots from leaving the screen box.
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Anderson Thomas A.
Kalar Richard G.
Markfelt Reinhold S.
Wagner Walter R.
Clark Barry L.
Hajec Donald T.
Johnson Filtration Systems Inc.
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