Vibrating reclaimer of foundry mold material
AssigneeRexnord Inc.
InventorRobley W. Evans
Life of this patent
Estimating the term…
Abstract
An apparatus for reclaiming material primarily used in the fabrication of foundry molds is provided in which the sand in the form of large chunks of mold is introduced into a vibrating conveyor and carried initially to a rotary hammer assembly. The chunks are chopped into finer pieces which fall back into the conveyor and are moved into a vibrating drum assembly which causes the pieces to self-abrade into particles. When the particles reach a predetermined size, they leave the drum through a perforated gate means and fall back into the conveyor which carries the particles to a vibrating screen. Particles passing through the screen are then removed for further processing.
Claims11
An apparatus for the breaking and disintergrating of foundry molds into reclaimable particulate material comprising
- (a) vibrating conveying means for conveying materials to be broken and disintegrated including a feed section adapted to initially receive the material;
- (b) means for vibrating said conveying means at a predetermined frequency and stroke;
- (c) material breaking means for receiving material carried thereto by said conveying means and breaking the material into smaller pieces, said conveying means having a second section positioned adjacent said breaking means for collecting and removing broken pieces of material;
- and
- (d) a disintegrating means including a vibrating drum means positioned down stream from said material breaking means for receiving said broken pieces of material which self-abrades into particles due to the vibration of said drum means, said drum means having separating means for selectively restraining particles larger than a predetermined size from egress therethrough, said conveying means having a third section positioned adjacent said separating means for collecting and removing particles of material passing through said separating means.
An apparatus for breaking and disintegrating foundry molds into reclaimable particulate material comprising
- (a) a conveyor capable of being vibrated for conveying materials to be broken and disintegrated, said conveyor including a feed section adapted to initially receive the material;
- (b) a rotary hammer assembly having a plurality of hammers pivotably mounted for circular movement about a common axis of rotation and a plurality of elements mounted in a common plane beneath the axis of rotation of said hammers, said elements being positioned sufficiently apart from one another to permit penetration between adjacent elements of the ends of said hammers when fully extended in the downward direction;
- (c) a drum capable of being vibrated and positioned adjacent said rotary hammer assembly for receiving broken pieces of material from said assembly and causing said broken pieces of material to abrade into particulate material, said drum having a perforated gate mounted thereon capable of movement between open and closed positions for passing particulate material and retaining tramp material when closed, said conveyor positioned to receive particulate material and tramp material from said drum;
- (d) a screen deck capable of being vibrated for receiving a bed of particulate and tramp material from said drum and separating particles of a predetermined size or less from said bed;
- and
- (e) a means for vibrating said conveyor, drum, and screen at a predetermined stroke and frequency.
Dependencies are inferred from the claim text.