Hammer mill apparatus

A hammer mill apparatus to shred and chip pallets fed therethrough comprising a shredding rotor assembly rotatably disposed within a rotor housing including an entry portion and an exit portion formed therein and a debris chamber cooperatively formed by a pair of end plates disposed on opposite ends of a substantially cylindrical shell, said entry portion and exit portion disposed on opposite sides of said debris chamber to feed pallets thereto and discharge debris therefrom, said entry portion comprising an entry chute having an inlet opening to receive palets therethrough and said exit portion comprising an exit chute having an outlet opening to discharge debris therefrom, said debris chamber further includes a chamber inlet formed in said substantially cylindrical shell adjacent the inner end of said entry chute and a chamber outlet formed in said substantially cylindrical shell adjacent the inner end of said entry chute and a chamber outlet formed in said substantially cylindrical shell adjacent the inner end of said exit chute, said shredding rotor assembly includes at least one rotor disc assembly having a plurality of hammer elements pivotally coupled to the periphery thereof being operatively connected to a rotor drive assembly and a plurality of hammer element control means each comprising a truncated triangularly shaped hammer element engagement means disposed to engage the sides of adjacent hammer elements to limit the pivotal movement thereof, an anvil assembly disposed adjacent said chamber inlet to cooperate with said shredding rotor assembly to shred and chip pallets entering said debris chamber, said anvil assembly comprising an anvil element substantially the width of said substantially cylindrical shell including an inclined anvil surface slidably disposed with an anvil channel to vary the distance between said inclined anvil surface and the outer ends of said hammer elements to control the space therebetween, said rotor drive assembly including a drive motor and a rotatable rotor drive shaft to rotate said rotor disc assembly exerting centrifugal force on each said plurality of hammer elements such that a line coincident with the longitudinal axis of each said hammer element extends through said rotatable rotor drive shaft whereby the outer end of each said hammer element engages pallets in said entry portion to shred and chip such pallets entering said rotor housing and discharges the reduced material from said exit portion.

The hammer mill apparatus to shred and chip pallets fed therethrough comprising a shredding rotor assembly rotatably disposed within a rotor housing including an entry portion and an exit portion formed therein, said shredding rotor assembly including at least two rotor disc assemblies wherein each said rotor disc assembly comprises a plurality of hammer elements pivotally mounted to the periphery of a pair of substantially parallel, spaced apart circular rotor discs by a corresponding rotor disc aperture and hammer element aperture being operatively connected to a rotor drive assembly and a plurality of hammer element control means each comprising a truncated triangularly shaped hammer element engagement means disposed to engage the sides of adjacent hammer elements to limit the pivotal movement thereof, said rotor drive assembly including a drive motor and a rotatable rotor drive shaft to rotate said rotor disc assembly exerting centrifugal force on each said plurality of hammer elements such that a line coincident with the longitudinal axis of each said hammer element extends through said rotatable rotor drive shaft whereby the outer end of each said hammer element engages pallets in said entry portion to shred and chip such pallets entering said rotor housing and discharges the reduced material from said exit portion, each said circular rotor disc is mounted on said rotatable rotor drive shaft by a corresponding mounting collar having a centrally disposed aperture formed therethrough to receive said rotatable rotor drive shaft, each said mounting collar comprises a mounting element affixed within a corresponding centrally disposed rotor disc aperture and a spacer element having a width slightly greater than the width of said hammer elements.