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US 4,162,767 AGranted
Impacting crusher with variable flow feed distributor
AssigneePennsylvania Crusher Corporation
InventorWilliam F. Hahn
Life of this patent
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AssigneePennsylvania Crusher Corporation
InventorWilliam F. Hahn
Estimating the term…
An impacting crusher with a relatively wide rotor is adapted to receive its feed material from a relatively narrow conveyor, while establishing even distribution of wear across the rotor. Periods of operation between rotor overhaul and replacement are extended. Machines with adjustable cages may require less frequent cage adjustments, and are generally capable of a larger number of cage adjustments (with more favorable effect on machine performance). The relatively narrow conveyor feeds feed material to an enclosure which is adapted to maintain an inventory of such material and has an opening through which it discharges the material from the inventory to the rotor. The opening is elongated in a direction generally parallel to the rotor axis, is about as long as the width of the rotor, has its ends positioned substantially above the ends of the rotor, and is of substantially uniform width along its length. Means are provided to respectively increase and decrease the width of the elongated opening in response to increased and decreased inventory of material in the feeder, while retaining sufficient inventory to keep the entire length of the opening covered. Thus, although the width of the opening and the overall mass rate of material passing through it may fluctuate if the feed from the conveyor fluctuates, the mass flow through the opening is distributed substantially uniformly across its length. Thus, the material is distributed substantially uniformly across the width of the rotor, causing it to wear evenly across its width over an extended period of operation.
Apparatus comprising in combination an impacting crusher and a feed distributor;
A feed distributor including an enclosure defined by confining means for surrounding an inventory of material laterally and from beneath, said confining means including at least one moveable member having intersecting side, end and bottom walls, said side walls being generally upright, said bottom walls sloping downwardly and inwardly from said side walls, said moveable member being moveable to define between itself and an adjoining portion of said confining means an opening which is elongated in a horizontal direction, which is of substantially uniform width across the enclosure and which is in position to release material in substantially vertical free fall, said moveable member being connected with closing means having the property of exerting sufficient closing force on said moveable member to keep the entire length of said opening covered by said inventory while said inventory is flowing through the opening, and being responsive to the inventory present in the enclosure for moving said moveable member and respectively decreasing and increasing the width of said opening in response to decreased and increased inventory, whereby such apparatus will cause the material passing through said opening to be distributed substantially uniformly across the length of the opening.
A feed distributor including an enclosure defined by confining means for surrounding an inventory of material laterally and from beneath, said confining means including a pair of moveable members having intersecting side, end and bottom walls, said side walls being generally upright, said bottom walls sloping downwardly and inwardly from said side walls, said moveable members being moveable, and said bottom walls including edges, for defining between them an opening which is elongated in a horizontal direction, which is of substantially uniform width across the enclosure and which is in position to release material in substantially vertical free fall, said moveable members being connected with closing means having the property of exerting sufficient closing force on said moveable members to keep the entire length of said opening covered by said inventory while said inventory is flowing through the opening, and being responsive to the inventory present in the enclosure for moving said moveable members and respectively decreasing and increasing the width of said opening in response to decreased and increased inventory, whereby such apparatus will cause the material passing through said opening to be distributed substantially uniformly across the length of the opening.
A feed distributor including an enclosure defined by confining means for surrounding an inventory of material laterally and from beneath, said confining means including at least one moveable member and a skirt member, said moveable member having intersecting side, end and bottom walls, said side walls being generally upright, said bottom walls sloping downwardly and inwardly from said side walls, said moveable member being moveable to define between itself and an adjoining portion of said confining means an opening which is elongated in a horizontal direction, which is of substantially uniform width across the enclosure and which is in position to release material in substantially vertical free fall, said skirt member having generally upright walls and an open top and bottom secured within said enclosure for isolating feed material within said skirt from the side walls of said moveable member, said moveable member being connected with closing means having the property of exerting sufficient closing force on said moveable member to keep the entire length of said opening covered by said inventory while said inventory is flowing through the opening, and being responsive to the inventory present in the enclosure for moving said moveable member and respectively decreasing and increasing the width of said opening in response to decreased and increased inventory, whereby such apparatus will cause the material passing through said opening to be distributed substantially uniformly across the length of the opening.
A method comprising:
Dependencies are inferred from the claim text.