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US 4,365,763 AGranted
Discharge zone fastening assembly for grinding mill
AssigneeDominion Engineering Works Limited
InventorRhual L. Guerguerian
Life of this patent
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AssigneeDominion Engineering Works Limited
InventorRhual L. Guerguerian
Estimating the term…
In a grinding mill hollow drum structure a novel fastening assembly is provided for securing a discharge lifter between grates and a discharge head portion of the drum structure. The fastening assembly includes a hollow cantilever post having a body and a securing stem portion, being threaded or under tension or conical or the like, that adjoins the body at one end thereof and is accessible from outside the structure to receive a nut for releasably securing and adjusting the post in fixed relation to the discharge head portion. The post, once secured, provides a transverse load bearing capability for supporting the lifter, the wear plates and grates. A retaining structure surrounds the body of the post and cooperates with the discharge lifter to secure the lifter to the body. An inner tensioning bolt having a fixed head is provided that extends through a hollow portion of the cantilever post having a securing nut that is accessible from outside the drum structure to hold the discharge grates or discharge wear plates in pressing relation against the discharge lifter, the bolt being inwardly releasable for withdrawal into the drum.
In a grinding mill hollow drum structure having a discharge head portion, and a plurality of discharge channel members, a fastening assembly for securing each of said discharge channel members to said discharge head portion, comprising at least one rigid cantilever post means having a body portion and a securing stem portion that adjoins the body portion at one end thereof, said securing stem portion being mechanically releasably secured in fixed relation to said discharge head portion independently of said channel members whereby said body portion of each said posts provides a transverse cantilevered load bearing capability for supporting one of said discharge channel members.
In a grinding mill hollow drum structure having a discharge head portion, a plurality of wear plates and grates, and a plurality of discharge discharge channel members interpositioned between said discharge head portion and said wear plates and grates, a fastening assembly for securing said grates and wear plates in mutually pressing relation with said discharge channel members comprising a plurality of rigid cantilever post means each having a body portion and a securing stem portion that adjoins the body portion at one end thereof and being mechanically releasably secured in fixed relation to said discharge head portion independently of said channel members whereby said body portion is mounted in cantilever relation to said discharge head portion and provides a load bearing capability for supporting towards the other end thereof one or more of said grates and wear plates.
In a grinding mill hollow drum structure having a discharge head portion, a liner plate member, a plurality of discharge grates and wear plates, and a plurality of discharge lifters located between said liner plate member and said grates or wear plates for elevating ground material passing through the grates from the periphery of the structure toward the center of the structure to be discharged therefrom, a fastening assembly securing said discharge lifters in position between said grates or said wear plates and said liner plate member and for securing said grates and wear plates in mutual pressing relation with said discharge channel members, comprising hollow, rigid cantilever post means each having a body portion and a securing stem portion which adjoins the body portion at one end thereof and passes through aligned apertures in said liner plate member and discharge head portion so as to protrude from the discharge head portion, said stem portion having a securing nut that is accessible from outside the drum structure for releasably securing said cantilever post means in fixed relation to said discharge head portion, said cantilever post means secured in fixed relation to the discharge head portion independently of said lifters providing a transverse load bearing capability for said body portion to support one of said discharge lifters and to support towards the other end thereof one or more of said wear plates and grates, retaining means surrounding the body portion and cooperating with said one discharge lifter for holding said one discharge lifter in secured relation to the body portion, and an inner bolt means passing through the holler cantilever post means and having tensioning nut accessible from outside the drum structure for tensioning the inner bolt means to hold said grates and said wear plates in mutual pressing relation with said one discharge lifter, said cantilever post means substantially precluding transverse movement of said inner bolt means.
Dependencies are inferred from the claim text.