Valve seat self cleaning device for alumina production plants
AssigneeAmpo, S. Coop.
InventorJuan José Goñi Usabiaga
Life of this patent
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Abstract
This valve is applicable in conduction of bauxite in pipes and is meant to allow the self-cleaning of the valve with the aid of a locking cap which connects the drive crown and the valve shaft, causing the rotation of said crown to be transmitted to the valve shaft, which as it rotates rubs on the valve seats, thus removing the depositions.
Claims4
In an apparatus for processing bauxite into alumina comprising means for coupling and decoupling a valve ring from a valve seat, said means comprising a crown, a valve shaft to which the ring is joined and drive means for rotating the crown and for translating rotational movement of the crown into ascendant or descendant movement of the valve shaft, the improvement wherein the apparatus comprises a locking cap, said locking cap comprising coupling means for coupling the crown and the valve shaft so that rotation of the crown causes rotation of the valve shaft which in turn causes rotation of the ring joined to the valve shaft whereby the ring can scrape bauxite deposits from the valve seat.
Dependencies are inferred from the claim text.