Gyratory crusher hydraulic pressure relief valve
AssigneeSandvik Intellectual Property AB
InventorPatrik SJOBERG
Life of this patent
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Abstract
A gyratory crusher hydraulic pressure relief valve includes a hydraulic fluid vestibule arranged to be fluidly connected to a hydraulic fluid space. A logic element is arranged to dump hydraulic fluid from the hydraulic fluid space, which includes a plunger having a first plunger surface and a second plunger surface, and a control pipe arranged for fluidly connecting the second plunger surface to the hydraulic fluid vestibule. A supply orifice restricts the flow of hydraulic fluid from the vestibule towards the second plunger surface to make the time TC it takes for the logic element to switch from open position to closed position exceed the time TF it takes for a closed side setting position of the crusher to make one full round.
Claims10
A gyratory crusher hydraulic pressure relief valve comprising:
- a hydraulic fluid vestibule arranged to be fluidly connected to a hydraulic fluid space of a gyratory crusher;
- and
- a logic element arranged for dumping hydraulic fluid from the hydraulic fluid space, the logic element including a plunger having a first plunger surface fluidly connected to the hydraulic fluid in the hydraulic fluid vestibule, and a second plunger surface arranged opposite the first plunger surface, and at least one first control pipe arranged for fluidly connecting the second plunger surface to the hydraulic fluid vestibule, wherein the at least one first control pipe is provided with a first supply orifice which restricts the flow of hydraulic fluid from the vestibule towards the second plunger surface to make a time (TC) it takes for the logic element to switch from an open position to a closed position exceed a time (TF) it takes for a closed side setting position of the crusher to make one full round.
Dependencies are inferred from the claim text.