Controlling system for the displacement of the specifically lighter liquid components from a self-emptying separator
AssigneeWestfalia Separator AG
InventorFriedrich Wilke
Life of this patent
Estimating the term…
Abstract
Control unit for a self-emptying centrifuge having a fluid controlled emptying valve for discharging the solids and a paring disc or a conduit sealingly joined to the drum for removal of a specifically heavier liquid and an outlet for a specifically lighter liquid, for displacement of the specifically lighter liquid from the drum before the emptying valve is opened. The control unit operates so that flow in the outlet for specifically heavier liquid is reduced whereby specifically lighter liquid is displaced from the centrifuge, and so that thereafter the emptying valve is opened.
Claims4
A self-emptying centrifuge suitable for separating a feed material into a specifically heavier liquid, a specifically lighter liquid, and a solids component, comprising:
- a separating drum outfitted with an inlet for introduction of the feed, an outlet for specifically heavier liquid, an outlet for specifically lighter liquid, and an outlet for the solids component, each of the feed inlet, the outlet for specically heavier liquid, and the outlet for the solids component being provided with a valve, means for actuating the solids outlet valve to open and close it for being in the closed position during normal centrifuging and in the open position when solids are to be discharged, and
- a control unit effective following actuation thereof to operate the valve for the outlet for specifically heavier liquid to reduce the flow of specifically heavier liquid and after a fixed time interval to operate said means for actuating the solids outlet valve for opening of the solids outlet valve for discharge of the solids, and also following actuation of the control unit, to operate the valve in the feed line to shut off flow of feed to the centrifuge,
- whereby as long as the valve in the feed line is open specifically lighter can be displaced from the centrifuge via the outlet for specifically lighter liquid before the solids component is discharged.
Dependencies are inferred from the claim text.