Claims
- 1. A centrifugal separator comprising a rotor mounted for rotation about an axis and having a separating chamber provided with an inlet for a mixture of liquid and solids and with an outlet for separated liquid, the rotor also having at its outer periphery a plurality of separate channels serving as peripheral outlets for sludge separated in said chamber, means located in the separating chamber between said sludge outlets and forming funnel-shaped pockets each converging radially outward toward a corresponding sludge outlet for accumulating separated sludge, means movable axially to and from sealing contact with the rotor around the outer ends of said peripheral channels and adapted to seal the sludge outlets intermittently by an axially directed force against the rotor, means operated by pressurized air for operating said sealing means and including a plate movable axially of the rotor and coacting with the outer surface thereof to form a second chamber which is sealed, said operating means also including mechanical springs distributed around the rotor axis and constantly applying to said plate an axial force in the direction for operating said sealing means to seal the peripheral outlets, said operating means also including a device for supplying pressurized air intermittently to said second chamber to move said plate intermittently against the action of said springs and in the axial direction for operating the sealing means to open the peripheral outlets, the rotor and said sealing and operating means being formed to allow the ejected sludge to leave the rotor without any obstruction, and means for sealing said second chamber including a first seal located between the rotor and the radially inner portion of the plate and a second seal located between the rotor and the radially outer portion of the plate, both of said seals being located radially inward from the peripheral sludge outlets.
- 2. A separator according to claim 1, in which one of said rotor parts is constituted by a bowl formed in one piece and provided with an edge portion directed radially inward, the other rotor part having a substantially smaller diameter than the bowl part and being connected therewith at said edge portion, the chamber-surrounding portion of the bowl part, including said edge portion, having a form which, as seen in an axial section through the rotor, is substantially the axial section form of a hollow conical body.
- 3. A separator according to claim 2, in which said edge portion of the bowl extends radially inward past said pocket forming means.
- 4. A separator according to claim 1, in which the sealing means include a plurality of sealing members secured to said plate and spaced around the rotor axis, said sealing members being aligned with the outer ends of said peripheral channels.
- 5. A separator according to claim 2, comprising also a conical disc set in the separating chamber, said edge portion of the bowl being located radially inward from said pocket forming means but radially outward from the disc set.
- 6. A separator according to claim 1, in which said springs are located radially between said first and second seals.
Parent Case Info
This application is a division of my copending application Ser. No. 652,754 filed Jan. 27, 1976, now U.S. Pat. No. 4,015,773, granted Apr. 5, 1977.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
822,975 |
Nov 1951 |
DT |
Divisions (1)
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Number |
Date |
Country |
Parent |
652754 |
Jan 1976 |
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