Abstract: A salad spinner comprising a bowl, a colander adapted to nest within the bowl, and a lid for the bowl and colander. Drive means are associated with the lid for rotating the colander relative to the bowl. The drive means include a handle having one end for manual engagement with the opposite end of the handle being pivotably mounted to the lid. A drive gear is positioned at the opposite end of the handle, and a turret is positioned on the underside of the lid. The turret is rotatably attached to the lid and a pinion gear is provided in driving engagement with the turret. This pinion gear meshes with the drive gear whereby movement of the handle transmits movement to the turret through the pinion gear. Drive tabs are carried by the turret for engaging the colander to impart spinning movement to the colander in response to movement of the handle.

Abstract: A centrifugation system includes frame has at least one weight bearing member for engaging a support surface generally lying in a horizontal plane. The system also includes a centrifuge assembly including a chamber that can be rotated about an axis. A base supports the centrifuge assembly on the frame within the interior area with the rotational axis oriented in a plane that lies outside a vertical plane perpendicular to the horizontal support surface. The sloped orientation of the rotational axis conserves vertical height. It makes it possible to place the rotating centrifuge components for access in a zone that lies between the knees and the chest of the intended user, when standing.

Abstract: A bowl for use in a centrifuge instrument wherein the bowl has a predetermined line of weakness formed therein. The line of weakness, which may be disposed on either the inside or the outside surface of the bowl, subdivides the bowl into an upper and a lower region.

Abstract: A biohazard centrifuge having an improved air cooling arrangement, wherein a cooling air stream is directed onto and around the rotor chamber of the centrifuge without introducing cooling air thereinto. This results in cooling air being separated from the spinning rotor and reduces the possibility of contamination of the cooling air stream from a leaking sample container. Additionally, further protection to laboratory personnel is afforded by a sealed rotor assembly chamber, and by providing rotor assembly specimen containers or carriers having lids which are easily attached and removed, requiring a simple partial twist to lock the lids into place.

Abstract: A process for the removal of dispersed contaminants less dense than water from pulp and paper mill process liquids, comprises passing the liquid through a centrifuge and collecting the contaminants as a less dense fraction. The application of this invention to paper industry process liquids provides a means of removing a significant fraction of the wood resin and wood resin soaps from the process stream, thus enabling (1) a greater extent of reuse of filtrates and, hence, less effluents from mills, and (2) fewer problems from wood resin, such as deposit formation, loss of strength of product, and contamination of product with dirt particles.

Abstract: A separator for separating a first fluid from a second fluid through rotation about an axis of rotation, the first fluid having a density less than the density of the second fluid. In one embodiment, the separator includes a separation chamber mounted for rotation about the axis of rotation. A first weir is positioned in fluid communication with the separation chamber. A second weir is positioned over which the second fluid may pass to exit the separation chamber through a collection chamber. A fluid pressure chamber is positioned radially outwardly from the crest of the second weir to receive the second fluid as it passes over the second weir. The fluid pressure chamber is partially defined by an exit weir over which the second fluid may pass.

Abstract: An apparatus and method for centrifugally separating a mixture of liquids comprises a central inlet shaft, a surrounding rotor, and a housing shell. The mixture is injected into the rotor through the inlet shaft and the rotor separates the mixture in a radially sloped separation space containing a first weir, discharges the lighter liquid into the housing through a channel through the weir and wall of the separation chamber, and discharges the heavier liquid into the housing over a second weir. The inlet shaft may be built up to provide for efficient shear mixing and a sieve may be provided in the separation chamber. A two-stage separator may be constructed by providing a second separation chamber radially outward of the first after mixing of a separated liquid with a solvent and providing suitable discharge ports.

Abstract: Prior centrifugal concentrators for separating higher density particles from a slurry have not combined effective separation of concentrate with continuous discharge of the concentrate. The present invention provides a continuous discharge centrifugal concentrator having a retention zone for accumulating the concentrate in which a plurality of mass-flow hoppers are provided at the retention zone, with flow control devices to control the discharge of concentrate from the hoppers.

Abstract: The centrifugal separator for fluids comprises a housing (1a, 1b) in which is mounted a rotatable driving cup (3) of a conical shape widening upwardly, as well as a disposable centrifugal bowl (5) made of an elastomeric material and having a generally conical shape widening upwardly and press fitted in the operative position inside the driving cup. This centrifugal bowl (5) has two annular beads, respectively an upper bead (14) and a lower bead (6), through which extend vertical passages, and it is closed at its upper peripheral end by a metallic bowl cover (11). It further has a cover (16) cooperating with the housing for closing the same above the bowl, a resilient rotatable seal (17) integral with this separator cover and in contact with the bowl cover, and a fluid supply tube (21) extending through the removable cover and integral therewith.

Abstract: A separator for separating a first fluid from a second fluid through rotation about an axis of rotation, the first fluid having a density less than the density of the second fluid. In one embodiment, the separator includes a separation chamber mounted for rotation about the axis of rotation. A first weir is positioned in fluid communication with the separation chamber. A second weir is positioned over which the second fluid may pass to exit the separation chamber through a collection chamber. A fluid pressure chamber is positioned radially outwardly from the crest of the second weir to receive the second fluid as it passes over the second weir. The fluid pressure chamber is partially defined by an exit weir over which the second fluid may pass.

Abstract: A shell-type centrifuge rotor includes a body member having an upturned lip and a plate having a skirt portion attached to the body. The skirt portion has a groove therein that overlies the lip on the body. The groove defines a relatively high stress region of likely failure of the rotor. A seal is disposed in the groove, the seal extending between the plate and the lip. Failure of the rotor in the vicinity of the groove in the skirt portion at a first operating speed defining an opening through which a portion of the seal may protrude. The protruding portion of the seal generates a force tending to lower the speed of the rotor below the first operating speed. The radially inner surface of the seal ring is inclined toward the axis of rotation. The radially inner boundary surface of the groove is parallel to or inclined radially inwardly toward the axis of rotation.

Abstract: A centrifuge has an upper wall formed with an inspection port, a cover engageable over the port, and an annular seal on the cover compressible against the port in a closed position of the cover. A hinge and operating assembly has a hydraulic cylinder/piston unit having one end pivoted on the housing, at least one pivot lug on the cover defining a cover axis, at least one pivot lug on the housing defining a housing axis parallel to the cover axis, and a support link having one end pivoted on the housing pivot lug at the housing axis and an opposite end defining a support axis. An operating lever centrally pivoted on the opposite end of the support link at the support axis has an end portion extending from the support axis and connected to the opposite end of the hydraulic unit and an opposite end portion on pivoted to one end of an operating link having an opposite end pivoted on the cover lug at the cover axis.

Abstract: In a multi-chamber centrifuge for gassing or degassing of liquids which has a floor 7, a corresponding lid 3 placed at a certain distance, with gaps to permit the passage of gas in the floor 7 and lid 3, with a liquid pipe connection in the lid 3 and two sets of coaxially mutually fitting cylinders, the set (=rotor) with the rotating cylinders rises from the floor 7, while the other set (=stator) descends from the lid 3 and is static. The cylinders of one set each penetrate the gaps between the cylinders of the other set, and each set of cylinders leaves a radial gap by reaching just short of the opposite base (either the floor 7 or the lid 3). At least some of the cylinders of the rotating set can be made at least partially of a woven material which can be fashioned like a sieve. On the static cylinders 4, vibration generators 19 and/or heating devices 13 may be installed (FIG. 1).

Abstract: The equipment of the present invention serves to eliminate light particles, inks and air from a fibrous suspension, and consists of a vertical separating cup which spins at high speed. Feeding of the fibrous suspension and light contaminants takes place through the upper vertical portion, or through the lower vertical portion; the equipment comprises a stabilizer which serves to control the inner turbulence of the suspension, in order for light contaminants to be concentrated at the center.

Abstract: A centrifugal separation process which is made continuous and automatic by determining the position for taking out the liquid container (8) accurately within a short time, with a liquid container (8) containing liquid for separation being kept by a basket (7) which is suspended and freely rotatable on the tip of a rotary arm (6), by positioning a circumferential direction of the rotary arm (6) by means of a rotary arm direction detector and a rotary arm positioning device and by stopping a basket (7) horizontally at a predetermined position by a basket positioning device (14).

Abstract: An apparatus and method for reducing sugar, crystal impact damage and lump formation in a centrifugal provides a resilient barrier ring which absorbs most of the impact energy of the crystals and which deflects the crystals so they are not struck by trailing high speed crystals. An air flow causes vibration of the barrier ring to prevent crystal sticking which could lead to lump formation. This air flow also reduces moisture content in the sugar housing to further reduce lump formation.

Abstract: A centrifugal cleaning apparatus having a centrifuge bowl rotated on a vertical axis at high velocity with a circular opening in the top for clean liquid to be discharged into a surrounding liquid containment bowl. An accelerator is mounted in the bottom of the bowl for receiving contaminated liquid in the center of the accelerator and causing that liquid to be accelerated radially and rotationally into the centrifuge bowl. The centrifugal forces cause particulate material to be deposited on the vertical interior wall of the centrifuge bowl while the liquid flows from the bottom of the bowl to the outlet opening at the top in an annular column of liquid. The clean liquid is removed from the containment bowl and the collected particulate material is periodically removed from the centrifuge bowl.

Abstract: A centrifugal separator in which a wash fluid zone is formed within the confines of an annular weir, with excess wash fluids passing via a spillway to an excess wash fluid outlet. Recyclable fluids are forced into a wash fluid/recyclable fluid interface on top of the wash fluid zone by centrifugal force with recyclable fluids being skimmed from the wash fluid/recyclable fluid interface through a recyclable fluid outlet. Solids are propelled by centrifugal force outwardly toward interior sidewalls and washed down sloped interior sidewalls toward a solids outlet by wash fluids fed continuously in through a wash fluids inlet. A rotating shaft is provided having a plurality of arms which extend to immediately adjacent the solids outlet. The arms have paddle shaped extremities.

Abstract: Apparatus for separating oil and water from a stream of fluid may include a stationary housing in which is centrally disposed for rotation therein a chamber assembly including an upper and lower chamber. A plurality of U-tube assemblies extend radially outward of the chamber assembly providing a plurality of U-tube paths which are inclined downwardly from the chamber assembly. A power device rotates the chamber assembly and the U-tube assemblies subjecting the stream of fluid to centrifugal forces and separating oil and water into the upper and lower chambers, respectively, for exit therefrom.

Abstract: An automatic centrifuge, especially useful with the Censlide.TM. containers, enables automatic operation in the centrifuging of samples. The centrifugal speed is ramped up to a first speed for about 45 seconds, the first speed maintained for about 15 seconds, the speed is then ramped down to a second speed during a 15 second time interval, and the second speed maintained while the samples are flicked a predetermined number of times. The centrifugal speed is then ramped down to zero. The automatic operation, and flicking enables the samples to be examined in their containers as soon as the automated cycle, requiring a time period of from one and one half minutes to about two minutes, is ended.

Abstract: A centrifugal oil filter comprises a bowl which is rotatable about a vertical axis within a fixed casing and which is open at its upper and lower ends, the inner wall of the bowl being provided with grooves which trap particles in the polluted oil fed into the bowl as the bowl is rotated and the oil flows upwards along the wall under centrifugal action and which allow the particles to fall therefrom under gravity to a particle collector positioned below the open lower end of the bowl when the bowl stops rotating. The inner wall of the bowl is also formed with an annular recess above the particle trapping grooves. This recess fills with oil when the bowl is rotated, and this oil flows out and downwards along the wall under gravity when the bowl stops, thereby cleaning the filter wall.

Abstract: A three phase centrifugal separator for separating the components of a fluid mixture of oil, water and gas, consisting of a cylindrical drum rotatably mounted within a pressure vessel. Two liquid phase holding tanks connected to the pressure vessel are also maintained under pressure. The drum has an initial separation chamber which separates gaseous phase fluids from liquid phase fluids. Water is forced to the outer circumference of the drum by centrifugal force and forms a water zone within the confines of a first and a second annular weirs. The first annular weir is lower than the second annular weir such that water is retained in the water zone until the level of the first annular weir is attached, thereafter any additional water entering the water zone results in a migration of water between the drum and the first annular weir to a water phase outlet. Oil is forced into a water/oil interface on top of the water zone by centrifugal force.

Abstract: An orbital separator for separating the components of a mixture by introducing a flow of the mixture into a container which has therein an axial mounted member for directing the flow of the mixture to the periphery of the container and which allows removal of the separated components of the mixture.

Abstract: A centrifuge for separating liquids, e.g., oil from water. The centrifuge basically comprises a housing having first and second cavities, and a liquid conveying wall disposed over a bowl arranged to be rotated about a central axis. The bowl includes an annular top wall having an annular separator plate including a central hub mounted below the top wall. The separator plate is spaced from the bowl to enable the second liquid to flow therebetween and into the space between it and the top wall. The hub has plural radial passageways in communication with the space between the separator plate and the top wall and also with the space between the top wall and the liquid conveying wall. The hub also has plural axial passageways communicating with the interior of the bowl and located at the interface of the two liquids formed when the bowl is rotated. Each axial passageways has an outlet in communication with the liquid conveying wall.

Abstract: Improvement in closing covers of apparatuses such as concentrators-evaporators, ultracentrifugal and centrifugal apparatuses, in which a centrifugal rotor rotates in an enclosure in which a vacuum may be established. The cover is formed by a plate (11) which is guided in translation by projections (14a, 14b) traveling in guide rails (12) so as to maintain the cover in a horizontal position when it overlies the opening and allow the pivoting of the cover when it has been displaced in its plane to a releasing position.

Abstract: The invention discloses a device for closing the inlet of a containment well of a blood centrifugation cell in the body of a centrifugation machine. A plate is supported at one end of the inlet of the containment well and is rotatable about the horizontal axis. The plate has a pair of parallel pins extending perpendicularly from the surface. A pair of half-lids are each pivotably supported at one end thereof by one of the pins, and have matable inner edges. The closing device includes apparatus for locking the half-lids into a closure position, whereby the half-lids are rotated downwardly against the inlet with the half-lids pivoted together, thereby closing the inlet of the containment well.

Abstract: A centrifuge has a generlly stationary and closed housing, a drum rotatable in the housing about a drum axis and having an end wall and an outer drum wall, a blade extending generally axially in the housing generally parallel to the drum wall, and a blade holder having an inner end carrying the blade and an outer end projecting through the housing end wall out of the housing. Seals snugly engaged between the outer end and the housing hermetically seal the housing around the holder and a guide fixed on the end wall supports the outer holder end on the housing for sliding movement of the holder and blade on the housing in an adjustment direction generally radial of the drum axis. An actuator engaged between the housing and the outer holder end displaces the holder and blade in the adjustment direction relative to the housing.

Abstract: A food damp-drying centrifuge containing a spinner basket having a cover driven by an upper-positioned motor so that when the cover is engaged with the basket, actuation of the motor causes the basket to spin.

Abstract: Apparatus for cleaning dirt/oil/water mixtures that utilizes a rotating drum wherein the inner cylindrical wall of the drum includes a plurality of V-shaped troughs secured in continuous circumferential array with each vee or apex directed radially outward and secured to the inner drum wall. Canted baffle plates of triangular shape are then secured within each trough with triangle base secured at the vee open top and the triangle apex secured at the vee apex. Input dirty oil having water and dirt suspended is input at one end of the drum proximate the base ends of the baffle plates while lighter weight oil products are separated inward along the axis of the drum and heavy dirt and water materials are driven to the baffle apex points from which they may be extracted.

Abstract: The invention is directed to a centrifugal contactor for solvent extraction systems. The centrifugal contactor is provided with an annular vertically oriented mixing chamber between the rotor housing and the rotor for mixing process liquids such as the aqueous and organic phases of the solvent extraction process used for nuclear fuel reprocessing. A set of stationary helically disposed vanes carried by the housing is in the lower region of the mixing chamber at a location below the process-liquid inlets for the purpose of urging the liquids in an upward direction toward the inlets and enhancing the mixing of the liquids and mass transfer between the liquids. The upper region of the mixing vessel above the inlets for the process liquids is also provided with a set helically disposed vanes carried by the housing for urging the process liquids in a downward direction when the liquid flow rates through the inlets are relatively high and the liquids contact the vane set in the upper region.

Abstract: A centrifuge includes an outer frame defining therein a rotor chamber, a centrifuge rotor detachably disposed in the rotor chamber, and a door slidably mounted on the frame for opening and closing the rotor chamber. The door projects outwardly from the frame when it is disposed in an open position. Since the door is received within the frame when it is fully closed, it does not enlarge the necessary space for installation of the centrifuge.

Abstract: A screw joint between two components, such as the rotor (3) and a lid locking ring (5) of an ultracentrifuge. During rotation the forces transferred by the screw joint and/or the centrifugal forces acting on the components tend to give rise to uneven distribution of the load between the threads of the screw joint. For distributing the forces transferred by the screw joint more uniformly, one of the components (3, 5) includes, a part (7) intended to be deformed due to the rapid rotation of the component to strive to rotate the component about axes perpendicular to axial sections through the center axis of the screw joint. In this way, variable contributions to the radial deformation of this component are produced along the axial extension of the screw joint, so that the load distribution is equalized between the screw threads.

Abstract: An improved apparatus for recovering liquid aluminous metal from hot, aluminous skim comprising a combination of an open-one-end bowl to hold the hot skim and retain the residue after centrifuging, a bowl cover latchable to said bowl and with means to provide one or more controlled peripheral openings between said components which together form a skim centrifuge body, which centrifuge body is suspended and rotatable from a loosely fitting, mating linkage which has arcuate mating surfaces, the upper connecting part of which is connected to a source of rotation said rotational force source being provided with a non-rotating reaction and support surface which is preferably separated from the rotating load-carrying member by at least two, concentric bearings of replicate function and the apparatus preferably further consisting of a liquid collection means which surrounds horizontally the suspended centrifuge body during rotation.

Abstract: A multicomponent fluid separation and irradiation system is described containing a centrifuge drum and a source of radiant energy located within the drum. In a first embodiment a disposable rigid separation/irradiation chamber is provided with a cylindrical outer compartment located within the drum and opposing the radiant energy source. Whole blood is supplied to the chamber through a dynamic seal located at the center of the chamber. As the chamber is rotated, blood is separated so that energy from the source passes through the inner wall of the chamber and the separated plasma layer to irradiate the buffy coat layer. In a second embodiment, one or both of the walls of the outer compartment of the chamber are flexible so that the chamber will expand as blood is pumped in and will collapse as blood is pumped out.

Abstract: A portable centrifuge apparatus for use with a centrifuge bowl having a seamless, unitary blow molded bowl body for the separation of blood into less dense and more dense components. A light weight, hand-held cabinet houses the centrifuge, and auxiliary equipment such as blood pumps, control instrumentation, and a sensor for measuring fluid pressure in a disposable chamber used for filtering blood.

Abstract: The apparatus includes a powered bowl assembly having a tubular shaft journalled within a base of the apparatus. A pressurized air flow is discharged into slurry in the bowl assembly via a circular array of bubble generators. An impellor discharges the slurry outwardly against an upwardly inclined annular surface of the bowl assembly to cause the slurry to merge upwardly with the streams to promote flotation. Slurry within the bowl assembly forms a vortex with particle flotation forming a froth layer inwardly of a slurry vortex. The froth exits the bowl assembly upwardly past a barrier partially closing the bowl assembly. Heavier gangue particles exit via an outlet about the bowl assembly periphery. A collector shroud is partitioned to receive the froth and the heavier waste material. A modified form of the apparatus includes an independently powered bowl assembly and impellor.

Abstract: This invention is drawn to a high-speed centrifugal extractor having improved weirs for selectively separating a heavy liquid and a light liquid. Each of the selection weirs has a double tube structure consisting of an outer cylinder extending from a rotor peripheral wall towards a rotor rotary shaft and an inner cylinder which is inserted into the outer cylinder through the rotor peripheral wall in such a manner that the insertion length of the inner cylinder can be varied. The heavy liquid selection weir has a heavy liquid withdraw port at the wall of the outer cylinder positioned inside the heavy liquid phase, while the light liquid selection weir has a light liquid withdraw port at the wall of the outer cylinder positioned inside the light liquid phase. By varying the insertion length of the inner cylinder into the outer cylinder, the position of an interface at which the heavy and light liquid phases are separated inside a rotor can be changed.

Abstract: A centrifugal separator for gold or the like is of the type in which a bowl is rotated at high speed so that materials fed into the bowl pass over the peripheral wall of the bowl to an open mouth. On the inner surface of the bowl is provided a series of ribs defining peripheral recesses in which the heavy material is collected. An outer shell surrounds the bowl and defines with it a chamber into which water is injected to pass through openings at the base of the recesses to fluidize the material within the recesses. The outer shell has a peripheral wall of increasing diamter toward the open mouth with a plurality of openings being provided in the shell around to open mouth to allow the escape of silt collecting in the chamber. A wear resistant plastics material is attached to the bowl at the open mouth and to a casing surrounding the open mouth to redirect the exiting materials to an outlet duct.

Abstract: A fuel cell power system for use in a weightless environment, such as in space, includes a device for removing water from a water-hydrogen mixture condensed from the exhaust from the fuel cell power section of the system. Water is removed from the mixture in a centrifugal separator, and is fed into a holding, pressure operated water discharge valve via a Pitot tube. Entrained nondissolved hydrogen is removed from the Pitot tube by a bleed orifice in the Pitot tube before the water reaches the water discharge valve. Water discharged from the valve thus has a substantially reduced hydrogen content.

Abstract: Disclosed herein is a device designed to remove and absorb grease from foods including a basket mounted in a chamber and designed to receive food products. The basket is rotatably mounted on the drive shaft of a motor for rotation at high enough speeds to cause grease to be removed from foods by centrifugal force. The basket is mounted in a chamber which may also have contained therein a heating device such as, for example, heat lamps. Furthermore, a disposable pad is removably mounted in the basket prior to insertion of the food products with the disposable pad being designed to absorb grease removed from the food by centrifugal force while preventing transfer of the grease to the basket walls.

Abstract: A method and apparatus for processing biological fluids, such as blood, by centrifugal separation, is described in which no rotary seals are required for introduction of fluids to a centrifuge bowl. Instead, rotary motion from a drive motor is coupled by a coupling means to a driven member extending from an enclosed centrifuge bowl. The coupling means comprises a non-rotational member which translates, or orbits, about the bowl axis. A flexible boot, extending from the coupling means, seals the opening in the enclosure through which the driven member is driven.

Abstract: A centrifuge having an access opening is closed by a door having a chamber defined on the interior thereof. The chamber is connectable to a low pressure region so that the chamber may be evacuated.

Abstract: Manually overridable servo controlled valve mechanisms for controlling the flow of fluids through a flexible tube for use in a photoactivatable reagent treatment system wherein photoactivatable reagents, in contact with patient blood cells, are irradiated extracorporeally and then retruned to the patient.

Abstract: A method for selective separation of fine metal particles from a mixture of fine particles, including the rotating of a bowl to generate a centrifugal force, building a wall of mercury media inside the bowl so that the outer surface of the mercury contacts the inner surface of the bowl when the bowl is rotating, and injecting a slurry comprising a mixture of water and fine particles of metal and sand, clay and the like, to propel the slurry against the mercury wall, so that the heavier metal particles as compared with the mercury contact, penetrate and pass through the mercury, and the particles lighter than the mercury are blocked from entry into the mercury and discharged from the bowl with the water. The injecting of additional slurry into the bowl increases the metal particle penetration to cause the formation of a layer of metal particles between the mercury and the inner surface of the bowl.

Abstract: A device for the separation of particles from a stream of gas by centrifugal action, comprising a driven rotatable hollow conically diverging body 1,2 and a feeding apparatus for directing the contaminated gas stream toward the inside wall of said body in the region of its narrowest portion so that the particles will be deposited against said wall and will gradually move toward the widest portion of said conical body; the stream of gas being controlled such that within the body a toroidal eddy forms for the recirculation of the contaminated gas stream.

Abstract: A swinging bucket centrifuge rotor includes a windshield having upper and lower portions in which the lower portion of the windshield is movable with respect to the shaft from an open to a closed position in response to a closing force generated by rotation of the rotor.

Abstract: A centrifuge holder to inhibit movement of a centrifuge machine caused by a rotor within the centrifuge coming off the drive spindle. The holder apparatus is designed in such a manner that the centrifuge machine can be placed on or removed from the holder without the need of any separate tool. Tab members of the holding apparatus are received within spaced apertures located in the bottom of the centrifuge.

Abstract: A rotating seal for a continuous flow centrifuge is disclosed. The rotating seal is mounted at the center of mass of the rotor to reduce vibration of the seal. The nonrotating portion of the rotating seal is maintained in contact with the rotating portion of the seal by a three point spring secured to a housing which is resiliently mounted to the chamber which encloses the rotor. In this manner, the nonrotating disk is able to follow the reduced amplitude vibrations of the rotating disk with reduced leakage.

Abstract: The disclosure is directed to a cartridge type centrifuge for separating particulate matter from fluids. The cartridge comprises a plurality of flow stages, each of which consists of alternately wrapped layers of flat and corrugated paper defining a plurality of vertical passages, the corrugations determining the space between passages. To effect uniform flow throughout all vertical passages, which brings maximum particle separation efficiency, the centrifuge includes a unique baffle which causes all fluid to flow through an area of maximum angular momentum.

Abstract: The apparatus includes a powered bowl assembly having a tubular shaft journalled within a base of the apparatus. A pressurized air flow is discharged into slurry in the bowl assembly via a circular array of bubble generators. An impellor discharges the slurry outwardly against an upwardly inclined annular surface of the bowl assembly to cause the slurry to merge upwardly with the streams to promote flotation. Slurry within the bowl assembly forms a vortex with particle flotation forming a froth layer inwardly of a slurry vortex. The froth exits the bowl assembly upwardly past a barrier partially closing the bowl assembly. Heavier gangue particles exit via an outlet about the bowl assembly periphery. A collector shroud is partitioned to receive the froth and the heavier waste material. A modified form of the apparatus includes an independently powered bowl assembly and impellor.