EP0104966B1 - Zentrifuge mit Energierückgewinnung - Google Patents

Zentrifuge mit Energierückgewinnung Download PDF

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Publication number
EP0104966B1
EP0104966B1 EP83401660A EP83401660A EP0104966B1 EP 0104966 B1 EP0104966 B1 EP 0104966B1 EP 83401660 A EP83401660 A EP 83401660A EP 83401660 A EP83401660 A EP 83401660A EP 0104966 B1 EP0104966 B1 EP 0104966B1
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EP
European Patent Office
Prior art keywords
drum
chamber
liquid
centrifuge according
outer drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83401660A
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English (en)
French (fr)
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EP0104966A2 (de
EP0104966A3 (en
Inventor
Raymond Fernand Schlegel
René Pierre Bourassin
Michel André Lapautre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bertin Technologies SAS
Original Assignee
Bertin et Cie SA
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Publication date
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Publication of EP0104966A2 publication Critical patent/EP0104966A2/de
Publication of EP0104966A3 publication Critical patent/EP0104966A3/fr
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Publication of EP0104966B1 publication Critical patent/EP0104966B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/06—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of cylindrical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/06—Fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2058—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with ribbon-type screw conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2066—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with additional disc stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2075—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with means for recovering the energy of the outflowing liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2083—Configuration of liquid outlets

Definitions

  • the invention relates to an energy recovery centrifuge, more particularly intended for the separation of immiscible liquids of different densities and in which solid particles are dispersed, the centrifuge comprising two rotary coaxial drums, a device for discharging solid materials. and an energy recovery device.
  • patent FR-A-1,455,032 describes a centrifuge with a plate separator.
  • the plate separator is integral with a shaft which rotates axially in an external drum which is itself rotating.
  • the liquid to be purified crosses the separator from the center to the periphery.
  • the plate separator includes a pre-clarification propeller and, at its periphery, a propeller which is integral with it and which transports the materials deposited on the external drum towards the downstream end of the centrifuge.
  • the purified liquid and the deposited materials exit through openings provided on the external drum.
  • the centrifuge has a considerable length as a result of the preclarification propeller. The energy of the purified liquid is not recovered at its exit.
  • US-A-2,741,793 describes a centrifuge with a vertical axis specially adapted to low flow rates and liquids with little charge, such as those in engine oil circuits.
  • the centrifuge only has a rotating drum and the extraction of separated materials is done by disassembly.
  • the oil to be purified moves in a centripetal direction in the plate separator and the purified liquid exits through ejectors in the form of tangential jets which strike the wall of a fixed circular chamber.
  • the outlet reaction turnstile allows energy from the purified liquid to be recovered, which relieves the pump of the oil circuit accordingly.
  • Such a centrifuge does not make it possible to process large flow rates of liquids whose concentration of impurities after purification must be 100 times lower than that of the starting liquid.
  • the present invention concentrates a device as referred to in the preamble of claim 1 (FR-A-1.455.032) and as set out in claim 1.
  • the centrifuge obviates the drawbacks of known centrifuges and allows the treatment of high flow rates with minimized energy consumption, while having particularly reduced dimensions.
  • It comprises a rotor essentially constituted by a stack of centrifugation plates rotating at high speed between two coaxial cylindrical drums, means for continuously introducing and discharging the liquid, said liquid completely filling the internal space of the rotor, and means for selective extraction of separated impurities.
  • a first characteristic of the machine is that in the interval between the external cylindrical drum and the internal drum, driven in coaxial rotation independently and respectively provided with means for evacuating the separate phases, is stacked plates which rotates with the internal drum and which is supplied with liquid to be purified by an axial inlet and a centrifugal impeller.
  • Another characteristic of the invention is a device for recovering the energy of the liquid discharged.
  • This device comprises at the outlet of the purified liquid an outlet impeller which comprises vanes integral with the internal drum and forming a centripetal turbine, this turbine being followed by tangential ejectors integral with the external drum and constituting a reaction turnstile, arranged so that the absolute exit speed of the purified liquid is substantially zero.
  • the turbine and the turnstile restore the majority of the angular momentum communicated to the liquid in the form of a torque-motor, which makes it possible to reduce, to compensate for friction losses, the power required in continuous mode for the operation of the machine.
  • the shaft 4 is supported by a double ball bearing 5 between the flanges which is provided with a pulley 6 keyed onto the shaft and driven by a belt (not shown).
  • the hollow shaft 4 is connected by a tight elastic coupling 7 to the tubular end 8 of the inner drum A.
  • the corresponding end 9 of the outer drum B is supported by an outer ball bearing 10 and has a pulley 11 which allows its drive at a speed different from that of the inner drum.
  • a sealed ball bearing 12 is disposed between the exterior and interior drums.
  • the other end of the outer drum B is supported by a ball bearing 13.
  • the corresponding end of the inner drum A is held by a sealed ball bearing 14 disposed between the drums.
  • the centrifugation bowl forming the largest part of the external drum B, consists of a cylindrical hollow body extended on the upstream side by a cylindroconical flange secured to its end 9 supported by the bearing 10, and on the downstream side by a flared flange 15 carrying a circular flange 16.
  • On this flange is fixed a head 17 whose cylindrical end 18 is supported by the bearing 13.
  • the head 17 internally carries a movable conical bottom 19, which slides tightly on the one hand, on two stepped surfaces 20, 21 provided in the part of the head adjacent to the flange 16 and on the other hand, in a tubular sleeve 22 attached to the head 17 (see the enlarged view of FIG. 2).
  • the movable bottom 19 delimits on the one hand with the flared flange 15 a mud chamber 23 and on the other hand with the part of the inner head 17 within its internal reach 21, a pressure chamber 24 supplied via the channel 25 from a weir 26 which will be described later.
  • the flange 16 of the bowl, pressed against the periphery of the head 17, is not continuous but has bosses 27 regularly distributed all around the flange, separated by passages 28 and crossed by bolts mounting 29.
  • the periphery When the movable base 19 is in the position shown in FIGS. 1 and 2, the periphery is axially pressed against an internal radial surface of the flange 16 blocks any communication between the interior of the bowl and the exterior. When the bottom 19 is moved to the right of the drawing, the periphery uncovers the passages 28, which allow, by a simple centrifugal effect, the emptying of the mud chamber 23.
  • the internal drum A is connected by its tubular end 8 to the end of the hollow shaft 4 through which the effluent or the mixture to be treated is introduced, which reaches the annular space comprised between the external surface 30 of the inner drum A and the inner wall of the outer drum B by inclined channels 31 forming an input wheel.
  • the outer surface 30 carries longitudinal ribs 32 forming keys by which is driven in rotation a stack of conical plates 33 (shown partially). These plates of frustoconical shape are spaced from each other by stamped or attached radial spacers 33a, their spacing being a function of the size of the particles to be separated and the expected flow.
  • the small bases of the plates are directed downstream in the axial direction of circulation of the liquid to be treated.
  • the stack of plates is maintained on the upstream side by a plate 34 and on the downstream side by a plate press 35.
  • a scraper screw 36 At the periphery of the plates is fixed, by means of the plate 34, a scraper screw 36.
  • This screw is constituted for example by a rectangular profile wound in a helix on a cage 37 formed by the assembly of peripheral rings 37a and longitudinal bars 37b.
  • the outside diameter of the screw 36 is slightly smaller than the inside diameter of the bowl B so that it can scrape the solid particles accumulated on the wall and discharge them axially towards the mud chamber 23, the progression resulting from the difference in the speeds of rotation between the inner drum A and the outer drum B.
  • a radial centripetal impeller 38 in the form of a frustoconical envelope integral with the plate press 35 on the surface of which vanes 39 are fixed projecting into the space between the plate press 35 and the movable bottom 19 of the outer drum B.
  • the impeller 38 forms the first stage of the energy recovery device D, the second stage of which consists of a series of ejectors 40 forming a tourniquet fixed on the cylindrical surface 41 of the external drum B extending its head 17.
  • the ejectors 40 formed of added blocks 42 receive the purified fluid by radial channels 43 (FIG. 4) making communicate with the interior of the bowl their ejection nozzles 44, the axis of which is directed substantially tangentially with respect to the cylindrical surface 41 of the head 17 of the outer drum B.
  • the tangential jets coming from the ejectors 40 reach a crown of fixed vanes 45, disposed between two radial flanges 46 attached in the cylindrical volute 47 for the outlet of the purified liquid. This volute is fixed to the bearing B of the centrifuge support.
  • the vanes 45 are advantageously adjustable in orientation to conserve the residual angular momentum and arranged according to a spiral to facilitate the evacuation of fluid.
  • the centrifuge is supplied in the axis, the rotation of the liquid creates an overpressure at all points where P is the density of the fluid, ⁇ the angular speed of rotation and R the radius of gyration at the point considered.
  • the pressure is converted into speed in the nozzle 44 of an ejector according to the equation where W is the relative speed of the fluid with respect to the nozzle. If the orientation and the section of the nozzles are suitably chosen, the speed W thus created is equal in module to the peripheral speed of rotation.
  • the central part of the internal drum A has an axial cylindrical cavity 48 placed in communication with the outside of the drum by orifices 49. These orifices allow the passage of the lightest fluid which flows along the external wall 30 and comes gather on the periphery of the cavity 48 which constitutes a reservoir from which an extraction tube 50 permanently scoops the fluid, held by centrifugation against the wall, to evacuate it towards the outside of the centrifuge.
  • the solids evacuation device is composed as previously described of the scraper screw 36 and of the hydraulic evacuation device C, a part of which is constituted by the movable base 19.
  • the overflow 26 is formed of a cylindrical ring 51 fixed on the head 17 and carrying in inner projection two rings 52, 53, axially spaced and of unequal heights, the ring 52 having an inner diameter smaller than that of the ring 53
  • the ring 52 delimits with the external face 54 of the head 17 a first channel 55 and with the ring 53 a second channel 56.
  • a water supply stock 57 passes through the central openings of the rings and opens into the first channel 55, the bottom of which communicates by a channel 58 with an annular chamber 59 situated at the periphery of the movable bottom 19 between the stepped surfaces 20, 21 of the head 17 of the external drum B.
  • This chamber provided with a leakage orifice calibrated 60 opening into a passage 28, receives continuously by the fixed butt 57, the channel 55 and the channel 58 a flow of water greater than that flowing through the leak 60.
  • the excess water overflows from the first channel in filling the second channel 56.
  • a radial perc channel é in the bottom of the chamber 56 communicates via the channel 25 with the pressure chamber 25 delimited by the movable bottom 19 and the internal face 61 of the head 17. Due to the rotation the centrifuged water exerts a pressure sufficient against the movable base 19 to maintain its periphery in axial abutment on the radial surface 62 of the flange 16, position in which it closes the passages 28 making the mud chamber communicate with the outside.
  • the water supply is interrupted by the butt 57.
  • the leakage orifices 60 ensure the emptying of the water chamber 59 and orifices 63 judiciously placed allowing the pressure chamber 24 to be emptied.
  • the bottom 19 closes when the weir 26 is powered again.
  • the fluid to be treated enters continuously into the centrifuge which it completely fills, through the axial hollow shaft 8 in which it begins to acquire a relatively low speed of rotation.
  • a first speeding up is carried out during the passage of the fluid in the inclined channels 31 of the input wheel, connecting the hollow shaft to the annular space comprised between the drums in which the stacking of plates 33 rotates at high speed. , integral with the inner drum A.
  • the fluid to be purified then crosses the set of plates (arrows in strong line) where the centrifugal separation takes place and which constitutes a second stage of speed setting: in known manner, the fluid to be purified is accelerated by viscosity in the spaces separating the plates 33 so that the solid particles are centrifuged against the wall of the external drum B, while the heavier fluid thus purified (arrows in dashed lines) flows axially in the space located at the periphery of the stack of plates and is brought back towards the axis by crossing the centripetal impeller 38, which recovers part of its rotational energy.
  • the lightest fluid migrates (arrows in thin lines) towards the inner periphery of each plate and coalesces in the form of a film which flows towards the axis of the centrifuge. Arrived at the inner edge of the plate, the film is divided into large droplets which are captured very quickly on the surface 30 of the inner drum A and flow through the orifices 49 into the tank 48 where it is recovered by the scooping tube 50.
  • the fixed vanes 45 and the volute 47 exploit the balance of kinetic energy of the fluid to create the slight pressure necessary for its evacuation.
  • Said evacuation device consists as previously described of the scraper screw 36 and the hydraulic evacuation device.
  • the mud chamber 23 is defined between the inner wall of the flared flange 15 and the conical fixed bottom 64 forming the inner wall of the head 17.
  • the flange 16 of the bowl pressed against the periphery of the head 17, carries evenly distributed all around the flange, radial orifices 65 which communicate by longitudinal passages 66 with radial grooves 67 formed in the face of the flange 16.
  • the longitudinal passages 66 receive sockets 68, one of the ends of which forms the seat of valves 69 provided in the periphery of the head 17.
  • the channels 58 provided in the head 17, open on one side into the channel 55, receiving water from the supply stock 57, and on the other into the valve chambers 70.
  • the movable parts of the valves 71 slide with play in bores 72 drilled parallel to the axis at the periphery of the head. Sealed passages 73, mounted on the free openings of the bores, carry a thread 74 receiving screw stops 75. These stops make it possible to adjust the opening between the movable bodies of the valves and their seats.
  • the operating mode of the valve sludge evacuation device is as follows: the water arriving through the supply stock 57 pours into the channel 55 of the weir 26 and is sent under the action of centrifugal force, by the channel 58 in the valve chamber 70.
  • the water exerts a pressure against the rear face of the movable body of the valve and maintains it against the seat 68 by closing the communication between the mud chamber 23 and the groove 67 leading to the outside.
  • Part of the water in the chamber 70 flows around the valve body 71 towards the outside as a result of the clearance provided between the bore and the mobile body.
  • the excess water (relative to the continuous flow due to the play) arriving in the channel 55 escapes through the central opening of the ring 53 of the weir 26.
  • the continuous leakage of water that occurs as a result of the game is intended to avoid the deposition of solids which could cause the mobile body to block in its bore.
  • the solids discharge sections (5 to 10 mm 2 ) are chosen according to the volume of the mud chamber and the flow velocities to obtain easily controllable opening times (10 to 30 s) without risk of disturbing the liquid flows.
  • the construction described above is relatively simpler than that with a movable bottom.
  • the overflow 26 only has more than one channel 55, and is no longer in communication with the chamber 24.
  • the moving parts (valves) are protected against the accumulation of solids by a continuous circulation of water.
  • scraper vanes 76 which sweep the chamber 23 are provided at the end of the scraper screw 36 and of the vanes 39 in order to avoid asymmetrical accumulations of solids during the emptying phases.

Landscapes

  • Centrifugal Separators (AREA)

Claims (11)

1. Hochleistungs-Zentrifuge für industrielle Anwendungen mit einem verbesserten energetischen Wirkungsgrad, zur Reinigung einer Flüssigkeit, in der Feststoffpartikel einer größeren Dichte suspendiert und/oder Tröpfchen einer anderen, eine geringere Dichte aufweisenden Flüssigkeit emulgiert sind, deren Rotor im wesentlichen durch eine geschichtete Anordnung von Tellern zum Zentrifugieren gebildet wird, die sich mit großer Geschwindigkeit zwischen zwei zylindrischen, zueinander koaxialen Trommeln drehen, mit Mitteln zum kontinuierlichen Einführen und Austragen der Flüssigkeit, mit Mitteln zum voneinander getrennten Abführen der abgetrennten Verunreinigungen, die im Zwischenraum zwischen einer zylindrischen äußeren Trommel (B) und einer inneren Trommel (A) angeordnet sind, welche Trommeln unabhängig voneinander angetrieben werden, eine koaxiale Drehbewegung ausführen und mit Mitteln zum Austragen der voneinander getrennten Phasen versehen sind, wobei die Anordnung von Tellern (33) sich mit der inneren Trommel (A) dreht und über einen axialen Zulauf mit der zu reinigenden Flüssigkeit beschickt wird, dadurch gekennzeichnet, daß die gereinigte Flüssigkeit aus dem genannten Zwischenraum über eine Austrittsscheibe austritt, welch leitztere durch zusammenhängend mit der inneren Trommel (A) ausgestaltete, eine Zentripetalturbine darstellende Schaufeln (39) gebildet wird, daß die Flüssigkiet anschließend über tangential gerichtete, zusammenhängen mit der äußeren Trommel (B) ausgestaltete, ein Reaktionsrad darstellende Düsen (40) abgeführt wird, daß das Reaktionsrad derart ausgelegt ist, daß die absolute Austrittsgeschwindigkeit der gereinigten Flüssigkeit im wesentlichen gleich Null ist, so daß der größte Teil des auf die Flüssigkeit übertragenen Impulsmomentes mittels der Zentripetalturbine sowie des Reaktionsrades als Drehmoment wiedergewonnen wird und demzufolge die für einen kontinuierlichen Betrieb erforderliche Antriebsleistung auf den Ausgleich von Reibungsverlusten beschränkt ist.
2. Zentrifuge nach Anspruch 1, bei weicher die aus den Düsen des Reaktionsrades austretenden, aus gereinigter Flüssigkeit bestehenden Flüssigkeitsstrahlen auf eine feste Beschaufelung treffen, dadurch gekennzeichnet, daß die Beschaufelung einstellbar und/oder spiralförmig gewunden in einem Spiralgehäuse (47) angeordnet ist.
3. Zentrifuge nach Anspruch 1 oder 2, bei welcher die Mittel zum Austragen der Feststoffpartikel aus einer, am Umfang der Anordnung von Tellern (33) angeordneten Austragsschnecke (36) besteht, durch welche die sich an der Wandung der äußeren Trommel (B) ansammelnden Partikel in eine, am Ende der äußeren Trommel (B) befindliche Kammer (23) überführt werden, dadurch gekennzeichnet, daß die Kammer (23) im Umfangsbereich über radial verlaufende, normalerweise durch den Umfangsteil eines axial beweglichen, am Ende der äußeren Trommel (B) angeordneten Bodenteils (19) verschlossene Durchlässe (28) in die Umgebung einmündet.
4. Zentrifuge nach Anspruch 3, dadurch gekennzeichnet, daß das bewegliche Bodenteil (19) und die äußere Trommel (B) eine Ringkammer (59) umgrenzen, die über eine genau bemessene Austrittsöffnung (60) in die Umgebung einmündet und wobei in die Ringkammer (59) eine solche Menge an Wasser oder einer anderen Flüssigkeit im Übermaß und unter einem solchen Druck eingebracht wird, daß das genannte Bodenteil (19) in einer Verschlußstellung gehalten wird.
5. Zentrifuge nach Anspruch 4, dadurch gekennzeichnet, daß die Ringkammer (59) über einen Kanal (58) mit dem Grundbereich einer Ringrille (55) in Verbindung steht, die auf der Außenwandung der äußeren Trommel (B) angeordnet ist und in Richtung auf deren Achse hin offen ist, wobei mittels eines fest angeordneten Einlaufs (57) Wasser in diese Ringrille (55) eingeleitet wird.
6. Zentrifugre nach Anspruch 5, dadurch gekennzeichnet, daß das bewegliche Bodenteil (19) und die äußere Trommel (B) eine zweite Ringkammer (24) umgrenzen, die innerhalb der erstgenannten Ringkammer angeordnet ist, die über sinnvoll angeordnet Kanäle (63) ins Innere der Trommel einmündet, wobei in die zweite Ringkammer (24) ein Teil des Wassers oder der anderen Flüssigkeit unter Druck eingeführt wird, welches sich ausgehend von der Ringrille (55) in eine benachbarte Ringrille (56) ergießt.
7. Zentrifuge nach Anspruch 6, dadurch gekennzeichnet, daß die Kammer (23) über solche Durchlässe in die Umgebung einmündet, die normalerweise mittels Ventilanordnungen (66, 69), die am Umfangsteil am Ende der äußeren Trommel (B) angeordnet sind, verschlossen werden.
8. Zentrifuge nach Anspruch 7, dadurch gekennzeichnet, daß die Ventilanordnungen (69) über einen Kanal (58) mit einer Ringrille (55) in Verbindung stehen, die auf der Außenwandung der Trommel (B) angeordnet ist, die in Richtung auf die Achse der Trommel (B) hin offen ist und in welche mittels eines festen Einlaufs (57) Wasser eingeleitet wird.
9. Zentrifuge nach Anspruch 1, dadurch gekennzeichnet, daß zwischen dem beweglichen Teil eines Ventils (71) und der dieses gleitfähig aufnehmenden Bohrung (72) ein Spiel vorgesehen ist, welches einen kontinuierlichen Ausfluß des aus der Ringrille (55) herrührenden Wassers ermöglicht.
10. Zentrifuge nach Anspruch 3, dadurch gekennzeichnet, daß die Mittel zum Austragen der Feststoffpartikel unter anderem aus Räumschaufeln (76) bestehen, durch welche die am Ende der äußeren Trommel (B) befindliche Kammer (23) geräumt wird.
11. Zentrifuge nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Mittel zum Austragen der eine geringere Dichte aufweisenden Flüssigkeit aus radialen, die Wandung der inneren Trommel (A) durchdringenden Durchlässen (49) und einem festen, axial verlaufenden Auslaug (50) bestehen, durch weichen die in der genannten Trommel gesammelte Flüssigkeit abgeschöpft wird.
EP83401660A 1982-08-27 1983-08-12 Zentrifuge mit Energierückgewinnung Expired EP0104966B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214702A FR2532198B1 (fr) 1982-08-27 1982-08-27 Centrifugeuse a recuperation d'energie
FR8214702 1982-08-27

Publications (3)

Publication Number Publication Date
EP0104966A2 EP0104966A2 (de) 1984-04-04
EP0104966A3 EP0104966A3 (en) 1985-09-11
EP0104966B1 true EP0104966B1 (de) 1988-12-07

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EP83401660A Expired EP0104966B1 (de) 1982-08-27 1983-08-12 Zentrifuge mit Energierückgewinnung

Country Status (9)

Country Link
US (1) US4508530A (de)
EP (1) EP0104966B1 (de)
JP (1) JPS5959261A (de)
KR (1) KR890000146B1 (de)
BR (1) BR8304641A (de)
DE (1) DE3378615D1 (de)
DK (1) DK159908C (de)
ES (1) ES8406901A1 (de)
FR (1) FR2532198B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639258A1 (en) * 1988-11-24 1990-05-25 Bertin & Cie Centrifuge for the purification of a liquid
JPH0332570A (ja) * 1989-06-27 1991-02-13 Okuma Mach Works Ltd 工具軸スリーブ交換式回転工具軸ユニット
US5637217A (en) * 1995-01-25 1997-06-10 Fleetguard, Inc. Self-driven, cone-stack type centrifuge
GB2314036B (en) * 1996-06-10 2000-02-02 Fram Europ Centrifugal filter
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DK389383D0 (da) 1983-08-25
DK389383A (da) 1984-02-28
BR8304641A (pt) 1984-04-10
KR840005670A (ko) 1984-11-15
ES525172A0 (es) 1984-08-16
DK159908B (da) 1990-12-31
EP0104966A2 (de) 1984-04-04
KR890000146B1 (ko) 1989-03-08
US4508530A (en) 1985-04-02
DK159908C (da) 1991-05-21
JPS5959261A (ja) 1984-04-05
FR2532198A1 (fr) 1984-03-02
EP0104966A3 (en) 1985-09-11
FR2532198B1 (fr) 1985-06-21
ES8406901A1 (es) 1984-08-16
DE3378615D1 (en) 1989-01-12

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