EP0237067A2 - Centrifugeuse à paroi pleine - Google Patents

Centrifugeuse à paroi pleine Download PDF

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Publication number
EP0237067A2
EP0237067A2 EP87103581A EP87103581A EP0237067A2 EP 0237067 A2 EP0237067 A2 EP 0237067A2 EP 87103581 A EP87103581 A EP 87103581A EP 87103581 A EP87103581 A EP 87103581A EP 0237067 A2 EP0237067 A2 EP 0237067A2
Authority
EP
European Patent Office
Prior art keywords
solid
drum
sediment
inner rotor
rotor part
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.)
Withdrawn
Application number
EP87103581A
Other languages
German (de)
English (en)
Other versions
EP0237067A3 (fr
Inventor
Herbert Dipl.-Ing. Schiele
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of EP0237067A2 publication Critical patent/EP0237067A2/fr
Publication of EP0237067A3 publication Critical patent/EP0237067A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B04B2001/2041—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 baffles, plates, vanes or discs attached to the conveying screw
    • 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 a solid bowl centrifuge according to the preamble of claim 1.
  • a centrifuge of this type is known from DE-OS 33 01 099, in which both the solids sedimenting on the inner wall of the solid jacket drum and the liquid clear phase are discharged in the conically enlarged area of the solid jacket centrifuge, with guide plates attached to the inner rotor and to the solid jacket drum Push sedimenting sludge phase through the entire radial level and stir with axial and circumferential flow components.
  • baffles which detect both the solid and the liquid phase at the same time, cause a mixing effect which counteracts the desired separation of the two phases.
  • the invention is therefore based on the object of improving a solid-bowl centrifuge of the type mentioned in such a way that an increased separation effect is achieved with reduced energy expenditure.
  • the invention is then based on the idea of creating a flow space for the clear phase which arises in the radially inner region, from which the heavy phase components have already largely separated, in which an unimpeded axial flow with a slight spiral flow component can occur without the heavy phase components deposited in the radially outer region are carried away by this flow.
  • the heavy phase components are held within the surface elements located in the radially outer region and shielded from the flow of the clear phase taking place in the radially inner region. A turbulence caused by baffles penetrating both phase areas simultaneously is therefore excluded. It is known from DE-OS 33 01 099 (FIG.
  • the radially directed sludge inlet channels also act in the sense of a smooth flow, which ensure that the sludge is already introduced with the flow component accelerated to the peripheral speed near the inner wall of the solid jacket drum. A radial speed profile with the shear currents interfering with the separation process can thus be avoided and it is ensured that the sedimentation process can start effectively at the beginning of the drum.
  • the surface elements designed, for example, in the form of a band screw cause an intensive shear stress on the sediment when it is accumulated on the baffle plate with increasing compression and swells against the axial conveying direction of the belt screw over its inner edge.
  • the shear forces acting during this constant shifting of the deposited phases favor the further compacting of the solid phase components.
  • a throttle with a variable throttle cross-section can be arranged in the sediment discharge area and can be controlled via a measuring device for the viscosity of the sediment which is connected downstream of the throttle.
  • a variable throttle is arranged in the discharge area for the clear phase, which can be controlled via a viscosity measuring device arranged in the discharge area for the sediment.
  • the throttle cross-sectional area can be changed by an axial displacement of the baffle plate, so that the width of the annular gap delimited by the edge of the baffle plate and the inner wall of the baffle plate can be regulated because of the conically widening solid jacket drum.
  • openings closed by closure flaps are provided in the ring region of the solid bowl drum, through which the sediment discharge space is radially limited to the outside.
  • Coarse parts can attach themselves to the depressions formed by these closed openings, which can then be detected by a coarse material sensor attached to the baffle plate and generate a control pulse by braking or blocking them in a torque sensor device arranged in the drive unit for the inner rotor part and the solid jacket drum which the flaps are briefly opened via an actuator. This means that the coarse material can be discharged to the outside in an annular gutter without interrupting operation.
  • the solid bowl centrifuge 1 consists essentially of a closed, conically widening solid bowl drum 2 and an inner rotor part 3 coaxially mounted therein.
  • the solid bowl drum 2 has on its two end faces 4 and 5 hollow shafts 6 and 7, which are separated from the shaft parts 8 and 9 of the inner rotor part 3 are enforced.
  • the hollow shafts 6 and 7 are mounted in a housing 10 enclosing the solid jacket drum 2, whereas the inner rotor part 3 with its shaft parts 8 and 9 is mounted in the hollow shafts 6 and 7.
  • the inlet channel 13 for the sludge in the form of a hollow bore formed in the shaft part 8, which branches into radial sludge inlet channels 14 inside the solid jacket drum 2.
  • the inner rotor part 3 carries, on thin holder arms 15, surface elements 16 which are arranged at a short distance from the inner wall of the solid jacket drum 2 and have only a small radial extent.
  • the surface elements are set so that the sludge particles entered in the solid casing drum 2 experience a transport pulse to the conically widening end of the solid casing drum 2 when the inner rotor part 3 rotates relative to the solid casing drum 2.
  • a continuous belt auger can also be used instead of the individual surface elements.
  • essentially equivalent conveying elements such as paddle snails and scrapers inclined to the main axis of the solid bowl centrifuge, can be used.
  • a baffle plate 17 is fixed within the solid casing drum 2 on the inner rotor part 3, the edge of which defines an annular gap 18 with the inner wall of the solid casing drum 2.
  • the inner space enclosed by the solid casing drum 2 and its end faces 4 and 5 is divided by the baffle plate 17 into a compacting space 19 and a sediment discharge space 20, the ring area 21 of the solid casing drum 2 assigned to the sediment discharge space having openings 22 distributed over the circumference, which are provided by closure flaps 23 are closed.
  • the baffle plate 17 On the side facing the sediment discharge space 2, the baffle plate 17 carries radially inwardly directed sediment discharge channels 24, which merge into axial sediment discharge channels 25 arranged in the shaft part 9.
  • the sediment discharge channels 25 open into an annular, non-rotating collecting vessel 26 from which a sediment outlet shaft 27 branches off.
  • radially directed liquid outlet channels 28 branch out from the compacting chamber 19 and merge into an axial liquid outlet channel 29, at the end of which a non-rotating line connection 30 is arranged.
  • a coarse material sensor 31 is fastened to the baffle plate 17 and can be moved past the openings 22 in the ring region 21 at a short distance.
  • the closure flaps 23 are coupled to a hydraulic actuation device 32, which can be controlled via a torque sensor device (not shown) arranged in the drive part 33.
  • the ring area 21 is surrounded by a non-circumferential gutter 34.
  • the solid bowl centrifuge 1 of the sludge is fed into the vicinity of the inner wall of the solid bowl drum 2 via the inlet channel 13 and the sludge inlet channels 14, so that the sludge is already largely accelerated to the peripheral speed of the solid bowl drum 2 when it enters the compacting chamber 18.
  • This sludge entry which takes place with a relatively calmed flow, means that the sedimentation process of the solid phase can begin very close to the conically tapered end of the solid jacket drum.
  • the solid phase is detected in the radially outer area by the surface elements 16 and conveyed in the direction of the conically widened end of the solid jacket drum 2.
  • the radial height of the solid phase increases in the direction of the conical widening and exceeds the radial height of the surface in the area of the baffle plate 17 Cheniata 16, because the solid phase components, due to throttling effects in the sediment discharge area, build up on the baffle plate 17 and swell against the axial conveying direction of the surface elements over their radially inner edge, whereby the sediment components are repeatedly exposed to a constant shear stress, which a further Compacting the solid components results.
  • the solid sediment components pass through the annular gap 18 into the sediment discharge space 20, from which the sediment passes through sediment outlet channels 24 which are firmly connected to the baffle plate 17 and through sediment discharge channels 25 into the non-rotatable collecting vessel 26 which can be emptied via the sediment outlet shaft 27.
  • Coarse material particles settling in the openings 22 cause a rotation delay in the drive unit 33 when the coarse-level sensor 31 rotating with the baffle plate 17 hits, as a result of which the torque sensor device responds and generates a control pulse for opening the closure flaps 23 by means of the closure flap actuating device 32. Since the opening process takes place only for a short time, the removal of coarse material parts can be carried out without interrupting the normal operation of the solid bowl centrifuge.
  • the clear phase which forms in the radially inner region of the compacting space 19 is discharged via liquid outlet channels arranged on the inner rotor part 3, via the liquid discharge channel 29 formed in the shaft part 9 and via a non-rotatable line connection 30.
  • the accumulation height of the solid phase that builds up in front of the baffle plate can be adjusted by means of a variable throttle arranged in the sediment discharge area, the throttle being expediently adjusted as a function of the measured variables of a viscosity measuring device for the discharged sediment.
  • a variable throttle is arranged in the discharge area for the clear phase and can be controlled as a function of the measured variables of a viscosity measuring device for the sediment discharged.
  • the consistency or the residual moisture of the sediment can be influenced, for example in order to avoid a blockage in the sediment discharge area due to excessive drainage of the sediment or a too rapid drainage of the sediment due to insufficient drainage.
EP87103581A 1986-03-14 1987-03-12 Centrifugeuse à paroi pleine Withdrawn EP0237067A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863608664 DE3608664A1 (de) 1986-03-14 1986-03-14 Vollmantelzentrifuge
DE3608664 1986-03-14

Publications (2)

Publication Number Publication Date
EP0237067A2 true EP0237067A2 (fr) 1987-09-16
EP0237067A3 EP0237067A3 (fr) 1987-12-23

Family

ID=6296421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103581A Withdrawn EP0237067A3 (fr) 1986-03-14 1987-03-12 Centrifugeuse à paroi pleine

Country Status (4)

Country Link
US (1) US4784634A (fr)
EP (1) EP0237067A3 (fr)
JP (1) JPS62221458A (fr)
DE (1) DE3608664A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322516A2 (fr) * 1987-12-24 1989-07-05 Klöckner-Humboldt-Deutz Aktiengesellschaft Centrifuge à bol plein
EP0602670A2 (fr) * 1992-12-18 1994-06-22 Tsukishima Kikai Co. Ltd. Appareil centrifuge de concentration
AU655255B2 (en) * 1991-03-07 1994-12-08 E.I. Du Pont De Nemours And Company Herbicidal pyridine sulfonamide
CN104289324A (zh) * 2014-09-15 2015-01-21 江苏华东锂电技术研究院有限公司 离心分离装置

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911320A1 (de) * 1989-04-07 1990-10-11 Kloeckner Humboldt Deutz Ag Zentrifuge zum kontinuierlichen trennen von stoffen unterschiedlicher dichte
DE3921327A1 (de) * 1989-06-29 1991-01-03 Kloeckner Humboldt Deutz Ag Wehr zum einstellen des fluessigkeitsstandes in vollmantelzentrifugen
DE4005755A1 (de) * 1989-10-17 1991-04-18 Kloeckner Humboldt Deutz Ag Vollmantel-schneckenzentrifuge
US5328441A (en) * 1991-12-04 1994-07-12 Carr Engineering Associates, Inc. Imperforate bowl centrifugal separator with solids gate
US5272604A (en) * 1992-04-21 1993-12-21 Rich Lin Cyclonic liquid ornament
US5354255A (en) * 1992-12-17 1994-10-11 Alfa Laval Separation Inc. Decanter centrifuge with conveyor capable of high speed and higher flow rates
US5643169A (en) * 1995-06-06 1997-07-01 Baker Hughes Incorporated Decanter centrifuge with adjustable gate control
US5695442A (en) * 1995-06-06 1997-12-09 Baker Hughes Incorporated Decanter centrifuge and associated method for producing cake with reduced moisture content and high throughput
SE504616C2 (sv) * 1995-07-25 1997-03-17 Centritech Hb Anordning och förfarande för diskontinuerlig separering av partiklar ur en vätska genom centrifugalsedimentering
SE505557C2 (sv) * 1995-12-21 1997-09-15 Alfa Laval Separation Ab Dekantercentrifug
US5653674A (en) * 1996-03-27 1997-08-05 Baker Hughes Incorporated Decanter centrifuge with discharge opening adjustment control and associated method of operating
US6312610B1 (en) * 1998-07-13 2001-11-06 Phase Inc. Density screening outer wall transport method for fluid separation devices
US6755969B2 (en) 2001-04-25 2004-06-29 Phase Inc. Centrifuge
US6805805B2 (en) * 2001-08-13 2004-10-19 Phase Inc. System and method for receptacle wall vibration in a centrifuge
US6706180B2 (en) * 2001-08-13 2004-03-16 Phase Inc. System for vibration in a centrifuge
DE10261520A1 (de) * 2002-12-23 2004-07-08 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge mit einstellbarem Feststoffaustrag
WO2004080601A2 (fr) 2003-03-11 2004-09-23 Phase Inc. Centrifugeuse a decharge modulable des materiaux denses
US6971525B2 (en) 2003-06-25 2005-12-06 Phase Inc. Centrifuge with combinations of multiple features
WO2005011848A1 (fr) 2003-07-30 2005-02-10 Phase Inc. Systeme de filtration et procede de separation de fluide dynamique
EP1663461A4 (fr) 2003-07-30 2009-01-14 Phase Inc Systeme de filtration a nettoyage ameliore et separation de fluide dynamique
US7282147B2 (en) 2003-10-07 2007-10-16 Phase Inc. Cleaning hollow core membrane fibers using vibration
SE531141C2 (sv) * 2007-05-10 2009-01-07 Alfa Laval Corp Ab Centrifugalseparator med transportörgänga som förhindrar avskiljda partiklar att täppa till rotorns insida
DK200970026A (en) 2009-06-12 2010-12-13 Alfa Laval Corp Ab A centrifugal separator
US8590713B2 (en) 2010-05-26 2013-11-26 Claude Laval Corporation Centrifugal separator
US8678204B2 (en) * 2011-06-26 2014-03-25 Claude Laval Corporation Centrifugal separator
US20130306573A1 (en) * 2011-07-19 2013-11-21 Jacob G. Appelbaum System and method for cleaning hyrocarbon contaminated water
CN103586141B (zh) * 2012-08-15 2016-09-28 钦州鑫能源科技有限公司 离心分离装置
CN108067355A (zh) * 2016-11-16 2018-05-25 浙江三拓重工科技有限公司 一种双锥并流卧螺离心机
CN108067356A (zh) * 2016-11-16 2018-05-25 浙江三拓重工科技有限公司 一种双锥并流卧螺离心机的转子
DE102018000057A1 (de) * 2018-01-05 2019-07-11 Guntram Krettek Zentrifuge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR902500A (fr) * 1942-02-25 1945-08-31 Leipziger Maschb Ges W Uhland Essoreuse pour séparer les éléments solides contenus dans un mélange de solides et de liquides
DE913880C (de) * 1952-03-18 1954-06-21 Starcosa Maschinen Und Appbau Trennschleuder
FR2546419A1 (fr) * 1983-05-24 1984-11-30 Kloeckner Humboldt Wedag Appareillage pour deshydrater de la boue dans la zone de centrifugation d'une centrifugeuse a enveloppe pleine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610482A (en) * 1945-04-18 1948-10-15 Separator Ab A method of centrifugal separation of sludge-containing liquids
US3279687A (en) * 1963-05-24 1966-10-18 Bird Machine Co Centrifuge
US3279688A (en) * 1964-08-03 1966-10-18 Bird Machine Co Centrifuge
US3228594A (en) * 1965-02-05 1966-01-11 Clifford L Amero Centrifugal separator
US3501346A (en) * 1966-12-22 1970-03-17 Sugar Cane Growers Coop Treatment of sugar mill clarifier mud
US3795361A (en) * 1972-09-06 1974-03-05 Pennwalt Corp Centrifuge apparatus
DE3027020A1 (de) * 1980-07-17 1982-02-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Vollmantelzentrifuge zum stoffaustausch zwischen fluessigkeiten
DD205825A1 (de) * 1982-05-28 1984-01-11 Dietrich Eichler Vollmantel-schneckenzentrifuge
DE3301099A1 (de) * 1983-01-14 1984-12-06 KHD Humboldt Wedag AG, 5000 Köln Vorrichtung zur entfeuchtung von schlamm im zentrifugalfeld einer vollmantel-zentrifuge
DE3471015D1 (en) * 1984-03-27 1988-06-16 Kotobuki Giken Kogyo Kk Screw decanter type centrifugal concentrating machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR902500A (fr) * 1942-02-25 1945-08-31 Leipziger Maschb Ges W Uhland Essoreuse pour séparer les éléments solides contenus dans un mélange de solides et de liquides
DE913880C (de) * 1952-03-18 1954-06-21 Starcosa Maschinen Und Appbau Trennschleuder
FR2546419A1 (fr) * 1983-05-24 1984-11-30 Kloeckner Humboldt Wedag Appareillage pour deshydrater de la boue dans la zone de centrifugation d'une centrifugeuse a enveloppe pleine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322516A2 (fr) * 1987-12-24 1989-07-05 Klöckner-Humboldt-Deutz Aktiengesellschaft Centrifuge à bol plein
EP0322516A3 (fr) * 1987-12-24 1990-04-25 Klöckner-Humboldt-Deutz Aktiengesellschaft Centrifuge à bol plein
AU655255B2 (en) * 1991-03-07 1994-12-08 E.I. Du Pont De Nemours And Company Herbicidal pyridine sulfonamide
EP0602670A2 (fr) * 1992-12-18 1994-06-22 Tsukishima Kikai Co. Ltd. Appareil centrifuge de concentration
EP0602670A3 (fr) * 1992-12-18 1994-12-21 Tsukishima Kikai Co Appareil centrifuge de concentration.
US5542903A (en) * 1992-12-18 1996-08-06 Tsukishima Kikai Co., Ltd. Centrifugal liquid separating machine using deceleration vanes
US5685819A (en) * 1992-12-18 1997-11-11 Tsukishimi Kikai Co., Ltd. Centrifugal liquid separating machine using deceleration vanes
CN104289324A (zh) * 2014-09-15 2015-01-21 江苏华东锂电技术研究院有限公司 离心分离装置

Also Published As

Publication number Publication date
DE3608664A1 (de) 1987-09-17
JPS62221458A (ja) 1987-09-29
EP0237067A3 (fr) 1987-12-23
US4784634A (en) 1988-11-15

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Inventor name: SCHIELE, HERBERT, DIPL.-ING.