EP0409791A1 - Entraînement pour une centrifugeuse à décantation - Google Patents

Entraînement pour une centrifugeuse à décantation Download PDF

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Publication number
EP0409791A1
EP0409791A1 EP90810551A EP90810551A EP0409791A1 EP 0409791 A1 EP0409791 A1 EP 0409791A1 EP 90810551 A EP90810551 A EP 90810551A EP 90810551 A EP90810551 A EP 90810551A EP 0409791 A1 EP0409791 A1 EP 0409791A1
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EP
European Patent Office
Prior art keywords
hydraulic motor
motor
speed
drive
drive according
Prior art date
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Granted
Application number
EP90810551A
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German (de)
English (en)
Other versions
EP0409791B1 (fr
Inventor
Heinrich Weder
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.)
Elatronic AG
Original Assignee
Elatronic AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4240405&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0409791(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Elatronic AG filed Critical Elatronic AG
Publication of EP0409791A1 publication Critical patent/EP0409791A1/fr
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Classifications

    • 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
    • B04B1/20—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
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing

Definitions

  • the invention relates to a drive on a decanter centrifuge according to the preamble of independent claim 1.
  • Decanter centrifuges also called decanters for short, have been used for the separation of large quantities of mixtures of solids and liquids in continuous operation for many years.
  • An electric motor is usually used as the drive machine, which drives the drum by means of a belt pull, and the worm, which requires low relative speeds but high torques, is driven by a rotating mechanical gear as a torque converter, with the low-torque connection of the gearbox at rest System is supported.
  • a category of such drives uses the mechanically co-rotating transmission, at the low-moment connection of which a positive or negative slip is generated, the size of which can be adjusted as desired in a given range.
  • Another category of such drives dispenses with the mechanical transmission as a torque converter by using a rotating, slow-running, high-torque hydraulic motor, the rotor of which drives the screw and the housing of which is connected to the drum, with the supply from a pump station adjustable in quantity via a high-pressure rotary feedthrough to the rotating system is transmitted.
  • Such drive systems allow a completely independent screw relative speed from the main drive speed and, if the rotary feedthrough has a radial introduction, a coaxial arrangement of the two drive machines allows, as are listed, for example, in US Pat. No. 4,120,447 or FR-A-2 237 682. Such an arrangement makes it possible to dispense with belt drives, especially if the main drive machine does not have a constant speed. In both drive systems, the main drive machine is rigidly attached to the machine bed.
  • this waiver means the important elimination of bearing transverse forces due to the belt traction on the main machine bearing, which has an advantageous effect on the service life and operational safety of these highly stressed elements.
  • Such a structure is made even more difficult if the machine rotor has certain degrees of freedom compared to the stationary system, be it a radial-elastic bearing suspension for vibration-related reasons or a degree of freedom of axial angularity in the case of oscillating vertical machines.
  • a connection to the main drive machine can only be established here using expensive and space-consuming universal joint systems.
  • the invention has for its object to provide a drive of the type mentioned, which avoids the disadvantages mentioned above and which is still inexpensive to manufacture and operationally reliable.
  • the main drive machine is suspended on the machine rotor. Since the hydraulic motor is very light at high power, it can withstand vibrations without any significant repercussions. The high-speed hydraulic motor also absorbs strong vibrations close to the critical speed.
  • the non-rotating housing of the high-speed hydraulic motor is supported symmetrically and elastically on a stationary mass.
  • the feed lines for both machines are preferably flexible.
  • the drive has a high-torque, slow-running hydraulic motor I for generating a differential speed between the screw 1 and the drum 2 of the decanter centrifuge.
  • the stator 3 of the hydraulic motor I is rotatably connected to the drum 2, while the rotor 20 rotates with the screw 1.
  • the hydraulic motor I is supplied with hydraulic fluid via a rotary union D, which is known per se, and is supplied and discharged via flexible lines 11.
  • the drive also has a high-speed hydraulic motor II, which drives the above-mentioned equipment with drum 2 and screw 1 and hydraulic motor I.
  • the hydraulic motor I is, for example, a swash drum machine or swash plate machine known per se, and is built over its rotor shaft 4 on the rotating equipment. Hydraulic fluid is supplied and discharged via flexible lines 7, which are connected to the non-rotating housing 16 of the hydraulic motor II.
  • arms L With arms L, the torque of the housing 16 is supported on the stationary mass 13.
  • the torque of the housing 16 is preferably supported symmetrically and elastically on the mass 13 by a plurality of arms L.
  • the elastic support is implemented, for example, with a rubber-elastic support 12.
  • the arms L thus have no supporting function but merely prevent the Ge from rotating house 16.
  • the comparatively light hydraulic motor II can thus participate in vibrations of the rotor shaft 4, it can, so to speak, freely dance on this shaft 4.
  • the rotor shaft 4 rotates in a bearing 10 of the housing 16 and has a disk 14 arranged in the housing 16.
  • a rotor 9 has a plurality of pistons 8. The force of the pistons 8 on the disk 14 results in a torque on the rotor shaft 4 with which the drum system or the worm shaft 5 are driven directly.
  • the hydraulic motor II drives the drum system directly
  • the hydraulic motor II drives the worm shaft 5 directly.
  • the hydraulic motor I can be arranged outside a main bearing point B and according to FIGS. 3 and 4 within the main bearing point.
  • the connections of the rotating union D, which feed the hydraulic motor are accommodated in the housing 17 of the hydraulic motor II. This achieves a high degree of compactness, which can be increased in the housing 17 by not providing the said rotating union.

Landscapes

  • Centrifugal Separators (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP90810551A 1989-07-21 1990-07-18 Entraînement pour une centrifugeuse à décantation Expired - Lifetime EP0409791B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2734/89A CH680836A5 (fr) 1989-07-21 1989-07-21
CH2734/89 1989-07-21

Publications (2)

Publication Number Publication Date
EP0409791A1 true EP0409791A1 (fr) 1991-01-23
EP0409791B1 EP0409791B1 (fr) 1996-10-09

Family

ID=4240405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810551A Expired - Lifetime EP0409791B1 (fr) 1989-07-21 1990-07-18 Entraînement pour une centrifugeuse à décantation

Country Status (9)

Country Link
US (1) US5037372A (fr)
EP (1) EP0409791B1 (fr)
JP (1) JPH0360751A (fr)
AT (1) ATE143833T1 (fr)
AU (1) AU632346B2 (fr)
BR (1) BR9003589A (fr)
CH (1) CH680836A5 (fr)
DE (1) DE59010529D1 (fr)
RU (1) RU2038165C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042220A1 (fr) * 1998-02-17 1999-08-26 Westfalia Separator Ag Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages
WO2009115516A2 (fr) * 2008-03-20 2009-09-24 Gea Westfalia Separator Gmbh Système de transmission pour une centrifugeuse
CN102861677A (zh) * 2012-09-21 2013-01-09 江苏亿鑫离心机制造有限公司 高强度耐磨耐蚀的螺旋卸料沉降离心机及其制造工艺

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344570A (en) * 1993-01-14 1994-09-06 James E. McLachlan Method and apparatus for removing solids from a liquid
JP2741564B2 (ja) * 1993-01-25 1998-04-22 アイセロ化学 株式会社 包装用複合フィルム袋
US5681256A (en) 1994-11-10 1997-10-28 Nkk Corporation Screw decanter centrifuge having a speed-torque controller
US6699829B2 (en) 2002-06-07 2004-03-02 Kyzen Corporation Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds
US20040138040A1 (en) * 2003-01-15 2004-07-15 Hensley Gary L. Decanter centrifuge control
RU2325951C2 (ru) * 2003-04-22 2008-06-10 Вискотерм Аг Центрифуга с гидравлически установленным дифференциалом скорости вращения
ATE309049T1 (de) * 2003-05-19 2005-11-15 Andritz Guinard S A S Antriebssystem von einer zentrifuge
US20110034313A1 (en) * 2009-08-06 2011-02-10 Andritz Separation Inc. Centrifuge with hydraulic drive unit
WO2012034722A2 (fr) * 2010-09-13 2012-03-22 Hiller Gmbh Dispositif d'entraînement dans une centrifugeuse à vis

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237682A1 (fr) * 1973-07-21 1975-02-14 Cyphelly Ivan J
US4120447A (en) * 1975-10-23 1978-10-17 Flottweg-Werk Dr. Georg Bruckmayer Gmbh & Co. Kg Pressure-tight solid bowl screw centrifuge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH647959A5 (de) * 1980-05-16 1985-02-28 Glyco Antriebstechnik Gmbh Dekanterzentrifuge mit hydraulischem differenzantrieb.
DE3103029A1 (de) * 1981-01-30 1982-08-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Schneckenzentrifuge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237682A1 (fr) * 1973-07-21 1975-02-14 Cyphelly Ivan J
US4120447A (en) * 1975-10-23 1978-10-17 Flottweg-Werk Dr. Georg Bruckmayer Gmbh & Co. Kg Pressure-tight solid bowl screw centrifuge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042220A1 (fr) * 1998-02-17 1999-08-26 Westfalia Separator Ag Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages
US6387032B1 (en) 1998-02-17 2002-05-14 Westfalia Separator Ag Screw-type solid bowl centrifuge with multistage planetary gear train
WO2009115516A2 (fr) * 2008-03-20 2009-09-24 Gea Westfalia Separator Gmbh Système de transmission pour une centrifugeuse
WO2009115516A3 (fr) * 2008-03-20 2009-11-19 Gea Westfalia Separator Gmbh Système de transmission pour une centrifugeuse
US8444542B2 (en) 2008-03-20 2013-05-21 Gea Westfalia Separator Gmbh Gear apparatus for a centrifuge including a drive shaft having two hollow longitudinal channels for lubricating the gear apparatus via an associated lubricant compensating system
CN102861677A (zh) * 2012-09-21 2013-01-09 江苏亿鑫离心机制造有限公司 高强度耐磨耐蚀的螺旋卸料沉降离心机及其制造工艺

Also Published As

Publication number Publication date
ATE143833T1 (de) 1996-10-15
JPH0360751A (ja) 1991-03-15
CH680836A5 (fr) 1992-11-30
AU5894690A (en) 1991-01-24
EP0409791B1 (fr) 1996-10-09
US5037372A (en) 1991-08-06
AU632346B2 (en) 1992-12-24
BR9003589A (pt) 1991-08-27
DE59010529D1 (de) 1996-11-14
RU2038165C1 (ru) 1995-06-27

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