EP1056545A1 - Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages - Google Patents

Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages

Info

Publication number
EP1056545A1
EP1056545A1 EP99902523A EP99902523A EP1056545A1 EP 1056545 A1 EP1056545 A1 EP 1056545A1 EP 99902523 A EP99902523 A EP 99902523A EP 99902523 A EP99902523 A EP 99902523A EP 1056545 A1 EP1056545 A1 EP 1056545A1
Authority
EP
European Patent Office
Prior art keywords
drum
gear
bearing
gear train
stages
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.)
Granted
Application number
EP99902523A
Other languages
German (de)
English (en)
Other versions
EP1056545B1 (fr
EP1056545B2 (fr
Inventor
Hans-Joachim Beyer
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.)
GEA Mechanical Equipment GmbH
Original Assignee
Westfalia Separator GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7857905&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1056545(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
Publication of EP1056545A1 publication Critical patent/EP1056545A1/fr
Publication of EP1056545B1 publication Critical patent/EP1056545B1/fr
Application granted granted Critical
Publication of EP1056545B2 publication Critical patent/EP1056545B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • 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
    • B04B2001/2025—Driving control or mechanisms; Arrangement of transmission gearing with drive comprising a planetary gear

Definitions

  • the invention relates to a solid-bowl screw centrifuge with a drivable drum which is mounted on the two end faces and can be rotated about a horizontal axis, and a co-screw which is rotatably mounted coaxially therein and can be driven with a differential speed relative to the drum
  • the Drive has a multi-stage epicyclic gear, the housing shell is connected to the drum shell and the output shaft is connected to the screw conveyor.
  • the solid With the help of a differential speed between the drum and the screw, the solid is guided to the solid discharge at one end of the drum.
  • the housing of the multi-stage epicyclic gear rotates around the horizontal axis of rotation of the drum during operation. Since the gearbox is connected to the drum shell, these components have the same speed.
  • Solid-bowl screw centrifuges are known in which the planetary gear with the drum is arranged between the drum bearings or outside the drive-side drum bearing.
  • a screw centrifuge is known from US Pat. No. 5,403,260 in which the planetary gear is arranged outside the drum bearing. This is about it is a so-called "external gear".
  • the disadvantage is that both the hub of the housing of the epicyclic gear and the gear output shaft must be passed through the drive-side bearing of the drum. The resulting bearing size leads to problems at high speeds of the drum and the screw conveyor.
  • the natural frequency of the drum is one of the limiting variables for the maximum possible drum speed.
  • the internal gear reduces the maximum overall length of the drum by the gear width. Because of the high torques in large screw centrifuges, it may be necessary to design the epicyclic gear in several stages, which increases their width. On the other hand, the high torques also lead to such large diameters of the gearbox output shaft that an external gearbox is out of the question because of the disadvantageous bearing size associated therewith.
  • the invention has for its object to design a screw centrifuge of the type mentioned so that high peripheral speeds of the drum and large drum diameters are possible when using multi-stage planetary gears.
  • Drum bearing is provided between two stages of the multi-stage epicyclic gear.
  • the housing of the multi-stage epicyclic gear in the region of the gear-side drum bearing has a cylindrical intermediate piece with a reduced diameter compared to the housing parts of the gear stages.
  • the gear-side drum bearing receives the intermediate piece and a shaft connecting the gear stages. The diameter of the intermediate piece thus corresponds to the inside diameter of a suitable drum bearing.
  • At least the last gear stage with the greatest torque with the drum is arranged between the drum bearings, so that the transmission output shaft with the largest diameter does not have to be passed through the gear-side drum bearing and the gear width only partially affects the bearing spacing of the drum .
  • the other gear stages can be designed as external gear components.
  • the gear housing must be constructed in two parts so that the bearing can be mounted in the area of the intermediate piece.
  • FIG. 1 shows a schematic representation of a known screw centrifuge with an internal, multi-stage epicyclic gear
  • FIG. 2 shows a known screw centrifuge with an external, multi-stage planetary gear in a schematic representation
  • FIG. 3 shows an embodiment according to the invention in a schematic illustration
  • Figure 4 shows a known screw centrifuge, in contrast to the
  • the epicyclic gear is arranged at the end of the drum at which the liquid is discharged
  • 5 shows a known screw centrifuge, in which, in contrast to the embodiment according to FIG. 2, the epicyclic gear is provided at the end of the drum at which the liquid is dropped and
  • FIG. 6 shows an embodiment according to the invention with the planetary gear at the liquid end of the drum.
  • the solid-bowl screw centrifuges which are shown in FIGS. 1 to 6, have a drum 1 which is rotatably mounted about a horizontal axis 2.
  • a screw conveyor not shown, is arranged coaxially in the drum and is likewise rotatably mounted about the horizontal axis 2.
  • the screw conveyor is driven via an output shaft 3 of a multi-stage epicyclic gear 4, which is arranged in the solid bowl screw centrifuge according to FIG. 1 with the drum 1 between the bearings 5, 6.
  • the epicyclic gear 4 is provided outside the gear-side bearing 5.
  • FIGS. 3 and 6 Embodiments of the construction according to the invention are shown in FIGS. 3 and 6.
  • the gear-side drum bearing 5 is arranged between the stages 7 and 8 of the epicyclic gear 9.
  • the gear housing 10, which rotates during operation, is connected to the drum shell 1 1 and has a cylindrical intermediate piece 1 2 in the area of the gear-side drum bearing 5, the diameter of which is reduced compared to the housing parts of the gear stages 7 and 8.
  • the bearing 5 thus receives the intermediate piece 1 2 and a shaft 1 3 connecting the gear stages 7 and 8.
  • the intermediate piece 1 2 is divided transversely to the axis of rotation 2, specifically for reasons of assembly.
  • the drum shell 11 can have a diameter which is greater than 1,000 mm.
  • the ratio between the center distance L of the bearings 5 and 6 the drum 1 and the diameter D of the drum shell 1 1 (L / D) can be greater than 3.8.
  • the torque between the drum and the screw conveyor can be, for example, 1 00,000 Nm.
  • the peripheral speed at the inner radius of the drum shell 1 1 can be greater than 105 m / s.
  • the arrangement according to the invention of the gear-side drum bearing between two stages of a multi-stage epicyclic gear is particularly suitable for very large decanters.
  • the epicyclic gear can be provided with the arrangement of the drum bearing 5 between the gear stages on the solids-side or on the liquid-side drum end.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

La centrifugeuse à vis est réalisée en vue d'obtenir, par utilisation d'engrenage planétaire à plusieurs étages, des vitesses périphériques élevées du tambour et des grands diamètres de tambour. Le palier du tambour (5) est monté, côté entraînement, entre deux étages (7, 8) de l'engrenage planétaire à plusieurs étages. L'enveloppe du carter (10) de l'engrenage planétaire à plusieurs étages, qui est raccordée avec l'enveloppe du tambour (11) et qui, de ce fait, est entraînée à la même vitesse de rotation, présente une pièce intermédiaire (12) de faible diamètre, réceptionnée, conjointement avec un arbre (13) connectant les étages (7) et (8), dans le palier du tambour (5). La disposition, conformément à l'invention, du palier du tambour, côté entraînement, entre les deux étages de l'engrenage planétaire, est utilisée dans le cas de très grands décanteurs pour lesquels le tambour est entraîné à de grandes vitesses périphériques.
EP99902523A 1998-02-17 1999-01-07 Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages Expired - Lifetime EP1056545B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19806374 1998-02-17
DE19806374A DE19806374C1 (de) 1998-02-17 1998-02-17 Vollmantel-Schneckenzentrifuge mit mehrstufigem Umlaufgetriebe
PCT/EP1999/000055 WO1999042220A1 (fr) 1998-02-17 1999-01-07 Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages

Publications (3)

Publication Number Publication Date
EP1056545A1 true EP1056545A1 (fr) 2000-12-06
EP1056545B1 EP1056545B1 (fr) 2002-06-05
EP1056545B2 EP1056545B2 (fr) 2012-08-01

Family

ID=7857905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99902523A Expired - Lifetime EP1056545B2 (fr) 1998-02-17 1999-01-07 Centrifugeuse a vis a bol plein a engrenage planetaire a plusieurs etages

Country Status (7)

Country Link
US (1) US6387032B1 (fr)
EP (1) EP1056545B2 (fr)
JP (1) JP4212236B2 (fr)
DE (2) DE19806374C1 (fr)
DK (1) DK1056545T4 (fr)
NO (1) NO319825B1 (fr)
WO (1) WO1999042220A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2032264B2 (fr) † 2006-06-23 2019-06-26 GEA Mechanical Equipment GmbH Centrifugeuse à vis sans fin avec un dispositif d'entraînement

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3768908B2 (ja) 2001-03-27 2006-04-19 キヤノン株式会社 電子放出素子、電子源、画像形成装置
US6589154B2 (en) * 2001-05-30 2003-07-08 Alfa Laval Inc. Decanter centrifuge with a gear box mounted on the bowl
DK1479443T3 (da) * 2003-05-19 2006-03-27 Andritz Guinard S A S Drivsystem til en centrifugalseparator
DE102006028803A1 (de) * 2006-06-23 2007-12-27 Westfalia Separator Ag Schneckenzentrifuge
EP2525916B1 (fr) * 2010-09-13 2015-01-21 Hiller GmbH Dispositif d'entraînement dans une centrifugeuse à vis

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DE202812C (fr) *
US1572612A (en) * 1925-06-02 1926-02-09 Laughlin Filter Corp Centrifugal separator
US1655426A (en) * 1926-02-23 1928-01-10 Laughlin Filter Corp Centrifugal machine
US1710315A (en) * 1926-10-30 1929-04-23 Laughlin Filter Corp Centrifugal separator
US1882383A (en) * 1930-08-11 1932-10-11 Hallitt William Continuous discharge centrifugal machine
US1962461A (en) * 1933-04-10 1934-06-12 Eric G Piper Differential drive for centrifuges and scrapers
US2043661A (en) * 1934-08-10 1936-06-09 Andrew F Howe Centrifugal driving mechanism
US2458706A (en) * 1945-05-14 1949-01-11 Centrifugal & Mechanical Ind I Differential gearing for centrifugal machines
US2649816A (en) * 1949-03-31 1953-08-25 Knowles Associates Transmission and reaction torque device
GB776263A (en) * 1952-05-19 1957-06-05 Int Comb Ltd Improvements in or relating to centrifuging machines
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FR2070485A5 (en) * 1969-12-05 1971-09-10 Defontenay Paul Control system for centrifuge - to produce differential rotation
US3734399A (en) * 1971-05-28 1973-05-22 Beloit Corp Differential scroll drive
CH566817A5 (fr) * 1973-07-21 1975-09-30 Cyphelly Ivan J
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Title
See references of WO9942220A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2032264B2 (fr) † 2006-06-23 2019-06-26 GEA Mechanical Equipment GmbH Centrifugeuse à vis sans fin avec un dispositif d'entraînement

Also Published As

Publication number Publication date
EP1056545B1 (fr) 2002-06-05
DE59901620D1 (de) 2002-07-11
NO319825B1 (no) 2005-09-19
NO20004078D0 (no) 2000-08-15
DK1056545T3 (da) 2002-09-16
US6387032B1 (en) 2002-05-14
WO1999042220A1 (fr) 1999-08-26
JP4212236B2 (ja) 2009-01-21
NO20004078L (no) 2000-08-15
DK1056545T4 (da) 2012-10-29
EP1056545B2 (fr) 2012-08-01
DE19806374C1 (de) 1999-07-01
JP2002503549A (ja) 2002-02-05

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