WO2011026472A2 - Centrifugeuse - Google Patents

Centrifugeuse Download PDF

Info

Publication number
WO2011026472A2
WO2011026472A2 PCT/DE2010/001031 DE2010001031W WO2011026472A2 WO 2011026472 A2 WO2011026472 A2 WO 2011026472A2 DE 2010001031 W DE2010001031 W DE 2010001031W WO 2011026472 A2 WO2011026472 A2 WO 2011026472A2
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
centrifuge
housing
drum
bearing
Prior art date
Application number
PCT/DE2010/001031
Other languages
German (de)
English (en)
Other versions
WO2011026472A3 (fr
Inventor
Guntram Krettek
Original Assignee
Guntram Krettek
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 Guntram Krettek filed Critical Guntram Krettek
Priority to EP10784946.5A priority Critical patent/EP2473287B1/fr
Publication of WO2011026472A2 publication Critical patent/WO2011026472A2/fr
Publication of WO2011026472A3 publication Critical patent/WO2011026472A3/fr

Links

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
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids

Definitions

  • the present invention relates to a centrifugally arranged centrifuge drum with a fixed outer housing, a pivotable on the upper side of the outer housing and arranged pivotally mounted shaft bearing rotatably mounted and extending into the outer housing shaft, carried by the shaft with a centrifuge drum Inlet and outlet, a shaft drive arranged outside the outer housing and a device for removing the solids cake accumulated on the drum inner wall.
  • centrifuges are known. They have the advantage that they can be operated at very high speeds, by oscillating storage of the centrifuge drum high forces acting on the bearing can be avoided and critical vibrations can be prevented.
  • the shaft carrying the centrifuge drum extends from above into the fixed outer housing of the centrifuge and is driven by a drive disposed outside the outer housing.
  • the flexible arrangement of the shaft bearing for example achieved in that the shaft bearing has a spherical cap, which is mounted in a corresponding bearing cup of the outer housing and thus enables appropriate pivoting or oscillating movements of the centrifuge drum with shaft light.
  • a corresponding removal device In order to remove the solid cake accumulated on the inside wall of the drum after centrifuging, a corresponding removal device is used, which may be, for example, a mechanically acting device which has corresponding scraper or knife devices for removing the cake.
  • Such a removal device has hitherto generally been arranged on the fixed outer housing in order to ensure stable storage.
  • this type of storage has the disadvantage that when the shaft with centrifuge drum during removal of the solid cake occupies a pivoted relative to the centrifuge axis storage, when the shaft rotates, for example, during the removal of the solids cake at low speeds, no more parallelism between the shaft Centrifuge drum and the removal device is given, so that there is a risk that the removal device in some places cuts too deeply into the solids cake, which can lead to damage, and in some places does not penetrate deeply enough into the cake, so that remain solid cake residues.
  • centrifuge which has the features of the preamble of claim 1.
  • this known centrifuge avoids the above-described problems of misalignment between the shaft and removal device when removing the solids cake in that the shaft is locked with centrifuge drum during removal of the solid cake, so that there is a parallel position between shaft and removal device.
  • Such elimination of the pendulum power of the shaft is considered harmless at low speeds used in the removal of the solids cake.
  • a piston is used, which is lowered in the center of the centrifuge drum and engages around a hub arranged at the upper end of the drum and thereby secures the shaft and drum against radial movements or fixes them axially.
  • the removal device is attached to the housing of the centrifuge.
  • the present invention has for its object to provide a high-speed operable centrifuge of the type reproduced above, which is characterized in a simple structure by a high gas / liquid tightness and allows a particularly efficient and rapid removal of the solids cake.
  • This object is achieved in a centrifuge of the specified type in that at the shaft bearing together with this pivotable a gas-tight surrounding the drum inner housing is arranged and that the removal device on the bearing or on the inner housing is pivotable together with these.
  • the invention takes a different route than the described prior art. While in the prior art, the removal device is mounted on the outer housing of the centrifuge, ie depending on the shaft and the centrifuge drum, the invention provides an attachment of the removal device on the shaft bearing or on a drum surrounding the drum inner housing. This ensures that the removal device always participates in the movements of the shaft with the centrifuge drum and maintains their parallelism to the shaft in each state, ie no relative movement occurs between shaft with drum and removal device. This ensures that in each state, ie even at increased speeds of the centrifuge drum, a proper removal of the solid cake can take place without damaging the inner wall of the drum or causing complete removal of the solid cake.
  • the removal device according to the invention is mounted either on the shaft bearing itself or on the invention additionally provided inner housing. These parts carry out the swiveling or oscillating movement of the shaft and drum.
  • the additionally inventively provided inner housing which surrounds the drum in a gastight manner, prevents the escape of liquids or (harmful) gases from the drum and is in addition to the bearing seal on the outer housing another barrier to the escape of undesirable substances, the inner housing can thus be referred to as "catching enclosure.” It follows forcibly the pendulum motion of the rotor.
  • the inner housing is preferably formed slightly. It is understood that it must have a corresponding strength when the removal device is attached to the inner housing. If the fastening device is mounted on the shaft bearing, the inner housing may have a lower strength.
  • the inner housing is at least partially designed as a rigid housing.
  • the cover of the housing is rigidly designed to attach to the removal device, while the remaining part of the housing is flexible.
  • the inner housing as a flexible housing (at least partially), in particular as a bellows, is formed.
  • the removal device can be fastened in particular on the upper side or also on the underside of the housing. When attached to the bottom of the housing bottom is designed to be rigid.
  • the removal device may be a mechanical removal device with a scraper / knife advance. acting direction.
  • the removal device can also be designed as a redispersing device, by means of which a redispersing fluid is introduced into the centrifuge drum in order to detach the solid cake formed from the drum inner wall and to lead it out of the centrifuge, and to have a redispersing fluid feed tube.
  • a redispersing fluid is introduced into the centrifuge drum in order to detach the solid cake formed from the drum inner wall and to lead it out of the centrifuge, and to have a redispersing fluid feed tube.
  • Corresponding embodiments are known and need not be explained in detail at this point. It is essential that according to the invention substantially parallelism between shaft and removal device, ie. the feed tube or the carrier element for the scraper / knife device, is maintained.
  • the flexible shaft bearing preferably has a spherical cap, which is mounted in a correspondingly designed bearing cup of the outer housing.
  • the shaft bearing preferably has a rolling bearing or a magnetic bearing for the shaft receiving bushing, which is pivotally mounted on the upper side of the outer housing, preferably by means of the above-described spherical cap and spherical bearing cup.
  • the inner housing is lowerable or raisable relative to the centrifuge drum.
  • the inner housing in particular on a removable top or bottom.
  • the sinkability or liftability of the inner housing can be achieved via a suitable power-operated drive device, for example a corresponding linear drive.
  • the purpose of this arrangement is to get to the centrifuge drum by removing the inner housing, for example for maintenance or cleaning purposes.
  • the top (cover) of the inner housing is removed and the inner housing is lowered by means of the drive means.
  • the drum is then freely accessible for the purposes stated above.
  • the inner housing is raised again and connected to its top.
  • the outer housing can be made arbitrarily large in relation to the inner housing.
  • the outer housing of the centrifuge is designed as a walk-in space, which has the advantage that the corresponding parts for assembly / maintenance / cleaning purposes, etc. are easily accessible.
  • Figure 1 is a partial vertical section through a first
  • Embodiment of a centrifuge with suspended centrifuge drum Embodiment of a centrifuge with suspended centrifuge drum
  • Figure 2 is a partial vertical section corresponding to FIG
  • the centrifuge with suspended centrifuge drum which is shown partially in vertical section in FIG. 1, has an outer housing 1, which can be made of concrete, steel, etc., and encloses a large space in which an inner housing 2 is arranged which encloses a centrifuge drum 3.
  • the centrifuge drum 3 is approximately cylindrical and is fixedly connected to a shaft 4 via a hub.
  • the shaft 4 is rotatably mounted on the outer housing 1 via a bearing schematically shown at 5 and extends into the outer housing 1 and the inner housing 2 inside. It is driven in rotation by a drive 12 (electric motor) arranged outside the outer housing.
  • the shaft bearing 5 is covered by a cover 13 on the outer ' side of the housing and has a bearing bush 7, which widens upwards and there has a kugelkalot- tenförmigen section 6.
  • This section is in a correspondingly spherical socket on firmly attached to the outer housing 1 mounted part of the shaft bearing 5 flexibly. Due to the spherical bearing of the shaft 4, this can perform radial movements, which lead to a pivoting of the shaft within the socket of the outer housing 1.
  • bearing bush Within the bearing bush are two rolling bearings (not shown), with which a shaft 4 surrounding bearing sleeve 16 is rotatably mounted within the bearing bush 7.
  • the shaft 4 is therefore both rotatable and
  • the inner housing 2 shown here is designed as a "catch housing” and prevents it from escaping from liquids or gases from the centrifuge drum 3.
  • the inner housing 2 has a removable cover 14 and is otherwise very lightly formed the bearing bush 7, attached and is therefore together with the
  • the attachment of the inner housing 2 on the shaft bearing is liquid-tight and gas-tight.
  • a removal device 9 which is fixed to the cover 14 of the inner housing.
  • This removal device 9 has an arm 10 that extends parallel to the shaft 4 and that has a multiplicity of scrapers or knives 11 carries, with which the solid cake is removed.
  • the arm 10 runs parallel to the shaft 4 or drum 3. Because the removal device 9 is fastened to the cover 14 of the inner housing 2 and the inner housing 2 is fastened to the shaft bearing 5, the removal device 9 makes all the oscillating movements of the shaft 4, so that the distance between shaft 4 and arm or
  • Drum inner wall and arm 10 always remains constant, even if the shaft 4 assumes a skewed position relative to the outer housing 1.
  • FIG. 2 shows a further embodiment of such a centrifuge in the partial vertical section.
  • the centrifuge has an outer housing 1, which also surrounds a relatively large space in which a surrounding a centrifuge drum 3 inner housing 2 is arranged.
  • the inner housing 2 is provided with a lid 14 which is fixed to the bearing housing 5, and indeed on a bearing bush 7 of the bearing housing.
  • the shaft bearing 5 is mounted in an opening of the outer housing 1 in a sealed manner and also has a spherical cap portion 6, with which the bearing pivotally or flexibly in a corresponding spherical bearing cup of the firmly attached to the outer housing 1 part of the shaft bearing fifth is stored.
  • the bearing bush 7 can thus Execute pivoting movements relative to the outer housing 1, wherein the inner housing 2 moves.
  • a suitable shaft drive 12 in the form of an electric motor is arranged outside of the outer housing 1.
  • a cover 13 serves to cover the shaft bearing 5.
  • one or more rolling bearings are arranged, which support the shaft 4 rotatably within the bearing bush 7. The shaft 4 can thus perform a rotational movement and a pivoting or pendulum motion.
  • a removal device 9 for removing the solids cake is fastened to the cover 14 of the inner housing 2 or to the bearing bush 7.
  • the removal device 9 has an arm 10 which extends through the cover of the inner housing 2 and carries corresponding knives 11 for removing the solids cake.
  • an outlet 15 is arranged at the lower end of the inner housing.
  • the inner housing has a sight glass 17, with which an observation of the centrifuge drum 3 is possible.
  • a drive 16 is shown in Figure 2, which is mounted on the inside of the outer housing 1 and with which the inner housing 2 is lowered after removal of the lid 4 in order to inspect the centrifuge drum 3 and to wait.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne une centrifugeuse comprenant un tambour suspendu. La centrifugeuse comprend un boîtier externe fixe, un palier d'arbre disposé flexible ou pivotant sur la face supérieure du boîtier externe, un arbre monté rotatif, entraîné en rotation par le palier d'arbre et s'étendant dans le boîtier externe, et enfin un tambour porté par l'arbre. Un boîtier interne qui entoure le tambour de manière étanche au gaz, est monté sur le palier d'arbre en tournant conjointement avec de dernier. Le dispositif pour enlever le gâteau de matière sèche disposé sur la paroi du tambour, est fixé solidaire en rotation sur le palier d'arbre ou sur le boîtier interne. Il est ainsi garantit que le gâteau de matière sèche puisse être retiré entièrement sans endommager la paroi interne du tambour.
PCT/DE2010/001031 2009-09-02 2010-08-31 Centrifugeuse WO2011026472A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10784946.5A EP2473287B1 (fr) 2009-09-02 2010-08-31 Centrifugeuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009039729.9 2009-09-02
DE200910039729 DE102009039729A1 (de) 2009-09-02 2009-09-02 Zentrifuge

Publications (2)

Publication Number Publication Date
WO2011026472A2 true WO2011026472A2 (fr) 2011-03-10
WO2011026472A3 WO2011026472A3 (fr) 2011-04-28

Family

ID=43500054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2010/001031 WO2011026472A2 (fr) 2009-09-02 2010-08-31 Centrifugeuse

Country Status (3)

Country Link
EP (1) EP2473287B1 (fr)
DE (1) DE102009039729A1 (fr)
WO (1) WO2011026472A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2667380C (fr) * 2006-10-23 2015-03-31 Steven A. Mcalister Concentrateur centrifuge
DE102011119265B4 (de) 2011-11-24 2018-01-04 Bma Braunschweigische Maschinenbauanstalt Ag Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes
DE102017128027A1 (de) * 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh Separator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425698A (en) 1991-12-04 1995-06-20 Carr Engineering Associates, Inc. Centrifugal separator with flexibly suspended restrainable bowl

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064883B (de) * 1957-02-08 1959-09-03 Raffineries & Sucreries Say So Pendelzentrifuge
DE1904774B2 (de) * 1969-01-31 1971-12-23 Braunschweigische Maschinenbauanstalt, 3300 Braunschweig Zentrifuge insbesondere fuer die zuckergewinnung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425698A (en) 1991-12-04 1995-06-20 Carr Engineering Associates, Inc. Centrifugal separator with flexibly suspended restrainable bowl

Also Published As

Publication number Publication date
EP2473287A2 (fr) 2012-07-11
EP2473287B1 (fr) 2013-07-31
WO2011026472A3 (fr) 2011-04-28
DE102009039729A1 (de) 2011-03-03

Similar Documents

Publication Publication Date Title
DE102017113583A1 (de) Zentrifuge
EP2473287B1 (fr) Centrifugeuse
EP0535427A2 (fr) Centrifugeuse filtrante à marche discontinue
DE2302601C3 (de) Vorrichtung zum Auflösen von Faserstoffen
EP1849524B1 (fr) Agencement d'étanchéité pour une centrifugeuse
DE19518580A1 (de) Lötbadtiegel
EP1772176B1 (fr) Dispositif pour la séparation de solides des liquides
DE3343938A1 (de) Lagerabdichtung fuer eine zentrifuge
CH688988A5 (de) Filterzentrifuge.
DE2924794C2 (de) Vorrichtung zur Entwässerung einer Faserstoffsuspension
DE3819532A1 (de) Entwaesserungszentrifuge
EP1849525B1 (fr) Agencement de palier pour une centrifugeuse
DE69014621T2 (de) Kontinuierlich arbeitende filterzentrifuge.
DE3244090A1 (de) Geraet zum foerdern von fluessigkeiten und zum abscheiden von in den fluessigkeiten enthaltenen gasen
DE3430508C2 (fr)
DE102004030207B4 (de) Vorrichtung zum kontinuierlichen Schmelztauchbeschichten eines Metallstranges
DE8905963U1 (de) Vorrichtung zum Entfernen von Rechen- und/oder Siebgut aus einem Gerinne strömender Flüssigkeit
DE2246155A1 (de) Zentrifuge mit kontinuierlicher entleerung zum filtrieren von materialien beliebiger art, insbesondere von faserstoffen
DE3610229A1 (de) Mehrstufige schubzentrifuge
DE10322807B4 (de) Vorrichtung zur Bearbeitung von Kleinteilen
DE19719069C1 (de) Zentrifuge
DE2806682A1 (de) Antriebseinrichtung fuer den rotor einer loesungsmittel-extraktionsvorrichtung
DE2236775A1 (de) Dauerfilter
DE2544788A1 (de) Zentrifuge mit bodenentleerung
DE19618048C2 (de) Vakuum-Trommelfilter

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10784946

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010784946

Country of ref document: EP