EP0457004B1 - Sifting centrifuge - Google Patents

Sifting centrifuge Download PDF

Info

Publication number
EP0457004B1
EP0457004B1 EP91104865A EP91104865A EP0457004B1 EP 0457004 B1 EP0457004 B1 EP 0457004B1 EP 91104865 A EP91104865 A EP 91104865A EP 91104865 A EP91104865 A EP 91104865A EP 0457004 B1 EP0457004 B1 EP 0457004B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal drum
sugar
centrifuge
drum
centrifugal
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 - Lifetime
Application number
EP91104865A
Other languages
German (de)
French (fr)
Other versions
EP0457004A1 (en
Inventor
Volkmar Dipl.-Ing. Hentschel
Heinrich Ing.-Grad. Kurland
Helmut Schaper
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.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt 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 BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Publication of EP0457004A1 publication Critical patent/EP0457004A1/en
Application granted granted Critical
Publication of EP0457004B1 publication Critical patent/EP0457004B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B9/00Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/08Arrangement or disposition of transmission gearing ; Couplings; Brakes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B9/00Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/10Control of the drive; Speed regulating

Definitions

  • US-A-3,385,443 discloses a screen centrifuge, the centrifugal drum of which is formed by an inner and outer cone, which can be driven by a common drive motor via a V-belt drive each with independently adjustable speeds.

Landscapes

  • Centrifugal Separators (AREA)

Description

Die Erfindung betrifft eine kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge, mit zwei angetriebenen, um eine Vertikalachse drehbaren, mit Abstand übereinander in einem gemeinsamen Gehäuse angeordneten Schleudertrommeln, wobei dem Ausfallflansch der oberen Schleudertrommel eine Einrichtung zum Zuführen einer Einmaischflüssigkeit zugeordnet sowie eine stationäre, den abgeschleuderten Zucker auffangende Auffangeinrichtung nachgeschaltet sind, von der zumindest eine Abführleitung für die eingemaischte Zuckermasse in eine Beschleunigungseinrichtung der unteren Schleudertrommel führt.The invention relates to a continuously operating sieve centrifuge, in particular a sugar centrifuge, with two driven centrifugal drums, which can be rotated about a vertical axis and are arranged at a distance above one another in a common housing, with the outlet flange of the upper centrifugal drum being assigned a device for supplying a mashing liquid and a stationary, the centrifuged sugar catching collecting device are connected, from which at least one discharge line for the mashed sugar mass leads into an acceleration device of the lower centrifugal drum.

Eine derartige Ausführungsform läßt sich der DE-A1-36 22 959 entnehmen. Hier sind die beiden Schleudertrommeln über ein zentrales Distanzrohr miteinander verbunden und mit einer gemeinsamen angetriebenen Zentrifugenwelle gekuppelt. Am oberen Ende der Zentrifugenwelle befindet sich ein Pendellager mit darüber angeordnetem Antriebsmotor.Such an embodiment can be found in DE-A1-36 22 959. Here the two centrifugal drums are connected to each other via a central spacer tube and coupled to a common driven centrifuge shaft. At the upper end of the centrifuge shaft there is a self-aligning bearing with a drive motor arranged above it.

Von einer Füllvorrichtung wird eine Beschleunigereinrichtung innerhalb der oberen Schleudertrommel gefüllt. Die Füllmasse gelangt in den unteren Bereich des Trommelmantels und wandert über dessen Innenseite bis zum Ausfallflansch der oberen Schleudertrommel, wo der trockengeschleuderte Zucker ausgetragen wird. Eine Waschvorrichtung mit Düsen sprüht eine Waschflüssigkeit auf die wandernde Zuckerschicht, wodurch der Reinheitsgrad des Zuckers erhöht wird. Der abgeschleuderte Muttersirup gelangt in eine Auffangrinne und wird über eine Abführleitung abgeführt. Der abgeschleuderte Zucker wird über eine Vorrichtung im Bereich des Ausfallflansches mit einer Einmaischflüssigkeit, beispielsweise einem Sirup höherer Reinheit beaufschlagt und eingemaischt. Die so eingemaischte Zuckermasse gelangt dann über die genannte Abführleitung exzentrisch in die genannte Beschleunigungseinrichtung der unteren Schleudertrommel. Auch hier wandert die Zuckerschicht über die Innenseite des Trommelmantels und wird dabei mittels einer Waschvorrichtung gewaschen. Der ausgeschleuderte Zucker gelangt über einen Ausfallflansch der unteren Schleudertrommel in einen Ringraum, während der abgeschleuderte Sirup separat abgeführt wird. Der abgeschleuderte Zucker kann trocken ausgetragen werden und wird in diesem Falle von der Innenwand des Gehäuses aufgefangen und einem Zuckerausfallkanal zugeführt. Der aus der unteren Schleudertrommel ausgetragene Zucker kann aber auch eingemaischt werden.An accelerator device is filled by a filling device within the upper centrifugal drum. The filling compound reaches the lower area of the drum casing and travels over the inside of it to the flange of the upper centrifugal drum, where the dry spun sugar is discharged. A washing device with nozzles sprays a washing liquid onto the migrating sugar layer, which increases the degree of purity of the sugar. The centrifuged mother syrup enters a gutter and is discharged via a discharge line. The spun off sugar is subjected to a mashing liquid, for example a syrup of higher purity, and mashed in via a device in the area of the outlet flange. The mashed-in sugar mass then passes eccentrically via the discharge line into the acceleration device of the lower centrifugal drum. Here, too, the sugar layer migrates over the inside of the drum shell and is washed in the process using a washing device. The spun-off sugar reaches an annular space via a discharge flange of the lower centrifuge drum, while the spun-off syrup is discharged separately. The spun off sugar can be discharged dry and is collected in this case from the inner wall of the housing and fed to a sugar drop channel. The sugar discharged from the lower centrifugal drum can also be mashed in.

Die US-A-3,385,443 offenbart eine Siebzentrifuge, deren Schleudertrommel durch einen Innen- und Außenkonus gebildet wird, die über einen gemeinsamen Antriebsmotor über je einen Keilriementrieb mit unabhängig voneinander einstellbaren Drehzahlen antreibbar sind.US-A-3,385,443 discloses a screen centrifuge, the centrifugal drum of which is formed by an inner and outer cone, which can be driven by a common drive motor via a V-belt drive each with independently adjustable speeds.

Die FR-A-1.380.548 offenbart eine Siebzentrifuge mit nur einer einzigen angetriebenen Schleudertrommel, der eine Beschleunigungseinrichtung mit eigenem Antrieb vorgeschaltet ist.FR-A-1.380.548 discloses a screen centrifuge with only a single driven centrifugal drum, which is preceded by an acceleration device with its own drive.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs beschriebene Siebzentrifuge hinsichtlich ihrer Anpassungsmöglichkeiten zu verbessern.The invention has for its object to improve the sieve centrifuge described above in terms of its adaptation options.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die obere Schleudertrommel einen größeren Durchmesser aufweist als die untere Schleudertrommel,
und daß für die obere und untere Schleudertrommel je ein separater Antriebsmotor vorgesehen ist für unabhängig voneinander einstellbare Drehzahlen der beiden Schleudertrommeln, wobei an die der oberen Schleudertrommel zugeordnete Auffangeinrichtung zwei um 180° versetzt angeordnete Abführleitungen angeschlossen sind, die über einen gemeinsamen Auslaufstutzen zentrisch in der Beschleunigungseinrichtung der unteren Schleudertrommel münden.
This object is achieved in that the upper centrifugal drum has a larger diameter than the lower centrifugal drum,
and that a separate drive motor is provided for each of the upper and lower centrifugal drums for independently adjustable speeds of the two centrifugal drums, two discharge lines arranged at 180 ° to the collecting device assigned to the upper centrifugal drum and connected centrally via a common outlet connection in the acceleration device the lower centrifugal drum.

Dabei ist eine preiswerte Einrichtung zur Veränderung der jeweiligen Drehzahl gegeben bei Verwendung je eines Keilriemenantriebs mit auswechselbaren Keilriemenscheiben.An inexpensive device for changing the respective speed is provided when using a V-belt drive with interchangeable V-belt pulleys.

Die erfindungsgemäße Siebzentrifuge gibt die Möglichkeit, die Schleuderkraft jeder Schleudertrommel unabhängig von der der anderen zu ändern, um sie den verfahrenstechnischen Erfordernissen anzupassen. Indem die obere Schleudertrommel gegenüber der unteren Schleudertrommel einen größeren Durchmesser und damit eine größere Siebfläche erhält, wird der höheren Viskosität sowie der größeren Menge der in die obere Schleudertrommel eingeführten Füllmasse im Vergleich zu dem der unteren Schleudertrommel zugeführten Affinationsmagma Rechnung getragen. Dieser Effekt läßt sich noch steigern, wenn die obere Schleudertrommel mit einer höheren Umdrehungszahl angetrieben wird als die untere Schleudertrommel. Diese Optimierung der Verfahrensweise ist durch bloßes Auswechseln der Keilriemenscheiben und damit auch beim Betreiber selbst möglich.The screen centrifuge according to the invention enables the centrifugal force of each centrifugal drum to be changed independently of that of the other in order to adapt it to the requirements of the process. Because the upper centrifugal drum has a larger diameter than the lower centrifugal drum and thus a larger screen area, the higher viscosity and the larger amount of the filling material introduced into the upper centrifugal drum compared to the affection magma supplied to the lower centrifugal drum are taken into account. This effect can be increased if the upper centrifugal drum is driven at a higher number of revolutions than the lower centrifugal drum. This procedure can be optimized simply by replacing the V-belt pulleys and thus also by the operator himself.

In der Zeichnung ist eine als Beispiel dienende Ausführungsform schematisch im Vertikalschnitt dargestellt.In the drawing, an exemplary embodiment is shown schematically in vertical section.

Die dargestellte Zuckerzentrifuge umfaßt zwei mit Abstand übereinander angeordnete Schleudertrommeln 1,2, die in einem gemeinsamen Gehäuse 3 angeordnet und um eine gemeinsame Vertikalachse 4 drehbar sind.The sugar centrifuge shown comprises two centrifugal drums 1, 2 spaced one above the other, which are arranged in a common housing 3 and can be rotated about a common vertical axis 4.

Dem Ausfallflansch 5 der oberen Schleudertrommel 1 ist eine Einrichtung 6 zum Zuführen einer Einmaischflüssigkeit zugeordnet. Außerdem ist dem Ausfallflansch 5 eine stationäre, den abgeschleuderten Zucker auffangende Auffangeinrichtung 7 in Form eines Einmaischkonus nachgeschaltet. Von dieser Auffangeinrichtung 7 führen zwei um 180° versetzt angeordnete Abführleitungen 8 über einen gemeinsamen Auslaufstutzen 8a zentrisch in eine Beschleunigungseinrichtung 9 der unteren Schleudertrommel 2.The outlet flange 5 of the upper centrifugal drum 1 is assigned a device 6 for supplying a mashing liquid. In addition, the outlet flange 5 is followed by a stationary collecting device 7 in the form of a mashing cone which collects the spun off sugar. From this collecting device 7, two discharge lines 8 arranged offset by 180 ° lead centrally via a common outlet connection 8a into an acceleration device 9 of the lower centrifugal drum 2.

Der oberen Schleudertrommel 1 ist ein oberer Antriebsmotor 10 und der unteren Schleudertrommel 2 ein unterer Antriebsmotor 11 zugeordnet. Die Drehübertragung erfolgt jeweils über einen Keilriemenantrieb 12 und austauschbaren Keilriemenscheiben 13,14.The upper centrifugal drum 1 is assigned an upper drive motor 10 and the lower centrifugal drum 2 a lower drive motor 11. The rotation is transmitted via a V-belt drive 12 and interchangeable V-belt pulleys 13, 14.

Die obere Schleudertrommel 1 ist in einem oberen Pendellager 15, die untere Schleudertrommel 2 in einem unteren Stehlager 16 gelagert.The upper centrifugal drum 1 is mounted in an upper self-aligning bearing 15, the lower centrifugal drum 2 in a lower pillow block 16.

Claims (2)

  1. Continually operating sifting centrifuge, in particular a sugar centrifuge, comprising two driven centrifugal drums (1,2) rotatable about a vertical axis (4) and arranged with clearance one above the other in a common housing (3), whereby the fall-out flange (5) of the upper centrifugal drum (1) is associated with a facility (6) for feeding a mingling liquid and has a stationary catchment facility (7) arranged downstream of it for catching the spun-off sugar, from which catchment facility at least one discharge line (8) for the mingled sugar mass leads into an accelerator (9) of the lower centrifugal drum (2), characterised in that the diameter of the upper centrifugal drum (1) is larger than that of the lower centrifugal drum (2),
    and in that a separate drive motor (10,11) is provided for both the upper and the lower centrifugal drum (1, 2) in order to be able to set the revolutions of the two centrifugal drums (1, 2) independently of each other, whereby the catchment facility (7) associated with the upper centrifugal drum (1) has two discharge lines (8) offset from each other by 180° attached to it, which open centrally into the accelerator (9) of the lower centrifugal drum (2) via a common discharge pipe (8a).
  2. Sifting centrifuge according to claim 1, characterised by a V-belt drive (12) each with exchangeable V-belt pulleys (13, 14).
EP91104865A 1990-04-28 1991-03-27 Sifting centrifuge Expired - Lifetime EP0457004B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9004952U 1990-04-28
DE9004952U DE9004952U1 (en) 1990-04-28 1990-04-28 Sieve centrifuge

Publications (2)

Publication Number Publication Date
EP0457004A1 EP0457004A1 (en) 1991-11-21
EP0457004B1 true EP0457004B1 (en) 1994-08-31

Family

ID=6853406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104865A Expired - Lifetime EP0457004B1 (en) 1990-04-28 1991-03-27 Sifting centrifuge

Country Status (3)

Country Link
EP (1) EP0457004B1 (en)
DE (2) DE9004952U1 (en)
ES (1) ES2060227T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425063C2 (en) 1994-07-15 1999-05-06 Braunschweigische Masch Bau Continuously operating centrifuge for centrifuging sugar filling masses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653051A (en) * 1963-09-26
US3385443A (en) * 1967-08-14 1968-05-28 Cuza Cerso Roberto Continuously operating centrifugal device
DE3415519A1 (en) * 1984-04-26 1985-10-31 Fried. Krupp Gmbh, 4300 Essen Continuously operating screen-type centrifuge
DE3615224C3 (en) * 1986-05-06 1993-12-02 Selwig & Lange Gmbh Continuously operating sugar centrifuge

Also Published As

Publication number Publication date
ES2060227T3 (en) 1994-11-16
EP0457004A1 (en) 1991-11-21
DE59102691D1 (en) 1994-10-06
DE9004952U1 (en) 1991-08-22

Similar Documents

Publication Publication Date Title
DE2930581A1 (en) CENTRIFUGE FOR SORTING AND SEPARATING SOLIDS
DE69704963T2 (en) Horizontal centrifuge for optimal oil extraction
DE69522587T2 (en) METHOD FOR TREATING A PAPER CELL AND DEVICE THEREFOR
DE3415519C2 (en)
EP0457004B1 (en) Sifting centrifuge
EP1280606A1 (en) Solid bowl centrifuge for separating mixtures of liquids and solids
DE2834491C2 (en) Sieve centrifuge with curved sieve pockets
DE2936659C2 (en)
DE3615224C2 (en)
DE19835555B4 (en) Method and device for wet grinding and dispersing of solid particles in liquids
EP0252341B1 (en) Continuously operating sifting centrifuge with an overhead drive
EP0163112B1 (en) Method and device for the centrifugal separation of fine-grained mineral mixtures
DE1228226B (en) Device for separating the solid from the liquid components of suspensions
DE2419355A1 (en) CENTRIFUGE
DE2246155A1 (en) CENTRIFUGE WITH CONTINUOUS EMPTYING FOR FILTERING MATERIALS OF ANY TYPE, IN PARTICULAR FIBERS
DE19616040C2 (en) Filtrate discharge for a solid bowl centrifuge
WO1993013865A1 (en) Solid bowl worm centrifuge
EP0455964B1 (en) Centrifuge
EP0421200A2 (en) Method and apparatus for centrifuging high-viscosity material
DE2930312A1 (en) Screen-type centrifuge with washing fluid supply - at reduced speed providing thicker and less damaging film
DE4010926A1 (en) Mill using grinder bodies - has rotary centrifuging funnel widening in discharge direction of bodies
DE10331732A1 (en) centrifuge
DE951140C (en) Sieve centrifuge for removing liquids from thick matter
DE3828204C2 (en)
EP0692311B1 (en) Continuously operating centrifugal strainer for sugar massecuites

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910829

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT SE

17Q First examination report despatched

Effective date: 19930122

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940831

REF Corresponds to:

Ref document number: 59102691

Country of ref document: DE

Date of ref document: 19941006

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2060227

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
ET Fr: translation filed
EAL Se: european patent in force in sweden

Ref document number: 91104865.0

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970206

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970310

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970314

Year of fee payment: 7

Ref country code: FR

Payment date: 19970314

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970319

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980328

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19980328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981201

EUG Se: european patent has lapsed

Ref document number: 91104865.0

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050327