EP0487780A1 - Centrifugeuse travaillant en continu pour la centrifugation de masses cuites - Google Patents

Centrifugeuse travaillant en continu pour la centrifugation de masses cuites Download PDF

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Publication number
EP0487780A1
EP0487780A1 EP90122964A EP90122964A EP0487780A1 EP 0487780 A1 EP0487780 A1 EP 0487780A1 EP 90122964 A EP90122964 A EP 90122964A EP 90122964 A EP90122964 A EP 90122964A EP 0487780 A1 EP0487780 A1 EP 0487780A1
Authority
EP
European Patent Office
Prior art keywords
product distributor
distributor
bell
centrifuge
product
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
EP90122964A
Other languages
German (de)
English (en)
Other versions
EP0487780B1 (fr
Inventor
Helmut Schaper
Heinrich Kurland
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8204774&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0487780(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Priority to DE90122964T priority Critical patent/DE59005216D1/de
Priority to EP90122964A priority patent/EP0487780B1/fr
Priority to US07/800,856 priority patent/US5244502A/en
Priority to BR919105194A priority patent/BR9105194A/pt
Priority to ZA919428A priority patent/ZA919428B/xx
Priority to JP3316910A priority patent/JPH0763654B2/ja
Priority to AU88363/91A priority patent/AU640835B2/en
Publication of EP0487780A1 publication Critical patent/EP0487780A1/fr
Publication of EP0487780B1 publication Critical patent/EP0487780B1/fr
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
    • C13B30/04—Separating crystals from mother liquor
    • C13B30/06—Separating crystals from mother liquor by centrifugal force

Definitions

  • the invention relates to a continuously operating centrifuge for centrifuging sugar filling masses with a sieve basket which is flared upwards and which rotates about a vertical axis, a product distributor which is flared downwards and which extends into the bottom region of the sieve basket and which is essentially coaxial to the sieve basket, below forms a discharge edge and rotates about the same vertical axis as the strainer basket, and a distribution pot provided inside and in the upper area of the product distributor as a feed device for the sugar filling masses in the axis area of the centrifuge.
  • centrifuges are known for example from DE 22 07 663 C3 or DE 38 28 204 C2.
  • the sugar filling mass is first placed in the distribution pot as a feed device. This is located in the axis area of the centrifuge and should ensure that the sugar filling mass is distributed as evenly as possible for further processing in the centrifuge.
  • the filling compound is carried along in the distribution pot by adhesion to its wall and gradually accelerated to the peripheral speed of the wall.
  • the filling mass is distributed over the circumference of the distribution pot and is thrown off over the upper edge of the distribution pot if the filling mass continues to flow.
  • the filling compound hits the inside surface of the product distributor, which is also known as the acceleration bell or pre-spinning drum can be.
  • the filler can be supplied with steam or deck water from the appropriate feed lines.
  • the well-known product distributors themselves are drum-like and expand slightly conically downwards. They form a discharge rim at the bottom, from which the sugar filling masses reaching there are thrown outwards into the actual sieve basket, which is flared upwards and rotates about the same vertical axis.
  • a constant problem is that the filling compound supplied to the distributor pot is distributed unevenly with increasing viscosity and forms a layer of different thickness on the inner surface of the product distributor.
  • upstanding distributor rods are arranged in order to first mechanically divide the filler mass strand before the filler mass reaches the inner surface of the distributor pot, strip-shaped inhomogeneities of the filler mass arise which continue through the product distributor to the sieve surface of the drum.
  • the object of the invention is to further improve the uniformity of the distribution of the sugar filling masses in the continuously operating centrifuges.
  • peripheral wall of the product distributor has a plurality of ring elements which overlap in the axial direction while leaving an annular gap, and in that the product distributor is surrounded by a stationary bell which surrounds it with play on all sides and is flared downwards.
  • the effectiveness of the product distributor of continuously operating centrifuges is significantly improved by the invention.
  • the sugar filling masses coming from the distribution pot onto the inner wall of the product distributor are already pushed down by the centrifugal force due to the conical expansion.
  • a further homogenization is now achieved by the cracks that form at the ring gaps between two ring elements.
  • the sugar filling masses are circulated at these points, because the particles closest to the inner wall glide over the latter due to the greater adhesion of the particles lying on the wall of the product distributor until they reach the inner wall of the next ring element.
  • An additional equalization of the layer thickness on the inner wall of the product distributor thus occurs automatically.
  • a steam supply is provided in the area of play between the product distributor and the bell, which supplies steam to the interior of the product distributor via the annular gaps.
  • the steam reaches the interior of the product distributor precisely at the transitions of the rotating cone between the ring elements. To do this, it flows through the particles of sugar filling material that are flung from one ring element to the next and reaches them at the moment when they offer an optimal surface for contact with steam or its condensate and water and immediately afterwards homogenizing and mixing a kneading movement when it hits be exposed to the next ring element.
  • An additional advantage is that the steam flows passing the ring elements on the outside cause further heating of these ring elements, ie the cone wall. This heat is immediately passed on to the filling compound flowing out on the inner wall of the product distributor, which further promotes homogenization and mixing.
  • the bell surrounding the product distributor can and should be stationary. Otherwise, the resulting pressure conditions could result in an air flow from the inside of the product distributor through the annular gaps to the outside, which is not desirable.
  • the steam supply is much more effective and uniform and also less expensive than separate heating of the product distributor, as is proposed for example in GB-PS 1 074 229.
  • the stationary bell which is flared at the bottom, projects downwards over the product distributor and forms an impact surface.
  • the sugar filling masses can then fall down into the rotating sieve basket of the centrifuge, from where they start their way up to the upper edge in the course of further processing.
  • the centrifuge shown has a stationary frame 10 with a base 11, side walls 12, a cover 13 above the actual strainer basket 20 and a filling funnel 14.
  • the sugar filling mass falls into the distribution pot 30 through the filling funnel 14 and a likewise fixed shaft 15.
  • the screen basket 20, the distributor pot 30 and a product distributor 40 rotate about a common vertical axis 16.
  • the distributor pot 30 is drum-shaped with a closed bottom 31 and cylindrical walls 32.
  • the product distributor 40 has 3 ring elements 41, 42, 43, each of which extends conically downwards, but is otherwise cylinder-symmetrical.
  • An annular gap 44 or 45 is formed between the ring elements 41 and 42 or the ring elements 42 and 43.
  • the ring elements 41, 42, 43 can be fastened to one another by means of individual webs.
  • the uppermost ring element 41 is closed at the top, but allows the shaft 15 to pass into the distribution pot 30 in the region near the axis for filling the sugar filling masses.
  • the fastening of the rods 34 is also arranged.
  • the ring elements 41, 42, 43 of the product distributor 40 are surrounded with a play on all sides by a stationary bell 50 which is flared downwards.
  • This bell 50 is fastened to the cover 13 by means of a holding device 51.
  • the bell 50 is cylindrically symmetrical to the axis 16, so that the play between the bell 50 and the ring elements of the product distributor 40 is cylindrically symmetrical.
  • a steam supply 52 leads into the game, with which steam (not shown) can enter the area between the product distributor 40 and the bell 50 from the outside. This steam then passes through the ring gaps 44, 45 into the interior of the ring elements 41, 42, 43 and in the process flows through the sugar filling compounds located there.
  • the sugar filling masses each pass from one ring element 41, 42, 43 to the next lower one, the previous one conically surrounding it.
  • the sugar filling masses are thrown outwards from the discharge edge of the lowermost ring element 43, where they meet an impact surface 21 of the sieve basket 20. From there they reach a sieve firmly connected to the basket base and this baffle surface 21 and move upwards on the sieve due to the centrifugal force.
  • a mashing device can be provided in the area of the impact surface 21.
  • the sieve basket 20 is closed at the top by a relatively solid rim 22, from which the sugar particles are thrown outwards, collected there and further processed (not shown).
  • the embodiment from FIG. 2 differs from the embodiment from FIG. 1 in that the stationary bell 50 extends further downward than the lower edge of the lowermost ring element 43 of the product distributor 40.
  • the bell 50 is there with a relatively solid rim equipped, which forms a baffle 53.
  • the sugar filling compound particles reaching the discharge edge of the lowermost ring element 43 of the product distributor 40 are thrown off from there and now hit the impact surface 53, not the impact surface 21 from FIG. 1. This leads to a braking of the tangentially flung particles and to one further mixing.
  • the particles fall down from the impact surface 53 onto the basket base 23 of the sieve basket 20, but then migrate lengthwise, as in the exemplary embodiment in FIG. 1 of the screen basket 20 in turn upwards to the edge 22.
  • the baffle surface 53 is of identical design all round.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Centrifugal Separators (AREA)
EP90122964A 1990-11-30 1990-11-30 Centrifugeuse travaillant en continu pour la centrifugation de masses cuites Expired - Lifetime EP0487780B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE90122964T DE59005216D1 (de) 1990-11-30 1990-11-30 Kontinuierlich arbeitende Zentrifuge zum Abschleudern von Zuckerfüllmassen.
EP90122964A EP0487780B1 (fr) 1990-11-30 1990-11-30 Centrifugeuse travaillant en continu pour la centrifugation de masses cuites
US07/800,856 US5244502A (en) 1990-11-30 1991-11-26 Continuously operating centrifuge
ZA919428A ZA919428B (en) 1990-11-30 1991-11-29 A continuously working centrifuge for spinning off sugar massecuites
BR919105194A BR9105194A (pt) 1990-11-30 1991-11-29 Centrifuga de operacao continua para rotacao de massecuites de acucar
JP3316910A JPH0763654B2 (ja) 1990-11-30 1991-11-29 白下を遠心分離するための連続作動型遠心分離機
AU88363/91A AU640835B2 (en) 1990-11-30 1991-12-02 Centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90122964A EP0487780B1 (fr) 1990-11-30 1990-11-30 Centrifugeuse travaillant en continu pour la centrifugation de masses cuites

Publications (2)

Publication Number Publication Date
EP0487780A1 true EP0487780A1 (fr) 1992-06-03
EP0487780B1 EP0487780B1 (fr) 1994-03-30

Family

ID=8204774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122964A Expired - Lifetime EP0487780B1 (fr) 1990-11-30 1990-11-30 Centrifugeuse travaillant en continu pour la centrifugation de masses cuites

Country Status (7)

Country Link
US (1) US5244502A (fr)
EP (1) EP0487780B1 (fr)
JP (1) JPH0763654B2 (fr)
AU (1) AU640835B2 (fr)
BR (1) BR9105194A (fr)
DE (1) DE59005216D1 (fr)
ZA (1) ZA919428B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809863A1 (de) * 1998-03-07 1999-09-09 Dorr Oliver Deutschland Kontinuierlich arbeitende Zentrifuge
WO2010130827A1 (fr) * 2009-05-15 2010-11-18 Braunschweigische Maschinenbauanstalt Ag Centrifugeuse à fonctionnement continu

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425063C2 (de) * 1994-07-15 1999-05-06 Braunschweigische Masch Bau Kontinuierlich arbeitende Zentrifuge zum Abschleudern von Zuckerfüllmassen
DE59507431D1 (de) * 1995-03-24 2000-01-20 Braunschweigische Masch Bau Zentrifuge mit einer Antriebseinheit und einem Endlostreibmittel
DE10046983A1 (de) * 2000-09-22 2002-04-18 Baker Hughes De Gmbh Zentrifuge zum mechanischen Entwässern und thermischen Trocknen von Schlämmen
DE10343376B4 (de) * 2003-09-17 2008-01-24 Braunschweigische Maschinenbauanstalt Ag Kontinuierlich arbeitende Siebzentrifuge sowie Verfahren zur Aufbereitung von Kristallsuspensionen
DE102009021589A1 (de) 2009-05-15 2010-11-25 Braunschweigische Maschinenbauanstalt Ag Kontinuierlich arbeitende Zentrifuge
AU2018390481A1 (en) * 2017-12-19 2020-07-09 Xeros Limited Filter for a treatment apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064351A (en) * 1979-12-04 1981-06-17 Braunschweigische Masch Bau Continuously operating centrifugal strainer for sugar massecuites
EP0152855A2 (fr) * 1984-02-17 1985-08-28 Hein, Lehmann Aktiengesellschaft Centrifuge à fonctionnement continu

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207663C3 (de) * 1972-02-18 1984-04-26 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Kontinuierlich arbeitende Zuckerzentrifuge
FR2274360A1 (fr) * 1974-06-17 1976-01-09 Fives Cail Babcock Perfectionnements aux dispositifs d'alimentation pour separateurs centrifuges a marche continue
DE2436044C3 (de) * 1974-07-26 1986-07-31 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge
DE3129392C1 (de) * 1981-07-25 1983-03-31 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Kontinuierlich arbeitende Zuckerzentrifuge mit federnden Zuckerauffangblechen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064351A (en) * 1979-12-04 1981-06-17 Braunschweigische Masch Bau Continuously operating centrifugal strainer for sugar massecuites
EP0152855A2 (fr) * 1984-02-17 1985-08-28 Hein, Lehmann Aktiengesellschaft Centrifuge à fonctionnement continu

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809863A1 (de) * 1998-03-07 1999-09-09 Dorr Oliver Deutschland Kontinuierlich arbeitende Zentrifuge
DE19809863C2 (de) * 1998-03-07 2001-11-22 Dorr Oliver Deutschland Kontinuierlich arbeitende Zentrifuge
WO2010130827A1 (fr) * 2009-05-15 2010-11-18 Braunschweigische Maschinenbauanstalt Ag Centrifugeuse à fonctionnement continu

Also Published As

Publication number Publication date
DE59005216D1 (de) 1994-05-05
JPH04267955A (ja) 1992-09-24
AU8836391A (en) 1993-04-01
US5244502A (en) 1993-09-14
ZA919428B (en) 1992-09-30
EP0487780B1 (fr) 1994-03-30
AU640835B2 (en) 1993-09-02
BR9105194A (pt) 1992-07-21
JPH0763654B2 (ja) 1995-07-12

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