EP0953380A2 - Procédé et dispositif pour racler les cristaux d'un tambour de centrifugation - Google Patents

Procédé et dispositif pour racler les cristaux d'un tambour de centrifugation Download PDF

Info

Publication number
EP0953380A2
EP0953380A2 EP99102995A EP99102995A EP0953380A2 EP 0953380 A2 EP0953380 A2 EP 0953380A2 EP 99102995 A EP99102995 A EP 99102995A EP 99102995 A EP99102995 A EP 99102995A EP 0953380 A2 EP0953380 A2 EP 0953380A2
Authority
EP
European Patent Office
Prior art keywords
drum
peeling knife
product
peeling
centrifuge
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
EP99102995A
Other languages
German (de)
English (en)
Other versions
EP0953380B1 (fr
EP0953380A3 (fr
Inventor
Siegfried Matusch
Mario Winnemuth
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 EP0953380A2 publication Critical patent/EP0953380A2/fr
Publication of EP0953380A3 publication Critical patent/EP0953380A3/fr
Application granted granted Critical
Publication of EP0953380B1 publication Critical patent/EP0953380B1/fr
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
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof

Definitions

  • the invention relates to a method for clearing the product from the centrifuge drum of a discontinuous centrifuge, whereby a peeling knife is pivoted into the flung off product layer and here with one against the direction of drum rotation the cutting edge peels off the product.
  • the invention further relates to a device for performing of the method, with a attached to a clearing bar and through this or around this swiveling paring knife, which in its pivoted position the product layer with one of the Drum direction of rotation against the cutting edge.
  • the clearing device from a pivotable about a vertical clearing bar Ploughshare on which a peeling knife is spring-mounted rotatably.
  • the paring knife which extends only over a short height section the centrifuge drum extends against the direction of rotation the centrifuge drum into the product layer, e.g. B. sugar layer pressed in until it touches the working sieve.
  • the peeling knife is then moved axially from its uppermost position moved towards the bottom of the drum and is then again move axially upwards before it goes into its Rest position is pivoted out.
  • the invention has for its object the product discharge, the discharge time and the remaining product in the centrifuge bowl to optimize.
  • this is Object achieved in that the peeling knife after its pivoting over almost the entire drum height of product contact the product over the entire drum height at the same time of the product layer rotating at the clearing speed peels off in layers and again when the drum screen is reached is swung out.
  • the above object is achieved in that the cutting edge almost over when the peeling knife is swung in the entire drum height extends.
  • This axial distance can be about Be 200 mm so that the peeling knife is in its idle state at a sufficient distance from the internals and the drum edge located.
  • the efficiency of the product discharge is thereby according to the invention increases that the pivoting of the peeling knife in the direction of rotation the centrifuge drum and its swiveling against this direction of rotation he follows. By swiveling against the direction of rotation The remaining product on the lower edge of the peeling knife becomes the drum spent on product discharge.
  • the Swinging in of the peeling knife is stopped immediately before the peeling knife touches the drum sieve.
  • the peeling knife can be controlled pneumatically via electropneumatic Valves.
  • Peeling knife is flatly concave on its front.
  • the cutting edge of the peeling knife with the Drum screen or drum shell an angle of 80 ° to a little less than 90 °.
  • the clearing bar is designed as a tube into which a nozzle assembly or individual nozzles are integrated for a deck or wash water task. Thereby can be a complete assembly from the product room Eliminate centrifuge.
  • the schematic representations show a centrifuge drum 1, the drum casing with holes 2 on its inner wall by a not shown Working strainer is covered.
  • the drum base 3 has a central one Product outlet opening on by a not shown Locking hood is lockable.
  • the direction of rotation of the Centrifuge drum 1 is indicated by an arrow 5.
  • An eccentric protrudes perpendicularly into the centrifuge drum 1 from above fixedly arranged clearing device from which only an axially parallel clearing bar 6 and a attached peeling knife 7 are shown.
  • the peeling knife 7 can be in the direction swivel onto the drum jacket 2.
  • Figure 3 shows the clearing device in the lowered position, in the peeling knife, which extends over the full drum height h 7 is lowered to the drum base 3. Also show Figures 3 and 4, the peeling knife 7 in its pivoted Position in which there is a Sugar layer 9 is present.
  • Figure 5 shows the peeling knife 7 in its pivoted position after the peeling process, in which the Cut 7a of the peeling knife 7 immediately before that drawn working sieve of the drum shell 2 is, however without making a metallic contact with this working sieve.
  • the cutting edge or cutting edge 7a closes with the Drum screen or drum shell 3 an angle ⁇ , the can be between 80 ° and a little less than 90 °.
  • Figure 5 leaves also recognize that the peeling knife seen in horizontal section 7 is formed flat concave on its front side 7b.
  • the magma fed into the centrifuge drum 1 is from the centrifugal drum 1 driven at high speed, the mother syrup adhering to the crystals through the Working sieve enters and out of the holes in the drum casing 3 the centrifuge housing, not shown, expires. Subsequently the crystals with a pure liquid washed. Those remaining in the drum after the separation process Crystals form a sugar layer 9 on the working sieve is peeled off from the clearing device. The peeled off Sugar crystals are subordinated after opening the cap Transport units fed.
  • Figure 1 shows the clearing device in the raised state, in the lower end of the pivoted peeling knife 7 from the drum base 3 has an axial distance a, which is about 200 mm can be.
  • the peeling knife 7 becomes from this idle state already during braking of the centrifuge drum 1 from it Spin speed to the clearing speed axially in the direction of Arrow 10 lowered until the lower end of the peeling knife 7 is immediately above the drum base 3 (see Figure 3). After It will reach the lower position and the clearing speed Swinging the peeling knife 7 in the direction of arrow 8 initiated.
  • Figure 4 shows that the pivoting process of the peeling knife 7 in the direction of rotation 5 of the centrifuge drum 1 takes place.
  • the peeling the sugar crystals then occur simultaneously over the entire Drum height h with continuous infeed of the peeling knife 7 in the radial direction to the outside.
  • the one in front of the peeling knife 7 Line 11 drawn in dashed lines indicates the product flow the crystals peeled from the sugar layer 9 by the peeling knife 7 on.
  • the peeling knife 7 has its shown in FIG When the end position is reached, the peeling knife remains for a few seconds in this end position before it returns to its position shown in FIGS and 2 shown starting position is pivoted out.

Landscapes

  • Centrifugal Separators (AREA)
EP99102995A 1998-04-29 1999-02-16 Procédé et dispositif pour racler les cristaux d'un tambour de centrifugation Expired - Lifetime EP0953380B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819065A DE19819065C1 (de) 1998-04-29 1998-04-29 Verfahren und Vorrichtung zum Ausräumen des Produktes aus einer Zentrifugentrommel
DE19819065 1998-04-29

Publications (3)

Publication Number Publication Date
EP0953380A2 true EP0953380A2 (fr) 1999-11-03
EP0953380A3 EP0953380A3 (fr) 2000-06-07
EP0953380B1 EP0953380B1 (fr) 2002-08-21

Family

ID=7866108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102995A Expired - Lifetime EP0953380B1 (fr) 1998-04-29 1999-02-16 Procédé et dispositif pour racler les cristaux d'un tambour de centrifugation

Country Status (3)

Country Link
US (1) US6177021B1 (fr)
EP (1) EP0953380B1 (fr)
DE (2) DE19819065C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011192A1 (fr) * 2013-09-30 2015-04-03 Fives Cail Babcock Essoreuse discontinue
US9764337B2 (en) 2011-11-24 2017-09-19 Bma Braunschweigische Maschinenbauanstalt Ag Discontinuous centrifuge with a scraper for scraping a product

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017205551A1 (de) * 2017-03-31 2018-10-04 Krones Ag Flaschenbehandlungsmaschine und Verfahren zum Reinigen des Pumpen-/Düsenschutzes der Flaschenbehandlungsmaschine
CN107094820A (zh) * 2017-05-31 2017-08-29 平湖市凯宇鲜菜有限公司 一种豆皮摊制装置
CN111225728B (zh) * 2018-05-15 2022-04-05 株式会社荒井铁工所 剪切部件及过滤装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558786A (fr) * 1955-10-19
IT1254625B (it) 1991-11-19 1995-09-28 Dispositivo e procedimento per il trattamento di acque fangose e di scarico.
GB9221956D0 (en) * 1992-10-20 1992-12-02 Broadbent & Sons Ltd Thomas Particle separation and drying apparatus
US5443726A (en) * 1993-10-13 1995-08-22 Tm Industrial Supply, Inc. Self-cleaning filter assembly
US5733238A (en) * 1995-10-24 1998-03-31 Carr Separations, Inc. Scraping assembly having angularly offset scraper blades for removing solids from an imperforate bowl centrifuge
JP3313286B2 (ja) * 1996-01-17 2002-08-12 株式会社松本機械製作所 遠心ろ過方法及び装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9764337B2 (en) 2011-11-24 2017-09-19 Bma Braunschweigische Maschinenbauanstalt Ag Discontinuous centrifuge with a scraper for scraping a product
FR3011192A1 (fr) * 2013-09-30 2015-04-03 Fives Cail Babcock Essoreuse discontinue

Also Published As

Publication number Publication date
US6177021B1 (en) 2001-01-23
EP0953380B1 (fr) 2002-08-21
DE19819065C1 (de) 1999-10-14
EP0953380A3 (fr) 2000-06-07
DE59902395D1 (de) 2002-09-26

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