EP0953380B1 - Verfahren und Vorrichtung zum Ausräumen des Kristallisats aus einer Zentrifugentrommel - Google Patents
Verfahren und Vorrichtung zum Ausräumen des Kristallisats aus einer Zentrifugentrommel Download PDFInfo
- Publication number
- EP0953380B1 EP0953380B1 EP99102995A EP99102995A EP0953380B1 EP 0953380 B1 EP0953380 B1 EP 0953380B1 EP 99102995 A EP99102995 A EP 99102995A EP 99102995 A EP99102995 A EP 99102995A EP 0953380 B1 EP0953380 B1 EP 0953380B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skimmer
- bowl
- swivelled
- product
- 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.)
- Expired - Lifetime
Links
Images
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 and an apparatus for performing this method.
- the clearing device from a swiveling around 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.
- DE 42 11 254 A1 discloses a method and a device for the treatment of sludge and / or waste water. Intended is a drivable, rotatably mounted in a stationary housing inner basket, which is a non-perforated cylindrical Wall and a removal device for the solid content having.
- This removal device comprises a pivot shaft, which is rotatably held in the fixed housing, arms which extend horizontally from the shaft and a scratch, attached to the arms.
- the scratch has a toothed Edge, the vertical length of which is somewhat shorter than the inner Height of the basket.
- the pivot shaft of the removal device can be switched between a hydraulic cylinder Scratch position and a waiting position can be pivoted. Latter is taken when dirty water or used water is introduced into the separator. In the scratch position the scratch is placed near the inner surface of the basket, around the solid part deposited on the inner surface of the basket scrape off or scrape off. When scraping or The inner basket is scraped off at approx. 300 rpm. turned.
- the invention has for its object the product discharge, the discharge time and the remaining product in the centrifuge bowl to optimize.
- This task is related to the method with the features of claim 1 and with respect to the device with the features of claim 7 solved.
- the peeling knife is used during the clearing process controlled radially towards the drum screen, so that the product is peeled off in layers.
- the Avoid clearing device By lifting of the peeling knife from the drum bottom will strike the Avoid clearing device when oscillating the centrifuge.
- there the axial distance achieved by lifting can be about 200 mm amount, so that the peeling knife in its rest state sufficient distance to the internals and the drum edge.
- 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. there it is useful to achieve a complete product discharge, when swinging out after reaching the drum screen the peeling knife only after a dwell time of a few Seconds.
- 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). To 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)
Description
- Figur 1
- in einem lotrechten Mittelschnitt die linke Hälfte der Zentrifugentrommel einer diskontinuierlichen Zuckerzentrifuge mit einer in diese von oben lotrecht hineinragenden, sich in angehobener Stellung befindlichen Ausräumeinrichtung mit ausgeschwenktem Schälmesser;
- Figur 2
- die Darstellung gemäß Figur 1 in Draufsicht;
- Figur 3
- in einer Darstellung gemäß Figur 1 die Ausräumeinrichtung in abgesenkter Stellung mit eingeschwenktem Schälmesser;
- Figur 4
- die Darstellung gemäß Figur 3 in Draufsicht und
- Figur 5
- in gegenüber den Figuren 1 bis 4 vergrößertem Maßstab in einem Horizontalschnitt das Schälmesser in eingeschwenkter Position.
Claims (11)
- Verfahren zum Ausräumen des Produktes aus der Zentrifugentrommel (1) einer diskontinuierlichen Zentrifuge,
bei dem ein Schälmesser (7) in die abgeschleuderte Produktschicht (Zuckerschicht 9) eingeschwenkt wird und hier mit einer gegen die Trommeldrehrichtung (Pfeil 5) gerichteten Schneide (7a) das Produkt abschält,
wobei das Schälmesser (7) nach seinem Einschwenken über nahezu die gesamte Trommelhöhe (h) Produktkontakt hat, gleichzeitig über die gesamte Trommelhöhe (h) das Produkt von der mit Räumdrehzahl rotierenden Produktschicht (9) schichtweise abschält und bei Erreichen des Trommelsiebes wieder ausgeschwenkt wird, und
wobei das Schälmesser (7) vor seinem Einschwenken in Axialrichtung (10) geringfügig in die Zentrifugentrommel (1) auf den Trommelboden (3) abgesenkt und nach seinem Ausschwenken vom Trommelboden (3) um einen entsprechenden axialen Abstand (a) wieder abgehoben wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Absenken des Schälmessers (7) bereits während des Abbremsens der Zentrifugentrommel (1) von ihrer Schleuderdrehzahl auf die Räumdrehzahl erfolgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass nach dem Erreichen des Trommelsiebes das Ausschwenken des Schälmessers (7) erst nach einer Verharrzeit von einigen Sekunden erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Einschwenken des Schälmessers (7) in Drehrichtung (5) der Zentrifugentrommel (1) und sein Ausschwenken gegen diese Drehrichtung (5) erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Einschwenkvorgang des Schälmessers (7) gestoppt wird unmittelbar bevor das Schälmesser (7) das Trommelsieb metallisch berührt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Steuerung des Schälmessers (7) pneumatisch erfolgt.
- Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, mit einem an einer Räumstange (6) befestigten und durch diese oder um diese verschwenkbaren Schälmesser (7), das in seiner eingeschwenkten Stellung die Produktschicht (9) mit einer der Trommeldrehrichtung (5) entgegengerichteten Schneide (7a) beaufschlagt,
wobei sich die Schneide (7a) bei eingeschwenktem Schälmesser (7) über nahezu die gesamte Trommelhöhe (h) erstreckt, und
mit einer Hub-, Absenk- und Verschwenkeinrichtung, über die das sich in abgeschwenkter Stellung befindliche Schälmesser (7) bis auf den Trommelboden (3) absenkbar, dann gegen die Produktschicht (9) einschwenkbar, nach Beendigung des Abschälprozesses wieder abschwenkbar und dann vom Trommelboden (3) wieder abhebbar ist. - Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass im Horizontalschnitt das Schälmesser (7) auf seiner Vorderseite (7b) flach konkav ausgebildet ist.
- Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Schneidkante (7a) des Schälmessers (7) mit dem Trommelsieb bzw. dem Trommelmantel (3) einen Winkel (α) von 80° bis etwas kleiner 90° einschließt.
- Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Schälmesser (7) eine Antihaftbeschichtung aufweist.
- Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die Räumstange (6) als Rohr ausgebildet ist, in das ein Düsenstock oder Einzeldüsen für eine Deck- bzw. Waschwasser-Aufgabe integriert sind.
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 EP0953380A2 (de) | 1999-11-03 |
EP0953380A3 EP0953380A3 (de) | 2000-06-07 |
EP0953380B1 true EP0953380B1 (de) | 2002-08-21 |
Family
ID=7866108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99102995A Expired - Lifetime EP0953380B1 (de) | 1998-04-29 | 1999-02-16 | Verfahren und Vorrichtung zum Ausräumen des Kristallisats aus einer Zentrifugentrommel |
Country Status (3)
Country | Link |
---|---|
US (1) | US6177021B1 (de) |
EP (1) | EP0953380B1 (de) |
DE (2) | DE19819065C1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119265A1 (de) * | 2011-11-24 | 2013-05-29 | Bma Braunschweigische Maschinenbauanstalt Ag | Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135979B4 (de) | 2001-07-24 | 2004-02-19 | Karl Storz Gmbh & Co. Kg | Medizinisches Instrument |
FR3011192A1 (fr) * | 2013-09-30 | 2015-04-03 | Fives Cail Babcock | Essoreuse discontinue |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE558786A (de) * | 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 |
-
1998
- 1998-04-29 DE DE19819065A patent/DE19819065C1/de not_active Expired - Fee Related
-
1999
- 1999-02-16 EP EP99102995A patent/EP0953380B1/de not_active Expired - Lifetime
- 1999-02-16 DE DE59902395T patent/DE59902395D1/de not_active Expired - Lifetime
- 1999-04-29 US US09/301,624 patent/US6177021B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119265A1 (de) * | 2011-11-24 | 2013-05-29 | Bma Braunschweigische Maschinenbauanstalt Ag | Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes |
WO2013076074A1 (de) | 2011-11-24 | 2013-05-30 | Bma Braunschweigische Maschinenbauanstalt Ag | Diskontinuierliche zentrifuge mit ausräumer zum ausräumen eines produktes |
DE102011119265B4 (de) | 2011-11-24 | 2018-01-04 | Bma Braunschweigische Maschinenbauanstalt Ag | Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes |
Also Published As
Publication number | Publication date |
---|---|
US6177021B1 (en) | 2001-01-23 |
DE19819065C1 (de) | 1999-10-14 |
EP0953380A3 (de) | 2000-06-07 |
DE59902395D1 (de) | 2002-09-26 |
EP0953380A2 (de) | 1999-11-03 |
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