EP1316362B1 - Device for discharging of solid material from a centrifuge - Google Patents
Device for discharging of solid material from a centrifuge Download PDFInfo
- Publication number
- EP1316362B1 EP1316362B1 EP02026821A EP02026821A EP1316362B1 EP 1316362 B1 EP1316362 B1 EP 1316362B1 EP 02026821 A EP02026821 A EP 02026821A EP 02026821 A EP02026821 A EP 02026821A EP 1316362 B1 EP1316362 B1 EP 1316362B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge
- discharge apparatus
- centrifuges
- cleaning elements
- cleaning
- 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
- 238000007599 discharging Methods 0.000 title claims 2
- 239000011343 solid material Substances 0.000 title 1
- 238000004140 cleaning Methods 0.000 claims description 37
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims 3
- 239000000047 product Substances 0.000 description 16
- 239000007787 solid Substances 0.000 description 11
- 239000012065 filter cake Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 241001417527 Pempheridae Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
-
- 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
Definitions
- the invention relates to devices for assisting the discharge of a solid filter cake from a centrifuge.
- the solids discharge is carried out at horizontally or vertically mounted peeler centrifuges normally characterized in that a peeler arranged on a scraper peels off a filter cake, wherein the filter cake is conveyed by a Austragungsstoff from the centrifuge drum.
- the Austragungsstoff can be designed as a steep sliding plate, a so-called chute, or as Schneckenaustrag.
- the discharge surface can be coated with a material which has a low tendency to adhesion to the solids.
- these coatings generally have a significantly lower corrosion resistance than the highly resistant base materials of the centrifuge (stainless steel, nickel-based material, titanium, etc.).
- the coating of suspension, washing or cleaning liquid is attacked or too quickly due to abrasion wear.
- An equipped as a suction scraper is for example from the DE-A-3340636 known.
- the peeled solid is entrained by a gas flow.
- a relatively high gas flow is required, which requires a high expenditure on equipment.
- the solids have to be separated from the gas stream which further increases the expenditure on equipment.
- the DE-C-4330594 and the DE-A-1933545 describe each centrifuges with discharge devices in the form of screw conveyors.
- the DE-A-3905341 describes a discharge device for centrifuges in the form of a chute or a fall plate according to the preamble of patent claim 1.
- the invention has for its object to provide a discharge for the product discharge from centrifuges, are largely avoided in the product attachments.
- cleaning elements are mounted in the discharge component, which clean the discharge surface of the Austragungsbauteils. Suitable movements (e.g., pivoting, rotating, pushing, or a combination thereof) of the cleaning elements over the inner surface of the chute prevent deposits or dislodge any deposits formed and, for example, carry gravity or other transport assisting effects out of the chute.
- Fig. 1 shows a schematic cross-sectional view of a centrifuge with discharge.
- a centrifuge drum 1 is rotatably mounted on a shaft, wherein the lateral surfaces of the centrifuge drum 1 are formed as a filter. Separated suspension is introduced into the interior of the centrifuge drum and the centrifuge drum is rotated. In doing so, liquid enters through the lateral surface of the centrifuge drum into the housing and is discharged there. At the inner surface of the drum shell thereby collects a filter cake.
- a sweeper 2 which can be swiveled by means of a drive 3, is provided.
- the reamer 2 is moved from a rest position to a peeling position in the filter cake, wherein the centrifuge drum 1 can be set in a low-speed rotation.
- solids are peeled off the drum shell and fall under gravity into a chute 4, which is designed for example as a pipe with a steep and a vertical section.
- the product is supplied for further processing.
- the device described so far known centrifuges with discharge organs, and further details of the centrifuge are therefore not explained in detail.
- a cleaning element 5 is provided according to the invention, which protrudes into the interior of the chute and is rotatably supported via an axle 6 by means of a drive 10.
- the cleaning element 5 extends in the position shown parallel to the sliding surface of the chute 4 and sweeps over the sliding surface during rotation and prevents or abolishes product adhesions.
- the cleaning element can be operated continuously or intermittently. In this case, the cleaning element is temporarily rotated in a rest position remote from the sliding surface of the chute.
- FIG. 2 shows a cross section through the chute along the dashed line A of FIG. 1.
- the cleaning element 5 is formed as a sheet, the product adhesions 7 dissolves or removed from the sliding surface of the chute 4.
- FIG. 3 shows an embodiment in which the cleaning element is designed as a nozzle element 8.
- the nozzle member 8 is supplied via a hollow shaft 6 gas, in particular air, and the gas is introduced from the cleaning element 8 in the chute wall adhering product 7, so that the separation is supported.
- the discharge unlike the discharge, no large gas flow required, so that the associated disadvantages mentioned above do not occur.
- the cleaning element is designed as a scraper, which is pivoted as needed about the longitudinal axis of the chute, wherein the inner surface of the chute is cleaned. In the rest position of the cleaning element, the solids flow is not hindered, which can be achieved for example by positioning on the pivot axis.
- the cleaning element may also be designed as a single-leaf element rotating symmetrically or eccentrically about the central axis.
- the cleaning device comprises a plurality of blades which rotate about the central axis, wherein the axis of rotation need not be located centrally in the chute.
- the cleaning elements can also be arranged so that they are moved only at the points at which deposits are expected, with a small distance over the inner surface of the chute. In Schurrenformen that are not performed concentrically about a central axis, several cleaning elements can be used in the longitudinal direction of the chute, which clean only a certain contour of the chute.
- bars may be rotated about an axis, pivoted, or moved by linear movement along the inner surface of the chute such that the product is firmly bonded to the inner surface the chute is destroyed.
- the pivot axis of one or more cleaning elements may be arranged transversely to the center axis of the chute, wherein e.g. the sheet is placed in the rest position so that it does not hinder the flow of product and is selectively guided as needed over the places where form deposits.
- the avoidance or removal of deposits by this method is also possible on other fixtures that allow in the rest position an unobstructed flow of the product through the chute and remove the deposit if necessary, they are arranged for inspection so that a complete insight and inspection of the surfaces is possible.
- the cleaning elements may be provided at the top or one-sided / two-sided with nozzles.
- the additional gas stream reduces / prevents the attachment of the product or supports the cleaning.
- embodiments are conceivable in which no solids, but e.g. viscous fluids are discharged from the centrifuge.
- the cleaning elements may be arranged so as not to interfere with normal production flow through the discharge means, to be used only when needed, when deposits build up, generate no or no appreciable dead spots in the process space, do not interfere with cleaning of the process space, and provide a cleanability of inspection without disassembly or one opposite allow the execution without cleaning element increased effort.
Landscapes
- Centrifugal Separators (AREA)
- Cleaning In General (AREA)
Abstract
Description
Die Erfindung bezieht sich auf Vorrichtungen zur Unterstützung des Austrages eines Feststoff-Filterkuchens aus einer Zentrifuge.The invention relates to devices for assisting the discharge of a solid filter cake from a centrifuge.
Der Feststoffaustrag erfolgt bei horizontal oder vertikal gelagerten Schälzentrifugen normalerweise dadurch, daß ein an einem Räumer angeordnetes Schälmesser einen Filterkuchen abschält, wobei der Filterkuchen durch ein Austragungsmittel aus der Zentrifugentrommel gefördert wird. Das Austragungsmittel kann als ein steil verlaufendes Gleitblech, eine sogenannte Schurre, oder als Schneckenaustrag ausgebildet sein.The solids discharge is carried out at horizontally or vertically mounted peeler centrifuges normally characterized in that a peeler arranged on a scraper peels off a filter cake, wherein the filter cake is conveyed by a Austragungsmittel from the centrifuge drum. The Austragungsmittel can be designed as a steep sliding plate, a so-called chute, or as Schneckenaustrag.
Alle bekannten Austragungssysteme für diskontinuierlich arbeitende Filterzentrifugen weisen das Problem auf, daß je nach Anwendungsfall auch sehr feine, nichtkristalline, teilweise feuchte Feststoffe mit zur Anlagerung an Oberflächen neigender Konsistenz ausgetragen werden müssen. Daher besteht die Gefahr, daß während des Austragungsvorganges der aus der Zentrifugentrommel abgeschälte Filterkuchen teilweise an die Oberfläche des Austragungsmittels abgelagert wird und ein zunehmender Produktaufbau erfolgt.All known Austragungssysteme for discontinuous filter centrifuges have the problem that, depending on the application, even very fine, non-crystalline, partially moist solids must be discharged with the tendency to deposit on surfaces prone consistency. Therefore, there is a fear that during the discharge process, the filter cake peeled off from the centrifuge drum is partially deposited on the surface of the discharge medium and an increasing product buildup occurs.
Diese Produktablagerungen sind von Nachteil, da z.B. sie eine Verlegung des Austragungsmittels bewirken, sie zu Verunreinigungen/Kontaminationen nachfolgender Zentrifugenchargen führen, sie die automatische Reinigung mit reproduzierbar guten Ergebnissen zwischen den einzelnen Produktchargen erschweren bzw. verhindern oder auch der angelagerte Feststoff sich in geänderter Konsistenz (z.B. verdichtet statt pulverförmig) vom Austragungsmittel löst.These product deposits are disadvantageous because, for example, they cause a displacement of the discharge, they lead to contamination / contamination of subsequent centrifuge batches, complicate the automatic cleaning with reproducible good results between the batches of product or prevent or even the attached Solid dissolves in modified consistency (eg compacted instead of powdered) from the Austragungsmittel.
Zur Vermeidung von Ablagerungen am Austragsmittel kann die Austragsfläche mit einem Material beschichtet werden, das eine geringe Adhäsionsneigung gegenüber den Feststoffen aufweist. Diese Beschichtungen weisen jedoch in der Regel gegenüber den hochbeständigen Grundwerkstoffen der Zentrifuge (Edelstahl, Nickel-Basis-Werkstoff, Titan etc.) eine wesentlich geringere Korrosionsbeständigkeit auf. Zu dem besteht die Gefahr, daß die Beschichtung von Suspensions-, Wasch- oder Reinigungsflüssigkeit angegriffen wird bzw. wegen zu geringer Abrasionsfähigkeit zu schnell verschleißt.To avoid deposits on the discharge, the discharge surface can be coated with a material which has a low tendency to adhesion to the solids. However, these coatings generally have a significantly lower corrosion resistance than the highly resistant base materials of the centrifuge (stainless steel, nickel-based material, titanium, etc.). There is also the risk that the coating of suspension, washing or cleaning liquid is attacked or too quickly due to abrasion wear.
Ein als Saugdüse ausgestatteter Räumer ist beispielsweise aus der
Bei relativ klebrigen oder viskosen Feststoffen können auch Schnecken als Austragsorgane verwendet werden. Dabei ergibt sich jedoch das Problem, daß Schnecken nur schwer gereinigt werden können, was insbesondere in der pharmazeutischen Industrie bei Herstellung hochreiner Produkte nachteilig ist. Empfindliche Produkte können durch das Schneckenaustragsorgan zermahlen werden. Bei der Herstellung hochreiner Produkte besteht ferner die Anforderung, daß das Austragsorgan nach jedem Reinigungsvorgang inspiziert werden, was nur mit hohem Arbeitsaufwand möglich ist und die Gefahr mit sich bringt, bei der Demontage das Innere des Austragsorgans zu kontaminieren.With relatively sticky or viscous solids, it is also possible to use screws as discharge elements. However, there is the problem that snails are difficult to clean, which is particularly disadvantageous in the pharmaceutical industry in the production of high purity products. Sensitive products can be ground by the auger. In the production of high purity products, there is also the requirement that the discharge be inspected after each cleaning process, which is possible only with great effort and involves the risk to contaminate the interior of the discharge during disassembly.
Die
Die
Der Erfindung liegt die Aufgabe zugrunde, ein Austragsorgan für den Produktaustrag aus Zentrifugen anzugeben, bei dem Produktanhaftungen weitgehend vermieden werden.The invention has for its object to provide a discharge for the product discharge from centrifuges, are largely avoided in the product attachments.
Die Lösung dieser Aufgabe erfolgt durch eine Vorrichtung gemäß Patentanspruch 1. Die abhängigen Ansprüche beziehen sich auf vorteilhafte Weiterentwicklungen der Erfindung.The solution of this object is achieved by a device according to
Erfindungsgemäß werden in dem Austragungsbauteil Reinigungselemente angebracht, die die Austragungsfläche des Austragungsbauteils abreinigen. Durch geeignete Bewegungen (z.B. Schwenken, Drehen, Schieben oder einer Kombination daraus) der Reinigungselemente über die Innenoberfläche der Schurre werden Ablagerungen verhindert bzw. die ggf. entstandenen Ablagerungen gelöst und durch zum Beispiel die Schwerkraft oder andere transportunterstützende Effekte aus der Schurre herausgetragen.According to the invention cleaning elements are mounted in the discharge component, which clean the discharge surface of the Austragungsbauteils. Suitable movements (e.g., pivoting, rotating, pushing, or a combination thereof) of the cleaning elements over the inner surface of the chute prevent deposits or dislodge any deposits formed and, for example, carry gravity or other transport assisting effects out of the chute.
Ausführungsbeispiele der Erfindung werden anhand der beigefügten Zeichnungen erläutert. Es zeigen:
- Fig. 1
- eine schematische Seitenstellung einer Zentrifuge mit Austragsorgan,
- Fig. 2
- eine Querschnittsdarstellung des Austragsorgans und
- Fig. 3
- eine der Fig. 2 entsprechende Darstellung einer Variante des Austragsorgans.
- Fig. 1
- a schematic side position of a centrifuge with discharge,
- Fig. 2
- a cross-sectional view of the discharge and
- Fig. 3
- one of Fig. 2 corresponding representation of a variant of the discharge.
Fig. 1 zeigt in schematischer Querschnittsdarstellung eine Zentrifuge mit Austragsorgan. In einem Gehäuse 9 ist eine Zentrifugentrommel 1 auf einer Welle drehbar gelagert, wobei die Mantelflächen der Zentrifugentrommel 1 als Filter ausgebildet sind. Abzutrennende Suspension wird in das Innere der Zentrifugentrommel eingeleitet und die Zentrifugentrommel wird in Drehung versetzt. Dabei tritt Flüssigkeit durch die Mantelfläche der Zentrifugentrommel in das Gehäuse ein und wird dort abgeführt. An der Innenfläche des Trommelmantels sammelt sich dabei ein Filterkuchen.Fig. 1 shows a schematic cross-sectional view of a centrifuge with discharge. In a
Zur Ablösung des Filterkuchens ist ein über einen Antrieb 3 schwenbarer Räumer 2 vorgesehen.To detach the filter cake, a
Nachdem sich ein Filterkuchen in einer gewünschten bzw. vorgegebenen Dicke aufgebaut hat, wird der Räumer 2 aus einer Ruheposition in eine Schälposition in den Filterkuchen verfahren, wobei die Zentrifugentrommel 1 in eine Drehung mit niedriger Drehzahl versetzt werden kann. Dabei werden Feststoffe vom Trommelmantel abgeschält und fallen unter Schwerkraft in eine Schurre 4, die beispielsweise als Rohr mit einem steil verlaufenden und einem senkrecht stehenden Abschnitt ausgeführt ist. Nach dem Durchtritt durch die Schurre (gestrichelte Linie P in Fig. 1) wird das Produkt der Weiterverarbeitung zugeführt. Insoweit entspricht die bisher beschriebene Vorrichtung bekannten Zentrifugen mit Austragsorganen, und weitere Einzelheiten der Zentrifuge werden deshalb nicht näher erläutert.After a filter cake has built up in a desired or predetermined thickness, the
Um Produkthaftungen an der Gleitfläche der Schurre zu verhindern oder zu beseitigen ist erfindungsgemäß ein Reinigungselement 5 vorgesehen, das in das Innere der Schurre ragt und über eine Achse 6 mittels eines Antriebs 10 drehbar gelagert ist.In order to prevent or eliminate product adhesion to the sliding surface of the chute, a
Das Reinigungselement 5 erstreckt sich in der dargestellten Position parallel zur Gleitfläche der Schurre 4 und überstreicht bei der Drehung die Gleitfläche und verhindert bzw. beseitigt Produktanhaftungen. Das Reinigungselement kann dabei kontinuierlich betrieben werden oder intermittierend. In diesem Fall wird das Reinigungselement zeitweilig in einer von der Gleitfläche der Schurre entfernte Ruheposition gedreht.The
Fig. 2 zeigt einen Querschnitt durch die Schurre entlang der gestrichelten Linie A der Fig. 1.FIG. 2 shows a cross section through the chute along the dashed line A of FIG. 1. FIG.
In diesem Ausführungsbeispiel ist das Reinigungselement 5 als Blatt ausgebildet, das Produktanhaftungen 7 von der Gleitfläche der Schurre 4 löst bzw. abtransportiert.In this embodiment, the
Schließlich zeigt Fig. 3 ein Ausführungsbeispiel, bei dem das Reinigungselement als ein Düsenelement 8 ausgebildet ist. Dem Düsenelement 8 wird über eine Hohlwelle 6 Gas, insbesondere Luft, zugeführt, und das Gas wird von dem Reinigungselement 8 in das der Schurrenwand anhaftende Produkt 7 eingeleitet, so daß die Ablösung unterstützt wird. Hier ist, anders als beim Austragen, kein großer Gasstrom erforderlich, so daß die damit verbundenen eingangs genannten Nachteile nicht auftreten.Finally, FIG. 3 shows an embodiment in which the cleaning element is designed as a nozzle element 8. The nozzle member 8 is supplied via a
Bei einem weiteren Ausführungsbeispiel ist das Reinigungselement als ein Schaber ausgeführt, der bei Bedarf um die Längsachse der Schurre geschwenkt wird, wobei die Innenoberfläche der Schurre abgereinigt wird. In der Ruhestellung des Reinigungselementes wird der Feststoff-Fluß nicht behindert, was z.B. durch Positionierung über die Schwenkachse erreicht werden kann. Das Reinigungselement kann auch als ein symmetrisch oder exzentrisch um die Mittelachse rotierendes einblättriges Blechelement ausgeführt sein. In einem weiteren Ausführungsbeispiel umfaßt die Reinigungsvorrichtung mehrere Blätter, die um die Mittelachse rotieren, wobei die Rotationsachse nicht zentrisch in der Schurre zu liegen braucht. Die Reinigungselemente können auch so angeordnet werden, daß sie nur an den Stellen, an denen Ablagerungen erwartet werden, mit geringem Abstand über die Innenoberfläche der Schurre bewegt werden. Bei Schurrenformen, die nicht konzentrisch um eine Mittelachse ausgeführt sind, können mehrere Reinigungselemente in Längsrichtung der Schurre eingesetzt werden, die jeweils nur eine gewisse Kontur der Schurre abreinigen.In a further embodiment, the cleaning element is designed as a scraper, which is pivoted as needed about the longitudinal axis of the chute, wherein the inner surface of the chute is cleaned. In the rest position of the cleaning element, the solids flow is not hindered, which can be achieved for example by positioning on the pivot axis. The cleaning element may also be designed as a single-leaf element rotating symmetrically or eccentrically about the central axis. In a further embodiment, the cleaning device comprises a plurality of blades which rotate about the central axis, wherein the axis of rotation need not be located centrally in the chute. The cleaning elements can also be arranged so that they are moved only at the points at which deposits are expected, with a small distance over the inner surface of the chute. In Schurrenformen that are not performed concentrically about a central axis, several cleaning elements can be used in the longitudinal direction of the chute, which clean only a certain contour of the chute.
Neben den Reinigungsvorrichtungen, in denen ein Blatt um eine Achse geschwenkt oder bewegt wird, können in weiteren Ausführungsformen Stäbe um eine Achse rotiert, geschwenkt oder durch eine lineare Bewegung entlang der Innenoberfläche der Schurre derart bewegt werden, daß die feste Verbindung des Produktes mit der Innenoberfläche der Schurre zerstört wird.In addition to cleaning devices in which a sheet is pivoted or moved about an axis, in further embodiments bars may be rotated about an axis, pivoted, or moved by linear movement along the inner surface of the chute such that the product is firmly bonded to the inner surface the chute is destroyed.
In weiteren Ausführungsformen der Reinigungsvorrichtung kann die Schwenkachse eines oder mehrerer Reinigungselemente quer zur Mittelachse der Schurre angeordnet sein, wobei z.B. das Blatt in der Ruheposition so gestellt wird, daß es den Produktfluß nicht behindert und bei Bedarf gezielt über die Stellen geführt wird, an denen sich Ablagerungen ausbilden. Die Vermeidung bzw. Entfernung von Ablagerungen durch dieses Verfahren ist auch über andere Einbauten möglich, die in der Ruheposition einen ungehinderten Durchfluß des Produktes durch die Schurre gestatten und bei Bedarf die Ablagerung entfernen können, wobei sie zur Inspektion so angeordnet werden, daß eine vollständige Einsicht und Inspektion der Oberflächen möglich ist.In further embodiments of the cleaning device, the pivot axis of one or more cleaning elements may be arranged transversely to the center axis of the chute, wherein e.g. the sheet is placed in the rest position so that it does not hinder the flow of product and is selectively guided as needed over the places where form deposits. The avoidance or removal of deposits by this method is also possible on other fixtures that allow in the rest position an unobstructed flow of the product through the chute and remove the deposit if necessary, they are arranged for inspection so that a complete insight and inspection of the surfaces is possible.
Weiterhin können die Reinigungselemente an der Spitze oder einseitig/zweiseitig mit Düsen versehen sein. Der zusätzliche Gasstrom verringert/verhindert die Anlagerung des Produktes bzw. unterstützt die Abreinigung. Weiterhin sind für die Reinigung der Schurre Ausführungsformen denkbär, bei denen keine Feststoffe, sondern z.B. viskose Flüssigkeiten aus der Zentrifuge ausgetragen werden.Furthermore, the cleaning elements may be provided at the top or one-sided / two-sided with nozzles. The additional gas stream reduces / prevents the attachment of the product or supports the cleaning. Furthermore, for the cleaning of the chute, embodiments are conceivable in which no solids, but e.g. viscous fluids are discharged from the centrifuge.
Die Reinigungselemente können so angeordnet sein, daß sie den normalen Produktionsfluß durch das Austragungsmittel nicht behindern, nur bei Bedarf eingesetzt werden, wenn sich Ablagerungen aufbauen, keine oder keine nennenswerten Toträume im Verfahrensraum erzeugen, die Reinigung des Verfahrensraums nicht beeinträchtigen und die Inspizierbarkeit einer erfolgten Reinigung ohne Demontage oder einen gegenüber der Ausführung ohne Reinigungselement erhöhtem Aufwand ermöglichen.The cleaning elements may be arranged so as not to interfere with normal production flow through the discharge means, to be used only when needed, when deposits build up, generate no or no appreciable dead spots in the process space, do not interfere with cleaning of the process space, and provide a cleanability of inspection without disassembly or one opposite allow the execution without cleaning element increased effort.
Claims (12)
- A discharge apparatus for discharging products from centrifuges, with a discharge component (4) with a discharge surface in the form of a steeply extending slide sheet, characterised by a cleaning device with a cleaning element (5) which cleans at least one part of the discharge surface.
- A discharge apparatus according to Claim 1, characterised in that the cleaning device is in the form of a scraping element.
- A discharge apparatus for centrifuges according to Claim 2, characterised in that the scraping element is in the form of a movable blade or a movable plate or a movable rod.
- A discharge apparatus for centrifuges according to Claim 2, characterised in that the scraping element is in the form of a blade rotating about an axis or a plate rotating about an axis or a rod rotating about an axis.
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that one or more cleaning elements (5) are movable by pivoting, rotation or sliding over the discharge surface.
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that one or more cleaning elements (5) are mounted concentrically or eccentrically to rotate about a centre axis of a tubular discharge component (4).
- A discharge apparatus for centrifuges according to any one of Claims 1 to 5, characterised in that the pivot axis of one or more cleaning elements (5) is disposed transversely to the longitudinal axis or transport direction of the discharge component (4).
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that the cleaning elements (5) can be disposed in rest positions which do not impede the product discharge.
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that the cleaning elements (5) are arranged so that only the locations are cleaned at which deposits (7) are expected.
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that one or more nozzles for a gas stream are mounted on one or more cleaning elements (8).
- A discharge apparatus for centrifuges according to any one of the preceding Claims, characterised in that the cleaning elements (5,8) are arranged so that the normal production flow is not disturbed.
- A centrifuge with a discharge apparatus according to any one of the preceding Claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10158705 | 2001-11-29 | ||
| DE10158705A DE10158705A1 (en) | 2001-11-29 | 2001-11-29 | Device for discharging a solid from a centrifuge |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1316362A2 EP1316362A2 (en) | 2003-06-04 |
| EP1316362A3 EP1316362A3 (en) | 2003-07-16 |
| EP1316362B1 true EP1316362B1 (en) | 2007-10-10 |
Family
ID=7707466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02026821A Expired - Lifetime EP1316362B1 (en) | 2001-11-29 | 2002-11-28 | Device for discharging of solid material from a centrifuge |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1316362B1 (en) |
| AT (1) | ATE375205T1 (en) |
| DE (2) | DE10158705A1 (en) |
| ES (1) | ES2292678T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1787723B1 (en) * | 2005-11-18 | 2017-02-22 | Ferrum AG | Centrifuge cartridge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1731091U (en) * | 1956-08-01 | 1956-09-27 | Krauss Maffei Ag | DISCHARGE CHUTE FOR SHEEL CENTRIFUGES. |
| DE1871984U (en) * | 1963-03-27 | 1963-05-09 | Krauss Maffei Ag | DEVICE FOR PEELING THE SOLID MATERIAL LAYER FROM THE DRUM COVER OF THE SHEEL CENTRIFUGES |
| DE1782367C3 (en) * | 1966-03-24 | 1974-02-28 | Krauss-Maffei Ag, 8000 Muenchen | Device for removing the solid matter from a centrifuge. Eliminated from: 1298448 |
| DE1933545A1 (en) * | 1969-07-02 | 1971-01-21 | Titus Hans Joachim | Peeling and discharge device for centrifugal material |
| DE3905341A1 (en) * | 1988-03-30 | 1989-10-19 | Kloeckner Humboldt Deutz Ag | CENTRIFUGAL APPARATUS |
| JP2528061B2 (en) * | 1992-08-28 | 1996-08-28 | 三菱化工機株式会社 | Rotary discharge centrifuge |
| DE4330594C1 (en) * | 1993-09-09 | 1994-09-22 | Krauss Maffei Verfahrenstechni | Apparatus for removing a filter cake base layer |
-
2001
- 2001-11-29 DE DE10158705A patent/DE10158705A1/en not_active Withdrawn
-
2002
- 2002-11-28 AT AT02026821T patent/ATE375205T1/en not_active IP Right Cessation
- 2002-11-28 EP EP02026821A patent/EP1316362B1/en not_active Expired - Lifetime
- 2002-11-28 DE DE50211039T patent/DE50211039D1/en not_active Expired - Lifetime
- 2002-11-28 ES ES02026821T patent/ES2292678T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1316362A2 (en) | 2003-06-04 |
| DE10158705A1 (en) | 2003-06-18 |
| DE50211039D1 (en) | 2007-11-22 |
| ES2292678T3 (en) | 2008-03-16 |
| EP1316362A3 (en) | 2003-07-16 |
| ATE375205T1 (en) | 2007-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT503788B1 (en) | Device for continuous filtration of impurities from plastic melt, comprises a filter insert in the form of hollow rotating body mounted about its axis of rotation with respect to housing, and a discharge device having transport screw | |
| DE3511711C2 (en) | Reprocessing high-quality plastics from waste and scrap workpieces | |
| EP3641943A1 (en) | Centrifuge | |
| EP1902825A1 (en) | Apparatus for dewatering and drying solid materials, especially plastics pelletized using an underwater granulator | |
| EP0454045A2 (en) | Centrifugal drier | |
| DE19508725A1 (en) | Horizontal-axis drum, for granulation and coating a fluidised-bed charge, | |
| EP1316362B1 (en) | Device for discharging of solid material from a centrifuge | |
| CH660073A5 (en) | VACUUM DRYING DEVICE. | |
| EP1228807B1 (en) | Device and method for scraping a solid cake out of a centrifuge drum | |
| EP1565064B1 (en) | Coating device with integrated cleaning device | |
| EP0744212B1 (en) | Coating drum | |
| DE3342689A1 (en) | Filter apparatus for eliminating impurities from liquids, in particular from dispersion paints | |
| EP1228808B1 (en) | Device and method for scraping and conveying a solid cake out of a centifuge drum | |
| CH675375A5 (en) | ||
| EP0456997B1 (en) | Device for separating solids from a liquid | |
| DE4330594C1 (en) | Apparatus for removing a filter cake base layer | |
| DE2701582C3 (en) | Device for separating metallic particles from the flow of free-flowing plastics fed to a screw machine | |
| EP2759204A1 (en) | Filling machine | |
| EP0972553B1 (en) | Separator device for use in the manufacture of printed circuit boards | |
| DE4428137C2 (en) | Bulk material conveyor | |
| WO2024100000A1 (en) | Conveying devices for bulk material, system comprising a conveying device of this type and method for cleaning a conveying device | |
| DE19949288A1 (en) | Tube reactor for the treatment of batch feed material | |
| EP3735322A1 (en) | Skimmer centrifuge | |
| DE19707388A1 (en) | Centrifuge with integral secondary treatment of residue | |
| EP3469909A1 (en) | Continuously operating dough kneading device |
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 |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| 17P | Request for examination filed |
Effective date: 20031218 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| 17Q | First examination report despatched |
Effective date: 20040903 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KMPT AG |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: CH Ref legal event code: NV Representative=s name: TROESCH SCHEIDEGGER WERNER AG |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| REF | Corresponds to: |
Ref document number: 50211039 Country of ref document: DE Date of ref document: 20071122 Kind code of ref document: P |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20080103 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2292678 Country of ref document: ES Kind code of ref document: T3 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| ET | Fr: translation filed | ||
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080110 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080110 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080310 |
|
| BERE | Be: lapsed |
Owner name: KMPT A.G. Effective date: 20071130 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| 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 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| 26N | No opposition filed |
Effective date: 20080711 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080111 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071128 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071128 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20071010 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20091124 Year of fee payment: 8 Ref country code: ES Payment date: 20091123 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20091202 Year of fee payment: 8 Ref country code: GB Payment date: 20091123 Year of fee payment: 8 Ref country code: IT Payment date: 20091128 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20100121 Year of fee payment: 8 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20101128 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110801 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50211039 Country of ref document: DE Effective date: 20110601 Ref country code: DE Ref legal event code: R119 Ref document number: 50211039 Country of ref document: DE Effective date: 20110531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101130 |
|
| 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: 20101128 |
|
| 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 Effective date: 20101128 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20120110 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101129 |
|
| 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: 20110531 |