EP2050505B1 - Centrifuge and separator disc - Google Patents

Centrifuge and separator disc Download PDF

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Publication number
EP2050505B1
EP2050505B1 EP08166801.4A EP08166801A EP2050505B1 EP 2050505 B1 EP2050505 B1 EP 2050505B1 EP 08166801 A EP08166801 A EP 08166801A EP 2050505 B1 EP2050505 B1 EP 2050505B1
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EP
European Patent Office
Prior art keywords
separator
corrugations
spacers
centrifuge according
separator discs
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EP08166801.4A
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German (de)
French (fr)
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EP2050505A2 (en
EP2050505A3 (en
Inventor
Kathrin Quiter
Andreas Penkl
Thomas Bathelt
Markus HÜLLMANN
Thomas Kleimann
Klaus Baalmann
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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Publication of EP2050505A3 publication Critical patent/EP2050505A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2066—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with additional disc stacks

Definitions

  • the invention relates to a centrifuge according to the preamble of claim 1.
  • Trenntellerdigit show, for example, the DE 36 07 526 A1 or the DE-OS 19 09 996 or the US 2,599,629 ,
  • a generic separator is from the US 694,736 known.
  • Separator plates are commonly made of stainless steel. They are usually relatively thin.
  • the prior art is further the WO 2005/005050 in which it is proposed to subject the separation plates at least in sections to a surface treatment which alters the surface energy.
  • the separation plates consist of a material into which at least sections of the surface energy relative to the first material diffusing other material is diffused, for example, with processes which surface treatment methods of semiconductor technology are similar, ie for example with the aid of a plasma jet or the like. This procedure has proven itself.
  • the invention solves this problem by the subject matters of claim 1.
  • the separation plates are stabilized in a simple manner, which in turn has an advantageous effect in particular during operation.
  • the beads are adapted in adaptation to the processed product P and adapted to the product to be processed, that at the surface or on the lower surface of the separation plate in the separation plate stack no angle given to the horizontal, which are smaller than the angle of repose of the separated solid phase of the product to be processed. In this way it is effectively prevented that easily soiling can form on the plates, which would be the case with more contoured beads.
  • Circumferentially distributed at least two or more spacers between axially adjacent separation plates are preferably provided, which are preferably formed laschenformig and such that the contour of the spacers follows the contour of the beads. In this way, a minimum distance between the plates is ensured in the area of the beads.
  • the spacers are preferably dimensioned in the axial direction in such a way that they protrude upwards over the beads in the direction of the respectively axially adjacent separating plate.
  • the separation plates and their beads are formed such that each lower conical envelope surface and an upper conical envelope surface axially adjacent separation plate in angle segments between circumferentially adjacent spacers either just abut each other or do not touch between the spacers , wherein the respective lower envelope surface of the upper separator plate preferably lies above the respective upper of the envelope surface of the respectively lower separator plate.
  • the spacers may extend radially in a preferred embodiment, but they may also be curved or formed spirally or punctiform.
  • separation discs are also provided for the separator disc packs of centrifuges which are suitable for use in centrifuges of all kinds, such as in jet separators or e.g. suitable for use in discontinuous solids discharging separators or for use in decanters with a separator plate package.
  • Fig. 3a and b each show a schematic representation of a once clarifier ( Fig. 3a ) and once as a separator ( 3b ) formed centrifugal drum 1, in each of which a Trenntellervers 2 is inserted.
  • the function of such nozzle separators with an inlet 3 and processes 4, 5 and 4, 5, 6 has long been well known and therefore needs no further explanation.
  • FIG. 1 shows a schematic representation of a portion of a Trenntellervers invention 2 from stacked separation plates 7, which preferably consist of a steel sheet material.
  • the separation plates 7 may each have openings which form a climbing channel in interaction.
  • the separating plates are arranged axially spaced from each other, so that in each case a gap is formed between them.
  • the separation plates 2 have a conical basic shape 8 (see Fig. 2 ), so that a substantially conical plate stack 2 is formed.
  • a deviation from the conical basic shape 8 of the separating plates is produced by at least one or more beads 9 in the conical region of the separating plates 7.
  • the beads 9 in the separation plates 2 in the circumferential direction completely or at least between spacers 10 circumferentially formed.
  • the beads 9 stabilize the separating plates 7 in a simple manner and thus in particular simplify their handling, without adversely affecting the clarification or separation process.
  • At least two or more, in particular five or more, of the circumferential beads 9 are distributed from the inside to the outside in the conical region of the separation plates 7.
  • Each separating plate 7 is preferably provided with the beads 9 over the entire conical region.
  • the corrugations 9 form a wave-like contour with first and second inflection points (W1, W2) which lie above (inflection points W1) and below (inflection points W2) of the conical basic shape or contour 8 in the case of a separator with a vertically oriented rotation axis Z. , Through the beads 9 arise above the separation plate 7 such areas of different inclination to the axis of rotation or to the horizontal H.
  • the angle of repose of a product to be processed is here understood to mean the angle at which the solids of the solid phase would accumulate in the product to be processed in a puffed-up mass relative to the horizontal.
  • this condition is fulfilled in particular if one considers the beads 9 in cross-section as circular segments with a radius R, wherein the radius R is selected as a function of the angle ⁇ 1 of the basic contour 8 to the horizontal H such that at minimal resulting Angle ⁇ deposited solid particles still slide off the separation plates 7 ( Fig. 2 . 4 ).
  • At least two or more tab-like spacers 10 are provided circumferentially distributed, which serve to space the separation plates axially to each other.
  • These spacers 10 follow in the radial direction the shape of the beads 9, that is, they are preferably wave-shaped themselves.
  • they could also have a punctiform contour. They can be embossed in the separation plates or applied to these from strip material. Their contour follows the "wave contour" of the separation plate itself.
  • the separating plates 7 and their beads 9 are further preferably designed such that in each case a lower conical envelope surface 8 'and an upper conical envelope surface 8' axially adjacent separating plate 7 in angle segments between circumferentially adjacent spacers 10 either just touch or with each other in cover are or are not in such a coincidence that each lower envelope surface 8 of each upper separator plate 7 is preferably above the respective upper of the envelope surface 8 'of the respective lower separator plate 7.
  • the wave-like separating plates 7 are designed in a particularly advantageous manner such that the separation and / or clarification task to be realized is not hindered.
  • the spacers 10 may be applied to the forming of the separation plate 7 in the waveform on this or possibly subsequently. Preferably, they do not extend radially all the way to the largest diameter of the separating plates 7, so that they do not act in the circumferential direction in this area entraining.
  • Fig. 4a . b show this with reference to two mutually offset in the circumferential direction sections through two stacked separation plates and Fig. 5a . b on the basis of detail enlargements Fig. 4a , b.

Description

Die Erfindung betrifft eine Zentrifuge nach dem Oberbegriff des Anspruches 1.The invention relates to a centrifuge according to the preamble of claim 1.

Ein Trenntellerpaket zeigen beispielsweise die DE 36 07 526 A1 oder die DE-OS 19 09 996 oder die US 2,599,629 .A Trenntellerpaket show, for example, the DE 36 07 526 A1 or the DE-OS 19 09 996 or the US 2,599,629 ,

Ein gattungsgemäßer Separator ist aus der US 694,736 bekannt.A generic separator is from the US 694,736 known.

Separatorenteller werden gängigerweise aus Edelstahl gefertigt. Sie sind in der Regel relativ dünn.Separator plates are commonly made of stainless steel. They are usually relatively thin.

Es ist bekannt, die Metalloberfläche des Standardmaterials der Trennteller vorzubehandeln, z.B. durch einen elektrischen oder manuellen Poliervorgang. Diese Maßnahmen wirken aber eher einer Verschmutzung der Trennteller entgegen.It is known to pretreat the metal surface of the standard material of the separator discs, e.g. by an electrical or manual polishing process. However, these measures rather counteract contamination of the separating plates.

Zum Stand der Technik wird ferner die WO 2005/005050 genannt, in der vorgeschlagen wird, die Trennteller zumindest abschnittsweise einer die Oberflächenenergie verändernden Oberflächenbehandlung zu unterziehen. So wird vorgeschlagen, dass die Trennteller aus einem Material bestehen, in das zumindest abschnittsweise ein die Oberflächenenergie gegenüber dem ersten Material veränderndes anderes Material eindiffundiert ist, z.B. mit Verfahren, welche Oberflächen behandelnden Verfahren der Halbleitertechnik ähnlich sind, d.h. z.B. mit Hilfe eines Plasmastrahles oder dgl.. Dieses Vorgehen hat sich an sich bewährt. Es besteht aber weiter der Bedarf nach einer konstruktiven Fortentwicklung der Trennteller insbesondere in Hinsicht auf ihre mechanische Stabilität.The prior art is further the WO 2005/005050 in which it is proposed to subject the separation plates at least in sections to a surface treatment which alters the surface energy. Thus, it is proposed that the separation plates consist of a material into which at least sections of the surface energy relative to the first material diffusing other material is diffused, for example, with processes which surface treatment methods of semiconductor technology are similar, ie for example with the aid of a plasma jet or the like. This procedure has proven itself. However, there is still a need for a constructive development of the separating plates, in particular with regard to their mechanical stability.

Es ist die Aufgabe der Erfindung, die mechanische Stabilität der Trennteller auf einfache konstruktive Weise zu erhöhen.It is the object of the invention to increase the mechanical stability of the separation plates in a simple constructive manner.

Die Erfindung löst diese Aufgabe durch die Gegenstände des Anspruchs 1.The invention solves this problem by the subject matters of claim 1.

Durch die Sicken werden die Trennteller in einfacher Weise stabilisiert, was sich wiederum vorteilhaft insbesondere im Betrieb auswirkt.By the beads, the separation plates are stabilized in a simple manner, which in turn has an advantageous effect in particular during operation.

Zwar sind derart mit umlaufenden Sicken konturierte Trennteller an sich bekannt, so aus der DE 163331 oder der US 694,736 . Diese Konstruktionen haben sich aber nicht durchgesetzt, da sie derart stark konturiert sind, dass sie die eigentliche Trenmaufgabe behindern und Ansatzflächen für Verschmutzungen bieten.Although so contoured with circumferential beads separation plate are known, so from the DE 163331 or the US 694,736 , However, these designs have not enforced because they are so strongly contoured that they impede the Trenmaufgabe and provide approach surfaces for contamination.

Um dies zu behindern, ist es nach einer besonders bevorzugten Variante vorteilhaft, wenn die Sicken in Anpassung an das zu verarbeitende Produkt P derart ausgelegt und an das zu verarbeitende Produkt angepasst sind, dass an der Oberfläche oder an der Unterfläche der Trennteller im Trenntellerstapel keine Winkel zur Horizontalen gegeben sind, die kleiner sind als der Böschungswinkel der abzutrennenden Feststoffphase des zu verarbeitenden Produktes. Derart wird wirksam verhindert, dass sich leicht Verschmutzungen an den Tellern ausbilden können, was bei stärker konturierten Sicken der Fall wäre.To hinder this, it is advantageous according to a particularly preferred variant, if the beads are adapted in adaptation to the processed product P and adapted to the product to be processed, that at the surface or on the lower surface of the separation plate in the separation plate stack no angle given to the horizontal, which are smaller than the angle of repose of the separated solid phase of the product to be processed. In this way it is effectively prevented that easily soiling can form on the plates, which would be the case with more contoured beads.

Umfangsverteilt sind vorzugsweise wenigstens zwei oder mehre Abstandshalter zwischen axial benachbarten Trenntellern vorgesehen, welche vorzugsweise laschenformig ausgebildet sind und derart, dass die Kontur der Abstandshalter der Kontur der Sicken folgt. Derart wird auch im Bereich der Sicken ein Mindestabstand zwischen den Tellern sichergestellt. Besonders vorteilhaft wirkt es sich in dieser Hinsicht aus, wenn die Abstandshalter vorzugsweise derart in axialer Richtung bemessen sind, dass sie in Richtung des jeweils axial benachbarten Trenntellers nach oben über die Sicken vorstehen.Circumferentially distributed at least two or more spacers between axially adjacent separation plates are preferably provided, which are preferably formed laschenformig and such that the contour of the spacers follows the contour of the beads. In this way, a minimum distance between the plates is ensured in the area of the beads. In this respect, it is particularly advantageous if the spacers are preferably dimensioned in the axial direction in such a way that they protrude upwards over the beads in the direction of the respectively axially adjacent separating plate.

Nach einer in dieser Hinsicht weiteren ganz bevorzugten Variante sind die Trennteller und ihre Sicken derart ausgebildet, dass jeweils eine untere kegelige Hüllfläche und eine oberen kegelige Hüllfläche axial benachbarter Trennteller in Winkelsegmenten zwischen in Umfangsrichtung benachbarten Abstandshaltern entweder gerade aneinander stoßen oder sich zwischen den Abstandshaltern nicht berühren, wobei die jeweils untere Hüllfläche des oberen Trenntellers vorzugsweise oberhalb der jeweils oberen der Hüllfläche des jeweils unteren Trenntellers liegt.After a further very preferred variant in this respect, the separation plates and their beads are formed such that each lower conical envelope surface and an upper conical envelope surface axially adjacent separation plate in angle segments between circumferentially adjacent spacers either just abut each other or do not touch between the spacers , Wherein the respective lower envelope surface of the upper separator plate preferably lies above the respective upper of the envelope surface of the respectively lower separator plate.

Die Abstandshalter können sich in bevorzugter Ausgestaltung radial erstrecken, sie können aber auch gebogen oder spiralförmig oder punktförmig ausgebildet sein.The spacers may extend radially in a preferred embodiment, but they may also be curved or formed spirally or punctiform.

Erfingdungsgemäß werden auch Trennteller für die Trenntellerpakete von Zentrifugen geschaffen, die sich zum Einsatz in Zentrifugen aller Art, so in Düsenseparatoren oder z.B. für einen Einsatz in diskontinuierlich Feststoffe entleerenden Separatoren oder für einen Einsatz in Dekantern mit einem Trenntellerpaket eignen.According to the invention, separation discs are also provided for the separator disc packs of centrifuges which are suitable for use in centrifuges of all kinds, such as in jet separators or e.g. suitable for use in discontinuous solids discharging separators or for use in decanters with a separator plate package.

Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the dependent claims.

Nachfolgend wird die Erfindung unter Bezug auf die Zeichnung anhand eines Ausführungsbeispiels näher beschrieben. Es zeigt:

Fig. 1
eine schematische Darstellung eines Schnittes durch einen Teilbereich eines Trenntellerstapels;
Fig. 2
einen Schnitt durch einen Teilbereich von zwei übereinander gestapelten Trenntellern;
Fig. 3
Prinzipskizzen von Düsenseparatoren, die sich für einen Einsatz erfindungsgemäßer Trennteller eignen;
Fig. 4a, b
zwei in Umfangsrichtung zueinander versetzte Schnitte durch eine Hälfte von zwei übereinander gestapelten Trenntellern; und
Fig. 5a, b
Ausschnittsvergrößerungen aus Fig. 4a, b.
The invention will be described in more detail with reference to the drawing with reference to an embodiment. It shows:
Fig. 1
a schematic representation of a section through a portion of a separator plate stack;
Fig. 2
a section through a portion of two stacked separator plates;
Fig. 3
Schematic diagrams of nozzle separators, which are suitable for use according to the invention separation plates;
Fig. 4a, b
two circumferentially offset sections through one half of two stacked separator plates; and
Fig. 5a, b
Section enlargements off Fig. 4a , b.

Fig. 3a und b zeigen jeweils eine schematische Darstellung einer einmal als Klärer (Fig. 3a) und einmal als Trenner (Fig.3b) ausgebildeten Schleudertrommel 1, in die jeweils ein Trenntellerpaket 2 eingesetzt ist. Die Funktion derartiger Düsenseparatoren mit einem Zulauf 3 und Abläufen 4, 5 bzw. 4, 5, 6 ist seit langem allgemein bekannt und bedarf daher keiner näheren Erläuterung. Fig. 3a and b each show a schematic representation of a once clarifier ( Fig. 3a ) and once as a separator ( 3b ) formed centrifugal drum 1, in each of which a Trenntellerpaket 2 is inserted. The function of such nozzle separators with an inlet 3 and processes 4, 5 and 4, 5, 6 has long been well known and therefore needs no further explanation.

Figur 1 zeigt eine schematische Darstellung eines Teilbereiches eines erfindungsgemäßen Trenntellerpakets 2 aus übereinander gestapelten Trenntellern 7, die vorzugsweise aus einem Stahl-Blechmaterial bestehen. FIG. 1 shows a schematic representation of a portion of a Trenntellerpakets invention 2 from stacked separation plates 7, which preferably consist of a steel sheet material.

Die Trennteller 7 können jeweils Öffnungen aufweisen, welche im Zusammenspiel einen Steigekanal ausbilden. Die Trennteller sind voneinander axial beabstandet angeordnet, so dass zwischen ihnen jeweils ein Spalt ausgebildet ist.The separation plates 7 may each have openings which form a climbing channel in interaction. The separating plates are arranged axially spaced from each other, so that in each case a gap is formed between them.

Die Trennteller 2 weisen eine konische Grundform 8 (siehe Fig. 2) auf, so dass auch ein im Wesentlichen konischer Tellerstapel 2 gebildet wird.The separation plates 2 have a conical basic shape 8 (see Fig. 2 ), so that a substantially conical plate stack 2 is formed.

Eine Abweichung von der konischen Grundform 8 der Trennteller entsteht durch wenigstens eine oder mehrere Sicken 9 im konischen Bereich der Trennteller 7.A deviation from the conical basic shape 8 of the separating plates is produced by at least one or more beads 9 in the conical region of the separating plates 7.

Vorzugsweise sind die Sicken 9 in den Trenntellern 2 in Umfangsrichtung ganz oder zumindest zwischen Abstandshaltern 10 umlaufend ausgebildet.Preferably, the beads 9 in the separation plates 2 in the circumferential direction completely or at least between spacers 10 circumferentially formed.

Die Sicken 9 stabilisieren die Trennteller 7 in einfacher Weise und vereinfachen damit insbesondere deren Handhabung, ohne sich nachteilig auf den Klär- oder Trennprozess auszuwirken.The beads 9 stabilize the separating plates 7 in a simple manner and thus in particular simplify their handling, without adversely affecting the clarification or separation process.

Vorzugsweise sind wenigstens zwei oder mehr, insbesondere fünf oder mehr, der umlaufenden Sicken 9 von innen nach außen im konischen Bereich der Trennteller 7 verteilt.Preferably, at least two or more, in particular five or more, of the circumferential beads 9 are distributed from the inside to the outside in the conical region of the separation plates 7.

Es ist denkbar, die Geometrie der Sicken 9 nach Art einer Wellenkontur dem Verlauf einer trigonometrischen Funktion nachzubilden.It is conceivable to simulate the geometry of the beads 9 in the manner of a wave contour to the course of a trigonometric function.

Vorzugsweise ist jeder Trennteller 7 über den gesamten konischen Bereich hinweg mit den Sicken 9 versehen.Each separating plate 7 is preferably provided with the beads 9 over the entire conical region.

Durch die Sicken 9 wird eine wellenartige Kontur mit ersten und zweiten Wendepunkten (W1; W2) gebildet, die bei einem Separator mit einer vertikal ausgerichteter Drehachse Z oberhalb (Wendepunkte W1) und unterhalb (Wendepunkte W2) der konischen Grundform bzw. -kontur 8 liegen. Durch die Sicken 9 entstehen oberhalb der Trennteller 7 derart Bereiche unterschiedlicher Neigung zur Drehachse bzw. zur Horizontalen H.The corrugations 9 form a wave-like contour with first and second inflection points (W1, W2) which lie above (inflection points W1) and below (inflection points W2) of the conical basic shape or contour 8 in the case of a separator with a vertically oriented rotation axis Z. , Through the beads 9 arise above the separation plate 7 such areas of different inclination to the axis of rotation or to the horizontal H.

Es ist besonders verteilhaft, die eine oder mehreren Sicken 9 derart auszulegen und an das zu verarbeitende Produkt P anzupassen, dass an der Oberfläche oder an der Unterfläche der Trennteller 2 keine Winkel zur Drehachse Z entstehen, die kleiner sind als der Böschungswinkel der abzutrennenden Feststoffphase des zu verarbeitenden Produktes P, damit sich keine Produktanlagerungen an den beiden Oberflächen der Trennteller 7 ausbilden. Unter dem Böschungswinkel eines zu verarbeitenden Produktes wird hier derjenige Winkel verstanden, unter dem sich die Feststoffe der Feststoffphase im zu verarbeitenden Produkt in einer geschütteten Anhäufung relativ zur Horizontalen anhäufen würden.It is particularly distributive to design the one or more beads 9 in such a way and to adapt to the product P to be processed that no angles to the rotation axis Z arise on the surface or on the lower surface of the separation plates 2, which are smaller than the angle of repose of the solid phase to be separated product P to be processed so that no product deposits on the two surfaces of the separation plates 7 form. The angle of repose of a product to be processed is here understood to mean the angle at which the solids of the solid phase would accumulate in the product to be processed in a puffed-up mass relative to the horizontal.

Nach einer Erkenntnis der Erfindung ist diese Bedingung insbesondere erfüllt, wenn man die Sicken 9 im Querschnitt als Kreissegmente mit einem Radius R betrachtet, wobei der Radius R in Abhängigkeit des Winkel β1 der Grundkontur 8 zur Horizontalen H derart gewählt ist, dass beim sich minimal ergebenden Winkel β abgeschiedene Feststoffteilchen noch von den Trenntellern 7 abgleiten (Fig. 2, 4).According to a finding of the invention, this condition is fulfilled in particular if one considers the beads 9 in cross-section as circular segments with a radius R, wherein the radius R is selected as a function of the angle β1 of the basic contour 8 to the horizontal H such that at minimal resulting Angle β deposited solid particles still slide off the separation plates 7 ( Fig. 2 . 4 ).

Wie weiter in Fig. 2 - aber auch Fig. 4a und 5a zu erkennen - sind umfangsverteilt wenigstens zwei oder mehr laschenartige Abstandshalter 10 vorgesehen, welche dazu dienen, die Trennteller axial zueinander zu beabstanden. Diese Abstandshalter 10 folgen in radialer Richtung der Form der Sicken 9, d.h., sie sind vorzugsweise selbst wellenförmig geformt. Vorzugsweise - aber nicht zwingend - erstrecken sie sich streifenartig in radialer Richtung. Alternativ oder ergänzend könnten sie auch eine punktförmige Kontur aufweisen. Sie können in die Trennteller eingeprägt sein oder auf diese aus Streifenmaterial aufgebracht sein. Ihre Kontur folgt der "Wellenkontur" der Trennteller an sich. Durch diese Abstandshalter 10 wird verhindert, dass die Wellenteller in axialer Richtung aneinander liegen.As in further Fig. 2 - but also Fig. 4a and 5a to be recognized - at least two or more tab-like spacers 10 are provided circumferentially distributed, which serve to space the separation plates axially to each other. These spacers 10 follow in the radial direction the shape of the beads 9, that is, they are preferably wave-shaped themselves. Preferably - but not necessarily - they extend in a strip-like manner in the radial direction. Alternatively or additionally, they could also have a punctiform contour. They can be embossed in the separation plates or applied to these from strip material. Their contour follows the "wave contour" of the separation plate itself. By these spacers 10 prevents the shaft plates are in the axial direction to each other.

Die Trennteller 7 und ihre Sicken 9 sind ferner vorzugsweise derart ausgebildet, dass sich jeweils eine untere kegelige Hüllfläche 8' und eine obere kegelige Hüllfläche 8' axial benachbarter Trennteller 7 in Winkelsegmenten zwischen in Umfangsrichtung benachbarten Abstandshaltern 10 entweder gerade eben berühren bzw. miteinander in Deckung sind oder aber derart nicht miteinander in Deckung sind, dass jeweils untere Hüllfläche 8 des jeweils oberen Trenntellers 7 vorzugsweise oberhalb der jeweils oberen der Hüllfläche 8' des jeweils unteren Trenntellers 7 liegt. Derart sind die wellenartigen Trennteller 7 in besonders vorteilhafter Weise derart ausgestaltet, dass die zu realisierende Trenn- und/oder Kläraufgabe nicht behindert wird. Die Abstandshalter 10 können vor dem Umformen der Trennteller 7 in die Wellenform auf diese aufgebracht werden oder ggf. nachträglich. Vorzugsweise erstrecken sie sich radial nicht ganz bis zum größten Durchmesser der Trennteller 7, so dass sie in diesem Bereich nicht in Umfangsrichtung mitnehmend wirken.The separating plates 7 and their beads 9 are further preferably designed such that in each case a lower conical envelope surface 8 'and an upper conical envelope surface 8' axially adjacent separating plate 7 in angle segments between circumferentially adjacent spacers 10 either just touch or with each other in cover are or are not in such a coincidence that each lower envelope surface 8 of each upper separator plate 7 is preferably above the respective upper of the envelope surface 8 'of the respective lower separator plate 7. In this way, the wave-like separating plates 7 are designed in a particularly advantageous manner such that the separation and / or clarification task to be realized is not hindered. The spacers 10 may be applied to the forming of the separation plate 7 in the waveform on this or possibly subsequently. Preferably, they do not extend radially all the way to the largest diameter of the separating plates 7, so that they do not act in the circumferential direction in this area entraining.

Fig. 4a, b zeigen dies anhand zweier in Umfangsrichtung zueinander versetzten Schnitten durch zwei übereinander gestapelte Trennteller und Fig. 5a, b anhand von Ausschnittsvergrößerungen aus Fig. 4a, b. Fig. 4a . b show this with reference to two mutually offset in the circumferential direction sections through two stacked separation plates and Fig. 5a . b on the basis of detail enlargements Fig. 4a , b.

Bezugszeichenreference numeral

Trommeldrum
11
TrenntellerpaketSeparator disc package
22
ZulaufIntake
33
Abläufeprocedures
4, 5, 64, 5, 6
Trenntellerseparator disc
77
Rundformround shape
88th
Sickenbeading
99
Abstandshalterspacer
1010
Winkelangle
β, β1β, β1
Radiusradius
RR
Horizontalehorizontal
HH
Drehachseaxis of rotation
ZZ
Wendepunkteturning points
W1, W2W1, W2

Claims (11)

  1. Centrifuge, in particular separator or solid bowl centrifuge, having a spinning drum in which a separate disc pack (2) of stacked separator discs (7) is arranged, spacers (10) being formed between axially adjacent separator discs, at least one or more of the separator discs (7) having at least one or more corrugations (9) running around wholly or sectionally in the circumferential direction, characterized in that the spacers are designed in such a way that their contour follows the wave contour of the separator discs, so that they keep the separator discs spaced apart axially from one another even in the area of the corrugations (9) outside the spacers (10).
  2. Centrifuge according to Claim 1, characterized in that the separator discs (7) have at least one region with a conical outline (8), from which the geometry of the separator discs (7) deviates as a result of the circumferential corrugations.
  3. Centrifuge according to Claim 1 or 2, characterized in that at least two or more of the circumferential corrugations (9) are distributed from the inside to the outside in the conical region of the separator discs (7).
  4. Centrifuge according to one of the preceding claims, which is designed to process a specific product P, characterized in that the corrugations (9) are designed to match the product P and are matched to the product to be processed in such a way that, on the upper surface or on the under surface of the separator disc (7) in the separator disc stack (2), no angle (β) to the horizontal (H) is provided which is smaller than the slope angle of the solid phase to be separated from the product to be processed.
  5. Centrifuge according to one of the preceding Claims 3 or 4, characterized in that five or more of the circumferential corrugations (9) are distributed from the inside to the outside in the conical region of the separator disc (7).
  6. Centrifuge according to one of the preceding claims, characterized in that the geometry of the corrugations (9) replicates the course of a trigonometric function in the manner of a wave contour.
  7. Centrifuge according to one of the preceding claims, characterized in that the corrugations (9) are formed as circular segments with a radius (R), the radius (R) being chosen as a function of the angle β1 of the conical outline (8) with respect to the horizontal (H) such that solid particles separated out at the minimum resulting angle β1 with respect to the axis of rotation (Z) still slide off the separator discs (7).
  8. Centrifuge according to one of the preceding claims, characterized in that at least two or more of the spacers (10) are provided distributed circumferentially, in that the spacers (10) are formed in the manner of lugs, and in that the contour of the spacers (10) follows the contour of the corrugations (9).
  9. Centrifuge according to one of the preceding claims, characterized in that the spacers (10) are dimensioned in the axial direction in such a way that they project upwards over the upper points of inflection of the corrugations (9) in the direction of the respective separator disc (7) that is adjacent upwards in the direction of the vertically oriented axis of rotation.
  10. Centrifuge according to one of the preceding Claims 2 - 9, characterized in that the separator discs (7) and their circumferential corrugations (9) are formed in such a way that in each case a lower conical enveloping surface (8) and an upper conical enveloping surface (8') of axially adjacent separator discs (7) in angular segments between spacers that are adjacent in the circumferential direction are either congruent with one another or else are not congruent with one another, in such a way that the respective lower enveloping surface (8) of the upper separator disc (7) is located above the respective upper enveloping surface (8') of the respective lower separator disc (7).
  11. Centrifuge according to one of the preceding claims, characterized in that the separator discs (7) consist of steel sheet.
EP08166801.4A 2007-10-17 2008-10-16 Centrifuge and separator disc Active EP2050505B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007049697 2007-10-17

Publications (3)

Publication Number Publication Date
EP2050505A2 EP2050505A2 (en) 2009-04-22
EP2050505A3 EP2050505A3 (en) 2010-01-06
EP2050505B1 true EP2050505B1 (en) 2016-04-06

Family

ID=40076833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166801.4A Active EP2050505B1 (en) 2007-10-17 2008-10-16 Centrifuge and separator disc

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EP (1) EP2050505B1 (en)
DE (1) DE102008051867A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050046A1 (en) 2011-05-02 2012-11-08 Gea Mechanical Equipment Gmbh centrifuge
DE102013101654A1 (en) 2013-02-20 2014-08-21 Gea Mechanical Equipment Gmbh Separator disc package
JP6286530B2 (en) 2014-03-27 2018-02-28 東京濾器株式会社 Oil separator
EP3231515B1 (en) 2016-04-13 2020-09-30 Alfa Laval Corporate AB Separating disc for centrifugal separator and disc package comprising such separating discs
KR20220125360A (en) * 2020-01-24 2022-09-14 미쯔비시 가꼬끼 가이샤 리미티드 Centrifuge device and separator plate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE163331C (en) *
US694736A (en) * 1902-01-04 1902-03-04 Nicholas W Gales Liner for centrifugal liquid-separators.
US2599629A (en) 1948-10-30 1952-06-10 Rca Corp Electron discharge device and associated circuit
SE321896B (en) 1968-02-29 1970-03-16 Alfa Laval Ab
DE3607526A1 (en) 1985-03-14 1987-09-10 Westfalia Separator Ag Centrifuge with a self-emptying centrifuge drum
JP4856540B2 (en) 2003-07-10 2012-01-18 ウエストファリア セパレーター アーゲー Centrifuge with separation disk laminate and separation disk
US7410457B2 (en) * 2003-08-08 2008-08-12 Westfalia Separator Ag Separator with a disc stack with rising channels and non-radial distributor channels

Also Published As

Publication number Publication date
EP2050505A2 (en) 2009-04-22
EP2050505A3 (en) 2010-01-06
DE102008051867A1 (en) 2009-04-23

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