EP2062650B1 - Centrifuge with a separator disc package and separator - Google Patents

Centrifuge with a separator disc package and separator Download PDF

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Publication number
EP2062650B1
EP2062650B1 EP08169370A EP08169370A EP2062650B1 EP 2062650 B1 EP2062650 B1 EP 2062650B1 EP 08169370 A EP08169370 A EP 08169370A EP 08169370 A EP08169370 A EP 08169370A EP 2062650 B1 EP2062650 B1 EP 2062650B1
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EP
European Patent Office
Prior art keywords
separator
centrifuge according
dormer
case
disc
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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.)
Not-in-force
Application number
EP08169370A
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German (de)
French (fr)
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EP2062650A2 (en
EP2062650A3 (en
Inventor
Kathrin Quiter
Thomas Bathelt
Thomas Kleimann
Andreas Penkl
Markus HÜLLMANN
Klaus Baalmann
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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Publication of EP2062650A2 publication Critical patent/EP2062650A2/en
Publication of EP2062650A3 publication Critical patent/EP2062650A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B7/00Elements of centrifuges
    • B04B7/08Rotary bowls
    • B04B7/12Inserts, e.g. armouring plates
    • B04B7/14Inserts, e.g. armouring plates for separating walls of conical shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20Centrifuges 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
    • B04B2001/2066Centrifuges 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 and a separation plate.
  • Separators with separator disc packs show the DE 36 07 526 A1 or the DE-OS 19 09 996 or the DE 10 2004 037 925 A ,
  • Separator plates are commonly made of stainless steel. They are usually made of a relatively thin sheet metal, have a conical shape and are combined at a central passage opening plate holders to plate stacks. By means of point or lug-shaped spacers they are axially spaced from each other, so that forms a separation gap between them. Rising channels, which enforce the plate packages usually axially parallel to the axis of rotation of the centrifuge, are used to supply a product to be processed in the gaps between the separation plates, where the product clarified in the centrifugal field of solids and where the liquid may also be in a light and a heavier liquid phase is separated.
  • the separating plates of the separating plate stack are provided, at least over an axial region of the separating plate stack or the entire separating plate stack, with one or more dormers each having an opening passing through the separating plate, the dormers and the openings form one or more flow channel (s) in the disk package, and the dormers are each formed as being formed in the conical separation plates at the top and protruding into the disk gap.
  • the dormers each as in the conical separating plate (in vertical orientation) introduced upward and projecting into the plate gap forms forms whose height increases radially from the inside to the outside and each having in their radially outer region of the opening.
  • This variant can be easily realized on the separation plates by embossing and cutting, drilling or punching in the region of the openings of the dormers.
  • FIG. 10a and 10b each show a schematic representation of a once clarifier ( Fig. 10a ) and once as a separator ( 10B ) 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. 3 shows a schematic representation of a half of a separation plate package according to the invention 2 from stacked conical separation plates 7, which preferably consist of a steel sheet material and in Fig. 1 and 2 are shown.
  • the Trenntellerwovene 2 are placed on a central and possibly contoured opening 15 on a correspondingly shaped plate holder (not shown here).
  • the separation plates 7 may each have one or more circumferentially distributed openings, which in interaction with the plate stack or separator plate package form at least one or more riser channels 8a, b,..., One of which Fig. 10b is indicated.
  • the separating plates 7 are arranged axially spaced from each other by means of spacers 9, so that between each of them a plate gap 14 is formed, which is particularly well in Fig. 7 can be seen.
  • the spacers 9 are here exemplified as radially extending tabs, which the separating plates 7 and thus also the separator plate column 14 in Divide sectors 10a, 10b, ..., which in each case again into a lying in operation - ie when rotating the Separatortrommel - behind the spacers half I and a lying in the direction of rotation before the spacers half II is subdivided.
  • one of the riser channels 8a, 8b is preferably arranged in each of the sectors 10, preferably - as in FIG Fig. 1 shown - viewed in the preferred direction of rotation U, arranged in the directly behind the spacers 9 half I.
  • the separating plates 7 are further provided with at least one region of the axial length or over the entire axial length or with vertical axis of rotation, the height of the separator plate stack each with one or more dormers 11, each having at least one opening 12 passing through the respective separation plate 7.
  • the dormers 11 are each formed as in the conical separating plate 7 in the vertical axis of rotation upwards introduced features whose height increases radially from the inside outwards and each having in their radially outermost region the opening 12, which - as in Fig. 4 and 5 to recognize, preferably the entire radially outer edge region of the dormers 11 forms.
  • the dormers 11 are sized and arranged offset in the stacked separation plates 7 to each other that form through the dormers 11 and the openings 12 and by their interaction the flow channels 13 ( Fig. 3 . 4 . 5 ), which pass through the Trenntellerver 2 or at least a portion of the separating plate 7 of the Trenntellervers 2 radially outwardly and open outward from the Trenntellervers 2.
  • a plurality of such flow channels 13 are formed in the separation plate package in the direction of the axis of rotation or in the vertical direction in the vertical axis of rotation ( Fig. 3, 5 ).
  • a plurality of dormers 11a, 11b, 11c which are distributed over the circumference, are preferably also formed in each separating plate 7, so that a plurality of flow channels are formed circumferentially distributed.
  • one of the dormers 11 a, 11 b, ... or one of the dormers and thus also one of the flow channels 13 is formed in each of the sectors 10.
  • the dormers are preferably in the sector half II , which lies in front of the spacers 9 in the direction of rotation U respectively.
  • the distribution of the dormers 11 is such that over the entire vertical height flow channels 13 are formed in Trenntellervers 2. But it is also conceivable to provide axially individual separating plate 7 without dormers 11.
  • a flat design of the dormers is advantageous so that the distance between the plates is not too large.
  • the separation plates 7 of the separation plate stack 2 are not formed the same, since the dormers 11 in the region of each flow channel 13 from the inside to the outside aligned openings 12 must form. Due to modern computer-controlled production methods, this offset from separating plate 7 to separating plate 7 introducing the dormers 11 but easily possible.
  • a short cut is introduced into the separating plates 7 and then or in front of them, the forms / dormers 11 are formed in the separating plates 7 by an embossing process.
  • the choice of the size of the openings 12 provides a simple way to influence the completion speed of the solid from the plate package (see Fig. 6 ).
  • FIGS. 7 and 8 illustrate that the dormers can either be rounded or roof-like with an upper edge 16 can be formed.
  • the heavy phase H which flows from the inside to the outside at the bottom of the plate, collects in the dormers 11 with the openings 12 and is guided through the flow channels 13 from inside to outside. It is advantageous if the dormers 11 have a radially increasing from the inside outward height.
  • the dormers 11 are preferably arranged or formed in the regions of the sectors 10 in which the heaviest phase of the largest flow is to be expected and where its effect is greatest.
  • Individual separation plates in the entire plate package can also have no dormers 11 and 12 openings.
  • the disk pack can also have no riser or riser channels on other radial position.
  • the dormers 11 and openings 12 are arranged on the respective first lower separating plate of a section with dormers 11 and openings radially in height of the riser channels.
  • the dormers 11 of the respective first lower separation plate in a section of separation plates with a dormer not more inside than 25% of the radial extent of the separation plate, preferably not further inside than 1/3 of the radial extent of the separation plate arranged to sufficient solids derive.
  • the dormers 11 of the respective first lower separating plate are arranged in a section of separating discs with a dormer not more outwardly than on 1 ⁇ 2 preferably 2/3 or more preferably 3 ⁇ 4 of the radial extent of the separating plate, so that a particularly good effect is given.
  • the dormers 11 are in each case relative to the respective conical separating plates 7, in which they are formed in front of upward and form upwardly protruding forms.

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  • Centrifugal Separators (AREA)

Abstract

The centrifuge has a separation disc stack (2) with stacked separator discs (7) arranged in a spinning drum, where the discs are axially spaced from each other by spacers such that a disc gap is formed between the discs. The discs are provided with dormers (11) over an axial area of the stack, where the dormers are provided with openings (12) for interspersing the discs. The dormers and the openings form flow channels (13) in the stack. The dormers are formed as characteristics that are upwardly brought into the discs and project into the disc gap.

Description

Die Erfindung betrifft eine Zentrifuge nach dem Oberbegriff des Anspruches 1 sowie einen Trennteller.The invention relates to a centrifuge according to the preamble of claim 1 and a separation plate.

Separatoren mit Trenntellerpaketen zeigen beispielsweise die DE 36 07 526 A1 oder die DE-OS 19 09 996 oder die DE 10 2004 037 925 A .Separators with separator disc packs, for example, show the DE 36 07 526 A1 or the DE-OS 19 09 996 or the DE 10 2004 037 925 A ,

Zum technologischen Hintergrund werden ferner die US 802 150 A , die US 25 99 619 A , die DE 664 383 A , die und die US 17 31 999 A genannt.The technological background will also be the US 802 150 A , the US 25 99 619 A , the DE 664 383 A , the and the US 17 31 999 A called.

Separatorenteller werden gängigerweise aus Edelstahl gefertigt. Sie sind in der Regel aus einem relativ dünnen Metallblech gefertigt, weisen eine konische Form auf und werden an einer zentrischen Durchgangsöffnung auf Tellerhaltern zu Tellerstapeln zusammengefaßt. Mittels punkt- oder laschenförmigen Abstandshaltern werden sie axial zueinander beabstandet, damit sich zwischen ihnen ein Trennspalt ausbildet. Steigekanäle, welche die Tellerpakete in der Regel axial parallel zur Drehachse der Zentrifuge durchsetzen, dienen zur Zuleitung eines zu verarbeitenden Produktes in die Spalte zwischen den Trenntellern, wo sich das Produkt im Zentrifugalfeld von Feststoffen geklärt und wo die Flüssigkeit ggf. auch in eine leichte und eine schwerere Flüssigkeitsphase getrennt wird.Separator plates are commonly made of stainless steel. They are usually made of a relatively thin sheet metal, have a conical shape and are combined at a central passage opening plate holders to plate stacks. By means of point or lug-shaped spacers they are axially spaced from each other, so that forms a separation gap between them. Rising channels, which enforce the plate packages usually axially parallel to the axis of rotation of the centrifuge, are used to supply a product to be processed in the gaps between the separation plates, where the product clarified in the centrifugal field of solids and where the liquid may also be in a light and a heavier liquid phase is separated.

Da die voneinander getrennten Phasen in den Trennspalten in verschiedenen bzw. sogar im wesentlichen einander entgegen gesetzte Richtungen strömen, kommt es beim Trenn- und/oder Klärvorgang u.U. zu einem Rückvermischen der bereits voneinander getrennten Phasen.Since the separate phases in the separation columns in different or even substantially opposite directions to flow, it comes in the separation and / or clarification u.U. to a back mixing of the already separated phases.

Es ist die Aufgabe der Erfindung, dieses Problem zu mindern.It is the object of the invention to reduce this problem.

Die Erfindung löst diese Aufgabe durch die Gegenstände der Ansprüche 1 und 20.The invention solves this problem by the subject matter of claims 1 and 20.

Nach dem Kennzeichen des Anspruchs 1 sind die Trennteller des Trenntellerstapels wenigstens über einen axialen Bereich des Trenntellerstapels oder den gesamten Trenntellerstapel hinweg mit einer oder mehreren Gauben versehen, die jeweils eine den Trennteller durchsetzende Öffnung aufweisen, wobei die Gauben und die Öffnungen einen oder mehrere Strömungskanal/-kanäle im Tellerpaket ausbilden und die Gauben sind jeweils als in die konischen Trennteller nach oben hin eingebrachte und in den Tellerspalt ragende Ausprägungen ausgebildet sind.According to the characterizing part of claim 1, the separating plates of the separating plate stack are provided, at least over an axial region of the separating plate stack or the entire separating plate stack, with one or more dormers each having an opening passing through the separating plate, the dormers and the openings form one or more flow channel (s) in the disk package, and the dormers are each formed as being formed in the conical separation plates at the top and protruding into the disk gap.

Derart wird auf einfache Weise ein großer Teil der schweren Phase direkt durch die Strömungskanäle abgeleitet, die insofern ergänzend vorzugsweise radial nach außen aus dem Trenntellerpaket führen, so dass auf besonders effektive Weise für eine Ableitung der schweren Phase radial nach außen gesorgt wird.Thus, in a simple manner, a large part of the heavy phase is discharged directly through the flow channels, which thus additionally preferably lead radially outward from the separator plate package, so that a discharge of the heavy phase is provided in a particularly effective manner radially outward.

Dabei sind die Gauben jeweils als in die konischen Trennteller (bei vertikaler Ausrichtung) nach oben hin eingebrachte und in den Tellerspalt ragende Ausprägungen ausgebildet, deren Höhe radial von innen nach außen hin zunimmt und die jeweils in ihrem radial äußeren Bereich die Öffnung aufweisen. Diese Variante lässt sich fertigungstechnisch einfach an den Trenntellern durch ein Prägen und einen Schnitt, ein Bohren oder Stanzen im Bereich der Öffnungen der Gauben realisieren.In this case, the dormers each as in the conical separating plate (in vertical orientation) introduced upward and projecting into the plate gap forms forms whose height increases radially from the inside to the outside and each having in their radially outer region of the opening. This variant can be easily realized on the separation plates by embossing and cutting, drilling or punching in the region of the openings of the dormers.

Dabei ist es zu Optimierung der Wirkung vorteilhaft, wenn die Gauben jeweils in den Bereichen der Trennteller ausgebildet sind, in denen im Tellerspalt die größte Strömung an schwerer Phase auftritt.It is advantageous for optimizing the effect when the dormers are each formed in the areas of the separation plates, in which the largest flow occurs in the plate gap in heavy phase.

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 perspektivische Ansicht eines erfindungsgemäßen Trenntellers;
Fig. 2
eine Draufsicht auf den Trennteller der Fig. 1;
Fig. 3
eine hälftige Schnittansicht eines Tellerspaltes;
Fig. 4
eine vergrößerte Schnittansicht eines Teilbereiches des Tellerstapels aus Fig. 3;
Fig. 5
eine vergrößerte Schnittansicht eines anderen Teilbereiches des Tel- lerstapels aus Fig. 3;
Fig. 6
eine Schnittansicht durch einen Trennspalt zwischen zwei Trenntel- lern zur Veranschaulichung der Wirkungsweise im Betrieb;
Fig. 7, 8
alternative Formen von Gauben an Trenntellern;
Fig. 9
eine Schnittansicht durch einen Abschnitt weiteren Tellerstapel; und
Fig. 10a, b
Prinzipskizzen bekannter Separatoren.
The invention will be described in more detail with reference to the drawing with reference to an embodiment. It shows:
Fig. 1
a perspective view of a separation plate according to the invention;
Fig. 2
a plan view of the separation plate of Fig. 1 ;
Fig. 3
a half-sectional view of a plate gap;
Fig. 4
an enlarged sectional view of a portion of the plate stack Fig. 3 ;
Fig. 5
an enlarged sectional view of another portion of the Telererstapels Fig. 3 ;
Fig. 6
a sectional view through a separating gap between two Trennel- learning to illustrate the mode of operation;
Fig. 7, 8
alternative forms of dormers on divider plates;
Fig. 9
a sectional view through a portion of another stack of plates; and
Fig. 10a, b
Schematic diagrams of known separators.

Fig. 10a und 10b zeigen jeweils eine schematische Darstellung einer einmal als Klärer (Fig. 10a) und einmal als Trenner (Fig.10b) 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. Die Trenntellerpakete der Fig. 1 bis 9 eigen sich insbesondere für derartige Separatoren mit zentrifugaler Drehachse D aber auch als Tellerstapel in Dekantem oder in anderen Zentrifugen. 10a and 10b each show a schematic representation of a once clarifier ( Fig. 10a ) and once as a separator ( 10B ) 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. The separator disc packs of Fig. 1 to 9 peculiar in particular for such separators with a centrifugal axis of rotation D but also as a plate stack in decanters or in other centrifuges.

Figur 3 zeigt eine schematische Darstellung einer Hälfte eines erfindungsgemäßen Trenntellerpakets 2 aus übereinander gestapelten konischen Trenntellern 7, die vorzugsweise aus einem Stahl-Blechmaterial bestehen und in Fig. 1 und 2 abgebildet sind. Die Trenntellerpakete 2 werden an einer zentrischen und ggf. konturierten Öffnung 15 auf einen korrespondierend geformten Tellerhalter aufgesetzt (hier nicht dargestellt). FIG. 3 shows a schematic representation of a half of a separation plate package according to the invention 2 from stacked conical separation plates 7, which preferably consist of a steel sheet material and in Fig. 1 and 2 are shown. The Trenntellerpakete 2 are placed on a central and possibly contoured opening 15 on a correspondingly shaped plate holder (not shown here).

Die Trennteller 7 können jeweils eine oder mehrere umfangsverteilte Öffnungen aufweisen, welche im Zusammenspiel im Tellerstapel bzw. Trenntellerpaket wenigstens einen oder mehrere Steigekanäle 8a, b, ... ausbilden, von denen einer in Fig. 10b angedeutet ist.The separation plates 7 may each have one or more circumferentially distributed openings, which in interaction with the plate stack or separator plate package form at least one or more riser channels 8a, b,..., One of which Fig. 10b is indicated.

Die Trennteller 7 sind mittels Abstandshaltern 9 voneinander axial beabstandet angeordnet, so dass zwischen ihnen jeweils ein Tellerspalt 14 ausgebildet ist, der besonders gut in Fig. 7 zu erkennen ist.The separating plates 7 are arranged axially spaced from each other by means of spacers 9, so that between each of them a plate gap 14 is formed, which is particularly well in Fig. 7 can be seen.

Die Abstandshalter 9 sind hier beispielhaft als sich radial erstreckende Laschen ausgebildet, welche die Trennteller 7 und damit auch die Trenntellerspalte 14 in Sektoren 10a, 10b, ... unterteilen, die jeweils wieder in eine im Betrieb - d.h. beim Drehen der Separatortrommel - hinter den Abstandshaltern liegende Hälfte I und eine in Drehrichtung vor den Abstandshaltern liegende Hälfte II unterteilbar ist.The spacers 9 are here exemplified as radially extending tabs, which the separating plates 7 and thus also the separator plate column 14 in Divide sectors 10a, 10b, ..., which in each case again into a lying in operation - ie when rotating the Separatortrommel - behind the spacers half I and a lying in the direction of rotation before the spacers half II is subdivided.

Dabei ist vorzugsweise in jedem der Sektoren 10 einer der Steigekanäle 8a, 8b angeordnet, und zwar vorzugsweise - wie in Fig. 1 dargestellt - in bevorzugter Drehrichtung U betrachtet, in der direkt hinter den Abstandshaltern 9 angeordneten Hälfte I.In this case, one of the riser channels 8a, 8b is preferably arranged in each of the sectors 10, preferably - as in FIG Fig. 1 shown - viewed in the preferred direction of rotation U, arranged in the directly behind the spacers 9 half I.

Die Trennteller 7 sind zumindest über einen Bereich der axialen Länge oder über die gesamte axiale Länge bzw. bei vertikaler Drehachse die Höhe des Trenntellerstapels ferner jeweils mit einer oder mehreren Gauben 11 versehen, welche jeweils wenigstens eine den jeweiligen Trennteller 7 durchsetzende Öffnung 12 aufweisen.The separating plates 7 are further provided with at least one region of the axial length or over the entire axial length or with vertical axis of rotation, the height of the separator plate stack each with one or more dormers 11, each having at least one opening 12 passing through the respective separation plate 7.

Die Gauben 11 sind jeweils als in die konischen Trennteller 7 bei vertikaler Drehachse nach oben hin eingebrachte Ausprägungen ausgebildet, deren Höhe radial von innen nach außen hin zunimmt und die jeweils in ihrem radial äußersten Bereich die Öffnung 12 aufweisen, welche - wie in Fig. 4 und 5 zu erkennen, vorzugsweise den gesamten radial äußeren Randbereich der Gauben 11 ausbildet.The dormers 11 are each formed as in the conical separating plate 7 in the vertical axis of rotation upwards introduced features whose height increases radially from the inside outwards and each having in their radially outermost region the opening 12, which - as in Fig. 4 and 5 to recognize, preferably the entire radially outer edge region of the dormers 11 forms.

Wie ferner besonders gut in Fig. 5 zu erkennen sind die Gauben 11 derart bemessen und in den übereinander liegenden Trenntellern 7 zueinander versetzt angeordnet, dass sich durch die Gauben 11 und die Öffnungen 12 bzw. durch deren Zusammenspiel die Strömungskanäle 13 ausbilden (Fig. 3, 4, 5), welche das Trenntellerpaket 2 oder wenigstens einen Teil des Trennteller 7 des Trenntellerpaketes 2 radial nach außen hin durchsetzen und nach außen aus dem Trenntellerpaket 2 münden.As also particularly good in Fig. 5 can be seen the dormers 11 are sized and arranged offset in the stacked separation plates 7 to each other that form through the dormers 11 and the openings 12 and by their interaction the flow channels 13 ( Fig. 3 . 4 . 5 ), which pass through the Trenntellerpaket 2 or at least a portion of the separating plate 7 of the Trenntellerpaketes 2 radially outwardly and open outward from the Trenntellerpaket 2.

Bei einem sich über eine größere Höhe erstreckendem Trenntellerpaket 2 sind in Richtung der Drehachse bzw. bei vertikaler Richtung in vertikaler Drehachse mehrere derartige Strömungskanäle 13 im Trenntellerpaket ausgebildet (Fig. 3, 5).In the case of a separation plate package 2 extending over a greater height, a plurality of such flow channels 13 are formed in the separation plate package in the direction of the axis of rotation or in the vertical direction in the vertical axis of rotation ( Fig. 3, 5 ).

Vorzugsweise sind zudem auch umfangsverteilt mehrere Gauben 11a, 11b, 11c, in jedem Trennteller 7 ausgebildet, so dass sich umfangsverteilt auch mehrere Strömungskanäle ausbilden. Insbesondere ist in jedem der Sektoren 10 eine der Gauben 11 a, 11 b, ... bzw. eine der Gauben und damit auch einer der Strömungskanäle 13 ausgebildet. Die Gauben liegen vorzugsweise in der Sektorhälfte II, die in Drehrichtung U jeweils vor den Abstandshaltern 9 liegt.In addition, a plurality of dormers 11a, 11b, 11c, which are distributed over the circumference, are preferably also formed in each separating plate 7, so that a plurality of flow channels are formed circumferentially distributed. In particular, one of the dormers 11 a, 11 b, ... or one of the dormers and thus also one of the flow channels 13 is formed in each of the sectors 10. The dormers are preferably in the sector half II , which lies in front of the spacers 9 in the direction of rotation U respectively.

Vorzugsweise ist die Verteilung der Gauben 11 derart, dass über die gesamte vertikale Höhe Strömungskanäle 13 im Trenntellerpaket 2 ausgebildet sind. Es ist aber auch denkbar, axial einzelne Trennteller 7 ohne Gauben 11 vorzusehen.Preferably, the distribution of the dormers 11 is such that over the entire vertical height flow channels 13 are formed in Trenntellerpaket 2. But it is also conceivable to provide axially individual separating plate 7 without dormers 11.

Es ist auch denkbar, dass in jedem Sektor 10 radial von innen nach außen mehr als eine Gaube 11 angeordnet ist (Fig. 9).It is also conceivable that more than one dormer 11 is arranged radially in each sector 10 from the inside to the outside ( Fig. 9 ).

Die Strömungskanäle 13 bei vertikaler Drehachse horizontal oder nur leicht geneigt vorzugsweise in einem Winkel α von weniger als 30° zur Horizontalen ausgerichtet. Eine flache Ausgestaltung der Gauben ist vorteilhaft, damit der Abstand zwischen den Tellern nicht zu groß wird.The flow channels 13 at a vertical axis of rotation horizontal or only slightly inclined, preferably at an angle α of less than 30 ° to the horizontal aligned. A flat design of the dormers is advantageous so that the distance between the plates is not too large.

Es sei darauf hingewiesen, dass die Trennteller 7 des Trenntellerstapels 2 nicht gleich ausgebildet sind, da die Gauben 11 im Bereich jedes Strömungskanals 13 von innen nach außen hin miteinander fluchtende Öffnungen 12 ausbilden müssen. Durch moderne rechnergesteuerte Fertigungsmethoden ist dieses von Trennteller 7 zu Trennteller 7 versetzte Einbringen der Gauben 11 aber problemlos möglich.It should be noted that the separation plates 7 of the separation plate stack 2 are not formed the same, since the dormers 11 in the region of each flow channel 13 from the inside to the outside aligned openings 12 must form. Due to modern computer-controlled production methods, this offset from separating plate 7 to separating plate 7 introducing the dormers 11 but easily possible.

Vorzugsweise wird im Bereich der zu bildenden Öffnung 12 ein kurzer Schnitt in die Trennteller 7 eingebracht und dann oder davor werden die Ausprägungen/Gauben 11 in den Trenntellern 7 durch einen Prägevorgang ausgebildet. Die Wahl der Größe der Öffnungen 12 bietet eine einfache Möglichkeit zur Beeinflussung der Abschlussgeschwindigkeit des Feststoffes aus dem Tellerpaket (siehe Fig. 6).Preferably, in the region of the opening 12 to be formed, a short cut is introduced into the separating plates 7 and then or in front of them, the forms / dormers 11 are formed in the separating plates 7 by an embossing process. The choice of the size of the openings 12 provides a simple way to influence the completion speed of the solid from the plate package (see Fig. 6 ).

Fig. 7 und 8 veranschaulichen, dass die Gauben entweder abgerundet oder aber dachartig mit einer oberen Kante 16 ausgebildet werden können. FIGS. 7 and 8 illustrate that the dormers can either be rounded or roof-like with an upper edge 16 can be formed.

Es ist zudem denkbar, die Öffnung 12 in den Trenntellern nur relativ klein auszubilden (Fig. 8), so dass sie sich nicht über den gesamten radial äußeren Randbereich der Gauben 11 erstrecken.It is also conceivable to form the opening 12 in the separation plates only relatively small ( Fig. 8 ), so that they do not extend over the entire radially outer edge region of the dormers 11.

Die schwere Phase H, welche an der Tellerunterseite von innen nach außen strömt, sammelt sich jeweils in den Gauben 11 mit den Öffnungen 12 und wird durch die Strömungskanäle 13 von innen nach außen geleitet. Dabei ist es vorteilhaft, wenn die Gauben 11 eine radial von innen nach außen zunehmende Höhe aufweisen.The heavy phase H, which flows from the inside to the outside at the bottom of the plate, collects in the dormers 11 with the openings 12 and is guided through the flow channels 13 from inside to outside. It is advantageous if the dormers 11 have a radially increasing from the inside outward height.

Die Gauben 11 werden vorzugsweise in den Bereichen der Sektoren 10 angeordnet bzw. ausgebildet, in denen mit der größten Strömung an schwerer Phase zu rechnen ist und wo ihre Wirkung am größten ist.The dormers 11 are preferably arranged or formed in the regions of the sectors 10 in which the heaviest phase of the largest flow is to be expected and where its effect is greatest.

Einzelne Trennteller im gesamten Tellerpaket können auch keine Gauben 11 und Öffnungen 12 aufweisen.Individual separation plates in the entire plate package can also have no dormers 11 and 12 openings.

Das Tellerpaket kann auch keinen Steigekanal oder Steigekanäle auf anderer radialer Lage aufweisen.The disk pack can also have no riser or riser channels on other radial position.

Vorzugsweise sind die Gauben 11 und Öffnungen 12 am jeweils ersten unteren Trennteller eines Abschnittes mit Gauben 11 und Öffnungen radial in Höhe der Steigekanäle angeordnet.Preferably, the dormers 11 and openings 12 are arranged on the respective first lower separating plate of a section with dormers 11 and openings radially in height of the riser channels.

Weiter bevorzugt sind die Gauben 11 des jeweils ersten unteren Trenntellers in einem Abschnitt von Trenntellern mit einer Gaube nicht weiter innen als auf 25% der radialen Erstreckung der Trennteller, vorzugsweise nicht weiter innen als 1/3 der radialen Erstreckung der Trennteller angeordnet, um genügend Feststoffe abzuleiten.More preferably, the dormers 11 of the respective first lower separation plate in a section of separation plates with a dormer not more inside than 25% of the radial extent of the separation plate, preferably not further inside than 1/3 of the radial extent of the separation plate arranged to sufficient solids derive.

Zudem sind die Gauben 11 des jeweils ersten unteren Trenntellers in einem Abschnitt von Trenntellern mit einer Gaube nicht weiter außen als auf ½ vorzugsweise auf 2/3 oder besonders bevorzugt auf ¾ der radialen Erstreckung des Trenntellers angeordnet, damit eine besonders gute Wirkung gegeben ist.In addition, the dormers 11 of the respective first lower separating plate are arranged in a section of separating discs with a dormer not more outwardly than on ½ preferably 2/3 or more preferably ¾ of the radial extent of the separating plate, so that a particularly good effect is given.

Die Gauben 11 stehen jeweils relativ zu den jeweiligen, konischen Trenntellern 7, in welchen sie ausgebildet sind, nach oben hin vor und bilden nach oben hin vorkragende Ausprägungen.The dormers 11 are in each case relative to the respective conical separating plates 7, in which they are formed in front of upward and form upwardly protruding forms.

In ihrem Zusammenspiel bilden sie den radial nach außen hin und sich vorzugsweise bis zum äußeren radialen Rand des Tellerpakets erstreckenden Strömungskanal aus.In their interaction, they form the radially outward and preferably up to the outer radial edge of the plate package extending flow channel.

Bezugszeichenreference numeral

Schleudertrommelcentrifugal drum
11
TrenntellerpaketSeparator disc package
22
ZulaufIntake
33
Abläufeprocedures
4, 5, 64, 5, 6
Trenntellerseparator disc
77
Steigekanälerising channels
8 a, b, ...8 a, b, ...
Abstandshalterspacer
99
Sektorensectors
10a, 10b, ...10a, 10b, ...
Hälftehalf
I, III, II
Gaubenbelieve
1111
Öffnungopening
1212
Kanälechannels
1313
Tellerspaltplate gap
1414
Öffnungopening
1515
Kanteedge
1616

Claims (20)

  1. Centrifuge, in particular separator or solid-jacket screw-type centrifuge, with a centrifugal drum having an axis of rotation D, in particular a vertical axis of rotation, the centrifugal drum (1) having arranged in it at least one separator disc stack (2) composed of stacked separator discs (7) which are spaced axially apart from one another by means of spacers (9), so as in each case to form a disc gap (14) between them, characterized in that the separator discs of the separator disc stack (2) are provided, at least over an axial region of the separator disc stack (2) or over the entire separator disc stack (2), with one or more dormer windows (11) which are in each case provided with at least one orifice (12) passing through the separator disc (7), the dormer windows (11) and the orifices (12) forming at least one flow duct (13) or a plurality of flow ducts (13) in the disc stack, and the dormer windows (11) being designed in each case as the stamped-out portions introduced upwardly into the conical separator discs (7) and projecting into the disc gap (14).
  2. Centrifuge according to the preceding claim, characterized in that the flow ducts (13) lead out of the separator disc stack radially outwards.
  3. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) have in each case a height increasing radially from the inside outwards.
  4. Centrifuge according to one of the preceding claims, characterized in that, in the case of a vertical axis of rotation, the flow ducts (13) are oriented horizontally or so as to be inclined at an angle α of less than 30° with respect to the horizontal.
  5. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) are designed in each case as stamped-out portions which are introduced into the conical separator disc (7) upwards and project into the disc gap (14) and the height of which increases radially from the inside outwards and which in each case have the orifice (12) in their radially outer region.
  6. Centrifuge according to one of the preceding claims, characterized in that the orifices (12) form the entire outer marginal region of the dormer window.
  7. Centrifuge according to one of the preceding claims, characterized in that the orifices (12) form only part of the outer marginal region of the dormer window.
  8. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) are dimensioned and, in the separator discs (7) lying one above the other, offset with respect to one another, in such a way as to form the flow ducts (13) which pass through the separator disc stack (2) or at least some of the separator discs (7) of the separator disc stack (2) radially outwards and issue from the separator disc stack (2) outwards.
  9. Centrifuge according to one of the preceding claims, characterized in that a plurality of flow ducts (13) are formed in the separator disc stack (2) one above the other in the direction of the axis of rotation.
  10. Centrifuge according to one of the preceding claims, characterized in that a plurality of dormer windows (11a, 11b, 11c) are formed, distributed circumferentially, in each separator disc (7), so that a plurality of flow ducts (13) are also formed, distributed circumferentially.
  11. Centrifuge according to one of the preceding claims, characterized in that the separator disc gaps are subdivided into sectors (10), one of the dormer windows (11) being formed in each of the sectors.
  12. Centrifuge according to one of the preceding claims, characterized in that, furthermore, a riser duct (8) is in each case formed in each of the sectors.
  13. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) have a rounded form.
  14. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) have a roof-like form with an edge (16).
  15. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) are formed in each case in those regions of the separator discs in which the greatest flow of heavy phase occurs in the disc gap (14).
  16. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) are arranged in the sector half which lies in front of the spacers (9) in the preferred direction of rotation of the drum.
  17. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) and orifices (12) are arranged on the in each case first lower separator disc of a portion with dormer windows (11) and orifices (12), radially level with the riser ducts.
  18. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) of the in each case first lower separator disc in a portion of separator discs with a dormer window are arranged no further inwards than at 25% of the radial extent of the separator discs, preferably no further inwards than at 1/3 of the radial extent of the separator discs.
  19. Centrifuge according to one of the preceding claims, characterized in that the dormer windows (11) of the in each case first lower separator disc in a portion of separator discs with a dormer window are arranged no further outwards than at ½, preferably at 2/3 or especially preferably at % of the radial extent of the separator disc.
  20. Separator disc for a centrifuge, in particular for a separator, characterized by a dormer window (11) having an orifice passing through the separator disc (7).
EP08169370A 2007-11-23 2008-11-18 Centrifuge with a separator disc package and separator Not-in-force EP2062650B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007056575A DE102007056575A1 (en) 2007-11-23 2007-11-23 Centrifuge with a separator plate package and separating plate

Publications (3)

Publication Number Publication Date
EP2062650A2 EP2062650A2 (en) 2009-05-27
EP2062650A3 EP2062650A3 (en) 2010-01-06
EP2062650B1 true EP2062650B1 (en) 2011-02-09

Family

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Application Number Title Priority Date Filing Date
EP08169370A Not-in-force EP2062650B1 (en) 2007-11-23 2008-11-18 Centrifuge with a separator disc package and separator

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EP (1) EP2062650B1 (en)
AT (1) ATE497839T1 (en)
DE (2) DE102007056575A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179317B (en) * 2011-02-28 2015-04-01 杜高升 Centrifugal oil purifying machine
DE102011050046A1 (en) * 2011-05-02 2012-11-08 Gea Mechanical Equipment Gmbh centrifuge
CN105233973B (en) * 2015-11-02 2017-11-24 迈安德集团有限公司 The graded desliming system and desliming process of a kind of MICA
CN105214854B (en) * 2015-11-02 2017-08-08 迈安德集团有限公司 A kind of micro-size fraction dry-discharge system for tailings and tailing dry-type emission technology
CN105233971B (en) * 2015-11-02 2017-10-24 迈安德集团有限公司 A kind of swash plate overflow pulp hierarchy system and ore pulp grading technology
CN105214833B (en) * 2015-11-02 2017-08-08 迈安德集团有限公司 A kind of cyclone overflow pulp hierarchy system and ore pulp grading technology
CN105234007B (en) * 2015-11-02 2017-10-17 迈安德集团有限公司 A kind of high speed disc dewaterer

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Publication number Priority date Publication date Assignee Title
US1731999A (en) * 1929-10-15 Cream separator
US802150A (en) * 1905-05-25 1905-10-17 Charles Nordstrom Centrifugal separator.
DE664383C (en) * 1935-01-19 1938-08-26 Melotte Ecremeuses Conical plate for centrifugal drums
NL92809C (en) * 1947-06-13
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
SE504094C2 (en) * 1995-03-06 1996-11-11 Tetra Laval Holdings & Finance Disc stack of centrifugal separator discs
DK1651352T3 (en) * 2003-08-08 2008-09-22 Westfalia Separator Gmbh Separator comprising a centrifugal drum with plate package

Also Published As

Publication number Publication date
DE102007056575A1 (en) 2009-05-28
ATE497839T1 (en) 2011-02-15
DE502008002550D1 (en) 2011-03-24
EP2062650A2 (en) 2009-05-27
EP2062650A3 (en) 2010-01-06

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