EP2424675B1 - Separator - Google Patents

Separator Download PDF

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Publication number
EP2424675B1
EP2424675B1 EP10716333.9A EP10716333A EP2424675B1 EP 2424675 B1 EP2424675 B1 EP 2424675B1 EP 10716333 A EP10716333 A EP 10716333A EP 2424675 B1 EP2424675 B1 EP 2424675B1
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EP
European Patent Office
Prior art keywords
separator
disk assembly
assembly section
separating
section
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EP10716333.9A
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German (de)
French (fr)
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EP2424675A1 (en
Inventor
Wilfried Mackel
Helga Tietz
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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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
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
    • 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

Definitions

  • the invention relates to a separator according to the preamble of claim 1.
  • Generic separators are from the DE 195 08 334 A1 and the DD 288 322 A5 known.
  • Another such construction is from the DE-AS 1 141 951 known.
  • This document shows a separator with a centrifugal drum into which a separating plate package is inserted, the separating plate package being divided into two separating plate package sections below and above this separating plate by a separating plate which has a larger diameter than the other separating plates.
  • a product to be processed is fed through a feed in the drum shaft and enters the separation chamber via a distributor. There it in turn enters a riser channel of the separator plate package, which extends over the entire height of the separator plate package.
  • the centrifugal material entering the separation chamber is freed from the main part of the sludge in the space below the separation plate, which forms a sludge cushion on the circumference of the separation chamber.
  • the heavy liquid is prevented by the sludge pad from stepping around the outer edge of the larger diameter separating plate.
  • the remaining light liquid is separated off and collected in the upper separator plate section.
  • the separated heavy liquid is discharged from the separation chamber through a channel with a larger diameter and the separated light liquid through another channel with a smaller diameter of the centrifugal drum.
  • the position of the separation plate with a larger diameter can be varied depending on the application in the separation chamber. According to a preferred embodiment, it is approximately at the height of piston slide openings for discharging solid matter from the centrifugal drum.
  • the invention has the task of optimizing the separating and clarifying action in a simple manner compared to the generic centrifuge.
  • each of these sections can be optimally designed with regard to the respective task, for example with regard to the separating gap width or the separating plate and tab geometry.
  • the lower separating plate package section is designed as the separating device and the upper separating plate packet section as the clarifying device, in order first to separate the lighter liquid phase from the centrifuged material to be processed and to then separate the remaining solids in the separating plate packet section, which acts exclusively as a clarifying device.
  • the separating plate stack is sealed radially inwards in this area, which can be implemented in a variety of ways.
  • a separating plate package 2 made up of a plurality of separating plates 3 is arranged concentrically to the axis of rotation D.
  • the separating plates 3 have a conical shape, are stacked axially one above the other and are spaced apart by means of spacers (tabs and the like), not shown here.
  • the separating plate package 2 is held directly or via a holder on a distributor shaft 4 of a distributor 5 which can be rotated during operation and is secured against rotation relative to the latter.
  • the separator plate package 2 has a lower separator plate section 6 made of stacked lower separator plates 3a and an upper separator plate section 7 made of upper separator plates 3b, the lower separator plate section 6 and the upper separator plate section 7 being provided with a separating plate 3c which has a larger diameter than the other separating plates 3a , 3b and here also a greater thickness or wall thickness are separated from one another in the axial direction.
  • the lower separator plate section 6 is designed as a separating device for separating two liquid phases L1, L2 and the upper separating plate section 7 as a clarifying device for clarifying one of the liquid phases L2 from solids S.
  • the centrifuged material to be clarified - in particular milk - is fed into the rotating system through a central inlet pipe 8 which does not rotate during operation in the region of the distributor 5.
  • the distributor 5 has distributor channels 9 which open below the corresponding riser channels 10 in the lower separating plate package section 6 into the separating space.
  • the rising channels 10 lie on a first, inner radius R1.
  • the two liquid phases L1, L2 of different specific weights are separated from one another (in the case of milk, cream L1 and skim milk L2).
  • the liquid phase L2 with the higher specific weight - in the case of milk, the skimmed milk - on the other hand, is passed through one or more riser channels 14, which advantageously pass through the lower separator plate section 6, the separator plate 3c of larger diameter and the upper separator plate section 7.
  • the one or more riser channels 14 in the upper separator plate section 7 lie on a larger radius R2 than the one or more riser channels 10 in the lower separator plate section 6.
  • the clarified skimmed milk L1 is passed through one or more discharge channels 15 passing through the upper separating plate package section 7 into a second peeling chamber (not shown here) and from there with a second peeling disc (not shown here) from the rotating system.
  • solids are discharged discontinuously through solids discharge openings 18, which are preceded by a piston valve 19.
  • a further solid phase S can be discharged via a separating plate (not shown here) arranged vertically above the separating plate compact 2 through a third peeling chamber (not shown here) with a third peeling disc.
  • An arrangement can also be used to control the piston slide 19 when no more liquid L2 is drained off through the third peeling disc then present.
  • the upper separating plate package section 7 has the special feature that the individual separating plates 3b of this separating plate package are sealed axially relative to one another in an area lying radially inward to the one or more discharge channels for the liquid phase L2 (as the clarified skimmed milk, if applicable), so that none Liquid can flow from the upper separating plate packet section 7 into the discharge channel 11 or pipes lying radially inside to the sealed area and thus into the first peeling chamber.
  • the 2a to 2d each show by way of example three separating plates 3b, each consisting of an inner separating plate section 30 which is oriented perpendicular to the axis of rotation D and an outer - conical - separating plate section 31 which encloses an angle ⁇ with the axis of rotation D.
  • the separating plates 3b of the upper separating plate packet section 7 are sealed relative to one another in their radially inner separating plate section 30 by means of seals, in particular sealing rings 23 ( 2a to 2c ).
  • the seals can be in the form of flat seals 23a with a preferably rectangular cross section ( Fig. 2a ) be designed or as seals with a different, preferably round or elliptical cross-section ( 2b, 2c ).
  • the seals 23 are arranged in the plate gaps 25 between vertically adjacent separating plates 3b of the upper separating plate package section 7. They are preferably designed as circumferential sealing rings. However, it is also conceivable to arrange only ring segments as seals, for example, in the area between spacer plates of axially adjacent separating plates.
  • a particularly good sealing effect is achieved in that the seals 23 are introduced in correspondingly shaped receiving grooves 24 which are formed in the separating plates. To Fig. 2b align these receiving grooves 24 in the vertical direction. To Fig. 2c on the other hand, provision is made for the receiving grooves (ring grooves) 24 to be radially offset from one another in vertically superimposed separating plates 3b, so that the seals in vertically successive separating plate gaps 25 between adjacent separating plates 3b each lie on different radii.
  • the sealing radially inwards is not achieved by separate seals, but rather in that the vertical adjacent separating plates are in each case directly adjacent to each other in sections, for example in a conical steep area 32 in which the conicity angle ⁇ is significantly smaller than the conicity angle ⁇ to the axis of rotation D. , so that the adjacent separating plates 3b touch each other directly in this area.
  • the separating gaps 25 between vertically adjacent separator plates 3a preferably have a smaller distance than in the upper separator plate section 7.
  • ⁇ b> ⁇ u> reference number ⁇ //> ⁇ /b> Centrifugal drum 1 Plate pack 2nd Plate 3, 3a, 3b, 3c Distribution body 4th Distributor 5 lower separator plate section 6 upper separator plate section 7 Inlet pipe 8th Distribution channel 9 Riser 10th Discharge channel 11 Risers 14 Drainage channels 15 Solid discharge openings 18th Spool 19th Seals 23 Gaskets 23a Grooves 24th Separation plate column 25th Separating plate sections 30, 31 Steep area 32 Radii R1, R2, Axis of rotation D Liquid phase L1, L2 Solid phase S

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  • Centrifugal Separators (AREA)

Description

Die Erfindung betrifft einen Separator nach dem Oberbegriff des Anspruchs 1.The invention relates to a separator according to the preamble of claim 1.

Gattungsgemäße Separatoren sind aus der DE 195 08 334 A1 und der DD 288 322 A5 bekannt.Generic separators are from the DE 195 08 334 A1 and the DD 288 322 A5 known.

Eine weitere derartige Konstruktion ist aus der DE-AS 1 141 951 bekannt. Diese Schrift zeigt einen Separator mit einer Schleudertrommel, in die ein Trenntellerpaket eingesetzt ist, wobei das Trenntellerpaket durch einen Trennteller, der einen größeren Durchmesser als die anderen Trennteller aufweist, in zwei Trenntellerpaketabschnitte unterhalb und oberhalb dieses Trenntellers unterteilt ist. Ein zu verarbeitendes Produkt wird durch eine Zuführung in der Trommelwelle zugeleitet und tritt über einen Verteiler in die Trennkammer ein. Dort tritt es wiederum in einen Steigekanal des Trenntellerpakets ein, der sich über die gesamte Höhe des Trenntellerpakets erstreckt. Das in die Trennkammer eintretende Schleudergut wird in dem Raum unterhalb des Trenntellers vom Hauptteil des Schlammes befreit, der am Umfang der Trennkammer ein Schlammkissen bildet. Die schwere Flüssigkeit wird durch das Schlammkissen daran gehindert, um den Außenrand des Trenntellers mit größerem Durchmesser herumzutreten. Im oberen Trenntellerpaketabschnitt wird die übrige leichte Flüssigkeit abgetrennt und gesammelt. Die abgetrennte schwere Flüssigkeit wird durch einen Kanal an einem größeren Durchmesser und die abgetrennte leichte Flüssigkeit durch einen weiteren Kanal an einem kleineren Durchmesser der Schleudertrommel aus der Trennkammer abgeführt.Another such construction is from the DE-AS 1 141 951 known. This document shows a separator with a centrifugal drum into which a separating plate package is inserted, the separating plate package being divided into two separating plate package sections below and above this separating plate by a separating plate which has a larger diameter than the other separating plates. A product to be processed is fed through a feed in the drum shaft and enters the separation chamber via a distributor. There it in turn enters a riser channel of the separator plate package, which extends over the entire height of the separator plate package. The centrifugal material entering the separation chamber is freed from the main part of the sludge in the space below the separation plate, which forms a sludge cushion on the circumference of the separation chamber. The heavy liquid is prevented by the sludge pad from stepping around the outer edge of the larger diameter separating plate. The remaining light liquid is separated off and collected in the upper separator plate section. The separated heavy liquid is discharged from the separation chamber through a channel with a larger diameter and the separated light liquid through another channel with a smaller diameter of the centrifugal drum.

Die Position des Trenntellers mit größerem Durchmesser kann je nach Anwendungsfall in der Trennkammer variiert werden. Nach einem bevorzugten Ausführungsbeispiel liegt sie ungefähr in der Höhe von Kolbenschieberöffnungen zur Ableitung von Feststoff aus der Schleudertrommel.The position of the separation plate with a larger diameter can be varied depending on the application in the separation chamber. According to a preferred embodiment, it is approximately at the height of piston slide openings for discharging solid matter from the centrifugal drum.

Zum Stand der Technik seien noch die US 2 487 364 und die GB 206 723 sowie die US 50 52 996 A und die US 993 791 A genannt.The state of the art are still US 2,487,364 and the GB 206 723 as well as the US 50 52 996 A. and the US 993 791 A. called.

Die Erfindung hat ausgehend von dem eingangsgenannten Stand der Technik die Aufgabe, die Trenn- und Klärwirkung gegenüber der gattungsgemäßen Zentrifuge auf einfache Weise zu optimieren.Starting from the prior art mentioned at the outset, the invention has the task of optimizing the separating and clarifying action in a simple manner compared to the generic centrifuge.

Die Erfindung löst diese Aufgabe durch den Gegenstand des Anspruches 1.The invention solves this problem by the subject matter of claim 1.

Durch die Unterteilung des Trenntellerpaktes in Trenntellerpaketabschnitte kann jeder dieser Abschnitt beispielsweise in Hinsicht auf die Trennspaltbreite oder die Trennteller- und Laschengeometrie optimal in Hinsicht auf die jeweilige Aufgabe ausgelegt werden.By dividing the separating plate package into separating plate package sections, each of these sections can be optimally designed with regard to the respective task, for example with regard to the separating gap width or the separating plate and tab geometry.

Dabei ist es zweckmäßig, wenn der untere Trenntellerpaketabschnitt als die Trenneinrichtung und der obere Trenntellerpaketabschnitt als die Kläreinrichtung ausgelegt ist, um zunächst die leichtere Flüssigkeitsphase aus dem zu verarbeitenden Schleudergut abzutrennen und um sodann im ausschließlich als Kläreinrichtung wirkenden Trenntellerpaketabschnitt die restlichen Feststoffe abzutrennen.It is expedient if the lower separating plate package section is designed as the separating device and the upper separating plate packet section as the clarifying device, in order first to separate the lighter liquid phase from the centrifuged material to be processed and to then separate the remaining solids in the separating plate packet section, which acts exclusively as a clarifying device.

Um eine Rückvermischung mit der leichteren Flüssigkeitsphase in dem ausschließlich als Kläreinrichtung wirkenden Trenntellerpaketabschnitt zu verhindern, ist es besonders vorteilhaft, dass der Trenntellerstapel in diesem Bereich radial nach innen hin abgedichtet ist, was konstruktiv auf verschiedenste Weise realisierbar ist.In order to prevent backmixing with the lighter liquid phase in the separating plate package section, which acts exclusively as a clarifying device, it is particularly advantageous that the separating plate stack is sealed radially inwards in this area, which can be implemented in a variety of ways.

Vorteilhafte Ausgestaltungen sind den übrigen Unteransprüchen zu entnehmen.Advantageous refinements can be found in the remaining subclaims.

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

Figur 1
einen Schnitt durch einen Teilbereich einer Schleudertrommel eines erfindungsgemäßen Separators; und
Fig. 2a-d
schematisierte Schnittdarstellungen innerer Abschnitte von Trenntellerpakten zum Einbau in eine Schleudertrommel der Figur 1.
The invention is described in more detail below with reference to the drawing using an exemplary embodiment. It shows:
Figure 1
a section through a portion of a centrifugal drum of a separator according to the invention; and
2a-d
Schematic sectional views of inner sections of separating plate packs for installation in a centrifugal drum Figure 1 .

In der in Figur 1 dargestellten Schleudertrommel 1 mit vertikaler Drehachse D ist ein Trenntellerpaket 2 aus einer Vielzahl von Trenntellern 3 konzentrisch zur Drehachse D angeordnet.In the in Figure 1 The centrifugal drum 1 shown with the vertical axis of rotation D, a separating plate package 2 made up of a plurality of separating plates 3 is arranged concentrically to the axis of rotation D.

Die Trennteller 3 weisen eine konische Form auf, sind axial übereinander gestapelt und mittels hier nicht dargestellten Abstandshaltern (Laschen und dgl.) voneinander beabstandet.The separating plates 3 have a conical shape, are stacked axially one above the other and are spaced apart by means of spacers (tabs and the like), not shown here.

Das Trenntellerpaket 2 ist direkt oder über eine Halterung an einem Verteilerschaft 4 eines im Betrieb drehbaren Verteilers 5 relativ zu diesem verdrehsicher gehalten.The separating plate package 2 is held directly or via a holder on a distributor shaft 4 of a distributor 5 which can be rotated during operation and is secured against rotation relative to the latter.

Das Trenntellerpaket 2 weist einen unteren Trenntellerpaketabschnitt 6 aus übereinander gestapelten unteren Trenntellern 3a auf sowie einen oberen Trenntellerpaketabschnitt 7 aus oberen Trenntellern 3b, wobei der untere Trenntellerpaketabschnitt 6 und der obere Trenntellerpaketabschnitt 7 durch einen Trennteller 3c, der einen größeren Durchmesser aufweist als die übrigen Trennteller 3a, 3b sowie hier auch eine größere Dicke bzw. Wandstärke, in axialer Richtung voneinander getrennt sind. Dabei ist der untere Trenntellerpaketabschnitt 6 als Trenneinrichtung zum Trennen zweier Flüssigkeitsphasen L1, L2 ausgelegt und der obere Trenntellerpaketabschnitt 7 als Kläreinrichtung zum Klären einer der Flüssigkeitsphasen L2 von Feststoffen S.The separator plate package 2 has a lower separator plate section 6 made of stacked lower separator plates 3a and an upper separator plate section 7 made of upper separator plates 3b, the lower separator plate section 6 and the upper separator plate section 7 being provided with a separating plate 3c which has a larger diameter than the other separating plates 3a , 3b and here also a greater thickness or wall thickness are separated from one another in the axial direction. The lower separator plate section 6 is designed as a separating device for separating two liquid phases L1, L2 and the upper separating plate section 7 as a clarifying device for clarifying one of the liquid phases L2 from solids S.

Im Betrieb wird das zu klärende Schleudergut - insbesondere Milch - durch ein sich im Betrieb nicht drehendes, zentrisches Zulaufrohr 8 im Bereich des Verteilers 5 in das sich drehende System geleitet. Der Verteiler 5 weist Verteilerkanäle 9 auf, die unterhalb korrespondierender Steigekanäle 10 im unteren Trenntellerpaketabschnitt 6 in den Trennraum münden. Die Steigekanäle 10 liegen auf einem ersten, inneren Radius R1.In operation, the centrifuged material to be clarified - in particular milk - is fed into the rotating system through a central inlet pipe 8 which does not rotate during operation in the region of the distributor 5. The distributor 5 has distributor channels 9 which open below the corresponding riser channels 10 in the lower separating plate package section 6 into the separating space. The rising channels 10 lie on a first, inner radius R1.

Im unteren Trenntellerpaketabschnitt 6 werden die zwei Flüssigkeitsphasen L1, L2 unterschiedlichen spezifischen Gewichts voneinander getrennt (im Falle von Milch Rahm L1 und Magermilch L2).In the lower separating plate package section 6, the two liquid phases L1, L2 of different specific weights are separated from one another (in the case of milk, cream L1 and skim milk L2).

Die Flüssigkeitsphase L1 mit dem niedrigeren spezifischen Gewicht - im Fall von Milch der Rahm - wird nach innen hin durch einen Ableitungskanal 11 in eine erste Schälkammer (hier nicht dargestellt) und von dort mit einer ersten Schälscheibe (hier nicht dargestellt) aus dem rotierenden System geleitet.The liquid phase L1 with the lower specific weight - in the case of milk, the cream - is guided inwards through a discharge channel 11 into a first peeling chamber (not shown here) and from there with a first peeling disc (not shown here) from the rotating system .

Die Flüssigkeitsphase L2 mit dem höheren spezifischen Gewicht - im Falle von Milch die Magermilch - wird dagegen durch in einen oder mehrere Steigekanäle 14 geleitet, welche vorteilhaft den unteren Trenntellerpaketabschnitt 6, den Trennteller 3c größeren Durchmessers und den oberen Trenntellerpaketabschnitt 7 durchsetzen. Der oder die Steigekanäle 14 im oberen Trenntellerpaketabschnitt 7 liegen auf einem größeren Radius R2 als der oder die Steigekanäle 10 im unteren Trenntellerpaketabschnitt 6.The liquid phase L2 with the higher specific weight - in the case of milk, the skimmed milk - on the other hand, is passed through one or more riser channels 14, which advantageously pass through the lower separator plate section 6, the separator plate 3c of larger diameter and the upper separator plate section 7. The one or more riser channels 14 in the upper separator plate section 7 lie on a larger radius R2 than the one or more riser channels 10 in the lower separator plate section 6.

Im oberen Trenntellerpaketabschnitt 7 erfolgt eine Klärung der Flüssigkeitsphase L2 - bei Milch der Magermilch - von Feststoffen.In the upper separating plate package section 7, the liquid phase L2 - in the case of milk of skimmed milk - of solids is clarified.

Die geklärte Magermilch L1 wird durch einen oder mehrere den oberen Trenntellerpaketabschnitt 7 durchsetzende Ableitungskanäle 15 in eine zweite Schälkammer (hier nicht dargestellt) und von dort mit einer zweiten Schälscheibe (hier nicht dargestellt) aus dem rotierenden System geleitet.The clarified skimmed milk L1 is passed through one or more discharge channels 15 passing through the upper separating plate package section 7 into a second peeling chamber (not shown here) and from there with a second peeling disc (not shown here) from the rotating system.

Die Feststoffableitung erfolgt dagegen hier diskontinuierlich durch Feststoffaustragsöffnungen 18, denen ein Kolbenschieber 19 vorgeschaltet ist.In contrast, the solids are discharged discontinuously through solids discharge openings 18, which are preceded by a piston valve 19.

Optional kann eine weitere Feststoffphase S über einen vertikal oberhalb des Trenntellerpaktes 2 angeordneten Scheideteller (hier nicht dargestellt) durch eine dritte Schälkammer (hier nicht dargestellt) mit einer dritten Schälscheibe abgeleitet werden. Eine Anordnung kann auch dazu genutzt werden, um den Kolbenschieber 19 dann anzusteuern, wenn keine Flüssigkeit L2 mehr durch die dann vorhandene dritte Schälscheibe abgeleitet wird.Optionally, a further solid phase S can be discharged via a separating plate (not shown here) arranged vertically above the separating plate compact 2 through a third peeling chamber (not shown here) with a third peeling disc. An arrangement can also be used to control the piston slide 19 when no more liquid L2 is drained off through the third peeling disc then present.

Der obere Trenntellerpaketabschnitt 7 weist die Besonderheit auf, dass die einzelnen Trennteller 3b dieses Trenntellerpaketes in einem radial innen zu dem einen oder den mehreren Ableitungskanälen für die Flüssigkeitsphase L2 (als ggf. die geklärte Magermilch) liegenden Bereich axial relativ zueinander abgedichtet sind, so dass keine Flüssigkeit aus dem oberen Trenntellerpaketabschnitt 7 in den oder die radial innen zum abgedichteten Bereich liegenden Ableitungskanäle 11 und damit in die erste Schälkammer fließen kann.The upper separating plate package section 7 has the special feature that the individual separating plates 3b of this separating plate package are sealed axially relative to one another in an area lying radially inward to the one or more discharge channels for the liquid phase L2 (as the clarified skimmed milk, if applicable), so that none Liquid can flow from the upper separating plate packet section 7 into the discharge channel 11 or pipes lying radially inside to the sealed area and thus into the first peeling chamber.

Wie aus Fig. 2 ersichtlich, kann die Abdichtung des oberen Trenntellerpaketabschnitts 7 radial nach innen hin auf verschiedene Weise erfolgen.How out Fig. 2 can be seen, the sealing of the upper separator plate section 7 can take place radially inwards in various ways.

Die Fig. 2a bis 2d zeigen jeweils beispielhaft drei Trennteller 3b, die jeweils aus einem inneren Trenntellerabschnitt 30 bestehen, der senkrecht zur Drehachse D ausgerichtet ist und einem äußeren - konischen - Trenntellerabschnitt 31, der einen Winkel α mit der Drehachse D einschließt.The 2a to 2d each show by way of example three separating plates 3b, each consisting of an inner separating plate section 30 which is oriented perpendicular to the axis of rotation D and an outer - conical - separating plate section 31 which encloses an angle α with the axis of rotation D.

Nach einer ersten Variante sind die Trennteller 3b des oberen Trenntellerpaketabschnitts 7 in ihrem radial inneren Trenntellerabschnitt 30 mittels Dichtungen, insbesondere Dichtringen 23, relativ zueinander abgedichtet (Fig. 2a bis 2c).According to a first variant, the separating plates 3b of the upper separating plate packet section 7 are sealed relative to one another in their radially inner separating plate section 30 by means of seals, in particular sealing rings 23 ( 2a to 2c ).

Die Dichtungen können können als Flachdichtungen 23a mit einem vorzugsweise rechteckigen Querschnitt (Fig. 2a) ausgestaltet sein oder als Dichtungen mit einem anderen, vorzugsweise runden oder elliptischen Querschnitt (Fig. 2b, 2c).The seals can be in the form of flat seals 23a with a preferably rectangular cross section ( Fig. 2a ) be designed or as seals with a different, preferably round or elliptical cross-section ( 2b, 2c ).

Die Dichtungen 23 werden in den Tellerspalten 25 zwischen vertikal benachbarten Trenntellern 3b des oberen Trenntellerpaketabschnittes 7 angeordnet. Sie werden vorzugsweise als umlaufende Dichtringe ausgebildet. Denkbar ist es aber auch, beispielsweise im Bereich zwischen Abstandslaschen axial benachbarter Trennteller jeweils nur Ringsegmente als Dichtungen anzuordnen.The seals 23 are arranged in the plate gaps 25 between vertically adjacent separating plates 3b of the upper separating plate package section 7. They are preferably designed as circumferential sealing rings. However, it is also conceivable to arrange only ring segments as seals, for example, in the area between spacer plates of axially adjacent separating plates.

Nach einer bevorzugten Variante wird eine besonders gute Dichtwirkung dadurch erzielt, dass die Dichtungen 23 in korrespondierend geformten Aufnahmenuten 24 eingebracht sind, welche in den Trenntellern ausgebildet sind. Nach Fig. 2b fluchten diese Aufnahmenuten 24 in vertikaler Richtung. Nach Fig. 2c ist dagegen vorgesehen, die Aufnahmenuten (Ringnuten) 24 in vertikal übereinander liegenden Trenntellern 3b radial versetzt zueinander auszubilden, so dass auch die Dichtungen in vertikal aufeinander folgenden Trenntellerspalten 25 zwischen benachbarten Trenntellern 3b jeweils auf verschiedenen Radien liegen.According to a preferred variant, a particularly good sealing effect is achieved in that the seals 23 are introduced in correspondingly shaped receiving grooves 24 which are formed in the separating plates. To Fig. 2b align these receiving grooves 24 in the vertical direction. To Fig. 2c on the other hand, provision is made for the receiving grooves (ring grooves) 24 to be radially offset from one another in vertically superimposed separating plates 3b, so that the seals in vertically successive separating plate gaps 25 between adjacent separating plates 3b each lie on different radii.

Nach Fig. 2d wird die Abdichtung radial nach innen hin nicht durch separate Dichtungen erreicht, sondern dadurch, dass die vertikale benachbarten Trennteller jeweils jedenfalls abschnittsweise direkt aneinander liegen, beispielsweise in einem konischen Steilbereich 32, in dem der Konizitätswinkel β deutlich kleiner ist als der Konizitätswinkel α zur Drehachse D, so dass sich die benachbarten Trennteller 3b in diesem Bereich direkt abdichtend berühren.To Fig. 2d the sealing radially inwards is not achieved by separate seals, but rather in that the vertical adjacent separating plates are in each case directly adjacent to each other in sections, for example in a conical steep area 32 in which the conicity angle β is significantly smaller than the conicity angle α to the axis of rotation D. , so that the adjacent separating plates 3b touch each other directly in this area.

In dem unteren Trenntellerpaketabschnitt 6 weisen die Trennspalte 25 zwischen vertikal benachbarten Trenntellern 3a vorzugsweise einen kleineren Abstand auf als im oberen Trenntellerpaketabschnitt 7. Bezugszeichen Schleudertrommel 1 Tellerpaket 2 Teller 3, 3a, 3b, 3c Verteilerschaft 4 Verteiler 5 unterer Trenntellerpaketabschnitt 6 oberer Trenntellerpaketabschnitt 7 Zulaufrohr 8 Verteilerkanal 9 Steigekanal 10 Ableitungskanal 11 Steigekanäle 14 Ableitungskanäle 15 Feststoffaustragsöffnungen 18 Kolbenschieber 19 Dichtungen 23 Flachdichtungen 23a Aufnahmenuten 24 Trenntellerspalte 25 Trenntellerabschnitte 30, 31 Steilbereich 32 Radien R1, R2, Drehachse D Flüssigkeitsphase L1, L2 Feststoffphase S In the lower separator plate section 6, the separating gaps 25 between vertically adjacent separator plates 3a preferably have a smaller distance than in the upper separator plate section 7. <b><u> reference number <//></b> Centrifugal drum 1 Plate pack 2nd Plate 3, 3a, 3b, 3c Distribution body 4th Distributor 5 lower separator plate section 6 upper separator plate section 7 Inlet pipe 8th Distribution channel 9 Riser 10th Discharge channel 11 Risers 14 Drainage channels 15 Solid discharge openings 18th Spool 19th Seals 23 Gaskets 23a Grooves 24th Separation plate column 25th Separating plate sections 30, 31 Steep area 32 Radii R1, R2, Axis of rotation D Liquid phase L1, L2 Solid phase S

Claims (14)

  1. Separator having a centrifugal drum (1) with a vertical rotational axis, in which a separator disk assembly (2) is arranged, which consists of a plurality of separator disks stacked one above the other (3) and is divided into a lower separator disk assembly section (6) and an upper separator disk assembly section (7), wherein
    a. the one lower separator disk assembly section (6) is designed as a separating device for separating an inflowing material to be centrifuged in the centrifugal field into two liquid phases (L1, L2) or as a combined separating and clarifying device for separating an inflowing material to be centrifuged in the centrifugal field into two liquid phases (L1, L2) and for clarifying a solid phase,
    b. the other upper separator disk assembly section (7) is designed as a clarifying device for clarifying a liquid phase to remove solids (S),
    characterized in that
    c. the upper separator disk assembly section (7), which acts as a clarifying device, is designed so as to be sealed radially inwards.
  2. Separator according to claim 1, characterized in that the upper separator disk assembly section (7) is designed exclusively as a clarifying device.
  3. Separator according to one of the preceding claims, characterized in that in the upper separator disk assembly section (7) acting as clarifying device, the separator disk gap (25) between vertically adjacent separator disks (3b) are sealed radially inwards by means of seals (23).
  4. Separator according to one of the preceding claims, characterized in that the seals (23) are designed as circumferential sealing rings.
  5. Separator according to claim 4, characterized in that the seals (23) are arranged in corresponding receiving grooves (24) in the separator disks.
  6. Separator according to claim 5, characterized in that the seals (23) and/or the receiving grooves (24) of the upper separator disk assembly section (7) are aligned with one another in the vertical direction.
  7. Separator according to claim 5, characterized in that the seals (23) and/or the receiving grooves (24) of the upper separator disk assembly section (7) are arranged offset to one another in the vertical direction.
  8. Separator according to one of the preceding claims, characterized in that the seals (23) have a rectangular, oval or circular cross-section.
  9. Separator according to one of the preceding claims, characterized in that the sealing is achieved radially inwardly by direct contact between the separator disks.
  10. Separator according to claim 9, characterized in that for sealing radially inwardly, vertically adjacent separator disks (3b) lie directly against one another in a conical steep region (32) in which the angle of conicity β is smaller than the angle of conicity a in a conical separator disk section (31) outside the conical steep region (32).
  11. Separator according to one of the preceding claims, characterized in that the separator disks (3b) in the upper separator disk assembly section (7) designed as a clarifying device have a greater vertical distance than the separator disks (3a) in the lower separator disk assembly section (6) designed as a separating device.
  12. Separator according to one of the preceding claims, characterized in that the separator disk assembly (2) is divided into the lower separator disk assembly section (6) and the upper separator disk assembly section (7) by a separator disk (3b) having a larger diameter than the remaining separator disks (3a, 3c).
  13. Separator according to one of the preceding claims, characterized in that a discharge of the one, lighter liquid phase (L1) occurs radially inwardly in the lower separator disk assembly section (6), and in that the other, heavier liquid phase (L2) is conducted into a rising channel (14) which passes axially through the entire disk packet.
  14. Separator according to one of the preceding claims, characterized by discontinuously closable solids discharge openings (18).
EP10716333.9A 2009-04-29 2010-04-27 Separator Active EP2424675B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019392A DE102009019392A1 (en) 2009-04-29 2009-04-29 separator
PCT/EP2010/055601 WO2010125049A1 (en) 2009-04-29 2010-04-27 Separator

Publications (2)

Publication Number Publication Date
EP2424675A1 EP2424675A1 (en) 2012-03-07
EP2424675B1 true EP2424675B1 (en) 2020-07-15

Family

ID=42542894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10716333.9A Active EP2424675B1 (en) 2009-04-29 2010-04-27 Separator

Country Status (3)

Country Link
EP (1) EP2424675B1 (en)
DE (1) DE102009019392A1 (en)
WO (1) WO2010125049A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532153C2 (en) * 2008-04-08 2009-11-03 Alfa Laval Corp Ab Separation disc and separator
EP2664385B1 (en) 2012-05-14 2017-03-01 Alfa Laval Corporate AB A disc package for a centrifugal separator
DE202016101272U1 (en) 2016-03-08 2017-06-09 Gea Mechanical Equipment Gmbh separator
US20210362166A1 (en) * 2017-12-19 2021-11-25 Tetra Laval Holdings & Finance S.A. Separating milk
WO2021018540A1 (en) * 2019-07-26 2021-02-04 Tetra Laval Holdings & Finance S.A. A centrifugal separator

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Publication number Priority date Publication date Assignee Title
US993791A (en) * 1905-08-19 1911-05-30 Gustaf Oscar Wallenberg Liner for centrifugal liquid-separators.
US933791A (en) * 1909-05-03 1909-09-14 Samuel Sinkler Physician's hypodermic-syringe case.
GB206723A (en) 1922-12-06 1923-11-15 Johannes Valdemar Marten Risbe Improvements in or relating to centrifugal cream separators
US2487364A (en) 1943-04-22 1949-11-08 Superior Ab Automatically opening separator bowl
US2725190A (en) * 1954-04-19 1955-11-29 Int Harvester Co Cream separator disk assembly
DK114256B (en) 1960-04-22 1969-06-09 Separator Ab Centrifuge.
SE8803686D0 (en) * 1988-10-17 1988-10-17 Alfa-Laval Separation Ab centrifugal
DD288322A5 (en) * 1989-10-06 1991-03-28 Veb Kyffhaeuser Artern Betrieb Des Veb Kombinat Nagema,De CENTRIFUGAL SEPARATOR FOR CLEANING AND DISCONNECTING HIGH SOLID-LIQUID FLUIDS
DE19508334C2 (en) * 1995-03-09 1999-07-01 Westfalia Separator Ag Process and centrifuge for extracting essential oil from citrus fruits

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2424675A1 (en) 2012-03-07
WO2010125049A1 (en) 2010-11-04
DE102009019392A1 (en) 2010-11-11

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