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EP1260273A1 - Solid-bowl screw centrifuge - Google Patents

Solid-bowl screw centrifuge Download PDF

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Publication number
EP1260273A1
EP1260273A1 EP02009098A EP02009098A EP1260273A1 EP 1260273 A1 EP1260273 A1 EP 1260273A1 EP 02009098 A EP02009098 A EP 02009098A EP 02009098 A EP02009098 A EP 02009098A EP 1260273 A1 EP1260273 A1 EP 1260273A1
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EP
European Patent Office
Prior art keywords
solid
centrifuge according
screw centrifuge
bowl screw
screw conveyor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02009098A
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German (de)
French (fr)
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EP1260273B1 (en
Inventor
Josef Oberhauser
Benito Castillo Rodriguez
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Hiller GmbH
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Hiller 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
    • B04B1/20—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
    • 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
    • B04B2001/2041—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 baffles, plates, vanes or discs attached to the conveying screw

Definitions

  • the invention relates to a solid bowl screw centrifuge for continuous separation of a multi-phase flowable mixture
  • a solid bowl screw centrifuge for continuous separation of a multi-phase flowable mixture
  • a solid bowl screw centrifuge for continuous separation of a multi-phase flowable mixture
  • a cylindrical and a conical drum with a composite rotor Discharge openings for the separate phases and one Conveyor screw rotatable within the rotor for transport the most difficult phase to the corresponding discharge opening, wherein means for the feed of the mixture to be separated into the Centrifuge are provided and at least on the screw conveyor a baffle plate is attached.
  • Screw centrifuges of this type are mainly used to get the purest possible olive oil from olives, the free of water and cloudy substances.
  • Other uses in the food sector for example Manufacture of fruit and vegetable juices or extraction animal or vegetable oils and fats.
  • IT-PS 675 801 describes a system for the extraction of Olive oil, the hydraulic oil used up to that point Should replace presses that did not allow continuous operation.
  • the solution to this problem is to use a Centrifuge provided in which the solids and on the other hand, that of oil, water and small ones Fruit residue existing liquid mixture is withdrawn, the must then be fed to a separator.
  • the experience has shown, however, that the liquid phase is still high Contained solids content, which is a complex and expensive After treatment required to the liquid phase of free the solid particles contained therein.
  • the invention is therefore based on the object of a device to make available, which enables the share of liquid phase in the solid phase with constructive and economically little effort by a considerable proportion to reduce.
  • the invention has surprisingly shown that one on the one hand compared to the previously used Two-phase systems get drier solid phase while on the other hand, the lighter phase is very slight Contains solids, which, if necessary, subsequently can be easily separated.
  • the extracted solid phase has a smaller olive oil Amount of amniotic fluid during the lighter phase there is largely solids-free oil and water and thus is more economical to separate.
  • the screw conveyor which is behind the baffle plate in the conveying direction lies, has one or more return openings, finds the liquid or solid separated from the solid Liquid mixture a way to subsequently under the Baffle plate through to the corresponding discharge openings flow back.
  • These usually consist of a radial adjustable weir or an equivalent organ whose Opening width the desired level of the to be separated Liquid determined.
  • the return opening can have any shape that it is the liquid Phase or the liquid phases allowed from the range of Screw conveyor that connects to the baffle plate to flow back there.
  • a window can, for example, by one Section of the screw conveyor are generated, which as Band snail or as deviating from the circular shape Snail part is formed.
  • the return opening by an interruption in the To produce a spiral gear, for example by moving in Circumferential direction extending gap or in Circumferential discontinuity of the helical gear, the forms an overlap point.
  • a rotor 10 is a solid-bowl screw centrifuge 12 shown by a not shown, known drive is rotated.
  • the rotor 10 consists of a cylindrical drum 14 and an adjoining, conical drum 16.
  • a screw conveyor 18 is rotatably mounted, the Rotary drive is also not shown.
  • the screw conveyor 18 is driven at a different speed than the rotor 10.
  • the screw spiral 20 of the screw conveyor 18 is on one Hollow shaft 22 attached and arranged so that the Direction of conveyance from the cylindrical drum 14 to the conical Drum 16 takes place.
  • the hollow shaft 22 over the entire length of the rotor 10 constant diameter.
  • baffle plate 24 On the hollow shaft 22 is in the region of the transition from the cylindrical Drum 14 in the conical drum 16 a baffle plate 24 attached, the radially outer edge 26 of an annular Leaves passage opening 28 to the inner wall 30 of the rotor 10.
  • the baffle plate 24 can also be on another Place the hollow shaft 22 to be fixed.
  • the spiral path 42 of the screw conveyor 18 has the in the conveying direction according to the arrow 32 behind the Baffle plate 24 is located, return openings 44. It could be found that 44 through these return openings liquid portion in the solid 40, which is already in the range of conical drum 16 is again significantly reduced can be, obviously because the one separated there Liquid 46 a way back via the return openings 44 through the passage opening 28 in the area of the cylindrical Drum 14 takes place.
  • Figure 2 shows a variant of Figure 1, in which the hollow shaft 22 does not have a constant diameter, but also conical in the area of the conical drum 18 is.
  • the liquid phase again separates into a light and a medium phase, for example Oil and water or fruit juice / vegetable juice and water.
  • a medium phase for example Oil and water or fruit juice / vegetable juice and water.
  • the solid 40 that is discharged through the discharge opening 38 can be explained in a subordinate decanter Design to be further treated to the yield of "noble Phase "(oil, fruit juice, etc.) again and the Reduce the liquid content in the solid again.
  • the centrifuge according to the invention can separate all multiphase products are used.
  • the centrifuge according to the invention can separate all multiphase products are used.

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  • Centrifugal Separators (AREA)

Abstract

A screw centrifuge (12) with a full outer cover, in particular, for the continuous phase separation of solids-liquids mixtures, comprises a screw element (42) which in the feed direction is located after the compression disk (24), and is provided with at least one flow-back hole (44) for lighter phases (46).

Description

Die Erfindung betrifft eine Vollmantel-Schneckenzentrifuge zum kontinuierlichen Trennen eines aus mehreren Phasen bestehenden, fließfähigen Gemisches, umfassend einen aus einer zylindrischen und einer konischen Trommel zusammengesetzten Rotor mit Austragsöffnungen für die voneinander getrennten Phasen und eine innerhalb des Rotors drehbare Förderschnecke für den Transport der schwersten Phase zu der entsprechenden Austragsöffnung, wobei Mittel für den Zulauf des zu trennenden Gemisches in die Zentrifuge vorgesehen sind und auf der Förderschnecke wenigstens eine Stauscheibe angebracht ist.The invention relates to a solid bowl screw centrifuge for continuous separation of a multi-phase flowable mixture comprising one of a cylindrical and a conical drum with a composite rotor Discharge openings for the separate phases and one Conveyor screw rotatable within the rotor for transport the most difficult phase to the corresponding discharge opening, wherein means for the feed of the mixture to be separated into the Centrifuge are provided and at least on the screw conveyor a baffle plate is attached.

Schneckenzentrifugen dieser Bauart werden vor allem eingesetzt, um aus Oliven möglichst reines Olivenöl zu gewinnen, das frei von Wasser und Trübstoffen sein soll. Weitere Einsatzmöglichkeiten auf dem Lebensmittelsektor sind beispielsweise die Herstellung von Frucht- und Gemüsesäften oder die Gewinnung tierischer oder pflanzlicher Öle und Fette.Screw centrifuges of this type are mainly used to get the purest possible olive oil from olives, the free of water and cloudy substances. Other uses in the food sector, for example Manufacture of fruit and vegetable juices or extraction animal or vegetable oils and fats.

Die IT-PS 675 801 beschreibt ein System zur Gewinnung von Olivenöl, das die bis dahin gebräuchlichen, hydraulischen Pressen ablösen sollte, die keinen kontinuierlichen Betrieb ermöglichten. Zur Lösung dieses Problems ist die Verwendung einer Zentrifuge vorgesehen, in der auf einer Seite die Feststoffe und auf der anderen Seite das aus Öl, Wasser und kleinen Fruchtresten bestehende Flüssigkeitsgemisch abgezogen wird, das anschließend einem Separator zugeführt werden muß. Die Erfahrung hat allerdings gezeigt, daß die flüssige Phase noch einen hohen Anteil an Feststoffen enthielt, was eine aufwendige und teure Nachbehandlung erforderlich machte, um die flüssige Phase von den darin enthaltenen Feststoffpartikeln zu befreien.IT-PS 675 801 describes a system for the extraction of Olive oil, the hydraulic oil used up to that point Should replace presses that did not allow continuous operation. The solution to this problem is to use a Centrifuge provided in which the solids and on the other hand, that of oil, water and small ones Fruit residue existing liquid mixture is withdrawn, the must then be fed to a separator. The experience has shown, however, that the liquid phase is still high Contained solids content, which is a complex and expensive After treatment required to the liquid phase of free the solid particles contained therein.

Um bei der Gewinnung von Olivenöl die aufgezeigten Probleme zu lösen, hat man daher einen anderen Weg eingeschlagen, wie er etwa in der DE-PS 42 06 006 erläutert ist. Dort wird der aufgeschlossene Fruchtbrei in einer Zweiphasen-Schneckenzentrifuge in Öl und ein Feststoff-Wasser-Gemisch aufgetrennt. Um aus diesem Feststoff-Wasser-Gemisch einen Feststoff zu gewinnen, der einen möglichst geringen Flüssigkeitsanteil hat, ist eine umfangreiche Nachbehandlung bei Extraktion, Trocknung und Transport erforderlich.To solve the problems outlined in the extraction of olive oil solve, you have therefore taken a different path from him is explained in DE-PS 42 06 006. There the open pulp in a two-phase screw centrifuge separated in oil and a solid-water mixture. To out to obtain a solid from this solid-water mixture has the smallest possible amount of liquid is one extensive post-treatment for extraction, drying and Transport required.

Um diesen Nachteil der aufwendigen Nachbehandlung des mit Flüssigkeit vermischten Feststoffaustrages zu vermeiden, hat man daher versucht, in einer Zweiphasen-Trennung einen möglichst trockenen Austrag des Feststoffanteils zu erzielen, was jedoch nur bis zu einem bestimmten Grad möglich war, weil mit sinkendem Flüssigkeitsanteil in der trockenen Phase nicht zu vermeiden war, daß die leichtere, flüssige Phase mit einem unzulässig hohen Feststoffanteil vermischt war.To this disadvantage of the complex post-treatment with One has to avoid liquid mixed solids discharge therefore tries to do one in a two-phase separation to achieve dry discharge of the solids content, but what was only possible to a certain extent because with decreasing Unavoidable liquid content in the dry phase was that the lighter, liquid phase with an inadmissible high solids content was mixed.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zur Verfügung zu stellen, die es ermöglicht, den Anteil der flüssigen Phase in der festen Phase mit konstruktiv und wirtschaftlich geringem Aufwand um einen beträchtlichen Anteil zu verringern.The invention is therefore based on the object of a device to make available, which enables the share of liquid phase in the solid phase with constructive and economically little effort by a considerable proportion to reduce.

Bei einer Schneckenzentrifuge der eingangs angegebenen Bauart wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß einer der Wendelgänge der Förderschnecke, der in Förderrichtung hinter der Stauscheibe liegt, wenigstens eine Rücklauföffnung für die leichteren Phasen aufweist. Vorzugweise ist die Rücklauföffnung in dem Wendelgang vorgesehen, der unmittelbar hinter der Stauscheibe liegt.With a screw centrifuge of the type specified at the beginning This object is achieved in that one of the Spiral paths of the screw conveyor, which is behind the Baffle plate is at least one return opening for the has easier phases. The return opening is preferred provided in the spiral gear, which is immediately behind the Baffle plate lies.

Mit der Erfindung hat sich in überraschender Weise gezeigt, daß man auf der einen Seite eine gegenüber den bisher eingesetzten Zweiphasen-Systemen trockenere Feststoffphase erhält, während auf der anderen Seite die leichtere Phase sehr geringe Feststoffanteile enthält, die, sofern notwendig, anschließend problemlos separiert werden können. Im Fall der Gewinnung von Olivenöl hat die abgezogene Feststoffphase einen kleineren Anteil an Fruchtwasser, während die leichtere Phase aus weitgehend feststofffreiem Öl und Wasser besteht und damit wirtschaftlicher trennbar ist.The invention has surprisingly shown that one on the one hand compared to the previously used Two-phase systems get drier solid phase while on the other hand, the lighter phase is very slight Contains solids, which, if necessary, subsequently can be easily separated. In the case of the extraction of The extracted solid phase has a smaller olive oil Amount of amniotic fluid during the lighter phase there is largely solids-free oil and water and thus is more economical to separate.

Da bei der Vorrichtung gemäß der Erfindung einer der Wendelgänge der Förderschnecke, der in Förderrichtung hinter der Stauscheibe liegt, eine oder mehrere Rücklauföffnungen aufweist, findet die vom Feststoff abgetrennte Flüssigkeit bzw. das abgetrennte Flüssigkeitsgemisch einen Weg, um anschließend unter der Stauscheibe hindurch zu den entsprechenden Austragsöffnungen zurückzuströmen. Diese bestehen in aller Regel aus einem radial einstellbaren Wehr oder einem gleichwirkenden Organ, dessen Öffnungsweite das gewünschte Niveau der abzutrennenden Flüssigkeit bestimmt.Since in the device according to the invention one of the spiral gears the screw conveyor, which is behind the baffle plate in the conveying direction lies, has one or more return openings, finds the liquid or solid separated from the solid Liquid mixture a way to subsequently under the Baffle plate through to the corresponding discharge openings flow back. These usually consist of a radial adjustable weir or an equivalent organ whose Opening width the desired level of the to be separated Liquid determined.

Die Rücklauföffnung kann jede Form haben, die es der flüssigen Phase oder den flüssigen Phasen gestattet, aus dem Bereich der Förderschnecke, der sich an die Stauscheibe anschließt, zu dieser hin zurückzufließen. Konstruktiv einfache Lösungen sind Bohrungen oder Fenster im Wendelgang, wobei es günstig sein kann, wenn der radial innere Rand des Fensters oder der Fenster auf der Mantelfläche der Welle liegt, die die Förderschnecke trägt. Ein derartiges Fenster kann beispielsweise von einem Abschnitt der Förderschnecke erzeugt werden, der als Bandschnecke oder als von der Kreisform abweichender Schneckenteil ausgebildet ist. Eine andere Möglichkeit besteht darin, die Rücklauföffnung durch eine Unterbrechung im Wendelgang herzustellen, etwa durch einen sich in Umfangsrichtung erstreckenden Spalt oder eine sich in Umfangsrichtung erstreckende Diskontinuität des Wendelgangs, die eine Überlappungsstelle bildet.The return opening can have any shape that it is the liquid Phase or the liquid phases allowed from the range of Screw conveyor that connects to the baffle plate to flow back there. Are structurally simple solutions Boreholes or windows in the spiral aisle, it being cheap can if the radially inner edge of the window or windows on the lateral surface of the shaft, which is the screw conveyor wearing. Such a window can, for example, by one Section of the screw conveyor are generated, which as Band snail or as deviating from the circular shape Snail part is formed. Another option is there therein, the return opening by an interruption in the To produce a spiral gear, for example by moving in Circumferential direction extending gap or in Circumferential discontinuity of the helical gear, the forms an overlap point.

Die Erfindung ist nachstehend an Ausführungsbeispielen erläutert, die in der Zeichnung dargestellt sind. Es zeigen:

  • Figur 1 einen schematischen Längsschnitt durch eine erste Ausführungsform einer Dekantierzentrifuge gemäß der Erfindung,
  • Figur 2 eine Variante der Figur 1 und
  • Figur 3 eine weitere Variante.
    • The invention is explained below using exemplary embodiments which are illustrated in the drawing. Show it:
  • FIG. 1 shows a schematic longitudinal section through a first embodiment of a decanter centrifuge according to the invention,
  • Figure 2 shows a variant of Figure 1 and
  • Figure 3 shows another variant.

    • Im Ausführungsbeispiel der Figur 1 ist ein Rotor 10 einer Vollmantel-Schneckenzentrifuge 12 dargestellt, der durch einen nicht gezeigten, an sich bekannten Antrieb in Drehung versetzt wird. Der Rotor 10 besteht aus einer zylindrischen Trommel 14 und einer sich daran anschließenden, konischen Trommel 16. In dem Rotor 10 ist eine Förderschnecke 18 drehbar gelagert, deren Drehantrieb ebenfalls nicht dargestellt ist. Die Förderschnecke 18 wird mit einer anderen Drehzahl als der Rotor 10 angetrieben. Die Schneckenwendel 20 der Förderschnecke 18 ist auf einer Hohlwelle 22 angebracht und so angeordnet, daß die Förderrichtung von der zylindrischen Trommel 14 zur konischen Trommel 16 hin erfolgt. Im Ausführungsbeispiel der Figur 1 hat die Hohlwelle 22 über die gesamte Länge des Rotors 10 einen gleichbleibenden Durchmesser.In the exemplary embodiment in FIG. 1, a rotor 10 is a solid-bowl screw centrifuge 12 shown by a not shown, known drive is rotated. The rotor 10 consists of a cylindrical drum 14 and an adjoining, conical drum 16. In the Rotor 10, a screw conveyor 18 is rotatably mounted, the Rotary drive is also not shown. The screw conveyor 18 is driven at a different speed than the rotor 10. The screw spiral 20 of the screw conveyor 18 is on one Hollow shaft 22 attached and arranged so that the Direction of conveyance from the cylindrical drum 14 to the conical Drum 16 takes place. Has in the embodiment of Figure 1 the hollow shaft 22 over the entire length of the rotor 10 constant diameter.

    Auf der Hohlwelle 22 ist im Bereich des Übergangs von der zylindrischen Trommel 14 in die konische Trommel 16 eine Stauscheibe 24 angebracht, deren radial äußerer Rand 26 eine ringförmige Durchtrittsöffnung 28 zur Innenwand 30 des Rotors 10 freiläßt. Selbstverständlich kann die Stauscheibe 24 auch an einer anderen Stelle der Hohlwelle 22 befestigt sein. On the hollow shaft 22 is in the region of the transition from the cylindrical Drum 14 in the conical drum 16 a baffle plate 24 attached, the radially outer edge 26 of an annular Leaves passage opening 28 to the inner wall 30 of the rotor 10. Of course, the baffle plate 24 can also be on another Place the hollow shaft 22 to be fixed.

    Über nicht weiter dargestellte, an sich bekannte Mittel wird das zu trennende Gemisch 32 in Richtung des eingezeichneten Pfeiles in die Hohlwelle 22 geleitet, um anschließend durch Aufgabeöffnungen 34 in den Bereich der Schneckenwendel 20 auszutreten. Die Förderschnecke 18 transportiert das Gemisch 32, von dem sich aufgrund der Zentrifugalwirkung allmählich die leichte und ggf. eine mittlere, ebenfalls flüssige Phase 46 abtrennt, in die konische Trommel 16, an deren verjüngtem Ende Austragsöffnungen 38 vorgesehen sind, über welche die schwere Phase als weitgehend trockener Feststoff 40 abgegeben wird.This is done by means not known, known per se mixture 32 to be separated in the direction of the arrow shown passed into the hollow shaft 22, then through Feed openings 34 in the area of the screw helix 20 withdraw. The screw conveyor 18 transports the mixture 32, of which the centrifugal effect gradually light and possibly a medium, also liquid phase 46 separates into the conical drum 16, at its tapered end Discharge openings 38 are provided, through which the heavy Phase is released as a largely dry solid 40.

    Gemäß der Erfindung hat der Wendelgang 42 der Förderschnecke 18, der in Förderrichtung entsprechend dem Pfeil 32 hinter der Stauscheibe 24 liegt, Rücklauföffnungen 44. Es konnte festgestellt werden, daß über diese Rücklauföffnungen 44 der flüssige Anteil im Feststoff 40, der sich bereits im Bereich der konischen Trommel 16 befindet, nochmals merklich verringert werden kann, offensichtlich deshalb, weil die dort abgetrennte Flüssigkeit 46 über die Rücklauföffnungen 44 einen Weg zurück durch die Durchtrittsöffnung 28 in den Bereich der zylindrischen Trommel 14 findet.According to the invention, the spiral path 42 of the screw conveyor 18 has the in the conveying direction according to the arrow 32 behind the Baffle plate 24 is located, return openings 44. It could be found that 44 through these return openings liquid portion in the solid 40, which is already in the range of conical drum 16 is again significantly reduced can be, obviously because the one separated there Liquid 46 a way back via the return openings 44 through the passage opening 28 in the area of the cylindrical Drum 14 takes place.

    Dabei hat sich herausgestellt, daß aufgrund des über die Rücklauföffnungen 44 und die Stauscheibe 24 zurückströmenden Flüssigkeitsanteils die Ausbeute der zu gewinnenden Flüssigkeit (Öl, Fruchtsaft o. ä.) nochmals gesteigert wird, da das zurückströmende Wasser diese auszutragende Flüssigkeit mitreißt.It has been found that due to the over Return openings 44 and the baffle plate 24 flowing back Liquid fraction the yield of the liquid to be obtained (Oil, fruit juice or similar) is increased again because the back flowing water entrains this liquid to be discharged.

    In Figur 1 ist angedeutet, daß im Bereich des Eingabeendes des Rotors 10 in bekannter Weise ein Wehr 48 oder ein ähnliches Organ angebracht ist, dessen radiale Durchtrittsöffnung eingestellt werden kann, um das Niveau der abzutrennenden Flüssigkeit 46 zu bestimmen. Figur 1 zeigt, daß die Rücklauföffnungen 44 auf diesem Niveau 50 liegen. In Figure 1 it is indicated that in the area of the input end of the Rotor 10 a weir 48 or the like in a known manner Organ is attached, the radial passage opening can be adjusted to the level of the separated To determine liquid 46. Figure 1 shows that the Return openings 44 are at this level 50.

    Figur 2 zeigt eine Variante der Figur 1, bei der die Hohlwelle 22 keinen durchgehend gleichbleibenden Durchmesser hat, sondern im Bereich der konischen Trommel 18 ebenfalls konisch ausgebildet ist.Figure 2 shows a variant of Figure 1, in which the hollow shaft 22 does not have a constant diameter, but also conical in the area of the conical drum 18 is.

    Im Ausführungsbeispiel der Figur 3 ist gezeigt, daß bei sonst gleichbleibender Ausbildung der Schneckenzentrifuge 12 die Hohlwelle 22 der Förderschnecke 18 im Bereich der konischen Trommel 16 ebenfalls - wie beim Beispiel der Figur 1 - zylindrisch ausgebildet ist, jedoch einen Durchmesser hat, der kleiner als der Durchmesser der Hohlwelle 22 im Bereich der zylindrischen Trommel 14 ist. Auf diese Weise wird zwischen der Stauscheibe 24 und dem folgenden Wendelgang 42 der Förderschnecke 18 eine Stufe 52 gebildet, die möglicherweise dazu beiträgt, die Rückströmung der Flüssigkeit 46 über die Rücklauföffnungen 44 und durch die Durchtrittsöffnung 28 hindurch nochmals zu verbessern.In the embodiment of Figure 3 it is shown that in otherwise constant design of the screw centrifuge 12, the hollow shaft 22 of the screw conveyor 18 in the region of the conical drum 16 also - as in the example of Figure 1 - cylindrical but has a diameter smaller than that Diameter of the hollow shaft 22 in the region of the cylindrical drum 14 is. In this way, between the baffle plate 24 and the following spiral path 42 of the screw conveyor 18 a step 52 formed, which may contribute to the backflow of the Liquid 46 through the return openings 44 and through the To further improve passage opening 28 therethrough.

    In vielen Fällen empfiehlt es sich, zur Weiterverarbeitung der abgetrennten, leichteren Phasen hinter der Schneckenzentrifuge 12 einen Separator vorzusehen, der die flüssige Phase nochmals in eine leichte und eine mittlere Phase trennt, beispielsweise Öl und Wasser oder Fruchtsaft/Gemüsesaft und Wasser. Alternativ wäre es auch möglich, die Schneckenzentrifuge als Dreiphasendekanter auszubilden, um die flüssigen Phasen getrennt voneinander abzuführen.In many cases it is advisable to process the separated, lighter phases behind the screw centrifuge 12 to provide a separator, the liquid phase again separates into a light and a medium phase, for example Oil and water or fruit juice / vegetable juice and water. alternative it would also be possible to use the screw centrifuge as Train three-phase decanters to separate the liquid phases dissipate from each other.

    Der Feststoff 40, der über die Austragsöffnung 38 abgegeben wird, kann in einem nachgeordneten Dekanter der erläuterten Bauart weiter behandelt werden, um die Ausbeute der "edlen Phase" (Öl, Fruchtsaft etc.) nochmals zu erhöhen und den Flüssigkeitsanteil im Feststoff nochmals zu verringern.The solid 40 that is discharged through the discharge opening 38 can be explained in a subordinate decanter Design to be further treated to the yield of "noble Phase "(oil, fruit juice, etc.) again and the Reduce the liquid content in the solid again.

    Versuche mit der erfindungsgemäß ausgebildeten Dekantierzentrifuge haben ergeben, daß aufgrund der Rücklauföffnungen 44 der ausgetragene Feststoff 40 so trocken ist, daß die anschließende Trocknung wesentlich wirtschaftlicher durchgeführt werden kann, was sich vorteilhaft auf die aufzubringende Heizenergie und auf die Betriebskosten (Transportkosten etc.) auswirkt. Wesentlich bei diesem Ergebnis ist es auch, daß die Ausbeute an der "edlen Phase" sehr groß ist.Experiments with the decanter centrifuge designed according to the invention have shown that due to the return openings 44th the discharged solid 40 is so dry that the subsequent drying carried out much more economically can be what is beneficial to the to be applied Heating energy and operating costs (transport costs etc.) effect. It is also essential for this result that the Yield on the "noble phase" is very large.

    Die Zentrifuge gemäß der Erfindung kann zur Trennung aller mehrphasigen Produkte verwendet werden. Neben der bereits angesprochenen Lebensmittelindustrie ist ein Einsatz auch möglich in der Chemie, Pharmazie, Altölaufbereitung, Biotreibstoffproduktion u.v.m.The centrifuge according to the invention can separate all multiphase products are used. In addition to the already addressed food industry is an application too possible in chemistry, pharmacy, waste oil processing, biofuel production u.v.m.

    Claims (9)

    Vollmantel-Schneckenzentrifuge zum kontinuierlichen Trennen eines aus mehreren Phasen bestehenden, fließfähigen Gemisches, insbesondere eines Feststoff-Flüssigkeits-Gemisches, umfassend einen aus einer zylindrischen und einer konischen Trommel (14, 16) zusammengesetzten Rotor (10) mit Austragsöffnungen für die voneinander getrennten Phasen und eine innerhalb des Rotors drehbare Förderschnecke (18) für den Transport der schwersten Phase zu der entsprechenden Austragsöffnung (38), wobei Mittel für den Zulauf des zu trennenden Gemisches in die Zentrifuge vorgesehen sind und auf der Förderschnecke (18) wenigstens eine Stauscheibe (24) angebracht ist, dadurch gekennzeichnet, daß einer der Wendelgänge (42) der Förderschnecke (18), der in Förderrichtung hinter der Stauscheibe (24) liegt, wenigstens eine Rücklauföffnung (44) für die leichteren Phasen (46) aufweist.Solid-bowl screw centrifuge for the continuous separation of a multi-phase, flowable mixture, in particular a solid-liquid mixture, comprising a rotor (10) composed of a cylindrical and a conical drum (14, 16) with discharge openings for the separated phases and a screw conveyor (18) rotatable within the rotor for transporting the heaviest phase to the corresponding discharge opening (38), means for the feed of the mixture to be separated into the centrifuge being provided and at least one baffle plate (24) on the screw conveyor (18) is attached, characterized in that one of the helical gears (42) of the screw conveyor (18), which lies behind the baffle plate (24) in the conveying direction, has at least one return opening (44) for the lighter phases (46). Vollmantel-Schneckenzentrifuge nach Anspruch 1, dadurch gekennzeichnet, daß die wenigstens eine Rücklauföffnung (44) in dem Wendelgang (42) vorgesehen ist, der unmittelbar hinter der Stauscheibe (24) liegt.Solid-bowl screw centrifuge according to Claim 1, characterized in that the at least one return opening (44) is provided in the spiral passage (42) which lies immediately behind the baffle plate (24). Vollmantel-Schneckenzentrifuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Rücklauföffnung (44) aus einem Fenster besteht.Solid bowl screw centrifuge according to claim 1 or 2, characterized in that the return opening (44) consists of a window. Vollmantel-Schneckenzentrifuge nach Anspruch 3, dadurch gekennzeichnet, daß der radial innere Rand des Fensters auf der Mantelfläche der die Förderschnecke (18) tragenden Welle (22) liegt.Solid bowl screw centrifuge according to claim 3, characterized in that the radially inner edge of the window lies on the lateral surface of the shaft (22) carrying the screw conveyor (18). Vollmantel-Schneckenzentrifuge nach Anspruch 1, dadurch gekennzeichnet, daß die Rücklauföffnung (44) aus einer Unterbrechung des Wendelgangs (42) besteht. Solid-bowl screw centrifuge according to claim 1, characterized in that the return opening (44) consists of an interruption of the spiral passage (42). Vollmantel-Schneckenzentrifuge nach Anspruch 5, dadurch gekennzeichnet, daß die Unterbrechung durch einen sich in Umfangsrichtung der Förderschnecke (18) erstreckenden Spalt gebildet wird.Solid bowl screw centrifuge according to claim 5, characterized in that the interruption is formed by a gap extending in the circumferential direction of the screw conveyor (18). Vollmantel-Schneckenzentrifuge nach Anspruch 5, dadurch gekennzeichnet, daß durch die Unterbrechung im Wendelgang (42) eine in Umfangsrichtung verlaufende Überlappung gebildet wird.Solid bowl screw centrifuge according to claim 5, characterized in that the interruption in the helical path (42) forms an overlap extending in the circumferential direction. Vollmantel-Schneckenzentrifuge nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Förderschnecke (18) eine Welle (22) mit zwei unterschiedlichen Durchmessern hat, wobei die Stauscheibe (24) auf dem Abschnitt der Welle (22) mit größerem Durchmesser befestigt ist, während der die Rücklauföffnung (44) aufweisende Wendelgang (42) wenigstens teilweise auf dem sich daran über eine Stufe (52) anschließenden Abschnitt der Welle (22) mit kleinerem Durchmesser sitzt.Solid-bowl screw centrifuge according to one of the preceding claims, characterized in that the screw conveyor (18) has a shaft (22) with two different diameters, the baffle plate (24) being fastened to the section of the shaft (22) with a larger diameter while the helical gear (42) having the return opening (44) is at least partially seated on the section of the shaft (22) of smaller diameter adjoining it via a step (52). Vollmantel-Schneckenzentrifuge nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Austragsöffnung für die leichteren Phasen (46) ein Separator nachgeschaltet ist.Solid bowl screw centrifuge according to one of the preceding claims, characterized in that a separator is connected downstream of the discharge opening for the lighter phases (46).
    EP02009098A 2001-05-23 2002-04-24 Solid-bowl screw centrifuge Expired - Lifetime EP1260273B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10125096 2001-05-23
    DE10125096A DE10125096A1 (en) 2001-05-23 2001-05-23 Decanter centrifuge

    Publications (2)

    Publication Number Publication Date
    EP1260273A1 true EP1260273A1 (en) 2002-11-27
    EP1260273B1 EP1260273B1 (en) 2004-10-13

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    EP02009098A Expired - Lifetime EP1260273B1 (en) 2001-05-23 2002-04-24 Solid-bowl screw centrifuge

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    EP (1) EP1260273B1 (en)
    AT (1) ATE279262T1 (en)
    DE (2) DE10125096A1 (en)
    ES (1) ES2229006T3 (en)

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7156801B2 (en) * 2002-04-22 2007-01-02 Alfa Laval Copenhagen A/S Decanter centrifuge with a screw conveyor having a varying pitch
    US7229399B2 (en) * 2003-06-18 2007-06-12 Alfa Laval Corporate Ab Screw conveyor for a decanter centrifuge
    CN105880038A (en) * 2016-04-07 2016-08-24 安徽普源分离机械制造有限公司 Running water sludge thorough separation equipment
    CN106622686A (en) * 2015-08-26 2017-05-10 苏州瑞威离心分离技术有限公司 Horizontal spiral centrifugal machine
    WO2018149453A1 (en) * 2017-02-15 2018-08-23 Flottweg Se Solid-bowl centrifuge screw having a screw flight

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007003928A1 (en) 2007-01-26 2008-08-07 Westfalia Separator Gmbh Solid bowl centrifuge with a baffle plate
    DE102009001054A1 (en) 2009-02-20 2010-09-02 Hiller Gmbh Solid bowl centrifuge with coarse outlet
    SE546208C2 (en) * 2023-01-27 2024-07-02 Anders Olsson Device for separating gas from a composite gas flow

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2308559A (en) * 1940-03-12 1943-01-19 Frederick W Winkler Solid bowl type of centrifuging apparatus
    US3784091A (en) * 1971-11-03 1974-01-08 G Hiller Centrifugal separator
    DE2166909A1 (en) * 1971-06-21 1977-02-17 Flottweg Werk Bruckmayer Centrifuge - with horizontal counter rotating drum and worm
    EP0785029A1 (en) * 1996-01-18 1997-07-23 RAPANELLI FIORAVANTE S.p.A. Horizontal centrifuge for an optimum oil extraction

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2308559A (en) * 1940-03-12 1943-01-19 Frederick W Winkler Solid bowl type of centrifuging apparatus
    DE2166909A1 (en) * 1971-06-21 1977-02-17 Flottweg Werk Bruckmayer Centrifuge - with horizontal counter rotating drum and worm
    US3784091A (en) * 1971-11-03 1974-01-08 G Hiller Centrifugal separator
    EP0785029A1 (en) * 1996-01-18 1997-07-23 RAPANELLI FIORAVANTE S.p.A. Horizontal centrifuge for an optimum oil extraction

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7156801B2 (en) * 2002-04-22 2007-01-02 Alfa Laval Copenhagen A/S Decanter centrifuge with a screw conveyor having a varying pitch
    US7229399B2 (en) * 2003-06-18 2007-06-12 Alfa Laval Corporate Ab Screw conveyor for a decanter centrifuge
    CN106622686A (en) * 2015-08-26 2017-05-10 苏州瑞威离心分离技术有限公司 Horizontal spiral centrifugal machine
    CN105880038A (en) * 2016-04-07 2016-08-24 安徽普源分离机械制造有限公司 Running water sludge thorough separation equipment
    CN105880038B (en) * 2016-04-07 2018-05-15 安徽普源分离机械制造有限公司 A kind of sludge of drinking water is completely separated equipment
    WO2018149453A1 (en) * 2017-02-15 2018-08-23 Flottweg Se Solid-bowl centrifuge screw having a screw flight
    US11406991B2 (en) 2017-02-15 2022-08-09 Flottweg Se Solid-bowl centrifuge screw having a screw flight

    Also Published As

    Publication number Publication date
    EP1260273B1 (en) 2004-10-13
    DE50201260D1 (en) 2004-11-18
    ES2229006T3 (en) 2005-04-16
    DE10125096A1 (en) 2002-11-28
    ATE279262T1 (en) 2004-10-15

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