EP2586533B1 - Solid bowl screw centrifuge with a screw - Google Patents

Solid bowl screw centrifuge with a screw Download PDF

Info

Publication number
EP2586533B1
EP2586533B1 EP11008664.2A EP11008664A EP2586533B1 EP 2586533 B1 EP2586533 B1 EP 2586533B1 EP 11008664 A EP11008664 A EP 11008664A EP 2586533 B1 EP2586533 B1 EP 2586533B1
Authority
EP
European Patent Office
Prior art keywords
screw
drum
solid bowl
edge
rotation
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.)
Active
Application number
EP11008664.2A
Other languages
German (de)
French (fr)
Other versions
EP2586533A1 (en
Inventor
Manfred Schlarb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Flottweg SE
Original Assignee
Flottweg SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Flottweg SE filed Critical Flottweg SE
Priority to ES11008664T priority Critical patent/ES2754754T3/en
Priority to EP11008664.2A priority patent/EP2586533B1/en
Priority to PT110086642T priority patent/PT2586533T/en
Publication of EP2586533A1 publication Critical patent/EP2586533A1/en
Application granted granted Critical
Publication of EP2586533B1 publication Critical patent/EP2586533B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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 separating a medium into at least a light and a heavy phase with a rotatable drum and a rotatable therein screw, which has a screw hub with a worm spiral disposed thereon, which forms a heavy-phase conveyor track to this with the Carry out the screw from the drum out of the light phase.
  • Solid bowl centrifuges of the above type are used to separate or separate flowable media by means of centrifugal force into at least one light and one heavy phase.
  • the heavy phase deposits radially outward in the drum and the light phase floats radially inward thereon.
  • the heavy phase is discharged with the rotatable relative to the drum screw from the drum and the light phase discharged by means of about a weir or a paring disc radially inward.
  • the invention has for its object to provide a Vollmantelschneckenzentrifuge, by means of which in comparison to known centrifuges in a cost effective manner and in particular with low maintenance costs, a high oil yield can be achieved.
  • a solid bowl screw centrifuge for separating a medium into at least one light and one heavy phase with a rotatable drum and a rotatable screw having a screw hub with a spiral screw disposed thereon forming a heavy phase conveyor to take them out of the drum with the screw out of the light phase.
  • the conveyor track at least one knife-like element is arranged, which at the Schneckennabe arranged and protrudes from it so far that it dips into the medium to be separated during operation of the solid bowl screw centrifuge.
  • a knife-like element which is attached to the screw hub emerges.
  • the knife-like element is designed blade-like or plate-shaped, acts like a blade or cutting edge and cuts or cuts through in particular that barrier layer, which would otherwise prevent an increase from light phase to radially inside.
  • the blade according to the invention sets the circulating in the drum medium due to its cutting action a relatively low resistance and is therefore subject to only little wear.
  • the knife-like element albeit narrow slit cut into the release layer, then float through the then light phase.
  • the knife-like element has in particular parallel side surfaces or blade surfaces, on which viewed in the circumferential direction, the medium can slide along resistance largely free.
  • the knife surfaces of this type also advantageously extend substantially parallel to the adjacent surfaces of the screw helix.
  • the knife-like element according to the invention is therefore preferably attached to the screw hub aligned as well as the adjacent screw helix.
  • the element acts as not transverse to the flow like a paddle but extends substantially along the flow through the respective helical turn.
  • a continuous spiral screw is used.
  • the elements according to the invention have almost no conveying action but merely sever the said barrier layer. Although this also leads to a circulation of the medium itself, this circulation is relatively low due to the cutting action of the elements according to the invention. This is also an advantage of the solution according to the invention, because an excessive circulation in the medium would only worsen the previously achieved separation into light and heavy phase again.
  • a plurality of knife-like elements are preferably provided next to one another with surfaces aligned in parallel in a conveying passage or screw flight. Particularly preferably, there are three such elements side by side. It arises with the elements arranged in this way a kind of comb, which introduces cuts into the medium at short intervals. Through these cuts or slots, the light phase can then move radially inward.
  • the knife-like elements are mounted according to the invention on a base plate, which is attached to the screw hub exchangeably fixed, in particular screwed there is.
  • a base plate which is attached to the screw hub exchangeably fixed, in particular screwed there is.
  • Such base plates are also preferably mounted in four successive flights.
  • the screw of the solid bowl screw centrifuge according to the invention generally has a cylindrical region and a conical region, wherein the elements according to the invention are preferably arranged in the cylindrical region of the screw. Furthermore, the elements on the screw hub are preferably provided in an area axially outside an inlet area for introducing the medium to be centrifuged.
  • the inlet region is designed with openings in the screw hub, through which medium, which was supplied radially inward into the screw hub, can pass radially outward into the separation space between the screw hub and the drum wall.
  • the knife-like element is preferably provided with a pointing in the direction of rotation of the screw relative to the drum leading edge, which is designed sharply.
  • the front edge of this type forms a cutting edge, which cuts through the medium and the barrier layer located therein in a largely friction-free manner.
  • the knife-like element is further preferably provided with a leading edge pointing in the direction of rotation of the screw relative to the drum, which extends obliquely relative to the radial direction of the screw.
  • the thus oblique front edge leads to a pulling or pushing cut on the knife-like element according to the invention, whereby its separation behavior is further improved and in particular becomes particularly low in friction.
  • a pulling section for which the leading edge is pivoted away from the direction of rotation of the screw relative to the drum from radially inward to radially outward.
  • the pointing in the direction of rotation of the screw relative to the drum leading edge is preferably straight.
  • the cutting edge of this kind can be produced particularly inexpensively and can also be sharpened cost-effectively.
  • the knife-like element is preferably provided with a counter to the direction of rotation of the screw relative to the drum facing back edge, which is designed dull.
  • the such back edge thus forms a dull back of the knife.
  • a slot is formed through which in particular oil can rise from radially outside to radially inside.
  • the knife-like element is further preferably provided with a counter to the direction of rotation of the screw relative to the drum facing the rear edge, which extends substantially parallel to the radial direction and in the direction of rotation of the screw set back.
  • Such back edge provided a stable, wide blade for the element according to the invention and supports the preferred pulling cutting action according to the invention.
  • the opposite to the direction of rotation of the screw relative to the drum facing back edge is preferably designed straight.
  • the back edge of this type can likewise be produced in a particularly cost-effective manner.
  • the knife-like element is also advantageously provided with a pointing in the direction of rotation of the screw relative to the drum leading edge and opposite to the direction of rotation of the screw relative to the drum facing back edge, wherein the front edge and the back edge are designed radially inward to radially outwardly facing each other , It is formed in this way a V-shaped in the side view, sheet-like element which is attached to its broad side on the screw hub and thereby has a high rigidity.
  • the knife-like element is designed with a radial outer edge relative to the screw hub, which extends substantially tangentially.
  • the thus tangentially oriented outer edge is preferably offset radially inwardly, in particular because of the setback in the direction of rotation.
  • the outer edge preferably begins behind the radial direction of the screw hub and thus also supports the desired pulling cutting action.
  • the outer edge of this type also provides a lifting effect for the medium sliding along it, by means of which medium is conveyed from radially inward to radially outward.
  • the outer edge is also preferably less radially than the radially outer edge Helix itself. So it can also dive less far into the medium, as the helix.
  • the relative to the screw hub radially outer edge is preferably designed straight.
  • the outer edge of this type can also be produced very inexpensively, so that overall the element according to the invention can be manufactured from a sheet metal in a particularly cost-effective and low-grade manner.
  • the screw 12 is formed from a tubular or hollow cylindrical screw hub 14, which is surrounded on the outside by a screw helix 16.
  • the worm gear 16 extends as a wound sheet of the screw hub 14 radially outward at right angles or with a slightly deviating from the vertical angle so far protruding that it almost touches the associated (not shown) drum of the solid bowl worm centrifuge 10.
  • the screw flight 16 dips into a medium located in the associated drum and discharges this a separating heavy phase out of a radially inwardly collecting light phase out.
  • inlet openings 18 are formed in the screw hub 14, through which medium can pass radially inwards from the inside of the screw hub 14 in order to be separated there.
  • the single knife-like element 20 is (see Fig. 2 ) is designed as a blade having a straight, sharp leading edge 26, a straight, blunt back edge 28, and a straight radially outer, outer edge 30.
  • the front edge 26 is arranged counter to the direction of rotation of the worm 12 relative to the drum from radially inward to radially outward.
  • the inclination of the front edge 26 is about 30 ° and is so far that the outer edge 30 begins only behind belonging to this base plate 22 radial direction 32.
  • the outer edge 30 then extends tangentially from there over preferably 1/3 of the entire circumferential width of the blade of the knife-like element 20.
  • the back edge 28 extends parallel to the radial direction 32 and limits the outer edge 30 radially outwardly just below the radius of the helix 16.

Landscapes

  • Centrifugal Separators (AREA)

Description

Hintergrund der ErfindungBackground of the invention

Die Erfindung betrifft eine Vollmantelschneckenzentrifuge zum Trennen eines Mediums in mindestens eine leichte und eine schwere Phase mit einer drehbaren Trommel und einer darin drehbaren Schnecke, die eine Schneckennabe mit einer daran angeordneten Schneckenwendel aufweist, welche eine Förderbahn für die schwere Phase bildet, um diese mit der Schnecke aus der leichten Phase heraus aus der Trommel auszutragen.The invention relates to a solid bowl screw centrifuge for separating a medium into at least a light and a heavy phase with a rotatable drum and a rotatable therein screw, which has a screw hub with a worm spiral disposed thereon, which forms a heavy-phase conveyor track to this with the Carry out the screw from the drum out of the light phase.

Vollmantelschneckenzentrifugen der oben genannten Art werden dazu verwendet fließfähige Medien mittels Zentrifugalkraft in zumindest eine leichte und eine schwere Phase zu trennen bzw. zu separieren. Während die Trommel mit hoher Drehzahl rotiert und das darin eingebrachte Medium dadurch der Zentrifugalkraft ausgesetzt wird, lagert sich die schwere Phase radial außen in der Trommel ab und die leichte Phase schwimmt darauf radial innen auf. Die schwere Phase wird mit der relativ zur Trommel drehbaren Schnecke aus der Trommel ausgetragen und die leichte Phase mittels etwa einer Wehreinrichtung oder einer Schälscheibe radial innen abgeführt.Solid bowl centrifuges of the above type are used to separate or separate flowable media by means of centrifugal force into at least one light and one heavy phase. As the drum rotates at high speed and the medium introduced therein is thereby subjected to centrifugal force, the heavy phase deposits radially outward in the drum and the light phase floats radially inward thereon. The heavy phase is discharged with the rotatable relative to the drum screw from the drum and the light phase discharged by means of about a weir or a paring disc radially inward.

Bei der Separation von ölhaltigen Medien, wie etwa bei der Olivenölgewinnung, tritt das Problem auf, dass während des Trennprozesses innerhalb der Trommel ein Teil des abgetrennten Öles unter der Einwirkung der Zentrifugalbeschleunigung innerhalb des gebildeten Sediments eingeschlossen bleibt und somit nicht radial nach innen zu der leichten Phase gelangen kann. Um das unter der Einwirkung der Zentrifugalbeschleunigung in der Trommel gebildete Sediment aufzubrechen und dadurch radial für Öl durchlässige Zonen im Medienteich zu schaffen, ist es bekannt, eine Schneckenwendel mit Wendelsegmenten zu verwenden, die entgegen der üblichen Schneckenwindung schräg gestellt sind. Solche Blattsegmente sind z.B. aus WO 02/38278 A bekannt. Die Blattsegmente weisen jedoch insbesondere den Nachteil auf, dass sie einem vergleichsweise hohen Verschleiß unterworfen sind und daher oft gewartet werden müssen.In the separation of oil-containing media, such as olive oil recovery, the problem arises that during the separation process within the drum, a portion of the separated oil under the action of Centrifugal acceleration remains trapped within the sediment formed and thus can not reach radially inward to the light phase. In order to break up the sediment formed in the drum under the effect of centrifugal acceleration and thereby create radially oil-permeable zones in the media pond, it is known to use a spiral helix having helical segments which are skewed against the usual helical turn. Such leaf segments are eg off WO 02/38278 A known. However, the blade segments have the particular disadvantage that they are subject to relatively high wear and therefore often have to be maintained.

Ferner sind ähnliche Vollmantelschneckenzentrifugen aus DE 10 2005 061461 , A1, WO 02 38278 A1 , DE 33 01 099 C2 und US 5653673 A1 bekannt.Furthermore, similar solid bowl centrifuges are out DE 10 2005 061461 , A1, WO 02 38278 A1 . DE 33 01 099 C2 and US 5653673 A1 known.

Zugrundeliegende AufgabeUnderlying task

Der Erfindung liegt die Aufgabe zugrunde, eine Vollmantelschneckenzentrifuge zu schaffen, mittels der im Vergleich zu bekannten Zentrifugen auf kostengünstige Weise und insbesondere mit geringen Wartungskosten eine hohe Ölausbeute erzielt werden kann.The invention has for its object to provide a Vollmantelschneckenzentrifuge, by means of which in comparison to known centrifuges in a cost effective manner and in particular with low maintenance costs, a high oil yield can be achieved.

Erfindungsgemäße LösungInventive solution

Diese Aufgabe ist erfindungsgemäß mit einer Vollmantelschneckenzentrifuge zum Trennen eines Mediums in mindestens eine leichte und eine schwere Phase mit einer drehbaren Trommel und einer darin drehbaren Schnecke gelöst, die eine Schneckennabe mit einer daran angeordneten Schneckenwendel aufweist, welche eine Förderbahn für die schwere Phase bildet, um diese mit der Schnecke aus der leichten Phase heraus aus der Trommel auszutragen. In der Förderbahn ist mindestens ein messerartiges Element angeordnet, welches an der Schneckennabe angeordnet und davon derart weit absteht, dass es im Betrieb der Vollmantelschneckenzentrifuge in das zu trennende Medium eintaucht.This object is achieved in accordance with the invention with a solid bowl screw centrifuge for separating a medium into at least one light and one heavy phase with a rotatable drum and a rotatable screw having a screw hub with a spiral screw disposed thereon forming a heavy phase conveyor to take them out of the drum with the screw out of the light phase. In the conveyor track at least one knife-like element is arranged, which at the Schneckennabe arranged and protrudes from it so far that it dips into the medium to be separated during operation of the solid bowl screw centrifuge.

Erfindungsgemäß taucht innerhalb einer von einer Schnecke geschaffenen Förderbahn für das zu trennende Medium in dieses ein messerartiges Element ein, das an der Schneckennabe angebracht ist. Das messerartige Element ist klingenförmig bzw. plattenförmig gestaltet, wirkt wie eine Klinge bzw. Schneide und durchtrennt bzw. durchschneidet insbesondere jene Sperrschicht, die sonst ein Aufsteigen von leichter Phase nach radial innen verhindern würde. Die erfindungsgemäße Klinge setzt dem in der Trommel umlaufenden Medium aufgrund seiner schneidenden Wirkungsweise einen vergleichsweise geringen Widerstand entgegen und ist daher auch nur geringem Verschleiß unterworfen. Zugleich wird mit dem messerartigen Element ein, wenn auch schmaler Schlitz in die Trennschicht geschnitten, durch den dann leichte Phase aufschwimmen kann. Versuche haben ergeben, dass ein derartiges Schneiden der Trennschicht, wie es erfindungsgemäß vorgesehen ist, vollkommen ausreichend ist, um das gewünschte Trennergebnis zu erzielen.According to the invention, within a conveying path created by a screw for the medium to be separated, a knife-like element which is attached to the screw hub emerges. The knife-like element is designed blade-like or plate-shaped, acts like a blade or cutting edge and cuts or cuts through in particular that barrier layer, which would otherwise prevent an increase from light phase to radially inside. The blade according to the invention sets the circulating in the drum medium due to its cutting action a relatively low resistance and is therefore subject to only little wear. At the same time with the knife-like element, albeit narrow slit cut into the release layer, then float through the then light phase. Experiments have shown that such a cutting of the separating layer, as provided according to the invention, is completely sufficient to achieve the desired separation result.

Das messerartige Element weist insbesondere parallele Seitenflächen bzw. Messerflächen auf, an denen in Umfangsrichtung betrachtet das Medium weitgehend widerstandsfrei entlang gleiten kann.The knife-like element has in particular parallel side surfaces or blade surfaces, on which viewed in the circumferential direction, the medium can slide along resistance largely free.

Die derartigen Messerflächen erstrecken sich ferner vorteilhaft im Wesentlichen parallel zu den benachbarten Flächen der Schneckenwendel. Das erfindungsgemäße messerartige Element ist bevorzugt also an der Schneckennabe genauso ausgerichtet angebracht, wie die benachbarte Schneckenwendel. Das Element wirkt als nicht quer zur Strömung wie ein Paddel, sondern erstreckt sich im Wesentlichen längs der Strömung durch den jeweiligen Wendelgang. Erfindungsgemäß wird dabei vorzugsweise eine durchgehende Schneckenwendel verwendet.The knife surfaces of this type also advantageously extend substantially parallel to the adjacent surfaces of the screw helix. The knife-like element according to the invention is therefore preferably attached to the screw hub aligned as well as the adjacent screw helix. The element acts as not transverse to the flow like a paddle but extends substantially along the flow through the respective helical turn. According to the invention, preferably a continuous spiral screw is used.

Die erfindungsgemäßen Elemente haben nahezu keine Förderwirkung sondern durchtrennen lediglich die genannte Sperrschicht. Dabei kommt es zwar auch zu einer Umwälzung des Mediums selbst, diese Umwälzung ist jedoch aufgrund der schneidenden Wirkung der erfindungsgemäßen Elemente vergleichsweise gering. Dies ist ebenfalls ein Vorteil der erfindungsgemäßen Lösung, denn eine übermäßige Umwälzung im Medium würde lediglich die zuvor erzielte Separation in leichte und schwere Phase wieder verschlechtern.The elements according to the invention have almost no conveying action but merely sever the said barrier layer. Although this also leads to a circulation of the medium itself, this circulation is relatively low due to the cutting action of the elements according to the invention. This is also an advantage of the solution according to the invention, because an excessive circulation in the medium would only worsen the previously achieved separation into light and heavy phase again.

Erfindungsgemäß bevorzugt sind mehrere messerartige Elemente nebeneinander mit parallel ausgerichteten Flächen in einem Fördergang bzw. Schneckengang vorgesehen. Besonders bevorzugt sind es drei solcher Elemente nebeneinander. Es entsteht mit den derart angeordneten Elementen eine Art Kamm, der in das Medium Schnitte mit geringen Abständen einbringt. Durch diese Schnitte bzw. Schlitze kann dann die leichte Phase hindurch nach radial innen wandern.According to the invention, a plurality of knife-like elements are preferably provided next to one another with surfaces aligned in parallel in a conveying passage or screw flight. Particularly preferably, there are three such elements side by side. It arises with the elements arranged in this way a kind of comb, which introduces cuts into the medium at short intervals. Through these cuts or slots, the light phase can then move radially inward.

Die messerartigen Elemente sind erfindungsgemäß auf einer Grundplatte montiert, die an der Schneckennabe austauschbar ortsfest angebracht, insbesondere dort angeschraubt, ist. Solche Grundplatten sind ferner vorzugsweise in vier aufeinander folgenden Schneckengängen angebracht.The knife-like elements are mounted according to the invention on a base plate, which is attached to the screw hub exchangeably fixed, in particular screwed there is. Such base plates are also preferably mounted in four successive flights.

Die Schnecke der erfindungsgemäßen Vollmantelschneckenzentrifuge hat in der Regel einen zylindrischen Bereich und einen konischen Bereich, wobei die erfindungsgemäßen Elemente vorzugsweise im zylindrischen Bereich der Schnecke angeordnet sind. Ferner sind die Elemente an der Schneckennabe vorzugsweise in einem Bereich axial außerhalb eines Einlassbereichs zum Einführen des zu zentrifugierenden Mediums vorgesehen. Der Einlassbereich ist mit Öffnungen in der Schneckennabe gestaltet, durch die Medium, welches radial innen in die Schneckennabe zugeführt wurde, nach radial außen in den Trennraum zwischen Schneckennabe und Trommelwand gelangen kann.The screw of the solid bowl screw centrifuge according to the invention generally has a cylindrical region and a conical region, wherein the elements according to the invention are preferably arranged in the cylindrical region of the screw. Furthermore, the elements on the screw hub are preferably provided in an area axially outside an inlet area for introducing the medium to be centrifuged. The inlet region is designed with openings in the screw hub, through which medium, which was supplied radially inward into the screw hub, can pass radially outward into the separation space between the screw hub and the drum wall.

Das messerartige Element ist vorzugsweise mit einer in die Drehrichtung der Schnecke relativ zur Trommel weisenden Vorderkante versehen, die scharf gestaltet ist. Die derartige Vorderkante bildet eine Schneidkante, welche das Medium und die sich darin befindende Sperrschicht weitgehend reibungsarm durchtrennt.The knife-like element is preferably provided with a pointing in the direction of rotation of the screw relative to the drum leading edge, which is designed sharply. The front edge of this type forms a cutting edge, which cuts through the medium and the barrier layer located therein in a largely friction-free manner.

Das messerartige Element ist ferner bevorzugt mit einer in die Drehrichtung der Schnecke relativ zur Trommel weisenden Vorderkante versehen, die sich relativ zur Radialrichtung der Schnecke schräg erstreckt. Die derartig schräge Vorderkante führt zu einem ziehenden oder schiebenden Schnitt an dem erfindungsgemäßen messerartigen Element, wodurch sich dessen Trennverhalten weiter verbessert und insbesondere besonders reibungsarm wird. Besonders bevorzugt ist ein ziehender Schnitt, wofür die Vorderkante entgegen der Drehrichtung der Schnecke relativ zur Trommel von radial innen nach radial außen weggeschwenkt ist.The knife-like element is further preferably provided with a leading edge pointing in the direction of rotation of the screw relative to the drum, which extends obliquely relative to the radial direction of the screw. The thus oblique front edge leads to a pulling or pushing cut on the knife-like element according to the invention, whereby its separation behavior is further improved and in particular becomes particularly low in friction. Particularly preferred is a pulling section, for which the leading edge is pivoted away from the direction of rotation of the screw relative to the drum from radially inward to radially outward.

Die in die Drehrichtung der Schnecke relativ zur Trommel weisende Vorderkante ist bevorzugt gerade gestaltet. Die derartige Schneidkante kann besonders kostengünstig hergestellt und auch kostengünstig geschärft werden.The pointing in the direction of rotation of the screw relative to the drum leading edge is preferably straight. The cutting edge of this kind can be produced particularly inexpensively and can also be sharpened cost-effectively.

Das messerartige Element ist vorzugsweise mit einer entgegen der Drehrichtung der Schnecke relativ zur Trommel weisenden Rückenkante versehen, die stumpf gestaltet ist. Die derartige Rückenkante bildet also einen stumpfen Messerrücken. An diesem Messerrücken wird von dem erfindungsgemäßen Element ein Schlitz gebildet, durch den insbesondere Öl von radial außen nach radial innen aufsteigen kann. Der Schlitz verschließt sich zwar mit dem Weiterwandern des erfindungsgemäß umlaufenden Elements nachfolgend wieder teilweise, es bleibt aber dennoch ausreichend Zeit, damit stetig Öl aufsteigen kann. Dies gilt insbesondere dann, wenn mehrere erfindungsgemäße Elemente in einem Schneckengang nebeneinander angeordnet sind.The knife-like element is preferably provided with a counter to the direction of rotation of the screw relative to the drum facing back edge, which is designed dull. The such back edge thus forms a dull back of the knife. At this knife back of the inventive element, a slot is formed through which in particular oil can rise from radially outside to radially inside. Although the slot closes again partially with the Weiterwandern of the present invention rotating element, it still remains sufficient time so that oil can rise steadily. This is especially true when several elements of the invention are arranged side by side in a screw.

Das messerartige Element ist ferner bevorzugt mit einer entgegen der Drehrichtung der Schnecke relativ zur Trommel weisenden Rückenkante versehen, die sich im Wesentlichen parallel zur Radialrichtung und in Drehrichtung der Schnecke zurückgesetzt erstreckt. Die derartige Rückenkante schaffte eine stabile, breite Klinge für das erfindungsgemäße Element und unterstützt die erfindungsgemäß bevorzugte ziehende Schneidwirkung.The knife-like element is further preferably provided with a counter to the direction of rotation of the screw relative to the drum facing the rear edge, which extends substantially parallel to the radial direction and in the direction of rotation of the screw set back. Such back edge provided a stable, wide blade for the element according to the invention and supports the preferred pulling cutting action according to the invention.

Die entgegen der Drehrichtung der Schnecke relativ zur Trommel weisende Rückenkante ist bevorzugt gerade gestaltet. Die derartige Rückenkante kann ebenfalls besonders kostengünstig hergestellt werden.The opposite to the direction of rotation of the screw relative to the drum facing back edge is preferably designed straight. The back edge of this type can likewise be produced in a particularly cost-effective manner.

Das messerartige Element ist ebenso vorteilhaft mit einer in die Drehrichtung der Schnecke relativ zur Trommel weisenden Vorderkante und einer entgegen der Drehrichtung der Schnecke relativ zur Trommel weisenden Rückenkante versehen, wobei die Vorderkante und die Rückenkante von radial innen nach radial außen betrachtet sich einander zugewandt gestaltet sind. Es ist auf diese Weise ein in der Seitenansicht V-förmiges, flächiges Element gebildet, welches an seiner breiten Seite an der Schneckennabe befestigt ist und dadurch eine große Steifigkeit aufweist.The knife-like element is also advantageously provided with a pointing in the direction of rotation of the screw relative to the drum leading edge and opposite to the direction of rotation of the screw relative to the drum facing back edge, wherein the front edge and the back edge are designed radially inward to radially outwardly facing each other , It is formed in this way a V-shaped in the side view, sheet-like element which is attached to its broad side on the screw hub and thereby has a high rigidity.

Alternativ oder zusätzlich ist das messerartige Element mit einer bezogen auf die Schneckennabe radial äußeren Außenkante gestaltet, die sich im Wesentlichen tangential erstreckt. Die derart tangential ausgerichtete Außenkante ist vorzugsweise insbesondere wegen der in Drehrichtung zurückgesetzter Rückenkante radial nach innen versetzt. Die Außenkante beginnt bevorzugt zurückgesetzt hinter der Radialrichtung der Schneckennabe und unterstützt dadurch ebenfalls die gewünschte ziehende Schnittwirkung. Die derartige Außenkante schafft ferner für das an ihr entlang gleitende Medium einen Hebeeffekt, mittels dem Medium von radial innen nach radial außen gefördert wird. Die Außenkante ist ferner vorzugsweise radial weniger hoch als die Schneckenwendel selbst. Sie kann also auch weniger weit in das Medium eintauchen, als die Schneckenwendel.Alternatively or additionally, the knife-like element is designed with a radial outer edge relative to the screw hub, which extends substantially tangentially. The thus tangentially oriented outer edge is preferably offset radially inwardly, in particular because of the setback in the direction of rotation. The outer edge preferably begins behind the radial direction of the screw hub and thus also supports the desired pulling cutting action. The outer edge of this type also provides a lifting effect for the medium sliding along it, by means of which medium is conveyed from radially inward to radially outward. The outer edge is also preferably less radially than the radially outer edge Helix itself. So it can also dive less far into the medium, as the helix.

Die bezogen auf die Schneckennabe radial äußere Außenkante ist vorzugsweise gerade gestaltet. Auch die derartige Außenkante kann sehr kostengünstig hergestellt werden, so dass insgesamt das erfindungsgemäße Element besonders kostengünstig und verschnittarm aus einem Blech gefertigt werden kann.The relative to the screw hub radially outer edge is preferably designed straight. The outer edge of this type can also be produced very inexpensively, so that overall the element according to the invention can be manufactured from a sheet metal in a particularly cost-effective and low-grade manner.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

Nachfolgend wird ein Ausführungsbeispiel der erfindungsgemäßen Lösung anhand der beigefügten schematischen Zeichnungen näher erläutert. Es zeigt:

Fig. 1
eine Abwicklung eines Abschnitts einer Schnecke eines Ausführungsbeispiels einer erfindungsgemäßen Vollmantelschneckenzentrifuge und
Fig. 2
einen Querschnitt der Schnecke gemäß Fig. 1.
An exemplary embodiment of the solution according to the invention will be explained in more detail below with reference to the attached schematic drawings. It shows:
Fig. 1
a development of a portion of a screw of an embodiment of a solid bowl screw centrifuge according to the invention and
Fig. 2
a cross section of the screw according to Fig. 1 ,

Detaillierte Beschreibung des AusführungsbeispielsDetailed description of the embodiment

In den Fig. ist von einer Vollmantelschneckenzentrifuge 10 deren Schnecke 12 dargestellt. Die Schnecke 12 ist aus einer rohrförmigen bzw. hohlzylindrischen Schneckennabe 14 gebildet, die außenseitig von einer Schneckenwendel 16 umgeben ist. Die Schneckenwendel 16 erstreckt sich dabei als gewundenes Blech von der Schneckennabe 14 nach radial außen im rechten Winkel oder mit einem leicht von der Senkrechten abweichenden Winkel derart weit abstehend, dass sie die zugehörige (nicht dargestellte) Trommel der Vollmantelschneckenzentrifuge 10 nahezu berührt.In the figure, from a solid bowl screw centrifuge 10 whose screw 12 is shown. The screw 12 is formed from a tubular or hollow cylindrical screw hub 14, which is surrounded on the outside by a screw helix 16. The worm gear 16 extends as a wound sheet of the screw hub 14 radially outward at right angles or with a slightly deviating from the vertical angle so far protruding that it almost touches the associated (not shown) drum of the solid bowl worm centrifuge 10.

Im Betrieb der Vollmantelschneckenzentrifuge taucht die Schneckenwendel 16 in ein sich in der zugehörigen Trommel befindendes Medium ein und fördert aus diesem eine sich separierende schwere Phase aus einer sich radial innen sammelnden leichten Phase heraus.During operation of the solid bowl screw centrifuge, the screw flight 16 dips into a medium located in the associated drum and discharges this a separating heavy phase out of a radially inwardly collecting light phase out.

Zum Einführen des Mediums in die Trommel sind dabei in der Schneckennabe 14 drei Einlassöffnungen 18 ausgebildet, durch die hindurch Medium von radial innen aus der Schneckennabe 14 nach radial außen gelangen kann, um dort getrennt zu werden.In order to introduce the medium into the drum, three inlet openings 18 are formed in the screw hub 14, through which medium can pass radially inwards from the inside of the screw hub 14 in order to be separated there.

Mit den Windungen der Schneckenwendel 16 sind Förderbahnen gebildet, durch die das Medium und insbesondere die schwere Phase transportiert werden. Im Bereich dieser Förderbahnen sind insgesamt siebenundzwanzig messeartige Elemente 20 in Gruppen zu je drei Elementen an neun Grundplatten 22 ortsfest angeordnet und mit diesen Grundplatten 22 an die Schneckennabe 14 montiert. Die rechteckigen, leicht gewölbten Grundplatten 22 sind in einem Winkelabstand von 120° am Umfang der Schneckennabe 14 in den Förderbahnen verteilt und mittels je vier Schrauben 24 an ihren Ecken mit der Schneckennabe 14 ortsfest und dennoch austauschbar verschraubt.With the turns of the screw helix 16 conveyor tracks are formed, through which the medium and in particular the heavy phase are transported. In the area of these conveyor tracks a total of twenty-seven scale-like elements 20 are arranged in groups of three elements on nine base plates 22 stationary and mounted with these base plates 22 to the screw hub 14. The rectangular, slightly curved base plates 22 are distributed at an angular distance of 120 ° at the periphery of the screw hub 14 in the conveyor tracks and by means of four screws 24 at its corners with the screw hub 14 stationary and screwed interchangeable.

Das einzelne messerartige Element 20 ist (siehe Fig. 2) als eine Klinge mit einer geraden, scharfen Vorderkante 26, einer geraden, stumpfen Rückenkante 28 und einer geraden radial äußeren Außenkante 30 gestaltet. Die Vorderkante 26 ist entgegen der Drehrichtung der Schnecke 12 relativ zur Trommel von radial innen nach radial außen geschwenkt angeordnet. Die Schrägstellung der Vorderkante 26 beträgt ca. 30° und ist dabei so weit, dass die Außenkante 30 erst hinter der zu dieser Grundplatte 22 gehörenden Radialrichtung 32 beginnt. Die Außenkante 30 erstreckt sich von dort ausgehend dann tangential noch über vorzugsweise 1/3 der gesamten Umfangsbreite der Klinge des messerartigen Elements 20.The single knife-like element 20 is (see Fig. 2 ) is designed as a blade having a straight, sharp leading edge 26, a straight, blunt back edge 28, and a straight radially outer, outer edge 30. The front edge 26 is arranged counter to the direction of rotation of the worm 12 relative to the drum from radially inward to radially outward. The inclination of the front edge 26 is about 30 ° and is so far that the outer edge 30 begins only behind belonging to this base plate 22 radial direction 32. The outer edge 30 then extends tangentially from there over preferably 1/3 of the entire circumferential width of the blade of the knife-like element 20.

Die Rückenkante 28 erstreckt sich parallel zu der Radialrichtung 32 und begrenzt die Außenkante 30 radial außen knapp unterhalb des Radius der Schneckenwendel 16.The back edge 28 extends parallel to the radial direction 32 and limits the outer edge 30 radially outwardly just below the radius of the helix 16.

Zum Befestigen der derartigen Klinge des messerartigen Elements 20 an der Grundplatte 22 ist an den der Grundplatte 22 zugewandten Enden der Vorderkante 26 und der Rückenkante 28 je ein Stift 34 ausgebildet, der in eine zugehörige Öffnung 36 an der Grundplatte 22 eintaucht. Die Öffnungen 36 dienen so zum Positionieren der messerartigen Elemente 20 an den Grundplatten 22 und erleichtern deren Montage erheblich.To attach such a blade of the knife-like element 20 to the base plate 22 is at the base plate 22 facing the ends of the front edge 26 and the back edge 28 each formed a pin 34 which dips into an associated opening 36 on the base plate 22. The openings 36 thus serve to position the knife-like elements 20 on the base plates 22 and facilitate their assembly considerably.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
VollmantelschneckenzentrifugeSolid bowl screw centrifuge
1212
Schneckeslug
1414
Schneckennabescrew hub
1616
Schneckenwendelscrew spiral
1818
Einlassöffnunginlet port
2020
messerartiges Elementknife-like element
2222
Grundplattebaseplate
2424
Schraubescrew
2626
Vorderkanteleading edge
2828
Rückenkantespine edge
3030
Außenkanteouter edge
3232
Radialrichtungradial direction
3434
Stiftpen
3636
Öffnung in der GrundplatteOpening in the base plate

Claims (10)

  1. A solid bowl screw centrifuge (10) for separating a medium into at least one light phase and one heavy phase, with a rotatable drum and a screw (12) which is rotatable therein and exhibits a screw hub (14) with a screw helix (16) arranged thereon, which forms a conveyance path for the heavy phase in order to discharge the heavy phase from the light phase out of the drum by means of the screw (12),
    wherein at least one cutting edge-like element (20) is arranged in the conveyance path, which is arranged on the screw hub (14) and protrudes therefrom to such an extent that it is immersed in the medium to be separated during operation of the solid bowl screw centrifuge (10), characterized in that the at least one cutting edge-like element (20) is mounted on a base plate (22) attached to the screw hub (14) to be stationary and exchangeable.
  2. The solid bowl screw centrifuge according to claim 1,
    characterized in that the base plate (22) is screwed to the screw hub (14).
  3. The solid bowl screw centrifuge according to claim 2,
    characterized in that the cutting edge-like element (20) is provided with a front edge (26) pointing into the direction of rotation of the screw (12) relative to the drum, which extends obliquely relative to the radial direction of the screw (12).
  4. The solid bowl screw centrifuge according to claim 2 or 3,
    characterized in that the front edge (26) pointing into the direction of rotation of the screw (12) relative to the drum is configured to be straight.
  5. The solid bowl screw centrifuge according to any one of claims 1 to 4,
    characterized in that the cutting edge-like element (20) is provided with a rear edge (28) pointing oppositely to the direction of rotation of the screw (12) relative to the drum, which is configured to be blunt.
  6. The solid bowl screw centrifuge according to any one of claims 1 to 5,
    characterized in that the cutting edge-like element (20) is provided with a rear edge (28) pointing oppositely to the direction of rotation of the screw (12) relative to the drum, which extends substantially in parallel to the radial direction and is set back in the direction of rotation of the screw (12).
  7. The solid bowl screw centrifuge according to claim 5 or 6,
    characterized in that the rear edge (28) pointing oppositely to the direction of rotation of the screw (12) relative to the drum is configured to be straight.
  8. The solid bowl screw centrifuge according to any one of claims 1 to 7,
    characterized in that the cutting edge-like element (20) is provided with a front edge (26) pointing into the direction of rotation of the screw (12) relative to the drum and a rear edge (28) pointing oppositely to the direction of rotation of the screw (12) relative to the drum, wherein the front edge (26) and the rear edge (28), as seen from radially inside toward radially outside, are configured to be facing each other.
  9. The solid bowl screw centrifuge according to any one of claims 1 to 8,
    characterized in that the cutting edge-like element (20) is configured to have a radially external outer edge (30) with respect to the screw hub (14), which extends substantially tangentially.
  10. The solid bowl screw centrifuge according to claim 9,
    characterized in that the radially external outer edge (30) with respect to the screw hub (14) is configured to be straight.
EP11008664.2A 2011-10-28 2011-10-28 Solid bowl screw centrifuge with a screw Active EP2586533B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES11008664T ES2754754T3 (en) 2011-10-28 2011-10-28 Solid jacketed screw centrifuge with one screw
EP11008664.2A EP2586533B1 (en) 2011-10-28 2011-10-28 Solid bowl screw centrifuge with a screw
PT110086642T PT2586533T (en) 2011-10-28 2011-10-28 Solid bowl screw centrifuge with a screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11008664.2A EP2586533B1 (en) 2011-10-28 2011-10-28 Solid bowl screw centrifuge with a screw

Publications (2)

Publication Number Publication Date
EP2586533A1 EP2586533A1 (en) 2013-05-01
EP2586533B1 true EP2586533B1 (en) 2019-08-14

Family

ID=45065576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11008664.2A Active EP2586533B1 (en) 2011-10-28 2011-10-28 Solid bowl screw centrifuge with a screw

Country Status (3)

Country Link
EP (1) EP2586533B1 (en)
ES (1) ES2754754T3 (en)
PT (1) PT2586533T (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106475234B (en) * 2015-08-26 2018-10-26 苏州瑞威离心分离技术有限公司 Horizontal spiral discharge sedimentation centrifuge
US20230001429A1 (en) * 2019-12-19 2023-01-05 Flottweg Se Screw hub, centrifuge screw and solid bowl screw centrifuge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5653673A (en) * 1994-06-27 1997-08-05 Amoco Corporation Wash conduit configuration in a centrifuge apparatus and uses thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301099A1 (en) * 1983-01-14 1984-12-06 KHD Humboldt Wedag AG, 5000 Köln Apparatus for dehumidifying sludge in the centrifugal field of a solid bowl centrifuge
DE10055798A1 (en) * 2000-11-10 2002-05-23 Westfalia Separator Ind Gmbh Screw used for a screw-type solid bowl centrifuge comprises additional leaf segments in some sections of a conveyor path between adjacent spirals, and in the area of the segments a screw leaf with recesses
DE102005061461A1 (en) * 2005-12-22 2007-07-05 Westfalia Separator Ag Solid bowl-helical conveyor centrifuge for separating oil from solid/water mixture, exhibits rotatable drum with a tapering cylindrical area, and a rotatable helical conveyor with a conveyor body surrounded by main conveyor sheet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5653673A (en) * 1994-06-27 1997-08-05 Amoco Corporation Wash conduit configuration in a centrifuge apparatus and uses thereof

Also Published As

Publication number Publication date
PT2586533T (en) 2019-11-21
EP2586533A1 (en) 2013-05-01
ES2754754T3 (en) 2020-04-20

Similar Documents

Publication Publication Date Title
EP2036613B1 (en) Stirring ball mill
EP2651619B1 (en) Apparatus for continuous filtering of mixed materials
EP2188532B1 (en) Pump rotor and pump comprising a pump rotor of said type
EP2950932B1 (en) Solid-wall screw centrifuge having a weir edge
DE202010001758U1 (en) screw press
DE2901112A1 (en) SLICER, IN PARTICULAR MEAT MINER
DE2840337B2 (en) Cutting set for meat grinders or the like.
EP2586533B1 (en) Solid bowl screw centrifuge with a screw
EP3670920A1 (en) Cutting mechanism for a submersible waste water pump
DE3010952A1 (en) DISC SORTER FOR CLEANING FIBER SUSPENSIONS
EP3579976B1 (en) Comminuting device
EP1260273B1 (en) Solid-bowl screw centrifuge
AT398282B (en) CENTRIFUGE
DE2013499A1 (en) Arrangement for a cyclone separator with an emptying chamber
EP2659985B2 (en) Solid bowl worm centrifuge with a weir edge
DE102014108722A1 (en) screw centrifuge
EP2195268B1 (en) Devices for laying printed products onto a conveyor belt, comprising a bladed wheel
DE2154353C2 (en) Cutting machine for meat products or the like.
EP3253554B1 (en) Stuffing screw
DE202010016792U1 (en) Device for continuous filtering of material mixtures
EP3105045B1 (en) Screw press separator
LU102840B1 (en) Cutting ring for a pump liquid loaded with solids
DE202013006419U1 (en) knife
DE1769636C3 (en) Centrifuge for separating a mixture of phases of different densities
DE2123778C3 (en) Tea processing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20131025

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180228

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190314

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1166387

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190815

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502011015990

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 2586533

Country of ref document: PT

Date of ref document: 20191121

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20191112

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190814

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191114

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191114

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191214

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20190403487

Country of ref document: GR

Effective date: 20200213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2754754

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20200420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011015990

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191031

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191028

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191031

26N No opposition filed

Effective date: 20200603

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20191031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20191114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191028

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191114

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1166387

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111028

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190814

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20231018

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231110

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20231009

Year of fee payment: 13

Ref country code: DE

Payment date: 20231030

Year of fee payment: 13