EP3105045B1 - Screw press separator - Google Patents

Screw press separator Download PDF

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Publication number
EP3105045B1
EP3105045B1 EP15703610.4A EP15703610A EP3105045B1 EP 3105045 B1 EP3105045 B1 EP 3105045B1 EP 15703610 A EP15703610 A EP 15703610A EP 3105045 B1 EP3105045 B1 EP 3105045B1
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EP
European Patent Office
Prior art keywords
wear ring
screen
chamber
screw
sieve
Prior art date
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EP15703610.4A
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German (de)
French (fr)
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EP3105045A1 (en
Inventor
Otto Roiss
Dietrich Eichler
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Roehren und Pumpenwerk Bauer GmbH
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Roehren und Pumpenwerk Bauer GmbH
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Priority to PL15703610T priority Critical patent/PL3105045T3/en
Publication of EP3105045A1 publication Critical patent/EP3105045A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/127—Feed means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers

Definitions

  • the present invention relates to a screw press separator for separating solid components from a slurry containing solid and liquid components.
  • Screw press separators are used to squeeze out a pulp.
  • the slurry can in particular be liquid manure or waste water.
  • the wastewater can come from both municipal and industrial plants, whereby these should always be separated into solid and liquid components.
  • a cylindrical screen is usually arranged in the housing of the press screw separators, within which a screw rotates. By means of the screw, the pulp is conveyed through the press screw separator and pressed. The liquid fractions of the pulp pass through the sieve, while a solid plug forms inside the sieve. The solid plug is conveyed to one end of the press screw separator by the rotating screw in order to be discharged there.
  • the pamphlet DE10342684 A1 shows a previously known screw press separator.
  • this screw press separator according to the preamble of claim 1, several slots are formed at the transition from the housing to the sieve chamber.
  • the slots form an angle to the screw rotating above, which promotes the thrust and shear effects.
  • the slots are integral elements molded into the housing.
  • the object is thus achieved by a screw press separator for separating solid components from a pulp containing solid and liquid components.
  • the screw press separator comprises a housing with an inlet chamber and a sieve chamber.
  • the inlet chamber merges into the sieve chamber.
  • an inlet for the pulp, an outlet for the solid constituents and an outlet for the liquid constituents are formed on the housing.
  • a screen in particular a cylindrical screen, is arranged in the screen chamber.
  • a screw extends through the inlet chamber and into the screen. The screw can rotate about a longitudinal axis of the sieve. As the screw rotates, the pulp is pressed out along the sieve.
  • the screw is preferably driven by a motor, the inlet chamber being located between the motor and the sieve chamber.
  • a wear ring is arranged at the transition from the inlet chamber to the sieve chamber.
  • the worm extends through this wear ring.
  • the wear ring is attached to the housing and can be replaced.
  • the wear ring can be attached to the inlet chamber.
  • Several cutting edges are formed on the inner circumference of the wear ring. The very narrow gap between the outer edges of the screw threads and these cutting edges leads to a shear effect and thus to a breaking up of long-fiber solids in the pulp. This largely avoids clogging of the sieve.
  • the wear ring is attached to the housing in an exchangeable manner and can easily be exchanged after corresponding wear.
  • the wear ring is arranged as an axial stop for the sieve.
  • a largest diameter of the wear ring is greater than a smallest diameter of the sieve.
  • One end face of the screen can thus rest against the wear ring.
  • the wear ring according to the invention With its cutting edges, not only serves to break up long-fiber constituents of the pulp but also serves at the same time as an axial stop for the sieve.
  • Such an axial stop for the sieve is also subject to increased wear. With only one component, namely the wear ring, two wear-prone parts of the press screw separator, namely the cutting edges and the axial stop, are formed.
  • the wear ring has a first length.
  • the entire screw has a second length.
  • the two lengths are measured in the longitudinal direction of the sieve. It is preferably provided that the first length is a maximum of 10%, preferably a maximum of 5%, of the second length. This ensures that the wear ring according to the invention has a relatively small structure and thus only the component of the press screw separator that is subject to wear is replaced.
  • the wear ring and the cutting edges are arranged in front of the sieve and do not extend into the sieve.
  • the wear ring is therefore only located in the transition area from the inlet chamber to the sieve chamber and does not extend into the sieve. In this transition area in particular, the cutting edges are necessary, since here the long-fiber components can be processed before they enter the sieve.
  • the wear ring is preferably screwed to the housing.
  • several screw connections are provided in particular, which extend parallel to the longitudinal axis of the sieve. The screw connection enables the wear ring to be exchanged easily.
  • the wear ring is a one-piece, closed ring.
  • the cutting edges are an integral part of the closed ring.
  • the entire wear ring is a cast component.
  • This cast component is fitted into the housing by appropriate machining.
  • a wear ring for the press screw separator is also disclosed.
  • This wear ring is used in a press screw separator as described above.
  • the wear ring as a separate, economically tradable component, is designed to be arranged at the transition area from the inlet chamber to the sieve chamber.
  • the wear ring is attached so that it can be replaced.
  • Several cutting edges are formed on the inner circumference of the wear ring.
  • the press screw separator 1 comprises a housing 2. An inlet chamber 3 and a sieve chamber 4 are formed in the housing 2. The inlet chamber 3 merges into the sieve chamber 4.
  • the housing 2 comprises an inlet 5 on the inlet chamber 3. This inlet 5 is used to fill in a slurry.
  • An outlet 6 and an outlet 7 are formed on the sieve chamber 4. The outlet 6 is used with a corresponding mechanism for discharging the separated solids in batches. The liquid component separated from the pulp flows out of the housing 2 via the outlet 7.
  • a gear 11 is flanged to the housing 2.
  • the transmission 11 is in turn driven by a motor 12.
  • the inlet chamber 3 is located between the gearbox-motor unit and the sieve chamber 4.
  • a screw 9 extends from the gear mechanism 11 through the inlet chamber 3 into the sieve chamber 4.
  • a hollow cylindrical sieve 8 is arranged in the sieve chamber 4. Both the sieve 8 and the screw 9 extend along a longitudinal axis 10.
  • the pulp to be separated is poured in via the inlet 5.
  • This pulp is conveyed by the rotating screw 9 in the direction of the outlet 6.
  • a solid plug forms in the area of the outlet 6.
  • the corresponding liquid components of the pulp pass through the sieve 8 radially outwards and flow off via the outlet 7.
  • a wear ring 13 is located at the transition from the inlet chamber 3 to the sieve chamber 4.
  • Fig. 2 shows in detail the design and arrangement of this wear ring 13.
  • the wear ring 13 is a one-piece cast and machined machined component.
  • a plurality of ribs 14 are formed on the inner circumference of the wear ring 13.
  • the wear ring 13 comprises an angular region 15 on its outer circumference.
  • the wear ring 13 is fastened in the housing 2 via this angular region 15. It is fastened by means of screw connections 16. By means of these screw connections 16, the wear ring 13 can easily be exchanged.
  • Fig. 2 shows Fig. 2 that the diameter of the sieve 8 and the diameter of the wear ring 13 are selected so that the sieve 8 strikes the wear ring 13 in the axial direction.
  • the wear ring 13 thus serves as an axial stop for the sieve 8.
  • Fig. 3 shows the in Fig. 2 marked section A: A.
  • each rib 14 forms two cutting edges 17.
  • the cutting edges 17 are thus formed by the ribs 14.
  • the cutting edges 17 extend parallel to the longitudinal axis 10.
  • the outer edges of the spirals of the worm 9 move over these cutting edges 17 with only a very small distance.
  • a corresponding shear load acts on, in particular, long-fiber components in the pulp during the transition from the inlet chamber 3 to the sieve chamber 4.
  • a multiplicity of ribs 14, preferably more than 20, is provided.
  • the narrow gap between the cutting edges 17 and the outer edges of the spirals of the screw 9 is preferably 0.1 to 0.5 mm.
  • Fig. 2 shows a first length 18 of the wear ring 13 measured in the direction of the longitudinal axis 10.
  • Fig. 1 shows a second length 19 of the entire screw 9, also measured in the direction of the longitudinal axis 10.
  • the comparison of these two lengths 18, 19 shows that the wear ring 13 occupies only a small fraction of the second length 19 of the screw 9 in the direction of the longitudinal axis 10.
  • the first length 18 is a maximum of 10%, preferably a maximum of 5%, of the second length 19.
  • the wear ring 13 does not extend into the sieve 8. Rather, the wear ring 13 ends in front of the sieve 18 and can thus also form a stop for the sieve 18.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Description

Die vorliegende Erfindung betrifft einen Pressschneckenseparator zur Abscheidung fester Bestandteile aus einer feste und flüssige Bestandteile enthaltenden Trübe. Pressschneckenseparatoren werden zum Auspressen einer Trübe verwendet. Die Trübe kann insbesondere Gülle oder Abwasser sein. Die Abwässer können sowohl aus kommunalen als auch aus industriellen Anlagen stammen, wobei diese stets in feste und flüssige Bestandteile getrennt werden sollen. In dem Gehäuse der Pressschneckenseparatoren ist üblicherweise ein zylindrisches Sieb angeordnet, innerhalb dessen eine Schnecke rotiert. Mittels der Schnecke wird die Trübe durch den Pressschneckenseparator gefördert und gepresst. Durch das Sieb hindurch treten die flüssigen Anteile der Trübe, während sich innerhalb des Siebes ein Feststoffpfropfen ausbildet. Durch die rotierende Schnecke wird der Feststoffpfropfen an ein Ende des Pressschneckenseparators gefördert, um dort ausgegeben zu werden.The present invention relates to a screw press separator for separating solid components from a slurry containing solid and liquid components. Screw press separators are used to squeeze out a pulp. The slurry can in particular be liquid manure or waste water. The wastewater can come from both municipal and industrial plants, whereby these should always be separated into solid and liquid components. A cylindrical screen is usually arranged in the housing of the press screw separators, within which a screw rotates. By means of the screw, the pulp is conveyed through the press screw separator and pressed. The liquid fractions of the pulp pass through the sieve, while a solid plug forms inside the sieve. The solid plug is conveyed to one end of the press screw separator by the rotating screw in order to be discharged there.

Die Druckschrift DE10342684 A1 zeigt einen vorbekannten Pressschneckenseparator. Bei diesem Pressschneckenseparator gemäß dem Oberbegriff des Anspruchs 1, sind am Übergang des Gehäuses in die Siebkammer mehrere Schlitze ausgebildet. Die Schlitze bilden einen die Schub- und Scherwirkung begünstigenden Winkel zur sich darüber drehenden Schnecke. Die Schlitze sind integrale, in das Gehäuse gegossene Elemente.The pamphlet DE10342684 A1 shows a previously known screw press separator. In this screw press separator according to the preamble of claim 1, several slots are formed at the transition from the housing to the sieve chamber. The slots form an angle to the screw rotating above, which promotes the thrust and shear effects. The slots are integral elements molded into the housing.

EP 2 561 981 A2 zeigt einen Schneckenförderer mit einem Verschleißelement, das an einer Kante angeordnet ist. EP 2 561 981 A2 Figure 3 shows a screw conveyor with a wear element located on one edge.

Es ist Aufgabe der vorliegenden Erfindung, einen Pressschneckenseparator bereitzustellen, der bei kostengünstiger Herstellung und wartungsarmem Betrieb verschleißoptimiert konstruiert ist.It is the object of the present invention to provide a press screw separator which is designed to be wear-optimized while being inexpensive to manufacture and operate with little maintenance.

Die Lösung der Aufgabe erfolgt durch den Anspruch 1. Die abhängigen Ansprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The object is achieved by claim 1. The dependent claims contain advantageous developments of the invention.

Somit wird die Aufgabe gelöst durch einen Pressschneckenseparator zur Abscheidung fester Bestandteile aus einer feste und flüssige Bestandteile enthaltenden Trübe. Der Pressschneckenseparator umfasst ein Gehäuse mit einer Einlasskammer und einer Siebkammer. Die Einlasskammer geht dabei in die Siebkammer über. Des Weiteren sind am Gehäuse ein Einlass für die Trübe, ein Auslass für die festen Bestandteile und ein Ablauf für die flüssigen Bestandteile ausgebildet. In der Siebkammer ist ein, insbesondere zylindrisches, Sieb angeordnet. Durch die Einlasskammer und in das Sieb erstreckt sich eine Schnecke. Die Schnecke ist um eine Längsachse des Siebes drehbeweglich. Mit der Drehbewegung der Schnecke wird die Trübe entlang des Siebes ausgepresst. Der Antrieb der Schnecke erfolgt bevorzugt über einen Motor, wobei sich die Einlasskammer zwischen dem Motor und der Siebkammer befindet. Erfindungsgemäß ist vorgesehen, dass am Übergang von der Einlasskammer in die Siebkammer ein Verschleißring angeordnet ist. Die Schnecke erstreckt sich durch diesen Verschleißring hindurch. Der Verschleißring ist am Gehäuse auswechselbar befestigt. Insbesondere ist der Verschleißring an der Einlasskammer befestigbar. Am Innenumfang des Verschleißrings sind mehrere Schneidekanten ausgebildet. Der sehr enge Spalt zwischen den äußeren Kanten der Schneckenwendeln und diesen Schneidekanten führt zu einer Scherwirkung und somit zu einem Zerteilen langfaseriger Feststoffe in der Trübe. Dadurch wird ein Zusetzen des Siebes weitestgehend vermieden. Erfindungsgemäß ist der Verschleißring am Gehäuse auswechselbar befestigt und kann nach entsprechendem Verschleiß ohne weiteres ausgewechselt werden.The object is thus achieved by a screw press separator for separating solid components from a pulp containing solid and liquid components. The screw press separator comprises a housing with an inlet chamber and a sieve chamber. The inlet chamber merges into the sieve chamber. Furthermore, an inlet for the pulp, an outlet for the solid constituents and an outlet for the liquid constituents are formed on the housing. A screen, in particular a cylindrical screen, is arranged in the screen chamber. A screw extends through the inlet chamber and into the screen. The screw can rotate about a longitudinal axis of the sieve. As the screw rotates, the pulp is pressed out along the sieve. The screw is preferably driven by a motor, the inlet chamber being located between the motor and the sieve chamber. According to the invention it is provided that a wear ring is arranged at the transition from the inlet chamber to the sieve chamber. The worm extends through this wear ring. The wear ring is attached to the housing and can be replaced. In particular, the wear ring can be attached to the inlet chamber. Several cutting edges are formed on the inner circumference of the wear ring. The very narrow gap between the outer edges of the screw threads and these cutting edges leads to a shear effect and thus to a breaking up of long-fiber solids in the pulp. This largely avoids clogging of the sieve. According to the invention, the wear ring is attached to the housing in an exchangeable manner and can easily be exchanged after corresponding wear.

Es ist vorgesehen, dass der Verschleißring als axialer Anschlag für das Sieb angeordnet ist. Hierzu ist insbesondere vorgesehen, dass ein größter Durchmesser des Verschleißrings größer ist als ein kleinster Durchmesser des Siebes. Eine Stirnseite des Siebes kann somit an dem Verschleißring anliegen. Der erfindungsgemäße Verschleißring dient mit seinen Schneidekanten also nicht nur zum Zerteilen langfaseriger Bestandteile der Trübe sondern dient gleichzeitig auch als axialer Anschlag für das Sieb. Auch solch ein axialer Anschlag für das Sieb unterliegt erhöhtem Verschleiß. Mit nur einem Bauteil, nämlich dem Verschleißring, werden also zwei verschleißbehaftete Anteile des Pressschneckenseparators, nämlich die Schneidekanten und der axiale Anschlag, gebildet.It is provided that the wear ring is arranged as an axial stop for the sieve. For this purpose, it is provided in particular that a largest diameter of the wear ring is greater than a smallest diameter of the sieve. One end face of the screen can thus rest against the wear ring. With its cutting edges, the wear ring according to the invention not only serves to break up long-fiber constituents of the pulp but also serves at the same time as an axial stop for the sieve. Such an axial stop for the sieve is also subject to increased wear. With only one component, namely the wear ring, two wear-prone parts of the press screw separator, namely the cutting edges and the axial stop, are formed.

Der Verschleißring weist eine erste Länge auf. Die gesamte Schnecke weist eine zweite Länge auf. Die beiden Längen werden dabei in Längsrichtung des Siebes gemessen. Bevorzugt ist vorgesehen, dass die erste Länge maximal 10 %, vorzugsweise maximal 5 %, der zweiten Länge beträgt. Dadurch ist sichergestellt, dass der erfindungsgemäße Verschleißring relativ kleinbauend ist und somit nur der dem Verschleiß unterliegende Bestandteil des Pressschneckenseparators ausgetauscht wird.The wear ring has a first length. The entire screw has a second length. The two lengths are measured in the longitudinal direction of the sieve. It is preferably provided that the first length is a maximum of 10%, preferably a maximum of 5%, of the second length. This ensures that the wear ring according to the invention has a relatively small structure and thus only the component of the press screw separator that is subject to wear is replaced.

Des Weiteren ist bevorzugt vorgesehen, dass der Verschleißring und die Schneidekanten vor dem Sieb angeordnet sind und sich nicht in das Sieb erstrecken. Der Verschleißring befindet sich also lediglich in dem Übergangsbereich von der Einlasskammer in die Siebkammer und erstreckt sich nicht bis in das Sieb hinein. Insbesondere in diesem Übergangsbereich sind die Schneidekanten von Nöten, da hier die langfaserigen Bestandteile vor dem Eintritt in das Sieb bearbeitet werden können.Furthermore, it is preferably provided that the wear ring and the cutting edges are arranged in front of the sieve and do not extend into the sieve. The wear ring is therefore only located in the transition area from the inlet chamber to the sieve chamber and does not extend into the sieve. In this transition area in particular, the cutting edges are necessary, since here the long-fiber components can be processed before they enter the sieve.

Der Verschleißring wird bevorzugt mit dem Gehäuse verschraubt. Hierzu sind insbesondere mehrere Verschraubungen vorgesehen, die sich parallel zur Längsachse des Siebes erstrecken. Die Verschraubung ermöglicht ein einfaches Auswechseln des Verschleißrings.The wear ring is preferably screwed to the housing. For this purpose, several screw connections are provided in particular, which extend parallel to the longitudinal axis of the sieve. The screw connection enables the wear ring to be exchanged easily.

Es ist erfindungsgemäß vorgesehen, dass der Verschleißring ein einstückig, geschlossener Ring ist. Die Schneidekanten sind dabei integraler Bestandteil des geschlossenen Rings.It is provided according to the invention that the wear ring is a one-piece, closed ring. The cutting edges are an integral part of the closed ring.

Insbesondere ist der gesamte Verschleißring ein Gussbauteil. Durch entsprechende spanende Bearbeitung wird dieses Gussbauteil in das Gehäuse eingepasst.In particular, the entire wear ring is a cast component. This cast component is fitted into the housing by appropriate machining.

Ferner offenbart ist ein Verschleißring für den Pressschneckenseparator. Dieser Verschleißring wird in einem Pressschneckenseparator, wie er oben beschrieben wurde, verwendet. Der Verschleißring, als eigenes, wirtschaftlich handelbares Bauteil ist dazu ausgebildet, am Übergangsbereich von der Einlasskammer in die Siebkammer angeordnet zu werden. Der Verschleißring wird dabei auswechselbar befestigt. Am Innenumfang des Verschleißrings sind mehrere Schneidekanten ausgebildet.A wear ring for the press screw separator is also disclosed. This wear ring is used in a press screw separator as described above. The wear ring, as a separate, economically tradable component, is designed to be arranged at the transition area from the inlet chamber to the sieve chamber. The wear ring is attached so that it can be replaced. Several cutting edges are formed on the inner circumference of the wear ring.

Die Erfindung wird nun anhand eines Ausführungsbeispiels unter Berücksichtigung der beigefügten Zeichnungen detailliert beschrieben. Dabei zeigen:

Fig. 1
einen teilweise aufgeschnittenen erfindungsgemäßen Pressschneckenseparator gemäß einem Ausführungsbeispiel,
Fig. 2
ein Detail zur Fig. 1, und
Fig. 3
den Schnitt A: A gemäß Fig. 2.
The invention will now be described in detail using an exemplary embodiment, taking into account the accompanying drawings. Show:
Fig. 1
a partially cut-open press screw separator according to the invention according to an embodiment,
Fig. 2
a detail on Fig. 1 , and
Fig. 3
the section A: A according to Fig. 2 .

Im Folgenden wird ein Pressschneckenseparator 1 anhand der Fig. 1 bis 3 gemäß dem Ausführungsbeispiel genauer erläutert.In the following, a screw press separator 1 is described with reference to FIG Figs. 1 to 3 explained in more detail according to the embodiment.

Der Pressschneckenseparator 1 umfasst ein Gehäuse 2. In dem Gehäuse 2 sind eine Einlasskammer 3 und eine Siebkammer 4 ausgebildet. Die Einlasskammer 3 geht in die Siebkammer 4 über.The press screw separator 1 comprises a housing 2. An inlet chamber 3 and a sieve chamber 4 are formed in the housing 2. The inlet chamber 3 merges into the sieve chamber 4.

Des Weiteren umfasst das Gehäuse 2 einen Einlass 5 an der Einlasskammer 3. Dieser Einlass 5 dient zum Einfüllen einer Trübe. An der Siebkammer 4 sind ein Auslass 6 und ein Ablauf 7 ausgebildet. Der Auslass 6 dient mit einer entsprechenden Mechanik zum stoßweisen Ausführen des abgetrennten Feststoffes. Über den Ablauf 7 fließt der von der Trübe abgetrennte flüssige Bestandteil aus dem Gehäuse 2 ab.Furthermore, the housing 2 comprises an inlet 5 on the inlet chamber 3. This inlet 5 is used to fill in a slurry. An outlet 6 and an outlet 7 are formed on the sieve chamber 4. The outlet 6 is used with a corresponding mechanism for discharging the separated solids in batches. The liquid component separated from the pulp flows out of the housing 2 via the outlet 7.

An das Gehäuse 2 ist ein Getriebe 11 angeflanscht. Das Getriebe 11 wiederum wird über einen Motor 12 angetrieben. Die Einlasskammer 3 befindet sich zwischen der Getriebe-Motor-Einheit und der Siebkammer 4.A gear 11 is flanged to the housing 2. The transmission 11 is in turn driven by a motor 12. The inlet chamber 3 is located between the gearbox-motor unit and the sieve chamber 4.

Vom Getriebe 11 durch die Einlasskammer 3 in die Siebkammer 4 erstreckt sich eine Schnecke 9. In der Siebkammer 4 ist ein hohlzylindrisches Sieb 8 angeordnet. Sowohl das Sieb 8 als auch die Schnecke 9 erstrecken sich entlang einer Längsachse 10.A screw 9 extends from the gear mechanism 11 through the inlet chamber 3 into the sieve chamber 4. A hollow cylindrical sieve 8 is arranged in the sieve chamber 4. Both the sieve 8 and the screw 9 extend along a longitudinal axis 10.

Im Betrieb des Pressschneckenseparators 1 wird über den Einlass 5 die zu trennende Trübe eingefüllt. Diese Trübe wird durch die drehende Schnecke 9 in Richtung des Auslasses 6 gefördert. Dabei bildet sich im Bereich des Auslasses 6 ein Feststoffpfropfen. Die entsprechenden flüssigen Bestandteile der Trübe treten durch das Sieb 8 radial nach außen und fließen über den Ablauf 7 ab.When the press screw separator 1 is in operation, the pulp to be separated is poured in via the inlet 5. This pulp is conveyed by the rotating screw 9 in the direction of the outlet 6. A solid plug forms in the area of the outlet 6. The corresponding liquid components of the pulp pass through the sieve 8 radially outwards and flow off via the outlet 7.

Am Übergang von der Einlasskammer 3 in die Siebkammer 4 befindet sich ein Verschleißring 13. Fig. 2 zeigt im Detail die Ausbildung und Anordnung dieses Verschleißrings 13. Der Verschleißring 13 ist ein einstückig gegossenes und spanend bearbeitetes Bauteil. Am Innenumfang des Verschleißrings 13 sind mehrere Rippen 14 ausgebildet. An seinem Außenumfang umfasst der Verschleißring 13 einen Winkelbereich 15. Über diesen Winkelbereich 15 ist der Verschleißring 13 im Gehäuse 2 befestigt. Die Befestigung erfolgt über Verschraubungen 16. Mittels dieser Verschraubungen 16 ist der Verschleißring 13 ohne Weiteres auswechselbar.A wear ring 13 is located at the transition from the inlet chamber 3 to the sieve chamber 4. Fig. 2 shows in detail the design and arrangement of this wear ring 13. The wear ring 13 is a one-piece cast and machined machined component. A plurality of ribs 14 are formed on the inner circumference of the wear ring 13. The wear ring 13 comprises an angular region 15 on its outer circumference. The wear ring 13 is fastened in the housing 2 via this angular region 15. It is fastened by means of screw connections 16. By means of these screw connections 16, the wear ring 13 can easily be exchanged.

Des Weiteren zeigt Fig. 2, dass der Durchmesser des Siebes 8 und der Durchmesser des Verschleißrings 13 so gewählt sind, dass das Sieb 8 in axialer Richtung am Verschleißring 13 anschlägt. Der Verschleißring 13 dient somit als axialer Anschlag des Siebes 8.Furthermore shows Fig. 2 that the diameter of the sieve 8 and the diameter of the wear ring 13 are selected so that the sieve 8 strikes the wear ring 13 in the axial direction. The wear ring 13 thus serves as an axial stop for the sieve 8.

Fig. 3 zeigt den in Fig. 2 gekennzeichneten Schnitt A:A. Wie anhand von Fig. 3 gut zu sehen ist bildet jede Rippe 14 jeweils zwei Schneidekanten 17. Die Schneidekanten 17 sind also durch die Rippen 14 gebildet. Die Schneidekanten 17 erstrecken sich parallel zur Längsachse 10. Die Außenkanten der Wendeln der Schnecke 9 bewegen sich mit nur einem sehr geringen Abstand über diese Schneidekanten 17 hinweg. Dadurch wirkt eine entsprechende Scherbelastung auf insbesondere langfaserige Anteile in der Trübe während des Übergangs von der Einlasskammer 3 in die Siebkammer 4. Fig. 3 shows the in Fig. 2 marked section A: A. As with Fig. 3 is clearly visible, each rib 14 forms two cutting edges 17. The cutting edges 17 are thus formed by the ribs 14. The cutting edges 17 extend parallel to the longitudinal axis 10. The outer edges of the spirals of the worm 9 move over these cutting edges 17 with only a very small distance. As a result, a corresponding shear load acts on, in particular, long-fiber components in the pulp during the transition from the inlet chamber 3 to the sieve chamber 4.

Insbesondere ist eine Vielzahl von Rippen 14, vorzugsweise mehr als 20, vorgesehen. der enge Spalt zwischen den Schneidekanten 17 und den äußeren Kanten der Wendeln der Schnecke 9 beträgt vorzugsweise 0,1 bis 0,5 mm.In particular, a multiplicity of ribs 14, preferably more than 20, is provided. the narrow gap between the cutting edges 17 and the outer edges of the spirals of the screw 9 is preferably 0.1 to 0.5 mm.

Fig. 2 zeigt in Richtung der Längsachse 10 gemessen eine erste Länge 18 des Verschleißrings 13. Fig. 1 zeigt ebenfalls in Richtung der Längsachse 10 gemessen eine zweite Länge 19 der gesamten Schnecke 9. Der Vergleich dieser beiden Längen 18, 19 zeigt, dass der Verschleißring 13 in Richtung der Längsachse 10 nur einen kleinen Bruchteil der zweiten Länge 19 der Schnecke 9 einnimmt. Insbesondere ist vorgesehen, dass die erste Länge 18 maximal 10 %, vorzugsweise maximal 5 %, der zweiten Länge 19 beträgt. Des Weiteren zeigt insbesondere Fig. 2, dass sich der Verschleißring 13 nicht in das Sieb 8 erstreckt. Vielmehr endet der Verschleißring 13 vor dem Sieb 18 und kann somit auch einen Anschlag für das Sieb 18 bilden. Fig. 2 shows a first length 18 of the wear ring 13 measured in the direction of the longitudinal axis 10. Fig. 1 shows a second length 19 of the entire screw 9, also measured in the direction of the longitudinal axis 10. The comparison of these two lengths 18, 19 shows that the wear ring 13 occupies only a small fraction of the second length 19 of the screw 9 in the direction of the longitudinal axis 10. In particular, it is provided that the first length 18 is a maximum of 10%, preferably a maximum of 5%, of the second length 19. Furthermore shows in particular Fig. 2 that the wear ring 13 does not extend into the sieve 8. Rather, the wear ring 13 ends in front of the sieve 18 and can thus also form a stop for the sieve 18.

BezugszeichenlisteList of reference symbols

11
PressscnheckenseparatorPress hatch separator
22
Gehäusecasing
33
EinlasskammerInlet chamber
44th
SiebSieve
55
Einlassinlet
66th
AuslassOutlet
77th
Ablaufprocedure
88th
SiebSieve
99
Schneckeslug
1010
LängsachseLongitudinal axis
1111
Getriebetransmission
1212th
Motorengine
1313th
VerschleißringWear ring
1414th
RippenRibs
1515th
WinkelbereichAngular range
1616
VerschraubungScrew connection
1717th
SchneidekantenCutting edges
1818th
erste Längefirst length
1919th
zweite Längesecond length

Claims (7)

  1. A pressing screw separator (1) for separating solid components from a slurry comprising solid and liquid components, comprising
    - a housing (2) with an inlet chamber (3) and a screen chamber (4), wherein the inlet chamber (3) merges into the screen chamber (4),
    - an inlet (5) at the inlet chamber (3) for the slurry,
    - an outlet (6) at the screen chamber (4) for the solid components,
    - an outlet (7) at the housing (2) for the liquid components,
    - a screen (8) arranged in the screen chamber (4),
    - a screw (9) extending through the inlet chamber (3) and into the screen (8), wherein the screw (9) is rotatably movable about a longitudinal axis (10) of the screen (8) for pressing out the slurry,
    characterized by
    - a wear ring (13) arranged at the transition from the inlet chamber (3) into the screen chamber (4),
    - wherein the wear ring (13) is replaceably fixed at the housing (2),
    - wherein a plurality of cutting edges (17) are formed at the inner circumference of the wear ring (13),
    - wherein the wear ring (13) is a one-piece, closed ring, wherein the cutting edges (17) are integral components of the closed ring, and
    - wherein the wear ring (13) is arranged as an axial stop for the screen (8).
  2. The pressing screw separator according to claim 1, characterized in that a largest diameter of the wear ring (13) is larger than a smallest diameter of the screen (8).
  3. The pressing screw separator according to any one of the preceding claims, characterized in that the wear ring (13) comprises a first length, the screw (9) comprises a second length (19), and the first length (18) is at most 10%, preferably at most 5%, of the second length (19).
  4. The pressing screw separator according to any one of the preceding claims, characterized in that the wear ring (13) and the cutting edges (17) are positioned in front of the screen (8) and do not extend into the screen (8).
  5. The pressing screw separator according to any one of the preceding claims, characterized in that the wear ring (13) is screwed to the housing (2).
  6. The pressing screw separator according to any one of the preceding claims, characterized in that the cutting edges (17) are formed by ribs (14) at the wear ring (13).
  7. The pressing screw separator according to any one of the preceding claims, characterized in that the wear ring (13) is a cast component.
EP15703610.4A 2014-02-13 2015-02-11 Screw press separator Active EP3105045B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15703610T PL3105045T3 (en) 2014-02-13 2015-02-11 Screw press separator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201420001409 DE202014001409U1 (en) 2014-02-13 2014-02-13 Press screw separator and wear ring
PCT/EP2015/052828 WO2015121280A1 (en) 2014-02-13 2015-02-11 Screw press separator and wear ring

Publications (2)

Publication Number Publication Date
EP3105045A1 EP3105045A1 (en) 2016-12-21
EP3105045B1 true EP3105045B1 (en) 2021-04-28

Family

ID=50276754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15703610.4A Active EP3105045B1 (en) 2014-02-13 2015-02-11 Screw press separator

Country Status (7)

Country Link
EP (1) EP3105045B1 (en)
DE (1) DE202014001409U1 (en)
DK (1) DK3105045T3 (en)
ES (1) ES2882120T3 (en)
HU (1) HUE055645T2 (en)
PL (1) PL3105045T3 (en)
WO (1) WO2015121280A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016204375A1 (en) * 2016-03-16 2017-09-21 Röhren- Und Pumpenwerk Bauer Ges.M.B.H. Arrangement for pasteurization and subsequent solids separation of a pulp

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571019A (en) * 1943-06-01 1945-08-02 Bibby & Sons Ltd J Improvements in or relating to machines for expressing liquids from solids
DE2351328A1 (en) * 1973-10-12 1975-04-24 Ver Foerderung Inst Kunststoff Thermoplastics waste processed without prior granulation - together with new material in single screw extruder in one operation
DE4011248A1 (en) * 1990-04-06 1991-10-10 Poettinger Alois Landmasch SCREW PRESS
DE10342684A1 (en) 2003-09-16 2005-04-28 Fan Separator Gmbh Helical press has cutting inlet slits to separate fibers from liquid discharged as industrial waste
DE102006002016A1 (en) * 2006-01-13 2007-07-19 Andreas Kufferath Gmbh & Co. Kg Screw shaft for suspension dewatering screw press, with wire basket enclosing screw spiral, includes peripheral surface irregularities on spiral to collect solid components tufts for cleaning basket surface
DE202010001765U1 (en) * 2010-02-02 2011-06-09 UTS Biogastechnik GmbH, 85399 screw press
DE202010001758U1 (en) * 2010-02-02 2011-06-09 UTS Biogastechnik GmbH, 85399 screw press
EP2561981A3 (en) * 2011-08-26 2013-12-25 Thöni Industriebetriebe GmbH Screw conveyor
DE102011086615A1 (en) * 2011-11-18 2013-05-23 Voith Patent Gmbh Screw extruder for separating liquids from suspension, particularly sludge- or fiber suspension, has casing having radially inner filter and radially outer supporting body, which is made of multiple axially spaced ring segments
DE202013003874U1 (en) * 2013-04-24 2013-05-15 Röhren- Und Pumpenwerk Bauer Ges.M.B.H. screw extractor

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
ES2882120T3 (en) 2021-12-01
HUE055645T2 (en) 2021-12-28
PL3105045T3 (en) 2021-11-22
DK3105045T3 (en) 2021-08-02
EP3105045A1 (en) 2016-12-21
DE202014001409U1 (en) 2014-02-25
WO2015121280A1 (en) 2015-08-20

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