EP2104766B1 - Sieve apparatus for a contaminated fibrous stock suspension, and its use - Google Patents

Sieve apparatus for a contaminated fibrous stock suspension, and its use Download PDF

Info

Publication number
EP2104766B1
EP2104766B1 EP07802291A EP07802291A EP2104766B1 EP 2104766 B1 EP2104766 B1 EP 2104766B1 EP 07802291 A EP07802291 A EP 07802291A EP 07802291 A EP07802291 A EP 07802291A EP 2104766 B1 EP2104766 B1 EP 2104766B1
Authority
EP
European Patent Office
Prior art keywords
screen
main part
rotor
housing
screen apparatus
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
EP07802291A
Other languages
German (de)
French (fr)
Other versions
EP2104766A1 (en
Inventor
Wolfgang Mueller
Andreas Steidele
Gert Gottschalk
Roland Reinhold
Wolfgang Mannes
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2104766A1 publication Critical patent/EP2104766A1/en
Application granted granted Critical
Publication of EP2104766B1 publication Critical patent/EP2104766B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/04—Flat screens

Definitions

  • the invention relates to a sieve apparatus for soiled pulp suspensions according to the preamble of claim 1.
  • a sifter The purpose of such a sifter is to remove from an aqueous pulp suspension, e.g. may be recovered from waste paper to get out unwanted contaminants.
  • the waste paper contains, in addition to the desired pulps, a more or less large amount of impurities which must not be allowed to get into the paper.
  • several separation processes are required to remove the various impurities in different stages of the treatment process.
  • the occurrence of blockages of the treatment system by contaminants to avoid only by the fact that rinsing cycles are established, which understandably can lead to burdens of the preparation operation, quantity surges and fiber losses.
  • the raw materials are mixed at the beginning of stock preparation in a pulper with water and so far crushed that they can be pumped as a suspension from the pulper. Even if in many cases a pre-cleaning already takes place in the pulper, a considerable amount of impurities remains in the pumped-off suspension and reaches the devices used for the treatment.
  • the sieve apparatus on which this invention is based can be used, for example, to process the soiled suspension coming from the pulper. In particular, it is also suitable for a pulp suspension derived from a pulper without having passed through a sieve.
  • the DE 198 25 669 A1 shows a sifting apparatus for dissolving and sorting waste paper, which also contains an overhead flat screen, which is kept free of a rotor.
  • the inlet is tangential in the housing. At the bottom there is an obliquely downward leading Störstoffauslauf with a lock.
  • the U.S. 5,407,538 shows a sieve with a gewarkelnelten body.
  • the aim is to be able to detect the largest possible spectrum of contaminants.
  • the sifter should be particularly suitable to further dissolve specks and pieces of paper.
  • a rotational flow is generated by the rotor movement, which has a concentric with the rotor axis of rotation.
  • This rotational flow is not concentric fitted in the housing in the subject invention, but with a skew angle. It is favorable if, in addition, an eccentric arrangement of rotor and housing is selected.
  • the sieve apparatus according to the invention is capable of retaining contaminants in the housing and of removing them from the pulp suspension with the aid of the sieve. Compared to the prior art, however, it also has the advantage of improving the resolution of specks and pieces of paper, and possibly also the detachment of coatings and printing inks. In addition, less wear is possible because there is hardly any danger exists that heavy parts stay in a circular orbit in the housing for a long time.
  • the Fig. 1 shows the Siebapparat in a typical standing position of use, but it could also be arranged horizontally. It contains a housing 1, which here consists of a main part 7, an overlying conical connecting part 8 and an underlying conical part 9.
  • the inner volume of the main part 7 here is significantly more than half of the total housing internal volume.
  • the main part 7 has a cylindrical shape with a center line 11, which is disposed opposite to the axis 12 of the rotor 4 at an oblique angle a, which can be selected between 1 ° and 60 °, where it is about 12 °.
  • the connecting part 8 consists of a concentric with the axis 12 downwardly flared truncated cone, which adjoins the top of the sieve 3 and below with a transition 14 to the main part 7.
  • the transition 14 extends at right angles to the center line 11 of the main part 7 and is thus cut off obliquely from the truncated cone. This results in an eccentricity between the main part 7 and the truncated cone.
  • the axis 12 relative to the vertical 13 at an angle ⁇ , which is between 0 ° and 30 °, here it is 15 °.
  • a rotor 4 is arranged, which can be set in rotation by an overlying only indicated drive set.
  • This rotor 4 serves both to generate a rotational flow as well as to keep a seated on the upper part of the housing 1 screen 3 of blockages, which is why it is moved close to the inlet side of the screen 3 along.
  • the sieve 3 divides the interior of the housing 1 from the overlying accept chamber 2, from which the substance accumulated therein can be discharged through the accepts outlet 5.
  • the sieve 3 is preferably a flat with sieve openings 17 provided disc, but may also have the shape of a flat truncated cone.
  • the housing 1 In the lower part of the housing 1 is an obliquely downward leading outlet opening 6 for the contaminants. It is advantageous to complete the housing 1 at the bottom to the outlet opening 6 so that any heavy parts that have arrived at the bottom can slip out of the conical part 9 into the outlet opening 6. In order to keep this range of deposits free, the addition of rinse water through a rinse water connection 27 may be advantageous.
  • the sifter will be operated with overpressure, so that the contaminants escape by themselves.
  • the overpressure can regulate the amount of contaminants removed.
  • Another possibility would be a metering device, which conveys a certain amount continuously out of the interior without blockage
  • the uses of the Siebapparates invention are based on a system example, as it is in Fig. 2 is illustrated. It is from a pulper 18 assumed in which the pulp, eg waste paper, mixed with water and transferred to a suspension.
  • the pulper 18 is equipped in its bottom portion with a sieve, not shown, pass through the part of the suspension in the annular space 21 and can be further processed as a pulp suspension 22.
  • the Fig. 2 also shows the discharge of a not through the sieve of the pulper 18 passed polluted fiber suspension through a settling tank 20 and then the forwarding of the thus freed from coarse heavy parts suspension 24 in a Siebapparat invention 19.
  • This Siebapparat 19 has here essentially the task of the substance further dissolve and separate a Störstoffstrom 25 so as to form a cleaned accepts suspension 26, which has passed through the sieve of the Siebapparates 19.
  • the Störstoffstrom 25 enters a Nachsortierapparat, eg a sorting drum 23, in which a separation between impurities 28 and pulp suspension 30 takes place, said pulp suspension 30 z. B. can be returned to the pulper 18.
  • FIG. 2 is merely an example of the meaningful use of the subject invention and should show the possibility of the new apparatus.
  • the diagram shows only the most important process steps, with the apparatuses used for this purpose only indicated and all conveyor and control devices are not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

The sieve apparatus according to the invention serves to treat a contaminated fibrous stock suspension, as is produced, for example, in the processing of waste paper. It has a housing (1) having a sieve (3) which separates an accepted stock chamber (2) from the housing (1). A rotor (4) can be moved closely along the sieve (3), as a result of which the latter is kept free and, moreover, a rotational flow is generated. The housing (1) has a main part (7) which is, in particular, cylindrical and the centre of which lies at an oblique angle (α) with respect to the axis (12) of the rotor (4) which lies between 1 and 60°, preferably between 5 und 25°. The typical use position of this apparatus is the standing arrangement.

Description

Die Erfindung betrifft einen Siebapparat für verschmutzte Faserstoffsuspensionen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a sieve apparatus for soiled pulp suspensions according to the preamble of claim 1.

Der Zweck eines derartigen Siebapparates besteht darin, aus einer wässrigen Faserstoffsuspension, die z.B. aus Altpapier gewonnen sein kann, unerwünschte Schmutzstoffe herauszuholen. Bekanntlich enthält das Altpapier neben den gewünschten Faserstoffen auch eine mehr oder weniger große Menge von Störstoffen, welche nicht in das Papier gelangen dürfen. In aller Regel sind mehrere Trennvorgänge erforderlich, um die verschiedenartigen Störstoffe in verschiedenen Abschnitten des Aufbereitungsprozesses zu entfernen. In vielen Fällen ist das Auftreten von Verstopfungen des Aufbereitungssystems durch Störstoffe nur dadurch zu vermeiden, dass Spültakte eingerichtet werden, was verständlicherweise zu Belastungen des Aufbereitungsbetriebes, zu Mengenstößen und zu Faserverlusten führen kann.The purpose of such a sifter is to remove from an aqueous pulp suspension, e.g. may be recovered from waste paper to get out unwanted contaminants. As is known, the waste paper contains, in addition to the desired pulps, a more or less large amount of impurities which must not be allowed to get into the paper. As a rule, several separation processes are required to remove the various impurities in different stages of the treatment process. In many cases, the occurrence of blockages of the treatment system by contaminants to avoid only by the fact that rinsing cycles are established, which understandably can lead to burdens of the preparation operation, quantity surges and fiber losses.

Üblicherweise werden die Rohstoffe zu Beginn der Stoffaufbereitung in einem Stofflöser mit Wasser vermischt und so weit zerkleinert, dass sie als Suspension aus dem Stofflöser abgepumpt werden können. Auch wenn in vielen Fällen bereits im Stofflöser eine Vorreinigung erfolgt, verbleibt noch eine beträchtliche Menge von Störstoffen in der abgepumpten Suspension und gelangt in die für die Aufbereitung verwendeten Vorrichtungen. Der dieser Erfindung zu Grunde liegende Siebapparat kann eingesetzt werden, um z.B. die vom Stofflöser kommende verschmutzte Suspension zu verarbeiten. Insbesondere ist er auch für eine Faserstoffsuspension geeignet, die aus einem Stofflöser stammt, ohne dass sie ein Sieb passiert hat.Usually, the raw materials are mixed at the beginning of stock preparation in a pulper with water and so far crushed that they can be pumped as a suspension from the pulper. Even if in many cases a pre-cleaning already takes place in the pulper, a considerable amount of impurities remains in the pumped-off suspension and reaches the devices used for the treatment. The sieve apparatus on which this invention is based can be used, for example, to process the soiled suspension coming from the pulper. In particular, it is also suitable for a pulp suspension derived from a pulper without having passed through a sieve.

In dem Fachaufsatz " Erfahrungen mit einem System zur Stofflöserentsorgung", Hans-Bernhard Winterstein, erschienen in DAS PAPIER, Heft 5, 1993, Seiten 236 bis 239 , wird eine Entsorgungsmaschine mit oben liegender Siebplatte beschrieben. Der Einlauf in diese Maschine ist nach unten gerichtet, und zwar direkt in Richtung zur Schwerteilschleuse hin. Leichtteile, insbesondere auch Kunststofffolien, sammeln sich im Gehäuse des Entsorgungsapparates an und werden taktweise ausgespült. Dazu wird der Inhalt mit Waschwasser verdünnt, bis angenähert die Waschwasserkonsistenz erreicht ist.In the technical paper " Experience with a system for pulp removal ", Hans-Bernhard Winterstein, published in THE PAPER, Issue 5, 1993, pages 236-239 , a disposal machine is described with top screen plate. The inlet to this machine is directed downwards, directly towards the heavy-duty sluice. Light parts, especially plastic films, accumulate in the housing of the disposal system and are rinsed out cyclically. For this purpose, the contents are diluted with washing water until the washing water consistency is approximately reached.

Die DE 198 25 669 A1 zeigt einen Siebapparat zum Auflösen und Sortieren von Altpapier, welcher ebenfalls ein oben liegendes ebenes Sieb enthält, das von einem Rotor freigehalten wird. Der Zulauf erfolgt tangential in das Gehäuse. Am Boden befindet sich ein schräg abwärts führender Störstoffauslauf mit einer Schleuse.The DE 198 25 669 A1 shows a sifting apparatus for dissolving and sorting waste paper, which also contains an overhead flat screen, which is kept free of a rotor. The inlet is tangential in the housing. At the bottom there is an obliquely downward leading Störstoffauslauf with a lock.

Die US- 5 407 538 zeigt einen siebapparat mit einem abgewinhelten Hauptteil.The U.S. 5,407,538 shows a sieve with a gewarkelnelten body.

Es ist Aufgabe der Erfindung, einen Siebapparat zu schaffen, mit welchem es gelingt, die Aussortierung von Störstoffen betriebssicher durchzuführen. Dabei soll ein möglichst großes Spektrum von Störstoffen erfasst werden können. Der Siebapparat soll insbesondere geeignet sein, Stippen und Papierstücke weiter aufzulösen.It is an object of the invention to provide a screening apparatus, with which it is possible to perform the sorting out of contaminants reliable. The aim is to be able to detect the largest possible spectrum of contaminants. The sifter should be particularly suitable to further dissolve specks and pieces of paper.

Diese Aufgabe wird durch die im Anspruch 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in claim 1.

Bei Vorrichtungen dieser Art wird durch die Rotorbewegung eine Rotationsströmung erzeugt, die eine mit der Rotorachse konzentrische Drehachse hat. Diese Rotationsströmung ist beim Erfindungsgegenstand nicht konzentrisch im Gehäuse eingepasst, sondern mit einem Schrägwinkel. Günstig ist, wenn außerdem eine exzentrische Anordnung von Rotor und Gehäuse gewählt wird.In devices of this type, a rotational flow is generated by the rotor movement, which has a concentric with the rotor axis of rotation. This rotational flow is not concentric fitted in the housing in the subject invention, but with a skew angle. It is favorable if, in addition, an eccentric arrangement of rotor and housing is selected.

Der erfindungsgemäße Siebapparat ist in der Lage, mit Hilfe des Siebes Störstoffe im Gehäuse zurückzuhalten und aus der Faserstoffsuspension zu entfernen. Gegenüber dem Stand der Technik weist er aber auch den Vorteil auf, die Auflösung von Stippen und Papierstücken, eventuell auch die Ablösung von Beschichtungen und Druckfarben zu verbessern. Außerdem ist ein geringerer Verschleiß möglich, da kaum noch die Gefahr besteht, dass sich Schwerteile lange in einer kreisähnlichen Umlaufbahn im Gehäuse aufhalten.The sieve apparatus according to the invention is capable of retaining contaminants in the housing and of removing them from the pulp suspension with the aid of the sieve. Compared to the prior art, however, it also has the advantage of improving the resolution of specks and pieces of paper, and possibly also the detachment of coatings and printing inks. In addition, less wear is possible because there is hardly any danger exists that heavy parts stay in a circular orbit in the housing for a long time.

Die Erfindung und ihre Vorteile werden erläutert an Hand von Zeichnungen. Dabei zeigen:

Fig. 1
einen erfindungsgemäßen Siebapparat, geschnitten in Seitenansicht;
Fig. 2
Schemata zur Verwendung des erfindungsgemäßen Siebapparates bei der Altpapieraufbereitung.
The invention and its advantages will be explained with reference to drawings. Showing:
Fig. 1
a Siebapparat invention, cut in side view;
Fig. 2
Schemes for using the Siebapparates invention in waste paper processing.

Die Fig. 1 zeigt den Siebapparat in einer typischen stehenden Gebrauchslage, er könnte aber auch liegend angeordnet sein. Er enthält ein Gehäuse 1, welches hier aus einem Hauptteil 7, einem darüber liegenden konischen Anschlussteil 8 und einem darunter liegenden konischen Teil 9 besteht. Das Innenvolumen des Hauptteils 7 beträgt hier deutlich mehr als die Hälfte des gesamten Gehäuse-Innenvolumens. Das Hauptteil 7 hat eine zylindrische Form mit einer Mittellinie 11, die gegenüber der Achse 12 des Rotors 4 in einem Schrägwinkel a angeordnet ist, der zwischen1° und 60° gewählt werden kann, wobei er hier ca. 12° beträgt. Das Anschlussteil 8 besteht aus einem mit der Achse 12 konzentrischen sich nach unten erweiternden Kegelstumpf, der sich oben an das Sieb 3 und unten mit einem Übergang 14 an das Hauptteil 7 anschließt. Der Übergang 14 verläuft rechtwinkelig zur Mittellinie 11 des Hauptteiles 7 und ist damit schräg vom Kegelstumpf abgeschnitten. Dadurch ergibt sich eine Exzentrizität zwischen dem Hauptteil 7 und dem Kegelstumpf. In Gebrauchslage des Apparates kann die Achse 12 gegenüber der Vertikalen 13 in einem Winkel β stehen, der zwischen 0° und 30° liegt, hier sind es 15°. Im Anschlussteil 8 des Gehäuses 1 und konzentrisch mit seiner Mittellinie ist ein Rotor 4 angeordnet, welcher durch einen darüber liegenden nur angedeuteten Antriebssatz in Rotation versetzt werden kann. Dieser Rotor 4 dient sowohl zur Erzeugung einer Rotationsströmung als auch dazu, ein am oberen Teil des Gehäuses 1 sitzendes Sieb 3 von Verstopfungen frei zu halten, weshalb er dicht an der Zulaufseite des Siebes 3 entlang bewegt wird. Das Sieb 3 teilt den Innenraum des Gehäuses 1 von der darüber liegenden Gutstoffkammer 2 ab, aus der der darin angesammelte Stoff durch den Gutstoffauslauf 5 ausgeleitet werden kann. Das Sieb 3 ist vorzugsweise eine ebene mit Sieböffnungen 17 versehene Scheibe, kann aber auch die Form eines flachen Kegelstumpfes haben. Im unteren Teil des Gehäuses 1 befindet sich eine schräg abwärts führende Austrittsöffnung 6 für die Störstoffe. Es ist günstig, das Gehäuse 1 unten zur Austrittsöffnung 6 so abzuschließen, dass eventuell unten angelangte Schwerteile aus dem konischen Teil 9 in die Austrittsöffnung 6 rutschen können. Um diesen Bereich von Ablagerungen frei zu halten, kann die Zugabe von Spülwasser durch einen Spülwasseranschluss 27 vorteilhaft sein.The Fig. 1 shows the Siebapparat in a typical standing position of use, but it could also be arranged horizontally. It contains a housing 1, which here consists of a main part 7, an overlying conical connecting part 8 and an underlying conical part 9. The inner volume of the main part 7 here is significantly more than half of the total housing internal volume. The main part 7 has a cylindrical shape with a center line 11, which is disposed opposite to the axis 12 of the rotor 4 at an oblique angle a, which can be selected between 1 ° and 60 °, where it is about 12 °. The connecting part 8 consists of a concentric with the axis 12 downwardly flared truncated cone, which adjoins the top of the sieve 3 and below with a transition 14 to the main part 7. The transition 14 extends at right angles to the center line 11 of the main part 7 and is thus cut off obliquely from the truncated cone. This results in an eccentricity between the main part 7 and the truncated cone. In the operating position of the apparatus, the axis 12 relative to the vertical 13 at an angle β, which is between 0 ° and 30 °, here it is 15 °. In the connecting part 8 of the housing 1 and concentric with its center line, a rotor 4 is arranged, which can be set in rotation by an overlying only indicated drive set. This rotor 4 serves both to generate a rotational flow as well as to keep a seated on the upper part of the housing 1 screen 3 of blockages, which is why it is moved close to the inlet side of the screen 3 along. The sieve 3 divides the interior of the housing 1 from the overlying accept chamber 2, from which the substance accumulated therein can be discharged through the accepts outlet 5. The sieve 3 is preferably a flat with sieve openings 17 provided disc, but may also have the shape of a flat truncated cone. In the lower part of the housing 1 is an obliquely downward leading outlet opening 6 for the contaminants. It is advantageous to complete the housing 1 at the bottom to the outlet opening 6 so that any heavy parts that have arrived at the bottom can slip out of the conical part 9 into the outlet opening 6. In order to keep this range of deposits free, the addition of rinse water through a rinse water connection 27 may be advantageous.

In der Regel wird man den Siebapparat mit Überdruck betreiben, so dass die Störstoffe von selbst austreten. Dabei kann der Überdruck die Menge der abgezogenen Störstoffe regeln. Es ist aber auch möglich, den Störstoffaustritt mit einem nicht angezeigten Absperrorgan zu versehen und z.B. taktweise zu öffnen und zu schließen. Eine weitere Möglichkeit wäre eine Dosiervorrichtung, welche verstopfungsfrei eine bestimmte Menge kontinuierlich aus dem Inneren herausfördertAs a rule, the sifter will be operated with overpressure, so that the contaminants escape by themselves. The overpressure can regulate the amount of contaminants removed. But it is also possible to provide the Störstoffaustritt with a non-displayed shut-off and, for. to open and close intermittently. Another possibility would be a metering device, which conveys a certain amount continuously out of the interior without blockage

Wie schon erwähnt, besteht die Möglichkeit, die über den Einlaufstutzen 10 zugeführte Faserstoffsuspension mit besonderen Vorteil in derselben Apparatur sowohl zu reinigen, als auch weiter aufzulösen. So ist es z.B. sinnvoll, bei einem Siebapparat der hier beschriebenen Art eine Weiterzerkleinerung des in der Suspension enthaltenen Feststoffes vorzunehmen, um z.B. die Sortierbarkeit des Stoffes zu verbessern. Dabei ist abzuwägen zwischen den Schäden, die durch Zerkleinerung der Störstoffe entstehen und dem Nutzen, der aus der höheren Vereinzelung von Störstoffen und Faserstoffbahnen erzielbar ist. In diese Überlegung ist auch einzubeziehen, wie groß die Sieböffnungen 17 in dem Sieb 3 gewählt sind. In den Fällen, in denen eine weitere Zerkleinerung oder Zerfaserung der sich in der Suspension befindenden Stoffe gewünscht wird, ergibt sich eine sehr einfache Möglichkeit, das zu realisieren. Es werden dann nämlich an der Peripherie eines mit Flügeln 15 versehenen Rotors 4 Prallstücke 16 angebracht, die im Zusammenwirken mit den Flügelspitzen eine schonende Zerkleinerung bewirken können.As already mentioned, it is possible to purify the pulp suspension supplied via the inlet connection 10 with particular advantage in the same apparatus as well as to further dissolve it. So it is e.g. it makes sense to carry out further comminution of the solid contained in the suspension in a sifter of the type described here, in order, for. to improve the sortability of the substance. It should be weighed between the damage caused by comminution of contaminants and the benefits that can be achieved from the higher separation of impurities and fibrous webs. In this consideration is also to include how large the screen openings 17 are selected in the screen 3. In cases where further comminution or defibration of the substances present in the suspension is desired, a very simple possibility arises for realizing this. It will then namely 4 baffles 16 attached to the periphery of a rotor provided with wings 15, which can cause a gentle crushing in cooperation with the wing tips.

Die Verwendungsmöglichkeiten des erfindungsgemäßen Siebapparates sollen an Hand eines Anlagenbeispieles, wie es in Fig. 2 dargestellt ist, erläutert werden. Dabei wird von einem Stofflöser 18 ausgegangen, in dem der Papierstoff, z.B. Altpapier, mit Wasser vermischt und in eine Suspension überführt wird. Der Stofflöser 18 ist in seinem Bodenbereich mit einem nicht gezeigten Sieb ausgestattet, durch das ein Teil der Suspension in den Ringraum 21 gelangen und als Faserstoffsuspension 22 weiterverarbeitet werden kann. Die Fig. 2 zeigt auch die Ausleitung einer nicht durch das Sieb des Stofflösers 18 hindurchgegangenen verschmutzten Fasersuspension durch einen Absetzbehälter 20 hindurch und dann die Weiterleitung der so von groben Schwerteilen 24 befreiten Suspension in einen erfindungsgemäßen Siebapparat 19. Dieser Siebapparat 19 hat hier im Wesentlichen die Aufgabe, den Stoff weiter aufzulösen sowie einen Störstoffstrom 25 abzutrennen, um so eine gereinigte Gutstoffsuspension 26 zu bilden, welche das Sieb des Siebapparates 19 passiert hat. Der Störstoffstrom 25 gelangt in einen Nachsortierapparat, z.B. eine Sortiertrommel 23, in der eine Trennung zwischen Störstoffen 28 und Faserstoffsuspension 30 erfolgt, wobei diese Faserstoffsuspension 30 z. B. in den Stofflöser 18 zurückgeleitet werden kann.The uses of the Siebapparates invention are based on a system example, as it is in Fig. 2 is illustrated. It is from a pulper 18 assumed in which the pulp, eg waste paper, mixed with water and transferred to a suspension. The pulper 18 is equipped in its bottom portion with a sieve, not shown, pass through the part of the suspension in the annular space 21 and can be further processed as a pulp suspension 22. The Fig. 2 also shows the discharge of a not through the sieve of the pulper 18 passed polluted fiber suspension through a settling tank 20 and then the forwarding of the thus freed from coarse heavy parts suspension 24 in a Siebapparat invention 19. This Siebapparat 19 has here essentially the task of the substance further dissolve and separate a Störstoffstrom 25 so as to form a cleaned accepts suspension 26, which has passed through the sieve of the Siebapparates 19. The Störstoffstrom 25 enters a Nachsortierapparat, eg a sorting drum 23, in which a separation between impurities 28 and pulp suspension 30 takes place, said pulp suspension 30 z. B. can be returned to the pulper 18.

Anzumerken ist, dass die Fig. 2 lediglich ein Beispiel zur sinnvollen Verwendung des Erfindungsgegenstandes ist und die Möglichkeit des neuen Apparates aufzeigen soll. Das Schema zeigt nur die wichtigsten Verfahrensschritte, wobei die dazu verwendeten Apparate nur angedeutet und alle Förder- und Regeleinrichtungen nicht dargestellt sind.It should be noted that the Fig. 2 is merely an example of the meaningful use of the subject invention and should show the possibility of the new apparatus. The diagram shows only the most important process steps, with the apparatuses used for this purpose only indicated and all conveyor and control devices are not shown.

Claims (13)

  1. Screen apparatus for a contaminated fibrous stock suspension, having a closed housing (1) with predominantly circular cross sections, an inlet nozzle (10), which leads laterally into this housing (1), a screen (3), a rotor (4) that can be driven and can be moved relative to the screen (3), close to the latter, in order to keep it free of blockages, an accepted material chamber (2), which is divided off from the housing (1) by the screen (3) and which is provided with an accepted material outlet (5), and also an outlet line (6) connected to the housing (1) for the impurities present in the suspension,
    characterized in that
    the housing (1) has a rotationally symmetrical main part (7) comprising at least 30%, preferably at least 50%, of its internal volume, the centre line (11) of which main part is at an oblique angle (α) between 1° and 60°, preferably between 5° and 25°, with respect to the axis (12) of the rotor (4), the housing (1) having, between the main part (7) and the screen (3), a connecting part (8) which widens conically with respect to the main part (7) and which, at the transition (14) to the main part (7), is cut off at right angles to the centre line (11) of the main part (7).
  2. Screen apparatus according to Claim 1,
    characterized in that
    it has fixing devices which lead to a position of use in which the axis (12) of the rotor (4) is arranged with respect to the vertical (13) at an angle (β) between 0° and 30°, preferably 10° to 20°, and in that the screen (3) is arranged above the main part (7).
  3. Screen apparatus according to Claim 1 or 2,
    characterized in that
    the housing (1) has, between the main part (7) and the screen (3), a connecting part (8) that is concentric with the rotor (4).
  4. Screen apparatus according to one of the preceding claims,
    characterized in that
    the inlet nozzle (10) opens into the lower region of the main part (7).
  5. Screen apparatus according to one of the preceding claims,
    characterized in that
    the main part (7) is adjoined by a narrowing conical part (9).
  6. Screen apparatus according to Claim 5,
    characterized in that
    the outlet line (6) for the impurities adjoins the lower end of the conical part (9).
  7. Screen apparatus according to one of the preceding claims,
    characterized in that
    at one end the main part (7) has a minimum spacing from the rotor (4) which corresponds to a maximum of 50% of the rotor diameter.
  8. Screen apparatus according to one of the preceding claims,
    characterized in that
    the rotor (4) is provided with blades (15).
  9. Screen apparatus according to Claim 8,
    characterized in that
    on the periphery of the blades (15) there are located impact pieces (16) fixed radially on the outside, which are arranged in such a way that, in interaction with the blades, they are able to lead to comminution of the pieces of paper web that have not yet been disintegrated.
  10. Screen apparatus according to one of the preceding claims,
    characterized in that
    the screen openings (17) are round with a minimum diameter between 10 - 20 mm.
  11. Screen apparatus according to Claim 10,
    characterized in that
    the screen openings (17) are round with a minimum diameter between 2 and 5 mm.
  12. Use of the screen apparatus according to one of the preceding claims for processing a waste paper suspension containing impurities,
    by which means the waste paper suspension containing impurities is both cleaned and disintegrated further.
  13. Use of the screen apparatus according to Claim 12,
    characterized in that
    the axis (12) of the rotor (4) is inclined with respect to the vertical (13) at an angle (β) between 0° and 30°.
EP07802291A 2006-11-23 2007-09-13 Sieve apparatus for a contaminated fibrous stock suspension, and its use Active EP2104766B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055316A DE102006055316B3 (en) 2006-11-23 2006-11-23 Sieve for the recovery of fibers from recycled paper has main cylinder section inclined at an angle to that of the rotor
PCT/EP2007/007964 WO2008061582A1 (en) 2006-11-23 2007-09-13 Sieve apparatus for a contaminated fibrous stock suspension, and its use

Publications (2)

Publication Number Publication Date
EP2104766A1 EP2104766A1 (en) 2009-09-30
EP2104766B1 true EP2104766B1 (en) 2012-08-15

Family

ID=38581913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802291A Active EP2104766B1 (en) 2006-11-23 2007-09-13 Sieve apparatus for a contaminated fibrous stock suspension, and its use

Country Status (6)

Country Link
US (1) US20090223873A1 (en)
EP (1) EP2104766B1 (en)
JP (1) JP2010510401A (en)
CN (1) CN101542040B (en)
DE (1) DE102006055316B3 (en)
WO (1) WO2008061582A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009019664A1 (en) 2009-04-30 2010-11-04 Voith Patent Gmbh Process for treating a pulp suspension and screening device for its implementation
WO2018125555A1 (en) 2016-12-29 2018-07-05 3D Systems, Inc. Three dimensional printing system with efficient powder handling system
DE102022126745A1 (en) 2022-10-13 2024-04-18 Voith Patent Gmbh Method for operating a pulper for producing a suspension, in particular a fiber suspension

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31775E (en) * 1975-08-27 1984-12-25 Scan-Web I/S Method and an apparatus for distributing a disintegrated material onto a layer forming surface
FR2663966A1 (en) * 1990-07-02 1992-01-03 Lamort Em SORTING DEVICE FOR A MIXTURE OF PAPER PULP AND CONTAMINANTS.
FI88414C (en) * 1991-01-30 1993-05-10 Ahlstroem Oy Device for treating fiber suspension
US5385240A (en) * 1993-04-30 1995-01-31 The Black Clawson Company Screening apparatus with adjustable hydrofoil portion
US6083350A (en) * 1996-03-01 2000-07-04 Voith Sulzer Stoffaufbereitung Gmbh System for treatment of waste paper having a pulping drum and a perforated sorting area
CN2269416Y (en) * 1996-08-30 1997-12-03 杨盛杰 Diversion self suction type sand removing defibering fiberizer
DE19736143C2 (en) * 1997-08-20 2003-02-27 Voith Paper Fiber Systems Gmbh Method and device for dissolving fibrous material
DE19825669B4 (en) * 1998-06-09 2005-09-08 Voith Paper Patent Gmbh Screening device for a soiled pulp suspension
CN2355810Y (en) * 1998-11-29 1999-12-29 李风宁 Adjustable high efficiency slag remover
US6585116B1 (en) * 2000-02-22 2003-07-01 Voith Sulzer Paper Technology North America, Inc. Screening apparatus for fiber suspension
DE10060822B4 (en) * 2000-12-07 2006-04-27 Voith Paper Patent Gmbh Pressure sorter for removing contaminants from a paper pulp suspension containing contaminants
DE10115298A1 (en) * 2001-03-28 2002-10-17 Voith Paper Patent Gmbh Pressure sorter for removing contaminants from a paper fiber suspension containing contaminants
DE10156201C1 (en) * 2001-11-15 2002-10-17 Voith Paper Patent Gmbh To process high consistency paper fiber materials, an initial high consistency volume is held in a stack for a dwell time, to be taken off at the bottom by a circulation flow for dilution and delivery as a suspension
DE102004051327B4 (en) * 2004-10-21 2007-09-27 Voith Patent Gmbh Method for degassing and feeding a pulp suspension to a headbox and degassing
FI117867B (en) * 2004-12-10 2007-03-30 Metso Paper Inc Sorter and method for sorting the pulp
DE202006003421U1 (en) * 2006-03-04 2006-05-04 Voith Paper Patent Gmbh Device for discharging heavy parts from an apparatus for treating a pulp suspension, in particular from a hydrocyclone operable to clean a pulp suspension

Also Published As

Publication number Publication date
CN101542040B (en) 2012-07-25
US20090223873A1 (en) 2009-09-10
DE102006055316B3 (en) 2008-01-31
JP2010510401A (en) 2010-04-02
EP2104766A1 (en) 2009-09-30
WO2008061582A1 (en) 2008-05-29
CN101542040A (en) 2009-09-23

Similar Documents

Publication Publication Date Title
DE19736143C2 (en) Method and device for dissolving fibrous material
EP1084290B1 (en) Pulper
DE2518112C2 (en) Device for treating paper fibers
DE2440393C2 (en) Method and apparatus for recovering paper fibers from waste paper containing foreign matter
EP2825697B1 (en) Pulper with screening means and method of screening a fiber mass
EP1598477B1 (en) Pressure screen for screening a fibrous suspension
EP2104766B1 (en) Sieve apparatus for a contaminated fibrous stock suspension, and its use
DE102009019664A1 (en) Process for treating a pulp suspension and screening device for its implementation
EP1170417A1 (en) Method for pulping and cleaning of waste paper containing impurities
EP1710347A1 (en) Process for pulping and cleaning of papermaking raw materials containing impurities
DE4406315C2 (en) Device for crushing and suspending waste, in particular organic household waste
DE60105359T2 (en) Sorting apparatus for a fiber suspension
CH664403A5 (en) METHOD FOR PROCESSING WASTE PAPER.
EP1215334B1 (en) Process for pulping and cleaning of fibrous material containing impurities in particular waste paper
EP1749923B1 (en) Apparatus for treating a fibrous suspension
EP2657397B1 (en) Method for dissolving fibrous materials
EP1860231A2 (en) Method and device for cleaning paper raw materials containing impurities
EP1876289B1 (en) Method for separating impurities from a fibrous suspension
DE19825669B4 (en) Screening device for a soiled pulp suspension
EP1130156B1 (en) Device for separating impurities from fibrous material
DE29810276U1 (en) Screening device for a dirty fiber suspension
EP0887458A1 (en) Process to suspend and clean a paper stock containing contaminants
DE102004015011A1 (en) Method of suspending and purifying contaminated raw materials for papermaking, initiates contaminant drainage by introduction of pressurized water flow into sieve apparatus
DE20304303U1 (en) Pressurised paper fibre suspension sorting assembly has rotating cylinder with a series of free standing surface-mounted blades set at different angles of attack
DE202004010009U1 (en) Secondary pulp solver for pulp processing

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

17P Request for examination filed

Effective date: 20090623

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GOTTSCHALK, GERT

Inventor name: MANNES, WOLFGANG

Inventor name: STEIDELE, ANDREAS

Inventor name: MUELLER, WOLFGANG

Inventor name: REINHOLD, ROLAND

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20101005

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

Ref country code: AT

Ref legal event code: REF

Ref document number: 570928

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120815

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: DE

Ref legal event code: R096

Ref document number: 502007010395

Country of ref document: DE

Effective date: 20121011

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120815

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

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: 20121215

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: 20120815

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

Ref country code: GR

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: 20121116

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: 20120815

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: 20120815

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: 20120815

Ref country code: PT

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: 20121217

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

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: 20120815

BERE Be: lapsed

Owner name: VOITH PATENT G.M.B.H.

Effective date: 20120930

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

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: 20120815

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: 20120815

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: 20120815

Ref country code: MC

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

Effective date: 20120930

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: 20120815

Ref country code: ES

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: 20121126

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20120815

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: 20120815

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

26N No opposition filed

Effective date: 20130516

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

Effective date: 20121115

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

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: 20121115

Ref country code: LI

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

Effective date: 20120930

Ref country code: BE

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

Effective date: 20120930

Ref country code: IE

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

Effective date: 20120913

Ref country code: CH

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

Effective date: 20120930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007010395

Country of ref document: DE

Effective date: 20130516

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

Ref country code: GB

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

Effective date: 20121115

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: 20120815

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: 20120815

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

Ref country code: LU

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

Effective date: 20120913

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

Effective date: 20070913

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

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

Effective date: 20230613

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

Ref country code: FI

Payment date: 20230920

Year of fee payment: 17

Ref country code: AT

Payment date: 20230921

Year of fee payment: 17

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

Ref country code: SE

Payment date: 20230920

Year of fee payment: 17

Ref country code: FR

Payment date: 20230928

Year of fee payment: 17

Ref country code: DE

Payment date: 20230920

Year of fee payment: 17

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

Ref country code: IT

Payment date: 20230927

Year of fee payment: 17