EP2104766B1 - Appareil de tamisage pour suspension encrassée de fibres et utilisation de cet appareil - Google Patents

Appareil de tamisage pour suspension encrassée de fibres et utilisation de cet appareil Download PDF

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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
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EP
European Patent Office
Prior art keywords
screen
main part
rotor
housing
screen apparatus
Prior art date
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Active
Application number
EP07802291A
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German (de)
English (en)
Other versions
EP2104766A1 (fr
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
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Voith Patent GmbH
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Publication of EP2104766A1 publication Critical patent/EP2104766A1/fr
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    • 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

L'appareil de tamisage selon l'invention sert à traiter une suspension encrassée de fibres, par exemple formées pendant le traitement de vieux papiers. L'appareil présente un boîtier (1) doté d'un tamis (3) qui sépare une chambre (2) de matière traitée du boîtier (1). Un rotor (4) peut être déplacé étroitement contre le tamis (3), ce qui libère ce dernier et forme en outre un écoulement rotatif. Le boîtier (1) présente une partie principale (7), en particulier cylindrique, dont le centre forme par rapport à l'axe (12) du rotor (4) un angle oblique (α) compris entre 1 et 60° et de préférence entre 5 et 25°. La position typique d'utilisation de cet appareil est un agencement debout.

Claims (13)

  1. Appareil de tamisage pour une suspension fibreuse encrassée comprenant un boîtier (1) présentant des sections transversales fermées, essentiellement circulaires, une tubulure d'entrée (10) qui conduit latéralement dans ce boîtier (1), un tamis (3), un rotor (4) pouvant être entraîné, qui peut être déplacé à proximité du tamis (3) par rapport à celui-ci, afin de le maintenir exempt d'obstructions, une chambre de matière première (2), qui est séparée du boîtier (1) par le tamis (3) et qui est pourvue d'une sortie de matière première (5), ainsi qu'une conduite de sortie (6) raccordée au boîtier (1) pour des impuretés présentes dans la suspension, caractérisé en ce que le boîtier (1) présente une partie principale (7) à symétrie de révolution constituant au moins 30 %, de préférence au moins 50 % de son volume interne, dont l'axe médian (11) est orienté par rapport à l'axe (12) du rotor (4) suivant un angle oblique (α) compris entre 1° et 60°, de préférence entre 5° et 25°, le boîtier (1) présentant entre la partie principale (7) et le tamis (3) une partie de raccordement (8) s'élargissant sous forme conique par rapport à la partie principale (7), laquelle partie de raccordement (8) est sectionnée au niveau de la transition (14) à la partie principale (7) à angle droit par rapport à l'axe médian (11) de la partie principale (7).
  2. Appareil de tamisage selon la revendication 1,
    caractérisé en ce
    qu'il présente des dispositifs de fixation qui conduisent à une position d'utilisation dans laquelle l'axe (12) du rotor (4) est orienté par rapport à la verticale (13) suivant un angle (β) compris entre 0° et 30°, de préférence entre 10° et 20°, et en ce que le tamis (3) est disposé au-dessus de la partie principale (7).
  3. Appareil de tamisage selon la revendication 1 ou 2,
    caractérisé en ce que
    le boîtier (1) présente, entre la partie principale (7) et le tamis (3), une partie de raccordement (8) concentrique au rotor (4).
  4. Appareil de tamisage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la tubulure d'entrée (10) débouche dans la région inférieure de la partie principale (7).
  5. Appareil de tamisage selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    qu'une partie conique (9) se rétrécissant se raccorde à la partie principale (7).
  6. Appareil de tamisage selon la revendication 5,
    caractérisé en ce que
    la conduite de sortie (6) pour les impuretés se raccorde à l'extrémité inférieure de la partie conique (9).
  7. Appareil de tamisage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la partie principale (7) présente à une extrémité une distance minimale au rotor (4), qui correspond au maximum à 50 % du diamètre du rotor.
  8. Appareil de tamisage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le rotor (4) est pourvu de pales (15).
  9. Appareil de tamisage selon la revendication 8,
    caractérisé en ce que
    des éléments d'impact (16) fixes radialement à l'extérieur se situent à la périphérie des pales (15), et sont disposés de telle sorte qu'ils puissent servir, lors de la coopération avec les pales, à fragmenter les éléments de la bande de papier pas encore dissous.
  10. Appareil de tamisage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les ouvertures du tamis (17) sont rondes et ont un diamètre minimal compris entre 10 et 20 mm.
  11. Appareil de tamisage selon la revendication 10,
    caractérisé en ce que
    les ouvertures du tamis (17) sont rondes et ont un diamètre minimal compris entre 2 et 5 mm.
  12. Utilisation de l'appareil de tamisage selon l'une quelconque des revendications précédentes, pour le traitement d'une suspension de vieux papier contenant des impuretés,
    de sorte que la suspension de vieux papier contenant des impuretés soit à la fois nettoyée et davantage dissoute.
  13. Utilisation de l'appareil de tamisage selon la revendication 12,
    caractérisée en ce que
    l'axe (12) du rotor (4) est orienté par rapport à la verticale (13) suivant un angle (β) compris entre 0° et 30°.
EP07802291A 2006-11-23 2007-09-13 Appareil de tamisage pour suspension encrassée de fibres et utilisation de cet appareil Active EP2104766B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055316A DE102006055316B3 (de) 2006-11-23 2006-11-23 Siebapparat für eine verschmutzte Faserstoffsuspension und seine Verwendung
PCT/EP2007/007964 WO2008061582A1 (fr) 2006-11-23 2007-09-13 Appareil de tamisage pour suspension encrassée de fibres et utilisation de cet appareil

Publications (2)

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

Family

ID=38581913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802291A Active EP2104766B1 (fr) 2006-11-23 2007-09-13 Appareil de tamisage pour suspension encrassée de fibres et utilisation de cet appareil

Country Status (6)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009019664A1 (de) * 2009-04-30 2010-11-04 Voith Patent Gmbh Verfahren zur Behandlung einer Faserstoffsuspension sowie Siebvorrichtung zu seiner Durchführung
WO2018125555A1 (fr) 2016-12-29 2018-07-05 3D Systems, Inc. Système d'impression en trois dimensions doté d'un système de manipulation de poudre efficace
DE102022126745A1 (de) 2022-10-13 2024-04-18 Voith Patent Gmbh Verfahren zum Betrieb eines Pulpers zur Erzeugung einer Suspension, insbesondere einer Fasersuspension

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 (fr) * 1990-07-02 1992-01-03 Lamort Em Dispositif de triage d'un melange de pate a papier et de contaminants.
FI88414C (fi) * 1991-01-30 1993-05-10 Ahlstroem Oy Anordning foer behandling av fibersuspension
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 (zh) * 1996-08-30 1997-12-03 杨盛杰 一种导流自吸式除砂疏解磨浆机
DE19736143C2 (de) * 1997-08-20 2003-02-27 Voith Paper Fiber Systems Gmbh Verfahren und Vorrichtung zum Auflösen von Faserstoff
DE19825669B4 (de) * 1998-06-09 2005-09-08 Voith Paper Patent Gmbh Siebapparat für eine verschmutzte Faserstoffsuspension
CN2355810Y (zh) * 1998-11-29 1999-12-29 李风宁 可调式高效除渣器
US6585116B1 (en) * 2000-02-22 2003-07-01 Voith Sulzer Paper Technology North America, Inc. Screening apparatus for fiber suspension
DE10060822B4 (de) * 2000-12-07 2006-04-27 Voith Paper Patent Gmbh Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension
DE10115298A1 (de) * 2001-03-28 2002-10-17 Voith Paper Patent Gmbh Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension
DE10156201C1 (de) * 2001-11-15 2002-10-17 Voith Paper Patent Gmbh Verfahren und Behälter zum Stapeln von hochkonsistentem Papierfaserstoff
DE102004051327B4 (de) * 2004-10-21 2007-09-27 Voith Patent Gmbh Verfahren zur Entgasung und Zuführung einer Faserstoffsuspension zu einem Stoffauflauf sowie Entgasungsvorrichtung
FI117867B (fi) * 2004-12-10 2007-03-30 Metso Paper Inc Lajitin ja menetelmä kuitumassan lajittelemiseksi
DE202006003421U1 (de) * 2006-03-04 2006-05-04 Voith Paper Patent Gmbh Vorrichtung zum Austragen von Schwerteilen aus einem Apparat zur Behandlung einer Faserstoffsuspension, insbesondere aus einem zum Reinigen einer Faserstoffsuspension betreibbaren Hydrozyklon

Also Published As

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

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