EP1693505B1 - Pulpeur pour la disintégration et pour mettre en suspension de matière première de papier et son rotor - Google Patents

Pulpeur pour la disintégration et pour mettre en suspension de matière première de papier et son rotor Download PDF

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Publication number
EP1693505B1
EP1693505B1 EP06000661A EP06000661A EP1693505B1 EP 1693505 B1 EP1693505 B1 EP 1693505B1 EP 06000661 A EP06000661 A EP 06000661A EP 06000661 A EP06000661 A EP 06000661A EP 1693505 B1 EP1693505 B1 EP 1693505B1
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EP
European Patent Office
Prior art keywords
rotor
pulper
blades
pulper according
screen
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
EP06000661A
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German (de)
English (en)
Other versions
EP1693505A1 (fr
Inventor
Gerhard Gaus
Axel Gommel
Tillman Katzenmeier
Wolfgang Müller
Andreas Steidele
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 date
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Publication of EP1693505A1 publication Critical patent/EP1693505A1/fr
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Publication of EP1693505B1 publication Critical patent/EP1693505B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers

Definitions

  • the invention relates to a pulper for comminution and suspension of pulp and rotor for such a pulper.
  • Pulpers of this type are mainly used to suspend dried pulp or waste paper. They consist essentially of a container for the suspension and at least one rotor. The registered material is intensively mixed in large pieces, webs or pressed bales with water, whereby a hydraulic material drive is generated by the rotor. Understandably, such devices are optimized, aiming essentially for a fast and efficient dissolution. In many cases, the rotor is placed in close proximity to a flat screen that keeps it free of blockages. Through the openings of the screen, the dissolved substance is withdrawn as a suspension.
  • the standard type for a pulper is a vertical cylindrical container with a rotor in the bottom area.
  • water and the substance to be dissolved is added from above and with the help of the rotor creates a Trombenströmung in the suspension, ie in the inner region of the fabric is pulled down from the rotor and pressed radially outwards in the bottom region, resulting in a Umtriebsströmung results.
  • the circumferential flow braked is also known to control this Umtriebsströmung.
  • Another typical design is the open top pulper with laterally inserted rotor.
  • the invention is based on the object to improve pulpers for crushing and suspending paper stock so that the dissolution process can be carried out more economically and gently.
  • an improved deflaking effect can be achieved.
  • the working strips at the top of the wings are suitable for intensifying the dissolving effect.
  • This feature may also be combined with the known dissolution ledges or protrusions attached to the sieve facing side of the rotor can be located. In this area, ie in the space between the rotor and sieve, there is also an intensive processing of the pulp by shear forces, provided that it is fine enough to get there. Further advantages are possible in that the blades of the rotor are strongly curved and form a relatively acute angle with the peripheral circle at its outer radius. In particular, if a flat dissolving container is used with laterally attached rotor, it can be generated with this measure a low-spin flow.
  • the wear protection can be improved by providing the front sides of the wings or the working strips with replaceable wear-resistant plates or strips. It is also conceivable to design the working strips in total as replaceable wear parts.
  • FIG. 1 shows the top view of a rotor for a pulper according to the invention. Even if such a rotor in the pulper is not always horizontal, that is operated with a vertical axis, it is assumed here of this special installation situation and accordingly spoken of "top” and "bottom".
  • the rotor 2 is provided with a total of five curved wings 3 and is driven in rotation in the direction of rotation 6 during operation of the pulper. One of the wings is shown below the task bar 7 cut.
  • the rotor acts with a sieve 10 together, of which only a small part is drawn here. This sieve 10 is mounted at a distance A to the bottom of the rotor (see Fig. 2 ).
  • the smallest distance A is as small as possible, so that a good resolution is achieved and thus the rotor or its wings 3 can serve to keep the screen openings 11 free. It lies with advantage with few millimeters. If the sieve is provided with strips on the side facing the rotor, which advantageously enhances the dissolving effect, the distance A is to be measured from the upper side of the strip.
  • working strips 7 are mounted, which project in the direction of rotation 6 and e.g. can have a rectangular cross-section.
  • their upper side 16 and / or lower side 15, at least predominantly aligned perpendicular to the rotor axis.
  • Its axial extent B is advantageously relatively small compared to the axial extent of the wings 3, e.g. between 5 and 20%.
  • Thre working edges can be smooth or with a serrated profile.
  • the blades 3 of the rotor have on its front side, ie the side which drives the suspension during rotation, below the working strips 7, a front surface 4 whose projection on the wire 11 the circumferential circle 5 intersects at an angle ⁇ of at most 20 °.
  • this angle ⁇ is relatively acute and has a special hydraulic effect when driving the suspension in the pulper because of the pronounced radial conveying action.
  • Fig. 1 is entered the line II, along which a cut is laid and in Fig. 2 is shown.
  • This section through the wing 3, the hub body 9 of the rotor and the screen 10 shows in particular the distance A between the underside of the rotor and the top of the screen 10.
  • a rounding 13 between working strips 7 and leading edges of the wings 3 in the radially outer region of the rotor visible (here as exhibit. It can also be seen that in the example shown here, the hub body 9 of the rotor is fastened releasably on a shaft flange 12 by means of screws 14.
  • Fig. 3 is a section according to the line III ( Fig. 1 ) visible, noticeable. Also at this point, a part of the task bar 7 can be seen, which, however, followed by only a small rounding on the front surface 4 of the wing 3.
  • the surface 4 is parallel to a plane perpendicular to the wire, that is not inclined relative to the axial direction of the rotor 2 or inclined at an inclination angle y, wherein this inclination angle ⁇ is advantageously between 15 and 30 °. Since this inclination is directed so that the parts of the surface 4 further away from the screen project in the direction of rotation, a flow component is produced in the direction of the screen, which in many cases improves the resolving action of the rotor.
  • a pulper to which the invention can be applied is the standing cylindrical open top pulper according to FIG Fig. 4 in which sieve 10 and rotor 2 are located in the bottom area.
  • the rotor 2 has an axial extent E which is between 10% and 20% of the diameter of the circumferential circle 5.
  • the pulper is then particularly suitable for consistencies between 2 and 6%.
  • pulp S and water W are introduced into the container 1 of the pulper.
  • the finished pumpable suspension is withdrawn through the screen openings of the screen 10 as accept G.
  • Another likewise advantageous embodiment of the invention is a pulper with at least one laterally mounted rotor according to Fig. 5 with a horizontal container 1 '.
  • a lying container can be used, for example, under a paper machine for the dissolution of production scrap. Due to the hydraulically less favorable shape of a horizontal container 1 ', however, the requirements for the rotor are particularly high. As a further application is also a Sekundärstofflöser eg according to DE-A-2345735 conceivable, which is provided with a rotor described in the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (19)

  1. Pulpeur pour la désintégration et la mise en suspension de matière première pour papier (S) comprenant :
    - un récipient (1) pour recevoir de l'eau et de la matière première pour papier (S) et
    - au moins un rotor (2) pouvant être entraîné et disposé dans le récipient (1),
    - lequel présente au moins deux pales pour faire circuler une suspension contenue dans le récipient, afin de désintégrer la matière première pour papier introduite et de la mettre en suspension dans l'eau, et comprenant aussi
    - au moins une toile (10) dont la surface de toile est balayée complètement ou en grande partie par le rotor en mouvement (2),
    caractérisé en ce que
    - le rotor (2) est pourvu de pales courbes (3) dont la surface (4) située vers l'avant dans le sens de rotation (6) sur le cercle circonférentiel (5) forme avec ce dernier un angle (α) de 20° maximum et
    - en ce que le côté supérieur des pales courbes (3) est pourvu de nervures de travail (7) saillant dans le sens de rotation (6), dont l'angle de coupe (β) avec le cercle circonférentiel (5) vaut au moins 40°, de préférence au moins 60°.
  2. Pulpeur selon la revendication 1,
    caractérisé en ce que
    le récipient (1) pour l'introduction de la matière première pour papier (S) est ouvert en haut.
  3. Pulpeur selon la revendication 1 ou 2,
    caractérisé en ce que
    la toile (10) est plane et de forme annulaire circulaire.
  4. Pulpeur selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    le pulpeur présente une toile unique plane (10) qui est partiellement ou complètement balayée par le rotor en mouvement (2).
  5. Pulpeur selon la revendication 1, 2, 3 ou 4,
    caractérisé en ce que
    la plus petite distance (A) entre la toile (10) et le côté de la pale (3) tourné vers la toile est comprise entre 1 et 20 mm.
  6. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les arêtes de travail (8) des nervures de travail (7) situées vers l'avant dans le sens de rotation sont droites.
  7. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'étendue axiale (B) des nervures de travail (7) sur le cercle circonférentiel (5) est comprise entre 5 et 20% de l'étendue axiale de la pale (3).
  8. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'étendue radiale maximale (C) des nervures de travail saillantes est comprise entre 5 et 30% du rayon du cercle circonférentiel (5).
  9. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le côté supérieur (16) et/ou le côté inférieur (15) des nervures de travail (7) sont essentiellement plans et orientés de telle sorte qu'ils ne soient pas inclinés ou seulement inclinés de 5° au maximum par rapport à un plan perpendiculaire à l'axe du rotor (2).
  10. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la surface (4) de la pale (3) située vers l'avant dans le sens de rotation (6) n'est pas inclinée par rapport à la direction axiale du rotor (2).
  11. Pulpeur selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    la surface (4) de la pale (3) située vers l'avant dans le sens de rotation (6) présente, par rapport à la direction axiale du rotor (2), un angle d'inclinaison (γ) qui est compris entre 1° et 45°, de préférence entre 15° et 30°, et qui est orienté de telle sorte que les parties de ce côté avant éloignées de la toile fassent saillie dans le sens de rotation (6) .
  12. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la transition entre les nervures de travail (7) et les arêtes avant de la pale (3) est arrondie dans la région radialement extérieure.
  13. Pulpeur selon la revendication 12,
    caractérisé en ce que
    l'arrondi (13) présente un rayon de courbure qui est compris entre 20 et 60% de l'étendue axiale de la pale (3).
  14. Pulpeur selon la revendication 12,
    caractérisé en ce que
    l'arrondi (13) correspond à un quart d'ellipse.
  15. Pulpeur selon la revendication 12, 13 ou 14,
    caractérisé en ce que
    l'arrondi (13) est le plus important dans la région radialement extérieure de la pale (3) et diminue constamment vers la région radialement intérieure.
  16. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les nervures de travail (7) se composent d'un matériau fortement résistant à l'usure, en particulier de métal dur.
  17. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les nervures de travail (7) sont fixées de manière détachable aux pales (3).
  18. Pulpeur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'étendue axiale maximale (E) du rotor (2) présente une valeur comprise entre 8% et 35% du diamètre du cercle circonférentiel (5), de préférence entre 10% et 20%.
  19. Rotor (2) pour un pulpeur pour la désintégration et la mise en suspension de matière première pour papier (S) dans de l'eau (W),
    dans lequel le pulpeur présente un récipient (1) pour recevoir de l'eau et de la matière première pour papier (S) et au moins une toile (10), dont la surface de toile est balayée complètement ou en grande partie par le rotor en mouvement (2),
    le rotor (2) présentant au moins deux pales pour faire circuler une suspension contenue dans le récipient, afin de désintégrer la matière première pour papier introduite et de la mettre en suspension dans l'eau,
    caractérisé en ce que
    - le rotor (2) est pourvu de pales courbes (3) dont la surface (4) située vers l'avant dans le sens de rotation (6) sur le cercle circonférentiel (5) forme avec ce dernier un angle (α) de 20° maximum et
    - en ce que le côté supérieur des pales courbes (3) est pourvu de nervures de travail (7) saillant dans le sens de rotation (6), dont l'angle de coupe (β) avec le cercle circonférentiel (5) vaut au moins 40°, de préférence au moins 60°.
EP06000661A 2005-02-22 2006-01-13 Pulpeur pour la disintégration et pour mettre en suspension de matière première de papier et son rotor Active EP1693505B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005007972A DE102005007972A1 (de) 2005-02-22 2005-02-22 Stofflöser zur Zerkleinerung und Suspendierung von Papierstoff sowie Rotor für einen solchen Stofflöser

Publications (2)

Publication Number Publication Date
EP1693505A1 EP1693505A1 (fr) 2006-08-23
EP1693505B1 true EP1693505B1 (fr) 2008-11-26

Family

ID=36498965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06000661A Active EP1693505B1 (fr) 2005-02-22 2006-01-13 Pulpeur pour la disintégration et pour mettre en suspension de matière première de papier et son rotor

Country Status (4)

Country Link
EP (1) EP1693505B1 (fr)
AT (1) ATE415514T1 (fr)
DE (2) DE102005007972A1 (fr)
ES (1) ES2318591T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015242A (zh) * 2013-01-22 2013-04-03 富民宝地纸业有限公司 一种废纸造浆切削用高效旋刀装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009017951U1 (de) 2009-10-13 2010-10-21 Voith Patent Gmbh Stofflöser
CN101912743B (zh) * 2010-08-10 2012-04-18 杭州三拓印染设备技术开发有限公司 打浆机叶片
DE202011110357U1 (de) * 2011-03-03 2013-09-09 Voith Patent Gmbh Rotor
DE102018109634A1 (de) * 2018-04-23 2019-10-24 Voith Patent Gmbh Stoffauflöser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE844116C (de) 1947-12-08 1952-07-17 Leje & Thurne Aktiebolag Zerkleinerungsmaschine zur Behandlung von Zellstoff und/oder Altpapier
DE1185467B (de) * 1961-04-07 1965-01-14 Tello Maviglia Vorrichtung zum Aufloesen von Faserstoffen zur Herstellung von Papier
US3889885A (en) * 1974-01-11 1975-06-17 Black Clawson Co Pulping apparatus
US4480796A (en) 1982-01-25 1984-11-06 Beloit Corporation Pulping apparatus including improved rotor
FI72356C (fi) * 1985-12-31 1987-05-11 Yhtyneet Paperitehtaat Oy Anordning foer destruktion av papper och kartong.
DE10254544A1 (de) 2002-09-26 2004-04-08 Edelstahl Jansen Gmbh Rotor, Leiteinrichtung für einen Rotor und Verfahren zum Herstellen und/oder Instandhalten eines Rotors sowie Verwendung eines Blechstreifens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015242A (zh) * 2013-01-22 2013-04-03 富民宝地纸业有限公司 一种废纸造浆切削用高效旋刀装置
CN103015242B (zh) * 2013-01-22 2015-05-13 富民宝地纸业有限公司 一种废纸造浆切削用高效旋刀装置

Also Published As

Publication number Publication date
DE502006002152D1 (de) 2009-01-08
DE102005007972A1 (de) 2006-08-24
EP1693505A1 (fr) 2006-08-23
ATE415514T1 (de) 2008-12-15
ES2318591T3 (es) 2009-05-01

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