EP0343023B1 - Breimaschine für die Papierherstellung - Google Patents

Breimaschine für die Papierherstellung Download PDF

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Publication number
EP0343023B1
EP0343023B1 EP89401001A EP89401001A EP0343023B1 EP 0343023 B1 EP0343023 B1 EP 0343023B1 EP 89401001 A EP89401001 A EP 89401001A EP 89401001 A EP89401001 A EP 89401001A EP 0343023 B1 EP0343023 B1 EP 0343023B1
Authority
EP
European Patent Office
Prior art keywords
pulper
papermaking pulp
wall
pulp according
vessel
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.)
Expired - Lifetime
Application number
EP89401001A
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English (en)
French (fr)
Other versions
EP0343023A1 (de
Inventor
Jean-Pierre Lamort
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.)
Kadant Lamort SAS
Original Assignee
E&M Lamort Fils SA
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 E&M Lamort Fils SA filed Critical E&M Lamort Fils SA
Publication of EP0343023A1 publication Critical patent/EP0343023A1/de
Application granted granted Critical
Publication of EP0343023B1 publication Critical patent/EP0343023B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21B1/345—Pulpers

Definitions

  • the present invention relates to a pulp disintegration device and in particular to a pulper for paper pulp.
  • the disintegration of the paper consists in transforming the paper from the dry and solid state to the pasty state in the presence of water.
  • the shredder pulpers have a rotor at the bottom of a tank and knives placed either on the bottom and side walls or on the rotor itself, these arrangements being combined with each other to obtain the best efficiency.
  • the paper is cut into small fragments as well as the foreign bodies which must be eliminated in the following treatments, for purifying the pulp.
  • the disintegrating pulpers generally comprise a vertical rotor located at the bottom of the tank, formed by a booster screw ending in a centrifugal turbine driving the paper in a violent movement, and this paper disintegrates by fiber-to-fiber friction.
  • the paper is not shredded and the impurities remain intact, thus leaving, for example, plastic sheets in the mass of the pulp.
  • impurities are sorted in additional devices described in patents FR-A 2,461,681 and FR-A 2,543,183.
  • US-A 3 506 202 describes a shredder pulper whose internal surface of the tank is provided with elements arranged so as to lift the dough and thus accelerate the return to the center of the tank.
  • European patent No. EP-A 0 122 991 describes a solution to this problem: the wall of material is divided, which tends to rise along the wall of the pulper, and the material is redirected towards the center of the container.
  • the organs which deflect and divide the wall of material consist of three deflectors or studs 100 of pyramidal shape, arranged on the wall of the pulper. Each stud has four generally triangular faces, the two lower faces forming deflectors.
  • the pyramids are symmetrical, and arranged in such a way that the lower faces are symmetrically inclined downwards by a same angle, one to the left, the other to the right, so that the wall of material rising along the wall divides on these two faces into two parts.
  • This device if it prevents the material from remaining attached to the wall of the pulper and the rotor from rotating in a vacuum, has the disadvantage of not stirring all the material regularly. Indeed, by dividing the flow into three flow bundles 101, the part of the material which is not deflected 102 remains attached to the wall while the rest is recirculated, as shown in FIG. 1. The material present in these areas of least agitation is therefore less well treated than the rest which gives a heterogeneous result to the disintegration.
  • the present invention aims to improve pulpers, whether or not of the helical type, making it possible to process a much denser mass of paper, up to 25% of dry matter, ie a 25% increase in current performance. , by forced recirculation of the dough.
  • the invention relates to an improved device for forced recirculation of high concentration material contained in the disintegrating pulper, more precisely it relates to a pulp pulp of the type comprising a cylindrical tank, open at its upper part, and a rotor in the bottom surmounted by a vertical shaft extending along the central axis of revolution of the tank in the interior of the tank, the side wall of the tank comprising a device for recirculating the dough, characterized in that the recirculation device comprises at least one surface element developing substantially circularly along the wall of the pulper, extending from the wall towards the inside of the tank and towards the upper opening of the pulper over a constant distance so to form a band of constant width, determining an oblique plane whose lower face looks downwards so that the dough meeting this force is diverted into the interior of the tank.
  • the pulper illustrated in the drawing is of the helical type described in patent FR-A 2,544,756 but this example of embodiment is not limiting and the invention relates to any type of pulper.
  • the pulper comprises a cylindrical tank 1 open at its upper part, with a central axis of revolution 2, provided in its bottom with a rotor 3, itself carrying a shaft 4 which extends towards the upper opening along the axis 2 of the pulper.
  • the shaft 4 carries helical discs 5 which, with the rotation of the rotor, impart to the suspended material 6 a vertical movement from top to bottom, the material being, at the bottom of the shaft, projected towards the side wall and then going up along the wall.
  • a forced recirculation device 7 intended to deflect the ascending current of the material along the wall and to orient it towards the upper end of the shaft 4.
  • this forced recirculation device comprises at least one surface element 8,21 developing substantially circularly along the wall 9 of the pulper, extending from the wall 9 towards the inside of the tank 1 and towards the upper opening 20 ⁇ of the pulper over a constant distance 12.22 so as to form a strip of constant width 12, one of the faces 8a, 24 of the element being oriented towards the bottom of the tank so that all of the material 6 meeting this face 8a, 24 is diverted and folded into the interior of the tank.
  • the forced recirculation device 7 comprises a closed circular crown 8, that is to say which forms a ring; it extends from the wall 9 towards the axis 2 of the tank, at an angle 10 ⁇ with the wall 9 of the tank; the surface formed by this inclined crown 8 produces a truncated cone, the top of which is on the side of the upper opening 20 ⁇ of the tank 1.
  • the angle 10 ⁇ of inclination of this ring 8 with the wall is between 10 ⁇ ° and 60 ⁇ ° and in the embodiment the angle chosen is 45 °.
  • the recirculation device is an angle iron having two wings 8a, 11 forming between them a right angle. This angle is bent into a circle of the same outside diameter as the inside diameter of the tank, and the ends of the two wings of the angle are assembled on the side wall 9 by any known means, for example, by welding.
  • the wing 8a has the function of a deflection ring.
  • the crown is mounted perpendicular to the axis 2 of the tank: the distance from the end of the shaft 4 to the lower end of the crown (or to the upper end) is constant.
  • the width 12 of the crown is between 10 ⁇ 0 ⁇ and 50 ⁇ 0 ⁇ millimeters.
  • the distance 13 between the upper end of the shaft 4 and the plane 14 defined by the upper end circle of the crown 8 varies between 0 ⁇ and 50 ⁇ 0 ⁇ millimeters.
  • each crown section, or element 21 is inclined upwards in the direction of rotation of the rotor.
  • the forced recirculation device comprises at least one surface element 21 which extends in a helix along the wall 9 of the pulper.
  • the crown 8 can be sectioned and bent helically, the ends then no longer being contiguous.
  • the element extends over 360 ⁇ ° at most. This variant destroys the isotropy of the deflection and is sufficient to avoid the formation of a vault.
  • the elements consist of a metal strip of constant width 22 which, according to the invention, extends from the wall towards the upper opening 20 ⁇ , making, on the one hand an angle 10 ⁇ with the vertical, on the other leaves an angle 23 with the horizontal.
  • This surface element runs along the cylindrical wall of the pulper, forming a deflection surface helical, one of the faces 24 of which is oriented towards the bottom of the tank; the dough that meets this surface element is deflected and diverted into the tank but in a direction between the axis 2 and the wall, as shown in Figure 5.
  • the surface elements are made, either from an angle iron, or from a profiled metal strip.
  • the ends of each element 25 are closed with a corresponding triangular metallic element.
  • the number of elements 21 and their length are variable: they can succeed each other leaving an empty gap between them (as illustrated in Figure 3) or partially overlap ( Figure 4) so as to ensure the recirculation of the all of the material.
  • the angle 10 ⁇ of inclination of the surface element 21, like that of the crown 8, with the wall 9, is between 10 ⁇ ° and 60 ⁇ °, and preferably the angle is of the order of 35 ° at 45 °.
  • the angle of inclination 23 of the longitudinal direction of the propeller with the plane perpendicular to the axis of the pulper is between approximately 10 and 30 °, and preference is around 15 °.
  • the invention makes it possible to reduce the total processing time for an overall mass of paper (produced by a succession of treatments of identical batches of material) for an unchanged energy consumption: either by reducing the duration of each treatment at constant initial density, either by increasing the density and therefore by reducing the number of batches to be treated.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Claims (12)

1. Stofflöser für Papierbrei mit einem zylindrischen Bottich, der an seinem oberen Teil offen und mit einen Boden verschlossen ist, der einen Rotor aufweist, auf den eine vertikale Welle aufgesetzt ist, die sich längs der zentralen Drehachse des Bottichs in dessen Innerem erstreckt, wobei die Seitenwand des Bottichs eine Einrichtung zur Zwangsrückführung des Breis aufweist, dadurch gekennzeichnet, daß die Einrichtung zur Rückführung (7) wenigstens ein Flächenelement (8, 21) umfaßt, das im wesentlichen kreisförmig längs der Wand (9) des Stofflösers verläuft und sich von der Wand zum Inneren des Bottichs (1) hin und zur oberen Öffnung (20) des Stofflösers über eine konstante Strecke (12, 22) so erstreckt, daß es einen Rand konstanter Breite ausbildet, der eine schräge Ebene festgelegt, deren Unterseite (24) so nach unten gerichtet ist, daß der auf diese Seite (24) auftreffende Brei (6) allein in Richtung auf das Innere des Bottichs umgelenkt wird.
2. Stofflöser für Papierbrei nach Anspruch 1, dadurch gekennzeichnet, daß das Flächenelement ein kreisförmig geschlossener Kranz (8) ist, der einen Kegelstumpf ausbildet, der von der Wand zur Achse (2) des Bottichs hin verläuft und relativ zur Wand derart geneigt ist, daß die Spitze des Kegelstumpfes sich auf der Seite der oberen Öffnung (20̸) des Stofflösers befindet.
3. Stafflöser für Papierbrei nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zur Rückführung wenigstens ein Flächenelement (21) aufweist, das schraubenförmig längs der Wand (9) des Pulpers über höchstens 360° verläuft.
4. Stofflöser für Papierbrei nach Anspruch 3, dadurch gekennzeichnet, daß die Flächenelemente (21) kranzförmig um die Achse (2) des Stofflöser angeordnet sind und daß der Kranz in einer Ebene senkrecht zur Achse angeordnet ist.
5. Stofflöser für Papierbrei nach Anspruch 3, dadurch gekennzeichnet, daß die Flächenelemente (21) kreisförmig in Abständen mit Zwischenräume so verlaufen und angeordnet sind, daß ihre vertikale Projektion eine Folge von Kranzabschnitten bildet.
6. Stofflöser für Papierbrei nach Anspruch 3, dadurch gekennzeichnet, daß die Flächenelemente (21) kreisförmig verlaufend angeordnet sind und sich dabei einander teilweise so überdecken, daß ihre vertikale Projektion einen geschlossenen ununterbrochenen Kranz bildet.
7. Stofflöser für Papierbrei nach Anspruch 1, dadurch gekennzeichnet, daß der Neigungswinkel (10̸) des Flächenelementes (8, 21) relativ zur vertikalen Wand (9) des Stofflösers zwischen 10̸° und 60̸° beträgt.
8. Stofflöser für Papierbrei nach Anspruch 7, dadurch gekennzeichnet, daß der Neigungswinkel (10̸) im Bereich von 35° bis 45° liegt.
9. Stofflöser für Papierbrei nach Anspruch 1, dadurch gekennzeichnet, daß der Neigungswinkel (23) der Längsrichtung (24) mit der Ebene (25), die auf der Achse (2) des Pulpers senkrecht steht, im Bereich von 10̸° bis 30̸° liegt.
10. Stofflöser für Papierbrei nach Anspruch 1, dadurch gekennzeichnet, daß die Breite (12, 22) des Flächenelementes (8, 21) zwischen 10̸0̸ und 50̸0̸ Millimetern beträgt.
11. Stofflöser für Papierbrei nach Anspruch 2, dadurch gekennzeichnet, daß der Kranz (8) in einer zur Drehachse (2) des Bottichs senkrechten Ebene angeordnet ist.
12. Stofflöser für Papierbrei nach einem der Ansprüche 4 oder 11, dadurch gekennzeichnet, daß die Entfernung (13) zwischen dem oberen Ende der Rotorwelle (4) und der Ebene (14), die durch den Kreis des oberen Endes des Kranzes (8) festgelegt ist, oder der Ebene (15), die durch den Kreis des oberen Endes des durch die Anordnung der Elemente (21) erzeugte- Kranzes festgelegt wird,zwischen -50̸0̸ und +50̸0̸ Millimetern variiert.
EP89401001A 1988-04-18 1989-04-12 Breimaschine für die Papierherstellung Expired - Lifetime EP0343023B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805103 1988-04-18
FR8805103A FR2630139A1 (fr) 1988-04-18 1988-04-18 Pulpeur de pate a papier

Publications (2)

Publication Number Publication Date
EP0343023A1 EP0343023A1 (de) 1989-11-23
EP0343023B1 true EP0343023B1 (de) 1992-06-17

Family

ID=9365406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401001A Expired - Lifetime EP0343023B1 (de) 1988-04-18 1989-04-12 Breimaschine für die Papierherstellung

Country Status (7)

Country Link
US (1) US4938423A (de)
EP (1) EP0343023B1 (de)
JP (1) JPH0247380A (de)
DE (1) DE68901813T2 (de)
ES (1) ES2032122T3 (de)
FI (1) FI87808C (de)
FR (1) FR2630139A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762756A (en) * 1994-11-21 1998-06-09 The Black Clawson Company Methods and apparatus for pulping and deinking
AUPO314396A0 (en) * 1996-10-22 1996-11-14 Wood, Jeffrey Robert Pulping apparatus
DE102005045469A1 (de) * 2005-05-18 2006-11-30 Repa Boltersdorf Gmbh Verfahren zum Gewinnen von Fasern aus einer Fasern enthaltenden Mischung
DE102006045808B4 (de) * 2006-09-26 2016-02-18 Erni Production Gmbh & Co. Kg Steckverbinder mit Zugentlastung
CN104372706A (zh) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 一种内含导料螺旋的玻璃棉打浆装置
CN104372702B (zh) * 2014-12-15 2016-08-17 济南大学 一种低功耗低噪声的碎浆机
AT517870B1 (de) * 2015-10-30 2019-03-15 Chemiefaser Lenzing Ag Hochkonzentrationsmischer zur Herstellung einer Zellulosesuspension mit hoher Zellulosekonzentration
DE102016013071A1 (de) * 2016-06-28 2017-12-28 Hans-Joachim Boltersdorf Vorrichtung zur Behandlung von Material mit einem Behälter
CN106400563B (zh) * 2016-11-18 2017-11-03 绥阳县双龙纸业有限公司 水力碎浆机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1958020A (en) * 1931-10-30 1934-05-08 Lancaster Processes Inc Apparatus for disintegrating and dispersing
DE845896C (de) * 1950-01-28 1952-08-07 Sture Walfried Wicksell Stoffaufloeser
US3486702A (en) * 1966-11-01 1969-12-30 Papcel Celulosy Np Pulping apparatus
US3506202A (en) * 1967-03-31 1970-04-14 Edward H Cumpston Jr Pulper
FR2441681A1 (fr) * 1978-11-17 1980-06-13 Lamort E & M Perfectionnements aux procedes et appareils de desintegration de matieres cellulosiques
US4593861A (en) * 1982-08-12 1986-06-10 The Black Clawson Company Apparatus for pulping paper making stock at high consistencies
EP0122991A3 (de) * 1982-08-12 1985-02-06 The Black Clawson Company Vorrichtung und Verfahren zum Zerfasern von Papierfaserstoff mit hoher Stoffdichte
US4725007A (en) * 1983-02-28 1988-02-16 The Black Clawson Company Apparatus for pulping high consistency paper making stock
FR2543183B1 (fr) * 1983-03-25 1985-07-26 Lamort E & M Procede et dispositif de triage d'un melange de pate a papier et d'impuretes
FR2544756B1 (fr) * 1983-04-22 1985-08-30 Lamort E & M Perfectionnements aux turbines de defibrage

Also Published As

Publication number Publication date
JPH0247380A (ja) 1990-02-16
ES2032122T3 (es) 1993-01-01
DE68901813T2 (de) 1993-02-04
DE68901813D1 (de) 1992-07-23
EP0343023A1 (de) 1989-11-23
FI87808C (fi) 1993-02-25
FI891821A0 (fi) 1989-04-17
FR2630139A1 (fr) 1989-10-20
FI891821A (fi) 1989-10-19
US4938423A (en) 1990-07-03
FI87808B (fi) 1992-11-13

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