EP1749922A1 - Disque ou segment de disque et appareil comprenant tels disques ou segments de disque - Google Patents

Disque ou segment de disque et appareil comprenant tels disques ou segments de disque Download PDF

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Publication number
EP1749922A1
EP1749922A1 EP06013801A EP06013801A EP1749922A1 EP 1749922 A1 EP1749922 A1 EP 1749922A1 EP 06013801 A EP06013801 A EP 06013801A EP 06013801 A EP06013801 A EP 06013801A EP 1749922 A1 EP1749922 A1 EP 1749922A1
Authority
EP
European Patent Office
Prior art keywords
elevations
plate
depressions
segment according
plates
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.)
Granted
Application number
EP06013801A
Other languages
German (de)
English (en)
Other versions
EP1749922B1 (fr
Inventor
Andreas Gorton-Hülgerth
Josef Glawogger
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.)
Andritz AG
Original Assignee
Andritz AG
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 Andritz AG filed Critical Andritz AG
Publication of EP1749922A1 publication Critical patent/EP1749922A1/fr
Application granted granted Critical
Publication of EP1749922B1 publication Critical patent/EP1749922B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/306—Discs

Definitions

  • the invention relates to a plate or a plate segment with circular elevations and depressions and a device with such plates or plate segments.
  • Such plates or plate segments are e.g. used in dispersers, grinders and de-papering papermaking.
  • Dispersing devices serve to improve the quality of pulp suspensions and, in particular, to remove paint particles from the fibers and to reduce the size of the paint particles and other debris below a visible size.
  • the pulp suspension between two circular plates, one of which is stationary and the other is rotated, transported radially outward through a gap between these plates, wherein the pulp suspension or the fibers are exposed in this suspension high shear forces.
  • the plates or plate segments have e.g. the disperser, circular arc-shaped elevations and depressions between these surveys, wherein the elevations are formed by elongated teeth, which are aligned in the radial direction.
  • the rows of teeth engage in the circular-arc-shaped recesses of the opposite plate, wherein the pulp suspension partially flows through radially between the teeth and are partially exposed between the teeth and the opposite plate the shear forces mentioned.
  • the invention is based on the object to provide plates or plate segments and devices with such plates or plate segments, in particular for dispersing, but also grinding devices and Entstipper available with which the dispersing, grinding and de-staking on the one hand more effective and on the other hand fiber-friendly can be performed.
  • teeth are dispensed with in at least part of the elevations, that is to say that the elevations are of continuous circular arc shape. It has been found that such an embodiment of the protuberances not only brings increased fiber protection, since the shearing forces are introduced gently via the friction and not over the edges of the teeth, but also that the entire pulp suspension disperses more effectively, is milled or entstippt because the entire pulp suspension must flow through the gap between the elevations and the opposite plate and thus processed without it being possible, as in the prior art, that a part of the pulp suspension through the spaces between the teeth can flow through without being dispersed, ground or staked.
  • the device according to the invention can preferably also be used at elevated power to increase the strength values (grinding).
  • the elevations and / or the elevations associated depressions may be either rectangular, trapezoidal, triangular, round or partially rounded, where the cross-sectional shape of all elevations and / or depressions may be performed substantially the same.
  • the cross-sectional shape of individual elevations and / or depressions or groups of elevations and / or depressions are designed differently.
  • the choice of the shape of the surveys and the decision as to whether all elevations and / or depressions are the same or different depends on the particular application, i. the subsequent intended use of the pulp suspension and thus the quality to be produced, and is dependent on it.
  • the height or depth of the elevations or depressions increases radially from the inside to the outside. This improves the dispersing or grinding action or deflaking.
  • a preferred embodiment of the invention may further be provided that continuous circular arc-shaped elevations and elevations with interruptions, which are designed in particular tooth-shaped, are provided.
  • the surveys according to the invention made in a continuous circular arc are combined with projections, as known from the prior art and e.g. tooth-shaped executed.
  • advantages of the present invention continuously circular arc running surveys can be combined with advantages associated with tooth-shaped elevations.
  • the elevations in the radially outer region are continuously circular arc-shaped, whereas they in the radially inner region with Interruptions are executed or vice versa. It is also possible that continuously circular arcs and elevations alternate with interruptions.
  • the selection of the combination depends on the quality of the fibrous suspension to be processed or the quality of the pulp suspension to be produced and can be carried out arbitrarily within the scope of the invention.
  • Another advantage of the invention is that the wear and thus wear-related costs can be significantly reduced, since the continuous surfaces of the circular arc-shaped elevations are subject to much lower wear than the teeth in the prior art and that the power requirement of the device can be reduced.
  • an advantage lies in the fact that in embodiments of devices which operate under high vapor pressure, in particular dispersed by the pulp suspension is supplied under high vapor pressure, the vapor-tightness of the device is substantially higher, since the pressurized steam standing up the technique between the teeth could escape radially outward, which is no longer possible in the device according to the invention in the continuous elevations.
  • the gap width decreases radially from the inside out.
  • the cross-sectional area of the gap would increase linearly from inside to outside at a constant gap distance, so that the flow velocity would be correspondingly reduced, which can be prevented by the gap width decreasing outwards.
  • FIG. 1 shows schematically in axial section plates of a dispersing device according to the invention
  • 2 shows a dispersing plate segment according to the invention in plan view
  • FIGS. 3-6 show cross-sectional shapes of plate segments in a section along the line III-III in FIG. 2
  • Fig. 1 two support plates are shown schematically 1.2 a dispersing device, of which the support plate 1 is mounted rigidly and the support plate 2 fixed to a drive shaft 3 is rotated about an axis 4. Fibrous suspension is supplied through a central opening 5 in the support plate 1, as symbolized by the arrows 6, and therefore flows from the inside to the outside through a gap 7, while it is dispersed.
  • Dispergierplattensegmente 8 are fixed to the support plates 1 and 2, on which elevations 9 and depressions 10 are mounted, which interlock with the elevations 9 and depressions 10 of the opposite Dispergierplattensegmente mutually interlocked.
  • plate segments and annular plates can be used, which are mounted either on the support plates 1, 2 or directly to the drive shaft 3 or fixed to the housing.
  • the elevations 9 are, as shown particularly in Fig. 2 on a Dispergierplattensegment 8, continuously circular arc-shaped, although it is possible within the scope of the invention that not all elevations 9 are continuously circular arc-shaped, but it is also possible that continuous circular arc-shaped elevations 9 individually with alternating known from the prior art tooth-shaped elevations or groups of circular arcs elevations alternating with groups of tooth-shaped elevations. It is also possible that, for example, only tooth-shaped elevations are located in the radially inner area, whereas in the radially outer area there are only continuously circular elevations and vice versa.
  • elevations 9 various embodiments are conceivable, for example in Fig.3 rectangular elevations 9a, in Fig. Trapezoidal elevations 9b, in Fig. 5 triangular elevations 9c and in Fig. 6 rounded elevations 9d are shown. Accordingly, the depressions 10a to 10c are also rectangular, trapezoidal or rounded.
  • dispersing plate segments 8 are shown in which all elevations 9a to 9d on a segment 8 always have the same cross-sectional shape. However, it is also possible to combine the cross-sectional shape of the individual elevations 9a to 9d and depressions 10a to 10c so that any combinations of elevations 9a to 9d and corresponding depressions 10a to 10c can be present on a segment 8. These cross-sectional shapes and combinations thereof are equally applicable to annular plates.
  • the width of the gap 7 in the invention can decrease from inside to outside, e.g. a constant flow rate of the pulp suspension can be ensured from the inside out.

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  • Paper (AREA)
EP06013801A 2005-08-04 2006-07-04 Dispositif pour le traitement d'une suspension fibreuse et segment de disque pour l'usage dans un tel dispositif Not-in-force EP1749922B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0131905A AT502541B1 (de) 2005-08-04 2005-08-04 Platte oder plattensegment sowie vorrichtung mit derartigen platten oder plattensegmenten

Publications (2)

Publication Number Publication Date
EP1749922A1 true EP1749922A1 (fr) 2007-02-07
EP1749922B1 EP1749922B1 (fr) 2012-06-13

Family

ID=37307051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06013801A Not-in-force EP1749922B1 (fr) 2005-08-04 2006-07-04 Dispositif pour le traitement d'une suspension fibreuse et segment de disque pour l'usage dans un tel dispositif

Country Status (4)

Country Link
US (1) US20070029424A1 (fr)
EP (1) EP1749922B1 (fr)
AT (1) AT502541B1 (fr)
CA (1) CA2551772A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009097963A2 (fr) * 2008-02-07 2009-08-13 Voith Patent Gmbh Dispositif de traitement de matières fibreuses pour la production de papier ou de carton
ITVR20100165A1 (it) * 2010-08-06 2012-02-07 Airaghi S R L Off Parte di ricambio per raffinatori a dischi per la produzione di carta
EP2562307A1 (fr) 2011-08-26 2013-02-27 Officine Airaghi Srl Pièces de rechange pour raffineurs à disques pour la production de papier
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8882010B2 (en) * 2008-01-29 2014-11-11 The Violina Syndicate, Llc Herb grinder
US9015140B2 (en) * 2010-12-30 2015-04-21 Yahoo! Inc. System and method for providing contextual actions on a search results page
CN111270543B (zh) * 2020-02-27 2022-06-21 安德里茨（中国）有限公司 磨浆机磨盘、磨浆机转子以及具有此磨浆机磨盘的磨浆机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795603A (en) * 1928-03-08 1931-03-10 Bauer Bros Co Method of producing pulp
DE1048769B (de) 1959-01-15 Hett Muten berg/M Wilhelm Scheibenmühle insbesondere zum Zerkleinern und Auflosen von Fa serstoften fur die Papierindustrie
CH355770A (de) * 1957-04-30 1961-07-31 Forsch Inst Professor Ing Chem Verfahren und Apparatur zur kontinuierlichen oder chargenweisen Behandlung von Stoffen und Stoffgemischen
US3411720A (en) * 1966-08-18 1968-11-19 Cons Paper Bahamas Ltd Production of mechanical pulp from wood chips
DE1561633A1 (de) * 1966-10-27 1970-04-09 Kamyr Ab Mahlwerk
EP1147806A1 (fr) * 2000-04-11 2001-10-24 Voith Paper Patent GmbH Appareil pour disperser une pâte à papier de haute consistence et garnitures pour cet appareil
DE10105281A1 (de) * 2001-02-06 2002-08-08 Voith Paper Patent Gmbh Vorrichtung zur Dispergierung eines Papierfaserstoffes

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH356351A (de) * 1957-05-02 1961-08-15 Hett Wilhelm Maschine zum Zerkleinern von Stoff und Stoff-Suspensionen
US2988290A (en) * 1958-03-22 1961-06-13 Condux Werk Crushers and grinding disks therefor
DE2202798A1 (de) * 1972-01-21 1973-08-02 Johann Georg Dr Med Schnitzer Mahlsteinpaar fuer getreidemuehlen
DE2416654C3 (de) * 1974-04-05 1980-09-04 De Forenede Bryggerier A/S, Kopenhagen Mahlscheibe für Scheibenmühlen
CH595138A5 (fr) * 1974-07-18 1978-01-31 Schnitzer Johann G
US4166584A (en) * 1975-09-05 1979-09-04 Asplund Arne J A Apparatus for producing pulp from lignocellulose-containing material
US4131061A (en) * 1976-06-01 1978-12-26 The Bauer Bros. Co. System and apparatus for milling corn starch and like raw materials
US4749135A (en) * 1982-09-07 1988-06-07 General Nutrition, Inc. Peanut grinding apparatus
US5042726A (en) * 1989-11-13 1991-08-27 Sunds Defibrator Ab Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus
FR2718469B1 (fr) * 1994-04-08 1996-03-29 Arte Garniture pour raffineur de pâte.
EP0737775A3 (fr) * 1995-04-13 1998-01-28 Peter Müller Ges.m.b.H. & Co. KG. Disque ou segment de disque pour raffineurs à disques
US6402071B1 (en) * 1999-11-23 2002-06-11 Durametal Corporation Refiner plates with injector inlet
US7172148B2 (en) * 2004-02-05 2007-02-06 Andritz Inc. Grooved pyramid disperger plate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048769B (de) 1959-01-15 Hett Muten berg/M Wilhelm Scheibenmühle insbesondere zum Zerkleinern und Auflosen von Fa serstoften fur die Papierindustrie
US1795603A (en) * 1928-03-08 1931-03-10 Bauer Bros Co Method of producing pulp
CH355770A (de) * 1957-04-30 1961-07-31 Forsch Inst Professor Ing Chem Verfahren und Apparatur zur kontinuierlichen oder chargenweisen Behandlung von Stoffen und Stoffgemischen
US3411720A (en) * 1966-08-18 1968-11-19 Cons Paper Bahamas Ltd Production of mechanical pulp from wood chips
DE1561633A1 (de) * 1966-10-27 1970-04-09 Kamyr Ab Mahlwerk
EP1147806A1 (fr) * 2000-04-11 2001-10-24 Voith Paper Patent GmbH Appareil pour disperser une pâte à papier de haute consistence et garnitures pour cet appareil
DE10105281A1 (de) * 2001-02-06 2002-08-08 Voith Paper Patent Gmbh Vorrichtung zur Dispergierung eines Papierfaserstoffes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009097963A2 (fr) * 2008-02-07 2009-08-13 Voith Patent Gmbh Dispositif de traitement de matières fibreuses pour la production de papier ou de carton
DE102008007888A1 (de) * 2008-02-07 2009-08-13 Voith Patent Gmbh Vorrichtung zur Bearbeitung von Faserstoff für die Papier- oder Kartonerzeugung
WO2009097963A3 (fr) * 2008-02-07 2009-10-01 Voith Patent Gmbh Dispositif de traitement de matières fibreuses pour la production de papier ou de carton
ITVR20100165A1 (it) * 2010-08-06 2012-02-07 Airaghi S R L Off Parte di ricambio per raffinatori a dischi per la produzione di carta
US8870109B2 (en) 2010-08-06 2014-10-28 Officine Airaghi S.R.L. Spare part for disc refiners for the production of paper
EP2562307A1 (fr) 2011-08-26 2013-02-27 Officine Airaghi Srl Pièces de rechange pour raffineurs à disques pour la production de papier
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation

Also Published As

Publication number Publication date
AT502541A1 (de) 2007-04-15
AT502541B1 (de) 2008-01-15
US20070029424A1 (en) 2007-02-08
CA2551772A1 (fr) 2007-02-04
EP1749922B1 (fr) 2012-06-13

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