EP0731210A2 - Machine de raffinage et outil de raffinage pour le raffinage des matières fibreuses en suspension - Google Patents

Machine de raffinage et outil de raffinage pour le raffinage des matières fibreuses en suspension Download PDF

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Publication number
EP0731210A2
EP0731210A2 EP96102493A EP96102493A EP0731210A2 EP 0731210 A2 EP0731210 A2 EP 0731210A2 EP 96102493 A EP96102493 A EP 96102493A EP 96102493 A EP96102493 A EP 96102493A EP 0731210 A2 EP0731210 A2 EP 0731210A2
Authority
EP
European Patent Office
Prior art keywords
grinding
strip
grinding tool
shaped elevations
tool according
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
EP96102493A
Other languages
German (de)
English (en)
Other versions
EP0731210B1 (fr
EP0731210A3 (fr
Inventor
Frank Dr. Meltzer
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 Paper Fiber and Environmental Solutions GmbH and Co KG
Original Assignee
Voith Sulzer Stoffaufbereitung 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 Sulzer Stoffaufbereitung GmbH filed Critical Voith Sulzer Stoffaufbereitung GmbH
Publication of EP0731210A2 publication Critical patent/EP0731210A2/fr
Publication of EP0731210A3 publication Critical patent/EP0731210A3/fr
Application granted granted Critical
Publication of EP0731210B1 publication Critical patent/EP0731210B1/fr
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
    • 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
    • D21D1/22—Jordans
    • 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

Definitions

  • the invention relates to devices for grinding suspended fibrous material according to the preamble of claim 1 or 5.
  • Grinding tools of the type mentioned are often also called sets and installed in grinding machines - so-called refiners.
  • Such grinding machines have at least one rotor and at least one stator with either disc-ring or truncated cone-shaped surfaces on which the grinding tools or fittings are attached, so that grinding gaps can form between them.
  • the grinding tools considered here have webs and grooves on the work surfaces, which is why one speaks of "knife sets".
  • an annular grinding surface is often produced by assembling a number of identical ring segments until a full circumference with a center point common to all segments results.
  • a grinding tool provided for the grinding of wood pulp is shown in DE-OS 25 22 349. It is a knife set with a special inner ring section, which serves to break up the incoming wood pulp, not the intended change in the fibers themselves during grinding.
  • the refining device shown in DE-OS 26 09 727 is primarily tailored to the requirements, which are made with mechanical wood pulp. Therefore, the actual grinding zone is preceded by an internal "refine zone" in which the fiber material is broken down almost to the individual fiber. The actual grinding of the fibers only then takes place in the radially outer grinding zone.
  • the invention thus creates grinding devices in which the energy used can be better used for grinding the fibrous material. It has been shown that it is not only the increase in grinding degree that can be achieved more economically, but that a relatively good preservation of the fiber lengths and fiber strengths is possible with the grinding. As already indicated, the assessment of the effect will always be based on the grinding developments that have been achievable to date, which is why it does not make sense to generally specify a fixed numerical value here. The investigations on the subject of the invention show in any case a significant reduction in the energy required, without sacrificing fiber quality.
  • a significant innovation compared to the prior art is an improved flow guidance in the gap between the rotor and the stator through which the pulp suspension flows during the operation of the grinding device.
  • the fibers are changed by strong forces, with only a very small distance between the working surfaces being set during the grinding process. Since there are several strips one behind the other, viewed in the direction of the channels, on the work surface defined in this way, each of which has a spacing of at least 8 mm, according to the invention, there are several intermediate zones in which the suspension from the grinding area in front of it, that is to say already ground, is taken up and can then be fed to the subsequent grinding area.
  • Such an intermediate zone presumably has a double use, since it promotes both the desirable partial recirculation of the suspension that has already been ground to the grinding area in front of it and the smoothing of the flow in the subsequent grinding area. This can improve the grinding result, in particular the grinding can be more uniform.
  • Such intermediate zones can be created by grooves which e.g. are circular. Polygonal-shaped grooves are also particularly advantageous, since they reduce the sometimes somewhat critical wear of grinding tools in the groove area.
  • a special strip-free area can additionally be created, through which the suspension first flows before it comes into the grinding area of the grinding machine or grinding tool under consideration. So before or when the suspension enters the knife area of the grinding device there is a rotation zone provided that borders on a rotating surface, but in which there are no webs on at least one side. No grinding takes place in this annular zone. A possible reason for the further improvement in economy could be the equalization of the suspension flow as it enters the grinding zone. Said annular zone can be formed by designing the actual grinding machine or, according to claim 9, in the radially inner zone of the grinding tools themselves.
  • Fig. 1 shows the subject of the invention in the form of a disc refiner.
  • a part of the housing 1, the rotor 2 and the stator 3 can be seen.
  • the rotor and stator serve as grinding tool carriers.
  • the suspended fibrous material can be fed in through the inlet opening 5 and discharged through the outlet opening 6.
  • the rotor 2 is axially fixed, while the stator 3 is axially movable relative to the rotor 2, being prevented from rotating by bolts 15.
  • the rotor 2 has a working surface 7 and the stator 3 has a complementary further working surface 8.
  • a grinding gap 9 is formed between the two working surfaces.
  • In the area of the work surfaces 7, 8 there are strip-shaped elevations 10 on the rotor 2 and strip-shaped elevations 11 on the stator 3.
  • FIG. 2 shows a section of the subject matter of FIG. 1 with part of the stator 3.
  • the dimensions a 'and a' 'between the strip-shaped elevations 11 can be seen as well as the dimension a by which the base area 14 of the grinding tool is radial extends further inwards than the elevation 11.
  • the elevation has the height c above the base area 14.
  • FIG. 3 schematically shows a diagram which shows the grinding development M as a function of the grinding energy E.
  • the grinding development proceeds according to curve A2, while a faster grinding development, curve A1, can be achieved with the aid of the invention.
  • curve A2 a faster grinding development
  • the qualitative values depend very much on the substance used, and the diagram only serves to illustrate the benefits that can be achieved.
  • FIG. 4 and 5 further embodiments are basically sketched using a disc refiner.
  • the interruptions of the strips by grooves can namely be on the stator side (FIG. 4), on the rotor side (FIG. 5) or - as already shown in FIG. 1 - on both sides.
  • the object on FIG. 6 differs from that of FIG. 2 in that not only the actual strip 11, but also the grinding tool mounted on the stator 3 itself is interrupted by grooves.
  • the principle shown in FIG. 6 can also be applied to the other combinations according to FIG. 1, 4 or 5.
  • Fig. 7 outlines a cone refiner, in which the elevations 10 lying on the working surface of the rotor 2 are interrupted by grooves. In contrast to what is shown here, in other cases the stator 3 can also have elevations 11 with interruptions.
  • FIG. 8 shows the top view of a typical work surface found on disc refiners with a plurality of elevations 10 with a width b, which are of different designs here, and the channel-like grooves 12 lying therebetween. Furthermore, there are grooves 16, namely annular grooves, with the dimensions a ', a' '.
  • the elevations 10 are also shorter by the internal dimension a than the base area 13. This representation is to be understood as part / segment of the entire circumference.
  • the complementary working surface usually has the same pattern with regard to the elevations, with what has already been said in connection with FIGS. 1 and 4-6 for the existence of the free dimensions a, a ', a' '.
  • the complementary work surface can also be designed very differently, e.g. have different knife angles, be flatly porous or have a pimple or hole pattern.
  • the grinding tool according to FIG. 9 is similar to that of FIG. 8, but has two polygenic recesses 17, which results in three grinding areas 18, 18 'and 18''lying one behind the other. Here only one of the segments of 45 o is drawn, from which an annular set can be assembled.

Landscapes

  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Paper (AREA)
EP96102493A 1995-03-08 1996-02-20 Machine de raffinage et outil de raffinage pour le raffinage des matières fibreuses en suspension Expired - Lifetime EP0731210B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508202 1995-03-08
DE19508202A DE19508202A1 (de) 1995-03-08 1995-03-08 Mahlmaschine und Mahlwerkzeug zum Mahlen von suspendiertem Faserstoffmaterial

Publications (3)

Publication Number Publication Date
EP0731210A2 true EP0731210A2 (fr) 1996-09-11
EP0731210A3 EP0731210A3 (fr) 1998-06-10
EP0731210B1 EP0731210B1 (fr) 2001-04-04

Family

ID=7756022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102493A Expired - Lifetime EP0731210B1 (fr) 1995-03-08 1996-02-20 Machine de raffinage et outil de raffinage pour le raffinage des matières fibreuses en suspension

Country Status (5)

Country Link
US (1) US5779168A (fr)
EP (1) EP0731210B1 (fr)
AT (1) ATE200321T1 (fr)
DE (2) DE19508202A1 (fr)
FI (1) FI961078A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806450A1 (fr) 2006-01-09 2007-07-11 Andritz Inc. Disques pour raffineur à ailettes ayant des angles d' avancement variables et procédé de raffinage
EP1806449A3 (fr) * 2006-01-09 2007-07-18 Andritz Inc. Disque pour raffineur muni d' ailettes extérieures inclinées pour detourner la pulpe et procédé de raffinage
WO2020015883A1 (fr) * 2018-07-18 2020-01-23 Jarolim Michael Dispositif et procédé de traitement de fibres

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754807C2 (de) * 1997-12-10 1999-11-18 Voith Sulzer Papiertech Patent Verfahren zur Herstellung von Garnituren für das mechanische Bearbeiten von suspendiertem Faserstoffmaterial sowie nach dem Verfahren hergestellte Garnitur
DE19923865A1 (de) 1999-05-25 2000-11-30 Voith Sulzer Papiertech Patent Verfahren zur Herstellung von Garnituren für das mechanische Bearbeiten von wasserhaltigem Papierfaserstoff
DE10258324B4 (de) * 2002-12-13 2008-03-27 Voith Patent Gmbh Verfahren zur Herstellung von Garnituren für das Mahlen von wasserhaltigem Papierfaserstoff
JP2007113138A (ja) * 2005-10-20 2007-05-10 Aikawa Iron Works Co Ltd リファイナ
FI122889B (fi) * 2010-12-31 2012-08-31 Upm Kymmene Corp Menetelmä ja laitteisto nanoselluloosan valmistamiseksi
WO2012149889A1 (fr) * 2011-05-01 2012-11-08 浙江黑白矿山机械有限公司 Paire de broyage rotative à surfaces irrégulières

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522349A1 (de) * 1974-05-20 1975-12-04 Westvaco Corp Feinmuehle fuer holzschliff geringer konsistenz
DE2609727A1 (de) * 1975-03-12 1976-09-23 Sca Development Ab Refine-einrichtung
US4023739A (en) * 1975-04-09 1977-05-17 Uddeholms Aktiebolag Lining element for pulp refiners

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654295A (en) * 1951-05-02 1953-10-06 Sutherland Refiner Corp Refiner apparatus
US5200038A (en) * 1985-08-28 1993-04-06 International Paper Company Pulp refiner with fluidizing inlet
SU1390281A1 (ru) * 1986-05-30 1988-04-23 Пермский филиал Всесоюзного научно-исследовательского института целлюлозно-бумажной промышленности Гарнитура дисковой мельницы дл размола волокнистого материала
DE3628195A1 (de) * 1986-08-20 1988-02-25 Siemens Ag Refiner zur bearbeitung von fasermaterial

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522349A1 (de) * 1974-05-20 1975-12-04 Westvaco Corp Feinmuehle fuer holzschliff geringer konsistenz
DE2609727A1 (de) * 1975-03-12 1976-09-23 Sca Development Ab Refine-einrichtung
US4023739A (en) * 1975-04-09 1977-05-17 Uddeholms Aktiebolag Lining element for pulp refiners

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806450A1 (fr) 2006-01-09 2007-07-11 Andritz Inc. Disques pour raffineur à ailettes ayant des angles d' avancement variables et procédé de raffinage
EP1806449A3 (fr) * 2006-01-09 2007-07-18 Andritz Inc. Disque pour raffineur muni d' ailettes extérieures inclinées pour detourner la pulpe et procédé de raffinage
CN100999879B (zh) * 2006-01-09 2013-04-17 安德里兹有限公司 具有倾斜以偏转浆体的外排齿的精磨机定子板
WO2020015883A1 (fr) * 2018-07-18 2020-01-23 Jarolim Michael Dispositif et procédé de traitement de fibres
CN112424420A (zh) * 2018-07-18 2021-02-26 迈克尔·亚罗利姆 用于处理纤维的设备和方法
US12006627B2 (en) 2018-07-18 2024-06-11 Michael JAROLIM Device and method for treating fibres

Also Published As

Publication number Publication date
FI961078A0 (fi) 1996-03-07
US5779168A (en) 1998-07-14
ATE200321T1 (de) 2001-04-15
DE19508202A1 (de) 1996-09-12
DE59606687D1 (de) 2001-05-10
EP0731210B1 (fr) 2001-04-04
EP0731210A3 (fr) 1998-06-10
FI961078A (fi) 1996-09-09

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