EP2683870A1 - Disperger - Google Patents
DispergerInfo
- Publication number
- EP2683870A1 EP2683870A1 EP12708125.5A EP12708125A EP2683870A1 EP 2683870 A1 EP2683870 A1 EP 2683870A1 EP 12708125 A EP12708125 A EP 12708125A EP 2683870 A1 EP2683870 A1 EP 2683870A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- tooth
- elevations
- treatment
- treatment tool
- 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
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 4
- 239000002657 fibrous material Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- D21D1/004—Methods of beating or refining including disperging or deflaking
- D21D1/006—Disc mills
-
- 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
- D21D1/004—Methods of beating or refining including disperging or deflaking
- D21D1/006—Disc mills
- D21D1/008—Discs
Definitions
- the invention relates to a device for the mechanical treatment of
- Treatment tool and a second treatment tool is arranged, wherein the treatment tools each have a rotationally symmetrical shape, are arranged coaxially to each other, in each case in a plurality of annular, concentric to their center rows arranged teeth between which
- Gaps are located, which are flowed through radially by the fibrous material and annular spaces are present between the rows of teeth, which are arranged so that at least one row of teeth of a treatment tool in an annular space of the other, complementary
- Devices of the above-mentioned Art be z. B. used to improve the quality of pulp, which was obtained from waste paper.
- paper pulp can be homogenized by dispersing and thereby significantly improved.
- a pulp which has a dry content of between 15 and 35% and to a
- the object of the invention is therefore to improve the efficiency of the treatment with the lowest possible energy consumption.
- this object is achieved in that at least a part of the tooth spaces has elevations that extend beyond the tooth base.
- the tooth spaces are largely flat and formed approximately at the level of the annular spaces between the rows of teeth.
- the pulp can no longer pass radially unhindered through the tooth gaps, which considerably increases the efficiency of the treatment. Therefore, it is also advantageous if the vast majority, preferably all tooth gaps have elevations that extend beyond the tooth base.
- the elevations have a cross section similar to the teeth in the radial direction, which is preferably designed in the shape of a truncated pyramid.
- the teeth and protrusions have an outgoing from the respective annular space reason that leads over the radial edge to the head.
- the flank angle ie the angle between the flanks of the teeth and the elevations with respect to the radials should differ only by a maximum of 20 °, preferably equal.
- the tooth gaps a must ensure certain cross-sectional area for the flow of the pulp. If this cross-sectional area is too small, there is a risk of clogging and an increased energy requirement.
- the distance between the edge of a tooth and the edge of the adjacent elevation in the radial direction should be between 1 and 5 mm, preferably between 2 and 3 mm.
- the tooth head should have a height between 10 and 40, preferably between 20 and 25 mm above the tooth base.
- the width of the teeth and the elevations in the circumferential direction is approximately the same and is preferably between 1 and 10 mm, in particular between 2 and 5 mm.
- the efficiency of the treatment can be further increased if teeth and / or elevations, preferably have radially extending grooves.
- radially extending grooves are understood that extend at least with a directional component perpendicular to the circumferential direction of the treatment tool.
- the pulp suspension flows through the gap between the
- Treatment tools usually from the inside out. While the treatment tools move relative to each other, the radially extending grooves form additional working edges, which improves the dispersion, in particular the dirt dot comminution, the ink separation and the sticky comminution.
- the energy consumption and wear can be significantly reduced.
- the groove extends over the entire tooth or the entire elevation or only over a part of the tooth or the elevation. For the same reason, it can be equally beneficial if both
- Treatment tools of oppositely driven rotors are formed or a treatment tool of a driven rotor and the second
- Treatment tool is formed by a stationary stator.
- the device is particularly suitable for dispersing the pulp, the high number of edges, in particular in the tooth gaps, the efficiency of the pulp
- FIG. 1 shows a schematic cross section through a disperser
- Figure 2 a partial cross section through a treatment tool 3.4 in the radial
- FIG. 3 shows a partial cross section through a treatment tool 3, 4 in FIG
- the high-consistency paper pulp 1 is pressed according to Figure 1 directly into the central region of the Dispergergarnitur, which is formed by the two treatment tools 3,4.
- While a treatment tool 3 is stationary and thus designed as a stator, the other treatment tool 4 is rotatably mounted in the housing 2 of the disperser.
- Dispergergarnitur with the stator and the rotor is thus fed radially inward.
- dispersion is effected by having teeth 6 of relatively high Speed are moved relatively close to each other and the fibrous material 1 therebetween is subjected to strong shear forces.
- the pulp 1 can be previously heated by superheated steam. After dispersion, the dispersed pulp 1 falls down through the outlet 15.
- the treatment tools 3,4 each have a rotationally symmetrical shape.
- the coaxially arranged treatment tools 3,4 each have a plurality of annular, concentric to their center rows 5 arranged teeth 6, between which there are tooth gaps 7, which are flowed through by the pulp 1 radially outward.
- annular spaces 8 are provided, which are arranged so that at least one row of teeth 5 of a treatment tool 3,4 in an annular space 8 of the other, complementary
- Treatment Tool 4.3 extends.
- the flow through the tooth gaps 7 is hindered as far as it is conducive to the treatment of the pulp 1 ,
- the angle 17 between the flanks 12 of the teeth 6 and the angle 18 between the flanks 19 of the elevations 9 is the same size.
- the tooth head 13 has a height between 20 and 25 mm above the tooth base 1 first
- the height of the head 21 of the elevations 9 results as a function of the distance 20 between the flanks, the flank angle 18 and the minimum extension of the head 21 in the radial direction 14.
- the width of the teeth 6 and the elevations 9 in the circumferential direction 16 is approximately equal and is between 2 and 5 mm.
- the teeth 6 and / or the elevations 9, as shown in Figure 3 preferably have grooves 10 with a directional component in the radial direction 14.
- These grooves 10 may extend over the entire tooth 6 or the entire elevation 9 or only a part thereof.
- the partial extension for example, exclusively via the head 13,21 or exclusively via a flank 12, 19 done.
Landscapes
- Crushing And Grinding (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14161228.3A EP2757192A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110005273 DE102011005273A1 (de) | 2011-03-09 | 2011-03-09 | Disperger |
PCT/EP2012/053854 WO2012120019A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14161228.3A Division EP2757192A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
EP14161228.3A Division-Into EP2757192A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2683870A1 true EP2683870A1 (de) | 2014-01-15 |
EP2683870B1 EP2683870B1 (de) | 2016-05-18 |
Family
ID=45814499
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14161228.3A Withdrawn EP2757192A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
EP12708125.5A Active EP2683870B1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14161228.3A Withdrawn EP2757192A1 (de) | 2011-03-09 | 2012-03-07 | Disperger |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2757192A1 (de) |
CN (1) | CN103415662B (de) |
DE (1) | DE102011005273A1 (de) |
WO (1) | WO2012120019A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11859344B2 (en) | 2018-10-29 | 2024-01-02 | Andritz Inc. | Supported toothed plates in a disperser with buttress extending from the substrate and between a first face of a tooth |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015212012B4 (de) * | 2015-06-29 | 2017-03-16 | Voith Patent Gmbh | Disperger |
US11208763B2 (en) | 2018-10-29 | 2021-12-28 | Andritz Inc. | Supported toothed plates in a disperser |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19541892C1 (de) * | 1995-11-10 | 1996-11-21 | Voith Sulzer Stoffaufbereitung | Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff |
US6422496B1 (en) * | 2000-06-14 | 2002-07-23 | Voith Sulzer Paper Technology North America, Inc. | Refiner for refining a fiber suspension |
US7172148B2 (en) * | 2004-02-05 | 2007-02-06 | Andritz Inc. | Grooved pyramid disperger plate |
US8342437B2 (en) * | 2009-04-23 | 2013-01-01 | Andritz Inc. | Deflaker plate and methods relating thereto |
DE202009018665U1 (de) * | 2009-12-08 | 2012-08-16 | Voith Patent Gmbh | Disperger III |
-
2011
- 2011-03-09 DE DE201110005273 patent/DE102011005273A1/de not_active Withdrawn
-
2012
- 2012-03-07 EP EP14161228.3A patent/EP2757192A1/de not_active Withdrawn
- 2012-03-07 WO PCT/EP2012/053854 patent/WO2012120019A1/de unknown
- 2012-03-07 CN CN201280012310.4A patent/CN103415662B/zh active Active
- 2012-03-07 EP EP12708125.5A patent/EP2683870B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012120019A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11859344B2 (en) | 2018-10-29 | 2024-01-02 | Andritz Inc. | Supported toothed plates in a disperser with buttress extending from the substrate and between a first face of a tooth |
Also Published As
Publication number | Publication date |
---|---|
CN103415662A (zh) | 2013-11-27 |
EP2757192A1 (de) | 2014-07-23 |
EP2683870B1 (de) | 2016-05-18 |
WO2012120019A1 (de) | 2012-09-13 |
DE102011005273A1 (de) | 2012-09-13 |
CN103415662B (zh) | 2016-08-17 |
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