EP1679403B1 - Pulper for comminuting and suspending papermaking material - Google Patents
Pulper for comminuting and suspending papermaking material Download PDFInfo
- Publication number
- EP1679403B1 EP1679403B1 EP05023603A EP05023603A EP1679403B1 EP 1679403 B1 EP1679403 B1 EP 1679403B1 EP 05023603 A EP05023603 A EP 05023603A EP 05023603 A EP05023603 A EP 05023603A EP 1679403 B1 EP1679403 B1 EP 1679403B1
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- EP
- European Patent Office
- Prior art keywords
- screen
- openings
- pulper
- sieve
- pulper 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.)
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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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/04—Flat screens
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/16—Cylinders and plates for screens
Definitions
- the invention relates to a pulper for comminution and suspension of pulp according to the preamble of claim 1.
- Pulpers of this type are mainly used to suspend dried pulp or waste paper of various composition. 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.
- 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 sorted by coarse impurities and withdrawn as a suspension.
- Such a pulper is eg by the EP-A-1 398 410 known.
- Another open top pulper with a container whose cross-section is not circular shows the FR-A-1 047 321 , Here the sieve is not flat, but conical. It serves to retain the still insufficiently dissolved pulp in the pulper.
- 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.
- a Another typical design is the open top pulper container with laterally inserted rotor. Then the suspension is conveyed approximately horizontally to the rotor and deflected on the side wall of the container carrying the rotor. This hydraulically often less favorable form has the advantage of finding space under the paper machine as broke dissolver.
- An example of a Auschussauflöser shows the DE 101 38 860 A1 ,
- the previously mentioned sieve initially serves to carry out a separation in which the already sufficiently dissolved fractions of the pulp are drawn off through the openings of the sieve and not yet retained sufficiently dissolved.
- the dissolution process becomes more economical in a manner known per se; in particular, the pulper can, if desired, be operated continuously. Contaminants, ie essentially non-paper components, are retained or sorted out.
- EP-A-1 357 222 is a flat screen for performing a Nasssiebungsvons with slot-shaped screen openings known. It is about higher throughput with the same sorting quality. The process is carried out in closed sorters in which a separation of paper and impurities takes place.
- the sieve but also contributes to pulpers of the type mentioned to enhance the dissolution process.
- the side of the rotor facing the screen plate interacts with the inlet edges of the screen openings. Although a certain distance between rotor and screen plate is always respected, the shear forces that occur are sufficient to further separate the pulp particles. Larger pieces can also bridge the distance between screen plate and rotor, so that a direct cutting effect occurs.
- the form and intensity of these processes depends on the requirements and the design of the pulper.
- WO 03/033152 A1 From the WO 03/033152 A1 is known a screen plate whose openings have been introduced by laser or water jet. These openings are not round, but provided with corners and preferably distributed like a mosaic on the screen plate. This should increase the dissolution effect.
- the invention is based on the object to improve the known pulpers for the resolution of pulp so that with them the highest possible throughput of dissolved pulp can be achieved without the cost, especially for equipment and operation, rise. In special embodiments, it should also be possible to reduce the equipment costs or the operating costs.
- the dissolving power of the pulper which results from the interaction of rotor and screen plate, can be increased. Due to the curves, the risk of attaching fiber fins or impurities prone to spinning (plastic films) is very low.
- the elongated shape also means that a larger free screen surface can be produced at approximately the same screen fineness.
- edges which form at the inlet into the screen opening, with respect to the dissolution effect.
- edges can be arranged at a defined angle (cutting angle) to the sweeping past rotor blade edges.
- FIG. 1 the sieve region of a pulper according to the invention is shown. It can be seen a rotor 2, which is arranged concentrically with an annular flat screen plate 1 in the pulper, not otherwise shown.
- the rotor 2 is provided with wings 4 and dimensioned so that it completely or at least for the most part sweeps over the screen surface of the screen 3 during rotation (arrow 7).
- the screen openings 5 of this screen 3 are not circular as usual but elongated.
- the graphic representation of the screen openings 5 is not to scale here, but should only identify the screen surface. More details about these screen openings is shown in further figures. For larger sieves, it is customary to first produce these as ring segments, which are then assembled in the pulper to form an entire sieve.
- the whole sieve consists of a total of eight segments, four of which are drawn.
- the sieve segments are screwed for example with an underlying support frame 8.
- This can - unlike drawn here - be constructed so that it supports the screen even where there are no Siebsegmentgrenzen. Then it is possible to reduce the screen plate thickness and save costs, especially in the production of the screen openings. 5
- FIG. 2 shows a possible embodiment of the screen plate a little more detail.
- 5 slots are selected for the screen openings with the length L and the width B, wherein the curves are semicircular.
- the length / width ratio UB here is about 4.
- a length / width ratio of less than 2 for example, 1.7 conceivable.
- screen openings having a width B between 10 and 20 mm and length L between 20 and 60 mm are to be regarded as a typical embodiment.
- much smaller screen openings eg with a width B of about 4 mm are provided.
- Another object of the invention is the adjustment of the optimum cutting angle ⁇ , the between the leading edge 10 of the Rotorflüsgels 4 and the opening edge. 9 the screen openings is formed.
- This intersection angle ⁇ is in Fig. 2 with 8 ° relatively small, which leads to a strong dissolving effect.
- the angles may also be different, eg changing depending on the distance to the center of the screen.
- slot shapes and their arrangement are typical examples of practicing the invention, they are not the only ones. Thus, e.g. also other oval / oblong shapes are chosen.
- the sieve (according to FIG. 6 In general, then the support plate 12 has the same outer contour as the screen plate 11.
- the passage openings 13 of the support plate 12 may be uneven and substantially larger than the screen openings 5, since they have no screening effect. Because of the support plate 12, the screen plate 11 can be kept relatively thin, which greatly simplifies the introduction of openings.
- pulper to which the invention can be applied is the standing cylindrical open-top pulper according to FIG. 7 in which sieve 3 and rotor 2 are located in the bottom area.
- stock S and water W are introduced into the container 1.
- the finished pumpable suspension is withdrawn through the sieve 3 as accept A.
- pulpers have long been known.
- the same applies to pulpers with side mounted rotors according to FIG. 8 As already mentioned, such a lying container 1 'particularly advantageous under a Paper machine to be used for the dissolution of production committee.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Disintegrating Or Milling (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Die Erfindung betrifft einen Stofflöser zur Zerkleinerung und Suspendierung von Papierstoff gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a pulper for comminution and suspension of pulp according to the preamble of claim 1.
Stofflöser dieser Art werden hauptsächlich angewendet, um getrocknetes Zellstoffmaterial oder Altpapier der unterschiedlichsten Zusammensetzung in Suspension zu bringen. Sie bestehen im Wesentlichen aus einem Behälter für die Suspension und mindestens einem Rotor. Das eingetragene Material wird in großen Stücken, Bahnen oder gepressten Ballen mit Wasser intensiv vermischt, wobei durch den Rotor ein hydraulischer Stoffumtrieb erzeugt wird. Verständlicherweise werden solche Vorrichtungen optimiert, wobei im Wesentlichen eine schnelle und kraftwirtschaftliche Auflösung angestrebt wird. In vielen Fällen wird der Rotor in unmittelbarer Nähe eines ebenen Siebes angeordnet, das er frei von Verstopfungen hält. Durch die Öffnungen des Siebes wird der aufgelöste Stoff von groben Verunreinigungen sortiert und als Suspension abgezogen. Ein solcher Stofflöser ist z.B. durch die
Als Standardtyp für einen Stofflöser hat sich ein senkrecht stehender zylindrischer Behälter mit einem Rotor im Bodenbereich durchgesetzt. In diesen Behälter wird Wasser und der aufzulösende Stoff von oben zugegeben und mit Hilfe des Rotors eine Trombenströmung in der Suspension erzeugt, bei der also im inneren Bereich der Stoff vom Rotor nach unten gezogen und im Bodenbereich radial nach außen gedrückt wird, wodurch sich eine Umtriebsströmung ergibt. Eine weitere typische Bauart ist der oben offene Stofflöser-Behälter mit seitlich eingesetztem Rotor. Dann wird die Suspension etwa waagerecht zum Rotor gefördert und an der den Rotor tragenden Seitenwand des Behälters umgelenkt. Diese hydraulisch oft weniger günstige Form hat den Vorteil, unter der Papiermaschine als Ausschussauflöser Platz zu finden. Ein Beispiel für einen Auschussauflöser zeigt die
Das bereits erwähnte Sieb dient zunächst dazu, eine Trennung vorzunehmen, bei der die bereits genügend aufgelösten Anteile des Papierstoffes durch die Öffnungen des Siebes hindurch abgezogen und noch nicht genügend Aufgelöstes zurückgehalten wird. Dadurch wird in an sich bekannter Weise der Auflöseprozess ökonomischer, insbesondere kann der Stofflöser, wenn gewünscht, kontinuierlich betrieben werden. Störstoffe, also im Wesentlichen papierfremde Bestandteile, werden zurückgehalten bzw. aussortiert.The previously mentioned sieve initially serves to carry out a separation in which the already sufficiently dissolved fractions of the pulp are drawn off through the openings of the sieve and not yet retained sufficiently dissolved. As a result, the dissolution process becomes more economical in a manner known per se; in particular, the pulper can, if desired, be operated continuously. Contaminants, ie essentially non-paper components, are retained or sorted out.
Aus der
Das Sieb trägt aber bei Stofflösern der genannten Art auch dazu bei, den Auflösevorgang zu verstärken. Die dem Siebblech zugewandte Seite des Rotors tritt nämlich mit den Einlaufkanten der Sieböffnungen in Wechselwirkung. Zwar wird immer ein gewisser Abstand zwischen Rotor und Siebblech eingehalten, doch genügen die dabei auftretenden Scherkräfte, die Papierstoffteilchen weiter zu zerlegen. Größere Stücke können auch den Abstand zwischen Siebblech und Rotor überbrücken, so dass eine direkte Schnittwirkung eintritt. In welcher Form und in welcher Intensität diese Vorgänge stattfinden, hängt von den Anforderungen und der Auslegung des Stofflösers ab.The sieve but also contributes to pulpers of the type mentioned to enhance the dissolution process. The side of the rotor facing the screen plate interacts with the inlet edges of the screen openings. Although a certain distance between rotor and screen plate is always respected, the shear forces that occur are sufficient to further separate the pulp particles. Larger pieces can also bridge the distance between screen plate and rotor, so that a direct cutting effect occurs. The form and intensity of these processes depends on the requirements and the design of the pulper.
Es ist auch bekannt, die soeben beschriebene Auflösewirkung dadurch weiter zu verstärken, dass die Siebbleche an der Einlaufseite mit Leisten versehen werden, wie es z.B. aus der
Aus der
Die bekannten Siebe für solche Stofflöser werden zumeist mit kreisrunden Bohrungen versehen, wobei ein Kompromiss gefunden werden muss zwischen der Forderung nach optimaler Klassierung, also möglichst kleinen Sortieröffenungen, und der Forderung nach möglichst hohem Durchsatz, also möglichst großer offener Fläche.The known sieves for such pulpers are usually provided with circular holes, a compromise must be found between the demand for optimum classification, ie the smallest possible Sortieröffenungen, and the demand for the highest possible throughput, so the largest possible open area.
Der Erfindung liegt die Aufgabe zu Grunde, die bekannten Stofflöser für die Auflösung von Papierstoff so zu verbessern, dass mit ihnen ein möglichst großer Durchsatz von aufgelöstem Papierstoff zu erzielen ist, ohne dass die Kosten, insbesondere für Apparatur und Betrieb, steigen. In speziellen Ausführungsformen soll auch eine Senkung der apparativen Kosten oder der Betriebskosten möglich sein.The invention is based on the object to improve the known pulpers for the resolution of pulp so that with them the highest possible throughput of dissolved pulp can be achieved without the cost, especially for equipment and operation, rise. In special embodiments, it should also be possible to reduce the equipment costs or the operating costs.
Diese Aufgabe wird an einem Stofflöser gemäß Anspruch 1 mit den im Kennzeichen dieses Anspruchs genannten Merkmalen gelöst.This object is achieved on a pulper according to claim 1 with the features mentioned in the characterizing part of this claim.
Dadurch, dass das Siebblech im Stofflöser speziell mit länglich runden Öffnungen, z.B. Langlöchern oder ovalen Öffnungen versehen ist, kann die Auflöseleistung des Stofflösers, die von dem Zusammenwirken von Rotor und Siebblech herrührt, gesteigert werden. Auf Grund der Rundungen ist die Gefahr des Anhängens von Faserstippen oder von zum Verspinnen neigenden Störstoffen (Kunststofffolien) sehr gering. Die längliche Form führt auch dazu, dass bei etwa gleicher Siebfeinheit eine größere freie Siebfläche erzeugt werden kann.Characterized in that the screen plate in the pulper especially with elongated round openings, e.g. Long holes or oval openings is provided, the dissolving power of the pulper, which results from the interaction of rotor and screen plate, can be increased. Due to the curves, the risk of attaching fiber fins or impurities prone to spinning (plastic films) is very low. The elongated shape also means that a larger free screen surface can be produced at approximately the same screen fineness.
Es ist auch möglich, durch entsprechende Anordnung der Sieböffnungen, auf die noch näher eingegangen wird, die Kanten, die sich am Einlauf in die Sieböffnung bilden, bezüglich der Auflösewirkung zu optimieren. Dazu können diese Kanten in einem definierten Winkel (Schnittwinkel) zu den vorbei streichenden Rotorflügelkanten angeordnet werden.It is also possible, by appropriate arrangement of the screen openings, which will be discussed in more detail, to optimize the edges, which form at the inlet into the screen opening, with respect to the dissolution effect. These edges can be arranged at a defined angle (cutting angle) to the sweeping past rotor blade edges.
In vielen Fällen ist es möglich, auch dann einen guten Betrieb des Stofflösers zu gewährleisten, wenn das Sieb ohne aufgesetzte Leisten ist, d.h. dass dann auf die Installation von zusätzlichen Leisten verzichtet werden kann.In many cases, it is possible to ensure a good operation of the pulper even if the sieve is without attached strips, ie that then can be dispensed with the installation of additional strips.
Die Erfindung wird erläutert an Hand von Zeichnungen. Dabei zeigen:
- Figur 1:
- Den Siebbereich eines erfindungsgemäßen Stofflösers;
- Figur 2:
- Erfindungsgemäß ausgestaltete Sieböffnungen im Detail;
- Figur 3:
- Vorteilhafte Anordnung von langlochförmigen Sieböffnungen;
Figur 4 + 5:- Je eine weitere mögliche Anordnung von langlochförmigen Sieböffnungen;
- Figur 6:
- Sieb, das eine Stützplatte aufweist;
- Figur 7:
- einen Stofflöser in Seitenansicht;
- Figur 8:
- einen anderen Stofflöser in Ansicht von oben.
- FIG. 1:
- The sieving area of a pulper according to the invention;
- FIG. 2:
- In accordance with the invention configured screen openings in detail;
- FIG. 3:
- Advantageous arrangement of slot-shaped screen openings;
- Figure 4 + 5:
- Depending on another possible arrangement of slot-shaped sieve openings;
- FIG. 6:
- Sieve having a support plate;
- FIG. 7:
- a pulper in side view;
- FIG. 8:
- another pulper in top view.
In
Die
An den Öffnungskanten 9 werden im Zusammenwirken mit den an ihnen dicht vorbei bewegten Rotorflügeln 4 auflösewirksame Kräfte auf die Suspension, insbesondere den Papierstoff übertragen. Anders als kreisförmige Sieböffnungen haben längliche Sieböffnungen bei diesem Zusammenwirken mit dem Rotorflügel 4 eine stärkere Auflösewirkung. Zusätzlich bieten sie eine wichtige Möglichkeit zur Beeinflussung des Auflöseeffektes. Dabei spielt insbesondere die Ausrichtung der länglichen Sieböffnung 5 relativ zum durch das Zentrum des Siebes verlaufenden Radius 6 eine wesentliche Rolle. Bei dem hier gezeigten Beispiel nimmt dieser Winkel α einen Wert von - 5° ein. Wenn er relativ klein gewählt wird, ist eine stärkere Auflösewirkung zu erwarten, da die Kante 9 steil (senkrecht oder nahezu senkrecht) angeströmt wird. Bezüglich dieses Merkmals können auch andere Formen sinnvoll sein, z.B. wie
Ein weiteres Ziel der Erfindung ist die Einstellung des optimalen Schnittwinkels β, der zwischen der Vorderkante 10 des Rotorflüsgels 4 und der Öffnungskante 9 der Sieböffnungen gebildet wird. Dieser Schnittwinkel β ist in
Gemäß den
Die bisher erläuterten Langlochformen und ihre Anordnung sind zwar typische Beispiele zur Ausführung der Erfindung, aber nicht die einzigen. So können z.B. auch andere oval/längliche Formen gewählt werden.Although the previously discussed slot shapes and their arrangement are typical examples of practicing the invention, they are not the only ones. Thus, e.g. also other oval / oblong shapes are chosen.
Um die Herstellkosten für die Sieböffnungen zu senken, kann das Sieb (gemäß
Die häufigste Form eines Stofflösers, auf den die Erfindung angewendet werden kann, ist der stehende zylindrische oben offene Stofflöser gemäß
Claims (14)
- Pulper for comminuting and suspending papermaking material (S), having a container (1, 1') open at the top and having at least one rotor (2) which is arranged in the container (1, 1'), can be driven and has means for circulating a suspension contained in the container, in order in the process to comminute the papermaking material put in and to suspend it in water, and also having at least one screen (3), of which the screen area provided with screen openings is swept over, for the major part or completely, by the moving rotor (2),
characterized in that
the screen (3) is provided with elongated round screen openings (5, 5', 5"), the shape of which deviates from that of a circle. - Pulper according to Claim 1, characterized in that the screen openings (5) are oval, in particular elliptical.
- Pulper according to Claim 1, characterized in that the screen openings (5') are slots.
- Pulper according to one of the preceding claims, characterized in that the screen is annular and flat and in that, with respect to the radius (6) running through the centre of the screen, the length (L) of the screen openings (5, 5', 5") assumes an angle (α) which lies between -80° and +80°, preferably between -45° and + 45°.
- Pulper according to one of the preceding claims, characterized in that, relative to the length (L) of the screen openings (5, 5', 5"), the leading edge (10) of the rotor blade (4) runs at an angle of intersection (β) between -80° and +80°, preferably -45° and + 45°.
- Pulper according to one of the preceding claims, characterized in that the screen openings (5, 5', 5") have a length to width ratio of at least 1.5, preferably at least 3.
- Pulper according to one of the preceding claims, characterized in that the maximum width (B) of the screen openings (5, 5') lies between 4 and 20 mm.
- Pulper according to one of the preceding claims, characterized in that the length (L) of the screen openings (5, 5', 5") lies between 10 and 100 mm.
- Pulper according to one of the preceding claims, characterized in that the pulper has a rotor fitted at the side and is suitable for pulping papermachine broke.
- Pulper according to one of the preceding claims, characterized in that the screen openings (5, 5', 5") are produced by milling.
- Pulper according to one of Claims 1 to 9, characterized in that the screen openings (5, 5', 5") are produced by punching.
- Pulper according to one of Claims 1 to 9, characterized in that the screen openings (5, 5', 5") are produced by a laser beam.
- Pulper according to one of Claims 1 to 9, characterized in that the screen (3), together with the screen openings (5, 5', 5"), is produced in the steel casting process.
- Pulper according to one of the preceding claims, characterized in that the screen comprises a screen plate (11) containing the screen openings (5, 5', 5") and a supporting plate (12), the supporting plate (12) being a frame or coarse screen structure, the outer contour of which corresponds substantially to that of the screen plate (11) and which is provided with passage openings (13) which are larger than the screen openings (5' 5', 5'').
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200520000332 DE202005000332U1 (en) | 2005-01-11 | 2005-01-11 | Pulper for crushing and suspending pulp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1679403A1 EP1679403A1 (en) | 2006-07-12 |
EP1679403B1 true EP1679403B1 (en) | 2008-03-05 |
Family
ID=34353846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05023603A Active EP1679403B1 (en) | 2005-01-11 | 2005-10-28 | Pulper for comminuting and suspending papermaking material |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1679403B1 (en) |
AT (1) | ATE388266T1 (en) |
DE (2) | DE202005000332U1 (en) |
ES (1) | ES2300923T3 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0909854A2 (en) * | 2008-08-11 | 2015-12-08 | Voith Patent Gmbh | "fractional arrangement" |
DE102009045613A1 (en) * | 2009-10-13 | 2011-04-21 | Voith Patent Gmbh | pulper |
CN103119217B (en) * | 2010-09-17 | 2016-03-30 | 汉斯-乔基姆·鲍尔特斯多夫 | Comprise the pulper of sieve plate |
CH708421A8 (en) | 2013-02-28 | 2015-05-15 | Dissolvetech Ag | Disk destruction method, collection vehicle and use of a dissolution device. |
DE202016008505U1 (en) | 2016-02-19 | 2018-03-13 | Voith Patent Gmbh | pulper |
CN107476108A (en) * | 2017-09-30 | 2017-12-15 | 枣庄市恒宇纸业有限公司 | A kind of paper grade (stock) Novel grading screen |
DE102018109634A1 (en) * | 2018-04-23 | 2019-10-24 | Voith Patent Gmbh | pulper |
CN108625213B (en) * | 2018-05-29 | 2020-10-30 | 新昌县康泓机械科技有限公司 | Papermaking beating machine |
FI20185942A (en) * | 2018-11-06 | 2020-05-07 | Valmet Technologies Oy | Screen plate, pulper, process and method for manufacturing fibre mass suspension |
CN113680116A (en) * | 2021-09-01 | 2021-11-23 | 安德里茨(中国)有限公司 | Sieve plate and pulp screen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1047321A (en) * | 1951-12-28 | 1953-12-14 | Apparatus for the disintegration of celluloses and waste paper | |
DE10138860A1 (en) * | 2001-08-08 | 2003-02-27 | Voith Paper Patent Gmbh | Process for guiding the suspension in a paper pulper as well as pulp solver for carrying out the process |
DE10217926A1 (en) * | 2002-04-23 | 2003-11-13 | Voith Paper Patent Gmbh | Process for wet screening of fiber suspensions |
FR2844532B1 (en) * | 2002-09-12 | 2004-11-05 | Kadant Lamort | PAPER DESINTEGRATER |
-
2005
- 2005-01-11 DE DE200520000332 patent/DE202005000332U1/en not_active Expired - Lifetime
- 2005-10-28 AT AT05023603T patent/ATE388266T1/en not_active IP Right Cessation
- 2005-10-28 DE DE502005003085T patent/DE502005003085D1/en not_active Expired - Fee Related
- 2005-10-28 EP EP05023603A patent/EP1679403B1/en active Active
- 2005-10-28 ES ES05023603T patent/ES2300923T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE202005000332U1 (en) | 2005-03-17 |
EP1679403A1 (en) | 2006-07-12 |
DE502005003085D1 (en) | 2008-04-17 |
ES2300923T3 (en) | 2008-06-16 |
ATE388266T1 (en) | 2008-03-15 |
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