EP1731663B1 - Pulper for disintegration and suspension of paper pulp - Google Patents
Pulper for disintegration and suspension of paper pulp Download PDFInfo
- Publication number
- EP1731663B1 EP1731663B1 EP06007357A EP06007357A EP1731663B1 EP 1731663 B1 EP1731663 B1 EP 1731663B1 EP 06007357 A EP06007357 A EP 06007357A EP 06007357 A EP06007357 A EP 06007357A EP 1731663 B1 EP1731663 B1 EP 1731663B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- rotor
- pulper
- pulper according
- suspension
- 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.)
- Not-in-force
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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 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 air-dry pulp or waste paper.
- the registered material is intensively mixed in large pieces, webs or pressed bales with water, which is usually a mixing and crushing rotor is used.
- a pulper consists essentially of a container for the suspension and the already mentioned rotor. In many cases, it also contains a sieve in the bottom area, through which the suspension can be pumped.
- the standard type for a pulper is a vertical cylindrical container with a rotor in the bottom area.
- water and the material to be dissolved is added from above and generated with the help of the rotor Trombenströmung in the suspension, ie in the central region of the fabric is sucked down from the rotor and pressed radially outward in the bottom region, resulting in a Umtriebsströmung results.
- the invention is based on the object to improve the known pulper without significant overhead, in particular, the collection of the material to be improved.
- the pulper should be able to dissolve faster and / or more economically.
- the cut in side view drawn pulper the Fig. 1 is a typical form of the invention.
- the pulp S is entered into a container 1 together with water W.
- a mixture of water and pulp which is already partially crushed. This thus provided with coarse and fine solids suspension is displaced by the arranged in the bottom region of the container 1 rotor 2 in drive.
- the rotor is driven by a motor, not shown.
- Essential for this pulper according to the invention is that the center line 3 of the rotor 2 is arranged laterally offset relative to the center line 4 of the container 1.
- the eccentricity E of this offset is preferably in a cylindrical container 1 as large as half its diameter D1 with a tolerance of ⁇ 30%.
- the eccentric rotor assembly unfolds its beneficial effect, especially when the bottom 7 of the container 1 - outside the screen area - has a pronounced slope.
- This bottom angle ⁇ thus depicted is preferably between 15 ° and 60 °. At about 30 ° is in terms of effect, container volume, construction costs and space requirements before a particularly favorable design.
- a vertical flow barrier 8 which may be formed in a simple embodiment as a rectangular angle profile extending perpendicularly from the bottom 7 of the container 1 to above the forming during operation of the suspension mirror extends.
- This flow barrier 8 extends into the trough with a radial projection F which is at least 5%, preferably at least 10%, of the diameter D1 of the container 1.
- Fig. 2 the pulper of Fig. 1 in top view.
- the holes of the screen plate 6 are not shown.
- An inventive pulper may, for example, be provided with the following dimensions.
- the eccentricity E is at a quarter of the diameter D1, ie about 609 mm.
- the rotor 2 has on its moving wings an outer diameter D2 of 970 mm. He runs close to a flat annular sieve 6, the openings of which he keeps clear of blockages.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Crushing And Grinding (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Pulverization Processes (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 lufttrockenes Zellstoffmaterial oder Altpapier in Suspension zu bringen. Das eingetragene Material wird in großen Stücken, Bahnen oder gepressten Ballen mit Wasser intensiv vermischt, wozu in der Regel ein Misch- und Zerkleinerungsrotor eingesetzt wird. Ein Stofflöser besteht im Wesentlichen aus einem Behälter für die Suspension und dem schon genannten Rotor. In vielen Fällen enthält er auch ein Sieb im Bodenbereich, durch das die Suspension abgepumpt werden kann.Pulpers of this type are mainly used to suspend air-dry pulp or waste paper. The registered material is intensively mixed in large pieces, webs or pressed bales with water, which is usually a mixing and crushing rotor is used. A pulper consists essentially of a container for the suspension and the already mentioned rotor. In many cases, it also contains a sieve in the bottom area, through which the suspension can be pumped.
Verständlicherweise werden solche Stofflöser ständig optimiert, wobei im Wesentlichen eine schnelle und kraftwirtschaftliche Auflösung angestrebt wird. Als Standardtyp für einen Stofflöser hat sich ein senkrecht stehender zylindrischer Behälter mit einem Rotor im Bodenbereich durchgesetzt. In diesem 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 zentralen Bereich der Stoff vom Rotor nach unten angesaugt und im Bodenbereich radial nach außen gedrückt wird, wodurch sich eine Umtriebsströmung ergibt. Es sind auch Strömungsmaßnahmen bekannt, um diese Umtriebsströmung zu steuern. So wird z.B. durch entsprechende Strömungseinbauten (Schikanen) an der Behälterwand die Umfangsströmung gebremst, da diese nur einen geringen Beitrag zur Auflösung bringt. Die Förderung des eigentlichen Umtriebs, d.h. der wiederholte Transport des aufzulösenden Stoffes in den Rotorbereich bringt dagegen eine Verbesserung des Effektes. Auch wird angestrebt, den frisch eingetragenen Stoff möglichst schnell in die Suspension einzuziehen. Aus diesen Gründen ist auch schon viel Entwicklung an den Rotoren und Behältern der Stofflöser betrieben worden.Understandably, such pulpers are constantly being optimized, with the aim of achieving a fast and efficient dissolution. The standard type for a pulper is a vertical cylindrical container with a rotor in the bottom area. In this container, water and the material to be dissolved is added from above and generated with the help of the rotor Trombenströmung in the suspension, ie in the central region of the fabric is sucked down from the rotor and pressed radially outward in the bottom region, resulting in a Umtriebsströmung results. There are also flow measures known to control this Umtriebsströmung. For example, by appropriate flow installations (baffles) on the vessel wall, the circumferential flow is slowed down, as this brings only a small contribution to the resolution. The promotion of the actual Umtriebs, ie the repeated transport of the substance to be dissolved in the rotor area, however, brings an improvement in the effect. It is also desirable to collect the freshly introduced substance as quickly as possible in the suspension. From these Reasons a lot of development has been done on the rotors and containers of pulpers.
In der
Einen anderen Versuch, Stofflöser dieser Art zu verbessern, zeigt die
In der
Zur Verbesserung des Umtriebes sind auch schon unkonventionelle Wege beschritten worden, wie z.B. gemäß
Der Erfindung liegt die Aufgabe zu Grunde, die bekannten Stofflöser ohne wesentlichen Mehraufwand zu verbessern, wobei insbesondere der Einzug des Materials verbessert werden soll. Der Stofflöser soll schneller und/oder wirtschaftlicher auflösen können.The invention is based on the object to improve the known pulper without significant overhead, in particular, the collection of the material to be improved. The pulper should be able to dissolve faster and / or more economically.
Diese Aufgabe wird an einem im Oberbegriff des Anspruchs 1 beschriebenen Stofflöser durch die im Kennzeichen genannten Maßnahmen gelöst.This object is achieved on a pulper described in the preamble of claim 1 by the measures mentioned in the plate.
Es hat sich nämlich gezeigt, dass durch die besondere Form des Behälters ein schnellerer Einzug des eingetragenen Papierstoffes und eine Verbesserung des Umtriebes möglich ist. Der gesamte Auflösevorgang läuft schneller ab, was eine bessere Maschinennutzung sowie eine Energieersparnis bewirkt. Der verbesserte Auflöseeffekt lässt sich durch die schnellere Abnahme des Stippengehaltes in der Fasersuspension feststellen.It has been shown that a faster collection of the registered pulp and an improvement of the rotation is possible by the special shape of the container. The entire dissolution process is faster, resulting in better machine utilization and energy savings. The improved Dissolution effect can be determined by the faster decrease of the speck content in the fiber suspension.
Die Erfindung wird erläutert an Hand von Zeichnungen. Dabei zeigen:
- Figur 1:
- Schematisch einen Schnitt durch einen erfindungsgemäßen Stofflöser, Seitenansicht;
- Figur 2:
- Stofflöser der
Fig. 1 , Ansicht von oben.
- FIG. 1:
- Schematically a section through a pulper according to the invention, side view;
- FIG. 2:
- Pulper the
Fig. 1 , View from above.
Der geschnitten in Seitenansicht gezeichnete Stofflöser der
Die Suspension wird vom Rotor 2 nach unten gezogen, wodurch etwa längs der Mittellinie 3 des Rotors 2 eine abwärts gerichtete Strömung entsteht. In Folge der Pumpwirkung des Rotors wird die Suspension am Boden des Behälters 1 radial nach außen gefördert und gelangt dadurch zu dessen Seitenwand 5. Insgesamt entsteht dadurch eine Zirkulationsströmung. Wie an sich bekannt, wird bei diesem beschriebenen Auflösevorgang durch hydraulische Kräfte und durch Kontakt zwischen Rotor 2 und Papierstoff die Zerkleinerung und Suspendierung des Papierstoffs bewirkt. Papierstoffteile, die genügend zerkleinert sind, können - wie hier gezeigt - durch ein Siebblech 6 hindurch in eine Kammer 9 gelangen und als faserstoffhaltige Suspension P abgeführt werden. Ein solcher Stofflöser kann sowohl kontinuierlich als auch diskontinuierlich betrieben werden. Das Siebblech 6 ist nicht unbedingt erforderlich. Der übliche Feststoffanteil in der Suspension P beträgt in der Regel um die 3 bis 6 %, ist aber nicht darauf beschränkt.The suspension is pulled down by the rotor 2, whereby approximately along the
Die exzentrische Rotoranordnung entfaltet ihre günstige Wirkung besonders dann, wenn der Boden 7 des Behälters 1 - außerhalb des Siebbereiches - eine ausgeprägte Schräge aufweist. Dieser so abgebildete Bodenwinkel α ist vorzugsweise zwischen 15° und 60°. Bei ca. 30° liegt hinsichtlich Wirkung, Behältervolumen, Bauaufwand und Platzbedarf eine besonders günstige Ausführung vor.The eccentric rotor assembly unfolds its beneficial effect, especially when the
An der dem Rotor 2 gegenüber liegenden Innenseite der Seitenwand 5 des Behälters 1 befindet sich eine vertikale Strömungsbarriere 8, die in einer einfachen Ausführung als rechtwinkeliges Winkelprofil ausgebildet sein kann, das sich senkrecht vom Boden 7 des Behälters 1 bis über den sich im Betrieb ausbildenden Suspensionsspiegel erstreckt. Diese Strömungsbarriere 8 reicht mit einem Radialvorsprung F in den Trog hinein, der mindestens 5 %, vorzugsweise mindestens 10 %, des Durchmessers D1 des Behälters 1 beträgt.At the rotor 2 opposite inner side of the
Zur Veranschaulichung zeigt die
Ein erfindungsgemäßer Stofflöser kann z.B. mit folgenden Maßen versehen sein. Der Behälter 1 dieses Stofflösers hat eine Gesamthöhe H von 2000 mm und eine zylindrische Seitenwand 5, deren Durchmesser D1 = 2435 mm beträgt. Die Exzentritzität E liegt bei einem Viertel des Durchmessers D1, also ca. 609 mm. Der Rotor 2 hat an seinen bewegten Flügeln einen Außendurchmesser D2 von 970 mm. Er läuft dicht über einem ebenen kreisringförmigen Sieb 6, dessen Öffnungen er von Verstopfungen frei hält. Der Boden 7 des Stofflösers ist mit einem Bodenwinkel α = 30° schräg gestellt, mit Ausnahme des horizontalen Siebbereiches. Auf der von der Mittellinie des Rotors 2 am meisten entfernten Seite der Seitenwand 5 ist eine Strömungsbarriere 8 angebracht, und zwar in Form eines rechtwinkeligen Winkelprofils, das sich vom Boden 7 bis etwa zum oberen Rand des Behälters 1 senkrecht erstreckt und mit einem Radialvorsprung F = 400 mm in den Behälter hineinragt. Auch wenn dieses Beispiel sich als besonders günstige Ausführungsform erwiesen hat, sind auch andere Fälle, insbesondere größere Stofflöser, vorstellbar, mit denen sich die Erfindung mindestens ebenso gut realisieren lässt.An inventive pulper may, for example, be provided with the following dimensions. The container 1 of this pulper has an overall height H of 2000 mm and a
Claims (13)
- Pulper for comminuting and suspending paper stock (S), having a container (1) open at the top, in which the paper stock (S) can be mixed with water (W), comminuted and suspended, so that a suspension (P) containing paper stock is formed, there being at the bottom (7) of the container (1) a driven rotor (2) for producing a circulating flow in the container (1), and
the centre of the rotor (2) being arranged eccentrically with respect to the centre of the container (1),
characterized in that, starting from the region of the rotor (2), the bottom (7) rises towards the side wall (5) with a bottom angle (α) lying between 15° and 60°, preferably between 25° and 35°. - Pulper according to Claim 1,
characterized in that
the centre line (3) of the rotor (2) is vertical. - Pulper according to Claim 1 or 2,
characterized in that
the container (1) has a substantially cylindrical side wall (5), the centre line (4) of which is vertical. - Pulper according to one of Claim 3,
characterized in that
at least one vertical flow barrier (8) is used on the side wall (5) of the container (1). - Pulper according to Claim 4,
characterized in that
the flow barrier (8) reaches into the container (1) with a radial projection (F) that is at least 10%, preferably at least 20% of the diameter (D1) of the container (1). - Pulper according to Claim 4 or 5,
characterized in that
the flow barrier (8) is located in the 180° sector of the container (1) which is furthest removed from the rotor. - Pulper according to Claim 6,
characterized in that
a flow barrier (8) is located at the point of the container (1) which is furthest removed from the rotor. - Pulper according to Claim 5, 6 or 7,
characterized in that
there is only one flow barrier (8) with these dimensions of the radial projection (F). - Pulper according to Claim 5, 6 or 7,
characterized in that
there are exactly two flow barriers (8) with these dimensions of the radial projection (F). - Pulper according to Claim 4, 5, 6, 7, 8 or 9,
characterized in that
the flow barriers (8) are composed of a vertically angled profile, the limbs of which are joined to the side wall (5). - Pulper according to one of the preceding claims,
characterized in that
in the bottom (7) of the container (1) there is a flat, annular screen (6) arranged horizontally and concentrically with the rotor (2), there being underneath the screen (6) a chamber (9) to hold and lead away the suspension (P) formed in the container (1). - Pulper according to one of the preceding claims,
characterized in that
the diameter (D2) of the rotor (2) is between 20 and 40% of the diameter (D1) of the container (1). - Pulper according to one of the preceding claims,
characterized in that
the ratio between overall height (H) and diameter (D) of the container (1) is between 0.8 and 1.2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005026108A DE102005026108A1 (en) | 2005-06-07 | 2005-06-07 | Pulper for crushing and suspending pulp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1731663A1 EP1731663A1 (en) | 2006-12-13 |
EP1731663B1 true EP1731663B1 (en) | 2010-03-03 |
Family
ID=36975284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06007357A Not-in-force EP1731663B1 (en) | 2005-06-07 | 2006-04-07 | Pulper for disintegration and suspension of paper pulp |
Country Status (6)
Country | Link |
---|---|
US (1) | US8028941B2 (en) |
EP (1) | EP1731663B1 (en) |
JP (1) | JP4868508B2 (en) |
AT (1) | ATE459748T1 (en) |
DE (2) | DE102005026108A1 (en) |
ES (1) | ES2342308T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006000514A1 (en) * | 2006-12-12 | 2008-06-19 | Voith Patent Gmbh | Pulper for comminution and suspension of pulp and its use |
DE202008000684U1 (en) | 2008-01-17 | 2009-05-20 | Voith Patent Gmbh | Pulper for crushing and suspending pulp |
DE102009019664A1 (en) * | 2009-04-30 | 2010-11-04 | Voith Patent Gmbh | Process for treating a pulp suspension and screening device for its implementation |
DE102009035247A1 (en) | 2009-07-29 | 2011-02-03 | Biotec Sistemi S.R.L. | Pulper with torque motor |
JP5566328B2 (en) * | 2011-04-20 | 2014-08-06 | キユーピー株式会社 | Stirring tank |
CH708421A8 (en) | 2013-02-28 | 2015-05-15 | Dissolvetech Ag | Disk destruction method, collection vehicle and use of a dissolution device. |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE844116C (en) * | 1947-12-08 | 1952-07-17 | Leje & Thurne Aktiebolag | Shredding machine for the treatment of cellulose and / or waste paper |
US2557174A (en) * | 1949-01-26 | 1951-06-19 | Cowles Co | Apparatus for pulping paper stock |
US3043526A (en) * | 1958-08-29 | 1962-07-10 | Bolton John W & Sons Inc | Apparatus for pulping paper stock |
DE2707420A1 (en) * | 1977-02-21 | 1978-08-24 | Sprenger Albin Kg | Weather balloon modulated information transmission - uses temp. pressure, and humidity information relayed as single PCM signal and uses ground station with simple digital demodulator |
DE3127114C2 (en) * | 1980-07-10 | 1985-06-13 | J.M. Voith Gmbh, 7920 Heidenheim | Device for dissolving waste paper and sorting out fibers to be recovered from it for the production of paper, cardboard or cardboard |
DE3224705C2 (en) * | 1982-07-02 | 1985-05-02 | J.M. Voith Gmbh, 7920 Heidenheim | Process and vortex flow apparatus for processing waste paper |
DE3234702A1 (en) | 1982-09-18 | 1984-03-22 | Bbc Brown Boveri & Cie | Method for precharging the commutating capacitors in an invertor with interphase commutation |
DE3429514A1 (en) | 1984-08-10 | 1986-02-13 | J.M. Voith Gmbh, 7920 Heidenheim | Pulper |
FI72356C (en) | 1985-12-31 | 1987-05-11 | Yhtyneet Paperitehtaat Oy | Device for destruction of paper and cardboard. |
GB2219755B (en) * | 1988-06-16 | 1992-04-22 | Vernon & Company | Macerator |
FI82492C (en) * | 1989-08-21 | 1991-03-11 | Tampella Oy Ab | FOERFARANDE OCH ANORDNING FOER AVLAEGSNANDE AV FOERORENINGAR FRAON PAPPERSMASSA I PULPER. |
DE19701129A1 (en) * | 1996-01-17 | 1997-07-24 | Voith Sulzer Stoffaufbereitung | Breaking-up paper pulp, useful for paper or cardboard manufacture |
DE10138861A1 (en) * | 2001-08-08 | 2003-02-27 | Voith Paper Patent Gmbh | Paper pulper |
-
2005
- 2005-06-07 DE DE102005026108A patent/DE102005026108A1/en not_active Withdrawn
-
2006
- 2006-04-07 AT AT06007357T patent/ATE459748T1/en active
- 2006-04-07 EP EP06007357A patent/EP1731663B1/en not_active Not-in-force
- 2006-04-07 ES ES06007357T patent/ES2342308T3/en active Active
- 2006-04-07 DE DE502006006305T patent/DE502006006305D1/en active Active
- 2006-06-05 US US11/422,194 patent/US8028941B2/en not_active Expired - Fee Related
- 2006-06-07 JP JP2006158969A patent/JP4868508B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE502006006305D1 (en) | 2010-04-15 |
JP4868508B2 (en) | 2012-02-01 |
US8028941B2 (en) | 2011-10-04 |
ATE459748T1 (en) | 2010-03-15 |
DE102005026108A1 (en) | 2006-12-14 |
JP2006342483A (en) | 2006-12-21 |
ES2342308T3 (en) | 2010-07-05 |
US20060273208A1 (en) | 2006-12-07 |
EP1731663A1 (en) | 2006-12-13 |
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