EP0806518B1 - Dispositif pour le pétrissage d'une pulpe à consistance élevée - Google Patents

Dispositif pour le pétrissage d'une pulpe à consistance élevée Download PDF

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Publication number
EP0806518B1
EP0806518B1 EP97104827A EP97104827A EP0806518B1 EP 0806518 B1 EP0806518 B1 EP 0806518B1 EP 97104827 A EP97104827 A EP 97104827A EP 97104827 A EP97104827 A EP 97104827A EP 0806518 B1 EP0806518 B1 EP 0806518B1
Authority
EP
European Patent Office
Prior art keywords
teeth
kneading
pulp
angle
kneading device
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.)
Expired - Lifetime
Application number
EP97104827A
Other languages
German (de)
English (en)
Other versions
EP0806518A1 (fr
Inventor
Ulrich Wieland
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 EP0806518A1 publication Critical patent/EP0806518A1/fr
Application granted granted Critical
Publication of EP0806518B1 publication Critical patent/EP0806518B1/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
    • 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
    • D21B1/342—Mixing apparatus

Definitions

  • the invention relates to a device for kneading highly consistent fibrous material according to the preamble of claim 1.
  • a kneading device is e.g. B. known from DE-42 37 433 A1.
  • This for kneading Device suitable for waste paper serves to intensively mechanically and possibly the substance can also be processed thermally, thereby removing the contaminants contained in the fibers can be detached, crushed and / or brought below the visibility limit.
  • the starting material intended for the kneading process already has a pasty or soft-crumbly shape, so is no longer with wood chips or still coarser substances comparable. Other than z. B.
  • the pulp in pulp refiners in such machines the pulp is not in a pumpable suspension edited, but just as a high consistency substance, preferably with one Dry content between 15 and 40%. In this way, considerable Transfer shear forces into the fiber material, whereby the stated goals can be achieved, without any significant change in fiber length.
  • the effect of mechanical treatment is further enhanced by heat, e.g. by setting a fiber temperature of 90 ° Celsius or even higher.
  • the substance In the kneader, the substance usually stays in for 15 seconds to several minutes the processing rooms and is due to the distance of more than 3 mm between the tools are mainly processed by fiber-fiber friction. As is known this protects the fiber and the processing tools become slow worn.
  • the basic structure of the kneader is almost always as in the example of DE-42 37 433 A1 recognizable:
  • the rotor is essentially cylindrical, and the material becomes conveyed axially between standing and moving kneading teeth.
  • Such kneaders have long proven themselves especially for the use of waste paper.
  • the transportation of the Material through the processing zone is usually both by tilting the Machining teeth and secured by a suitable conveyor, which e.g. is designed as a helix on the kneader shaft.
  • the funding parameters are so practically firm.
  • the invention is therefore based on the object of a device for kneading to create highly consistent fibrous material, which without any significant additional effort Possibility to change the transport movement in the processing zone.
  • the front of the teeth of such a kneading tool moves relative to the Pulp too. Since the incline on the front is a sliding and Deflection movement of the substance to be transported in the transport direction causes the mass transfer is supported in the kneader. Prerequisite for this is the relative movement between the bevel and the pulp, either by doing so can arise that the tooth in question belongs to the moving kneading tool or in that a fixed tooth of a material moved in the circumferential direction is flowed to.
  • the device equipped according to the invention now exists the possibility of simply turning a tooth or a group of teeth one or more kneading tools the surface of the previously used as the back To bring tooth to the front.
  • the transport effect of the angle depends on the incline in relation to the direction of movement of the tooth or the material on the unmoved tooth, can be turned by turning such a tooth, e.g. by 180 ° with different angles of the slopes also a different one Transport effect can be achieved.
  • the mass transfer in the kneader can be used for various applications and the same kneader are desired differently.
  • a part of or all accordingly equipped teeth are turned. Even in the cases where the Slopes on the front and back are the same, can be turned one less worn area for transporting the fabric.
  • the slope can even be chosen so that the Material transport brakes.
  • an upstream or downstream one would Transport device can still be forced throughput through the machine have to.
  • Figure 1a shows in a developed form the supervision of the part of a movable Kneading tool 1, which belongs to a kneader with an axial flow of material.
  • a movable Kneading tool which belongs to a kneader with an axial flow of material.
  • Cut teeth are indicated 2 ' a fixed kneading tool.
  • the teeth 2, 2 ' are both on the front as well also bevelled on the back.
  • everyone has Teeth are essentially the same shape, but this does not always have to be the case (see also Fig. 3). Due to their arrangement in the kneading device, the teeth 2 at Operation moved in the circumferential direction (arrow 3).
  • a plane E is spanned here, shown in section.
  • the The direction of transport T of the fibrous material is perpendicular to this plane E.
  • the angles which have the bevels in relation to the transport direction T are at an angle ⁇ 1 Front and angle ⁇ 2 on the back - each in the position before turning of the tooth - specified.
  • Fig. 1 b shows the parts of Fig. 1 a after turning the teeth 2 and 2 'through 180 °.
  • the transport effect on the front of the teeth is because of the lower Inclination less. Of course, these tooth surfaces can also be curved.
  • the decisive factor is their transport effect.
  • Figure 2 shows a slightly different attachment of the device to the invention belonging teeth 2.
  • the turning of the teeth can be done Turn this bar 4 done.
  • Such a bar can be used as a rotor or stator belong on which it is attached along its length substantially axially aligned.
  • Figure 3 shows in section an axially constructed kneading device, in which the Transport movement of the fibrous material also takes place axially again.
  • the presentation is rough schematic and contains e.g. only a small part of the real teeth.
  • the Fibrous material S is fed into the actual feed screw 5 Machining zone pressed.
  • there the teeth 2 'belonging to the stator housing 7 are shown cut.
  • a part of here they have a varied, strongly rounded shape, but another part is cubic without bevels.
  • Fig. 4 shows the part of a kneading tool that belongs to a radial kneader.
  • the Mass transport with transport direction T thus takes place radially outwards from the inside.
  • the circumferential movement (arrow 3) of the tooth base normal N 'of the teeth 2 becomes one cylindrical surface F spanned.
  • the holes 9 are provided for fastening screws.
  • the one to the stator belonging tooth 2 ' is only indicated. Unlike the example shown here, it can differ in shape from the moving teeth 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Paper (AREA)

Claims (10)

  1. Dispositif de pétrissage d'une matière fibreuse (S) très consistante, comportant au moins deux outils de pétrissage (1, 1') coaxiaux, déplaçables l'un par rapport à l'autre et présentant sensiblement une symétrie de révolution, qui présentent des dents (2, 2') disposées en rangées annulaires, entre lesquelles se trouvent des entredents, dans lequel des espaces vides annulaires se trouvent entre les rangées de dents et sont positionnés les uns par rapport aux autres, de manière qu'au moins une rangée de dents d'un outil de pétrissage (1, 1') pénètre à l'intérieur d'un espace vide annulaire d'un autre outil de pétrissage (1', 1), dans lequel au moins sur une partie des dents (2, 2') la face avant présente une surface oblique sur laquelle la matière fibreuse est déviée dans le sens (T) du transport, par mouvement relatif entre la matière fibreuse et la surface qui forme la face avant, dans lequel le sens (T) du transport résulte du passage de la matière fibreuse à travers le dispositif de pétrissage, caractérisé en ce qu'au moins une partie des dents (2, 2') contient également des surfaces obliques sur la face arrière, en ce que l'angle (α1) de la surface oblique de la face avant diffère d'au moins 5 degrés de l'angle (α2) de la face arrière, et en ce qu'au moins une partie des dents (2, 2') est fixée de manière non permanente de façon que la position de la face avant et de la face arrière soit interchangeable par retournement des dents (2, 2').
  2. Dispositif de pétrissage selon la revendication 1, caractérisé en ce que le retournement de la dent (2, 2') s'effectue sous un angle de 180 degrés.
  3. Dispositif de pétrissage selon la revendication 1, ou 2, caractérisé en ce que l'angle (α1) de la surface oblique de la face avant diffère d'au moins 15 degrés de l'angle (α2) de la face arrière.
  4. Dispositif de pétrissage selon la revendication 1, 2 ou 3, caractérisé en ce que le sens (T) de transport de la matière fibreuse est perpendiculaire à la surface (E, F) définie par le mouvement des dents.
  5. Dispositif de pétrissage selon la revendication 4, caractérisé en ce que le sens (T) de transport se situe dans la direction de l'axe des outils de pétrissage.
  6. Dispositif de pétrissage selon la revendication 4, caractérisé en ce que le sens (T) de transport est radial et son centre se situe dans l'axe médian des outils de pétrissage (1, 1').
  7. Dispositif de pétrissage selon l'une des revendications précédentes, caractérisé en ce que plusieurs dents (2, 2') d'un outil de pétrissage (1, 1') sont réunies sur un segment de garniture qui peut être retourné.
  8. Dispositif de pétrissage selon les revendications 6 et 7, caractérisé en ce que le segment de garniture contient un anneau fermé.
  9. Dispositif de pétrissage selon la revendication 8, caractérisé en ce que le segment de garniture contient un segment annulaire qui s'étend sur un angle périphérique de 180 degrés au plus.
  10. Dispositif de pétrissage selon les revendications 6 et 7, caractérisé en ce que le segment de garniture contient des baguettes (4) qui sont fixées axialement sur l'outil de pétrissage (1, 1') et qui portent chacune des dents (2) faisant partie de plusieurs rangées de dents.
EP97104827A 1996-05-10 1997-03-21 Dispositif pour le pétrissage d'une pulpe à consistance élevée Expired - Lifetime EP0806518B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19618886 1996-05-10
DE19618886 1996-05-10

Publications (2)

Publication Number Publication Date
EP0806518A1 EP0806518A1 (fr) 1997-11-12
EP0806518B1 true EP0806518B1 (fr) 2001-06-27

Family

ID=7793965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104827A Expired - Lifetime EP0806518B1 (fr) 1996-05-10 1997-03-21 Dispositif pour le pétrissage d'une pulpe à consistance élevée

Country Status (5)

Country Link
US (1) US5836689A (fr)
EP (1) EP0806518B1 (fr)
AT (1) ATE202603T1 (fr)
DE (1) DE59703888D1 (fr)
NO (1) NO310307B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267847B1 (en) * 1999-11-15 2001-07-31 Voith Sulzer Paper Technology North America, Inc. Pulper for a stock preparation system
DE10024122A1 (de) * 2000-05-18 2001-11-22 Lipp Mischtechnik Gmbh Vorrichtung zur Herstellung von Kaugummi
AU2001213042A1 (en) * 2000-11-13 2002-05-21 Morinaga And Co. Ltd. Kneading device and forming device
US6767123B2 (en) * 2001-08-15 2004-07-27 Morinaga & Co., Ltd. Kneading device
CN101725065B (zh) * 2009-12-01 2011-09-07 沈阳市宏芮化学品厂 一种反刍式高浓碎浆机
SE536456C2 (sv) * 2011-12-15 2013-11-12 Metso Paper Sweden Ab Blandningsenhet innefattande åtminstone två rotorkroppar föranvändning i en blandningsanordning och en blandningsanordning
DE102021119250B3 (de) * 2021-07-26 2022-07-28 Voith Patent Gmbh Vorrichtung zum Auflösen von Faserstoff

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE446025C (de) * 1926-08-21 1927-06-22 Eduard Sterzl Verfahren und Vorrichtung zur Zerkleinerung, Vermahlung, Auffaserung, Mischung oder Verfilzung von feuchten oder trockenen Stoffen
US1711154A (en) * 1926-12-30 1929-04-30 Turbinator Company Inc Mixing and grinding device
US1977955A (en) * 1930-04-02 1934-10-23 Lancaster Asphalt Inc Mixing and reducing apparatus
US2283008A (en) * 1940-08-01 1942-05-12 Pennsylvania Salt Mfg Co Chemical processing apparatus
US2520424A (en) * 1947-05-02 1950-08-29 Procter & Gamble Continuous hydrogenator
CH278575A (de) * 1949-11-04 1951-10-31 List Heinz Misch- und Knetmaschine.
BE561975A (fr) * 1956-11-14
BE607376A (fr) * 1960-08-22 1900-01-01
US3938783A (en) * 1970-10-30 1976-02-17 The Upjohn Company Method for continuous mixing of foam materials
GB1390190A (en) * 1971-07-01 1975-04-09 Wisz E Mixing apparatus and method
JPS59167240A (ja) * 1983-03-14 1984-09-20 Chisso Corp 有機フイラ−を配合された熱可塑性樹脂組成物の成形物の製法及びそのための装置
DE3772991D1 (de) * 1987-08-21 1991-10-17 Schumacher Walter Vorrichtung zum extrudieren, expandieren und/oder thermischen behandeln von stoffen und stoffgemischen.
US5032073A (en) * 1989-10-06 1991-07-16 Thermax Wire Corp. Thin walled high velocity propagation of foamed thermoplastic resins
DE4118091A1 (de) * 1991-06-03 1992-12-10 Theysohn Friedrich Fa Vorrichtung zum plastifizieren von kunststoff
DE4237433C2 (de) * 1992-11-06 1994-05-11 Voith Gmbh J M Stoffknetmaschine
US5450368A (en) * 1993-12-28 1995-09-12 Three Bond Co., Ltd. Two liquid type mixer

Also Published As

Publication number Publication date
DE59703888D1 (de) 2001-08-02
NO310307B1 (no) 2001-06-18
EP0806518A1 (fr) 1997-11-12
NO971738D0 (no) 1997-04-16
NO971738L (no) 1997-11-11
ATE202603T1 (de) 2001-07-15
US5836689A (en) 1998-11-17

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