EP0321665B1 - Pulper mit hoher Auflöseeffizienz - Google Patents

Pulper mit hoher Auflöseeffizienz Download PDF

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Publication number
EP0321665B1
EP0321665B1 EP88116825A EP88116825A EP0321665B1 EP 0321665 B1 EP0321665 B1 EP 0321665B1 EP 88116825 A EP88116825 A EP 88116825A EP 88116825 A EP88116825 A EP 88116825A EP 0321665 B1 EP0321665 B1 EP 0321665B1
Authority
EP
European Patent Office
Prior art keywords
container
rotor
pulper
base rotor
base
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
EP88116825A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0321665A1 (de
Inventor
Jochen Krebs
Wolfgang Dr. Siewert
Arthur Pfau
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.)
Sulzer Escher Wyss GmbH
Original Assignee
Sulzer Escher Wyss 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 Sulzer Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Priority to AT88116825T priority Critical patent/ATE62286T1/de
Publication of EP0321665A1 publication Critical patent/EP0321665A1/de
Application granted granted Critical
Publication of EP0321665B1 publication Critical patent/EP0321665B1/de
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
    • D21B1/345—Pulpers

Definitions

  • the invention relates to a pulper according to the preamble of patent claim 1.
  • Such a pulper _ or "pulper” is e.g. known from EP 0189 379 A1.
  • the fiber-containing material is dissolved in the vessel with the addition of water, the contents of which are set in motion and kept in motion by means of the rotating screw conveyor and the rotating bottom rotor.
  • the known pulper has a relatively high energy requirement, since the transport of the material through the vessel is not optimal. Both the screw conveyor and the bottom rotor work less efficiently, and the flow of the material is vortex-like, with dead spots in which there is very little movement. Thus, the treatment of the material is locally uneven, which delays a treatment to a satisfactory homogeneity of the material.
  • the known pulper is otherwise basically a robust and reliable device
  • the inventors have set themselves the task of improving the pulper.
  • the main aim is to increase the transport efficiency of the screw conveyor and the bottom rotor.
  • a further task is to design the circulation of the material in the vessel without dead spots, as a result of which an even treatment is achieved and the treatment time is to be shortened as a result. This should then lead to significantly lower energy requirements.
  • the Pulper 1 is a pulper for the manufacture of paper products and similar products containing fabric fibers.
  • the pulper 1 has a cylindrical, upright vessel for receiving the material to be dissolved, on the bottom of which a rapidly rotatable, horizontally arranged bottom rotor 12 is mounted. It has ribs 3 at the top.
  • the transport screw picks up the material in the top of the vessel and leads it to the bottom rotor, where it is taken up by the surface of the bottom rotor and flung radially outward.
  • the lower end 14 of the screw conveyor 6 extends in the immediate vicinity of the highest point of the bottom rotor 12. As shown in FIG. 2, the end 14 of the screw conveyor 6 is removed from the highest point of the bottom rotor 12 is less than 1/10 of the diameter 15 of the bottom rotor 12.
  • the diameter 13 of the imaginary circumference (shown in FIG. 3) of the bottom worm gear 14 is approximately 1/3 to 1/4 of the diameter 15 of the bottom rotor 12. It can also be advantageous if the transport screw does not have the same diameter everywhere along its length, so that, for example, a conical shape results.
  • the generatrix 16 of the spiral path of the screw conveyor 6 to its axis is at an angle of less than 90 ° in the direction of transport of the screw conveyor, ie it is inclined downwards.
  • the generatrix 16 can be in the form of an inclined line, a downward-pointing angle profile or a downwardly inclined arc. So that the wall of the spiral passage is designed so that the throwing away of the material to be transported to the bottom rotor 12 is practically prevented.
  • baffle plates 17 are attached to the circumference of the vessel 2. They are flat and curved towards the inside of the vessel and direct the flow of the material into the interior of the vessel. This prevents the tendency to vortex formation in the vessel, and there is a desired, advantageous, toroidal flow, as indicated by the thick, dashed curve line in FIG. 1.
  • the baffle plates 17 are shaped so that their greatest distance 20 from the inner wall of the vessel 2 (FIG. 4) is approximately 0.04 times the inner diameter of the vessel 2.
  • Each baffle plate 17 forms an angle of approximately 30 ° with a tangent 18 drawn to the starting point of the baffle plate, as it is designated by 19 in FIG. 4.
  • the curvature of the baffle plates 17 can deviate from that of the circumference of the vessel 2.
  • the arrangement of the ribs 3 on the surface of the bottom rotor 12 is also important. They point radially outwards and are regularly distributed in a circle. Their number, based on the speed of rotation of the bottom rotor 12, is to be adapted to the postulate that when the bottom rotor rotates, one rib leads the following by a time interval of more than 0.02 sec. This means that in an imaginary checkpoint, a rib runs past the previous one by more than 0.02 sec. This is important for penetration of the material into the space between the ribs 3 desired contact of the material with the surface of the bottom rotor and for optimizing its transport performance, otherwise the material would be rejected by the ribs 3 at a higher frequency, which would disturb the desired contact .

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
EP88116825A 1987-12-19 1988-10-11 Pulper mit hoher Auflöseeffizienz Expired - Lifetime EP0321665B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116825T ATE62286T1 (de) 1987-12-19 1988-10-11 Pulper mit hoher aufloeseeffizienz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873743247 DE3743247A1 (de) 1987-12-19 1987-12-19 Pulper mit hoher aufloeseeffizienz
DE3743247 1987-12-19

Publications (2)

Publication Number Publication Date
EP0321665A1 EP0321665A1 (de) 1989-06-28
EP0321665B1 true EP0321665B1 (de) 1991-04-03

Family

ID=6343081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116825A Expired - Lifetime EP0321665B1 (de) 1987-12-19 1988-10-11 Pulper mit hoher Auflöseeffizienz

Country Status (4)

Country Link
EP (1) EP0321665B1 (enrdf_load_stackoverflow)
AT (1) ATE62286T1 (enrdf_load_stackoverflow)
DE (2) DE3743247A1 (enrdf_load_stackoverflow)
ES (1) ES2021812B3 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2241087C1 (ru) * 2003-01-22 2004-11-27 Товарищество с ограниченной ответственностью - малое предприятие по созданию ресурсосберегающих технологий и решению экологических проблем (ТОО "Рессбертех") Ротор гидроразбивателя
CN1332092C (zh) * 2005-02-23 2007-08-15 李风宁 一种水力碎浆机转子
CN104372702B (zh) * 2014-12-15 2016-08-17 济南大学 一种低功耗低噪声的碎浆机
CN108118548A (zh) * 2017-12-22 2018-06-05 鄢海军 一种高效碎浆机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648261A (en) * 1950-06-30 1953-08-11 Chaplin Corp Fiber disintegrator and separator
AT286090B (de) * 1966-11-01 1970-11-25 Papcel Celulosy Np Wirbelzerfaserer
US3486702A (en) * 1966-11-01 1969-12-30 Papcel Celulosy Np Pulping apparatus
BR8400776A (pt) * 1983-02-28 1984-10-02 Black Clawson Co Rotor particularmente adaptado para uso na polpacao de estoque de fabricacao de papel e aparelho para polpacao de estoque de fabricacao de papel
CA1228762A (en) * 1983-05-18 1987-11-03 Joseph W. Couture Pulping apparatus and method
IT8520484V0 (it) * 1985-01-14 1985-01-14 Ica Spa Spapolatore per prodotti cartacei e/o prodotti similari di scarto.

Also Published As

Publication number Publication date
ATE62286T1 (de) 1991-04-15
ES2021812B3 (es) 1991-11-16
DE3862292D1 (de) 1991-05-08
EP0321665A1 (de) 1989-06-28
DE3743247C2 (enrdf_load_stackoverflow) 1989-12-21
DE3743247A1 (de) 1989-06-29

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