ATE388266T1 - SOLVENT FOR SHREDDING AND SUSPENSION OF PAPER - Google Patents

SOLVENT FOR SHREDDING AND SUSPENSION OF PAPER

Info

Publication number
ATE388266T1
ATE388266T1 AT05023603T AT05023603T ATE388266T1 AT E388266 T1 ATE388266 T1 AT E388266T1 AT 05023603 T AT05023603 T AT 05023603T AT 05023603 T AT05023603 T AT 05023603T AT E388266 T1 ATE388266 T1 AT E388266T1
Authority
AT
Austria
Prior art keywords
sieve
openings
length
plate
angle
Prior art date
Application number
AT05023603T
Other languages
German (de)
Inventor
Werner Brettschneider
Original Assignee
Voith Patent 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 Patent Gmbh filed Critical Voith Patent Gmbh
Application granted granted Critical
Publication of ATE388266T1 publication Critical patent/ATE388266T1/en

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The sieve screen (3) has openings (5) with shapes other than circular. The openings are: oval, especially elliptical. They are alternatively slots and/or wavy. The sieve is rotationally-symmetrical. The length (L) of each sieve opening relative to the radius (6) running through the sieve center includes an angle between -80[deg] and +80[deg], preferably between -45[deg] and +45[deg]. The leading edge (10) of the rotor blade runs at an acute angle relative to the length of the sieve openings. This angle is preferably between -45[deg] and +45[deg]. The sieve opening length-to-width ratio is preferably at least 3. Maximum opening width (B) is 4-20 mm. Maximum length (L) is 10-100 mm. The openings are milled, stamped, produced by laser, or by steel-casting. The sieve is a combination of a sieve plate (11) with openings, and a support plate (12). The support plate is a frame- or coarse sieve construction. Its outer contours correspond with those of the plate; its openings are larger than those of the sieve.
AT05023603T 2005-01-11 2005-10-28 SOLVENT FOR SHREDDING AND SUSPENSION OF PAPER ATE388266T1 (en)

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 (1)

Publication Number Publication Date
ATE388266T1 true ATE388266T1 (en) 2008-03-15

Family

ID=34353846

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05023603T ATE388266T1 (en) 2005-01-11 2005-10-28 SOLVENT FOR SHREDDING AND SUSPENSION OF PAPER

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010018120A2 (en) * 2008-08-11 2010-02-18 Voith Patent Gmbh Fractionating arrangement
DE202009017951U1 (en) 2009-10-13 2010-10-21 Voith Patent Gmbh pulper
DE112011104148A5 (en) * 2010-09-17 2013-09-05 Hans-Joachim Boltersdorf Pulper with a 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP1679403A1 (en) 2006-07-12
DE502005003085D1 (en) 2008-04-17
EP1679403B1 (en) 2008-03-05
ES2300923T3 (en) 2008-06-16
DE202005000332U1 (en) 2005-03-17

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee