EP0273020A2 - Moyens pour le défibrage et le triage de la pâte à papier dans l'industrie de la papeterie - Google Patents

Moyens pour le défibrage et le triage de la pâte à papier dans l'industrie de la papeterie Download PDF

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Publication number
EP0273020A2
EP0273020A2 EP87850359A EP87850359A EP0273020A2 EP 0273020 A2 EP0273020 A2 EP 0273020A2 EP 87850359 A EP87850359 A EP 87850359A EP 87850359 A EP87850359 A EP 87850359A EP 0273020 A2 EP0273020 A2 EP 0273020A2
Authority
EP
European Patent Office
Prior art keywords
defibrating
zone
sorting
rotor
pulp
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.)
Withdrawn
Application number
EP87850359A
Other languages
German (de)
English (en)
Other versions
EP0273020A3 (fr
Inventor
Jyrki Paavola
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.)
Sunds Defibrator Jylha OY
Original Assignee
Sunds Defibrator Jylha OY
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 Sunds Defibrator Jylha OY filed Critical Sunds Defibrator Jylha OY
Publication of EP0273020A2 publication Critical patent/EP0273020A2/fr
Publication of EP0273020A3 publication Critical patent/EP0273020A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • 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

Definitions

  • the present invention concerns a means for defibrating and sorting pulp in paper and cellulose industry, comprising a defibrating means consisting of a rotor and a stator, wherebetween is established a defibrating zone, and a sorter consisting of the same rotor and another stator, wherebetween is established a sorting zone, and the stator of said sorter having been formed to be sieve-like, and said means comprising a pulp feed, removal of accept and removal of reject.
  • Apparatus in present use are usually separate defibrators and sorters. Also such apparatus exists which both defibrates and sorts simultaneously.
  • the object of the present invention is to provide a means similar to that described above for defibrating and sorting pulp in paper and cellulose industry, but which is not true of current problems.
  • the means of the invention is characterized in that the angle between the centre line of the rotor shaft and the defibrating zone is 75 to 105°, and the angle between the sorting zone and the centre-line of the rotor shaft is 75 to 105°, and that the defibrating zone and sorting zone are located in the same pulp space.
  • the defibrating efficiency can be steplessly regulated.
  • the fibre flocs can be dispersed, whereby only particles which are not fit to be included in the accept pulp are removed.
  • the defibrating stage or the sorting stage may, if desired, be cut out from the means.
  • the speed of rotation range is properly chosen, the fluidizing effect of the defibrator enables efficient sorting in the same consistency range.
  • stator of the defibrating means by reference numeral 1 and the rotor of the defibrating means by reference numeral 2, said rotor being rotating, as its name indicates.
  • a defibrating zone in which the material fed in through the feed 4 is defibrated.
  • the stator 3 of the sorter is made to be sieve-like in that it passes the defibered material. That part of material which cannot go through the sieve 3 escapes, under centrifugation force action, through the reject exit connector 6.
  • the defibrated material passing through the sieve exits through the accept exit connector 7.
  • the angle ⁇ between the defibrating zone and the centre-line 8 of the shaft of the rotor 2 is 75 to 105°, preferably 90°.
  • the angle ⁇ between the sorting zone and the centre-line 8 of the shaft is likewise 75 to 105°, preferably 90°.
  • defibrating zone and the sorting zone are in the same pulp space 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP87850359A 1986-12-22 1987-11-19 Moyens pour le défibrage et le triage de la pâte à papier dans l'industrie de la papeterie Withdrawn EP0273020A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI865283A FI76601C (fi) 1986-12-22 1986-12-22 Anordning foer defibrering och sortering av massa inom pappers- och cellulosaindustrin.
FI865283 1986-12-22

Publications (2)

Publication Number Publication Date
EP0273020A2 true EP0273020A2 (fr) 1988-06-29
EP0273020A3 EP0273020A3 (fr) 1989-02-01

Family

ID=8523696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87850359A Withdrawn EP0273020A3 (fr) 1986-12-22 1987-11-19 Moyens pour le défibrage et le triage de la pâte à papier dans l'industrie de la papeterie

Country Status (3)

Country Link
EP (1) EP0273020A3 (fr)
FI (1) FI76601C (fr)
NO (1) NO165931C (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB800318A (en) * 1956-10-23 1958-08-27 Rauma Repola Oy Improvements in or relating to slurry inlet means in strainer apparatus
FR1385712A (fr) * 1963-12-27 1965-01-15 Ingersoll Rand Canada Procédé et appareil pour le travail de matières fibreuses
US4543181A (en) * 1982-12-16 1985-09-24 Kamyr, Inc. Medium consistency flat disk pressure screen
SE443007B (sv) * 1985-03-04 1986-02-10 Kamyr Ab Silanordning

Also Published As

Publication number Publication date
FI865283A0 (fi) 1986-12-22
FI76601B (fi) 1988-07-29
NO165931C (no) 1991-05-02
FI76601C (fi) 1988-11-10
NO875352L (no) 1988-06-23
EP0273020A3 (fr) 1989-02-01
NO875352D0 (no) 1987-12-21
NO165931B (no) 1991-01-21

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