EP0345234A2 - Speisesystem für den Former einer Maschine zur Trockenherstellung von Papier - Google Patents

Speisesystem für den Former einer Maschine zur Trockenherstellung von Papier Download PDF

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Publication number
EP0345234A2
EP0345234A2 EP89850167A EP89850167A EP0345234A2 EP 0345234 A2 EP0345234 A2 EP 0345234A2 EP 89850167 A EP89850167 A EP 89850167A EP 89850167 A EP89850167 A EP 89850167A EP 0345234 A2 EP0345234 A2 EP 0345234A2
Authority
EP
European Patent Office
Prior art keywords
former
dry
feeding
paper machine
fibre material
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Withdrawn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
EP89850167A
Other languages
English (en)
French (fr)
Other versions
EP0345234A3 (de
Inventor
Helmer Gustafsson
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.)
Yhtyneet Paperitehtaat Oy Walkisoft Engineering
Yhtyneet Paperitehtaat Oy
Original Assignee
Yhtyneet Paperitehtaat Oy Walkisoft Engineering
Yhtyneet Paperitehtaat 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 Yhtyneet Paperitehtaat Oy Walkisoft Engineering, Yhtyneet Paperitehtaat Oy filed Critical Yhtyneet Paperitehtaat Oy Walkisoft Engineering
Publication of EP0345234A2 publication Critical patent/EP0345234A2/de
Publication of EP0345234A3 publication Critical patent/EP0345234A3/de
Withdrawn legal-status Critical Current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
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/066—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being pulp sheets
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper

Definitions

  • This invention is related to a feeding system for the former of a dry-paper machine, in which feeding system the fibre material is disintegrated in such a form as is required by the former.
  • the former of a dry-paper machine usually comprises a screening tanklike or tubular treating space, into which the web-forming fibre material is fed with air stream.
  • a screening tanklike or tubular treating space into which the web-forming fibre material is fed with air stream.
  • the former is normally fed with chemical pulp shredded, or disintegrated, in a hammer mill; and into the hammer mill the chemical pulp is fed direct from the roll.
  • a system according to the invention is characterized by that it comprises a shredder, in which the chemical pulp web gets preshredded, a disc refiner, in which the preshredded chemical pulp gets defibrated, and fibre material transport devices between the various parts of the system for a continuous feeding of the former.
  • the invention is based on the insight new to a person skilled in the art that it is both possible and economical to use a disc refiner in the manufacture of dry paper and that it is possible to construct the former so that it, for instance in continuous interaction with the defibration equipment, can fully utilize the defibration capacity of the disc refiner.
  • an advantageous embodiment of a system according to the invention is characterized by that it includes devices for conveying into the disc refiner for a new defibration the material that has been rejected or otherwise remained unscreened in the former.
  • the figure shows a dry-paper machine's former unit 1, which has a rotating cylindrical former drum 2 with a perforated mantle.
  • the fibre material is fed through a pipe 3 into the drum 2, which disperses the fibres into an even fibre web 9 on the wire running under the drum.
  • the fibre material is formed in accordance with the invention by shredding rolled chemical pulp 4 in a preshredder 5 and, sped up by a blower 7a, transporting it into a disc refiner 6 equipped with a feeding funnel and a conveyor screw, where the actual defibration occurs.
  • a blower 7b raises the pressure in the pipe 3 if the process pressure of the refiner is not enough for transporting the fibres into the former drum 2.
  • Fibres and fibre flocks that have travelled through the drum 2 are fed with a blower 7c through a pipe 8 back into the refiner 6.
  • a secondary circuit for the blast air of the drum in which the air that has been sucked through the wire is returned with a blower 7d through a pipe 10 to act as a cleaning jet over the drum.
  • the refiner can be equipped with various accessories for instance for feeding arrangements or to control the steam generated in the process. And for a multiphase refining of the fibre material, the refiner can also have more than one phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
EP19890850167 1988-05-20 1989-05-19 Speisesystem für den Former einer Maschine zur Trockenherstellung von Papier Withdrawn EP0345234A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI882400A FI81642C (fi) 1988-05-20 1988-05-20 Matarsystem foer en former vid en torrpappersmaskin.
FI882400 1988-05-20

Publications (2)

Publication Number Publication Date
EP0345234A2 true EP0345234A2 (de) 1989-12-06
EP0345234A3 EP0345234A3 (de) 1991-08-07

Family

ID=8526493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890850167 Withdrawn EP0345234A3 (de) 1988-05-20 1989-05-19 Speisesystem für den Former einer Maschine zur Trockenherstellung von Papier

Country Status (3)

Country Link
EP (1) EP0345234A3 (de)
JP (1) JPH02112500A (de)
FI (1) FI81642C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054873A1 (en) * 2000-01-28 2001-08-02 Scan-Web I/S Apparatus for dry-distributing of fibrous materials
EP1177089A1 (de) * 1999-04-09 2002-02-06 BKI Holding Corporation Verteilungs-einrichtung zum trocken-formen von flächigen faser-produkten
US6726461B2 (en) 1999-05-27 2004-04-27 Bki Holding Corporation Screen pipe for dry forming web material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6855903B2 (ja) * 2017-04-24 2021-04-07 セイコーエプソン株式会社 処理装置およびシート製造装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1129695A (en) * 1966-08-17 1968-10-09 Mo Och Domsjoe Ab Improvements in the disintegration of cellulose pulp
DE1940953A1 (de) * 1969-08-12 1971-04-08 Heinrich Spoerl Spezialmaschin Verfahren und Vorrichtung zur Herstellung von aufgeloester,trockener Zellulose
DE2757581A1 (de) * 1977-11-30 1979-05-31 Escher Wyss Gmbh Stoffloeseranlage mit einem stoffloeser zum aufloesen und sortieren von altpapier
EP0032772A1 (de) * 1980-01-18 1981-07-29 Scanweb I/S Vorrichtung zum Trockenbilden von Papier oder eines anderen Bahnmaterials aus Teilchen oder Fasern
GB2096661A (en) * 1981-04-10 1982-10-20 Voith Gmbh J M A process for preparing waste paper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1129695A (en) * 1966-08-17 1968-10-09 Mo Och Domsjoe Ab Improvements in the disintegration of cellulose pulp
DE1940953A1 (de) * 1969-08-12 1971-04-08 Heinrich Spoerl Spezialmaschin Verfahren und Vorrichtung zur Herstellung von aufgeloester,trockener Zellulose
DE2757581A1 (de) * 1977-11-30 1979-05-31 Escher Wyss Gmbh Stoffloeseranlage mit einem stoffloeser zum aufloesen und sortieren von altpapier
EP0032772A1 (de) * 1980-01-18 1981-07-29 Scanweb I/S Vorrichtung zum Trockenbilden von Papier oder eines anderen Bahnmaterials aus Teilchen oder Fasern
GB2096661A (en) * 1981-04-10 1982-10-20 Voith Gmbh J M A process for preparing waste paper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1177089A1 (de) * 1999-04-09 2002-02-06 BKI Holding Corporation Verteilungs-einrichtung zum trocken-formen von flächigen faser-produkten
EP1177089A4 (de) * 1999-04-09 2002-08-07 Bki Holding Corp Verteilungs-einrichtung zum trocken-formen von flächigen faser-produkten
US6726461B2 (en) 1999-05-27 2004-04-27 Bki Holding Corporation Screen pipe for dry forming web material
WO2001054873A1 (en) * 2000-01-28 2001-08-02 Scan-Web I/S Apparatus for dry-distributing of fibrous materials
US7597200B2 (en) 2000-01-28 2009-10-06 Scan-Web I/S Apparatus for dry-distributing of fibrous materials

Also Published As

Publication number Publication date
FI882400A (fi) 1989-11-21
FI882400A0 (fi) 1988-05-20
FI81642C (fi) 1990-11-12
JPH02112500A (ja) 1990-04-25
FI81642B (fi) 1990-07-31
EP0345234A3 (de) 1991-08-07

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