WO1987005643A1 - Disc refiner - Google Patents

Disc refiner Download PDF

Info

Publication number
WO1987005643A1
WO1987005643A1 PCT/NO1987/000022 NO8700022W WO8705643A1 WO 1987005643 A1 WO1987005643 A1 WO 1987005643A1 NO 8700022 W NO8700022 W NO 8700022W WO 8705643 A1 WO8705643 A1 WO 8705643A1
Authority
WO
WIPO (PCT)
Prior art keywords
disc refiner
screw
pulp
press
central cavity
Prior art date
Application number
PCT/NO1987/000022
Other languages
English (en)
French (fr)
Inventor
Ole Bottegaard
Original Assignee
Thune-Eureka A/S
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 Thune-Eureka A/S filed Critical Thune-Eureka A/S
Publication of WO1987005643A1 publication Critical patent/WO1987005643A1/en

Links

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

Definitions

  • the invention relates to a disc refiner having a direct coupled feed screw press delivering pulp to a central cavity in the disc refiner.
  • the object of the present invention is to provide for an escape passage for steam tending to escape upstream in a disc refiner to which pulp is directly delivered through a screw press.
  • the invention therefor provide for a disc refiner having a direct coupled feed screw press delivering pulp to a central cavity in the disc refiner, a steam escape passage from said cavity extending out through the press screw of said screw press.
  • the press screw may have a hollow shaft through which said steam may escape.
  • the press screw may further preferably end at a distance from the opposing disc in the cavity area so that the steam may expand in the central cavity.
  • the press screw may have a central coaxial extension comprising the steam escape passage, said extension extending into the central cavity and centrally into a pulp beater arranged in the central cavity.
  • a such construction enhances separation of pulp and steam in this area thereby avoiding that pulp enters said steam escape passage. If the disc refiner is of the type having radially extending wall portions in the central cavity, this will enhance the separation of steam and pulp.
  • the pulp plug delivered from the screw press will enter the central cavity in the disc refiner. In this cavity the pulp flow will be allowed to equalize.
  • the disclosed disc refiner 1 is of conventional construction and has two refiner zones.
  • a screw press 2 also known per se, is directly coupled to the disc refiner 1 and deliver pulp into a central cavity 5 of the disc refiner.
  • the conventional screw press 2 includes a conical screw 3 surrounded by a screen 4.
  • a pulp beater 6 is arranged in the central cavity and is mounted on the rotor shaft 7 of the disc refiner for rotation therewith.
  • the conical screw 3 terminates at a distance from the opposite disc in the central cavity.
  • the screw has, however, a centrally coaxial extension 8 extending into the central cavity and into the pulp beater 6.
  • the screw 3 is hollow in that it includes an axially extending bore 9.
  • a bore 10 extends transversally crossing said axial bore 9 thereby providing a passage connection to a chamber 11.
  • Steam from the central cavity 5 may escape through the axial bore 9 and into the chamber 11 through the transversal bore 10. From the chamber 11 steam may flow out through a conduit 12.
  • the disclosed disc refiner 1 is adapted for refining of medium consistence chemical pulp. Pulp is delivered to the screw press 2 as shown with arrow 13. During the process the screw 3 will remain filled with pulp and will deliver pulp centrally in the disc refiner 1, that is in the central cavity 5. By increased energy expenditure, heat will develop, resulting in the developing of steam between the refiner discs. Such steam may escape upstream through the axial bore 9, transversal bore 10 and out through chamber 11 and conduit 12.
  • the extension 8 allows for a separation of pulp and steam in the central cavity 5.
  • the radial wall portions 14 in the refiner will also add to a such separation effect.
  • the invention provides a controlled evacuation of steam from a disc refiner.
  • the escaping steam may be directed to any conventional place through conduit 12.

Landscapes

  • Paper (AREA)
  • Polarising Elements (AREA)
PCT/NO1987/000022 1986-03-18 1987-03-17 Disc refiner WO1987005643A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO861037 1986-03-18
NO861037A NO162525C (no) 1986-03-18 1986-03-18 Anordning ved skiveraffinoer.

Publications (1)

Publication Number Publication Date
WO1987005643A1 true WO1987005643A1 (en) 1987-09-24

Family

ID=19888819

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1987/000022 WO1987005643A1 (en) 1986-03-18 1987-03-17 Disc refiner

Country Status (2)

Country Link
NO (1) NO162525C (no)
WO (1) WO1987005643A1 (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348802A1 (de) * 2002-03-27 2003-10-01 Andritz AG Verfahren und Vorrichtung zur Dispergierung eines Papierfaserstoffes
CN105887543A (zh) * 2014-11-12 2016-08-24 吴解生 带计量压缩进料装置的偏心进料高浓磨浆机
WO2017061936A1 (en) * 2015-10-08 2017-04-13 Valmet Ab Feeding center plate in a pulp or fiber refiner

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441227A (en) * 1966-12-22 1969-04-29 Sprout Waldron & Co Inc Refiner feeder
SE371654B (no) * 1973-11-09 1974-11-25 Sca Project Ab
US4082233A (en) * 1975-06-04 1978-04-04 Rolf Bertil Reinhall Disc refiner having means for removing gaseous media from pulp stock
US4129263A (en) * 1976-09-09 1978-12-12 Sunds Aktiebolag Device for refining fibrous material
US4163525A (en) * 1977-01-03 1979-08-07 Reinhall Rolf Bertil Device for evacuating blow-back steam in pulp refining apparatus
US4221343A (en) * 1979-04-30 1980-09-09 The Bauer Bros. Co. Vented disc refiner
SE422341B (sv) * 1978-12-01 1982-03-01 Sunds Defibrator Anordning for raffinering av lignocellulosahaltigt material
SE428938B (sv) * 1978-05-26 1983-08-01 Enso Gutzeit Oy Skivraffinor for defibrering av material, sasom treflis
WO1985003730A1 (en) * 1984-02-15 1985-08-29 Thune-Eureka A/S Apparatus for thickening and refining fibre-pulp suspensions
SE442028B (sv) * 1980-09-08 1985-11-25 Sunds Defibrator Inc Anordning vid malapparater av skivtyp for styckeformigt, foretredesvis lignocellulosahaltigt material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441227A (en) * 1966-12-22 1969-04-29 Sprout Waldron & Co Inc Refiner feeder
SE371654B (no) * 1973-11-09 1974-11-25 Sca Project Ab
US4082233A (en) * 1975-06-04 1978-04-04 Rolf Bertil Reinhall Disc refiner having means for removing gaseous media from pulp stock
US4129263A (en) * 1976-09-09 1978-12-12 Sunds Aktiebolag Device for refining fibrous material
US4163525A (en) * 1977-01-03 1979-08-07 Reinhall Rolf Bertil Device for evacuating blow-back steam in pulp refining apparatus
SE428938B (sv) * 1978-05-26 1983-08-01 Enso Gutzeit Oy Skivraffinor for defibrering av material, sasom treflis
SE422341B (sv) * 1978-12-01 1982-03-01 Sunds Defibrator Anordning for raffinering av lignocellulosahaltigt material
US4221343A (en) * 1979-04-30 1980-09-09 The Bauer Bros. Co. Vented disc refiner
SE442028B (sv) * 1980-09-08 1985-11-25 Sunds Defibrator Inc Anordning vid malapparater av skivtyp for styckeformigt, foretredesvis lignocellulosahaltigt material
WO1985003730A1 (en) * 1984-02-15 1985-08-29 Thune-Eureka A/S Apparatus for thickening and refining fibre-pulp suspensions

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT; & SU,A,785404, 27 December 1980. *
DERWENT'S ABSTRACT; & SU,A,996576, (UKR CELLULOSE-PAPER RES), 3 February 1982. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348802A1 (de) * 2002-03-27 2003-10-01 Andritz AG Verfahren und Vorrichtung zur Dispergierung eines Papierfaserstoffes
CN105887543A (zh) * 2014-11-12 2016-08-24 吴解生 带计量压缩进料装置的偏心进料高浓磨浆机
WO2017061936A1 (en) * 2015-10-08 2017-04-13 Valmet Ab Feeding center plate in a pulp or fiber refiner
CN108026693A (zh) * 2015-10-08 2018-05-11 维美德公司 纸浆或纤维精磨机中的馈送中心盘
US10449545B2 (en) 2015-10-08 2019-10-22 Valmet Ab Feeding center plate in a pulp or fiber refiner

Also Published As

Publication number Publication date
NO162525B (no) 1989-10-02
NO162525C (no) 1990-01-10
NO861037L (no) 1987-09-21

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