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WO2011088888A3 - Low energy head box - Google Patents

Low energy head box Download PDF

Info

Publication number
WO2011088888A3
WO2011088888A3 PCT/EP2010/050572 EP2010050572W WO2011088888A3 WO 2011088888 A3 WO2011088888 A3 WO 2011088888A3 EP 2010050572 W EP2010050572 W EP 2010050572W WO 2011088888 A3 WO2011088888 A3 WO 2011088888A3
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
tube bank
head box
turbulence generator
header
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.)
Ceased
Application number
PCT/EP2010/050572
Other languages
French (fr)
Other versions
WO2011088888A2 (en
Inventor
Janne Lappi
Sami Anttilainen
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper 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 Metso Paper Oy filed Critical Metso Paper Oy
Priority to PCT/EP2010/050572 priority Critical patent/WO2011088888A2/en
Publication of WO2011088888A2 publication Critical patent/WO2011088888A2/en
Publication of WO2011088888A3 publication Critical patent/WO2011088888A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section

Landscapes

  • Paper (AREA)

Abstract

There is described a head box for a paper machine or the like, wherein a nozzle (1) is adapted to apply a web-forming, fiber- containing pulp to a wire arrangement. The head box comprises a header (3) to which said pulp is supplied, a tube bank (4) including a plurality of tubes arranged side by side in the cross machine direction and connected to the header (3). Flow control elements (5) are arranged in the tube bank (4) for controlling flow passing through the individual tubes of the tube bank (4). Downstream of the tube bank (4) is a turbulence generator (2) which connects the tube bank (4) to the nozzle (1). The turbulence generator (2) has pulp channels (231-235) having a cross-sectional shape which changes gradually between inlet and outlet of said turbulence generator (2). Preferably, the total internal wall surface as defined by the channel axial length and internal circumference length is set to generate a turbulent boundary layer of the pulp flow causing breaking of fiber flocks in the pulp so that e.g. the passage of each channel may be of stepless and aerodynamic shape.
PCT/EP2010/050572 2010-01-19 2010-01-19 Low energy head box Ceased WO2011088888A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/050572 WO2011088888A2 (en) 2010-01-19 2010-01-19 Low energy head box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/050572 WO2011088888A2 (en) 2010-01-19 2010-01-19 Low energy head box

Publications (2)

Publication Number Publication Date
WO2011088888A2 WO2011088888A2 (en) 2011-07-28
WO2011088888A3 true WO2011088888A3 (en) 2011-09-29

Family

ID=44217492

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/050572 Ceased WO2011088888A2 (en) 2010-01-19 2010-01-19 Low energy head box

Country Status (1)

Country Link
WO (1) WO2011088888A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103734898A (en) * 2013-12-19 2014-04-23 云南中烟昆船瑞升科技有限公司 Intelligent reconstituted tobacco molding device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331040A1 (en) * 2003-07-09 2005-01-27 Voith Paper Patent Gmbh Papermaking assembly fibre suspension headbox has throttle control of dilution mechanism in outer margin
DE202007003440U1 (en) * 2006-03-27 2007-04-26 Metso Paper, Inc. Paper mill former has headbox discharging via vortex generator zone to progressively converging outlet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19908898A1 (en) 1999-03-02 2000-09-07 Voith Sulzer Papiertech Patent Process for metering a fluid medium into a suspension stream of a headbox and headbox
FI20001405A7 (en) 2000-06-13 2001-12-14 Metso Paper Inc Method for fluidizing a pulp flow in a headbox of a paper machine or similar and control equipment used in fluidization

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331040A1 (en) * 2003-07-09 2005-01-27 Voith Paper Patent Gmbh Papermaking assembly fibre suspension headbox has throttle control of dilution mechanism in outer margin
DE202007003440U1 (en) * 2006-03-27 2007-04-26 Metso Paper, Inc. Paper mill former has headbox discharging via vortex generator zone to progressively converging outlet

Also Published As

Publication number Publication date
WO2011088888A2 (en) 2011-07-28

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