EP0733735A3 - Wet end of a papermachine - Google Patents

Wet end of a papermachine Download PDF

Info

Publication number
EP0733735A3
EP0733735A3 EP96102508A EP96102508A EP0733735A3 EP 0733735 A3 EP0733735 A3 EP 0733735A3 EP 96102508 A EP96102508 A EP 96102508A EP 96102508 A EP96102508 A EP 96102508A EP 0733735 A3 EP0733735 A3 EP 0733735A3
Authority
EP
European Patent Office
Prior art keywords
lines
screen
stream
water
stream lines
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.)
Granted
Application number
EP96102508A
Other languages
German (de)
French (fr)
Other versions
EP0733735B1 (en
EP0733735A2 (en
Inventor
Ulrich Begemann
Dirk Thomas
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.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0733735A2 publication Critical patent/EP0733735A2/en
Publication of EP0733735A3 publication Critical patent/EP0733735A3/en
Application granted granted Critical
Publication of EP0733735B1 publication Critical patent/EP0733735B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • 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
    • D21F1/08—Regulating consistency

Landscapes

  • Paper (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

A wet end section of a paper machine has a distributor with several outlets, into which is fed the main stream of a pulp suspension, the outlets being connected via part-stream lines to a machine-width flow chamber which has a machine-width delivery nozzle. The part-stream lines are connected (directly or indirectly) to the flow chamber. At least one rotating sheet-forming screen is mounted downstream from the nozzle, the screen being provided with at least one receiver trough and opt. a screen water tank for the water collected in the trough. Dilution water lines for injecting the screen water into the part-stream lines in order to adjust the pulp density. The dilution lines are connected directly to the receiver trough or the pipeline system of the screen water tank, and/or the dilution water lines or the main stream lines or the part-stream lines are provided with inlets for chemicals such as retention aids or for additional pulp suspensions and fine-substance suspensions.
EP96102508A 1995-03-20 1996-02-20 Wet end of a papermachine Expired - Lifetime EP0733735B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509522A DE19509522C2 (en) 1995-03-20 1995-03-20 Wet section of a paper machine
DE19509522 1995-03-20

Publications (3)

Publication Number Publication Date
EP0733735A2 EP0733735A2 (en) 1996-09-25
EP0733735A3 true EP0733735A3 (en) 1998-01-14
EP0733735B1 EP0733735B1 (en) 2001-01-24

Family

ID=7756830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102508A Expired - Lifetime EP0733735B1 (en) 1995-03-20 1996-02-20 Wet end of a papermachine

Country Status (4)

Country Link
US (1) US5958189A (en)
EP (1) EP0733735B1 (en)
AT (1) ATE198917T1 (en)
DE (2) DE19509522C2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627669C2 (en) * 1996-07-10 2001-03-01 Stora Enso Publication Paper A Process for improving printing paper
FI115646B (en) * 1996-11-26 2005-06-15 Metso Paper Inc Multi-layer inlet box for paper machine / cardboard machine
US6113741A (en) * 1996-12-06 2000-09-05 Eka Chemicals Ab Process for the production of paper
FI971126A (en) * 1997-03-18 1998-09-19 Valmet Corp Paper machine headbox dilution water treatment and circulation system
DE19736047A1 (en) 1997-08-20 1999-02-25 Voith Sulzer Papiermasch Gmbh Device and method for controlling or regulating the basis weight of a paper or cardboard web
FI103822B (en) * 1998-06-16 1999-09-30 Valmet Corp A method for optimizing flocking
EP0969142B1 (en) 1998-06-29 2004-03-24 Voith Paper Patent GmbH Process and device for mixing stock suspensions
DE19859770A1 (en) * 1998-06-29 1999-12-30 Voith Sulzer Papiertech Patent Method and device for mixing suspension of substances
DE19830600A1 (en) 1998-07-09 2000-01-13 Voith Sulzer Papiertech Patent Mixing and recirculation cycle
DE19843728A1 (en) 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Method and device for keeping the low consistency strand of a headbox system clean
FI116078B (en) 1998-12-30 2005-09-15 Metso Paper Inc Method of feeding pulp into an inlet box
DE19922817A1 (en) * 1999-05-19 2000-11-23 Voith Sulzer Papiertech Patent Device and method for controlling or regulating the basis weight of a paper or cardboard web
US6270625B1 (en) * 1999-06-29 2001-08-07 The Mead Corporation Method for manufacturing colored stripped paper
DE29916787U1 (en) * 1999-09-23 1999-12-30 Voith Sulzer Papiertechnik Patent GmbH, 88213 Ravensburg Device for guiding white water from a paper machine
FI109712B (en) * 2000-09-14 2002-09-30 Metso Paper Inc Method and apparatus for fractionation of pulp in a paper or board machine
PL1987329T3 (en) 2006-02-01 2011-12-30 Astenjohnson Inc Headbox and stock delivery system for a papermaking machine
US8715466B1 (en) * 2012-10-19 2014-05-06 Theodore Caouette Method and system for reducing water loss in a paper mill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239647A1 (en) * 1992-11-26 1994-06-01 Voith Gmbh J M Paper making stock inlet - takes return feed of collected water from sections of press sections at stock inlet to control paper weight profile
EP0600251A1 (en) * 1992-11-05 1994-06-08 J.M. Voith GmbH Process for uniforming the composition of a paper web

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296066A (en) * 1963-11-13 1967-01-03 Black Clawson Co Headbox for papermaking machine and stock distributor thereto
GB1179847A (en) * 1966-09-01 1970-02-04 St Annes Board Mill Co Ltd Flowbox
US4021295A (en) * 1975-05-05 1977-05-03 Beloit Corporation Method and apparatus for supplying white water from a single silo in the formation of a multi-ply web
DE3028186C2 (en) * 1980-07-25 1982-07-08 J.M. Voith Gmbh, 7920 Heidenheim Headbox for paper machines
SE428811B (en) * 1981-12-03 1983-07-25 Karlstad Mekaniska Ab PROCEDURE AND DEVICE FOR PREPARING A MULTILAYER PAPER COAT
DE4211291C3 (en) * 1992-04-03 2001-06-07 Voith Gmbh J M Mixing device and method for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine
DE4402273C2 (en) * 1994-01-27 1995-11-23 Voith Gmbh J M Paper machine for the production of multilayer paper webs
US5505819A (en) * 1994-03-31 1996-04-09 Macmillan Bloedel Limited Neutral papermaking

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600251A1 (en) * 1992-11-05 1994-06-08 J.M. Voith GmbH Process for uniforming the composition of a paper web
DE4239647A1 (en) * 1992-11-26 1994-06-01 Voith Gmbh J M Paper making stock inlet - takes return feed of collected water from sections of press sections at stock inlet to control paper weight profile

Also Published As

Publication number Publication date
US5958189A (en) 1999-09-28
ATE198917T1 (en) 2001-02-15
DE19509522C2 (en) 1999-03-11
DE59606354D1 (en) 2001-03-01
DE19509522A1 (en) 1996-09-26
EP0733735B1 (en) 2001-01-24
EP0733735A2 (en) 1996-09-25

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