EP0690167B1 - Sektionale Stoffzuführung des Stoffauflaufs einer Papiermaschine - Google Patents

Sektionale Stoffzuführung des Stoffauflaufs einer Papiermaschine Download PDF

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Publication number
EP0690167B1
EP0690167B1 EP95108955A EP95108955A EP0690167B1 EP 0690167 B1 EP0690167 B1 EP 0690167B1 EP 95108955 A EP95108955 A EP 95108955A EP 95108955 A EP95108955 A EP 95108955A EP 0690167 B1 EP0690167 B1 EP 0690167B1
Authority
EP
European Patent Office
Prior art keywords
line
main
secondary line
main line
stock suspension
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.)
Expired - Lifetime
Application number
EP95108955A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0690167A3 (de
EP0690167A2 (de
Inventor
Albrecht Dr. Meinecke
Helmut Heinzmann
Wolfgang Ruf
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 Paper Patent 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0690167A2 publication Critical patent/EP0690167A2/de
Publication of EP0690167A3 publication Critical patent/EP0690167A3/de
Application granted granted Critical
Publication of EP0690167B1 publication Critical patent/EP0690167B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F1/08—Regulating consistency
    • 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

Definitions

  • the invention relates to a method for sectional Supply of the headbox of a paper machine with Stock suspension and a device for Execution of the procedure.
  • a headbox is also a Paper machine known that across the machine width distributed a variety of material feeds become. Furthermore, the properties of the Stock suspension in the individual feed lines or Channels each by mixing two Material suspension flows with different properties and different throughput influenced by a Angle for feeding the second suspension stream into the first suspension stream is used, under which there is no Change in the total current of both partial flows results, regardless of their ratio. Requirement is that after the mixing point a relatively strong Throttle is provided. This throttle becomes variable executed, so there is in addition to influencing Density of the total current also the possibility of Total flow with respect to the sectional flow rate influence.
  • the invention has for its object a method and a device for sectional supply of the Headbox of a paper machine with stock suspension which opens up the possibility of the Volume flow between stock suspension distributor and Influence the headbox so that none Fiber wiping occur.
  • FIG. 1 schematically shows a sectional material feed (from the top view) known from WO 88/01318 for a headbox in which the sections S i of the headbox STA - with the vestibule VR, the turbulence-generating area TB and the downstream outlet nozzle DS - are fed from a common distributor via lines L i with stock suspension.
  • Throttles DR i are provided in the lines L i , which make it possible to individually adjust the sectional volume flows in order, for example, to achieve an improved fiber orientation cross profile.
  • FIG. 2 shows a sectional feed system known from DE 40 19 593 (in side view), in which stock suspension is fed from a distributor VT 1 via main lines L1 i to a large number of mixers M i via throttle valves DR1 i .
  • a material suspension of different concentration for example dilution water, is fed into the mixer M i from a further distributor VT i via secondary lines L2 i , regulated by throttles DR2 i .
  • the supply of the individual partial volume flows of the lines L1 i and L2 i is regulated via the throttles DR1 i and DR2 i , so that both the concentration and the amount of the total volume flow can be set as described in the abovementioned application.
  • FIG. 3 shows a sectional material feed (known from DE 42 11 291) (in side view) in which the material suspension is fed from a distributor VT 1 via main lines L1 i to a large number of mixers M i .
  • a material suspension of different concentrations for example dilution water, is fed into the mixer M i from a further distributor VT i via secondary lines L2 i in a controlled manner by throttle valves DR1.
  • the supply via the secondary lines L2 i are, as described in the above-mentioned application, initiated at an angle ⁇ o at which there is no change in the total volume flow after the mixers when the current supplied via the secondary lines L2 i changes .
  • the following throttle DR2 i which is necessary here, must be made adjustable.
  • Figure 4 shows the sectional feed according to the invention with a previous mixer. Similar to FIGS. 2 and 3, two distributors VT 1 and VT 2 are provided, the distributor VT 1 substance suspension containing normal concentration, while dilution liquid with only a low concentration or without fibrous material components is supplied via the distributor VT 2 .
  • high concentration stock suspension is fed from the distributor VT 1 to the mixer M i via main lines L1 i .
  • the mixer M i the stock suspension is fed in the desired manner via supply of dilution liquid (e.g.
EP95108955A 1994-06-30 1995-06-10 Sektionale Stoffzuführung des Stoffauflaufs einer Papiermaschine Expired - Lifetime EP0690167B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4422907 1994-06-30
DE4422907A DE4422907C2 (de) 1994-06-30 1994-06-30 Sektionale Stoffzuführung des Stoffauflaufs einer Papiermaschine

Publications (3)

Publication Number Publication Date
EP0690167A2 EP0690167A2 (de) 1996-01-03
EP0690167A3 EP0690167A3 (de) 1997-03-19
EP0690167B1 true EP0690167B1 (de) 2004-08-18

Family

ID=6521900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108955A Expired - Lifetime EP0690167B1 (de) 1994-06-30 1995-06-10 Sektionale Stoffzuführung des Stoffauflaufs einer Papiermaschine

Country Status (7)

Country Link
US (1) US5683551A (sv)
EP (1) EP0690167B1 (sv)
JP (1) JPH08170291A (sv)
AT (1) ATE274099T1 (sv)
CA (1) CA2152830A1 (sv)
DE (2) DE4422907C2 (sv)
FI (1) FI113554B (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036126A1 (de) * 1997-02-14 1998-08-20 Voith Sulzer Papiermaschinen Gmbh Vorrichtung und verfahren zur bildung einer papierstofflage
DE19718034A1 (de) * 1997-04-29 1998-11-05 Voith Sulzer Papiermasch Gmbh Stoffauflauf mit Dämpfungsverteiler
US5904809A (en) * 1997-09-04 1999-05-18 Ahlstrom Paper Group Oy Introduction of fiber-free foam into, or near, a headbox during foam process web making
DE19843728A1 (de) * 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Reinhaltung beziehungsweise Reinigung des Niederkonsistenzstrangs eines Stoffauflaufsystems
DE19843729A1 (de) 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Verbesserung des Schrumpfungs-Querprofils
DE19906062A1 (de) * 1999-02-12 2000-08-17 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Herstellung einer Materialbahn
DE19908898A1 (de) 1999-03-02 2000-09-07 Voith Sulzer Papiertech Patent Verfahren zur Zudosierung eines fluiden Mediums in einen Suspensionsstrom eines Stoffauflaufes und Stoffauflauf
FI119559B (sv) * 2007-06-01 2008-12-31 Upm Kymmene Corp Förfarande för behandling av massa

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965579A (en) * 1932-08-19 1934-07-10 Bird Machine Co Method of and apparatus for preparing pulp stock for delivery to a paper-making machine
US2931503A (en) * 1953-04-21 1960-04-05 Clark & Vicario Corp Conditioning paper-making stock
US3271341A (en) * 1961-08-07 1966-09-06 Du Pont Aqueous colloidal dispersions of polymer
DE1561697A1 (de) * 1967-04-15 1970-10-01 Voith Gmbh J M Verfahren zum kontinuierlichen Verduennen und/oder Mischen von langen,zum Verspinnen neigende Fasern enthaltenen Suspensionen und Vorrichtung zum Durchfuehren dieses Verfahrens
AT376251B (de) * 1980-12-19 1984-10-25 Escher Wyss Gmbh Einrichtung zur beschickung eines mehrlagen-stoffauflaufes fuer papiermaschinen
DE3514554C3 (de) * 1984-09-19 1998-01-08 Escher Wyss Gmbh Stoffauflauf-Vorrichtung für eine Papiermaschine und Verfahren zu deren Betrieb
DE3628699A1 (de) * 1986-08-23 1988-03-03 Voith Gmbh J M Stoffauflauf
DE3639823A1 (de) * 1986-11-21 1988-06-01 Voith Gmbh J M Stoffauflauf fuer papiermaschinen od.dgl.
DE3741603A1 (de) * 1987-12-09 1989-06-22 Voith Gmbh J M Stoffauflauf fuer eine papiermaschine od.dgl.
US4954249A (en) * 1988-06-10 1990-09-04 Beloit Corporation Wave screen plate
DE4019593C2 (de) * 1990-06-20 1994-01-20 Voith Gmbh J M Stoffauflauf für Papiermaschinen
US5196091A (en) * 1991-10-29 1993-03-23 Beloit Technologies, Inc. Headbox apparatus with stock dilution conduits for basis weight control
DE4211291C3 (de) * 1992-04-03 2001-06-07 Voith Gmbh J M Mischeinrichtung und Verfahren zum Mischen von zwei Flüssigkeiten bei konstantem Gemischvolumenstrom zur Versorgung des Stoffauflaufs einer Papiermaschine
DE9205637U1 (de) * 1992-04-25 1992-06-11 J.M. Voith Gmbh, 7920 Heidenheim Stoffauflauf zur Herstellung einer Papierbahn mit variabler Eindüsung
DE4234940C2 (de) * 1992-10-16 1994-04-07 Voith Gmbh J M Stoffauflauf mit Flächengewichts-Querprofilregelung durch lokale Konzentrationsänderung
DE4316054C2 (de) * 1993-05-13 1995-11-23 Voith Gmbh J M Stoffauflauf einer Papiermaschine

Also Published As

Publication number Publication date
FI953228A0 (sv) 1995-06-29
DE4422907C2 (de) 1997-03-06
EP0690167A3 (de) 1997-03-19
DE59510935D1 (de) 2004-09-23
US5683551A (en) 1997-11-04
EP0690167A2 (de) 1996-01-03
CA2152830A1 (en) 1995-12-31
DE4422907A1 (de) 1996-01-11
ATE274099T1 (de) 2004-09-15
JPH08170291A (ja) 1996-07-02
FI953228A (sv) 1995-12-31
FI113554B (sv) 2004-05-14

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