EP2524083A1 - Dispositif pour une section de formation de film d'une machine de film de fibres - Google Patents

Dispositif pour une section de formation de film d'une machine de film de fibres

Info

Publication number
EP2524083A1
EP2524083A1 EP11732703A EP11732703A EP2524083A1 EP 2524083 A1 EP2524083 A1 EP 2524083A1 EP 11732703 A EP11732703 A EP 11732703A EP 11732703 A EP11732703 A EP 11732703A EP 2524083 A1 EP2524083 A1 EP 2524083A1
Authority
EP
European Patent Office
Prior art keywords
deckle
liner
fabric
water supply
water
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Withdrawn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
EP11732703A
Other languages
German (de)
English (en)
Other versions
EP2524083A4 (fr
Inventor
Tuomo Juvakka
Tero PÄRSSINEN
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
Publication of EP2524083A1 publication Critical patent/EP2524083A1/fr
Publication of EP2524083A4 publication Critical patent/EP2524083A4/fr
Withdrawn legal-status Critical Current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
    • D21F1/56—Deckle frame arrangements
    • 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 device for a web forming section of a fiber web machine, the device being a deckle liner adaptable to a fabric of a web forming section for supporting the stock layer, and the deckle liner including water supply means arranged on the fabric side, i.e., on the bottom surface of the deckle liner, for supplying water between the deckle liner and the fabric.
  • Deckle boards are used in a web forming section of a web forming machine for supporting the stock layer supplied to the web forming section and for preventing its spreading outside the fabric.
  • a water jet is used to define the spreading of stock.
  • Prior art is represented by the European patent publication FIEP 1740766 registered in Finland wherein one such deckle liner operating by means of a water jet is proposed.
  • this deckle liner water is sprayed between the fabric and the deckle liner as well as between the deckle liner and the stock layer. This device is fixedly supported to the constructions of the web forming section.
  • Lamellas are installed on the bottom surface of the deckle liner to improve the sealing of the gap between the fabric and the deckle liner.
  • a problem with the above technique is that when supplying water both to the side of the deckle liner and below it, the water consumption becomes substantial.
  • the lamellas on the bottom surface of the deckle liner are exposed to contacts with the fabric and become easily worn while simultaneously wearing the fabric.
  • a fixed fastening to the web forming section complicates the use of an adjustable headbox of a web forming section in connection with such a deckle liner.
  • the object of the invention is to provide a device for a web forming section of a fiber web machine which device eliminates at least part of the above mentioned problems.
  • This object can be achieved according to the invention by-adapting at least part of the water supply means arranged on the bottom surface of the deckle liner to be followed by a substantially planar sliding surface in the travel direction of the fabric.
  • the bottom surface of the deckle liner i.e., the fabric side of the deckle liner, includes at least one water supply area.
  • the water supply area may include at least one recess for distributing water uniformly between the bottom surface of the deckle liner and the fabric, as well as water supply means for supplying water or a similar medium to the recess .
  • the water supply area is followed by at least one sliding plane area in the travel direction of the fabric, on the bottom surface of the deckle liner.
  • the sliding plane area is mainly planar sliding surface and it is adapted to create at the deckle liner, together with water coming from the water supply area, buoyancy which is as high as the weight of the deckle liner.
  • the water supplied spreads, due to pressure and the fabric movement, to the sliding plane area at the deckle liner bottom and is conveyed along with the moving fabric below the planar sliding plane area to form a water film on which the deckle liner "slides".
  • the surface of the at least one recess on the bottom surface of the deckle liner may form a "ski tip", which facilitates maintaining the deckle liner on the water film.
  • the pressure of the water supplied compensates for the pressure generated by the mass of the deckle liner. Water supplied in the water supply area serves as sealing water keeping the fiber stock away from below the deckle liner while the deckle liner simultaneously supports the stock layer by its flank.
  • Fastening of the device according to the invention is implemented in such a way that it facilitates the positioning of the device so that the gap between the deckle liner and the fabric becomes sealed with water and prevents lateral spreading of the stock layer on the fabric.
  • the fastening of the deckle liner and its "sliding" on the water film prevent the contact between the fabric and the deckle liner, which remarkably reduces the wear of the fabric and the deckle liner.
  • one end of the device is connected to the end plate of a headbox of a web forming machine by means of double pivoting.
  • double pivoting one pivot is connected to the headbox end plate, the other one is connected to the deckle liner, and the pivots are linked with a linking element.
  • double pivoting it is possible to use an angle-adjustable headbox in which the tilt angle can be adjusted.
  • the deckle liner moves only in the travel direction of the fabric or against it such that its position relative to the fabric remains the same at all times and it is not necessary to remove it while performing position adjustments for the headbox.
  • Sealing of the deckle liner is performed only in the gap between the deckle liner and the fabric, which reduces the water consumption compared to devices according to prior art. Due to the fabric movement speed and the deckle liner, the sealing water barely penetrates the fabric but continues as a wake current on the fabric even after passing by the deckle liner. This is partly influenced by the amount of water which remains relatively small.
  • a device according to the invention for a web forming section of fiber web machine is advantageously suitable for use in paper and board machines but also in other similar applications , such as in pulp and tissue machines .
  • Figure 1 is an axonometric view of an embodiment of a deckle liner seen from the direction of its set- ting against the fabric
  • Figure 2 I s an axonometric, lateral view of the deckle liner of Figure 1 ,
  • Figure 3 is a top view of one embodiment for fastening a deckle liner in a web forming section
  • Figure 4 is a lateral view of the device of Figure 3
  • Figure 5 is a cross-sectional, lateral view of the deckle liner of Figure 2.
  • Figure 1 is an axonometric view of a device according to the invention for a web forming section of a fiber web machine.
  • the device 10 is a deckle liner 12 adaptable to a fabric of a web forming section, one purpose of the device being to support the stock layer 36 (Figure 3).
  • the deckle liner 12 includes water supply means 18 arranged on the fabric side 15, i.e., on the bottom surface 15 of the deckle liner 12, for supplying water between the deckle liner 12 and the fabric. At least part of the water supply means 18 is adapted to be followed by a substantially planar sliding surface 38 in the travel direction 60 of the fabric 14 ( Figures 3, 4 and 5) .
  • the fabric side 15 of the deckle liner 12 is practically the bottom surface 15 of the deckle liner 12.
  • Figure 1 also depicts a groove 27, according to an embodiment, made on the bottom surface 15 of the deckle liner 12, which groove is not mandatory in the implementation of all embodiments.
  • the deckle liner is made, for example, of plastic or a similar material suitable for the application, such as a composite material or even steel.
  • the deckle liner 12 is machined or cast to form a rectangular beam which includes water supply means 18.
  • These water supply means 18 include at least one water supply area 22 comprising, according to one embodiment, at least one recess 20 for distributing water uniformly between the deckle liner 12 and the fabric.
  • connection means 21 ( Figure 2) are adapted to the deckle liner 12 for supplying water to the recess 20.
  • the recess 20 may have one or more water supply points 39 with which water is discharged to the recess 20.
  • the recesses 20 are so designed that water supplied to these by means of the water supply points 39 included in the connection means 21 is uniformly distributed to the bottom 15 of the deckle liner 12 to form a uniform and relatively thin water film.
  • the term uniform refers to that water is distributed to the main part of the width of the bottom surface 15 of the deckle liner 12.
  • the water supply means 18 include a recess 20 and water supply points 39 adapted thereto from which sealing water is supplied to the recess 20.
  • the water of the water supply points 39 comes along the connection means 21 through the deckle liner 12 as shown in Figures 1 and 5.
  • connection means include, for example, sleeves 34 connected to the upper surface 23 of the deckle liner and bores 33 ( Figure 5) located inside the deckle liner 12, which extend to the water supply points 39 in the recesses 20.
  • the water supply points may be oriented according to the travel direction of the fabric but also perpendicularly to the fabric, inclined rela- tive to the travel direction of the fabric, or even opposite to the travel direction of the fabric.
  • the number of the water supply points can vary from one to several depending, for example, on the amount of water supplied and the volume of the recess .
  • the recesses can have a width ranging from 50 to 95% of the width of the deckle liner, a depth in the range of 0.1 cm to 4.0 cm, and a length in the range of 1.0 to 9.0 in the longitudinal extension of the deckle liner.
  • the recess 20 is so designed that the depth of the recess 20 reduces in the travel direction 60 of the fabric 14 and has advantageously a key-like shape.
  • the water supply points can also be connected as a water supply incision.
  • the water supply means 18 can include water supply points 39 without a recess adapted to that surface of the deckle liner 12 which sets against the fabric 14. Like the recess, the water supply points can be in an arrangement along the width direction of the deckle liner 12 or even inclined relative to the longitudinal direction of the deckle liner 12. A mixed design including both recesses and points is of course also possible.
  • the surfaces of the recesses 20 can be oriented in an angle relative to the plane of the bottom surface 15 of the deckle liner 12, this angle functioning as a kind of a "ski tip" for the water flowing below the bottom surface 15 of the deckle liner 12, i.e., water coming from a previous recess 20 in the travel direction of the fabric 14 creates a pressure against the following recess 20, which pressure serves as a lifting force for the deckle liner 12.
  • the surfaces of the deckle liner 12 are mainly smooth and non-porous .
  • the deckle liner can have a length in the range of 0.5 to 7 meters, for example.
  • the deckle liner can extend almost from the headbox almost to the dry limit.
  • the height and thickness of the deckle liner are determined according to the application.
  • water supply areas are adapted to the deckle liner at predetermined intervals.
  • the total number of the water supply areas can be determined according to the total length of the deckle liner.
  • water supply areas can be at intervals of 10 to 50 cm on the bottom surface of the deckle liner.
  • the mutual distance between the water supply areas can vary according to the weight, length and width of the deckle liner as well as the amount of water supplied, and the distance can be separately defined according to the application.
  • the deckle liner 12 includes at least one sliding plane area 24 which is mainly planar sliding surface 38.
  • the sliding plane area 24 is adapted to form at the deckle liner 12 , together with water coming from the water supply area 22, buoyancy which is as high as the weight of the deckle liner 12.
  • the movement of the fabric creates a water film between the deckle liner and the fabric.
  • the water film lifts the deckle liner 12 to a "slide", i.e., the deckle liner 12 is on the water film without contacting the fabric 14.
  • the portion of the surface area of the sliding plane area 24 from the total area of the bottom surface 15 of the deckle liner 12 ranges from 50 to 95%.
  • the planar sliding plane area 24 does not wear either the fabric 14 or the deckle liner 12. Moreover, with the planar sliding plane area 24, the thickness of the water film remains very thin, whereby the amount of water required remains small. In addition, a small amount of water does not affect the edge area of the formed stock layer, which may have influence on the quality of the final product produced from the edge area.
  • a device according to the invention is advantageously connected with vertical pins at its ends, which vertical pins enable the vertical movement of the deckle liner but prevent the deckle liner from moving in the transverse direction relative to the travel direction of the fabric.
  • Figure 3 shows one possibility of fastening the deckle liner 12 to the headbox 28.
  • This fastening according to the embodiment is based on double pivoting which is surprising for one part, enabling the use of the deckle liner 12 also in adjustable headboxes.
  • an arrangement 30 is adapted to that side 23 of the deckle liner 12 according to this embodiment which is opposite to the side 15 setting against the fabric 14, for fastening the deckle liner 12 to the web forming section 11, which arrangement 30 is adapted to eliminate the transverse movement of the deckle liner 12 and to allow the vertical movement of the deckle liner 12.
  • the arrangement 30 can consist of pins which allow the vertical movement of the deckle liner 12 with the movement of the fabric 14 but keep the deckle liner 12 in place in the transverse direction.
  • the arrangement 30 enables for the deckle liner 12 to "float" on the water film during the operation.
  • the deckle liner 12 includes double pivoting 26 which allows the machine directional movement of the deckle liner 12 for adapting the deckle liner 12 to an adjustable headbox 28 of a fiber web machine.
  • double pivoting 26 can be implemented with one pivot point 42 connected to the headbox 28, one pivot point 44 connected to the deckle liner 12 and a linking element 40 that links the pivot points 42 and 44.
  • the deckle liner 12 is double-pivoted to the end plate 46 of the headbox 28.
  • the end plate 46 of the headbox 28 can be provided, for example, with a fastening beam 48 having a width equal to that of the deckle liner 12.
  • Figure 4 shows a lateral view of a floating double pivot assembly 26.
  • the position of the pivot 42 changes. The change may take place in the vertical direction but also in the travel direction of the fabric 14 or against it.
  • the linking element 40 also moves the pivot 44 which is fastened to the deckle liner 12. Due to the double pivoting 26, the pivot 44 moves only in the travel direction of the fabric 14 or against it, i.e., only in the longitudinal direction of the deckle liner.
  • the deckle liner 12 is always kept in the correct position relative to the fabric regardless of the movement. This allows making adjustments for an adjustable headbox 28 without removing the deckle liner 12 from the headbox.
  • sealing of the gap between the deckle liner 12 and the fabric 14 can be improved with an arrangement in which at least one water supply area 22 is adapted to be followed by a groove 27 in the longitudinal direction of the deckle liner 12, as shown in Figure 1.
  • the groove 27 is filled with water coming from the water supply area 22 and seals the gap further.
  • the width of the groove is narrow relative to the width of the bottom surface 15 of the deckle liner 12 such that the main part of the bottom surface 15 is still planar sliding surface 38.
  • the groove is located on the bottom surface of the deckle liner, on the stock layer side of the bottom surface, such that the bottom surface of the deckle liner located in the edge side part of the fabric is planar sliding surface.
  • the water supply means 18 can include discrete water supply points 39 without a recess adapted to that surface of the deckle liner 12 which sets against the fabric 14. Like the recess, the water supply points can be in an arrangement along the width direction of the deckle liner 12 or even inclined relative to the longitudinal direction of the deckle liner 12.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)

Abstract

L'invention porte sur un dispositif (10) pour une section de formation de film d'une machine de film de fibres, lequel dispositif est un dispositif de chemisage à limitation de format (12) adaptable à un tissu (14) d'une section de formation de film (11) pour supporter la couche de matière première, et le dispositif de chemisage à limitation de format (12) comprenant des moyens d'alimentation en eau (18) disposés sur le côté (15) de tissu (14), ou, autrement dit, sur la surface inférieure (15) du dispositif de chemisage à limitation de format (12), pour délivrer de l'eau entre le dispositif de chemisage à limitation de format (12) et le tissu (14). Au moins une partie des moyens d'alimentation en eau (18) est adaptée de façon à être suivie par une surface de coulissement sensiblement plane (38) dans la direction de déplacement (60) du tissu (14).
EP11732703.1A 2010-01-15 2011-01-05 Dispositif pour une section de formation de film d'une machine de film de fibres Withdrawn EP2524083A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20105026A FI20105026A (fi) 2010-01-15 2010-01-15 Laite kuiturainakoneen rainanmuodostusosaa varten
PCT/FI2011/050003 WO2011086231A1 (fr) 2010-01-15 2011-01-05 Dispositif pour une section de formation de film d'une machine de film de fibres

Publications (2)

Publication Number Publication Date
EP2524083A1 true EP2524083A1 (fr) 2012-11-21
EP2524083A4 EP2524083A4 (fr) 2013-05-29

Family

ID=41620864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11732703.1A Withdrawn EP2524083A4 (fr) 2010-01-15 2011-01-05 Dispositif pour une section de formation de film d'une machine de film de fibres

Country Status (4)

Country Link
EP (1) EP2524083A4 (fr)
CN (1) CN102713056A (fr)
FI (1) FI20105026A (fr)
WO (1) WO2011086231A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110016830B (zh) * 2019-04-16 2023-06-20 华南理工大学 一种斜网成型器用的非接触式密封装置及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899376A2 (fr) * 1997-08-29 1999-03-03 Voith Sulzer Papiermaschinen Gesellschaft mbH Chariot de format pour une section de formage
WO2002095124A1 (fr) * 2001-05-23 2002-11-28 Metso Paper, Inc. Dispositif permettant de reguler la rive d'une masse de pate a papier dans une machine a fabriquer des feuilles continues de papier et procede de regulation de ladite rive
EP1740766B1 (fr) * 2004-03-25 2007-09-26 Process Flow Ltd Oy Appareil et procede pour une machine a papier
EP2060675A2 (fr) * 2007-11-19 2009-05-20 Andritz AG Procédé de formation de feuille et partie humide destinés à la fabrication d'une bande de matière fibreuse
DE102008059681A1 (de) * 2007-12-03 2009-06-04 Metso Paper, Inc. Randbegrenzung zum Einsatz in einer Materialbahn-Herstellungsmaschine und Verfahren zur Herstellung einer Randbegrenzung für eine Materialbahn-Herstellungsmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116796B (fi) * 2005-01-14 2006-02-28 Vaahto Oy Laitteisto paperi- tai kartonkikoneessa perälaatikosta tulevan massavirtauksen rajoittamiseksi
FI120205B (fi) * 2007-03-28 2009-07-31 Vaahto Oy Menetelmä ja laitteisto paperi- tai kartonkikoneessa perälaatikosta tulevan massavirtauksen rajoittamiseksi

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899376A2 (fr) * 1997-08-29 1999-03-03 Voith Sulzer Papiermaschinen Gesellschaft mbH Chariot de format pour une section de formage
WO2002095124A1 (fr) * 2001-05-23 2002-11-28 Metso Paper, Inc. Dispositif permettant de reguler la rive d'une masse de pate a papier dans une machine a fabriquer des feuilles continues de papier et procede de regulation de ladite rive
EP1740766B1 (fr) * 2004-03-25 2007-09-26 Process Flow Ltd Oy Appareil et procede pour une machine a papier
EP2060675A2 (fr) * 2007-11-19 2009-05-20 Andritz AG Procédé de formation de feuille et partie humide destinés à la fabrication d'une bande de matière fibreuse
DE102008059681A1 (de) * 2007-12-03 2009-06-04 Metso Paper, Inc. Randbegrenzung zum Einsatz in einer Materialbahn-Herstellungsmaschine und Verfahren zur Herstellung einer Randbegrenzung für eine Materialbahn-Herstellungsmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011086231A1 *

Also Published As

Publication number Publication date
FI20105026A (fi) 2011-07-16
WO2011086231A1 (fr) 2011-07-21
FI20105026A0 (fi) 2010-01-15
CN102713056A (zh) 2012-10-03
EP2524083A4 (fr) 2013-05-29

Similar Documents

Publication Publication Date Title
USRE43679E1 (en) Adjustable activity drainage box
US3337394A (en) Foil type drainage apparatus for paper making machines
US6126786A (en) Apparatus and method of generating stock turbulence in a fourdrinier forming section
USRE40720E1 (en) Fabric support element for a papermaking machine
AU779599B2 (en) Twin fabric forming section blade mounting
US8236139B1 (en) Apparatus for improving basis weight uniformity with deckle wave control
WO2011070229A1 (fr) Racle pour une machine de formation de voile de carde et agencement de raclage dans une machine de formation de voile de carde
WO2011086231A1 (fr) Dispositif pour une section de formation de film d'une machine de film de fibres
CA2587706A1 (fr) Machine a papier a formeur double toile a sabot d'incidence a enveloppement variable
CA2107990C (fr) Couverte de machine a papier protegee par un film d'eau
US4088531A (en) Dewatering device for the wire section of a paper or board machine
FI94269B (fi) Menetelmä ja sovitelma kaavinterän kuormittamiseksi
CA2328543C (fr) Element de chargement pour la latte essoreuse d'une toile de formation de bande
AU745683B2 (en) Apparatus and method of generating stock turbulence in a fourdrinier forming section
AU2003208234B2 (en) Fabric support element for a papermaking machine
FI80740B (fi) Anordning foer formning av en pappersbana.
CN112739870B (zh) 脱水设备
EP0967323A3 (fr) Section de formage à deux toiles
US6984291B2 (en) Vacuum box with skimmer blade
US6106672A (en) Adjustable height forming blade apparatus
KR100800438B1 (ko) 제지기용 직물 지지요소
ZA200507242B (en) Fabric support element for a papermaking machine
WO2008093000A1 (fr) Appareil de surpression

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120626

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20130425

RIC1 Information provided on ipc code assigned before grant

Ipc: D21F 1/56 20060101AFI20130419BHEP

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VALMET TECHNOLOGIES, INC.

17Q First examination report despatched

Effective date: 20140422

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150226