EP1285991A2 - Dispositif pour le traitement d'une bande fibreuse - Google Patents

Dispositif pour le traitement d'une bande fibreuse Download PDF

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Publication number
EP1285991A2
EP1285991A2 EP02011795A EP02011795A EP1285991A2 EP 1285991 A2 EP1285991 A2 EP 1285991A2 EP 02011795 A EP02011795 A EP 02011795A EP 02011795 A EP02011795 A EP 02011795A EP 1285991 A2 EP1285991 A2 EP 1285991A2
Authority
EP
European Patent Office
Prior art keywords
sealing
blade
sealing blade
support band
vacuum
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Withdrawn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
EP02011795A
Other languages
German (de)
English (en)
Other versions
EP1285991A3 (fr
Inventor
Peter Kahl
Uwe Joos
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 EP1285991A2 publication Critical patent/EP1285991A2/fr
Publication of EP1285991A3 publication Critical patent/EP1285991A3/fr
Withdrawn legal-status Critical Current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
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D21F5/046—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using pocket ventilation systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a device for treating a fibrous web such as in particular a paper and / or cardboard web in which the fibrous web alone or together with at least one support band like in particular a drainage belt, press belt, screen belt and / or The like guided over at least one moving or stationary support surface is and on the side facing away from such a support surface Fibrous web at least one sealing device is provided.
  • the sealing device in question is often in the field of ventilation technology Device such as in particular a stabilizer box or the like intended.
  • a stabilizer box In the upper area of such a stabilizer box an additional vacuum zone can be provided.
  • Between two vacuum zones, d. H. between the upper and lower vacuum zone can be provided in particular a seal fixed to the box his.
  • the aim of the invention is to provide a device of the type mentioned create, in which the sealing device to different operating conditions is adaptable to optimal conditions in particular in a particular ventilation equipment z. B. for transferring, spreading and the web run in operation and with different support belts, z. B. Seven to enable.
  • a device for Treatment of a fibrous web such as in particular a paper and / or Cardboard web in which the fibrous web alone or together with at least one support belt, such as in particular a drainage belt, Press belt, screen belt and / or the like via at least one moving or stationary support surface and is guided by such Support surface facing away from the fibrous web at least one Sealing device is provided, which is accommodated in a holder flexible sealing blade comprises, by a pressing device can be acted upon, via which the distance between the support band cooperating sealing portion of the sealing blade and the Support band is variably adjustable.
  • the distance between the support band, z. B. a sieve, and the sealing portion of the formed by a sealing blade Sealing element in particular without removal or displacement the entire ventilation system, d. H. for example the entire stabilizer box.
  • the pressure device can comprise, for example, a pressure blade. This preferably has a greater rigidity than the sealing blade.
  • the sealing device can, for example, in the Area of a particularly in a press section or a dryer section used ventilation equipment such as a steam box, a suction box, a stabilizer, ventilation internals and / or the like may be provided.
  • the sealing device in combination with one in the Dryer section attached ventilation equipment, e.g. B. a stabilizer box, considered in particular in the web running direction second seal provided across the machine width, in particular a separate upper and lower vacuum zones.
  • the Dryer section attached ventilation equipment e.g. B. a stabilizer box
  • the two vacuum zones can be separated, for example Negative pressure sources are connected, via which the negative pressure accordingly can be set separately.
  • the respective setting can be made using, for example fans or the like assigned to the vacuum sources are carried out.
  • the two vacuum zones can also be shared Vacuum source connected.
  • the pressures in the vacuum zones separated for example by flaps or the like can be set.
  • the first inlet-side seal viewed in the direction of web travel, can in particular through a flexible, floating seal, a mechanical one Sealing strip, an air knife and / or the like may be formed.
  • the sealing blade with its two opposite, edges extending transversely to the web running direction in a respective tour in which the concerned Edge sections of the sealing blade are movable to a limited extent by a respective when adjusting the distance between the sealing portion of the Sealing blade and the support band occurring displacement of the concerned To compensate or allow edge sections.
  • the guides can each at least essentially overlap the total width of the sealing blade measured transversely to the web running direction extend.
  • the guides are each designed like a channel and the channel walls each with a Provide slot parallel to the channel axis through which the respective edge section of the sealing blade in the relevant channel extends into it.
  • the sealing blade included in the guides on the edge is over the Pressure device can preferably be acted upon so that it becomes the support band is arched.
  • Device includes the pressing device except at least one Actuator at least one arranged between this and the blade Spring element.
  • the pressure device at least an actuator performing a linear actuating movement.
  • the pressing device can, for example, at least one through comprise an actuator formed lever.
  • the actuator include a two-armed lever and the sealing blade through one of the two lever arms, preferably via at least one in between switched spring element, can be acted upon.
  • the pressure device at least comprises a pressure element which is transverse to the web running direction extending axis is pivotally mounted.
  • the swiveling Pressure element can be actuated via at least one actuator.
  • a pressure element can be pivoted about a transverse axis stored pressure blade may be provided.
  • the pressing device can, for example, at least one through comprise an eccentric pressure element. It can be used as a pressure element in particular at least one transverse to the direction of web travel extending eccentric tube may be provided.
  • the sealing blade is preferably applied directly by the eccentric.
  • the pressing device comprises a pressure element provided with a crown.
  • the one in question Pressure element can thus be, for example, a positively or negatively curved one Have an edge to "crown" the sealing blade, i. H. one set different distance to the support band across the width. This can be used, for example, to deflect a support band or screen be balanced between the edge and the center.
  • the sealing device as a whole, compliant or resilient to, for example, one concerned ventilation equipment is stored. If there are chunks or The same therefore yields to the entire sealing construction.
  • the preferred avoidance direction in particular in the running direction of the support band, d. H. thus, for example, in the direction of wire travel.
  • the distance between the sealing section of the sealing blade and the Support tape is particularly in a range from about 0 to about 100 mm and preferably adjustable in a range from about 5 to 50 mm.
  • the sealing blade and / or the pressure blade preferably consists of Plastic, e.g. B. GFK, Teflon, CFK or the like, or made of metal.
  • the z. B. from GFK existing sealing blade and / or pressure blade each advantageously has a thickness in a range from about 0.2 to about 1.5 mm and preferably in a range from about 0.3 to 1.0 mm.
  • the sealing blade and the pressure blade are made of consist of the same material
  • the sealing blade is preferably thinner or the same thickness as the pressure blade.
  • the sealing blade is curved during operation and the distance between them Sealing section and the support band over the length of the z. B. also can be specified by a pressure element formed by a blade.
  • the distance between the sealing section and the support band is expediently automatically adjustable. This distance can especially depending on the machine speed, the type of paper, the operating state (e.g. demolition, transfer, spreading, operation), the humidity, the train, the pressing force and / or the like adjustable his.
  • the sealing blade can be moved as far away from the support band as possible, that the separation between the upper and lower vacuum zones is canceled and instead a single contiguous Vacuum zone is formed.
  • the vacuum in the vacuum zones is advantageously automatic adjustable and / or adjustable. It is particularly advantageous if the vacuum in the vacuum zones automatically to the respective operating status adaptable to the device, with a respective web break the vacuum source or sources can be switched off automatically and / or after a web transfer, the vacuum source or sources automatically can be switched on or regulated.
  • the sealing blade can extend over the entire machine width or also extend only over part of the machine width or in width be divided into at least two zones.
  • the two vacuum zones can be adjusted laterally using an air knife and / or mechanical Cover plates must be sealed.
  • the maximum possible adjustment range of the sealing blade or its sealing section is preferably predetermined by the sealing blade associated stops.
  • the sealing blade can be simultaneously through these stops be prevented from slipping out of the guides.
  • the sealing blade can be provided with through holes to a partial flow, e.g. B. in the area behind the sealing blade enable.
  • the holes preferably have a diameter in the region from about 5 to 50 mm.
  • Fig. 1 shows a partial schematic view of a drying party of a device for the treatment of a fibrous web with two in the area of one Dry cylinder seals provided in the upper area of a stabilizer box to form an upper and a lower vacuum zone.
  • the device in question is used to treat a fibrous web 10, which is in particular a paper and / or cardboard web can act.
  • the stabilizer box 20 can be in the present case Act case in particular to a suction box or the like. Basically, the sealing arrangement described in more detail below however also in the area of any other ventilation technology Facility, e.g. B. also be provided outside the dryer section.
  • first seal 24 is provided on the side of the fibrous web 10 facing away from the support surface 18 and the support belt 16 is in the web running direction L before the run-off area A .
  • first inlet side Sealing can be, for example, a flexible, floating one Act a seal, a mechanical sealing strip or an air knife.
  • first seal 24 is one after the drain area A arranged second seal or sealing device 26 is provided, so that there are upper and lower vacuum zones 28 and 30, respectively.
  • the upper vacuum zone 28 is suctioned off via at least one Suction channel 32 (see in particular FIGS. 2 and 3).
  • the lower vacuum zone 30 serves, among other things, to stabilize the web guide.
  • the upper vacuum zone 28 serves in particular as a so-called "ProRelease" - or detachment zone. The arrangement thus serves a controlled overall Detach and stabilize the fibrous web 10.
  • the sealing device 26 comprises a in a holder 34 (see. In particular 2 and 3) recorded sealing element, which here as flexible sealing blade 35 is executed.
  • the flexibility is Sealing blade 35 between an operating position (see FIG. 2), in the Sealing section 36 of the sealing element 34 in the immediate vicinity of the support band 16 is arranged, and a maintenance position (cf. FIG. 3) is adjustable, in which the sealing section 36 is at a greater distance from the support band 16 has.
  • the flexible sealing blade 35 received in the holder 34 is through a pressing device 11 can be acted upon, via which the distance between the cooperating with the support band 16 sealing portion 36 of Sealing blade 35 and the support band 16 is variably adjustable.
  • the Sealing blade 35 with its two opposite, transversely edges extending to the web running direction in a respective guide 37 of the holder 34 added, in which the relevant edge sections of the sealing blade 35 are movable to a limited extent by a respective when adjusting the distance between the sealing portion 36 of the Sealing blade 35 and the support band 16 occurring displacement of the relevant To compensate for edge sections, d. H. permit.
  • the sealing blade is 35 can be acted upon via the pressing device 11 so that it becomes the support band 16 is arched out and thereby assumes its operating position.
  • the pressing device 11 comprises at least one Pressure blade 38, which preferably has a greater rigidity than the sealing blade 35 owns.
  • the pressure blade 38 is in one in the present case Recess 40 of the stabilizer box 20 housed by the Sealing blade 35 is at least partially covered.
  • the pressure blade 38 is extending around a crosswise to the web running direction L. Swiveling axis. A respective pivoting can by at least one corresponding actuator in particular take place automatically.
  • FIG 4 shows a further embodiment in a schematic representation the sealing device 26.
  • the flexible sealing blade 35 can be acted upon by a pressure device 11 which is at least one Actuator 42 and at least one between it and the sealing blade 35 arranged spring element 44 includes.
  • the flexible sealing blade 35 is again so via the pressing device 11 actable that it is arched toward the support band 16.
  • the guides 37 are in the the flexible sealing blade 35 is received on the edge, each channel-like executed. They are each parallel to the channel axis Provide slot 46 through which the respective edge section extends the sealing blade 35 extends into the channel in question (cf. also 5 to 7).
  • the guides 37 can each at least essentially overlap the total width of the sealing blade measured transversely to the web running direction L. 35 extend.
  • the actuator 42 performs in the present case Fail linear actuation.
  • the pressure device 11 is again in a recess 40 of the stabilizer box 20 arranged.
  • Fig. 5 shows a schematic representation of a further embodiment of the Sealing device 26.
  • the pressing device 11 at least one actuator 48 formed by a lever 5 can be seen, it is a two-armed lever, the sealing blade 35 preferably by one of the two lever arms again can be acted upon by at least one spring element 44 connected in between is.
  • this embodiment can at least essentially have the same structure as that of Fig. 4, but corresponding to each other Parts are assigned the same reference numerals.
  • the pressing device comprises 11 at least one pressure element 50, which is transverse to one Web running direction L extending axis 52 is pivotally mounted.
  • the Swivel bearings and the pressure element 50 can in particular again be arranged in a recess 40 of the stabilizer box 20.
  • the pivotable pressure element is 50 can be actuated or pivoted via at least one actuator 54.
  • this embodiment can at least essentially again have the same structure as described above, with each other corresponding parts are assigned the same reference numerals.
  • the pressing device comprises 11 at least one pressure element formed by an eccentric 56.
  • the pressing element 56 Eccentric tube extending transversely to the web running direction L may be provided. This pressure element formed by an eccentric is about an axis 58 swiveling.
  • the flexible sealing blade 35 acted upon directly by the eccentric.
  • the pressing element formed in the present case by an eccentric 56 can at least partially again in a recess 40 of the stabilizer box 20 may be arranged.
  • this embodiment can at least essentially again have the same structure as described above. Corresponding to each other Parts are assigned the same reference numerals again.

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  • Paper (AREA)
EP02011795A 2001-08-20 2002-05-28 Dispositif pour le traitement d'une bande fibreuse Withdrawn EP1285991A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140800 2001-08-20
DE10140800A DE10140800A1 (de) 2001-08-20 2001-08-20 Vorrichtung zur Behandlung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP1285991A2 true EP1285991A2 (fr) 2003-02-26
EP1285991A3 EP1285991A3 (fr) 2004-01-02

Family

ID=7696039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011795A Withdrawn EP1285991A3 (fr) 2001-08-20 2002-05-28 Dispositif pour le traitement d'une bande fibreuse

Country Status (4)

Country Link
US (1) US7063772B2 (fr)
EP (1) EP1285991A3 (fr)
JP (1) JP2003064592A (fr)
DE (1) DE10140800A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371775A1 (fr) * 2002-06-14 2003-12-17 Voith Paper Patent GmbH Dispositif pour la stabilisation d'une bande fibreuse
EP1788153A3 (fr) * 2005-11-19 2013-07-03 Voith Patent GmbH Dispositif pour le traitement d'une bande de matériau

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7766365B2 (en) * 2001-08-24 2010-08-03 Valiant Rock LLC Wholly portable, modular, expandable, medical critical care field installation system
FI115232B (fi) * 2002-11-19 2005-03-31 Metso Paper Inc Tiivistejärjestely liikkuvaa kudosta vasten
ITVI20040114A1 (it) * 2004-05-10 2004-08-10 Comer Spa Macchina per il lavaggio di sospensioni fibrose
FI119152B (fi) * 2004-06-03 2008-08-15 Metso Paper Inc Menetelmä ja sovitelma paperikoneessa tai vastaavassa kuivatettavan, yleensä viiraa vasten tuetun liikkuvan rainan läheisyydessä, tiivistyslaite sekä paperikone
FI123824B (fi) * 2006-04-19 2013-11-15 Metso Paper Inc Rainan parannettu ajettavuus materiaalirainakoneessa
AT506409B1 (de) * 2008-06-17 2009-09-15 Andritz Ag Maschf Vorrichtung und verfahren zur überführung einer materialbahn
AT506407B1 (de) * 2008-06-17 2009-09-15 Andritz Ag Maschf Vorrichtung und verfahren zur überführung einer materialbahn
AT506408B1 (de) * 2008-06-17 2009-09-15 Andritz Ag Maschf Vorrichtung und verfahren zur überführung einer materialbahn
US9526610B2 (en) 2012-06-12 2016-12-27 Medtronic, Inc. Method and device for percutaneous valve annuloplasty
DE102021123077A1 (de) 2021-09-07 2023-03-09 Voith Patent Gmbh Verfahren und Vorrichtung zur Verbesserung des Trocknungsprozesses in einer Papiermaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI82098C (fi) * 1989-05-18 1991-01-10 Valmet Paper Machinery Inc Munstyckessystem foer en blaosningslaoda i en pappersmaskin.
DE4141296A1 (de) * 1991-12-14 1993-06-17 Voith Gmbh J M Vorrichtung zur abnahme einer bahn von einem trockenzylinder
DE19716131A1 (de) * 1997-04-17 1998-10-22 Voith Sulzer Papiermasch Gmbh Vorrichtung zur Behandlung einer Faserstoffbahn
US6192597B1 (en) * 1997-04-17 2001-02-27 Voith Sulzer Papiermaschinen Gmbh Device for treating a fibrous pulp web as well as a sealing device for a device of this kind
DE1012387T1 (de) * 1997-04-23 2001-01-11 Valmet Corp., Helsinki Blaskasten zur anwendung in der trockenpartie einer papiermaschine und verfahrenzur abdichtung der taschen versehen mit einer blaskasten in der trockenpartie einer papiermaschine
DE20017933U1 (de) * 2000-10-19 2000-12-28 Valmet Corp., Helsinki Abdichtdüse in einem Blaskasten in der Trockenpartie einer Papiermaschine
DE10140801A1 (de) * 2001-08-20 2003-03-06 Voith Paper Patent Gmbh Vorrichtung zur Behandlung einer Faserstoffbahn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371775A1 (fr) * 2002-06-14 2003-12-17 Voith Paper Patent GmbH Dispositif pour la stabilisation d'une bande fibreuse
EP1788153A3 (fr) * 2005-11-19 2013-07-03 Voith Patent GmbH Dispositif pour le traitement d'une bande de matériau

Also Published As

Publication number Publication date
US7063772B2 (en) 2006-06-20
DE10140800A1 (de) 2003-03-06
EP1285991A3 (fr) 2004-01-02
JP2003064592A (ja) 2003-03-05
US20030034139A1 (en) 2003-02-20

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