EP0945545A2 - Dispositif d' aspiration - Google Patents

Dispositif d' aspiration Download PDF

Info

Publication number
EP0945545A2
EP0945545A2 EP99104513A EP99104513A EP0945545A2 EP 0945545 A2 EP0945545 A2 EP 0945545A2 EP 99104513 A EP99104513 A EP 99104513A EP 99104513 A EP99104513 A EP 99104513A EP 0945545 A2 EP0945545 A2 EP 0945545A2
Authority
EP
European Patent Office
Prior art keywords
felt
suction
suction device
slots
running direction
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Withdrawn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
EP99104513A
Other languages
German (de)
English (en)
Other versions
EP0945545A3 (fr
Inventor
Günter HALMSCHLAGER
Peter Haider
Franz Stelzhammer
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0945545A2 publication Critical patent/EP0945545A2/fr
Publication of EP0945545A3 publication Critical patent/EP0945545A3/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Withdrawn legal-status Critical Current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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D21F1/523—Covers thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/12—Drying

Definitions

  • the invention relates to a suction device for conditioning and / or Dewatering an endless felt of a paper and / or board machine, with a housing containing at least one vacuum chamber, that on its side facing the felt has at least one suction slit having.
  • a suction device of this type known from DE-A-43 05 493 is a continuous suction slit that extends transversely to the direction of felt intended.
  • This known suction device has been used in practice Proven in many ways. The disadvantage, however, is that only one limited slot width is possible. So it can be with smaller ones Slot widths lead to undesired felting. With the limited Slot width is also the conditioning length or dwell time, over which or during which a respective felt area is vacuumed or conditioned can be limited.
  • the aim of the invention is to provide a suction device of the type mentioned To create the kind of risk of unwanted felting a minimum is reduced and at the same time in particular also larger ones Dwell times for felt conditioning or drainage possible are.
  • Suction device is the length of at least part of the suction slots variably adjustable, the lengths of at least part of the suction slots for example, can also be adjustable separately.
  • adjustable Slot length is also the dwell time for felt conditioning or drainage adjustable. The arrangement can be made in this way be that the effective conditioning or drainage length during of operation and / or when the machine is at a standstill.
  • the suction slots are preferably aligned in the felt running direction.
  • at least a part of the suction slots obliquely to the direction of felt and with respect an extending in the direction of felt, perpendicular to the felt Center plane is arranged mirror-symmetrically.
  • the suction slits achieve a spreading effect at the same time.
  • At least one Part of the suction slots arranged side by side in at least one row, which are at least essentially straight over at least part of the Felt width extends.
  • at least part of the Suction slots can also be arranged in at least one row, which are extends obliquely over at least part of the felt width.
  • Suction device is at least part of the suction slots in at least two rows arranged in the direction of the felt.
  • two successive ones in the direction of felt travel Slit rows can be provided that are at least substantially straight extend over at least substantially the entire width of the felt.
  • At least one part the suction slots arranged in at least one pair of rows, both of which Rows of slots are each slanted over at least essentially one extend half the width of the felt and with respect to an extending in the direction of felt, center plane perpendicular to the felt arranged mirror-symmetrically are.
  • suction slots of successive rows of slots generally offset from one another transversely to the direction of felt and preferably are arranged on gap.
  • Suction devices are at least two consecutive ones Rows of slots provided, the suction slots arranged on gap and are defined between two comb-like diaphragms, which are in the felt running direction extending tines generally transverse to the direction of felt against each other are offset and preferably interlock. It can at least one comb-like diaphragm in the felt running direction relative to one stationary housing part to be adjustable. In certain cases it can also be advantageous if at least one comb-like diaphragm transversely to Felt running direction in several one or more tines each Sections is divided and at least part of these aperture sections adjustable in the direction of felt relative to a stationary housing part is. The panel sections can be at least partially separated be adjustable.
  • the housing containing at least one vacuum chamber can, for example be generally tubular and transverse to the direction of felt extend at least substantially over the entire width of the felt.
  • Suction device contains only one vacuum chamber, wherein this vacuum chamber preferably at least essentially stretches across the entire width of the felt.
  • FIG. 1 shows a first embodiment of a suction device 10 for conditioning and / or dewatering an endless felt 12 one Paper and / or cardboard machine.
  • the suction device 10 comprises a tubular, transverse to the direction of felt L at least essentially over the entire felt width or machine width extending housing 14.
  • This housing 14 contains in the present case is a continuous, at least essentially Vacuum chamber 16 extending over the entire width of the machine.
  • the housing 14 On its side facing the felt: 12 is the housing 14 with a Cover 18 provided, the outer surface as a support surface 20 for the passing felt 12 is used and with a variety of separate, itself suction slits 22, 22 'each extending in the felt running direction L. through which the felt 12 is sucked.
  • the suction slots 22, 22 'extending in the felt running direction L are shown in FIG their length is variably adjustable.
  • the lengths are of the suction slots 22, 22 'jointly adjustable. Basically, however such an embodiment is also conceivable in which the lengths at least part of these suction slots 22, 22 'can be adjusted separately.
  • suction slots 22 or 22 'comprehensive rows of slots A, B are provided, each straight extend over at least substantially the entire width of the felt.
  • the suction slots 22 of the one row of slots A are transverse to the felt running direction L compared to the suction slots 22 'of the other slot row B offset and arranged on gap.
  • the cover 18 can have two comb-like diaphragms 24, 26, whose in the felt running direction L extending tines 28, 30 generally transverse to the direction of felt L against each other are offset and interlock in the manner shown, so that the suction slots 22 and 22 'forming the two rows of slots A, B are defined between these comb-like diaphragms 24, 26.
  • the in The support surface 20, not shown in FIG. 2 is accordingly at least in part due to the felt-side surfaces of the prongs 28, 30 and back 32, 34 of the two comb-like panels 24, 26 are formed.
  • At least one of the two comb-like panels 24, 28 is in the felt running direction L relative to a stationary housing part 36 (see FIG. 1) slidable.
  • both panels 24, 26 adjustable are expedient both panels 24, 26 adjustable.

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
EP99104513A 1998-03-27 1999-03-06 Dispositif d' aspiration Withdrawn EP0945545A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813772A DE19813772A1 (de) 1998-03-27 1998-03-27 Saugvorrichtung
DE19813772 1998-03-27

Publications (2)

Publication Number Publication Date
EP0945545A2 true EP0945545A2 (fr) 1999-09-29
EP0945545A3 EP0945545A3 (fr) 2001-01-03

Family

ID=7862687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104513A Withdrawn EP0945545A3 (fr) 1998-03-27 1999-03-06 Dispositif d' aspiration

Country Status (3)

Country Link
US (1) US6221215B1 (fr)
EP (1) EP0945545A3 (fr)
DE (1) DE19813772A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216818A1 (de) * 2002-04-16 2003-10-30 Voith Paper Patent Gmbh Saugvorrichtung
EP1685293A2 (fr) * 2003-11-17 2006-08-02 Astenjohnson, Inc. Couvercle de boite de deshydratation du vide de type en arete de poisson

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT518060B1 (de) * 2016-07-07 2017-07-15 Klaus Ing Bartelmuss Vorrichtung zur Reinigung eines Filzbandes in einer Anlage zur Herstellung eines Papierbandes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218228A (en) * 1963-09-05 1965-11-16 A P Wagenknecht Co Inc Suction pipe cover
AT306498B (de) * 1970-12-22 1973-04-10 Leder & Riemen Patent Mit dem Sieb oder Filz einer Papiermaschine oder Zellstoffentwässerungsmaschine in gleitender Berührung stehender Bauteil
US3859163A (en) * 1973-01-05 1975-01-07 Scapa Dryers Ltd Moisture control of felts and webs in papermaking systems
AT355412B (de) * 1976-08-16 1980-03-10 Rauchmaul Kunststoffverarbeitu Einrichtung zum entwaessern von papierfaserstoff
US5147508A (en) * 1991-10-11 1992-09-15 The Nash Engineering Company Suction box covers for cleaning papermaking machine felts

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1236359A (en) * 1916-10-14 1917-08-07 Elmer H Reynolds Suction-box for cloth crabbing and extracting machines.
US3052296A (en) * 1958-11-04 1962-09-04 Beloit Iron Works Uniflow fourdrinier
DE2641115C2 (de) * 1976-09-13 1978-01-19 Leder- Und Riemen-Patentverwertungsgesellschaft Mbh, Wien Saugerplatte für Zellstoffentwässerungsmaschinen, insbesondere Papiermaschinen o.dgl
DE7833942U1 (de) * 1978-11-15 1979-02-15 Gebrueder Trox Gmbh, 4133 Neukirchen- Vluyn Vorrichtung zum traenken von faservliesen mit einem bindemittel
AT392303B (de) * 1988-10-06 1991-03-11 Bartelmuss Heinrich Ing Belag
DE4305493A1 (de) * 1993-02-23 1994-08-25 Voith Gmbh J M Saugvorrichtung zum Besaugen eines endlosen Bandes mit selbstjustierender Sauglänge
DE4322320A1 (de) * 1993-07-05 1993-11-11 Voith Gmbh J M Filzsauger mit einstellbarer Filzsaugerbreite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218228A (en) * 1963-09-05 1965-11-16 A P Wagenknecht Co Inc Suction pipe cover
AT306498B (de) * 1970-12-22 1973-04-10 Leder & Riemen Patent Mit dem Sieb oder Filz einer Papiermaschine oder Zellstoffentwässerungsmaschine in gleitender Berührung stehender Bauteil
US3859163A (en) * 1973-01-05 1975-01-07 Scapa Dryers Ltd Moisture control of felts and webs in papermaking systems
AT355412B (de) * 1976-08-16 1980-03-10 Rauchmaul Kunststoffverarbeitu Einrichtung zum entwaessern von papierfaserstoff
US5147508A (en) * 1991-10-11 1992-09-15 The Nash Engineering Company Suction box covers for cleaning papermaking machine felts

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216818A1 (de) * 2002-04-16 2003-10-30 Voith Paper Patent Gmbh Saugvorrichtung
EP1685293A2 (fr) * 2003-11-17 2006-08-02 Astenjohnson, Inc. Couvercle de boite de deshydratation du vide de type en arete de poisson
EP1685293A4 (fr) * 2003-11-17 2007-08-01 Astenjohnson Inc Couvercle de boite de deshydratation du vide de type en arete de poisson
US7540943B2 (en) 2003-11-17 2009-06-02 Astenjohnson, Inc. Shaped slot vacuum dewatering box cover

Also Published As

Publication number Publication date
US6221215B1 (en) 2001-04-24
EP0945545A3 (fr) 2001-01-03
DE19813772A1 (de) 1999-09-30

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