ATE69840T1 - DRAINAGE PRESS WITH STEAM FEED. - Google Patents

DRAINAGE PRESS WITH STEAM FEED.

Info

Publication number
ATE69840T1
ATE69840T1 AT88108738T AT88108738T ATE69840T1 AT E69840 T1 ATE69840 T1 AT E69840T1 AT 88108738 T AT88108738 T AT 88108738T AT 88108738 T AT88108738 T AT 88108738T AT E69840 T1 ATE69840 T1 AT E69840T1
Authority
AT
Austria
Prior art keywords
paper web
steam
press nip
flow
steam feed
Prior art date
Application number
AT88108738T
Other languages
German (de)
Inventor
Hans Dr Dipl-Ing Dahl
Herbert Dipl-Ing Holik
Reinhard Dipl-Ing Bluhm
Original Assignee
Escher Wyss 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 Escher Wyss Gmbh filed Critical Escher Wyss Gmbh
Application granted granted Critical
Publication of ATE69840T1 publication Critical patent/ATE69840T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0272—Wet presses in combination with suction or blowing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Landscapes

  • Paper (AREA)

Abstract

The dewatering of the paper web (1) takes place by means of a flow of steam led through the paper web (1) in a press nip (2) between two pressing surfaces (3 and 4) under such pressure that at least part of the paper web (1) becomes saturated. In order to effect this flow of steam, means are introduced in the area of the press nip (2) to guide the flow of steam from the upper to the under surface of the paper web (1) running through the press nip (2) with simultaneous removal from the undersurface of the paper web. In one embodiment, the means are an upper roll (3) with a perforated jacket (5), through which the externally produced steam is led under pressure into the press nip (2), and a lower roll (4) with a perforated jacket (6), through which the steam, together with the liquid expressed from the paper web, is sucked out and removed. <IMAGE>
AT88108738T 1987-08-22 1988-06-01 DRAINAGE PRESS WITH STEAM FEED. ATE69840T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873728124 DE3728124A1 (en) 1987-08-22 1987-08-22 DRAINAGE PRESS WITH STEAM FEED
EP88108738A EP0304561B1 (en) 1987-08-22 1988-06-01 Dewatering press with steam supply

Publications (1)

Publication Number Publication Date
ATE69840T1 true ATE69840T1 (en) 1991-12-15

Family

ID=6334326

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88108738T ATE69840T1 (en) 1987-08-22 1988-06-01 DRAINAGE PRESS WITH STEAM FEED.

Country Status (3)

Country Link
EP (1) EP0304561B1 (en)
AT (1) ATE69840T1 (en)
DE (2) DE3728124A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780512A1 (en) * 1995-12-20 1997-06-25 Franz-Ferdinand Dipl.-Kfm. Kufferath Device for removing water from a fibrous web
DE19627890A1 (en) * 1996-07-11 1998-01-15 Voith Sulzer Papiermasch Gmbh Method and device for dewatering a paper web
US6645420B1 (en) 1999-09-30 2003-11-11 Voith Sulzer Papiertechnik Patent Gmbh Method of forming a semipermeable membrane with intercommunicating pores for a pressing apparatus
EP1362948B1 (en) * 1999-09-30 2006-08-09 Voith Paper Patent GmbH Process for dewatering a fibrous web
DE19946978A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Press shoe assembly for water extraction from a wet paper/cardboard web has a blanket on one side of the web and a second belt on the other side with inner gas-filled zones against the web
DE19946984A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Water extraction zone for a wet paper/cardboard web is divided into separate sections, with individual settings for the pressure gas directed at a membrane over the web to displace water from it into a lower blanket
DE19946982A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Extraction of water from a wet paper/cardboard web has a leading press assembly followed by a water extraction zone where a gas under pressure displaces water from the web
DE19946972A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Water extraction station for a wet paper/cardboard web has a pressure zone for a gas to expel the water between four rollers and a web path to give two passes through the pressure zone
DE19946979A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Assembly for the extraction of water from a wet paper/cardboard web has a support roller facing a blower box to carry the web through between a lower blanket and an upper membrane covered by a perforated belt
DE19946973A1 (en) * 1999-09-30 2001-04-05 Voith Paper Patent Gmbh Extraction of water from a wet paper/cardboard web uses a gas at a constant pressure to force the water out of the web at a convex support surface with a membrane to give a mechanical web compression
DE10157693C5 (en) * 2001-11-24 2012-04-26 Voith Patent Gmbh Apparatus and method for winding a paper or board web
DE10304575A1 (en) * 2003-02-05 2004-08-19 Voith Paper Patent Gmbh Press gap, to extract water from a wet web, of paper/cardboard/tissue, has compressed air channels in the counter roller mantle to form an air cushion over the web at the press roller mantle recess
US7476293B2 (en) 2004-10-26 2009-01-13 Voith Patent Gmbh Advanced dewatering system
US7476294B2 (en) 2004-10-26 2009-01-13 Voith Patent Gmbh Press section and permeable belt in a paper machine
US7294237B2 (en) 2004-01-30 2007-11-13 Voith Paper Patent Gmbh Press section and permeable belt in a paper machine
CN1914372B (en) * 2004-01-30 2011-03-30 沃依特专利有限责任公司 Press section and permeable belt in a paper machine
US7510631B2 (en) 2004-10-26 2009-03-31 Voith Patent Gmbh Advanced dewatering system
US7527709B2 (en) 2006-03-14 2009-05-05 Voith Paper Patent Gmbh High tension permeable belt for an ATMOS system and press section of paper machine using the permeable belt
EP1845187A3 (en) 2006-04-14 2013-03-06 Voith Patent GmbH Twin wire former for an atmos system
US7524403B2 (en) 2006-04-28 2009-04-28 Voith Paper Patent Gmbh Forming fabric and/or tissue molding belt and/or molding belt for use on an ATMOS system
US7550061B2 (en) 2006-04-28 2009-06-23 Voith Paper Patent Gmbh Dewatering tissue press fabric for an ATMOS system and press section of a paper machine using the dewatering fabric
CA3189386A1 (en) * 2022-02-11 2023-08-11 David Beck Displacement dewatering a web using compressed gas

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2198387A (en) * 1935-04-26 1940-04-23 Holge Sigbjorn Paul Ebbinghaus Paper making machine
US2696148A (en) * 1950-01-07 1954-12-07 Beloit Iron Works Combined fluid pressure and suction press
US3162568A (en) * 1961-03-23 1964-12-22 James E Post Press units for moisture removal
SE364328B (en) * 1969-01-27 1974-02-18 Tampella Oy Ab
US4163688A (en) * 1972-11-30 1979-08-07 Valmet Oy Apparatus for dewatering in a paper machine
DE2529671C2 (en) * 1975-07-03 1982-07-15 Hans 7930 Ehingen Röscheisen Device for heating a fibrous web
US4272316A (en) * 1979-05-29 1981-06-09 Beloit Corporation Steam shower
DE3408118A1 (en) * 1984-02-06 1985-08-14 Sulzer-Escher Wyss GmbH, 7980 Ravensburg WET PRESS FOR DRAINING A FIBER TRAIN

Also Published As

Publication number Publication date
DE3866469D1 (en) 1992-01-09
DE3728124A1 (en) 1989-03-02
EP0304561B1 (en) 1991-11-27
EP0304561A1 (en) 1989-03-01
DE3728124C2 (en) 1991-06-27

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Legal Events

Date Code Title Description
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