EP1022380A2 - Dispositif de pressage - Google Patents

Dispositif de pressage Download PDF

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Publication number
EP1022380A2
EP1022380A2 EP99123477A EP99123477A EP1022380A2 EP 1022380 A2 EP1022380 A2 EP 1022380A2 EP 99123477 A EP99123477 A EP 99123477A EP 99123477 A EP99123477 A EP 99123477A EP 1022380 A2 EP1022380 A2 EP 1022380A2
Authority
EP
European Patent Office
Prior art keywords
press
roller
web
arrangement according
shoe
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Withdrawn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
EP99123477A
Other languages
German (de)
English (en)
Other versions
EP1022380A3 (fr
Inventor
Andreas Meschenmoser
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 EP1022380A2 publication Critical patent/EP1022380A2/fr
Publication of EP1022380A3 publication Critical patent/EP1022380A3/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Withdrawn legal-status Critical Current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
    • 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
    • D21F3/04—Arrangements thereof
    • 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
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip

Definitions

  • the invention relates to a press arrangement for treating a fibrous web, especially a paper or cardboard web.
  • the aim of the invention is a press arrangement of the aforementioned Art to create that with the most compact design and low manufacturing costs in particular, a volume-saving drainage guaranteed.
  • This object is achieved according to the invention in that at least two press gaps, one behind the other, extended in the direction of web travel are provided, of which at least the first is double felted, and that the first extended press nip between a shoe press unit and a press suction roll provided at the same time as a pick-up roll is that of a web belt taking over the fibrous web Felt is wrapped through which the fibrous web is extended to the first Press nip is guided.
  • the press arrangement according to the invention is the shoe press unit by one below, two extended press nips formed common shoe press roll, the except the press suction roll is assigned a further top roll.
  • Such a two comprehensive press nips extended in the web running direction Press arrangement is inexpensive to manufacture. There is no mutual Line force influence on, so that a crowning of the rollers is not necessary. Volume-saving drainage is guaranteed. In addition there is a flat gradient, which means that in the two Press gaps in the Z direction set a slower flow rate. Overall, optimal nip or gap drainage is achieved. After the web has been removed from the wire by a press roller provided suction roll takes place, is an extremely compact overall Construction reached.
  • the two presses can in particular be carried out without a lever be, which means that a respective pressing in particular done by a respective hydraulic pressure shoe, whereby a closed power flow is achieved within the frame.
  • the shoe press roll is preferably with a positionally stable press jacket guide provided, thereby regardless of the respective operating conditions always ensures optimal web and / or felt guidance is.
  • the two are elongated Press nips formed by two separate shoe presses.
  • the two shoe presses each preferably comprise a shoe press roll, the two elongated press nips then by the respective Shoe press roll and the press suction roll provided at the same time as the pick-up roll or a further counter roll are formed.
  • the fibrous web can between the two elongated press nips preferably together with a felt around a preferably as a suction roll trained deflection roller to be guided.
  • a felt is expediently passed through both elongated press nips.
  • Press arrangement are both elongated in the direction of web travel Press nips felted twice. This results in a low one Bilateralism. There are no press roll scrapers in the area of the second counter roll required. In addition, the path is completely closed from sieve to dryer section possible. Overall are advantageous A maximum of three felts are provided.
  • Press arrangement is the second elongated viewed in the direction of web travel Press nip simply felted. In this case, two felts are sufficient, if one of these felts is passed through both press nips at the same time.
  • At least part of the two advantageously has in the direction of web travel extended press nips each forming an open, especially blind bored and / or grooved press surface.
  • the second extended press nip If the second extended press nip is simply felted, it has one Shoe press unit forming this second press nip rear counter roll expediently an at least substantially closed pressing surface.
  • Such a smooth counter roll is for certain products such as Liner with white top (“White Top”) suitable.
  • the drainage takes place at least of an extended press nip at least partially by spinning off of water in at least one gutter or the like.
  • At least one counter roller and / or the Press suction roll is formed by an internally supported hollow roll.
  • Fig. 1 shows a purely schematic, partially sectioned representation first embodiment of a press arrangement for treating a Fibrous web 10, which is in particular a paper or Cardboard web can act.
  • the fibrous web 10 is in the area of a press suction roll 12 by a Oberfilz 14 taken from a wire 16 and then together with a bottom felt 18 a first in the web running direction L extended press nip S1 supplied. Following this, the fibrous web 10 together with the bottom felt 18 a second in the web running direction L fed press nip S2.
  • the two are in the direction of web travel L extended press gaps S1 and S2 between one below Shoe press roll 20 and the press suction roll 12 or another counter roll or press roll 24 formed above.
  • the first double felted elongated press nip S1 is thus between the shoe press roll 20th and the press suction roll 12 which is simultaneously provided as a pick-up roll educated.
  • the rear counter or press roll 24 can be supported on the inside. So can this rear press roller 24, for example, a Deflection compensation roller act (see also Fig. 3). While the Press suction roll 12 obliquely left above the shoe press roll 20th is arranged, the further press roller 24 is obliquely right above the Shoe press roll 20 provided.
  • the press roller 24 can advantageously are slightly higher than the press suction roller 12. Following the the second press nip S2 extended in the web running direction L becomes the fibrous web 10 in the region of a deflection roller designed as a suction roller 30 taken over by a drying wire 32 and the first drying cylinder 34 fed to a dryer section.
  • the fibrous web 10 is connected to the first extended press nip S1 passed around a suction roller 36 together with the bottom felt 18, before being taken over by the press roll 24 and extended by the second Press nip S2 is supplied.
  • the result is a continuous one closed web guidance, namely from the takeover of the fibrous web 10 through the upper felt 14, which also serves as a pick-up felt Sieve web 16 until delivery to the dryer section.
  • the second is also extended Press gap S2 felted twice.
  • a further top felt 26 is provided for this purpose, guided around the upper right press roll 24 in the manner shown is and following the second extended press nip S2 again by the fibrous web 10 is separated.
  • the fibrous web 10 is thus between the lower felt 18 and the upper felt 26 extended by the second Press nip S2 performed.
  • the embodiment of a press arrangement shown in FIG. 2 differs from that of FIG. 1 by the fact that the second elongated press nip S2 is simply felted. It is also in the present case, the bottom felt 18 by both extended press nips S1, S2 led. In contrast, that in the embodiment according to FIG. 1 provided, the upper roll wrapping around the press roll 24. As shown in 2 can be seen, the fibrous web 10 is following the second extended press nip S2 in free pull from the rear counter or press roll 24 to a deflecting roll 22 and via this to the first Drying cylinder 34 guided the dryer section.
  • FIG 3 is an embodiment of one in the press arrangement usable position stable shoe press roll 20 shown. After that includes the shoe press roller 20 located at the bottom against one of its ends Twist secured outer hollow beam 80, one around the hollow beam 80 circumferential flexible press jacket 82 and two support devices 84, through which the press jacket 82 in the area of the two press gaps S1 and S2 is supported on the inside.
  • the outer hollow carrier 80 which guides the press jacket 82 is also a Assigned non-rotatably mounted inner carrier 86.
  • the press jacket 82 by means of the two support devices 84 through the jacket of the Hollow support 80 is supported directly on the inner support 86.
  • the support devices 84 each comprise at least one on the outside Hollow beam 80 guided press shoe 88 and several in a row across to the web running direction L arranged support elements 90 through which the Press shoe 88 is supported directly on the inner carrier 86.
  • the Support elements 90 have radially inner, on or in the inner carrier 86 guided pistons 92. These support elements are at the radially outer end 90 coupled to the press shoe 88 via a respective joint.
  • the hollow support 80 and the inner support 86 are lateral at their ends Supports or stands preferably stored equidistant from one another.
  • the bearings of the shoe press roll 20 arranged below are located and the two upper press rolls 12, 24 on the two Pages on a common level.
  • Bearing bushes can be pushed onto the two ends of the inner carrier 86 be that have a spherical outer bearing surface and in one appropriately trained recording of the respective stand added are.
  • the ends are formed by the spherical bearings of the inner support 44 relative to the hollow support fixedly mounted on the stands 80 tiltable so that the inner support 86 can be bent freely can.
  • the shoe press roll 20 has an open pressing surface.
  • the press jacket of the shoe press roll 20 can in particular be blind drilled and / or grooved.
  • Fig. 1 also has the rear Press roll 24 an open, especially blind drilled and / or grooved Pressing surface.
  • the rear upper Press roll 24 with an at least substantially closed surface Mistake.
  • the extended press nip S1 is drained by centrifuging of water in channels 72, 74 (see. Fig. 1 and 2), which by the open press surfaces of the press rolls 12, 20 is possible. As with the 1 and 2 can be seen, takes place after the first extended press nip S1 on both sides such drainage by centrifuging of water, for which the two channels 72, 74 on different Sides of the fibrous web 10 are arranged.
  • a web separating device can follow the second extended press nip S2 66 may be provided. This can be a suction cup 66 or a Suction roller 66 ', through which the fibrous web 10 in the area the separation point is sucked away from the upper felt 26 onto the lower felt 18.
  • the trough 72 can in principle also be used as a combined trough and web holding box may be provided.
  • a scraper or the like is provided in the area of the rear upper press roll 24 according to the embodiment Fig. 2, for example.
  • Fig. 3 is also one of the rear press roll 24 associated inner Support device 56 to recognize.
  • the upper press rolls 12, 24 are driven.
  • Fig. 4 shows a more detailed cross-sectional view of another Embodiment of one in the press arrangement according to FIGS. 1 and 2 usable position stable shoe press roll 20 '.
  • this case includes the shoe press roller 20 'located underneath a non-rotatably mounted hollow carrier 38, a flexible around the hollow carrier 38 Press jacket 40 and two in the circumferential direction a distance from each other having outer support devices 42, via which the press jacket 40th in the area of the two elongated press gaps S1 and S2 on the hollow beam 38 is supported.
  • the outer hollow carrier 38 is a likewise non-rotatably mounted inner carrier 44 assigned to which the hollow support 38 on the inside via a support device 46 is supported so that one by the differently directed Pressing forces in the area of the two extended press nips S1 and Resulting deflection generated S2 at least substantially compensated becomes.
  • the inner one arranged between the hollow carrier 38 and the inner carrier 44 Support device 46 comprises at least one transverse to the web running direction L extending row of support members 48.
  • the two outer Support devices 42 each have at least one press shoe 50 and in each case again several in a direction extending transversely to the web running direction L.
  • Row arranged support elements 52 In the present case each of the support members 48 and 52 each includes at least one cylinder / piston unit.
  • the direction of action of the inner support device 46 lies in the resulting direction of action of the two outer support devices 42.
  • the two outer Support devices 42 applied support forces at least substantially same size.
  • the radial directions of action are the two outer ones Support devices 42 preferably offset by approximately 120 °.
  • the direction of action of the inner support device 46 lies in the bisector of the angle between the two radial directions of action of the two outer Support devices 42.
  • the two outer Support devices 42 and the inner support device 46 applied Forces at least essentially the same size, so that they are a form an equilateral triangle of forces.
  • the rows of support elements also have this of the two outer supports 42 and the inner support 46 an equal division.
  • their support elements 42, 48 same piston surfaces.
  • the two outer supports 42 and the inner support 46 are, for example, preferably variably adjustable by the same Pressure can be applied.
  • the deflection of the hollow beam 38 through the inner Support device 46 influenced so that one by the forces in the area the two press nips S1 and S2 generated deflection at least in is substantially compensated. So that the hollow beam 38 is no longer on bending in the cross machine direction, but only on shell deformation claimed.
  • Fig. 5 shows a schematic, partially sectioned representation Embodiment of a press arrangement having two separate shoe presses, where both the first S1 and the second extended Press nip S2 is felted twice.
  • FIG. 5 thus differs from that of Fig. 1 essentially in that instead of the common Shoe press roll 20 separate shoe press rolls 20 ", 20" 'for the extended ones Press gaps S1 and S2 are provided.
  • the first shoe press is the one intended as a pick-up roller Press suction roll 12 and the shoe press roll 20 ".
  • the second Shoe press is by the shoe press roll 20 "'and the associated counter or press roll 24 formed.
  • the bottom felt 18 is here again passed through both press nips S1 and S2.
  • the upper felt 14 is through the Press nip S1 and the upper felt 26 passed through the press nip S2.
  • drainage takes place via channels 72 to 78.
  • Also in the rest of the structure is at least essentially the same as in the Embodiment according to FIG. 1.
  • the embodiment according to FIG. 6 differs from that of FIG. 5 essentially in that the second extended press nip S2 only is simply felted.
  • the upper felt 26 is therefore also omitted here in accordance with the embodiment 2 has the rear counter or press roller 24 again a closed press surface.
  • the fibrous web following the second extended press nip S2 again in free train from the rear press roller 24 to a deflecting roller 22 and led to the following dryer section.

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  • Paper (AREA)
EP99123477A 1999-01-20 1999-11-25 Dispositif de pressage Withdrawn EP1022380A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902139 1999-01-20
DE19902139A DE19902139A1 (de) 1999-01-20 1999-01-20 Pressenanordnung

Publications (2)

Publication Number Publication Date
EP1022380A2 true EP1022380A2 (fr) 2000-07-26
EP1022380A3 EP1022380A3 (fr) 2001-07-11

Family

ID=7894850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123477A Withdrawn EP1022380A3 (fr) 1999-01-20 1999-11-25 Dispositif de pressage

Country Status (3)

Country Link
US (1) US6334932B1 (fr)
EP (1) EP1022380A3 (fr)
DE (1) DE19902139A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014206535A1 (fr) * 2013-06-25 2014-12-31 Andritz Ag Section des presses pour l'égouttage d'une bande de matière fibreuse
CN107326715A (zh) * 2017-05-27 2017-11-07 钟敏芝 一种造纸用的脱水装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10030048A1 (de) * 2000-06-19 2001-12-20 Voith Paper Patent Gmbh Pressanordnung
DE10053935A1 (de) * 2000-10-31 2002-05-08 Voith Paper Patent Gmbh Pressenanordnung
ATE398207T1 (de) * 2003-09-26 2008-07-15 Voith Patent Gmbh Maschine zur herstellung einer faserstoffbahn
DE102011007568A1 (de) * 2011-04-18 2012-10-18 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Materialbahn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321406A1 (de) * 1993-06-26 1993-11-11 Voith Gmbh J M Naßpartie einer Papiermaschine mit einer Siebpartie und einer Pressenpartie
DE4340041A1 (de) * 1993-11-24 1994-04-07 Voith Gmbh J M Pressenpartie für eine Papiermaschine
DE19633958A1 (de) * 1996-04-03 1997-10-09 Voith Sulzer Papiermasch Gmbh Saugpreßwalze
DE19654201A1 (de) * 1996-12-23 1998-06-25 Voith Sulzer Papiermasch Gmbh Pressenpartie
DE29811048U1 (de) * 1998-04-15 1998-09-17 Voith Sulzer Papiertech Patent Pressenanordnung
DE29823556U1 (de) * 1998-04-15 1999-09-02 Voith Sulzer Papiertech Patent Pressenanordnung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI85997C (fi) * 1987-06-17 1992-06-25 Valmet Paper Machinery Inc Presspartiet i en pappersmaskin.
DE3815278A1 (de) * 1988-05-05 1989-11-16 Voith Gmbh J M Pressenpartie einer maschine zur herstellung einer faserstoffbahn, insbesondere papierbahn
DE9206340U1 (fr) * 1991-08-10 1992-08-13 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
JP2000516668A (ja) 1996-08-22 2000-12-12 フォイト ズルツァー パピーアマシーネン ゲゼルシャフト ミット ベシュレンクテル ハフツング 特にペーパウェブ、ボール紙ウェブ又は繊維ウェブのような材料ウェブを形成又は処理するサクションローラ
DE19654282A1 (de) * 1996-12-24 1998-06-25 Voith Sulzer Papiermasch Gmbh Pressenpartie
DE19724911A1 (de) * 1997-06-12 1998-12-17 Voith Sulzer Papiermasch Gmbh Preßeinheit
DE19816759A1 (de) * 1998-04-16 1999-10-21 Voith Sulzer Papiertech Patent Preßanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321406A1 (de) * 1993-06-26 1993-11-11 Voith Gmbh J M Naßpartie einer Papiermaschine mit einer Siebpartie und einer Pressenpartie
DE4340041A1 (de) * 1993-11-24 1994-04-07 Voith Gmbh J M Pressenpartie für eine Papiermaschine
DE19633958A1 (de) * 1996-04-03 1997-10-09 Voith Sulzer Papiermasch Gmbh Saugpreßwalze
DE19654201A1 (de) * 1996-12-23 1998-06-25 Voith Sulzer Papiermasch Gmbh Pressenpartie
DE29811048U1 (de) * 1998-04-15 1998-09-17 Voith Sulzer Papiertech Patent Pressenanordnung
DE29823556U1 (de) * 1998-04-15 1999-09-02 Voith Sulzer Papiertech Patent Pressenanordnung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014206535A1 (fr) * 2013-06-25 2014-12-31 Andritz Ag Section des presses pour l'égouttage d'une bande de matière fibreuse
CN107326715A (zh) * 2017-05-27 2017-11-07 钟敏芝 一种造纸用的脱水装置

Also Published As

Publication number Publication date
DE19902139A1 (de) 2000-07-27
EP1022380A3 (fr) 2001-07-11
US6334932B1 (en) 2002-01-01

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