• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT509992A4
    申请号:T0178210
    申请日:2010-10-27
    公开日:2012-01-15
    发明作者:Franz Ing Petschauer；Stefan Dipl Ing Hansen；Klaus Dipl Ing Poeschl
    申请人:Andritz Ag Maschf；
    IPC主号:
    专利说明:

    @ 004 ANDRITZ PATENT 27/10 10 14:53 FAX j-43 316 6902 454
    Apparatus and method for drying pulp
    The subject of this invention is a method for dewatering a fibrous web, wherein pulp is applied to a fibrous web via a 5 headbox on at least one sieve and dewatered, after the wire section, the fibrous web is passed through several presses and dewatered.
    The invention also provides an apparatus for carrying out the method according to the invention. 10
    A conventional apparatus for dewatering pulp is disclosed in WO99 / 66122 in FIG. In this device, a pulp suspension is applied via a headbox on a sieve, thereby forming a fibrous web. Subsequently, the fibrous web is passed through a first press, the so-called "Lump breaker". dewatered. This press has a nip, which is formed by a screen roller and by a couch roll. The couch roll is thereby wrapped by a felt.
    The problem bet this press is that at high production speeds, the felt is overloaded and it comes to pressing the web 20.
    The invention is therefore based on the object, a method with a "Lump breaker". or to provide a first press, in which even at high production rates sufficient dewatering of the fibrous web 25 can take place.
    This problem is solved by a dewatering process in which the first press, through which the fibrous web is guided to the headbox, is equipped with a double nip. The first press is thereby formed by a screen roller and by two couch rolls, which are each pressed against the screen roller to form a nip. The screen roller is surrounded by a screen and the nests are each wrapped by a felt.
    2595-AT 27/10 2010 MI 14:43 [SE / EM NR 6451 1 @ 004 ANDRITZ PATENT 27/10 '10 14, -54 FAX +43 316 6902 454
    • * * * * * * * * * * * * * * «« ·· • * * * * «· ψ · ··· ··· ··· * * * * ·« ···· * · ®005
    The double tip of the "Lump breaker" can significantly improve the drainage performance of the first press.
    It is advantageous if the Gautschwalzen be wrapped by a common felt 5. It is also useful if the felt is dewatered between the first and the second nip with a pipe suction, so that the felt runs dry again in the second nip.
    In a favorable embodiment, the fibrous web is transferred without loose tension of 10 of the first press in a subsequent shoe press, wherein the web transfer is carried out by means of a Saugwaize or a Rlllenwalze. The grooved roller is preferably evacuated.
    It is also advantageous if the fibrous web between the first and the second nip of the first press 15 is heated by a steam blower box. By heating the moist fibrous web, the viscosity of the water contained can be changed, whereby the drainage in the second nip is favored. The subject of this invention is also a corresponding device according to one of claims 6 to 10 for carrying out the method.
    In the following the invention will be described with reference to drawings. Show: 25
    Fig. 1 shows a conventional dewatering device according to the prior art;
    2 shows a schematic representation of the dewatering device according to the invention; 30 Fig. 3 shows a further variant of the invention Entwässerungsvorricbtung, same reference numerals in the respective figures denote the same components. 2
    2595-AT 27/10 2010 MI 14:49 [SE / EM NR 64511 BlOOfi
    ® 006 27/10 10 14:54 FAX +43 316 6902 454 ANDRITZ PATENT
    In Fig. 1, a dewatering device 1 according to the prior art is shown. The pulp suspension is injected through a headbox 2 between the wires 3 of the wire section. This forms a fibrous web 4, which is dewatered in a first press 8, the so-called "Lump Braker". 5 This first press 8 consists of a screen roller 5 and a couch roll 6, wherein the couch roll is wrapped by the felt 7. At high production speeds, the Fitz 7 is overloaded, the dewatering of the fibrous web 4 is then no longer satisfactory.
    After the first press 8 further presses 9 and 10 are arranged, by the 10, the fibrous web 4 can be further dehydrated.
    In Fig. 2, the dewatering device 11 according to the invention is shown. Again, a pulp suspension is injected via a headbox 2 between the two wires 12. Of course, it is also conceivable that this 15 drainage device has only a lower sieve. The first press 21 is designed as a double nip press. It thus consists of 3 rollers 15, 16, namely a screen roller 15 and two couch rolls 16. The two couch rolls 16 abut against the wire 17 and thus form a first nip and a second nip. The screen roller 15 is preferably evacuated and is looped around by the screen 12 20. The two Gautschwalzen 16 are wrapped in the present example of a common felt 17, but it is also conceivable that each Gautschwalze 16 is wrapped by its own felt. In the present example, a pipe sucker 23 is arranged for dry suction of the felt 17 between the two couch rolls 16. In addition, 25 is also arranged between the two Gautschwalzen 16 a steam blower box 22 for heating the fibrous web 4.
    Before the first press 21 are a suction box 14 and a steam blower box 13. After the first press a shoe press 10 is arranged, the fibrous web 4 is thereby transferred in free train from the first press 30 21 in the shoe press 10.
    In operation, the fibrous web 4 is dewatered after the wire section by the two press nips of the first press 21, the felt 17 absorbs moisture in each press nip from the fibrous web 4, in an evacuated 2595-AT 3 27/10 2010 MI 14:43 SE / EM NR 645 1] 0006 @ 007
    @ 007 ANDRITZ PATENT 27-Ί0 '10 14:54 FAI +43 316 6902 454
    Screen roller 15 is also removed moisture over the screen roller 15,
    In FIG. 3, a similar dewatering apparatus 11 is shown as in FIG. 2, but here the fibrous web 4 is transferred from the first press 21 into the following press (shown here as shoe press 10) without free tension, ie with permanent web support. The web transfer from the screen 12 for subsequent covering of the shoe press 10 is carried out with the aid of a suction roll 18 or a grooved roll 19. 4
    2595-AT 27/10 2010 MI 14:49 [SE / EM MR 64511 Binn
    权利要求:
    Claims (10)
    [1]
    1. A method for dewatering a fibrous web (4), wherein fibrous material for forming a fibrous web (4) via a headbox (2) on at least 5 a sieve (12) is applied and dehydrated and wherein the resulting fibrous web (4) is guided and dewatered downstream of the wire section by a plurality of presses (21, 10), characterized in that the first press (21) through which the fibrous web (4) is guided to the head box (2), is equipped with a double nip, while the first press (21) 10 through a screen roller (15) and two Gautschwaltz (16), each for forming a nip against the screen roller (15) are pressed, wherein the screen roller (15) by a screen (12) and the Gautschwalzen (16) are each wrapped by a felt (I7).
    [2]
    2. A method for dewatering a fibrous web (4) according to claim 1, characterized in that the Gautschwalzen (16) by a common felt (17) are wrapped.
    [3]
    3. The method according to claim 2, characterized in that the Fiiz (17) 20 between the first and the second nip of the first press (21) is dewatered with a pipe suction (23).
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the fibrous web (4) is transferred without loose train from the first press (21) in a subsequent shoe press (10), wherein the web transfer by means of a suction roll (18 ) or a grooved roller (19) is performed.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the fibrous web (4) between the first and the second nip of the first press 30 (21) by a steam blower box (22) is heated-
    [6]
    6. A device for dewatering a fibrous web (4) with a headbox (2) and a wire section, wherein after the wire section at least one 2595-AT 5 27/10 2010 MI 14:49 [SE / EM NR 6451] @ 008 @ 009 @ 009 ANDRITZ PATENT 27/10 '10 14:55 FAX +43 316 6902 454

    • * ♦ ··· «*« * * ♦ · * · · · m ♦ * * «« · · · · &<; · · · · · · · · · · · · «« ♦ »**» » first press (21) is arranged, through which the fibrous web (4) is guided, characterized in that the first press (21) is equipped with a double nip, wherein the first press (21) through a screen roller (15) and through two Gautschwalzen (15), each of which is pressed to form a nip against the 5 screen roller (15) is formed, wherein the Siebwaize (15) by a sieve (12) and the Gautschwaizen (16) each of a felt (17) entwined are.
    [7]
    7. The device according to claim 6, characterized in that the 10 Gautschwaizen (16) by a common felt (17) are looped.
    [8]
    8. Apparatus according to claim 6 or 7, characterized in that between the first and the second nip of the first press (21) a tube suction (23) for the dry suction of the felt (17) is arranged. 15
    [9]
    9. Device according to one of claims 6 to 8, characterized in that between the first press (21) and a subsequent shoe press (10) is arranged a suction roll (18) or a grooved roll (19) for web transfer. 20
    [10]
    10. Device according to one of claims 6 to 9, characterized in that between the first and second nip of the first press (21) a steam blower box (22) is installed. 25 259S-AT 27/10 2010 MI 14:48 [SE / EM NR 6451] @ 008
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1314817B1|2006-06-21|Method and machine for manufacturing a fibrous web
    EP1397587B1|2006-02-08|Method and device for producing a fibre strip provided with a three-dimensional surface structure
    DE102005046907A1|2007-04-12|Method and device for producing a tissue web
    DE102005054510A1|2007-05-24|tissue machine
    EP3359734A1|2018-08-15|Method for producing a fibrous material web
    AT509992B1|2012-01-15|DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL
    WO2017207475A1|2017-12-07|Machine for dewatering and drying a fibrous web
    DE19852431B4|2006-01-05|Plant for web drying of a fibrous web
    EP0993520B1|2002-09-18|Method for dehydrating solid-based liquid suspensions, specially fiber-based suspensions
    EP3212843A1|2017-09-06|Device for dewatering a fiber web
    AT517329A4|2017-01-15|METHOD FOR PRODUCING A FIBROUS WEB
    EP1778914B1|2011-10-05|Paper machine comprising a single-nip press
    DE102004056320A1|2006-05-24|Papermaking machine, producing paper webs moving through at high speeds, has a single nip at the press stage and through air drying at the leading end of the drying group
    DE102004039785A1|2006-02-23|Papermaking machine, producing paper webs moving through at high speeds, has a single nip at the press stage and through air drying at the leading end of the drying group
    EP1780332A1|2007-05-02|Apparatus and process for treating a fibrous web, especially a board or paper web
    AT15442U1|2017-09-15|press apparatus
    AT505760B1|2009-04-15|DEVICE AND METHOD FOR TAPPING A MATERIAL RAIL
    EP1739228A1|2007-01-03|Machine for manufacturing a fibrous web
    DE4301751A1|1994-07-28|Method and device for detaching a running web from two wire belts
    DE102019127683A1|2021-02-25|Drainage device
    AT517346B1|2017-01-15|press unit
    DE102019121068A1|2020-07-02|Device for producing a multi-layer fibrous web
    DE102019121067A1|2020-07-02|Device for producing a multi-layer fibrous web
    DE687441C|1940-01-29|Three-roll suction press for paper machines
    EP0993521B1|2002-04-17|Method for dehydrating solid-based liquid suspensions, in particular fiber-based suspensions
    同族专利:
    公开号 | 公开日
    CN103189566B|2015-09-16|
    CN103189566A|2013-07-03|
    EP2633117B1|2014-04-30|
    ES2487245T3|2014-08-20|
    JP2013540912A|2013-11-07|
    JP5901029B2|2016-04-06|
    WO2012054944A1|2012-05-03|
    US20130219739A1|2013-08-29|
    PT2633117E|2014-07-31|
    US9506692B2|2016-11-29|
    AT509992B1|2012-01-15|
    BR112013009903A2|2020-07-07|
    EP2633117A1|2013-09-04|
    BR112013009903B1|2021-06-08|
    CA2815874A1|2012-05-03|
    CA2815874C|2018-08-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH08502104A|1993-05-29|1996-03-05|ジェイ．エム．フォイトジー．エム．ビー．エイチ|Paper machine presses for thin paper|
    FI98843C|1995-10-03|1997-08-25|Valmet Corp|A method and apparatus for removing water from a paper or board web by compression|
    EP0950759A3|1998-04-15|2000-11-29|Voith Sulzer Papiertechnik Patent GmbH|Pressing arrangement|
    FI109815B|1998-06-16|2002-10-15|Metso Paper Inc|Device and method for drying cellulose|
    FI109210B|1998-11-24|2002-06-14|Metso Paper Inc|Method and apparatus for forming a cellulose web|
    JP2000160494A|1998-11-24|2000-06-13|Ishikawajima Harima Heavy Ind Co Ltd|Press apparatus for paper machine|
    AT412099B|2002-12-11|2004-09-27|Andritz Ag Maschf|Press section of a papermaking machine, to extract water from the wet web, has a lower fourdrinier to carry the web through the initial water extraction stage and following press assemblies|
    AT509992B1|2010-10-27|2012-01-15|Andritz Ag Maschf|DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL|AT509992B1|2010-10-27|2012-01-15|Andritz Ag Maschf|DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL|
    EP3622112A1|2017-05-10|2020-03-18|Voith Patent GmbH|Device and method for producing a fibrous web|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0178210A|AT509992B1|2010-10-27|2010-10-27|DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL|AT0178210A| AT509992B1|2010-10-27|2010-10-27|DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL|
    CN201180051107.3A| CN103189566B|2010-10-27|2011-10-13|For the apparatus and method of drying fiber material|
    PT117887604T| PT2633117E|2010-10-27|2011-10-13|Device and method for drying fibrous material|
    CA2815874A| CA2815874C|2010-10-27|2011-10-13|Device and method for drying fibrous material|
    BR112013009903-8A| BR112013009903B1|2010-10-27|2011-10-13|method for dewatering a web of fibrous material and device for dehydrating a web of fibrous material|
    PCT/AT2011/000425| WO2012054944A1|2010-10-27|2011-10-13|Device and method for drying fibrous material|
    JP2013535202A| JP5901029B2|2010-10-27|2011-10-13|Apparatus and method for drying dry fibrous material|
    EP11788760.4A| EP2633117B1|2010-10-27|2011-10-13|Device and method for drying fibrous material|
    US13/881,251| US9506692B2|2010-10-27|2011-10-13|Device and method for drying fibrous material|
    ES11788760.4T| ES2487245T3|2010-10-27|2011-10-13|Device and procedure for drying fibrous material|
    [返回顶部]