• 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:
    A web-forming section and method in a paper machine. The web-forming section includes a lower wire loop having an initial lower wire run constituting an initial single-wire dewatering zone of the web-forming section in which the web is dewatered through the lower wire, and an upper wire loop having a joint run with a subsequent run of the lower wire to form a two-wire dewatering zone of the web-forming section within which dewatering takes place substantially through the upper wire. A first open faced forming roll is situated within the upper wire loop so that the two-wire dewatering zone begins and curves upwardly in the region of the first forming roll. A forming shoe within the lower wire loop has a curved deck whose center of curvature is situated on the side of the lower wire loop and further guides the joint run of the upper and lower wires in the two-wire dewatering zone. A second forming roll situated within the lower wire loop after the forming shoe guides the joint run of the upper and lower wires over a downwardly curved sector thereof. According to the method, initial dewatering occurs in the single-wire dewatering zone through the lower wire. In the two-wire dewatering zone, within the range of the first and second forming rolls and the forming shoe situated therebetween, dewatering occurs first within the sector of the first open forming roll in two directions through both the upper and lower wires and primarily through the upper wire. The web is thus substantially dewatered whereupon within the region of the forming shoe, further dewatering takes place primarily upwardly through the upper wire and thereupon the dewatering pressure is further increased within the range of the second forming roll while dewatering continues to take place substantially through the upper wire.
    公开号:SU1304751A3
    申请号:SU833659006
    申请日:1983-10-17
    公开日:1987-04-15
    发明作者:Копонен Мартти；Коски Эркки；Коскимис Йуни；Пуллинен Мартти
    申请人:Валмет Ой (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to papermaking equipment.
    The aim of the invention is to improve the quality of the formation of a sheet of paper.
    Fig. 1 schematically shows a section for forming a web of paper, side view; Fig. 2 illustrates a paper web forming section for improving a long-length papermaking machine.
    The papermaking machine section contains a lower mesh loop 1 with an overlap of transfer of the double mesh dewatering zone 8 to the horizontal level of the single-mesh initial part 3, located behind the second forming roller 13.
    Paper Machine Section
    works as follows.
    I
    JO
    The pulp enters the horizontal single-mesh initial part 3 from the head box 4 for the initial, dewatering stage. Further dewatering takes place through the upper grid 6 and the water-receiving surface rollers 2, which form the stability of the first forming roll 10 under the horizontal single-grid initial compression action between grids 1 and 6. 3 dehydrating zokyu-aaac, which is dehydrated in the girth sector the first mounted pressure box 4, and the first forming roll, 10 is equipped with dewatering means - smoothly and continues on the curved 5 (suction boxes), the top loop 2o of the surface 12 of the forming shoe 11, the nets 6 with the guide shaft where the dewatering is carried out by 7, forming together with a loop from bottom to top under the action of the centrifugal blue grid 1, the two-grid dehydrating and under the action of tension between the zone 8, equipped with a series of grids 1 and 6. In the sector of the girth, In the course of the movement of the 25 forming roller 13, the pressure at the web of paper 9 by the first forming roller is maximum dewatering. Apply 10 located inside the upper mesh loop 6 and made with a water intake surface containing deaf or through holes or a spiral groove. Next is a pin-shaped mold shoe 1 1 with a convex surface 12 for guiding the grids, the center of curvature of which is located on the side of the lower mesh loop 1. The shaping shoe 11 is connected with an adjustable vacuum system and is located inside the loop of the lower mesh 1, then the second shaping roller follows 13, located inside the lower mesh loop 1. The double mesh zone 8 is in contact with the first shaping roller 10 in the girth sector 5-60 and is bent upwardly relative to the horizontal single mesh portion 3, while the surface 12 of the forming shoe 11 is located above the horizontal part 3 for directing the double mesh dewatering zone 8 upwards, the sector of the second forming roll 13 in contact with the double mesh dewatering zone 8, is located above the horizontal single mesh initial part 3, and the double mesh zone 8 is directed downwards along the paper web for the second molding 1M roll 13. The section also has an additional guide roll 14 of the upper mesh loop 6
    to transfer the dual-mesh dewatering zone 8 to the horizontal level of the single-mesh initial part 3, located behind the second shaping roller 13.
    Paper Machine Section
    works as follows.
    I
    also drying tumblers 15.
    权利要求:
    Claims (2)
    [1]
    1. A section of a paper machine for forming a sheet of paper containing a lower mesh loop with guide rollers forming the horizontal single-mesh initial part of the dewatering zone above which. mounted on a punchbox, and supplied with dewatering agents, a loop of the upper net with guide rollers, forming together with a loop of the lower net a double net dewatering. a first forming roll, located inside the upper mesh loop, a spindle-shaped shoe forming a convex surface for guiding the mesh run, the center of curvature of which is located on the lower mesh loop side, connected with an adjustable vacuum system and located inside the lower mesh loop, and the second one with the 1st roll, located inside the lower mesh loop, which is so that, in order to improve the quality of the molding olotna paper, the first forming roller configured to water receiving surface dvuhsetoch
    31
    The zone of contact with the first forming roll in the girth sector of 5 - 60 ° and bent upward relative to the horizontal single-mesh part, while the convex surface of the forming shoe is located above the horizontal part of the mesh to direct the two-mesh dewatering zone upwards from the two - net dewatering zone, races
    placed above the horizontal one-grid starting part, and the double-mesh dewatering zone is directed downwards along the movement of the web of paper behind the second forming roll.
    [2]
    2. Section POP.1, characterized in that it has an additional guide roll of the upper mesh loop for transferring the two-grid dewatering zone to the horizontal level of the single-mesh initial part located behind the second shaping roller.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1304751A3|1987-04-15|Paper-making machine section for forming paper web
    US4925531A|1990-05-15|Twin wire former for a paper machine
    US3994774A|1976-11-30|Twin-wire paper machine adjustable to single-wire machine
    US3846233A|1974-11-05|Papermaking machine having a single wire run and a double wire run over a downwardly curving dewatering box
    US3846232A|1974-11-05|Twin-wire paper forming with wires wrapping around a suction web-forming breast roll and then following a curved path to a suction couch roll
    US4055461A|1977-10-25|Paper machine with single-wire and curved twin-wire formers
    GB1577273A|1980-10-22|Machine for making tissue paper
    KR900010147A|1990-07-06|Web Forming Method and Apparatus
    US3810818A|1974-05-14|Twin-wire papermaking machine with suction boxes within the loop of one wire and blast boxes within the other
    EP0373133A2|1990-06-13|Method and device in the formation of a paper or board web
    EP0296135B1|1990-10-03|Hydrid former for a paper machine
    US5074966A|1991-12-24|Gap former in a paper machine
    US4209360A|1980-06-24|Two-sided drainage in a roll-type twin-wire former
    CA1116452A|1982-01-19|Tissue paper machine
    KR100362492B1|2003-02-05|Hybrid former for paper machine
    EP0300547B1|1991-10-16|Dewatering zone in a papermachine
    KR880001124B1|1988-06-30|Top wire former
    CA1066545A|1979-11-20|Vertical twin wire paper machine
    SE8301127L|1983-09-03|PAPING MACHINE PARTY FOR PAPER MACHINES DEDICATED FOR MODERNIZING A PLANE WIRE PARTY
    US4919760A|1990-04-24|Web former for a paper machine
    WO1986004368A1|1986-07-31|Procedure and means for improving the papermaking process on a fourdrinier wire section
    US3355350A|1967-11-28|Paper machine
    EP0712959B1|1999-05-19|Set of ribs in a dewatering device in a paper machine
    CA1234308A|1988-03-22|Forming roll apparatus
    US4167441A|1979-09-11|Papermaking machine
    同族专利:
    公开号 | 公开日
    IT8319848D0|1983-03-01|
    FI75375C|1988-06-09|
    JPS59500278A|1984-02-23|
    AU1228983A|1983-10-18|
    FI820742L|1983-09-03|
    JPH0377317B2|1991-12-10|
    DE3361314D1|1986-01-09|
    CA1219758A|1987-03-31|
    US4744866A|1988-05-17|
    ES8402898A1|1984-02-16|
    BR8306111A|1984-01-17|
    IT1161201B|1987-03-18|
    FI75375B|1988-02-29|
    EP0101709A1|1984-03-07|
    ES520173A0|1984-02-16|
    WO1983003109A1|1983-09-15|
    US4614566A|1986-09-30|
    DE101709T1|1984-08-16|
    EP0101709B1|1985-11-27|
    引用文献:
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    US3232825A|1963-09-16|1966-02-01|Time Inc|Dual wire type paper-forming apparatus and methods of forming and dewatering paper|
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    GB1078010A|1964-09-14|1967-08-02|Time Inc|Paper-forming apparatus|
    US3438854A|1964-10-29|1969-04-15|Time Inc|Dual wire paper forming apparatus and suction box therefor|
    GB1129893A|1965-01-18|1968-10-09|Beloit Corp|Paper making apparatus|
    US3855057A|1967-11-02|1974-12-17|Beloit Corp|Paper formation utilizing a large diameter suction roll|
    US3573162A|1967-12-06|1971-03-30|Beloit Corp|Multi-ply paper formation|
    US3582467A|1968-06-25|1971-06-01|Beloit Corp|Two wire former|
    US3540981A|1969-02-20|1970-11-17|John S Finnila|Web formation between a pair of foraminous belts|
    GB1328969A|1970-01-09|1973-09-05|Beloit Corp|Apparatus for forming a fibrous web|
    DE2102717A1|1970-01-26|1971-08-12|Enso Gutzeit Oy|Method and device for the production of paper, cardboard or a similar fibrous material web|
    US3726758A|1971-07-08|1973-04-10|J Parker|Twin-wire web forming system with dewatering by centrifugal forces|
    US3846233A|1972-09-11|1974-11-05|Valmet Oy|Papermaking machine having a single wire run and a double wire run over a downwardly curving dewatering box|
    FI51973C|1973-03-23|1979-01-05|Valmet Oy|PAPPERSMASKIN MED TVAO VIROR|
    FI56990C|1974-01-08|1980-05-12|Valmet Oy|FOERFARANDE FOER LOESGOERING AV EN I EN PAPER MACHINERY FRAMSTAELLD BANA FRAON VIRAN|
    FI72157C|1974-07-18|1987-04-13|Valmet Oy|Double viradel in paper machine.|
    FI313874A|1974-10-25|1976-04-26|Valmet Oy|
    FI70739C|1977-04-28|1986-10-06|Valmet Oy|BANBILDNINGSENHET VID FRAMSTAELLNING AV FLERSKIKTSKARTONG|
    US4125428A|1977-06-27|1978-11-14|The Black Clawson Company|Vertical twin wire paper machine|
    FI64958C|1978-02-07|1984-02-10|Valmet Oy|BANFORMARE WITH DOUBLE WIRE AND PAPER MACHINE|
    CA1144795A|1980-04-18|1983-04-19|Alexander Malashenko|Twin wire web former |
    AT379622B|1980-11-26|1986-02-10|Escher Wyss Gmbh|PAPER MACHINE WITH TWO MOVABLE WATERPROOF DRAINAGE BELTS, e.g. SEVEN|
    FI810373L|1981-02-10|1982-08-11|Valmet Oy|VIRAPARTI FOER EN PAPPERSMASKIN|
    DE3107730C2|1981-02-28|1984-08-02|J.M. Voith Gmbh, 7920 Heidenheim|Double wire section for a paper or board machine|FI75200B|1986-07-04|1988-01-29|Valmet Oy|FOERFARANDE VID PAPPERSFRAMSTAELLNINGSPROCESS FOER FOERBAETTRING AV EGENSKAPER HOS PAPPERET, SAERSKILT DESS RETENTION.|
    US5404653A|1987-02-13|1995-04-11|Beloit Technologies, Inc.|Apparatus for drying a web|
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    FI86652C|1989-04-19|1992-09-25|Tampella Oy Ab|Device in a paper machine for providing dewatering on the surface|
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    US5573643A|1992-01-17|1996-11-12|Valmet Corporation|Twin wire web former in a paper machine|
    FI92729C|1993-10-29|1994-12-27|Valmet Paper Machinery Inc|System for feeding a pulp to a multilayer inlet box and method of operating a multilayer inlet box|
    US6210535B1|1995-06-01|2001-04-03|Valmet Corporation|Stock feed system for a multi-layer headbox and method in the operation of a multi-layer headbox|
    FI110704B|1996-10-18|2003-03-14|Metso Paper Inc|Multilayer Headbox Mass Feeding System and Method for Multilayer Headboard Operation|
    US6375799B1|1999-01-28|2002-04-23|Voith Sulzer Papiertechnik Patent Gmbh|Process and apparatus for producing a fibrous material web|
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    PL225236B1|2003-12-22|2017-03-31|Asten Johnson Inc|Hybrid type forming section for a paper making machine|
    FI116628B|2004-02-13|2006-01-13|Metso Paper Inc|Multi-layer forming portion|
    FI116688B|2004-02-13|2006-01-31|Metso Paper Inc|Multi-layer forming portion|
    JP5518296B2|2008-03-31|2014-06-11|日本製紙株式会社|Offset printing paper manufacturing method and offset printing paper obtained by the manufacturing method|
    FI122398B|2008-06-19|2011-12-30|Metso Paper Inc|Method in connection with a paper machine and a paper machine|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI820742A|FI75375C|1982-03-02|1982-03-02|Path forming lot for paper machine.|
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