• 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:
    In a paper making machine, a method and apparatus for separating the web from the former wire and transferring the same to a transfer felt which preferably comprises a press felt wherein the web is carried by the former wire over a sector of a reverser roll so that it is subjected to a centrifugal force which tends to separate the web from the former wire and wherein the transfer felt is guided so that it engages the web over at least a portion of the sector of the reverser roll lapped by the web carrying former wire. An external suction is applied to the web through the transfer felt in the region of the sector of the reverser roll lapped by the web carrying former wire and engaged transfer felt which subjects the web to a suction force which acts in substantially the same direction as the centrifugal force. The transfer felt laps a grooved suction roll which cooperates with external suction applying apparatus for assisting and maintaining the web adhered to the transfer felt between at least two press nips, the suction applying apparatus communicating with the means for applying the external suction to the web.
    公开号:SU973034A3
    申请号:SU792778851
    申请日:1979-06-15
    公开日:1982-11-07
    发明作者:Канкаанпяя Матти
    申请人:Валмет Ой (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the pulp and paper industry, and more particularly to devices for transferring a web of paper from the mesh to the press 1 * * * part · of a paper machine. 5
    A device for separating the paper web from the forming wire and transfer it to a felt press section of a paper machine, comprising a suction chamber with two elements yn 0 lotnitelnymi recognizing one side of the packed-^ element and the reversing shaft mounted above the suction transfer cylinder with a grooved surface, covered by cloth and in contact with two press shafts; one of which has a grooved surface, and the other is smooth [1]. 2Q
    However, the known device is characterized by insufficient efficiency of transferring the paper web from the forming mesh to the press part.
    A rise of the invention is 25 shenie process efficiency.
    This goal is achieved by the fact that in the device for separating the paper web from the forming grid and transferring it to the cloth of the press part of the paper machine, containing a suction chamber with two sealing elements, adjacent to one side of the sealing element to the reversing shaft and mounted above the suction transfer cylinder with a grooved surface covered by cloth and in contact with two press rolls, one of which has a grooved surface, and the other a smooth, sealing element the ment located on the side of the reversing shaft is made in the form of a suction shoe with an inlet connected to the vacuum chamber and the outlet openings communicating with it located on the side of the reversing shaft.
    The suction shoe has a housing, a strap installed therein and elastic tubular elements mounted between the strap and the housing, with outlet openings made in the strap.
    The suction shoe is mounted with the possibility of regulating its position relative to the reversing weight.
    In FIG. 1 is a diagram of the forming and press parts of paper3 of the making machine; in FIG. 2 - a device for separating the web; in FIG. 3 is an embodiment of a suction shoe.
    The forming section of a paper machine with two nets includes 5 a loop 1 formed by a covering net and a loop 2 formed by a supporting net.
    The movement and tension of the covering net 1 is controlled and regulated by 10 chamber rollers 3 and guide rollers 4. From the headbox 5, the paper pulp is fed to the covering net 1. Inside the loop 1 formed by the net, there is a net table 6 supporting the net-15 in the place where the stream of paper pulp hits the mesh 1.
    Inside the loop 2 formed by the support grid, there are shafts 7 and jq
    8, which may refer to any structure commonly used in double-mesh frames. The movement and tension of the mesh 2 is controlled and regulated by guide rollers
    9. Inside the loop 2, formed by the support grid, there is a reversing shaft 10. The mesh pit is designed for wet scrap, which is formed at the start-up stage of the paper machine. thirty
    The press part includes a suction transfer cylinder 1-1, water. 'assembled pressure rollers 12 and 13, preferably with a notched surface and a smooth-surface shaft 14, 35 preferably a stone shaft, Equipped with a doctor blade 15, as well as a pit 16 for marriage. The shafts 11, 12 and 13 act inside the loops formed by their cloth 17, 18 and 19. The rollers 20 serve ► 40 to guide and tension the cloth (Fig. 1).
    The suction transfer cylinder (FIG. 2) 11 has a grooved surface 45. The paper web transfer device has a suction chamber 21 with two sealing elements 22 and 23 adjacent to one side of the sealing element 22 to the reverse shaft 10 and mounted above the cylinder 11. The sealing element 22 is made in the form of a suction shoe with an inlet ^ 24 connected to a vacuum chamber 21, and outlet openings 25 connected to it, located on the side of the reversing shaft 10. According to an embodiment (Fig. 3), the suction shoe has a housing 26, a plank 60 installed therein 27 with outlet openings 25 and tubular elements 28 connected to a pressure source and installed between the housing 26 and the strip 27. The suction shoe can be installed 65 with the possibility of adjusting its position relative to the reversing shaft.
    The device operates as follows.
    Formed between the grids 1 and 2, the paper web 29 is separated from the support grid 2 by means of a reversing shaft 10, covered with its grid 2 throughout the sector, in which, a. more precisely, in sector L, net 2 and paper web 29 together change the direction of movement, and centrifugal force acts on the paper web so that it is separated from net 2. In sector F, cloth 17, which also functions as a portable cloth, includes in contact with the paper web 29 so that the support net 2, the paper web 29 and the cloth 17 together form a three-layer structure in the sector from the shaft 10. You can change the width of the sector O) by adjusting the roller 20. Separating the paper web 29 from the net-2 way It is the pressure difference created by the sealing element 22, made in the form of a suction-shoe. Another contributing factor is the centrifugal force acting on the web in sector L. Next, the paper web is fed to the press clamps formed by the shafts 11-14 to dehydrate it.
    The proposed design and installation of the vacuum chamber and its seals can improve the efficiency of the device.
    权利要求:
    Claims (2)
    [1]
    The invention relates to the pulp and paper industry, specifically, to devices for transferring webs to paper from the net to the press section — a papermaking machine. A device for separating a web of paper from a forming fabric and transferring it to the felt of the press section of a papermaking machine, comprises a suction chamber with two sealing elements, a racter, one side with a sealed element to the reversing shaft and mounted above the suction surface of a transfer cylinder with a grooved surface covered by a removable shaft with a piece of a body. and in contact with two press shafts: one of which has a grooved surface and the other is smooth. However, for a known device, weeks are characteristic. sufficient transfer efficiency of the paper web from the forming wire to the press section. The aim of the invention is to increase the efficiency of the process. The goal is achieved by the fact that in a device for separating a paper web from a forming fabric and transferring it to a press press sheet, a papermaking belt containing a suction chamber with two sealing elements, adjacent to one side with a sealing element, is connected to a reversing shaft and mounted above the suction transfer gear a cylinder with a grooved surface covered by the cloth and in contact with two press shafts, one of which has a grooved surface and the other is smooth, the sealant th element disposed with storny reversing shaft, is designed as a vsasyvakedego shoe with an inlet connected to the vacuum chamber and communicating with it outlet apertures located toward the reversing shaft. The suction shoe has a body, a bar installed therein and elastic tubular elements mounted between the bar and the body, with the outlets being made in the bar. The suction shoe is installed with the possibility of adjusting its position relative to the reversible valve. FIG. 1 shows a diagram of the forming and pressing parts of the paper machine; in fig. 2 - a device for separating the web; in fig. 3 shows an embodiment of the intake bstsimak. The molding section of the papermaking machine with two grids includes a loop I formed by the overlaying mesh and a loop 2 formed by the supporting mesh. The movement and tension of the covering grid 1 is controlled and regulated by the chamber roller 3 and the guide rollers 4. From the pressure box 5, the paper pulp is fed to the covering grid 1. Inside the loop 1 formed by the grid, there is a grid table 6 supporting the grid in that place where the pulp impinges on the net 1. Inside the hinge 2, formed by a support grid, are shafts 7 and 8, which can refer to any design commonly used in two-grid frames. The movement and tension of the net 2 is controlled and adjusted by the guide rollers 9. Inside the loop 2 formed by the support net, a reversing shaft 10 is arranged. The net mate is intended for wet rejects, which is formed at the starting stage of the papermaking mill. The press section includes a suction transfer cylinder 1-1, catchment pressure rollers 12 and 13, preferably with a notched surface, and a shaft 14 with a smooth surface, preferably a stone shaft. Equipped with a squeegee 15, as well as mu 16 for marriage. Shafts 11, 12, and 13 act inside the loops formed by their cloth 17, 18, and 19. The rollers 20 serve to guide and tension the cloth (Fig. 1). The suction transfer cylinder (fig, 2) 11 has a grooved surface. The device for transferring the paper web has a suction chamber 21 with two sealing elements 22 and 23 adjacent to the reversing shaft 10 on one side with the sticking element 22 and mounted over the cylinder 11. The sealing element 22 is designed as an intake strap with an inlet opening 2 4 connected to the vacuum chamber 1 21, and communicating with it the outlet openings 25 located on the side of the reversing shaft 10. According to the embodiment (Fig. 3), the suction shoe has a housing 26, a plan 27 installed therein outlet apertures 25 and tubular members 28 are connected to a pressure source and mounted between the housing 26 and the strap 27. The suction shoe can be mounted vozmozhnostyuregulirovani its position relative to the reversing shaft. The device works as follows. The paper web 29 formed between the grids I and 2 is separated from the supporting grid 2 by means of a reversing shaft 10 covered with its grid 2 for sector fl, in which, more precisely, in sector L, the grid 2 and the paper web 29 together the direction of movement is changed, and the centrifugal force acts on the paper web in such a way that it separates from the mesh 2. In the sector IW, 17, which also functions as a portable cloth, comes into contact with the paper web 29 so that the supporting mesh 2 , paper web 29 and cloth 17 Steps form a three-layer structure in sector U) of the shaft 10. The sector width can be varied (Vc by adjusting the roller 20. Separating the paper web 29 from the mesh. 2 contributes to the pressure difference created by the sealing element 22, made in the form of a suction pad. is the centrifugal force acting on the web in sector B. Next, the paper web is fed to the press clamps formed by the shafts 11-14 to dehydrate it. t The proposed design and installation of the vacuum chamber and its seals improves the efficiency of the device. Claim 1. A device for separating a web of paper from a forming fabric and transferring it to the press belt of a papermaking machine containing a vacuum chamber with two sealing elements adjacent one side with a winding element to the reversing shaft and mounted above the suction transfer cylinder with a grooved surface covered cloth and the contacting two press rolls, one of which has a grooved surface, and the other smooth, is different. In order to increase the efficiency of the process, the sealing element located on the side of the reversing shaft is made in the form of a suction shoe with an inlet opening connected to the vacuum chamber and connected with it to the outlet openings located on the side of the reversing shaft.
    [2]
    2. The device according to claim 1, which includes the fact that the suction shoe has a body “a bar installed therein and elastic tubular elements mounted between the bar and the body, while the outlets are made in the bar.
    3, a device in accordance with Claims 1 and 2, characterized in that the suction shoe is installed with the possibility of adjusting its position relative to the reversing shaft.
    Sources of information taken into account in the examination
    1. USSR author's certificate in application 2673557 / 29-12, 10.10.78.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU973034A3|1982-11-07|Device for separating paper web from forming wire and for its transfer to pressing felt of paper-making machine
    US4483745A|1984-11-20|Method and apparatus of sheet transfer using a nonporous smooth surfaced belt
    CA2113849C|1999-01-19|Method and apparatus for removing water from a web by means of presses
    US4144124A|1979-03-13|Machine for manufacturing paper such as tissue paper
    CA1062941A|1979-09-25|Paper machine, in particular one for manufacturing tissue paper
    US4406739A|1983-09-27|Guide roll and suction box for twin-wire forming system
    US4055461A|1977-10-25|Paper machine with single-wire and curved twin-wire formers
    US4257844A|1981-03-24|Press section arrangement
    US3691010A|1972-09-12|Method and apparatus for dewatering paper webs
    US2784652A|1957-03-12|Paper machine dryer assembly
    CA2109781A1|1994-05-25|Press section for a paper machine
    US2209757A|1940-07-30|Felt arrangement for horizontal press roll assemblies
    US3257268A|1966-06-21|Paper pressing process and apparatus utilizing water receiving belt
    GB1589800A|1981-05-20|Tissue paper-making machine
    US2672078A|1954-03-16|Suction press assembly
    EP0160615A2|1985-11-06|Top wire former
    US3326745A|1967-06-20|Apparatus for forming paper between a forming wire and felt
    US2881670A|1959-04-14|Apparatus and method for de-watering stock on a fourdrinier type paper or board-making machine
    US3378435A|1968-04-16|Felt and fabric press type papermaking machine
    JPH07109689A|1995-04-25|Wet-type press for paper manufacturing machine
    US2694347A|1954-11-16|Suction press roll arrangement
    EP0845059B1|2001-04-11|A paper machine for manufacturing a web of soft crepe paper
    US5338408A|1994-08-16|Paper forming unit with two dandy rolls
    SU929773A1|1982-05-23|Press for dewatering fibrous material web
    US2744453A|1956-05-08|Reverse press assembly
    同族专利:
    公开号 | 公开日
    FI60897C|1982-04-13|
    FI781934A|1979-12-17|
    IT7923653D0|1979-06-15|
    FR2428703B3|1982-05-07|
    CA1121196A|1982-04-06|
    ATA387679A|1983-02-15|
    SE7905276L|1979-12-17|
    GB2023203B|1983-03-16|
    DE2920713A1|1979-12-20|
    BR7903686A|1980-02-05|
    FI60897B|1981-12-31|
    GB2023203A|1979-12-28|
    FR2428703A1|1980-01-11|
    AT372429B|1983-10-10|
    IT1121438B|1986-04-02|
    DE2920713C2|1983-01-05|
    US4236962A|1980-12-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA558304A|1958-06-03|Holden Herbert|Paper-making machines|
    DE1117992B|1957-04-05|1961-11-23|Voith Ag J M|Device for automatic transfer of the wet paper web in the paper machine from the suction roll to the removal cloth|
    GB1530246A|1976-04-14|1978-10-25|Valmet Oy|Method of and means for detaching and conducting a paper web in a paper-making machine|
    GB1574341A|1976-09-13|1980-09-03|Valmet Oy|Method of and means for applying suction to a web suspension layer felt forming wire or assembly of such in a paper-making machine|
    FI772990A|1977-10-11|1979-04-12|Valmet Oy|FOERFARANDE OCH ANORDNING I EN PAPPERSMASKIN FOER LOESGOERING AV BANAN FRAON FORMERINGSVIRAN OCH DESS FRAMLEDNING SOM SLUTEN OEVERFOERING TILL PAPPERSMASKINENS PRESSDEL|DE3425077C2|1984-05-25|1991-06-20|Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De|
    US5404653A|1987-02-13|1995-04-11|Beloit Technologies, Inc.|Apparatus for drying a web|
    US5507104A|1987-02-13|1996-04-16|Beloit Technologies, Inc.|Web drying apparatus|
    US6049999A|1987-02-13|2000-04-18|Beloit Technologies, Inc.|Machine and process for the restrained drying of a paper web|
    US5087325A|1991-03-13|1992-02-11|Beloit Corporation|Apparatus for manufacturing a dried web of paper|
    DE4116222A1|1991-05-17|1992-11-19|Voith Gmbh J M|RAILWAY APPARATUS|
    US5328569A|1992-06-26|1994-07-12|Beloit Technologies, Inc.|Curved suction box apparatus in a papermaking machine press section|
    US5609728A|1995-03-24|1997-03-11|James River Corporation Of Virginia|Method and apparatus for transferring a web from a forming wire to a transferring felt in a paper making machine|
    US5741402A|1996-09-03|1998-04-21|The Procter & Gamble Company|Vacuum apparatus having plurality of vacuum sections for controlling the rate of application of vacuum pressure in a through air drying papermaking process|
    US5725734A|1996-11-15|1998-03-10|Kimberly Clark Corporation|Transfer system and process for making a stretchable fibrous web and article produced thereof|
    US6447641B1|1996-11-15|2002-09-10|Kimberly-Clark Worldwide, Inc.|Transfer system and process for making a stretchable fibrous web and article produced thereof|
    SE512026C2|1998-05-15|2000-01-17|Valmet Corp|Machine for making paper or cardboard|
    US7278187B2|2004-08-27|2007-10-09|Dan-Web Holding A/S|Manufacture of a multi-layer fabric|
    FI119029B|2006-01-30|2008-06-30|Metso Paper Inc|Method and apparatus in the drying section of a fiber web machine such as a paper or board machine|
    WO2009065433A1|2007-11-19|2009-05-28|Metso Paper, Inc.|Method and device for transferring a paper web from a supporting woven fabric to another|
    CN102277770B|2007-11-19|2014-10-15|维美德技术有限公司|Suction box for transmitting|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI781934A|FI60897C|1978-06-16|1978-06-16|FOERFARANDE OCH ANORDNING I EN PAPPERSMASKIN FOER LOESGOERING AV BANAN FRAON EN FORMNINGSVIRA OCH FOER OEVERFOERING AV DENSAMMA TILL EN TILL PRESSPARTIET HOERANDE VAEVNAD|
    [返回顶部]