公开(公告)号：US5019213A

公开(公告)日：1991-05-28

申请号：US513544

申请日：1990-04-24

申请人： Raimo Virta ,  Vesa Vuorinen ,  Reijo Ruottu

发明人： Raimo Virta ,  Vesa Vuorinen ,  Reijo Ruottu

IPC分类号： D21F5/04 ,  D21F7/00 ,  D21G9/00

CPC分类号： D21G9/0072 ,  D21F5/042

摘要： A method and apparatus in a drying section of a paper making machine wherein a so-called single-wire draw is applied and wherein blow boxes (20) are used, which are intended to prevent phenomena that disturb the mutual support contact between the web (W) and the drying wire (12). The blow boxes (20) extend across the entire width of the web (W), and they communicate with members (17, 18, 21, 22) that supply blow air, and they are provided with at least two nozzle slots (13, 14) transverse to the running and longitudinal direction of the web (W) as well as with a carrier face (16) between said nozzle slots. Negative pressure is produced in the space (A-) defined by the carrier face (16) and the drying wire (12) by means of the ejection and prevention effects of the air jets (F.sub.1, F.sub.2) blown through the nozzle slots (13,14). In order to speed the threading of the web (W), in the blow boxes (20) the blow sections (24.sub.k+1. . . 24.sub.N ) that remain outside the transverse area (A) of the leader band (R) are closed. The blowing, which has thereby been intensified, is applied through both of the opposite nozzles (13, 14) of the blow boxes (20) in connection with the threading only within the area (A) comprising the width (L.sub.R) of the leader band (R).

摘要翻译： 在造纸机的干燥部分中的方法和装置，其中应用了所谓的单线牵引，并且其中使用了吹风箱（20），其旨在防止干扰纸幅之间的相互支撑接触的现象（ W）和干燥丝（12）。 吹风箱（20）跨越卷筒纸（W）的整个宽度延伸，并且它们与供应吹风空气的构件（17,18,21,22）连通，并且它们设置有至少两个喷嘴槽（13， 横向于卷筒纸（W）的运行和纵向方向以及在所述喷嘴槽之间的承载面（16）。 通过由喷嘴槽（13）吹出的空气射流（F1，F2）的喷射和防止效果，在由载体面（16）和干燥线（12）限定的空间（A-）中产生负压 ，14）。 为了加速卷筒纸（W）的穿线，在吹风箱（20）中，保持在引导带（R）的横向区域（A）外侧的吹风部分（24k + 1 ... 24N）被关闭 。 因此，通过与吹风箱（20）的相对的喷嘴（13,14）的两个喷嘴（13,14）相连接，仅在包括引导件的宽度（LR）的区域（A）的区域 带（R）。

公开(公告)号：US06358366B1

公开(公告)日：2002-03-19

申请号：US09601261

申请日：2000-08-25

申请人： Pertti Hongisto ,  Paavo Sairanen ,  Time Tammekas ,  Raimo Virta

发明人： Pertti Hongisto ,  Paavo Sairanen ,  Time Tammekas ,  Raimo Virta

IPC分类号： D21F700

CPC分类号： D21G9/0063

摘要： A system and method effectively threading the moist tail of a web through a pulp dryer. A tail threading belt in a closed loop passes the tail of the web through the dryer, and the most tail of the web is transferred from a support wire in the press section of a pulp machine to the tail threading belt. Transfer may be effected using a suction roll with a suction sector and a blower sector, or by using a suction chamber having a perforated escort belt which cooperates with it to engage the tail section on the wire and fully support it during transfer to the threading belt. The threading belt may be folded over to contain the tail web inside it while it passes through the dryer.

摘要翻译： 一种系统和方法通过纸浆干燥器有效地穿过网的湿尾。 封闭环中的尾部穿线带使幅材的尾部穿过干燥器，并且幅材的最末端从纸浆机的压榨部分中的支撑线传送到尾部带皮带。 可以使用具有抽吸扇区和鼓风机扇区的抽吸辊进行转移，或者通过使用具有穿孔保护带的抽吸室，其与其配合以与导线上的尾部接合，并在传递到穿线带期间完全支撑 。 当穿过皮带穿过干衣机时，可以将穿线带折叠起来以将尾巴包围。

公开(公告)号：US06247247B1

公开(公告)日：2001-06-19

申请号：US09420760

申请日：1999-10-20

申请人： Seppo Yömaa ,  Matti Kurki ,  Raimo Virta ,  Reijo Jokinen ,  Hannu Kokkala

发明人： Seppo Yömaa ,  Matti Kurki ,  Raimo Virta ,  Reijo Jokinen ,  Hannu Kokkala

IPC分类号： F26B700

CPC分类号： D21F5/042 ,  D21F5/046

摘要： A blow box used in the drying section of a papermaking machine and a method for sealing a pocket provided with a blow box, and a blow nozzle. The blow box is arranged to eject air away from the space between a wire and the blow box and/or maintain an underpressure zone in this space. In the interface between the desired underpressure zone and an outside volume, the blow box is provided with a sealing element, such as a blow nozzle, protruding towards the wire to a certain distance “d” seen from the wire, for forming a seal between the underpressure zone and the area remaining outside the underpressure zone. The sealing element is connected to the blow box so that the element may be moved away from the wire to a distance “D” by a push and/or by an actuator, the distance “D” being greater than the distance “d”.

摘要翻译： 在造纸机的干燥部中使用的吹风机以及设置有吹风箱的袋的密封方法以及吹塑喷嘴。 吹风箱布置成将空气从电线和吹风箱之间的空间排出，和/或在该空间内保持负压区。 在所需的负压区域和外部容积之间的界面中，吹风箱设置有诸如吹嘴的密封元件，其从导线看向一定距离“d”突出，用于在线之间形成密封， 负压区和欠压区外的区域。 密封元件连接到吹风箱，使得元件可以通过推动和/或由致动器移动远离线距离“D”，距离“D”大于距离“d”。

公开(公告)号：US5524360A

公开(公告)日：1996-06-11

申请号：US219651

申请日：1994-03-29

申请人： Raimo Virta ,  Vesa Vuorinen

发明人： Raimo Virta ,  Vesa Vuorinen

IPC分类号： D21F5/04 ,  F26B13/10 ,  F26B3/00

CPC分类号： D21F5/046

摘要： A method and apparatus for ventilating pocket spaces in a multi-cylinder dryer of a paper machine, in particular a high-speed paper machine whose running speed is higher than about 800 meters per minute, in the area of a so-called twin-wire draw. In the twin-wire draw, the drying cylinders in the drying group are arranged in two rows placed one above the other, in which rows the successive cylinders are placed in the upper row and in the lower row as interlocked. In each cylinder group, there are two drying wires, an upper wire and a lower wire for pressing the paper web against heated faces of the drying cylinder while being guided by guide rolls placed in gaps between the cylinders. The paper web runs as free draws between the rows of cylinders. Pocket spaces are formed in the area between the free draws of the web and the upper wire and its guide roll and the drying cylinder in the lower row and, in a corresponding manner, adjacent pocket spaces are formed in the area between the free draws of the web, the lower wire, its guide roll, and the drying cylinder in the upper row. The pocket spaces are ventilated by pumping air induced by the wire in the multi-cylinder dryer, wherein, at the inlet side of the guide roll, the wire pumps air into the pocket spaces through the wire and wherein the wire pumps air out of the pocket spaces at the outlet side of the guide roll of the wire. Air being pumped out through the wire on its run at the outlet side from the guide roll to the following cylinder is limited as compared with free pumping-in and pumping-out so as to control the pressure level and/or the flow status in the pocket spaces.

摘要翻译： 一种用于在造纸机的多气缸干燥器中通风的空间的方法和装置，特别是运行速度高于约800米/分钟的高速造纸机，在所谓的双线 画。 在双线牵引中，干燥组中的干燥筒布置成两列，一排一个放置在一起，其中连续的气缸以互锁的方式放置在上排和下排中。 在每个气缸组中，存在两个干燥线，上部线和下部线，用于在被布置在气缸之间的间隙中的引导辊引导时将纸幅压靠在干燥筒的加热面上。 纸幅在圆柱体之间作为自由绘制。 口袋空间形成在纸幅的自由牵引和上线及其引导辊和下排中的干燥筒之间的区域中，并且以相应的方式形成相邻的袋状空间， 纸幅，下线，其导辊和上排的干燥筒。 通过在多缸干燥器中抽吸由导线引起的空气来对袋口空间进行通风，其中，在导向辊的入口侧，电线泵通过电线空气进入袋状空间，并且其中电线泵从 导线辊出口侧的口袋空间。 与自由泵入和抽出相比，空气在其从出口侧的从导向辊到下一个气缸的运行中被抽出是有限的，以便控制压力水平和/或流动状态 口袋空间。

公开(公告)号：US4892622A

公开(公告)日：1990-01-09

申请号：US87400

申请日：1987-08-20

申请人： Raimo Malkki ,  Paavo Jaatinen ,  Timo Haverinen ,  Pekka Eskelinen ,  Juhani Jokinen ,  Vesa Vuorinen ,  Raimo Virta ,  Martti Salmivaara

发明人： Raimo Malkki ,  Paavo Jaatinen ,  Timo Haverinen ,  Pekka Eskelinen ,  Juhani Jokinen ,  Vesa Vuorinen ,  Raimo Virta ,  Martti Salmivaara

IPC分类号： D21F1/02 ,  D21F1/00 ,  D21F9/02

CPC分类号： D21F9/02 ,  D21F1/009

摘要： A method of and arrangement for resisting formation of undulations in a fiber/water mixture supplied onto a forming wire at an open planar wire section of a paper-making machine include establishing over the wire an air curtain extending over the full breadth thereof, in the region of which the air mass upon the wire is set in motion. The direction of movement of the air mass is the same as the traveling direction of the wire, and the velocity of the air substantially equals the speed of the wire. The air curtain commences on the planar wire section, in the machine direction, only at a given distance from a lip slice of a headbox of the machine, and the air curtain extends along the traveling direction of the web over the planar wire section over a given distance.

摘要翻译： 在制纸机的开放平面线部分处提供给成形线上的纤维/水混合物中形成波纹的方法和装置包括在线上设置在其整个宽度上延伸的气帘， 导线上的空气质量被设定为运动的区域。 空气质量的移动方向与导线的行进方向相同，空气的速度基本上等于电线的速度。 空气幕在平面线部分上在机器方向上仅在与机器的流浆箱的唇形片一定距离处开始，并且空气幕沿着平面线部分上的幅材的行进方向延伸超过一个 给定距离

公开(公告)号：US4756183A

公开(公告)日：1988-07-12

申请号：US36596

申请日：1987-04-18

申请人： Raimo Rajala ,  Raimo Virta

发明人： Raimo Rajala ,  Raimo Virta

IPC分类号： G01N15/08

CPC分类号： G01N15/082

摘要： Method and Apparatus for Measuring Permeability to Air of a Wall-Like or Sheet-Like Element, comprising the use of a measurement head including a blower having an air-discharge nozzle, a blade wheel and a variable-speed motor for rotating the wheel to produce an air flow which discharges through the nozzle. Pressure in the blower and speed of blade wheel rotation are detected, with appropriate signals indicative thereof being input to a central unit which then appropriately adjusts speed of rotation of the blade wheel to correspond to a predetermined blower pressure value. Permeability value of the element is then determined at the central unit, based on relationship between the speed measurement signal values, and corresponding permeability values.

摘要翻译： 用于测量壁状或片状元件的空气渗透性的方法和装置，包括使用包括具有排气喷嘴的鼓风机的测量头，用于将车轮旋转的叶轮和变速马达 产生通过喷嘴排出的空气流。 检测鼓风机压力和叶轮旋转速度，其中指示的适当信号被输入到中央单元，然后适当地调节叶轮的旋转速度以对应于预定的鼓风机压力值。 然后根据速度测量信号值和相应的磁导率值之间的关系，在中央单元确定元件的渗透性值。

公开(公告)号：US06317999B1

公开(公告)日：2001-11-20

申请号：US09686762

申请日：2000-10-12

申请人： Raimo Virta ,  Reijo Jokinen ,  Hannu Kokkala

发明人： Raimo Virta ,  Reijo Jokinen ,  Hannu Kokkala

IPC分类号： D06F5800

CPC分类号： D21F5/042

摘要： A sealing nozzle is positioned in a blow box used in the drying section of a paper machine. The blow box is mounted on that side of the supporting fabric, which is away from the web at the opening gap between the supporting fabric and the cylinder and at a distance “D” from the supporting fabric. A passage is formed between the blow box and the supporting fabric, the passage having a negative pressure region having a border with a region outside the negative pressure region. The sealing nozzle is positioned in a wall of the blow box facing the passage at a distance “d” from the supporting fabric. The sealing nozzle includes: a pivotal sealing member mounted at the border, and a transverse support element, the sealing member pivotal about the transverse support element; and a separate nozzle part having at least one nozzle opening (e. g. a substantially transverse slit) and disposed in the negative pressure region in front of the pivotal sealing member, the separate nozzle part positioned so that the at least one nozzle opening blows air along a surface of the sealing member from the negative pressure region to the region outside the negative pressure region.

摘要翻译： 密封喷嘴位于造纸机的干燥部中使用的吹风箱中。 吹风箱安装在支撑织物的一侧，该支撑织物在支撑织物和圆柱体之间的开口间隔离离网幅距离支撑织物距离“D”。 在吹风箱和支撑织物之间形成通道，该通道具有与负压区域外部的区域具有边界的负压区域。 密封喷嘴定位在吹气箱的面向通道的壁上距离支撑织物距离“d”处。 密封喷嘴包括：安装在边界处的枢转密封构件和横向支撑元件，密封构件围绕横向支撑元件枢转; 以及单独的喷嘴部分，其具有至少一个喷嘴开口（例如基本上横向的狭缝），并且设置在位于枢转密封件前面的负压区域中，所述单独的喷嘴部分定位成使得至少一个喷嘴开口沿着 密封构件的表面从负压区域到负压区域外的区域。

公开(公告)号：US5535527A

公开(公告)日：1996-07-16

申请号：US477427

申请日：1995-06-07

申请人： Raimo Virta ,  Seppo Rantanen

发明人： Raimo Virta ,  Seppo Rantanen

IPC分类号： D21F5/04 ,  F26B11/02

CPC分类号： D21F5/042

摘要： A method for causing adherence of a web to a drying wire so as to prevent the effects of centrifugal forces and of other air-flow phenomena, which effects attempt to separate the web from the drying wire in dryer groups having a single-wire draw and arranged in a multi-cylinder dryer of a paper machine. The dryer groups include heated drying cylinders, a drying wire for pressing the web against outer cylinder faces of the drying cylinders, and guide cylinders or rolls on which the web runs on the outside face of the drying wire. The guide cylinders have perforations which pass through the cylinder mantle and open into an inside space in the interior of the guide cylinders which is subjected to a vacuum. The vacuum in the guide cylinders is transferred to the outside face through the perforations. The guide cylinders have shafts on which the guide cylinders are mounted revolving. The vacuum level in the guide cylinders is regulated by means of the air quantity in compliance with the threading/running stage and/or running speed and/or with any other process or running parameter of the dryer section of the paper machine so that the effect of the vacuum is sufficient to keep the web in reliable contact with the drying wire.

摘要翻译： 一种使网状物粘附到干燥丝线上的方法，以防止离心力和其它空气流动现象的影响，这些现象影响了在具有单丝牵引的干燥器组中将卷筒纸与干燥丝分离， 布置在造纸机的多缸干燥机中。 干燥器组包括加热的干燥筒，用于将幅材压靠在干燥筒的外筒面上的干燥丝，以及在烘干线的外表面上运行纸幅的导向滚筒或辊。 引导圆筒具有穿过圆筒套并穿过导向圆筒内部的内部空间的穿孔，所述内部空间经受真空。 引导筒中的真空通过穿孔传递到外表面。 引导圆筒具有轴，滚筒上安装有旋转的轴。 引导缸中的真空水平通过与穿线/运行阶段和/或运行速度和/或造纸机的干燥器部分的任何其它过程或运行参数相一致的空气量来调节，使得效果 的真空度足以使幅材与干燥丝线保持可靠的接触。

公开(公告)号：US4628618A

公开(公告)日：1986-12-16

申请号：US702621

申请日：1985-02-19

申请人： Raimo Virta ,  Martti Salmivaara

发明人： Raimo Virta ,  Martti Salmivaara

IPC分类号： D21F1/00 ,  D21F5/04 ,  F26B13/08

CPC分类号： D21F5/042

摘要： In the drying section of a paper machine, apparatus for preventing conditions tending to deteriorate the contact between a web and a supporting fabric which carries the web from a drying cylinder in one line to a drying cylinder in another line and, in particular, for preventing a positive pressure from being generated in the narrowing gaps defined by the surfaces of the drying cylinders and the web supporting fabric as it approaches and/or moves away from the drying cylinder. The apparatus includes a blow box extending transversely substantially over the width of the web, the blow box including at least two transversely extending gas discharge slots between which a substantially planar carrying surface is provided in opposed, parallel relationship to the web carrying fabric and spaced a distance therefrom which is at least twice, and preferably ten to thirty times, as large as the width of a gas discharge slot.

摘要翻译： 在造纸机的干燥部分中，用于防止条纹倾向于使纤维网和支撑织物之间的接触劣化的设备，所述织物和支承织物将纤维网从一行的干燥筒传送到另一条线中的干燥筒，特别是用于防止 在由干燥筒和幅材支撑织物的表面限定的狭窄间隙中产生的正压力在接近和/或远离干燥筒时移动。 该装置包括横向延伸大致超过幅材宽度的吹风箱，该吹风箱包括至少两个横向延伸的气体排放槽，在该排气槽之间提供基本上平面的承载表面，该表面与卷筒纸承载织物相对并联， 距气体排出口的宽度的至少两倍，优选为十到三十倍。