System for reducing blistering of a wet paper web on a yankee dryer

    公开(公告)号:US5569359A

    公开(公告)日:1996-10-29

    申请号:US412300

    申请日:1995-03-28

    申请人: John R. Joiner

    发明人: John R. Joiner

    IPC分类号: D21F5/04 D21F5/18

    CPC分类号: D21F5/042 D21F5/044

    摘要: Blistering of a wet paper web upon a yankee dryer drum is controlled by directing compressed dry air toward the wet paper web in the space between a pressure roll external of the yankee dryer hood and the entry opening between the dryer hood and the yankee dryer drum. The flow of compressed air is controlled so that air flow can be modified across the full width of the wet paper web.

    Dry end with open reversal place
    72.
    发明授权
    Dry end with open reversal place 失效
    干端与开放的反转位置

    公开(公告)号:US5564197A

    公开(公告)日:1996-10-15

    申请号:US222841

    申请日:1994-04-05

    CPC分类号: D21F5/042

    摘要: The dry end of a paper machine comprises a first dryer group with top drying cylinders, with a first drying wire and with bottom deflection suction rolls. Adjacent this, there is a second dryer group with bottom drying cylinders, with a second drying screen and with top deflection suction rolls. In this way, both sides of the web to be dried come, in succession, into direct contact with the drying cylinders. At the place where the web changes from the first drying wire to the second drying wire, there is a transfer suction roll which lies within the loop of the second support belt. The web travels there from the last cylinder of the first dryer group over an at least approximately straight travel path to the transfer suction roll and thus onto the second support belt.

    摘要翻译: 造纸机的干燥末端包括具有顶部干燥筒的第一干燥器组,第一干燥丝和底部偏转吸辊。 与此相邻,有一个第二干燥器组,底部干燥筒,第二个干燥筛和顶部偏转吸辊。 以这种方式,要干燥的幅材的两侧依次与干燥筒直接接触。 在纸幅从第一干燥线改变到第二干燥线的位置处,存在位于第二支撑带的环内的转印抽吸辊。 纸幅从第一干燥器组的最后一个圆柱体到达传送抽吸辊的至少近似直线的行进路径并因此传送到第二支撑带上。

    Blow device for a dryer section of a paper machine
    73.
    发明授权
    Blow device for a dryer section of a paper machine 失效
    造纸机烘干机吹瓶装置

    公开(公告)号:US5557863A

    公开(公告)日:1996-09-24

    申请号:US420751

    申请日:1995-04-12

    申请人: Hannu Kokkala

    发明人: Hannu Kokkala

    IPC分类号: D21F5/04 F26B9/00

    CPC分类号: D21F5/042

    摘要: A blow device for a dryer section of a paper machine in which an air blowing is produced to support the paper web or equivalent. The device includes structure for defining an interior air space into which the air to be blown is passed through a duct communicating therewith and nozzle openings through which the air is blown to support the paper web or equivalent. The device also includes sets of equalizing plates through which the air is passed out of the air space into separate chamber spaces from which the air is passed into the nozzle openings.

    摘要翻译: 一种用于造纸机的干燥部的吹风装置,其中产生吹风以支撑纸幅或等同物。 该装置包括用于限定内部空气空间的结构,待吹送的空气通过其与其连通的管道和喷嘴孔,空气通过该开口吹送以支撑纸幅或等同物。 该装置还包括一组平衡板,空气通过该平衡板从空气空间流出到分离的室空间中,空气从该空间进入喷嘴开口。

    Dryer section of a paper machine including cylinder groups with
single-wire draw
    74.
    发明授权
    Dryer section of a paper machine including cylinder groups with single-wire draw 失效
    造纸机的干燥机部分,包括带单丝拉丝的圆筒组

    公开(公告)号:US5553393A

    公开(公告)日:1996-09-10

    申请号:US410090

    申请日:1995-03-24

    IPC分类号: D21F5/04 F26B11/02

    CPC分类号: D21F5/042

    摘要: A dryer section of a paper machine including cylinder groups provided with single-wire draw having smooth-faced heated drying cylinders against which a web to be dried enters into direct contact, and reversing rolls. The groups with single-wire draw have a drying wire which is guided in a loop by guide rolls as well as by the drying cylinders and the reversing rolls so that the drying cylinders are placed outside the wire loop, and the reversing rolls are situated in gaps between the drying cylinders inside the drying-wire loop. In order to optimize the drying capacity calculated per unit of length of the dryer section in the machine direction, as the drying makes progress, a different ratio of the drying cylinder diameter to the reversing roll diameter is employed, so that, in the first group or groups in the initial end of the dryer section, the ratio is higher than the corresponding ratio in the groups in the middle area of the dryer section. In the group or groups in the final end of the dryer section, a diameter ratio is used that is higher than the ratio in the middle area of the dryer section.

    摘要翻译: 一种造纸机的干燥部,其包括具有单丝拉丝的圆筒组,其具有平滑加热的干燥滚筒,待干燥的卷材直接接触到该滚筒,以及反向辊。 具有单线牵引的组具有干燥线,其通过导向辊以及由干燥滚筒和反向辊在环路中引导,使得干燥滚筒放置在线环外部,并且反转辊位于 干燥线环内干燥筒之间的间隙。 为了优化干燥部在机器方向上的每单位长度计算的干燥能力,随着干燥的进行,采用干燥筒直径与反向辊直径的不同比例,使得在第一组 或组在干燥部的初始端,该比率高于干燥部的中间区域中的组中的相应比例。 在干燥部的最终端的组或组中,使用比干燥部的中间部的比例高的直径比。

    Method and device for ensuring the run of the web in the multi-cylinder
dryer of a papermachine
    75.
    发明授权
    Method and device for ensuring the run of the web in the multi-cylinder dryer of a papermachine 失效
    用于确保纸张在造纸机的多缸干燥机中运行的方法和装置

    公开(公告)号:US5475934A

    公开(公告)日:1995-12-19

    申请号:US318879

    申请日:1994-10-18

    摘要: The multi-cylinder dryer of a papermachine includes a first tier of cylinders, where the web supported by a first dryer wire travels on the cylinders of the first tier of cylinders, as well as a second tier of cylinders, where the web supported by a second dryer wire travels on the cylinders of the second tier of cylinders. The first dryer wire travels from a cylinder of the first tier of cylinders to a first guide roll and delivers the web lying on its side facing the cylinder of the first tier onto the second dryer wire and, after having wound onto a second wire guide roll, again takes up, on its surface facing the following cylinder of the first tier, the web from the second dryer wire traveling through the second tier of cylinders. A section extending between the dryer cylinder and the first wire guide roll is provided on the web-free side of the wire with a nozzle for blowing air in the traveling direction of the wire into a gap between the wire and the first wire guide roll for producing a plenum zone facilitating the release of the web.

    摘要翻译: PCT No.PCT / FI93 / 00058 Sec。 371日期:1994年10月18日 102(e)日期1994年10月18日PCT提交1993年2月19日PCT公布。 公开号WO94 / 19536 日期1994年9月1日。造纸机的多缸干燥器包括第一层筒,其中由第一干燥丝网支撑的幅材在第一层筒的圆筒上行进,以及第二层筒 其中由第二干燥丝网支撑的纤维网在第二层气瓶的气缸上行进。 第一干燥器丝线从第一层滚筒的圆柱体移动到第一导辊,并且将位于其面向第一层的圆筒的一侧的纤维网输送到第二干燥器丝线上,并且在卷绕到第二导丝辊 在其面向第一层的随后的圆柱体的表面上再次占据了来自第二干燥器丝线的幅材,其通过第二层级的滚筒。 在干燥筒和第一线导向辊之间延伸的部分设置在线的无卷边上,其具有用于沿导线的行进方向吹送空气的喷嘴到电线和第一导线辊之间的间隙中, 产生促进网的释放的增压区。

    Suction roll in particular for a paper web dryer
    76.
    发明授权
    Suction roll in particular for a paper web dryer 失效
    吸辊特别适用于纸幅烘干机

    公开(公告)号:US5465502A

    公开(公告)日:1995-11-14

    申请号:US99026

    申请日:1993-07-19

    IPC分类号: D21F3/10 D21F5/04 F26B13/30

    CPC分类号: D21F3/10 D21F5/042

    摘要: A suction roll (1), in particular for a paper web dryer, comprising a perforated roll jacket (2), with at least one non-rotatable hollow shaft (3) which communicates with the interior of the suction roll via openings (7, 7') and at least one closing member (9) displaceable in the axial direction for separating off at least one peripheral region of the suction roll. The at least one, in particular disc-shaped dividing wall (5) is located in the suction roll interior and has at least one, preferably central opening (22). It can be of benefit when the dividing wall (5) corotates with the roll and/or when the at least one closing member (9) has the form of a hollow cylinder. Further, if the non-rotatable hollow shaft (3) is designed to be axially displaceable, it can be used to control the size of the opening (22) in the dividing wall (5).

    摘要翻译: 抽吸辊(1),特别是用于纸幅干燥器的吸辊(1)包括多孔辊套(2),至少一个不可旋转的中空轴(3),其通过开口(7,7)连通抽吸辊的内部, 7')和至少一个在轴向上可移位的封闭件(9),用于分离吸辊的至少一个周边区域。 至少一个,特别是圆盘形分隔壁(5)位于抽吸辊内部,并且具有至少一个,优选地是中心开口(22)。 当分隔壁(5)与辊旋转和/或当至少一个封闭构件(9)具有中空圆柱体的形式时,这是有益的。 此外,如果不可旋转的空心轴(3)被设计成可轴向移动,则其可以用于控制分隔壁(5)中的开口(22)的尺寸。

    Dryer section
    77.
    发明授权
    Dryer section 失效
    干燥部

    公开(公告)号:US5319863A

    公开(公告)日:1994-06-14

    申请号:US126785

    申请日:1993-09-24

    IPC分类号: D21F5/04 D21G9/00 F26B5/04

    CPC分类号: D21G9/0063 D21F5/042

    摘要: A dryer section of a machine for manufacturing fiber webs, which includes a plurality of heatable drying cylinders arranged to form at least a first dryer group and a second dryer group, and arranged in horizontal cylinder rows, and including a plurality of suction rolls each being disposed between two adjacent cylinders. The cylinders of the first group have axes disposed in a first plane I, the suction rolls of the first group have axes disposed in a second plane II, the cylinders of the second group have axes disposed in a third plane III, and the suction rolls of the second group have axes disposed in a fourth plane IV. In accordance with different embodiments planes I and II may be coplanar, planes II and III may be coplanar; planes I and III may be disposed between planes II and IV; and the axes of the first drying cylinders and its associated suction roll of the second group may be disposed below the axes of the other drying cylinders and suction rolls of the second group.

    摘要翻译: 一种用于制造纤维幅材的机器的干燥部分,其包括多个可加热干燥筒,其布置成形成至少第一干燥器组和第二干燥器组,并且布置成水平圆柱列,并且包括多个吸辊 设置在两个相邻的气缸之间。 第一组的气缸具有设置在第一平面I中的轴,第一组的吸入辊具有设置在第二平面II中的轴,第二组的气缸具有设置在第三平面III中的轴,并且吸入辊 的第二组具有设置在第四平面IV中的轴。 根据不同实施例,平面I和II可以是共面的,平面II和III可以是共面的; 飞机I和III可以放置在飞机II和IV之间; 并且第二组的第一干燥筒及其相关联的抽吸辊的轴线可以设置在第二组的其它干燥筒和抽吸辊的轴线的下方。

    Method and apparatus for drying webs
    78.
    发明授权
    Method and apparatus for drying webs 失效
    干燥WEBS的方法和装置

    公开(公告)号:US5163236A

    公开(公告)日:1992-11-17

    申请号:US496411

    申请日:1990-03-20

    申请人: Pertti Heikkila

    发明人: Pertti Heikkila

    CPC分类号: F26B13/16 D21F5/042 D21H25/06

    摘要: A method for use in web drying apparatus, such as a drying section of a coating or paper machine which includes drying cylinders against the outer mantles of which a web to be dried is pressed in direct contact, and wherein the web is carried from one drying cylinder to the next supported on a wire which passes from a drying cylinder over an intermediate leading cyclinder where the web is carried on the outer side of the wire out of direct contact with an outer mantle of the leading cylinder, and then to the next drying cylinder, comprises the steps of maintaining a negative pressure in a pocket space defined between a pair of successive drying cylinders and the web-supporting wire for suctioning the web into contact with the wire as it runs from one drying cylinder to the intermediate leading cylinder and from the intermediate leading cylinder to the next drying cylinder, and providing the leading cylinder with a perforated outer mantle and maintaining a negative pressure within the interior of the outer mantle, to thereby render it a suction cylinder for suctioning the web into contact with the wire as the wire travels over the suction cylinder. Apparatus for use in the method includes a pocket chamber for enclosing the pocket and apparatus for maintaining negative pressures in the enclosed pocket space and interior of the leading cylinder.

    摘要翻译: 一种在卷筒纸干燥装置中使用的方法,例如涂布机或造纸机的干燥部分,其包括将干燥筒抵靠外壁直接接触地压制干燥的幅材,并且其中所述幅材从一个干燥 气缸到下一个支撑在电线上的电线,该电线从干燥筒通过中间引导环形器,其中网被承载在电线的外侧,与引导圆筒的外罩直接接触,然后到下一个干燥 包括以下步骤:在一对连续的干燥筒之间保留一个负压,并且当卷筒从一个干燥滚筒运行到中间的前导滚筒时,卷筒纸支撑丝线用于吸引卷材与丝接触; 从中间导向圆筒到下一个干燥圆筒,并为引导圆筒提供穿孔的外套,并在i内保持负压 从而使其成为吸引气缸,当吸管沿着吸气筒行进时,该气缸用于将纤维网与线接触。 用于该方法的装置包括用于封闭袋的袋室和用于在封闭的袋空间和引导筒的内部保持负压的装置。

    Vacuum roll transfer apparatus
    79.
    发明授权
    Vacuum roll transfer apparatus 失效
    真空辊转运装置

    公开(公告)号:US5152078A

    公开(公告)日:1992-10-06

    申请号:US660466

    申请日:1991-03-18

    申请人: Gregory L. Wedel

    发明人: Gregory L. Wedel

    IPC分类号: D21F5/04 D21G9/00

    CPC分类号: D21G9/0063 D21F5/04 D21F5/042

    摘要: A vacuum roll transfer apparatus is disclosed for drying a web extending through a single tier dryer section of a paper machine. The apparatus includes a rotatable perforate shell having a first and a second end. A stationary duct is disposed within and along the length of the shell between the ends of the shell. The duct is connected to a source of partial vacuum and the shell defines a plurality of holes along the length thereof such that in use of the apparatus, when the duct is connected to the source of partial vacuum, a partial vacuum is generated within a chamber defined between the shell and the duct. A flow restricting arrangement is disposed within the duct for generating a greater vacuum level adjacent to at least one of the ends of the shell for facilitating threading of a tail of the web.

    摘要翻译: 公开了一种用于干燥通过造纸机的单层干燥器部分延伸的纸幅的真空辊转印装置。 该装置包括具有第一端和第二端的可旋转穿孔壳。 在外壳的端部之间并且沿壳体的长度设置固定的管道。 管道连接到部分真空源,并且壳体沿其长度限定多个孔,使得在使用该装置时,当管道连接到部分真空源时,在腔室内产生部分真空 限定在外壳和导管之间。 流动限制装置设置在管道内,用于产生与壳体的至少一个端部相邻的更大的真空度,以便于腹板尾部的穿线。

    Apparatus for drying a web
    80.
    发明授权
    Apparatus for drying a web 失效
    干燥网络的设备

    公开(公告)号:US5144758A

    公开(公告)日:1992-09-08

    申请号:US792108

    申请日:1991-11-14

    IPC分类号: D21F5/04 D21G9/00

    CPC分类号: D21F5/04 D21F5/042 D21G9/0063

    摘要: A papermachine drying apparatus is disclosed for drying a first and a second side of the web. The apparatus includes a first single tier drying section for drying only the first side of the web. The first drying section includes a first plurality of dryer cylinders for drying the first side of the web, and a first plurality of vacuum rolls disposed in close proximity between adjacent dryer cylinders of the first plurality of dryer cylinders. A second single tier drying section for drying only the second side of the web in which the drying section includes a second plurality of dryer cylinders for drying the second side of the web, such cylinders being disposed immediately downstream relative to the first drying section. A second plurality of vacuum rolls are arranged such that each vacuum roll is disposed in close proximity between adjacent dryer cylinders of the second plurality of dryer cylinders. At least one of the vacuum rolls of the first and the second drying sections have a smaller diameter than the diameter of any of the dryer cylinders of the first and second drying sections, and the second drying section is a displaced downstream mirror image of the first drying section.

    摘要翻译: 公开了一种干燥纸幅的第一和第二侧的造纸机干燥装置。 该装置包括仅干燥幅材的第一侧的第一单层干燥部分。 第一干燥部分包括用于干燥幅材的第一侧的第一多个烘缸,以及设置在紧邻第一多个烘缸的相邻烘缸之间的第一多个真空辊。 第二单层干燥部分,用于仅干燥幅材的第二侧,其中干燥部分包括用于干燥幅材的第二侧的第二多个干燥器筒,这种圆筒相对于第一干燥部分紧邻设置在下方。 第二组多个真空辊布置成使得每个真空辊布置成紧邻第二多个干燥器圆筒的相邻干燥器圆筒之间。 第一干燥部和第二干燥部的至少一个真空辊的直径比第一干燥部和第二干燥部的干燥滚筒的直径小,第二干燥部是第一干燥部 干燥部分。