公开(公告)号：WO1997045588A1

公开(公告)日：1997-12-04

申请号：PCT/US1997006419

申请日：1997-04-03

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F05/04

CPC classification number: D21F5/042 ,  D21F5/044

Abstract: The dryer section in a papermaking machine has a single tier of all top felted dryer rolls (24) six to nine feet in diameter. Air caps (42) are employed over the dryer rolls (24) to simultaneously dry both sides of the web (28) to prevent curl and to increase drying rates. The air caps (42) employ blown air at a temperature of 250-900 degrees Fahrenheit and air speeds of 8000-40000 feet per minute. The dryer fabric (32) employed is foraminous with a permability of between 300-1200 cubic feet per minute per square foot and is designed to withstand peak temperatures of up to 900 degrees Fahrenheit and average temperatures of between 500-600 degrees Fahrenheit. A single transfer roll (150), or more advantageously, two grooved vacuum rolls (50) in a vacuum box (54) are disposed between the dryer rolls to maximize the circumferential wrap of the web and, at the same time, support and transport the web between dryer rolls.

Abstract translation: 造纸机中的干燥部具有直径为6至9英尺的所有顶部烘干辊（24）的单层。 在干燥辊（24）上使用空气盖（42）以同时干燥幅材（28）的两侧以防止卷曲并增加干燥速率。 空气帽（42）采用吹制空气，温度为250-900华氏度，空气速度为8000-40000英尺/分钟。 采用的干燥织物（32）具有300-1200立方英尺/分钟/平方英尺的渗透性，并且被设计成能够承受高达900华氏度的峰值温度和500-600华氏度的平均温度。 真空箱（54）中的单个转移辊（150）或更有利地是两个带槽的真空辊（50）设置在干燥器辊之间，以使幅材的周向包裹最大化，并且同时支撑和运输 干燥辊之间的网。

公开(公告)号：WO1995007387A1

公开(公告)日：1995-03-16

申请号：PCT/US1994007985

申请日：1994-07-15

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  McGRAW, William, R. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F05/04

CPC classification number: D21F5/042 ,  D21F3/10

Abstract: A vacuum roll apparatus (12) is disclosed for transferring a web (W) supported on a dryer felt (14) from a first to a second drying cylinder (16, 18) of a dryer section (10). The apparatus (12) includes a rotatable perforate shell (20) having a first and a second end (22, 24), the shell (20) defining a cavity (26) which extends from the first to the second end (22, 24) of the shell (20). The arrangement is such that the dryer felt (14) extends from the first dryer (16) around the perforate shell (20) to the second dryer (18) with the web (W) extending contiguously with the dryer felt (14), and the dryer felt (14) being disposed between the shell (20) and the web (W). At least one fin (28) is rigidly secured to the shell (20) and is disposed within the cavity (26) such that when the shell (20) is rotated, the fin (28) generates a flow of air (32) through the perforate shell (20) towards the cavity (26) for drawing the web (W) into close conformity with the dryer felt (14) during movement thereof around the vacuum roll apparatus (12) so that the web (W) is restrained against cross-machine directional shrinkage (34).

Abstract translation: 公开了一种真空辊装置（12），用于将干燥器毛毯（14）上支撑的卷材（W）从干燥部分（10）的第一干燥筒（16,18）传送。 设备（12）包括具有第一和第二端（22,24）的可旋转穿孔壳体（20），壳体（20）限定从第一端部延伸到第二端部（22,24）的空腔 ）（20）。 该布置使得干燥器毛毯（14）从第一干燥器（16）围绕穿孔外壳（20）延伸到第二干燥器（18），网（W）与干燥器毛毯（14）连续延伸，并且 干燥器毛毯（14）设置在壳体（20）和腹板（W）之间。 至少一个翅片（28）刚性地固定到壳体（20）并且设置在空腔（26）内，使得当壳体（20）旋转时，翅片（28）产生空气流（32）通过 所述穿孔壳体（20）朝向所述空腔（26），用于在所述卷筒（W）围绕所述真空辊装置（12）运动期间将所述卷材（W）拉伸成与所述干燥器毛毯（14）紧密一致，使得所述卷材（W） 跨机定向收缩（34）。

公开(公告)号：WO1996023102A1

公开(公告)日：1996-08-01

申请号：PCT/US1995016515

申请日：1995-12-20

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F05/04

CPC classification number: D21F5/042

Abstract: The dryer of this invention employs a vacuum chamber interposed below and between first and second heated dryer rolls (26, 28). The vacuum chamber has two sides and a top which overlies two grooved reversing rolls (110, 114). The vacuum chamber controls all flow of air in the gap between and below the dryer rolls. The dryer-fabric-backed paper web passes from the first dryer roll around the reversing rolls and up to the second dryer roll. The dryer fabric seals the vacuum chamber, and air is drawn therefrom. The two rolls within the chamber permit a greater fraction of the dryer roll surfaces to be maintained in contact with the web, and the chamber permits a vacuum to be drawn on two rolls, and three sections of web which are not engaged by rolls, by a single vacuum source for significant cost savings.

Abstract translation: 本发明的干燥器采用介于第一和第二加热干燥器辊（26,28）之下和之间的真空室。 真空室具有两个侧面，顶部覆盖两个带槽的反向辊（110,114）。 真空室控制干燥器辊之间和之下的间隙中的所有空气流。 干燥剂织物背衬的纸幅从第一干燥机辊绕过反向辊并且直到第二干燥辊。 干燥器织物密封真空室，并从中抽出空气。 室内的两个辊允许更大部分的干燥器辊表面保持与幅材接触，并且该室允许在两个辊和三个不由辊接合的纸幅的三个部分上被牵引 一个单一的真空源，显着节省成本。

公开(公告)号：WO1998007924A1

公开(公告)日：1998-02-26

申请号：PCT/US1997014358

申请日：1997-07-31

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F05/04

CPC classification number: D21F5/042 ,  D21F5/044

Abstract: A new dryer section (20) of an existing dryer section of the two tier double-felted type has air caps (42) disposed over the upper dryer rolls (28) to simultaneously dry both sides of the web (26) to increase drying rates. The heated pressurized air is blown through multiple air impingement holes (48) in the air cap nozzle plates (46) to impinge the web (26) at a temperature of 500-900 degrees Fahrenheit and air speeds of 20,000-40,000 feet per minute. The dryer fabric (30) employed is foraminous with a permeability of between 400-1,200 cubic feet per minute per square foot and is designed to withstand peak temperatures of between 500-600 degrees Fahrenheit. The design of the air caps (42) utilizes recirculation of the blowing air to control drying rates.

Abstract translation: 两层双层毡型现有干燥部分的新干燥部分（20）具有设置在上干燥辊（28）上方的空气帽（42），以同时干燥幅材（26）的两侧以增加干燥速率 。 加热的加压空气通过空气帽喷嘴板（46）中的多个空气冲击孔（48）吹送，以在500-900华氏度的温度和20,000-40,000英尺/分钟的空气速度下冲击卷筒纸（26）。 采用的干燥织物（30）具有介于400-1200立方英尺/分钟/平方英尺之间的渗透性，并且被设计成可承受500-600华氏度的峰值温度。 空气帽（42）的设计利用吹送空气的再循环来控制干燥速率。

公开(公告)号：WO1998014660A1

公开(公告)日：1998-04-09

申请号：PCT/US1997013540

申请日：1997-07-18

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  ALFANO, James, P.

IPC: D21G01/02

CPC classification number: F16C13/028 ,  D21G1/022

Abstract: A controlled crown roll utilizes a crown support piston (76) with a glide shoe (78) with a cavity (80) in the face of the glide shoe centered under the nip loading line. The cavity is surrounded by a land area (83), the majority of which is located away from the nip load. Use of a low viscosity hydraulic fluid, for example, 15.6 cP, with a hydraulic film thickness of 0.002 inches, results in significantly lower friction between the glide shoe and the interior surface (40) of the rotating mantle. Recesses in the piston sides form hydrostatic thrust bearings (82) which perform the centering function for the piston and the glide shoe.

Abstract translation: 控制的冠辊利用具有滑动靴（78）的表冠支撑活塞（76），滑动靴（78）具有在辊隙加载线下方的滑动面的表面中的空腔（80）。 空腔被陆地区域（83）包围，其中大部分位于远离压区负荷的位置。 使用液压膜厚度为0.002英寸的低粘度液压油，例如15.6cP，导致滑靴与旋转罩的内表面（40）之间的摩擦力显着降低。 活塞侧的凹槽形成静压推力轴承（82），其执行活塞和滑动鞋的定心功能。

公开(公告)号：WO1996023103A1

公开(公告)日：1996-08-01

申请号：PCT/US1995016602

申请日：1995-12-20

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F05/04

CPC classification number: D21F5/042

Abstract: A paper drying section utilizes two reversing rolls (26, 28) between each dryer roll (22, 24) to extend the available time for vapor to flash from the web. A vacuum box is disposed between the two reversing rolls to support and dry the felt and paper web as it passes from one reversing roll to another. An air cap is used to blow high velocity air onto the exposed surface of the paper web which is held by the vacuum box. The spacing of the two reversing rolls increases the wrap of the single tier dryer by approximately twenty percent over that of a conventional single tier dryer with a single reversing roll. Another configuration dryer section positions the first of the two reversing rolls downwardly beneath its adjacent dryer roll creating a long draw between the dryer roll and the first reversing roll. This long draw is supported by a vacuum box adjacent the felt. The downward positioning of the first roll increases the length of the draw between the first and second reversing rolls, providing additional area for drying by an air cap.

Abstract translation: 纸张干燥部分使用每个干燥辊（22,24）之间的两个反向辊（26,28）来延长蒸气从纸幅中闪光的可用时间。 在两个反转辊之间设置一个真空箱，以便在毡和纸幅从一个反向辊通过到另一个辊时将其支撑并干燥。 空气盖用于将高速空气吹送到由真空箱保持的纸幅的暴露表面上。 两个反向辊的间距使单层干燥器的包装比传统的单层干燥机具有单个反转辊的包装增加了大约百分之二十。 另一种构型干燥器部分将两个反向辊中的第一个向下定位在其相邻干燥器辊的下方，从而在干燥辊和第一反向辊之间形成长的牵伸。 这个长的牵引由靠近毡的真空箱支撑。 第一辊的向下定位增加了第一和第二反向辊之间的拉伸长度，为空气帽提供了用于干燥的附加区域。

公开(公告)号：EP1009878A1

公开(公告)日：2000-06-21

申请号：EP97935250.7

申请日：1997-07-18

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： DESHPANDE, Rajendra, D. ,  ALFANO, James, P.

IPC: D21G1/02 ,  F16C13/00

CPC classification number: F16C13/028 ,  D21G1/022

Abstract: A controlled crown roll utilizes a crown support piston (76) with a glide shoe (78) with a cavity (80) in the face of the glide shoe centered under the nip loading line. The cavity is surrounded by a land area (83), the majority of which is located away from the nip load. Use of a low viscosity hydraulic fluid, for example, 15.6 cP, with a hydraulic film thickness of 0.002 inches, results in significantly lower friction between the glide shoe and the interior surface (40) of the rotating mantle. Recesses in the piston sides form hydrostatic thrust bearings (82) which perform the centering function for the piston and the glide shoe.

公开(公告)号：EP1009878B1

公开(公告)日：2002-10-16

申请号：EP97935250.7

申请日：1997-07-18

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： DESHPANDE, Rajendra, D. ,  ALFANO, James, P.

IPC: D21G1/02 ,  F16C13/00

CPC classification number: F16C13/028 ,  D21G1/022

Abstract: A controlled crown roll utilizes a crown support piston (76) with a glide shoe (78) with a cavity (80) in the face of the glide shoe centered under the nip loading line. The cavity is surrounded by a land area (83), the majority of which is located away from the nip load. Use of a low viscosity hydraulic fluid, for example, 15.6 cP, with a hydraulic film thickness of 0.002 inches, results in significantly lower friction between the glide shoe and the interior surface (40) of the rotating mantle. Recesses in the piston sides form hydrostatic thrust bearings (82) which perform the centering function for the piston and the glide shoe.

公开(公告)号：EP0907796B1

公开(公告)日：2002-07-31

申请号：EP97918699.6

申请日：1997-04-03

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F5/04

CPC classification number: D21F5/042 ,  D21F5/044

Abstract: The dryer section in a papermaking machine has a single tier of all top felted dryer rolls (24) six to nine feet in diameter. Air caps (42) are employed over the dryer rolls (24) to simultaneously dry both sides of the web (28) to prevent curl and to increase drying rates. The air caps (42) employ blown air at a temperature of 250-900 degrees Fahrenheit and air speeds of 8000-40000 feet per minute. The dryer fabric (32) employed is foraminous with a permability of between 300-1200 cubic feet per minute per square foot and is designed to withstand peak temperatures of up to 900 degrees Fahrenheit and average temperatures of between 500-600 degrees Fahrenheit. A single transfer roll (150), or more advantageously, two grooved vacuum rolls (50) in a vacuum box (54) are disposed between the dryer rolls to maximize the circumferential wrap of the web and, at the same time, support and transport the web between dryer rolls.

Abstract translation: 造纸机中的干燥部分具有单层直径6至9英尺的所有顶部毡化干燥辊（24）。 在干燥辊（24）上采用气帽（42），以同时干燥纸幅（28）的两侧以防止卷曲并提高干燥速率。 空气帽（42）使用温度为250-900华氏度和空气速度为8000-40000英尺/分钟的吹制空气。 所使用的干燥器织物（32）具有多孔性，其具有介于每平方英尺每分钟300-1200立方英尺之间的可变形性，并且被设计为承受高达900华氏度的峰值温度和在华氏500-600华氏度之间的平均温度。 单个的传送辊（150）或者更有利的是在真空箱（54）中的两个开槽的真空辊（50）被设置在干燥辊之间，以最大化网的周向缠绕并且同时支撑和传送 干燥辊之间的纸幅。

公开(公告)号：EP0805894A1

公开(公告)日：1997-11-12

申请号：EP95943903.0

申请日：1995-12-20

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： DESHPANDE, Rajendra, D. ,  PULKOWSKI, Jeffrey, H.

IPC: D21F5

CPC classification number: D21F5/042

Abstract: A paper drying section utilizes two reversing rolls (26, 28) between each dryer roll (22, 24) to extend the available time for vapor to flash from the web. A vacuum box is disposed between the two reversing rolls to support and dry the felt and paper web as it passes from one reversing roll to another. An air cap is used to blow high velocity air onto the exposed surface of the paper web which is held by the vacuum box. The spacing of the two reversing rolls increases the wrap of the single tier dryer by approximately twenty percent over that of a conventional single tier dryer with a single reversing roll. Another configuration dryer section positions the first of the two reversing rolls downwardly beneath its adjacent dryer roll creating a long draw between the dryer roll and the first reversing roll. This long draw is supported by a vacuum box adjacent the felt. The downward positioning of the first roll increases the length of the draw between the first and second reversing rolls, providing additional area for drying by an air cap.

Abstract translation: 纸干燥部分利用位于每个干燥辊（22,24）之间的两个反转辊（26,28）来延长蒸气从纸幅闪蒸的可用时间。 在两个翻转辊之间设置一个真空箱，以在毛毡和纸幅从一个翻转辊转到另一个时支承和干燥毡和纸幅。 气帽用于将高速空气吹到由真空箱固定的纸幅的暴露表面上。 两个翻转辊的间隔比单层翻转辊的传统单层烘干机的单层烘干机的包装增加约百分之二十。 另一个配置干燥部分将两个换向辊中的第一个向下定位在其相邻的干燥辊下方，从而在干燥辊和第一换向辊之间产生长的拉伸。 这个长时间的抽签由一个靠近毛毡的真空盒支持。 第一辊的向下定位增加了第一和第二反向辊之间的拉伸长度，为气帽的干燥提供了额外的面积。