公开(公告)号：WO1991013206A1

公开(公告)日：1991-09-05

申请号：PCT/US1991001090

申请日：1991-02-19

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  HERGERT, Richard, E.

IPC: D21F09/00

CPC classification number: D21F9/003

Abstract: A method is disclosed for forming a paper web having a low tensile ratio. The method includes the steps of ejecting stock (S) substantially horizontally from a headbox (12), and receiving the rejected stock (S) onto a substantially horizontally disposed looped first wire (14), moving at substantially the same speed and the same direction as the ejected stock (S). The arrangement is such that a first portion of water (18) is removed from the ejected stock (S) downwardly through the first wire (14) during passage of the ejected stock (S) through an initial dewatering zone (20). The partially dewatered stock is sandwiched between the first wire (14) and a looped second wire (22), the wires (14, 22) defining therebetween a secondary dewatering zone (24) for further dewatering the ejected stock. A second and third portion of water (28, 30) are removed downwardly and upwardly, respectively, through the first and second wires (14, 22) during movement of the ejected stock past a curved shoe (26). The curvature of the secondary dewatering zone (24) is reversed such that the wires (14, 22) extend around a curved inverted box (34) connected to a source of partial vacuum (36), so that a fourth portion of water (38) is removed upwardly through the second wire (22) into the curved box (34). The arrangement is such that a gradual dewatering of the ejected stock is accomplished during passage of the stock (S) through the initial and secondary dewatering zones (20, 24), thereby inhibiting removal of fines from the ejected stock and minimizing the tensile ratio of the resultant web (W).

公开(公告)号：WO1991009173A1

公开(公告)日：1991-06-27

申请号：PCT/US1990001832

申请日：1990-04-09

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  ROERIG, Arnold, J. ,  WEDEL, Gregory, L. ,  BROWN, Dale, A.

IPC: D21F05/04

CPC classification number: F26B13/16 ,  D21F5/042 ,  D21F5/046

Abstract: A ventilating roll (12) for introducing a supply of relatively dry air into the pocket spaces (P1, P3, P5) between dryer rolls (10) and the co-running fabrics (F) and paper web (W) in a papermaking machine, and removing the relatively moist air which is liberated from the traveling paper web (W) as it comes into contact with the heated dryer rolls (10). The ventilating roll (12) has a plurality of separate compartments (18, 20), some of which conduct super-atmospheric pressure air into the pocket spaces, and some of which conduct sub-atmospheric air out of the pocket spaces. The compartments (18) conducting air into the roll alternate with the compartments (20) for conducting air out of the roll. The temperature of the internal structure of the roll is thereby balanced circumferentially about the center shaft (16) of the roll (12) and thermal bowing of the roll is kept to a minimum.

公开(公告)号：WO1991008058A1

公开(公告)日：1991-06-13

申请号：PCT/US1990004756

申请日：1990-08-23

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  BIELAGUS, Joseph, B.

IPC: B07B01/15

CPC classification number: A01D17/06 ,  B07B1/15 ,  D21D5/02 ,  Y10T403/455

Abstract: A disk screen or like shaft structure is disclosed in which screen disks (14), surround disks (24), and spacers (28) are connected together in modular relation. The surround disks (24) have metallic flanges (25) which shield the plastic spacers (28) which are located on either side of the surround disks (24) between the screen disks (14). The spacers (28) are formed of resilient plastic to allow the disks to deflect from their radial plane and the flanges (25) of the surround disks (24) are sufficiently smaller then the spacers (28) to avoid contact with the screen disks (14) in their deflected positions. The assembly is placed under a predetermined endwise compression and the module is mounted on a rectangular shaft (27) which is suitably supported for rotation. The assembly is particularly suited for screening of wood chips in the paper making industry where exposed plastic parts is undesirable.

公开(公告)号：WO1991002118A1

公开(公告)日：1991-02-21

申请号：PCT/US1990002591

申请日：1990-05-09

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  SANFORD, Charles, L.

IPC: D21F01/02

CPC classification number: D21F1/02 ,  D21F1/028

Abstract: In a headbox (10) of a web forming apparatus (12), a trailing element device (14) is disclosed for dividing a flow of stock (16) flowing through a slice chamber (18) of the headbox (10) towards a slice lip (20) of the headbox (10). The trailing element device (14) includes a rectangular sheet (22) having an upstream and a downstream end (24, 26) and a first and a second surface (28, 30). The upstream end (24) of the sheet (22) is pivotally secured within the slice chamber (18) for dividing the flow of stock into a first and a second current (34, 36). The downstream end (26) of the sheet (22) freely floats adjacent to the slice lip (20) such that the first current of stock (34) flows past the first surface (28) and the second current of stock (36) flows past the second surface (30) so that turbulence within the slice chamber (18) is reduced. At least one of the surfaces defines a plurality of parallel-spaced grooves (42-45 and 46-49) extending in a direction from the upstream to the downstream end (24, 26) of the sheet (22) for inhibiting the formation of machine direction vortices within the flow of stock that would otherwise cause streaking of the resultant web (W).

公开(公告)号：WO1991000937A1

公开(公告)日：1991-01-24

申请号：PCT/US1990001901

申请日：1990-04-09

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  FILZEN, Scott, E. ,  LANGE, David, V. ,  HAUSER, Timothy, L.

IPC: D21F03/02

CPC classification number: D21F3/0245

Abstract: An enclosed extended nip press apparatus (10) is disclosed for pressing water from a formed web (W). The apparatus (10) includes a frame (12) and a backing roll (14) rotatably secured to the frame (12). A press member (16) cooperates with a backing roll (14) for defining therebetween an extended nip (N) for the passage therethrough of the formed web (W). A press blanket (18) extends in a closed loop through the nip (N), the blanket (18) having a first and a second lateral edge (20, 22) and an inner and an outer surface (24, 26). A first and a second head (28, 30) are rotatably secured to the press member (16) with the first and second heads (28, 30) being disposed adjacent to and cooperating with the first and the second edges (20, 22) respectively of the blanket (18). The first and the second heads (28, 30) define first and second annular channels (32, 34) respectively for the reception therein of the first and the second lateral edges (20, 22) respectively of the blanket (18). A first and a second annular seal (36, 38) are disposed within respectively the first and the second channels (32, 34) with the seals (36, 38) contacting the respective edges of the blanket (18). A first and second plurality of barbs (40, 42) extend from the first and the second channels (32, 34) respectively such that the first plurality of barbs (40) extend towards and engage the first lateral edge (20) of the blanket (18) and are disposed on the opposite surface (26) of the blanket (18) relative to the first seal (36). The second plurality of barbs (42) extend towards and engage the second lateral edge (22) of the blanket (18). The second plurality of barbs (42) are disposed on the opposite surface (26) of the blanket (18) relative to the second seal (38) so that during use of the apparatus (10), lateral movement of the edges (20, 22) of the blanket (18) relative to the heads (28, 30) is inhibited.

公开(公告)号：WO1990009482A1

公开(公告)日：1990-08-23

申请号：PCT/US1990000302

申请日：1990-01-16

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  MOSCHEL, Charles, C.

IPC: D21G01/02

CPC classification number: B21B27/055 ,  B21B27/08 ,  D21G1/022 ,  F16C13/02 ,  F16C13/028

Abstract: Apparatus for controlling the oxygenation of both the bearing lubrication oil and the hydraulic oil used for actuating the roll shell support elements (12) in a controlled deflection roll (10), such as used in the papermaking industry, includes a seal (26a, b) at either end of the controlled deflection roll (10) which establishes a gas-impervious seal between the roll shell support and rotation bearings (24a, b) at either end of the roll and the interior (28) of the roll. A source (40) of pressurized inert gas is linked (46, 42) to both the interior of the roll and to the reservoir (38) of hydraulic oil used to actuate the roll shell support shoes (12). This prevents oxygen from interfacing with the hydraulic oil at the only two points in the closed system where the hydraulic oil and the atmosphere would otherwise come into contact. A separate bearing oil lubrication system (32, 34, 35, 36) having its own reservoir is maintained to supply bearing lubricant to the bearings (24a, b) and return it to sump (20) while maintaining the bearing lubricant separate from the hydraulic oil.

公开(公告)号：WO1990009481A1

公开(公告)日：1990-08-23

申请号：PCT/US1990000213

申请日：1990-01-17

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  TURNER, J., A. ,  GRAY, Paul, T.

IPC: D21F01/00

CPC classification number: D21F9/003

Abstract: A forming apparatus (10) is disclosed for forming a web (W) from stock (S) ejected through a slice lip (12) of a headbox (14). The apparatus (10) includes a first wire (16) which extends in an endless loop (18) past the slice lip (12) such that the stock (S) is ejected through the slice lip (12) onto the first wire (16). A second wire (20) extends in a further endless loop (22) with the second wire (20) cooperating with the first wire (16) for defining therebetween a forming section (24) having a first and a second end (26, 28) such that the web (W) is formed during passage of the stock (S) through the forming section (24). A first and a second turning bar (30, 32) are disposed respectively within the endless loop (18) and the further endless loop (22) adjacent to the first end (26) of the forming section (24) such that the slice lip (12) is disposed in close proximity to the first end (26) of the forming section (24). The apparatus (10) also includes a curved drainage device (34), a first slot (36), a box (38), a second slot (42) and a further curved drainage device (44). The curvature of the curved drainage device (34) and the box (38) is opposite to the curvature of the further curved drainage device (44) such that the stock (S) is progressively drained through both wires (16, 20) during passage through the forming section (24) from the first (26) towards the second end (28) thereof.

Abstract translation: 公开了一种用于从通过流浆箱（14）的切片唇缘（12）喷射的原料（S）形成网（W）的成形设备（10）。 设备（10）包括第一线（16），其以无限循环（18）延伸超过切片唇缘（12），使得所述坯料（S）通过切片唇缘（12）喷射到第一线（16）上 ）。 第二线（20）在另一无限循环（22）中延伸，第二线（20）与第一线（16）协作，以在其间限定形成部分（24），其具有第一和第二端（26,28 ），从而在坯料（S）通过成形部分（24）期间形成纸幅（W）。 第一和第二转向杆（30,32）分别设置在与形成部分（24）的第一端（26）相邻的无端环（18）和另外的无端环（22）中，使得片唇 （12）设置成紧邻成形部（24）的第一端（26）。 设备（10）还包括弯曲排水装置（34），第一槽（36），箱（38），第二槽（42）和另外弯曲的排水装置（44）。 弯曲排水装置（34）和箱体（38）的曲率与进一步弯曲的排水装置（44）的曲率相反，使得在通过期间，库存（S）通过两根丝线（16,20）逐渐排出 通过成形部分（24）从第一（26）到第二端（28）。

公开(公告)号：WO1990005210A1

公开(公告)日：1990-05-17

申请号：PCT/US1989003847

申请日：1989-09-06

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  FUJIWARA, Haruyoshi

IPC: D21F09/00

CPC classification number: D21F9/003

Abstract: A forming apparatus (10) is disclosed for forming a web (W) from stock (S). The apparatus (10) includes in a headbox (12) for ejecting a jet (J) of the stock (S). A first and a second moving wire (14, 16) cooperate together to define therebetween a forming section (18) having a first and a second end (20, 22). The first end (20) of the forming section (18) is disposed closely adjacent to the headbox (12). A first plurality of shoes (24-33) cooperate with the first wire (14) such that water drains from the stock (S) through the first wire (14) and through a first plurality of channels (34-32) defined by the first plurality of shoes (24-33). A second plurality of shoes (44-53) cooperate with the second wire (16) such that water drains from the stock (S) through the second wire (16) and through a plurality of slots (54-62) defined by the second plurality of shoes (44-53). The first and the second plurality of shoes (24-33; 44-53) are staggered relative to each other for enhancing the dispersion of fibers within the stock (S) during formation of the web (W).

Abstract translation: 公开了一种用于从原料（S）形成网（W）的成形设备（10）。 装置（10）包括用于喷射坯料（S）的射流（J）的流浆箱（12）。 第一和第二移动线（14,16）协同工作以在其间限定具有第一和第二端（20,22）的成形部分（18）。 形成部分（18）的第一端（20）设置成与流浆箱（12）紧邻。 第一多个鞋（24-33）与第一线（14）配合，使得水从库存（S）通过第一线（14）排出并通过由第一线（14）限定的第一多个通道（34-32） 第一批鞋（24-33）。 第二多个鞋（44-53）与第二线（16）协作，使得水从库存（S）通过第二线（16）排出并通过由第二线（16）限定的多个槽（54-62） 多件鞋（44-53）。 第一和第二多个鞋子（24-33; 44-53）相对于彼此交错，以在织物（W）的形成期间增强纤维在坯料（S）内的分散。

公开(公告)号：WO1990004672A1

公开(公告)日：1990-05-03

申请号：PCT/US1989003909

申请日：1989-09-14

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  BIELAGUS, Joseph

IPC: D21B01/02

CPC classification number: D21B1/02

Abstract: An apparatus for improving the pulping characteristics of wood chips in which a pair of closely operating rolls (40, 42 or 50, 52) are provided for supplying compressive force to chips passed therebetween, at least one roll having an aggressively contoured surface (100) for causing chips to crack in the thickness dimension of the chip as compressive force is applied to the chip.

公开(公告)号：WO1990001580A1

公开(公告)日：1990-02-22

申请号：PCT/US1989003126

申请日：1989-07-19

Applicant: BELOIT CORPORATION

Inventor： BELOIT CORPORATION ,  WEDEL, Gregory, L.

IPC: D21G09/00

CPC classification number: D21F5/04 ,  D21F5/042 ,  D21G9/0063

Abstract: An apparatus is disclosed for cutting a tail from a web (WA) extending from a single tier dryer section (15A) to a further single tier dryer section (16A). The apparatus includes a last dryer (18) of the dryer section (15A) and a dryer felt (F) extending around the last dryer (18) such that the web (WA) is disposed between the dryer felt (F) and the last dryer (18) for drying a second side (20) of the web (WA). A last felt roll (22) is disposed downstream relative to the last dryer (18) such that the felt (F) extends around the last felt roll (22). A first dryer (24) of the further dryer section (16A) is disposed downstream relative to the last dryer (18) and a first felt roll (26) is disposed between the last dryer (18) and the first dryer (24). A further felt (FF) extends around the first felt roll (26) and the first dryer (24) such that the web (WA) extends in open draw (28) between the last dryer (18) and the first dryer (24) and thereafter around the first dryer (24) between the further felt (FF) and the first dryer (24) for drying a first side (30) of the web (WA). A tail cutter (32) is disposed adjacent of the web (WA) for cutting a tail from the web (WA) in the open draw (28).

Abstract translation: 公开了一种用于从从单层干燥部分（15A）延伸到另一单层干燥部分（16A）的网（WA）切割尾部的装置。 该设备包括干燥器部分（15A）的最后一个干燥器（18）和围绕最后一个干燥器（18）延伸的烘干机毛毡（F），使得卷筒纸（WA）设置在烘干机毡（F）和最后的烘干机 干燥器（18），用于干燥幅材（WA）的第二侧面（20）。 最后一个毛毡辊（22）相对于最后一个干燥器（18）设置在下游，使得毛毡（F）围绕最后的毛毡辊（22）延伸。 进一步的干燥部分（16A）的第一干燥器（24）相对于最后一个干燥器（18）设置在下游，并且第一毛毯辊（26）设置在最后的干燥器（18）和第一干燥器（24）之间。 进一步的毛毡（FF）围绕第一毛毡辊（26）和第一干燥器（24）延伸，使得幅材（WA）在最后的干燥器（18）和第一干燥器（24）之间的开放牵引（28）中延伸， 然后围绕进一步的毛毡（FF）和第一干燥器（24）之间的第一干燥器（24），以干燥幅材（WA）的第一侧面（30）。 靠近卷筒纸（WA）的尾切割器（32）设置成用于在开卷（28）中从卷筒纸（WA）切割尾部。