WO1997030213B1 - Vacuum isolated dewatering method and unit - Google Patents
Vacuum isolated dewatering method and unitInfo
- Publication number
- WO1997030213B1 WO1997030213B1 PCT/US1997/001677 US9701677W WO9730213B1 WO 1997030213 B1 WO1997030213 B1 WO 1997030213B1 US 9701677 W US9701677 W US 9701677W WO 9730213 B1 WO9730213 B1 WO 9730213B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- accordance
- gap
- drainage
- fabric
- liquid
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims abstract 22
- 239000004744 fabric Substances 0.000 claims abstract 21
- 230000000694 effects Effects 0.000 claims abstract 5
- 230000001939 inductive effect Effects 0.000 claims 4
- 230000002708 enhancing Effects 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 2
- 238000004513 sizing Methods 0.000 claims 2
- 239000006185 dispersion Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract 1
Abstract
A drainage device and method which provides for drainage from paper or pulp stock on a fabric (10) in a sheet- or mat-making machine which includes a primary blade (26) and trail blade (28) with a gap (24) therebetween for drainage wherein the size of the gap (24) controls drainage and the primary blade (26) is so configured so as to force a portion of the drained liquid through the fabric to create paper stock activity and disbursement while minimizing turbulence and maintaining laminar flow of the machine direction along with providing reinforcement of CD shear.
Claims
AMENDED CLAIMS
[received by the International Bureau on 7 August 1997 (07.08.97);
original claims 1, 5, 18, 49 and 56 amended; remaining claims unchanged (8 pages)]
1. A drainage device for use in a pulp or papermaking machine for drainage of liquid from pulp or paper stock contained on a fabric which passes over said device, comprising:
a blade arrangement comprising a primary blade and a trail blade;
a gap formed between the primary blade and a trail blade to allow drainage of liquid therethrough; said primary blade having a leading edge support surface adjacent the wire for support thereof and a trailing surface that diverges downward from said support surface away from the wire on the support surface so that a space is formed between said fabric and said trailing surface;
said trail blade having a leading edge support surface for the fabric;
means for maintaining controlled drainage from the paper stock by controlling flow of entrained liquid across the gap; and
said trailing surface of said primary blade being so formed with raised protuberances and valleys so as to force a portion of entrained liquid back through the wire so as to create activity in the stock to enhance stock distribution.
2. The invention in accordance with claim 1 wherein said maintaining means is sizing of the width of the gap in the machine direction.
3. The invention in accordance with claim 2 wherein said drainage surface shape is designed to force a portion of the liquid drained back through the fabric and paper stock while facilitating laminar flow in the
machine direction.
4. The invention in accordance with claim 2 wherein said gap size is adjustable.
5. The invention in accordance with claim 1 wherein the space between the fabric and the drainage surface and the gap are filled with liquid during operation.
6. The invention in accordance with claim 2 wherein said device includes means for providing a controlled vacuum to said gap.
7. The invention in accordance with claim 6 wherein said controlled vacuum is provided by a suction box on which said drainage device is mounted.
8. The invention in accordance with claim 6 which includes a plurality of primary blades mounted on a common suction box.
9. The invention in accordance with claim 5 wherein a plurality of drainage devices are mounted on respective suction boxes.
10. The invention in accordance with claim 3 wherein said drainage surface is formed having a plurality of curved surfaces.
11. The invention in accordance with claim 10 wherein said curves have a profile which shape is a function of speed of operation of a paper making machine.
12. The invention in accordance with claim 10 wherein said drainage surface diverges from said support
surface at an angle of between 0° and 10°.
13. The invention in accordance with claim 1 wherein said primary blade has two opposite ends and includes means preventing drained liquid from passing beyond said ends in a cross machine direction.
14. The invention in accordance with claim 13 wherein providing means includes providing a surface at each end which is flush with the fabric throughout the primary blade length in the machine direction.
15. The invention in accordance with claim 14 which includes deckle means located in the gap at the respective ends of the primary blade to preventing drained liquid from passing beyond said ends in a cross machine direction.
16. The invention in accordance with claim 1 which includes in combination therewith a mechanical device for inducing activity and disbursement of paper stock on a fabric.
17. The invention in accordance with claim 1 wherein said maintaining means is a self-adjusting hinged gate located in the gap.
18. A drainage device for use in a pulp or papermaking machine for drainage of liquid from pulp or paper stock contained on a fabric which passes over said device, comprising:
a blade arrangement comprising a primary blade and a trail blade;
a gap formed between the primary blade and a trail blade to allow drainage of liquid therethrough;
said primary blade having a leading edge support surface adjacent the wire for support thereof and a trailing surface that diverges downward from said support surface away from the wire on the support surface so that a space is formed between said fabric and said trailing surface;
said trail blade having a leading edge support surface for the fabric;
means for maintaining said space and said gap filled with liquid; and
said primary blade shape having raised protuberances and valleys which force some or all of the liquid drained back through the fabric to facilitate stock distribution and activity in the paper stock while facilitating laminar flow in the machine direction.
19. The invention in accordance with claim 18 wherein said maintaining means is the sizing of the width of the gap in the machine direction.
20. The invention in accordance with claim 19 wherein the drainage surface shape is defined by a series of curves in the drainage area which are so formed to minimize turbulence and create laminar flow.
21. The invention in accordance with claim 19 wherein gap size is adjustable.
22. The invention in accordance with claim 18 wherein said maintaining means is a self-adjusting hinged gate located in the gap.
23. The invention in accordance with claim 19 wherein said device includes means for providing a controlled
vacuum to said gap.
24. The invention in accordance with claim 23 wherein said controlled vacuum is provided by a suction box on which said drainage device is mounted.
25. The invention in accordance with claim 24 which includes a plurality of primary blades mounted on a common suction box.
46. The invention in accordance with claim 45 which includes deckle means located in the gap at the respective ends of the primary blade to prevent drained liquid from passing beyond said ends in a cross machine direction.
47. The invention in accordance with claim 34 which includes in combination therewith a mechanical device for inducing activity and disbursement of paper stock on a fabric.
48. The invention in accordance with claim 34 wherein said maintaining means is a self-adjusting hinged gate located in the gap.
49. A method for draining liquid from paper stock contained on a fabric in a pulp or papermaking machine comprising the following steps:
providing a drainage device having a primary blade and a trail blade with a gap therebetween for drainage;
providing said drainage device for use in a pulp or papermaking machine for drainage of liquid from pulp or paper stock contained on a fabric which passes over said device;
forming a space between the primary blade and the fabric passing thereover;
adjusting the size of the gap to control the desired amount of drainage; and
providing said trailing surface of said primary blade with raised protuberances and valleys so as to force a portion of the entrained liquid back through the wire so as to cause activity in the stock to enhance stock distribution.
50. The method in accordance with claim 49 which further includes the steps of:
allowing said space and gap to fill with liquid; maintaining said space and gap to be filled with liquid;
and causing a portion of liquid drained to be forced back through the fabric inducing activity and dispersion of the paper stock thereon.
51. The invention in accordance with claim 50 which further includes the step of applying a controlled vacuum to a side of the gap opposite to that of the fabric.
52. The invention in accordance with claim 50 which further includes the step of providing a primary blade so configured that it causes a portion of the drained liquid to be forced back through the fabric while maintaining laminar flow in the machine direction.
53. The invention in accordance with claim 49 which further includes the step of mechanically inducing paper stock activity and disbursement.
54. The invention in accordance with claim 50 which further includes the step of providing a primary blade so configured that it inparts multiple pulses to the paper stock at a frequency and magnitude to reinforce CD shear.
55. The invention in accordance with claim 49 which further includes the step of providing a self- adjusting means in said gap for controlling flow thereacross.
56. The invention in accordance with claim 50 which further includes the step of:
providing a seal at opposite ends of the primary blade with the fabric and a seal at opposite ends of the gap to prevent the passing of drained liquid across the same in the cross machine direction.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE69731768T DE69731768T2 (en) | 1996-02-13 | 1997-02-11 | METHOD AND DEVICE FOR VACUUM DRAINAGE |
| EA199800687A EA000942B1 (en) | 1996-02-13 | 1997-02-11 | Method and drainage device for drainage of liquid from pulp or paper stock |
| JP9529376A JP2000504795A (en) | 1996-02-13 | 1997-02-11 | Speed-induced drainage method and device |
| BR9707440A BR9707440A (en) | 1996-02-13 | 1997-02-11 | Vacuum insulated dewatering unit and process |
| EP97905722A EP0954633B1 (en) | 1996-02-13 | 1997-02-11 | Vacuum isolated dewatering method and unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/600,833 | 1996-02-13 | ||
| US08/600,833 US5830322A (en) | 1996-02-13 | 1996-02-13 | Velocity induced drainage method and unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997030213A1 WO1997030213A1 (en) | 1997-08-21 |
| WO1997030213B1 true WO1997030213B1 (en) | 1997-09-25 |
Family
ID=24405221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/001677 WO1997030213A1 (en) | 1996-02-13 | 1997-02-11 | Vacuum isolated dewatering method and unit |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US5830322A (en) |
| EP (1) | EP0954633B1 (en) |
| JP (1) | JP2000504795A (en) |
| BR (1) | BR9707440A (en) |
| CA (1) | CA2245931A1 (en) |
| DE (1) | DE69731768T2 (en) |
| EA (1) | EA000942B1 (en) |
| WO (1) | WO1997030213A1 (en) |
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| JPH0936198A (en) * | 1995-07-19 | 1997-02-07 | Hitachi Ltd | Vacuum processor and semiconductor production line using the processor |
| US5932072A (en) * | 1997-04-22 | 1999-08-03 | Thermo Fibertek Inc. | Paper forming activity blade with mounting buttons |
| US5922173A (en) * | 1997-04-22 | 1999-07-13 | Thermo Fibertek Inc. | Paper forming activity control with lifting variable inertial stimulation blades with limited-vent indented-surfaces |
| US6126786A (en) * | 1998-06-18 | 2000-10-03 | White; James D. | Apparatus and method of generating stock turbulence in a fourdrinier forming section |
| US6464836B2 (en) | 1999-03-19 | 2002-10-15 | Smurfit Carton Y Papel De Mexico S.A. De C.V. | Variable hydraulic pulse drainage cylinder former |
| US6562197B2 (en) * | 2000-11-08 | 2003-05-13 | Andrew S. Forester | Drainage hydrofoil blade |
| US6702925B2 (en) | 2000-12-22 | 2004-03-09 | Vibre-Tech Llc | Method and apparatus for forming a paper or tissue web |
| US6372093B1 (en) | 2001-04-26 | 2002-04-16 | Wilbanks International, Inc. | Adjustable foil apparatus for papermaking machine |
| DE10148921A1 (en) * | 2001-10-04 | 2003-04-10 | Voith Paper Patent Gmbh | Machine for the production of a fibrous web |
| US7101462B2 (en) * | 2001-12-21 | 2006-09-05 | Vibre-Tech, Llc | Method and apparatus for forming a paper or tissue web |
| US6988018B2 (en) * | 2001-12-26 | 2006-01-17 | Eames John D | System and method for analyzing controlling forming sections of a paper machine in operation |
| US6669814B2 (en) | 2002-03-08 | 2003-12-30 | Rock-Tenn Company | Multi-ply paperboard prepared from recycled materials and methods of manufacturing same |
| US6712941B2 (en) * | 2002-04-02 | 2004-03-30 | Weavexx Corporation | Forming board for papermaking machine with adjustable blades |
| GB0311802D0 (en) * | 2003-05-22 | 2003-06-25 | Perplas Ltd | Apparatus |
| CN101522987B (en) | 2006-02-03 | 2012-11-28 | 路易斯·费尔南多·卡布雷拉Y洛佩斯卡拉姆 | Fiber mat forming apparatus and method of preserving the hydrodynamic processes needed to form a paper sheet |
| FI118211B (en) * | 2006-05-19 | 2007-08-31 | Metso Paper Inc | Static dewatering element for web forming machine, has thermally sprayed coating comprising agglomerate of powder particles containing primary particles with average size below preset value |
| CN102056971B (en) * | 2008-07-31 | 2013-09-04 | 东丽株式会社 | Prepreg, preform, molded product, and method for manufacturing prepreg |
| FI20095815A (en) * | 2009-07-29 | 2011-01-30 | Metso Paper Inc | Scraping tool for fiber web machine and scraper assembly on fiber web machine |
| US8163136B2 (en) * | 2010-12-16 | 2012-04-24 | FC Papel LLC | Energy saving papermaking forming apparatus system, and method for lowering consistency of fiber suspension |
| US8551293B2 (en) | 2011-04-21 | 2013-10-08 | Ibs Corp. | Method and machine for manufacturing paper products using Fourdrinier forming |
| CA2842503A1 (en) | 2011-07-21 | 2013-01-24 | Fcpapel Llc | Energy saving papermaking forming apparatus, system, and method for lowering consistency of fiber suspension |
| US8871059B2 (en) | 2012-02-16 | 2014-10-28 | International Paper Company | Methods and apparatus for forming fluff pulp sheets |
| US8974639B2 (en) | 2013-02-04 | 2015-03-10 | Ibs Of America | Angle and height control mechanisms in fourdrinier forming processes and machines |
| US9045859B2 (en) | 2013-02-04 | 2015-06-02 | Ibs Of America | Adjustment mechanism |
| US9593451B2 (en) * | 2014-11-10 | 2017-03-14 | Richard L House | Movable foil blade for papermaking on a fourdrinier, including the lead blade on the forming board box |
| US9284685B1 (en) * | 2014-12-19 | 2016-03-15 | Rpm Technologies, Inc. | Foil apparatus for paper making machine |
| JP2016113742A (en) * | 2016-02-19 | 2016-06-23 | エフシーパペル エルエルシー | Consistency reducing method for energy-saving paper making device and fiber suspension |
| RU2733102C2 (en) | 2016-11-23 | 2020-09-29 | Айбиэс Оф Америка | Papermaking machine control system |
| CN113003943A (en) * | 2019-12-19 | 2021-06-22 | 湖南洛尔赛自动化设备有限公司 | Frosting water jet cutter |
| US11920299B2 (en) | 2020-03-06 | 2024-03-05 | Ibs Of America | Formation detection system and a process of controlling |
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-
1996
- 1996-02-13 US US08/600,833 patent/US5830322A/en not_active Expired - Lifetime
-
1997
- 1997-02-11 WO PCT/US1997/001677 patent/WO1997030213A1/en active IP Right Grant
- 1997-02-11 EA EA199800687A patent/EA000942B1/en not_active IP Right Cessation
- 1997-02-11 JP JP9529376A patent/JP2000504795A/en active Pending
- 1997-02-11 DE DE69731768T patent/DE69731768T2/en not_active Expired - Lifetime
- 1997-02-11 EP EP97905722A patent/EP0954633B1/en not_active Expired - Lifetime
- 1997-02-11 BR BR9707440A patent/BR9707440A/en not_active IP Right Cessation
- 1997-02-11 CA CA002245931A patent/CA2245931A1/en not_active Abandoned
-
1998
- 1998-10-08 US US09/168,808 patent/US5951823A/en not_active Expired - Lifetime
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