EP1673505A1 - Saug- oder blaswalze - Google Patents
Saug- oder blaswalzeInfo
- Publication number
- EP1673505A1 EP1673505A1 EP04766819A EP04766819A EP1673505A1 EP 1673505 A1 EP1673505 A1 EP 1673505A1 EP 04766819 A EP04766819 A EP 04766819A EP 04766819 A EP04766819 A EP 04766819A EP 1673505 A1 EP1673505 A1 EP 1673505A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- suction
- roll
- blow
- roller according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 title abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 239000002657 fibrous material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/10—Suction rolls, e.g. couch rolls
Definitions
- the invention relates to a suction or blowing roll of a machine for the production and / or finishing of a paper, cardboard, tissue or other fibrous web with a rotatable, perforated roll shell and at least one pressure area extending only over part of the roll circumference, which of a stationary pressure box which is open towards the roll shell is formed in the inside of the roll, the pressure box being connected to a negative or excess pressure source and being sealed off from the roll shell by at least one sealing element.
- leakage air in the area of the sealing elements can also lead to noise.
- the object of the invention is therefore to significantly reduce the noise emission with such rollers using simple means.
- the object was achieved in that at least one
- Sealing element an at least substantially air-impermeable, extending in the circumferential direction and outside of the pressure box and / or the Roll cover arranged adjacent or is arranged in the vicinity of a side wall of the at least one pressure box on the outside of the roll shell, wherein the cover is either in contact with the roller shell or has a distance of less than 100 mm to this.
- the cover is therefore either completely impermeable to air or only allows a small amount of air to pass through.
- the cover is either arranged on the inside of the roll shell, where it is preferably directly adjacent to a wall of the printing box.
- the cover is at a short distance from the wall of the
- Roll shell extends. It protrudes as far as possible into the gusset between the roller shell and the belt that carries the fibrous web with it
- the distance between the cover and the roller shell should be less than 20 mm, preferably less than 10 mm.
- the distance between the roller shell and the cover can be essentially the same everywhere or increase or decrease from the pressure box or even fluctuate in the longitudinal and / or transverse direction of the machine.
- cover adjoins a sealing element which runs approximately transversely to the web running direction.
- the air flow in the perforation can be particularly significantly reduced if a cover connects to the end of the pressure box lying in the direction of rotation.
- a cover connects to the end of the pressure box that is opposite to the direction of rotation.
- the cover should extend over a peripheral area of at least 10 mm, preferably at least over a peripheral area of at least 100 mm and in particular more than 200 mm.
- the cover overlaps in the circumferential direction extends the entire area outside the print box.
- the cover extends axially only over part of the perforated area of the roll shell. This applies in particular to rollers with several pressure areas arranged axially next to one another. Here the arrangement of the cover in the area of the pressure area with the greatest negative or positive pressure can suffice.
- An adjusting device is advantageously provided on the suction or blowing roller, by means of which a cover can be changed axially over its entire width or over part of its width with respect to its distance or its angle of attack from the roller shell.
- the adjusting device can be adjusted hydraulically, pneumatically or mechanically, for example.
- the position can be adjusted by a control device which comprises a controller.
- a control device which comprises a controller.
- this acts on the adjusting device via a signal variable, which changes the position of a cover in accordance with the signal variable.
- the control variable measured by the measuring device is, for example, the pressure in the pressure box or the moisture of the fibrous web or the sieve or the felt over which the fibrous web is guided.
- a cover has only one
- the cover may also have openings, for example in the form of Holes or holes.
- spacers in particular in the form of rods, wedges or strips, are arranged between the roller shell and a cover, which spacers can be adjusted in particular by the adjusting device.
- a cover consists either of a single or of several materials, in particular of a metal, a plastic and / or a composite material.
- FIG. 1 a schematic cross section with several covers 5
- FIG. 2 with a continuous cover 5
- FIG. 3 with two covers 5, 10 arranged on the inside and outside in the direction of rotation behind the pressure box
- FIG. 4 the two covers 5, 10 according to FIG. 3, which are adjustable via spacers and an adjusting device.
- rollers are suction rollers with a perforated, rotatable roller jacket 1, as are used in paper machines, in particular in the former, for sheet formation, in the press section and in the dryer section.
- suction rolls are wrapped here by an air-permeable belt 3, that is to say, for example, a sieve or a felt or a belt made of another material, and the fibrous web 2 on the outside, the vacuum region 9 being in the looping region.
- This vacuum region 9 is formed by a fixed pressure box 6 in the interior of the roller, which is open towards the roll shell 1.
- the inside of the pressure box 6 is connected to a vacuum source.
- the pressure box is 6 completely sealed with sealing elements 5 in the form of sealing strips against the roll shell 1.
- air-impermeable covers 5 adjoin the axially extending sealing elements 7 in the circumferential direction. These covers 5 are only a small distance of less than 10 mm from the roll shell 1, the distance from the pressure box 6 increasing. In another embodiment, the distance between the roll shell 1 and one of the covers 5 or both covers 5 remains constant.
- the ventilation of the perforation in which there is still a negative pressure when it emerges from the pressure region 9, can essentially only take place by means of an air flow 8 from the outside.
- This air flow 8 is already impeded by the water mist present in the area of the suction roll.
- a negative pressure forms in the opening gusset between the belt 3 and the suction roll, which counteracts a considerable amount of ventilation of the perforation.
- the cover 5 covers an area of approximately 25 ° and at the outlet of 50 °.
- FIG. 2 shows an embodiment in which the cover 5 lies in the circumferential direction over the entire area outside the print box 6 Area extends. This completely prevents ventilation from the inside, in particular when the distance between the cover 5 and the roller shell 1 is in the range of a few millimeters or the cover 5 is even in contact with the roller shell 1.
- the covers 5 extend axially here over the entire perforated area of the roll shell 1.
- cover 10 in addition to the cover 5, there is a further cover 10 on the outside of the roll shell 1 in the gusset formed by the latter with the band 3. Both covers 5, 10 are preferably adjustable via joints 11 and 12, respectively.
- spacers 13, 14 are attached to the cover 5 and spacers 15, 16 to the cover 10.
- the spacers 13 to 16 consist of either plastic or metal; they can be wedge-shaped; for example, they are plastic wear parts that are easy to replace.
- the spacers 13 to 16 are designed either as rods or as sealing strips, in particular made of sheet metal.
- the sealing strips can also be present in addition to the spacers 13 to 16.
- the spacers 15, 16 ensure that the desired distance between the roller shell 1 and the cover 10 is maintained, since this is attracted to the roller shell 1 due to the low component moment of resistance.
- the component section modulus indicates the strength of the deformation under external loads. A lower deformation means a large section modulus and vice versa.
- the position of the covers 5, 10 is changed by adjusting devices 17 and 18, respectively. These are, for example, via pressure lines 19, 20 with the Spacers 13, 14 and 15, 16 connected so that the distance of the covers 5, 10 with respect to the roll shell 1 both at the front end and at the rear end of the covers 5, 10 by a fluid medium supplied via the lines 19, 20 (Oil, water, air) can be changed hydraulically or pneumatically. Alternatively or additionally, it is provided that the angle of attack of the covers 5, 10 can be adjusted, the joints 11, 12 being influenced by the devices 17, 18 via corresponding lines.
- the devices 17, 18 influence the positions in that mechanical adjustment means, for example in the form of threaded spindles, are present.
- the distances between the devices 17, 18 can be changed by appropriate configurations of the devices 17, 18 either over the entire width of the covers 5, 10 exclusively or also selectively or at certain sections of the covers 5, 10. A distance control in the radial and / or axial direction is thus possible by means of the devices 17, 18.
- the devices 17, 18 are acted upon, for example, by measuring devices with signal variables.
Landscapes
- Paper (AREA)
- Massaging Devices (AREA)
- External Artificial Organs (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10347177A DE10347177A1 (de) | 2003-10-10 | 2003-10-10 | Saug- oder Balswalze |
| PCT/EP2004/052226 WO2005035868A1 (de) | 2003-10-10 | 2004-09-17 | Saug- oder blaswalze |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1673505A1 true EP1673505A1 (de) | 2006-06-28 |
| EP1673505B1 EP1673505B1 (de) | 2008-05-28 |
Family
ID=34428295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04766819A Expired - Lifetime EP1673505B1 (de) | 2003-10-10 | 2004-09-17 | Saug- oder blaswalze |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20070272384A1 (de) |
| EP (1) | EP1673505B1 (de) |
| JP (1) | JP2007508464A (de) |
| AT (1) | ATE397121T1 (de) |
| BR (1) | BRPI0414745B1 (de) |
| CA (1) | CA2541861A1 (de) |
| DE (2) | DE10347177A1 (de) |
| WO (1) | WO2005035868A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008016875U1 (de) | 2008-12-19 | 2009-03-05 | Voith Patent Gmbh | Dichtleiste |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB509436A (en) * | 1938-01-17 | 1939-07-17 | Beloit Iron Work | Suction roll for paper-making machines |
| US2274641A (en) * | 1938-02-07 | 1942-03-03 | Abbott | Suction roll |
| GB736149A (en) * | 1952-06-27 | 1955-09-07 | Bowaters Dev & Res Ltd | Device for reducing noise in suction apparatus of textile fabric drying machines, paper-making machines or the like |
| DE1149602B (de) * | 1955-05-09 | 1963-05-30 | Nat Res Council | Schalldaempfer fuer Papiermaschinensaugwalzen |
| US2772606A (en) * | 1955-07-29 | 1956-12-04 | Joseph J Kelly | Combination suction roll and silencing and cleaning means |
| US2882969A (en) * | 1956-09-26 | 1959-04-21 | Int Paper Co | Silencing means for paper machine suction rolls |
| DE19751283B4 (de) * | 1997-11-19 | 2007-12-20 | Voith Patent Gmbh | Dichtungseinrichtung |
| EP1050621A3 (de) * | 1999-05-07 | 2001-03-28 | Voith Paper Patent GmbH | Vorrichtung zur Behandlung einer Materialbahn |
| DE20104572U1 (de) * | 2001-03-16 | 2001-06-28 | Voith Paper Patent GmbH, 89522 Heidenheim | Saugwalzenanordnung |
| DE10214134A1 (de) * | 2002-03-28 | 2003-10-09 | Voith Paper Patent Gmbh | Dichtungseinrichtung |
-
2003
- 2003-10-10 DE DE10347177A patent/DE10347177A1/de not_active Withdrawn
-
2004
- 2004-09-17 AT AT04766819T patent/ATE397121T1/de not_active IP Right Cessation
- 2004-09-17 JP JP2006530246A patent/JP2007508464A/ja active Pending
- 2004-09-17 BR BRPI0414745A patent/BRPI0414745B1/pt active IP Right Grant
- 2004-09-17 EP EP04766819A patent/EP1673505B1/de not_active Expired - Lifetime
- 2004-09-17 CA CA002541861A patent/CA2541861A1/en not_active Abandoned
- 2004-09-17 WO PCT/EP2004/052226 patent/WO2005035868A1/de not_active Ceased
- 2004-09-17 US US10/575,184 patent/US20070272384A1/en not_active Abandoned
- 2004-09-17 DE DE502004007303T patent/DE502004007303D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005035868A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070272384A1 (en) | 2007-11-29 |
| DE10347177A1 (de) | 2005-05-12 |
| JP2007508464A (ja) | 2007-04-05 |
| EP1673505B1 (de) | 2008-05-28 |
| BRPI0414745B1 (pt) | 2015-12-08 |
| WO2005035868A1 (de) | 2005-04-21 |
| BRPI0414745A (pt) | 2006-11-21 |
| DE502004007303D1 (de) | 2008-07-10 |
| CA2541861A1 (en) | 2005-04-21 |
| ATE397121T1 (de) | 2008-06-15 |
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Inventor name: GUTLEDERER, ERWIN Inventor name: KERSCHBAUMER, JOSEF Inventor name: GRAF-MUELLER, HARALD Inventor name: WULZ, KLAUS Inventor name: SCHREFL, HERBERT Inventor name: KLARER, CHRISTOPH |
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