EP0993520B1 - Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen - Google Patents
Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen Download PDFInfo
- Publication number
- EP0993520B1 EP0993520B1 EP98939587A EP98939587A EP0993520B1 EP 0993520 B1 EP0993520 B1 EP 0993520B1 EP 98939587 A EP98939587 A EP 98939587A EP 98939587 A EP98939587 A EP 98939587A EP 0993520 B1 EP0993520 B1 EP 0993520B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wedge
- deflection
- zone
- degrees
- suspensions
- 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.)
- Expired - Lifetime
Links
- 239000000725 suspension Substances 0.000 title claims description 8
- 239000006194 liquid suspension Substances 0.000 title claims description 3
- 239000007787 solid Substances 0.000 title claims 2
- 239000000835 fiber Substances 0.000 title description 6
- 238000003825 pressing Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- D21F3/04—Arrangements thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts
Definitions
- the invention relates to a device for dewatering solid-liquid suspensions, in particular fiber suspensions, in which the Suspension is drained between two belts, one being Drainage zone is designed as a wedge zone and through that of the wedge zone subsequent pair of rollers both a surface pressure, and a Line pressing force on the fabric web formed from the fiber suspension is exercised.
- Such devices are e.g. known from AT 402.517.
- S-train rollers with a surface pressure and subsequently several press nips provided with a line pressure. Due to the multitude of diversion and Press rolls result in a relatively long length of the machine.
- EP 0 460 638 A1 shows a device for washing Pulp, in which a pulp suspension is only wedge-shaped between two converging tapes and then by several Rolls is deflected, with an additional roller at the end of the wedge zone is provided for transporting the lower belt.
- US 4,525,241 shows the press part of a paper machine with a range of press nips, however, due to the thinness of the web, no S-train rollers are provided. The aim of the invention is therefore to simplify the known device and a shorter and more compact design, as a result of this To achieve cost reductions.
- An advantageous embodiment of the invention is characterized in that that the wedge height at its output end, especially over the total web width, the height is adjustable. This allows the most varied Sheet weights are produced.
- An advantageous embodiment of the invention is characterized in that that the wrap of the first combined deflection and pressure roller is between 10 and 90 degrees, preferably about 60 degrees.
- Another embodiment of the invention is characterized in that the wrapping of the second combined deflection and pressure roller is between 30 and 120 degrees, preferably about 100 degrees.
- a favorable embodiment of the invention is characterized in that only a single upper and / or lower deflection roller at the beginning of the wedge is provided as a tension roller directly at the beginning of the wedge. Thereby additional rollers can be saved, which leads to a corresponding shortening the system and significant cost savings.
- a favorable development of the invention is characterized in that the wedge upper part in particular automatically, for example, elastically, adjustable and the opposite part is fixed.
- FIG. 1 shows a drainage device according to the prior art Technique
- Fig. 2 shows a drainage device according to the invention shows.
- An upper sieve or filter belt 4 runs over an upper deflection roller 6, which is adjustable and adjustable in its position, and subsequently via a deflection roller 7 in the wedge formed by the plates 10 and 11.
- the second screen or filter belt 5 runs over a corresponding deflection roller 8 and a further deflection roller 9 also in the wedge.
- the one to be drained Material for example fiber material, is passed through a headbox 12 also introduced into the wedge.
- the wedge upper part 10 and the wedge lower part 11 are on the side of the headbox by means of a threaded spindle 13 mechanically connected and adjustable in distance.
- the wedge upper part 10 is here by means of a pneumatic or hydraulic hose adjustable in height.
- the supply of compressed air or the hydraulic fluid takes place via a connection 15.
- stop screws 16 On Slide shoe 17 serves to absorb the axial forces.
- bracket 18 for candelabra i.e. for the exchange of the endless sieve belts, intended.
- Fig. 2 it can be seen that the upper deflection roller 6, which is in its position is adjustable and adjustable by means of hydraulic or pneumatic cylinders represents only deflection roller for the upper wire 4.
- the previous Lower deflection roller is therefore omitted, which makes it much more compact Construction can be achieved.
- the medium hydraulic or pneumatic cylinder 9 is adjustable and adjustable.
- the two S-train rollers 21, 22 are here as combined deflection and Pressure rollers executed.
- the pressure of the roller 22 against the roller 21 takes place by means of hydraulic cylinder 23, whereby a nip 24 with additional Line force results.
- Press roll pairs 25, 26 are provided so that at the end of the dewatering device the desired dry content can be achieved.
- the first combined deflection and pressure roller 21 of the pair of rollers is here below the end of the wedge zone 10, 11 and directly after it arranged, the wedge plate 10 to over the combined deflection and
- Pressure roller 21 is guided and the opposite part of the wedge plate 11 extends into the gusset between screen belt 5 and roller 21.
- the wrap the first combined deflection and pressure roller 21 about 60 degrees while wrapping the second combined Deflection and pressure roller 22 is about 100 degrees.
- the invention is not limited by the examples, so could be Example of the arrangement of the combined deflection and pressure rollers vice versa, i.e. the first roller may be arranged at the top. There are others too Adjustment and pressure mechanisms for the deflection rollers and the pressure rollers possible.
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Filtration Of Liquid (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0112297A AT404946B (de) | 1997-07-01 | 1997-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
AT112297 | 1997-07-01 | ||
PCT/EP1998/004045 WO1999001609A1 (de) | 1997-07-01 | 1998-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0993520A1 EP0993520A1 (de) | 2000-04-19 |
EP0993520B1 true EP0993520B1 (de) | 2002-09-18 |
Family
ID=3507066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98939587A Expired - Lifetime EP0993520B1 (de) | 1997-07-01 | 1998-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
Country Status (10)
Country | Link |
---|---|
US (1) | US6338773B1 (zh) |
EP (1) | EP0993520B1 (zh) |
JP (1) | JP4461202B2 (zh) |
CN (1) | CN1134568C (zh) |
AT (1) | AT404946B (zh) |
AU (1) | AU8804798A (zh) |
BR (1) | BR9810959A (zh) |
CA (1) | CA2294903C (zh) |
DE (1) | DE59805627D1 (zh) |
WO (1) | WO1999001609A1 (zh) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408461B (de) * | 1999-11-17 | 2001-12-27 | Andritz Ag Maschf | Vorrichtung zur entwässerung einer faserstoffbahn |
SE516830C2 (sv) * | 2000-08-01 | 2002-03-12 | Metso Paper Inc | Dubbelvirapress |
AT412483B (de) * | 2003-03-26 | 2005-03-25 | Andritz Ag Maschf | Verfahren und vorrichtung zur mahlung von faserstoffen |
SE526798C2 (sv) * | 2004-03-22 | 2005-11-08 | Metso Paper Inc | Dubbelvirapress med höj- och sänkbart avvattningsbord |
SE527250C2 (sv) * | 2004-06-14 | 2006-01-31 | Metso Paper Inc | Stativ för en dubbelvirapress och metod för virabyte i en dubbelvirapress innefattande nämnda stativ |
US7381329B1 (en) * | 2006-11-07 | 2008-06-03 | William Harris Moss | Belt press apparatus and method for high solids capture and high solids content |
CN102046878A (zh) * | 2008-05-28 | 2011-05-04 | 美佐纸业股份有限公司 | 用于对纤维悬浮液进行脱水的双网压榨机和方法 |
US7964105B2 (en) * | 2008-08-07 | 2011-06-21 | William Harris Moss | Method for improving belt press dewatering |
EP2405986A1 (en) * | 2009-03-09 | 2012-01-18 | Univenture, Inc. | Method and apparatus for separating particles from a liquid |
SE535614C2 (sv) * | 2010-12-22 | 2012-10-16 | Metso Paper Sweden Ab | Metod och anordning för att förbättra avvattningen i en dubbelvirapress |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT387379B (de) * | 1982-03-01 | 1989-01-10 | Andritz Ag Maschf | Einrichtung zur rueckbefeuchtung des filterkuchens an entwaesserungsmaschinen |
FI820776L (fi) * | 1982-03-05 | 1983-09-06 | Valmet Oy | Pressparti i pappersmaskin |
AT385681B (de) * | 1986-08-18 | 1988-05-10 | Andritz Ag Maschf | Druckeinrichtung fuer maschinen bzw. damit versehene maschine zum entwaessern bzw. filtrieren bzw. fuer pressgut |
DE4024175A1 (de) * | 1990-06-06 | 1992-02-27 | Bernt U Treu | Verfahren und vorrichtung zum waschen von zellstoff |
EP0511951B1 (de) * | 1991-04-30 | 1995-10-11 | Huyck-Austria Gesellschaft M.B.H. | Siebbandpresse bzw. Manchon |
AT402951B (de) * | 1995-09-19 | 1997-10-27 | Andritz Patentverwaltung | Vorrichtung zur entwässerung von vfaserstoff-flüssigkeitsmischungen,insbesondere zellstoffsuspensionen |
AT402517B (de) * | 1995-11-10 | 1997-06-25 | Andritz Patentverwaltung | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere zellstoffsuspensionen |
-
1997
- 1997-07-01 AT AT0112297A patent/AT404946B/de not_active IP Right Cessation
-
1998
- 1998-07-01 DE DE59805627T patent/DE59805627D1/de not_active Expired - Fee Related
- 1998-07-01 AU AU88047/98A patent/AU8804798A/en not_active Abandoned
- 1998-07-01 EP EP98939587A patent/EP0993520B1/de not_active Expired - Lifetime
- 1998-07-01 WO PCT/EP1998/004045 patent/WO1999001609A1/de active IP Right Grant
- 1998-07-01 CA CA002294903A patent/CA2294903C/en not_active Expired - Lifetime
- 1998-07-01 BR BR9810959-6A patent/BR9810959A/pt not_active IP Right Cessation
- 1998-07-01 CN CNB988068214A patent/CN1134568C/zh not_active Expired - Lifetime
- 1998-07-01 US US09/445,971 patent/US6338773B1/en not_active Expired - Lifetime
- 1998-07-01 JP JP50632899A patent/JP4461202B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
BR9810959A (pt) | 2000-09-26 |
AU8804798A (en) | 1999-01-25 |
CA2294903C (en) | 2008-10-21 |
JP4461202B2 (ja) | 2010-05-12 |
US6338773B1 (en) | 2002-01-15 |
EP0993520A1 (de) | 2000-04-19 |
WO1999001609A1 (de) | 1999-01-14 |
CN1134568C (zh) | 2004-01-14 |
CN1261937A (zh) | 2000-08-02 |
AT404946B (de) | 1999-03-25 |
ATA112297A (de) | 1998-08-15 |
JP2002508813A (ja) | 2002-03-19 |
DE59805627D1 (de) | 2002-10-24 |
CA2294903A1 (en) | 1999-01-14 |
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