EP0993521B1 - Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen - Google Patents
Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen Download PDFInfo
- Publication number
- EP0993521B1 EP0993521B1 EP98939588A EP98939588A EP0993521B1 EP 0993521 B1 EP0993521 B1 EP 0993521B1 EP 98939588 A EP98939588 A EP 98939588A EP 98939588 A EP98939588 A EP 98939588A EP 0993521 B1 EP0993521 B1 EP 0993521B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wedge
- deflection
- degrees
- suspensions
- zone
- 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.)
- Revoked
Links
- 239000000725 suspension Substances 0.000 title claims description 7
- 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 5
- 230000002349 favourable effect Effects 0.000 description 3
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 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
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
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.
- Such devices are e.g. known from AT 402.517. to So-called S-train rollers are achieved here on the one hand to achieve a high dry content 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.
- 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.
- a favorable development of the invention is characterized in that due to the roller pair following the wedge zone, both one Surface pressure force, as well as a line pressure force from the Pulp suspension formed web is exercised.
- both one Surface pressure force, as well as a line pressure force from the Pulp suspension formed web is exercised.
- 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 different sheet weights can be produced.
- a favorable development of the invention is characterized in that the first deflection and pressure roller of the pair of rollers below the end the wedge zone and immediately after it is arranged, the Wedge zone out over the first subsequent deflection and pressure roller be and the opposite part into the gusset between Screen belt and roller can be enough. This will further shorten it reached the machine, which further through this design Fiber web between the sieves up to the first deflection and pressure roller is stabilized in, causing the fibers to duck back and in Another consequence is a lateral squeezing of the fiber before the S-train and the press nip is prevented. It also becomes a subsequent one Extending the filter cake and thus preventing rewetting. The throughput capacity of the Drainage device increased.
- An advantageous embodiment of the invention is characterized in that that the wrapping of the first deflection and pressure roller between 10th and 90 degrees, preferably about 60 degrees.
- Another embodiment of the invention is characterized in that the looping of the second deflection and pressure roller between 30 and 120 degrees, preferably about 100 degrees.
- 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 is a drainage device according to the prior art dertechnik und
- Fig. 2 shows a drainage device according to the invention shows.
- An upper sieve or filter belt 4 runs over an upper one Deflection roller 6, which is adjustable and adjustable in its position, and in further sequence via a deflection roller 7 in the through the plates 10 and 11th formed wedge.
- the second sieve or filter belt 5 runs over a corresponding deflection roller 8 and a further deflection roller 9 also in the wedge.
- the substance to be dewatered for example fibrous material, is over a headbox 12 also placed in the wedge.
- Wedge top 10 and the wedge base 11 are on the side of the headbox by means of a Threaded spindle 13 mechanically connected and adjustable in distance.
- Wedge top 10 is here adjustable in height by means of a pneumatic or hydraulic hose.
- the compressed air or hydraulic fluid is supplied via a connection 15.
- a slide shoe 17 serves to accommodate the axial Forces.
- 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 deflection and pressure rollers executed.
- the roller 22 is pressed against the roller 21 by means of hydraulic cylinder 23, whereby a nip 24 with additional Line force results.
- This is followed by further pairs of press rolls 25, 26 provided so that at the end of the dewatering device Desired dryness can be achieved.
- the first deflection and pressure roller 21 of the pair of rollers is here below the end of the wedge zone 10, 11 and arranged directly after it, the wedge plate 10 is guided over the deflection and pressure roller 21 and the opposite part of the wedge plate 11 into the gusset between screen belt 5 and roller 21 is sufficient. Wrapping the first Deflection and pressure roller 21 is about 60 degrees, while the Wrapping the second deflection and pressure roller 22 about 100 degrees, is.
- the invention is not limited by the examples, so could be Example the arrangement of the deflection and pressure rollers vice versa, i.e. the first roller may be arranged at the top. Also are other adjustment and Pressure mechanisms for the deflection rollers and the pressure rollers possible.
Landscapes
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
- Drying Of Solid Materials (AREA)
Description
Claims (9)
- Vorrichtung zur Entwässerung von Feststoff-Flüssigkeitssuspensionen, insbesondere Faserstoffsuspensionen, bei der die Suspension zwischen zwei Bändern entwässert wird, wobei eine Entwässerungszone als Keilzone ausgebildet ist, dadurch gekennzeichnet, daß jeweils lediglich eine einzige obere und/oder untere Umlenkwalze am Keilbeginn als Spannwalze unmittelbar am Keilanfang vorgesehen ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß durch das der Keilzone nachfolgende Walzenpaar sowohl eine Flächenpreßkraft, als auch eine Linienpreßkraft auf die aus der Faserstoffsuspension gebildete Stoffbahn ausgeübt wird.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Keilhöhe an ihrem ausgangsseitigen Ende, insbesondere über die gesamte Bahnbreite, in der Höhe einstellbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die erste Umlenk- und Anpreßwalze des Walzenpaares unterhalb des Endes der Keilzone und direkt anschließend daran angeordnet ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Keilzone bis über die erste nachfolgende Umlenk- und Anpreßwalze geführt ist und der gegenüberliegende Teil bis in den Zwickel zwischen Siebband und Walze reicht.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Umschlingung der ersten Umlenk- und Anpreßwalze zwischen 10 und 90 Grad, vorzugsweise etwa 60 Grad beträgt.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Umschlingung der zweiten Umlenk- und Anpreßwalze zwischen 30 und 120 Grad, vorzugsweise etwa 100 Grad, beträgt.
- Vorrichtung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß der / die Umschlingungswinkel veränderbar, insbesondere einstellbar, ist / sind.
- Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Keiloberteil insbesondere selbsttätig beispielsweise elastisch, einstellbar und der gegenüberliegende Teil fix ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT112097A AT405656B (de) | 1997-07-01 | 1997-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
| AT112097 | 1997-07-01 | ||
| PCT/EP1998/004046 WO1999001610A1 (de) | 1997-07-01 | 1998-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0993521A1 EP0993521A1 (de) | 2000-04-19 |
| EP0993521B1 true EP0993521B1 (de) | 2002-04-17 |
Family
ID=3507027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98939588A Revoked EP0993521B1 (de) | 1997-07-01 | 1998-07-01 | Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere faserstoffsuspensionen |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0993521B1 (de) |
| JP (1) | JP4339412B2 (de) |
| CN (1) | CN1105804C (de) |
| AT (1) | AT405656B (de) |
| AU (1) | AU8804898A (de) |
| BR (1) | BR9810512A (de) |
| CA (1) | CA2294389C (de) |
| DE (1) | DE59803866D1 (de) |
| WO (1) | WO1999001610A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE527778E (sv) * | 2004-11-02 | 2014-09-30 | Valmet Technologies Inc | Förfarande och anordning vid en dubbelvirapress |
| CA2657627A1 (en) * | 2009-03-10 | 2010-09-10 | Services Techniques Hds | Twin wire press |
Family Cites Families (6)
| 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 |
| FI820776A7 (fi) * | 1982-03-05 | 1983-09-06 | Valmet Oy | Paperikoneen puristinosa. |
| 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 AT112097A patent/AT405656B/de not_active IP Right Cessation
-
1998
- 1998-07-01 CN CN98806820A patent/CN1105804C/zh not_active Expired - Lifetime
- 1998-07-01 BR BR9810512-4A patent/BR9810512A/pt not_active IP Right Cessation
- 1998-07-01 DE DE59803866T patent/DE59803866D1/de not_active Revoked
- 1998-07-01 JP JP50632999A patent/JP4339412B2/ja not_active Expired - Lifetime
- 1998-07-01 CA CA002294389A patent/CA2294389C/en not_active Expired - Lifetime
- 1998-07-01 EP EP98939588A patent/EP0993521B1/de not_active Revoked
- 1998-07-01 AU AU88048/98A patent/AU8804898A/en not_active Abandoned
- 1998-07-01 WO PCT/EP1998/004046 patent/WO1999001610A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0993521A1 (de) | 2000-04-19 |
| WO1999001610A1 (de) | 1999-01-14 |
| DE59803866D1 (de) | 2002-05-23 |
| CA2294389A1 (en) | 1999-01-14 |
| JP2002508814A (ja) | 2002-03-19 |
| AT405656B (de) | 1999-10-25 |
| CN1261936A (zh) | 2000-08-02 |
| ATA112097A (de) | 1999-02-15 |
| AU8804898A (en) | 1999-01-25 |
| CN1105804C (zh) | 2003-04-16 |
| JP4339412B2 (ja) | 2009-10-07 |
| CA2294389C (en) | 2007-10-30 |
| BR9810512A (pt) | 2000-09-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| RTI1 | Title (correction) |
Free format text: METHOD FOR DEHYDRATING SOLID-BASED LIQUID SUSPENSIONS, IN PARTICULAR FIBER-BASED SUSPENSIONS |
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