EP1215335A1 - Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension - Google Patents
Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension Download PDFInfo
- Publication number
- EP1215335A1 EP1215335A1 EP01122711A EP01122711A EP1215335A1 EP 1215335 A1 EP1215335 A1 EP 1215335A1 EP 01122711 A EP01122711 A EP 01122711A EP 01122711 A EP01122711 A EP 01122711A EP 1215335 A1 EP1215335 A1 EP 1215335A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen element
- pressure sorter
- sorter according
- screen
- housing
- 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
- 238000004140 cleaning Methods 0.000 title abstract description 3
- 239000012535 impurity Substances 0.000 title description 9
- 229920001131 Pulp (paper) Polymers 0.000 title description 2
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000000356 contaminant Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 230000002452 interceptive effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 239000002657 fibrous material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000010893 paper waste Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/06—Rotary screen-drums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/023—Stationary screen-drums
- D21D5/026—Stationary screen-drums with rotating cleaning foils
Definitions
- the invention relates to a pressure sorter according to the preamble of claim 1 or claim 2.
- Pressure sorters are used in the processing of paper fiber suspensions, to process the fiber suspension in a wet sieving. To do this contains a Such a sorter has at least one sieve element with a large number of Openings are provided. The fibers contained in the suspension should pass through the Open openings while holding the unwanted solid components on it rejected and routed out of the sorter. As sorting openings round holes or slits are usually used. In most cases Provide pressure sorters of the type considered here with screen clearers, which are on the screen have clearing surfaces moved past. As a result, in a manner known per se Clogging of the sieve openings prevented.
- WO 00/58549 A1 shows a sorter with a vertical housing, in which there are two screen elements flowed through successively by the paper fiber suspension to be cleaned are located. The two screen elements are at least partially axial pushed together, which enables a compact design.
- Other versions with two successively flowed through sieves are from EP 0 955 408 A2 and DE 21 40 904 known.
- the first sieve is cylindrical and is set in rotation. This
- apparatuses are disadvantageous in many applications. This is especially true with the Processing of coarse materials.
- a cylindrical sieve has in particular Disadvantage that the elongated ones, which tend to spin or wrap Impurities can easily put on such a sieve and then as a result of Rotation lashed down. You are then only manual after switching off removable.
- a flat disc-shaped sieve e.g. is known from WO 00/52260 a simple structure and takes up little space. However, it has only a small one Screen area, which is disadvantageous.
- the invention has for its object to build a pressure sorter so that it is insensitive to clogging contaminants and at the same time good Sorting quality delivers.
- Sorting quality delivers.
- it should be usable for dissolved waste paper, that still a large part of the originally contained, little comminuted impurities contains.
- a pressure sorter of the type according to the invention is particularly suitable at the beginning of the To be used, where - still - a relatively large one Proportion of coarser contaminants in the suspension is carried.
- Waste paper is often suspended in the pulper or in a pulping drum an impurity content of over 2% of the solid. Part of this contaminant is relative coarse, so it is also rejected to a large extent in a 4mm perforation.
- the suspension After entering the pressure sorter according to the invention, the suspension meets the Inlet side of the first screen element. Its rotation creates a centrifugal force, with which the impurities are thrown off the surface of this sieve element, provided that they are specifically heavier than the suspension surrounding them.
- the more the longitudinal direction of the sieve opening is radial (instead of axial) is aligned the stronger the free spinning effect and the lower the Danger of particles getting stuck in the openings.
- Heavy parts that on Screen elements are rejected as intended, leave its inlet area relatively quickly and are removed from the housing by the coarse project outlet. She Light impurities, rejected due to their size, especially plastic films.
- the sieve is not just less risk of wear, but it is also not so easy due to pieces of wire, Glass fragments and small stones clogged.
- the spin effect depends of course on the speeds and the Radius at the point under consideration.
- the particular advantage of the invention is that that the first screen element is at least partially conical.
- a conical one Form combines the advantages of a large screen area with sufficient Spin effect from the sieve area.
- the pressure sorter according to the invention is light with an effective one Equip light dirt discharge. Styrofoam and film pieces can be made using the Centrifugal forces are already concentrated and removed before they are the first Sieve element have passed. The same applies to air. This accumulation and derivation of Easy parts are favored by a flat or conical first screen element.
- Fig. 1 shows, even if only schematically, the most important functional parts to belong to the pressure sorter according to the invention.
- this is in the housing Device introduced the paper fiber suspension S through the inlet nozzle 3 and first arrives in the inlet space 10.
- Its opening angle ⁇ is adapted to the requirements and lies in usually between 60 and 120 °.
- An important feature of the invention is that the first screen element 1 is set in rotation in such a machine can.
- the rotor 24 is used for this purpose.
- fixed sieve clearers 8 are indicated, which refer to the accept side of this sieve element, that is, on the outflow side and Generate pressure pulses.
- the housing of the pressure sorter is built so that the pass A1 of the first Sieve element 1 can go directly to the inlet side of the second sieve element 2.
- the this sieve element 2 passing pass A2 is through the accept outlet 4 and rejected overflow R2 discharged through the fine reject outlet 6.
- the second screen element 2 provides moving scrapers 9, which here are connected to the rotor 24 are connected, that is, driven at the same speed as the screen element 1. However, it is quite conceivable that different speeds are advantageous.
- the first screen element 1 is to be driven by a further shaft (24 'in FIG. 3) which e.g. would be guided within a rotor 26.
- a cylindrical sieve is particularly advantageous as the second sieve element 2, too Sieve basket called, chosen.
- Such sieve baskets offer both a large sieve area and also high stability and easy clearability.
- pressure sorters are no longer a problem due to coarse contaminants expected. A small screen hole can therefore be selected.
- Fig. 2 the forces that act on a solid particle 14 are shown qualitatively, which is located near the screen opening 12.
- the centrifugal force 15 acts radially outwards and the drag force 16 in the direction of the sieve opening. at The centrifugal force 15 is heavy enough to make a resultant 17 too heavy generate that removes the solid particle 14 from the screen element 1.
- Important for that Sorting effect is the smallest diameter 13 of the sorting opening 12. In typical Applications of the subject of the invention, this diameter is at least 4 mm, because there is a relatively coarse material here.
- a phase in the entry area of the Sorting openings 12 can block the behavior of the rotating sieve element 1 improve. Under certain circumstances it makes sense to have different sizes of the sorting openings close.
- the pressure sorter according to the invention also be a horizontal sorter, that is to say a have horizontal axis. This sometimes brings space advantages and can Improve the discharge of heavy parts through the coarse project outlet 5, since here the Gravity becomes supportive.
- the shape of the first screen element plays how has already played an important role in determining the properties of the Pressure screen.
- the first screen element 1 ' have several sections whose opening angles ⁇ are different.
- the pressure sorter according to the invention already indicated in FIG. 1 is in FIG. 7 drawn a little more detailed without this figure being a construction drawing would be understood.
- the first screen element 1 designed in a conical shape, divides the upper one Part of the housing in an inlet space 10, which with the inlet nozzle 3 for the Suspension communicates. Only a part of the screen openings 12 is shown. A number of is located centrally within the first screen element 1 fixed screen clearers 8. These are on their underside with the housing connected.
- the two sieve elements are arranged so that the first sieve element 1 divides the upper part of the housing into the inlet space 10 and the first accept substance space 11. This first accepting material space 11, which is located centrally within the first screening element 1 is connected to the inlet area to the second screen element 2.
- the second Sieve element 2 in turn divides the accepted material space 20 from the lower part of the housing, which is connected to the outlet 4.
- the inlet area of the second Screen element 2 merges at its lower end into reject space 22, which in turn is connected to the fine reject outlet 6.
- the second screen element 2 is thereby by Blockages kept clear that on the rotor 24, which also drives the serves first sieve element 1, a drum 19 with clearers 9 placed thereon are located.
- the rotor 24 is expediently overhung, i.e. a vigorous, out Bearing 23 consisting of several parts holds the rotor from below. That way the upper part of the rotor remain free of storage, so that those in the upper Do not create spinning contaminants that are part of the sorter, but instead can slide in the middle.
- The is in the upper part of the sorter Light reject outlet 7, which is opened and closed here in cycles by a valve 18 can be.
- Flow guide element 25 In the inlet area to the first screen element 1 is an example Flow guide element 25 indicated. Such guidance elements are used by the To keep inlet spout 3 flowing in suspension in rotation and / or radially lead inside to the screen plate. Since the first screen element 1 in the operation of the Rotating pressure sorter, it is necessary to also rotate the suspension move so that they flow through the sieve openings 12 of the sieve element can.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Description
- Fig. 1
- schematisch: Den funktionalen Aufbau eines erfindungsgemäßen Drucksortierers;
- Fig. 2
- Kraftverhältnisse am konischen Siebelement;
- Fig. 3, 4, 5 + 6
- jeweils eine Variante des Erfindungsgegenstandes;
- Fig. 7
- detaillierter den in Fig. 1 gezeigten Drucksortierer in geschnittener Seitenansicht.
Claims (25)
- Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension (S) mit einem vertikalen Gehäuse, das mindestens zwei im Wesentlichen rotationssymmetrische Siebelemente enthält, die so angeordnet sind, dass sie nacheinander von der durch mindestens einen Einlaufstutzen (3) in das Gehäuse eingeführten Faserstoffsuspension durchströmbar sind,
wobei das stromaufwärtige erste Siebelement (1,1') rotierbar ist und
axial außerhalb und oberhalb des Raumes angeordnet ist, in dem sich das zweite Siebelement (2) befindet,
wobei der Teil der Papierfasersuspension (A2), der auch das zweite Siebelement (2) passiert hat, durch mindestens einen Gutstoffauslauf (4) wieder aus dem Gehäuse herausgeführt wird und
wobei das Gehäuse mindestens einen Grobrejektauslauf (5) für den am ersten Siebelement (1,1') anfallenden Überlauf (R1) und mindestens einen Feinrejektauslauf (6) für den am zweiten Siebelement (2) anfallenden Überlauf (R2) aufweist,
dadurch gekennzeichnet, dass das erste Siebelement (1) eine konische Form hat mit einem Öffnungswinkel (α), der zwischen 10 und 170° liegt. - Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension (S) mit einem horizontalen Gehäuse, das mindestens zwei im Wesentlichen rotationssymmetrische Siebelemente enthält, die so angeordnet sind, dass sie nacheinander von der durch mindestens einen Einlaufstutzen (3) in das Gehäuse eingeführten Faserstoffsuspension durchströmbar sind,
wobei das stromaufwärtige erste Siebelement (1,1') rotierbar ist,
wobei der Teil der Papierfasersuspension (A2), der auch das zweite Siebelement (2) passiert hat, durch mindestens einen Gutstoffauslauf (4) wieder aus dem Gehäuse herausgeführt wird und
wobei das Gehäuse mindestens einen Grobrejektauslauf (5) für den am ersten Siebelement (1,1') anfallenden Überlauf (R1) und mindestens einen Feinrejektauslauf (6) für den am zweiten Siebelement (2) anfallenden Überlauf (R2) aufweist,
dadurch gekennzeichnet, dass das erste Siebelement (1,1') eine konische Form hat mit einem Öffnungswinkel (α), der zwischen 10 und 170° liegt, und axial außerhalb und seitlich neben dem Raum angeordnet ist, in dem sich das zweite Siebelement (2) befindet. - Drucksortierer nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Öffnungswinkel (α) zwischen 60 und 120° beträgt. - Drucksortierer nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass das stromabwärtige zweite Siebelement (2) in dem Gehäuse feststeht, - Drucksortierer nach Anspruch 1, 2, 3 oder 4,
dadurch gekennzeichnet, dass sich in dem dem ersten Siebelement (1,1') zugeordneten Zulaufraum (10) ein zentral angeordneter Leichtrejektauslauf (7) befindet. - Drucksortierer nach Anspruch 5,
dadurch gekennzeichnet, dass der Leichtrejektauslauf (7) durch ein sich in Zeitabständen automatisch kurzzeitig öffnendes Ventil (18) abgeschlossen ist. - Drucksortierer nach Anspruch 5 oder 6,
dadurch gekennzeichnet, dass der das erste Siebelement (1,1') antreibende Rotor (24) an dem dem Leichtrejektauslauf (7) zugewandten Axialende keine Lagerung aufweist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das erste Siebelement (1) eine doppelkonische Form hat, wobei die größeren Durchmesser an den axial äußeren Enden liegen. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Seite des Konus' mit dem größeren Durchmesser in Richtung zum zweiten Siebelement (2) gerichtet ist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass sich an der Durchlaufseite des ersten Siebelementes (1,1') feststehende Siebräumer (8) befinden. - Drucksortierer nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass sich an der Zulaufseite des ersten Siebelementes (1,1') feststehende Räumer befinden. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Zulaufseite des ersten Siebelementes (1,1') eine profilierte Oberfläche hat. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Zulaufseite des ersten Siebelementes (1,1') mit Leisten versehen ist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das erste Siebelement (1,1') mit Rundlöchern versehen ist, deren Durchmesser mindestens zwei Millimeter beträgt. - Drucksortierer nach Anspruch 14,
dadurch gekennzeichnet, dass die Rundlöcher einen Durchmesser von mindestens vier Millimeter aufweisen. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das erste Siebelement (1, 1', 1") mit Sortieröffnungen versehen ist, die je nach radialer Position auf dem Siebelement unerschiedlich groß sind. - Drucksortierer nach Anspruch 16,
dadurch gekennzeichnet, dass die radial weiter außen liegendenden Sortieröffnungen größer sind als die weiter innen liegenden. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass sich in dem dem ersten Siebelement (1,1') zugeordneten Zulaufraum (10) Strömungsleitelemente (25) befinden, die die Umfangsbewegung der darin sich befindenden Suspenison beeinflussen. - Drucksortierer nach Anspruch 20,
dadurch gekennzeichnet, dass die Strömungsleitelemente (25) gewölbte Flächen aufweisen, an denen die Umfangsströmung radial zur Mitte abgelenkt wird. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das zweite Siebelement (2) ein zylindrischer Siebkorb ist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das zweite Siebelement (2) mit runden Sortieröffnungen versehen ist, deren Durchmesser höchstens zwei Millimeter beträgt. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das zweite Siebelement (2) durch bewegte Räumer (9) frei gehalten wird, die zum Rotor (24) gehören, der auch das erste Siebelement (1,1') antreibt. - Drucksortierer nach einem der Ansprüche 1 bis 21,
dadurch gekennzeichnet, dass das zweite Siebelement (2) durch von einem Rotor (26) bewegte Räumer (9) frei gehalten wird und dass das erste Siebelement (1,1') mit einer Drehzahl angetrieben wird, die sich von der dieses Rotors (26) unterscheidet. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der Einlaufstutzen (3) tangential in das Gehäuse mündet. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der größte Innendurchmesser des ersten Siebelementes (1,1') größer ist als der des zweiten Siebelementes (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10060822A DE10060822B4 (de) | 2000-12-07 | 2000-12-07 | Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension |
| DE10060822 | 2000-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1215335A1 true EP1215335A1 (de) | 2002-06-19 |
| EP1215335B1 EP1215335B1 (de) | 2006-08-30 |
Family
ID=7666143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01122711A Expired - Lifetime EP1215335B1 (de) | 2000-12-07 | 2001-09-21 | Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6613191B2 (de) |
| EP (1) | EP1215335B1 (de) |
| AT (1) | ATE338158T1 (de) |
| CA (1) | CA2364728A1 (de) |
| DE (2) | DE10060822B4 (de) |
| ES (1) | ES2269267T3 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1394318A1 (de) * | 2002-07-23 | 2004-03-03 | Voith Paper Patent GmbH | Drucksortierer zum Sieben einer Faserstoffsuspension |
| EP1749923A1 (de) * | 2005-08-04 | 2007-02-07 | Voith Patent GmbH | Apparat zur Behandlung einer Faserstoffsuspension |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE512957C2 (sv) * | 1999-03-29 | 2000-06-12 | Valmet Fibertech Ab | Silanordning med ett roterbart och ett stationärt silorgan |
| SE525785C2 (sv) * | 2003-09-24 | 2005-04-26 | Metso Paper Inc | Förtjockare för koncentrering av fibersuspensioner |
| AT413110B (de) * | 2003-10-15 | 2005-11-15 | Andritz Ag Maschf | Sortierer |
| JP2005171449A (ja) * | 2003-12-15 | 2005-06-30 | Aikawa Iron Works Co Ltd | 製紙用スクリ−ン装置 |
| ITVI20040230A1 (it) * | 2004-09-29 | 2004-12-29 | Comer Spa | Epuratore perfezionato per la depurazione di sospensioni fibrose |
| FI117867B (fi) | 2004-12-10 | 2007-03-30 | Metso Paper Inc | Lajitin ja menetelmä kuitumassan lajittelemiseksi |
| US20070045157A1 (en) * | 2005-08-29 | 2007-03-01 | Kajzer Wieslaw C | Recovery of pin chips from a chip washing reject stream |
| DE102006030905B3 (de) * | 2006-07-04 | 2007-07-19 | Voith Patent Gmbh | Verfahren zur Abscheidung von Verunreinigungen aus einer Faserstoffsuspension |
| DE102006055316B3 (de) * | 2006-11-23 | 2008-01-31 | Voith Patent Gmbh | Siebapparat für eine verschmutzte Faserstoffsuspension und seine Verwendung |
| US8869988B2 (en) * | 2008-05-08 | 2014-10-28 | M-I L.L.C. | Cooling and classifying apparatus for pelletized product processing |
| US8118173B2 (en) * | 2008-12-03 | 2012-02-21 | Westlake Longview Corp. | Streamer trap assembly |
| CN102189036B (zh) * | 2010-03-15 | 2013-10-16 | 钦州鑫能源科技有限公司 | 离心跳汰机 |
| CN105696400B (zh) * | 2015-03-26 | 2018-04-03 | 潍坊信合达机械有限公司 | 一种造纸业用复合式压力筛 |
| US10376924B2 (en) * | 2017-02-23 | 2019-08-13 | Frito-Lay North America, Inc. | Separation apparatus with screen having fixed, non-uniform openings |
| US20260091329A1 (en) * | 2022-10-12 | 2026-04-02 | Andritz Fiedler Gmbh | Screen, in particular pressure screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462901A (en) * | 1981-12-28 | 1984-07-31 | Gauld W Thomas | Apparatus for screening fibrous stock |
| WO1994016141A1 (en) * | 1993-01-11 | 1994-07-21 | Valmet-Tampella Oy | Arrangement in a pressure screen for separating impurities from a fibre suspension fed into the screen |
| EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1046108A (en) * | 1911-07-12 | 1912-12-03 | Charles F Powers | Machine for thickening paper-pulp. |
| DE2140904C3 (de) * | 1971-08-16 | 1974-05-09 | Hermann Finckh, Metalltuch- Und Maschinenfabrik, 7410 Reutlingen | Drucksortierer für Faserstoffsuspensionen |
| US4749475A (en) * | 1986-10-23 | 1988-06-07 | Uniweld, Inc. | Two stage rotary pulp screening device |
| FI900273A7 (fi) * | 1990-01-17 | 1991-07-18 | Tampella Oy Ab | Laite kuitumassan saostamiseksi |
| US5061370A (en) * | 1990-03-20 | 1991-10-29 | Quebec And Ontario Paper Company Ltd. | Screening device for slurries with improved rotor and hub design |
| JP3066129B2 (ja) * | 1991-08-29 | 2000-07-17 | 相川鉄工株式会社 | 製紙用除塵装置 |
| DE19702044C1 (de) * | 1997-01-22 | 1998-04-16 | Voith Sulzer Stoffaufbereitung | Sichter für eine Faserstoffsuspension |
| DE19820432A1 (de) | 1998-05-07 | 1999-11-11 | Voith Sulzer Papiertech Patent | Verfahren und Vorrichtung zum Aufbringen eines Auftragsmediums auf einen laufenden Untergrund |
| SE513794C2 (sv) * | 1999-03-04 | 2000-11-06 | Valmet Fibertech Ab | Silanordning med roterande silskiva |
| SE512957C2 (sv) * | 1999-03-29 | 2000-06-12 | Valmet Fibertech Ab | Silanordning med ett roterbart och ett stationärt silorgan |
-
2000
- 2000-12-07 DE DE10060822A patent/DE10060822B4/de not_active Expired - Fee Related
-
2001
- 2001-09-21 AT AT01122711T patent/ATE338158T1/de not_active IP Right Cessation
- 2001-09-21 EP EP01122711A patent/EP1215335B1/de not_active Expired - Lifetime
- 2001-09-21 ES ES01122711T patent/ES2269267T3/es not_active Expired - Lifetime
- 2001-09-21 DE DE50110868T patent/DE50110868D1/de not_active Expired - Fee Related
- 2001-12-04 US US10/000,303 patent/US6613191B2/en not_active Expired - Fee Related
- 2001-12-06 CA CA002364728A patent/CA2364728A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462901A (en) * | 1981-12-28 | 1984-07-31 | Gauld W Thomas | Apparatus for screening fibrous stock |
| WO1994016141A1 (en) * | 1993-01-11 | 1994-07-21 | Valmet-Tampella Oy | Arrangement in a pressure screen for separating impurities from a fibre suspension fed into the screen |
| EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1394318A1 (de) * | 2002-07-23 | 2004-03-03 | Voith Paper Patent GmbH | Drucksortierer zum Sieben einer Faserstoffsuspension |
| EP1749923A1 (de) * | 2005-08-04 | 2007-02-07 | Voith Patent GmbH | Apparat zur Behandlung einer Faserstoffsuspension |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1215335B1 (de) | 2006-08-30 |
| DE50110868D1 (de) | 2006-10-12 |
| US6613191B2 (en) | 2003-09-02 |
| ES2269267T3 (es) | 2007-04-01 |
| US20020069985A1 (en) | 2002-06-13 |
| DE10060822B4 (de) | 2006-04-27 |
| CA2364728A1 (en) | 2002-06-07 |
| DE10060822A1 (de) | 2002-06-27 |
| ATE338158T1 (de) | 2006-09-15 |
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