EP1245724A2 - Drucksortierer zum Entfernen von Störstoffen aus einer störrstoffhaltigen Papierfasersuspension und seine Verwendung - Google Patents
Drucksortierer zum Entfernen von Störstoffen aus einer störrstoffhaltigen Papierfasersuspension und seine Verwendung Download PDFInfo
- Publication number
- EP1245724A2 EP1245724A2 EP02001744A EP02001744A EP1245724A2 EP 1245724 A2 EP1245724 A2 EP 1245724A2 EP 02001744 A EP02001744 A EP 02001744A EP 02001744 A EP02001744 A EP 02001744A EP 1245724 A2 EP1245724 A2 EP 1245724A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure sorter
- sorter according
- sieve
- 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
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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
- D21D5/023—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.
- Pressure sorters are used in the processing of paper fiber suspensions, namely to process the fiber suspension in a wet sieving. To do this contains Such a pressure sorter has at least one sieve with a large number of openings is provided. The fibers contained in the suspension should pass through the openings step through it while rejecting the unwanted solid components on it and be routed out of the sorter. Pressure sorters can also be used Fiber fractionation are used in which the long fibers in the overflow and Pass the short fibers are enriched. As sorting openings are in the Usually round holes are used or slots. In most cases they are pressure sorters of the type considered here equipped with screen clearers that are close to the screen be moved past. As a result, the clogging of the Screen openings prevented.
- the pressure sorters are basically both for the sorting of relatively coarse, as well as very fine contaminants.
- Such sorters are not only used for the respective purpose by choosing the sieves themselves, especially their sorting openings also by constructive design of the machine and choice of operating parameters. It has meanwhile been able to produce sieves with reasonable effort, the very fine ones Openings, e.g. Have slots in the range of tenths of a millimeter. This succeeds separating even very small impurities from the fibers. This positive in itself However, development has led to the sieves and thus also the Sorting machines were getting bigger. The number of stages, i.e. the number of pressure sorter to be passed from the paper fiber suspension in succession greater.
- 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 axially one inside the other pushed, which enables a compact design.
- This sorter is also for the Rough sorting thought. With a rotatably driven screen basket, therefore Wear can be reduced, but this makes the machine complicated and expensive.
- the invention has for its object to build a pressure sorter so that it is compact and has a good separating effect even with fine interfering substances and thereby one relatively high throughput allowed.
- a pressure sorter designed in this way has the advantage that in one and the same Housing several, but at least two sorting operations carried out in succession can be. Optimal sorting quality is achieved with high throughput, because the flow control in the sorter was chosen so that the sieve baskets were centrifugal, that is, radially from the inside to the outside. A series connection of Highly effective sorters are otherwise only with considerable mechanical and technical control effort possible. With the invention, however, the number of Decrease pressure sorters significantly, even with high quality requirements.
- a pressure sorter according to the invention offers particular advantages in fine sorting. Especially in the areas of fiber processing where it is a matter of removing particularly fine impurities (usually slot sorting is there the pressure sorters used for this must be relatively large. Only like that can ensure sufficient throughputs with the fineness of the sorting openings be promoted.
- the invention unfolds its advantages particularly where the series connected Sieves are fine sieves and have approximately the same sieve characteristics, i.e. in the same Sort size range. This is especially the case when the sieves with similar or the same slots are provided, with a slot width of at most 0.8 mm, preferably less than 0.3 mm. It has been shown that in technical Applications often fail to sort a single level for the required quality is sufficient, especially if the contaminants are of the same order of magnitude how the fibers are, and therefore the sieve with a certain probability can happen. This also applies to the highly effective pressure sorters Schlitzsiebkörben. Critical contaminants are primarily adhesive particles (stickies). With This problem cannot be solved by narrower sorting openings. Therefore one must Another sorting step with the same effect with the already cleaned fabric be made to reduce the likelihood of elimination from severe to increase sortable substances.
- the reject rate on the upstream sieve is significantly higher is set as the downstream.
- the reject rate is the volumetric Quantity ratio of the overflow, based on the feed to the corresponding sieve. Because of the higher content of impurities in the feed to the upstream sieve, there can be a reject rate that is approximately twice as high as that of the downstream sieve can be set.
- the pressure sorter according to the invention shown schematically in FIG. 1 has Housing 6 in which there are two sieves, namely the first - upstream - sieve 1 and the second - downstream - sieve 2.
- the pressure sorter is like that built up that the inflowing through the overhead inlet 3
- Paper fiber suspension S is first led to the feed side of the first screen 1.
- On this inlet side there are clearing elements 7 and 8, which belong to the screen clearer 5.
- the sieve is moved by the movement of the clearing elements 7 and 8 1 kept clear of constipation.
- accept substance A1 After the paper fiber suspension S has the first sieve 1 has passed (accept substance A1), it first arrives in the first accept substance space 13 and then into the inlet area of the second sieve 2.
- This sieve is used for sorting again carried out so that the part of the paper fiber suspension that also contains the second sieve 2 has passed through the accept material outlet connection 4 from the housing 6 as accept material A2 is brought out again. Both screens are radial from the inside out flows through.
- the rejected forms a residue on the first sieve 1, which is caused by the first reject outlet 9 is discharged as the first reject R1.
- Something similar happens on the second sieve 2 the residue of which is the second reject R2 through the reject outlet 10 leaves the housing 6.
- a central light material connection 19 can be provided his.
- Such a pressure sorter is usually constructed and assigned as a vertical sorter an underlying drive for the rotor 5, which serves to clear the screen. there allows the housing division 20 to remove the upper part of the pressure sorter. This is occasionally required to do maintenance work inside can. It is important that the rotor 5 and the sieves 1 and 2 are axial Do not hinder pulling apart. For this reason, it can be advantageous To make the inside diameter of the sieve 1 above smaller than that of the one below lying sieve 2. Another advantage of the arrangement shown here is in this, that the clearing elements 7 and 8 belong to the same rotor 5 for both screens 1 and 2 can.
- the inlet spaces of the two screens are separated from one another by a plate 18 which is sealed in a contact-free manner against the rotor 5 by means of an annular gap 29.
- a plate 18 which is sealed in a contact-free manner against the rotor 5 by means of an annular gap 29.
- the plate 18 can be easily removed be divided so that the rotor can stop when the lower sieve is removed shall be.
- the pressure sorter shown in FIG. 2 also has two screens 1 and 2, which are axial are so far apart that they are in different rooms. Unlike the sorter shown in FIG. 1, the fiber suspension S introduced into the housing 6 'via an inlet connection 3 located below. So that's why first flow through sieve 1 at the bottom and the second sieve 2 at the top. Acceptable substance A1, i.e. Passing through the first screen 1, the first accepting material space 13 becomes an external one - Here pump-free - pipeline 17 returned to the pressure sorter by enters an intermediate inlet 16, which is located on the upper part of the housing 6 '. The suction effect at the centrally located intermediate inlet 16 can transport the Support suspension.
- the accept A1 passes from the intermediate inlet 16 into the inlet area of the second screen 2. If he has passed this and has entered the second accepting material space 14, he can led out of the housing as accept material A2 through the accept material outlet connection 4 become.
- the accept outlet spout 4 is in the upper Part of the housing 6 ', that is shown above the housing division 20. With advantage (easy opening of the case) it lies in the lower part. Then there is one Appropriate material collection chamber 28 to be provided, as shown in Fig. 3.
- the special one The construction of this pressure sorter allows - if desired - the two rejects R1 and to lead R2 out of the housing into a common reject outlet 11.
- An aperture is used to control the reject flows provided, e.g. as part of the screen clearer 5, i.e. also rotating. It can be advantageous Aperture 12 to be adjustable.
- the screen clearer 5 is drum-shaped here attached clearing elements, which can be similar to the case shown in Fig. 1. Variations of different clearing elements are possible at any time and adjust according to the existing conditions and requirements.
- the housing fixed cutting disc 26 In cases in which the rejects are to be discharged separately, there is one in the housing fixed cutting disc 26 useful, as indicated in Fig. 3. It forms with a ring 12 'running around the rotor (not shown here in section) a sealing gap 27 which e.g. is about 1 to 3 mm wide.
- the resulting very slight mixing of the two rejects R1 and R2 can be accepted.
- 3 also shows the variant already mentioned: the accept outlet spout 4 is located below the housing division 20, which facilitates its opening.
- the second accepted substance A2 For this purpose, the second accepting material space 14 becomes an accepting material collecting chamber 28 derived, which extends only over a small part of the housing circumference. To this is then the Gutstoffauslaufstutzen 4 connected.
- a particularly compact and space-saving embodiment of the invention Pressure sorter results when the two sieves are pushed axially one inside the other are, i.e. are not in separate rooms. That leads to a low one Housing 6 ".
- FIG. 4 Such an embodiment is shown in FIG. 4.
- the introduced fiber suspension S introduced from above and radially from the inside out passed successively through the two screens 1 and 2.
- the embodiment shown here has a special feature a rotatable inner strainer basket, which serves as the first strainer 1. In that the too this rotating sieve basket belonging to clearing elements 7 are fixed, the sieve is free held.
- the first sieve 1 and the broaching elements 8 belonging to the second sieve 2 are disc-shaped Plate 24 attached. This forms the upper part of the screen clearer 5, from which it follows opening 6 "can be removed upwards.
- the plate 24 contains Openings 25 for the incoming paper fiber suspension S.
- the second screen 2 is in the Housing fixed.
- Throttle ring 21 is present, which is shown only with regard to its function.
- FIG. 5 Similar to the embodiment shown in FIG. 4, that of FIG. 5 has two axially sieves 1 and 2 pushed into each other, which are flowed through from the inside to the outside. However, both screens are fixed, while the clearing elements 7 and 8 on one common rotatable screen clearer 5 are attached. Again, the both rejects R1 and R2 are discharged separately, which has the advantage that differently designed chokes the reject currents can be easily controlled. Where that is not necessary, the two reject flows could also be through a common one Reject nozzles are derived.
- the pressure sorter according to FIG. 6 is particularly favorable the center line 30 of the housing 6 ′′ ′′ does not coincide with the center line 31 of the rotor 5 together, this offset being the distance of the rotor from the two Acceptance connection piece 4 or 15 enlarged. That leads to simple means larger flow cross sections in the areas of larger accept material volume flows.
- This eccentricity 32 can be approximately between 40 and 200 mm, depending on Housing size and is advantageously determined so that the flow rate of the Acceptable material flows cannot assume unfavorable values anywhere.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
- Fig. 1
- Ein Beispiel für einen erfindungsgemäßen Drucksortierer mit axial versetzten Siebkörben und zwei Rejektausläufen;
- Fig. 2
- ein ähnliches Beispiel, aber mit einer externen Gutstoffleitung und einem gemeinsamen Rejektauslauf;
- Fig. 3
- eine Möglichkeit zur getrennten Rejektableitung bei einem Drucksortierer, ähnlich wie in Fig. 2 beschrieben;
- Fig. 4
- einen erfindungsgemäßen Drucksortierer mit einem rotierenden Siebkorb;
- Fig. 5
- einen erfindungsgemäßen Drucksortierer mit zwei feststehenden, axial ineinander geschobenen Siebkörben;
- Fig. 6
- ein Beispiel mit exzentrisch im Gehäuse angeordneten Siebkörben.
- 1-
- erstes Sieb
- 2-
- zweites Sieb
- 3-
- Einlaufstutzen
- 4-
- Gutstoffauslaufstutzen
- 5-
- Rotor
- 6, 6', 6"-
- Gehäuse
- 7-
- Räumelement
- 8-
- Räumelement
- 9-
- Rejektauslauf
- 10-
- Rejektauslauf
- 11
- Rejektauslauf
- 12-
- Blende
- 12'-
- Ring
- 13-
- Gutstoffraum
- 14-
- Gutstoffraum
- 15-
- Gutstoffauslaufstutzen
- 16-
- Zwischeneinlauf
- 17-
- Rohrleitung
- 18-
- Platte
- 19-
- Leichtstoffanschluss
- 20-
- Gehäuseteilung
- 21-
- Drosselring
- 22-
- Spalte
- 23-
- Pumpschaufeln
- 24-
- Platte
- 25-
- Öffnung
- 26-
- Trennscheibe
- 27-
- Dichtspalt
- 28-
- Gutstoff-Sammelkammer
- 29-
- Ringspalt
- 30
- Mittellinie
- 31-
- Mittellinie
- 32-
- Exzentrizität
- S=
- Papierfasersuspension
- A1 =
- Gutstoff
- A2 =
- Gutstoff
- R1=
- Rejekt
- R2=
- Rejekt
Claims (24)
- Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension (S) mit einem Gehäuse (6, 6', 6"), das mindestens zwei zylindrische Siebe (1, 2) enthält,
wobei das Gehäuse mindestens einen Einlaufstutzen (3), mindestens einen Gutstoffauslaufstutzen (4) und mindestens einen Rejektauslauf (9, 10) aufweist,
wobei die Siebe (1, 2) so angeordnet sind, dass sie nacheinander von der durch den Einlaufstutzen (3) in das Gehäuse eingeführten Papierfasersuspension (S) durchströmbar sind, indem der Teil der Papierfasersuspension (S), der das erste Sieb (1) als erster Gutstoff (A1) passiert hat, dem zweiten Sieb (2) zuströmen kann und
wobei der Teil der Papierfasersuspension (S), der auch das zweite Sieb (2) passiert hat, durch den Gutstoffauslauf (4) als zweiter Gutstoff (A2) wieder aus dem Gehäuse herausgeführt wird,
dadurch gekennzeichnet, dass die zugeführte Papierfasersuspension (S) im Gehäuse (6, 6', 6") durch zwei zylindrische Siebe (1, 2) radial von innen nach außen geführt wird. - Drucksortierer nach Anspruch 1,
dadurch gekennzeichnet, dass exakt zwei zylindrische Siebkörbe vorhanden sind. - Drucksortierer nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass beide Siebe (1, 2) schlitzförmige Sortieröffnungen haben. - Drucksortierer nach Anspruch 3,
dadurch gekennzeichnet, dass die Schlitzweite höchstens 0,8 mm beträgt. - Drucksortierer nach Anspruch 4,
dadurch gekennzeichnet, dass die Schlitzweite höchstens 0,3 mm beträgt. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Sortierwirkung bei beiden Siebe (1, 2) etwa gleich ist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass mindestens zwei Siebe (1, 2) koaxial angeordnet sind. - Drucksortierer nach Anspruch 7,
dadurch gekennzeichnet, dass mindestens zwei Siebe (1, 2) von einem einzigen rotierenden Siebräumer (5) von Verstopfungen frei gehalten werden, wobei dessen Räumelemente (7, 8) in geringem Abstand an den Flächen der Siebe (1, 2) vorbeigeführt werden. - Drucksortierer nach Anspruch 8,
dadurch gekennzeichnet, dass das dem Antrieb des Siebräumers (5) näher liegende Sieb (2) einen größeren Durchmesser hat als das weiter liegende Sieb (1). - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass mindestens zwei Rejektausläufe (9, 10) vorhanden sind, wobei jeweils ein Rejektauslauf (9, 10) den Rückstand jeweils eines Siebes (1, 2) ausleitet. - Drucksortierer nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass ein gemeinsamer Rejektauslauf (11) vorhanden ist, der die Rückstände von mindestens zwei Sieben (1, 2) ausleitet. - Drucksortierer nach Anspruch 11,
dadurch gekennzeichnet, dass ein Drosselelement (12) zwischen den Rejekträumen der beiden Siebe (1, 2) vorhanden ist. - Drucksortierer nach Anspruch 12,
dadurch gekennzeichnet, dass das Drosselelement (12) einstellbar ist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass das erste Sieb (1) axial außerhalb des Raumes angeordnet ist, in dem sich das zweite Sieb (2) befindet. - Drucksortierer nach Anspruch 14,
dadurch gekennzeichnet, dass der Gutstoffauslaufstutzen (15) des stromaufwärtigen Siebes (1) extern mit einem Zwischeneinlauf (16) am Gehäuse (6'), der zur Zulaufseite des stromabwärtigen Siebes (2) führt, verbunden ist. - Drucksortierer nach Anspruch 15,
dadurch gekennzeichnet, dass das Gehäuse (6') keine interne Verbindung zwischen dem Gutstoffraum (13) des stromaufwärtigen Siebes (1) und dem Zulaufraum des stromabwärtigen Siebes (2) hat. - Drucksortierer nach Anspruch 16,
dadurch gekennzeichnet, dass der Gutstoffauslauf (15) des stromaufwärtigen Siebes (1) radial außen und dass der Zwischeneinlauf (16) zentral angeordnet ist. - Drucksortierer nach Anspruch 16 oder 17,
dadurch gekennzeichnet, dass die externe Verbindung über eine pumpenfreie Rohrleitung (17) erfolgt. - Drucksortierer nach Anspruch 16, 17 oder 18,
dadurch gekennzeichnet, dass der als Siebräumer (5) dienende Rotor auf seiner oberen Stirnfläche Pumpschaufeln (23) aufweist. - Drucksortierer nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass mindestens zwei Siebe (1, 2) nicht rotierbar sind. - Drucksortierer nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, dass das erste Sieb (1) axial innerhalb des Raumes angeordnet ist, in dem sich das zweite Sieb (2) befindet. - Drucksortierer nach Anspruch 21,
dadurch gekennzeichnet, dass eines der Siebe (1, 2) rotierbar ist. - Verwendung des Drucksortierers nach einem der voranstehenden Ansprüche,
wobei die Konsistenz der zugeführten Papierfasersuspension (S) zwischen 1 bis 3 % beträgt und die Papierfasersuspension (S) frei ist von harten Störstoffen mit einer Ausdehnung von über 3 mm. - Verwendung nach Anspruch 23,
dadurch gekennzeichnet, dass die Rejektrate des ersten Siebes (1) auf das mindestens 1,5-Fache, vorzugsweise Doppelte, der Rejektrate des zweiten Siebes (2) eingestellt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10115298 | 2001-03-28 | ||
DE10115298A DE10115298A1 (de) | 2001-03-28 | 2001-03-28 | Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1245724A2 true EP1245724A2 (de) | 2002-10-02 |
EP1245724A3 EP1245724A3 (de) | 2003-07-02 |
EP1245724B1 EP1245724B1 (de) | 2005-12-07 |
Family
ID=7679390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02001744A Expired - Lifetime EP1245724B1 (de) | 2001-03-28 | 2002-01-25 | Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension und seine Verwendung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20020139723A1 (de) |
EP (1) | EP1245724B1 (de) |
JP (1) | JP2002339283A (de) |
AT (1) | ATE312231T1 (de) |
CA (1) | CA2379425A1 (de) |
DE (2) | DE10115298A1 (de) |
ES (1) | ES2252327T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021112389A1 (de) | 2021-05-12 | 2022-11-17 | Voith Patent Gmbh | Mehrstufige Sortiervorrichtung |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9901148L (sv) * | 1999-03-29 | 2000-06-12 | Valmet Fibertech Ab | Silanordning med ett roterbart och ett stationärt silorgan |
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 |
US8011515B2 (en) * | 2009-05-12 | 2011-09-06 | Ovivo Luxembourg S.á.r.l. | Two stage pulp screening device with two stationary cylindrical screens |
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 |
CN106368038B (zh) * | 2016-11-17 | 2017-11-24 | 绥阳县双龙纸业有限公司 | 一种升流式压力筛 |
CN107641996B (zh) * | 2017-11-14 | 2023-06-09 | 新乡市新平航空机械有限公司 | 一种新型压力筛转子 |
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US3223239A (en) * | 1962-05-11 | 1965-12-14 | Bird Machine Co | Pressure type screening devices |
US4913806A (en) * | 1988-07-04 | 1990-04-03 | Kamyr Ab | Apparatus for screening a suspension of fibrous cellulose pulp |
US4968417A (en) * | 1988-06-16 | 1990-11-06 | Kamyr Ab | Apparatus for screening a suspension of fibrous cellulose pulp |
WO1991019852A1 (en) * | 1990-06-13 | 1991-12-26 | Sunds Defibrator Jylhä Oy | Screening unit for the screening of pulp, especially paper pulp |
US5119953A (en) * | 1990-04-02 | 1992-06-09 | Celleco Hedemora Ab | Pulp suspension screening and fractionation apparatus |
US5622267A (en) * | 1993-08-20 | 1997-04-22 | Valmet Corporation | Method and pressure screen for screening fibre suspension |
EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
WO2000058549A1 (en) * | 1999-03-29 | 2000-10-05 | Valmet Fibertech Ab | Screening apparatus including two screen means |
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DE2140904C3 (de) * | 1971-08-16 | 1974-05-09 | Hermann Finckh, Metalltuch- Und Maschinenfabrik, 7410 Reutlingen | Drucksortierer für Faserstoffsuspensionen |
US4302327A (en) * | 1980-03-17 | 1981-11-24 | The Black Clawson Company | Center flow screening apparatus |
US5884774A (en) * | 1996-03-11 | 1999-03-23 | Aikawa Iron Works Co., Ltd. | Papermaking screen |
DE19702044C1 (de) * | 1997-01-22 | 1998-04-16 | Voith Sulzer Stoffaufbereitung | Sichter für eine Faserstoffsuspension |
SE511786C2 (sv) * | 1998-03-06 | 1999-11-22 | Sunds Defibrator Ind Ab | Silanordning med två silkammare för separering av fibersuspensioner |
JP3443361B2 (ja) * | 1999-04-23 | 2003-09-02 | 相川鉄工株式会社 | スクリーン装置 |
AT408771B (de) * | 2000-02-03 | 2002-03-25 | Andritz Ag Maschf | Sortierer zur reinigung einer faserstoffsuspension |
-
2001
- 2001-03-28 DE DE10115298A patent/DE10115298A1/de not_active Withdrawn
-
2002
- 2002-01-25 EP EP02001744A patent/EP1245724B1/de not_active Expired - Lifetime
- 2002-01-25 AT AT02001744T patent/ATE312231T1/de not_active IP Right Cessation
- 2002-01-25 DE DE50205150T patent/DE50205150D1/de not_active Expired - Lifetime
- 2002-01-25 ES ES02001744T patent/ES2252327T3/es not_active Expired - Lifetime
- 2002-03-14 US US10/096,901 patent/US20020139723A1/en not_active Abandoned
- 2002-03-27 CA CA002379425A patent/CA2379425A1/en not_active Abandoned
- 2002-03-28 JP JP2002092616A patent/JP2002339283A/ja active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3223239A (en) * | 1962-05-11 | 1965-12-14 | Bird Machine Co | Pressure type screening devices |
US4968417A (en) * | 1988-06-16 | 1990-11-06 | Kamyr Ab | Apparatus for screening a suspension of fibrous cellulose pulp |
US4913806A (en) * | 1988-07-04 | 1990-04-03 | Kamyr Ab | Apparatus for screening a suspension of fibrous cellulose pulp |
US5119953A (en) * | 1990-04-02 | 1992-06-09 | Celleco Hedemora Ab | Pulp suspension screening and fractionation apparatus |
WO1991019852A1 (en) * | 1990-06-13 | 1991-12-26 | Sunds Defibrator Jylhä Oy | Screening unit for the screening of pulp, especially paper pulp |
US5622267A (en) * | 1993-08-20 | 1997-04-22 | Valmet Corporation | Method and pressure screen for screening fibre suspension |
EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
WO2000058549A1 (en) * | 1999-03-29 | 2000-10-05 | Valmet Fibertech Ab | Screening apparatus including two screen means |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021112389A1 (de) | 2021-05-12 | 2022-11-17 | Voith Patent Gmbh | Mehrstufige Sortiervorrichtung |
WO2022238188A1 (de) | 2021-05-12 | 2022-11-17 | Voith Patent Gmbh | Mehrstufige siebsortiervorrichtung |
Also Published As
Publication number | Publication date |
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US20020139723A1 (en) | 2002-10-03 |
ATE312231T1 (de) | 2005-12-15 |
DE50205150D1 (de) | 2006-01-12 |
EP1245724B1 (de) | 2005-12-07 |
DE10115298A1 (de) | 2002-10-17 |
ES2252327T3 (es) | 2006-05-16 |
CA2379425A1 (en) | 2002-09-28 |
EP1245724A3 (de) | 2003-07-02 |
JP2002339283A (ja) | 2002-11-27 |
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