EP1036879A1 - Tamis sous pression pour suspensions fibreuses et un rotor de nettoyage pour un tel tamis - Google Patents

Tamis sous pression pour suspensions fibreuses et un rotor de nettoyage pour un tel tamis Download PDF

Info

Publication number
EP1036879A1
EP1036879A1 EP00103209A EP00103209A EP1036879A1 EP 1036879 A1 EP1036879 A1 EP 1036879A1 EP 00103209 A EP00103209 A EP 00103209A EP 00103209 A EP00103209 A EP 00103209A EP 1036879 A1 EP1036879 A1 EP 1036879A1
Authority
EP
European Patent Office
Prior art keywords
clearing
sieve
zone
pressure sorter
sorter 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
Application number
EP00103209A
Other languages
German (de)
English (en)
Other versions
EP1036879B1 (fr
Inventor
Hans Friedrich
Gerhard Veh
Josef Bruckner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Voith Sulzer Papiertechnik Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1036879A1 publication Critical patent/EP1036879A1/fr
Application granted granted Critical
Publication of EP1036879B1 publication Critical patent/EP1036879B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D21D5/023—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 pulp suspensions used, namely to process the fiber suspension in a wet sieving.
  • a pressure sorter contains a sieve element which has 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. That is also conceivable Use to separate different fiber components, i.e. the shorter from the longer fibers.
  • Round holes are generally used as sorting openings or Slits.
  • pressure sorters of the type considered here are included Provide screen clearers which have clearing surfaces moved past the screen. Thereby clogging of the screen openings is prevented in a manner known per se.
  • the US 3,586,172 shows a pressure sorter, the rotor in four different zones is divided into a first zone, which only serves to accelerate the substance the suspension reaches a sorting zone, in which the rotor with elevations is equipped that fluidize the fiber suspension and the formation of fiber flakes ("dusters") should prevent.
  • the following sorting zone shows similar to the first Zone indentations in the rotor, which ensure the maintenance of speed and thereby to prevent plugging. The clearing effect of such However, there is little indentation in the present material.
  • EP 0 289 020 proposes thickening the residue too quickly to prevent or reduce by a rotor that the axial transport along the Sieve basket accelerated.
  • the rotor has a large number of projections ("bulges") with inclined surfaces for the production of axial components.
  • the axial impulses are of different strength depending on the axial position of the considered projection generated.
  • the invention has for its object to provide a pressure sorter with a special screen clearer on the entire screen element has a good sorting effect favored and particularly robust, i.e. enables a high throughput and is also suitable for suspensions with a consistency of more than 2%.
  • the subject of the invention develops its particularly advantageous effect in that the screen clearer used therein is provided with a number of clearing elements which differ depending on their position.
  • the shape is the used clearing elements known per se from the prior art however, considerable advantages from their combination in the manner indicated. New is, that in the course of the transport flow, that is, on the path that it has flowed in Fibrous suspension runs along the sieve element until it does not pass through the Parts of the reject outlet that have passed through the sieve element leave the apparatus again, the screen clearing is carried out with increasing clearing effect, namely by differently designed clearing elements.
  • For the sorting effect are not only the size and shape of the sorting openings in the screen element are important, but also the Shape of the clearing elements that keep the sieve element free.
  • Broaching elements generate pressure and suction impulses at the screen openings Suction impulses are used for clearing, i.e. keeping the sieve free.
  • the clearing elements can one differentiates several types, which have a fundamentally different structure to have. For example, hydrodynamically effective airfoil in the The space between the rotor and the screen element is moved relative to the suspension, through which such pressure and suction phenomena occur, which increase the throughput favor.
  • Another option is to put on essentially spherical segment-shaped elevations, so-called "bumps", on one Basic rotor body or the placement of elevations, which a more or less have a pronounced wedge shape.
  • the different ones Broaching elements arranged so that the screen clearing effect in the different Clearing zones is increased in the course of the transport flow.
  • the Paper fiber suspension is relative immediately after it enters the pressure sorter thin and has a high content of fine and fillers. Hence the requirements the clearing of the screen less than in the later course. Less clearing effect is usually used for sorting quality, that is, the selectivity. More fibers get in the accepted substance. would, however, in this first zone too much of these fine and Fillers flow through the sieve, so they were missing as a lubricant and carrier material in the following sorting zones.
  • the sorting effect is thus achieved by the invention equalized in that in larger areas of the sorter an inexpensive Mixture of fibers and fines is present. This is important for the "rescue" of the Long fibers that are otherwise too easily permanently rejected, i.e. in the reject of the Pressure sorter would arrive.
  • the push-through tendency in the transport direction can also be increased become.
  • the boundary between the rejected and Permitted proportions of a sieve element increases with increasing clearance so shifted that portions lagging behind with weaker push through tendency remain, get into the passage with a stronger tendency.
  • the broaching elements which have a high push-through tendency, e.g. those with wedge-shaped elevations or a triangular contour, only in a small one Area of the strainer basket are used, i.e. where the achievable advantages are greater than the disadvantages. They are also particularly robust and call in turn only a small part at this particularly vulnerable point on the screen element Stress caused by alternating bending stresses. It may also be useful to do that to combine increasing clearance with decreasing push through tendency, e.g. if Too much dirt accumulation occurs in the downstream clearing zones.
  • the screen clearer can advantageously be modular. It then consists of several parts releasably connected to one another, each of which e.g. forms a clearing zone. So clearing zones can be meaningfully combined and tailored to the application, e.g. by changing the order of clearing zones. Worn parts can can be easily replaced.
  • FIG. 1 shows a pressure sorter according to the invention with a sieve element 2, here in the form of a cylindrical screen basket, which the interior of the Pressure sorter divides into an inlet space 3 and an accept material space 4.
  • a sieve element 2 here in the form of a cylindrical screen basket, which the interior of the Pressure sorter divides into an inlet space 3 and an accept material space 4.
  • Inlet 3 can the fiber suspension S via a suspension inlet 5 be fed.
  • the pressure sorter used here receives one Angular momentum that sets it in a circumferential motion.
  • a transport flow T through a vertical symbolizes downward arrow, created.
  • On the way of the transport flow T is a large part of the fiber suspension S as intended by the Sieve element 2 derived in the accept material room 4.
  • a known screen clearer 8 is used, which is relative to the screen element 2
  • the clearing elements used on the screen clearer 8 designed so that, seen in the direction of the transport flow T, several Form clearing zones 9, 10, 11 and 12, each of which has different clearing elements exhibit.
  • the screen clearer 8 of the embodiment shown here contains a total four different clearing zones, the first clearing zone 9 having spherical sections 13 which second clearing zone 10 with hydrodynamic flow profiles 14, the third clearing zone 11 with wedge-shaped elevations 15 and the last clearing zone 12 with a circumferential one Polygon 16 is provided.
  • the order shown here is true in many cases particularly advantageous, but in the form not the only way to the invention realize.
  • the number of clearing zones can also be varied. It is important that the clearing effect that the clearing elements exert from level to level Level is increased. Then there is a relatively high throughput through the pressure sorter possible because the increasing resistance on the way of the transport flow T at Convey the suspension through the sieve element with a correspondingly stronger one Effectiveness of the clearing elements can be balanced.
  • Fig. 2 shows a schematic representation of a clearing zone from above, in which Ball sections 13 are placed directly on a base body 8 '. It should be noted that these spherical sections are operated here at a lower peripheral speed are considered common because they are on the same rotor as the other clearing elements. By reducing the clearing effect again, they support the solution of the task.
  • FIG. 3 Another version is shown in FIG. 3 with wedge-shaped elevations 15, which also are attached to the base body 8 'without clearance.
  • 4 hydrodynamic Flow profiles 14 can be used, which are at a radial distance from the base body 8 'of the Sieb thriftrs 8 are attached.
  • Fig. 5 shows as Another variant is a so-called "lobed rotor", in which a rounded polygon 16 is used, which e.g. - as shown here - from two cylinder segments is formed, each having an ellipse section as the base.
  • the Transition point of adjacent cylinder segments on the outer contour is discontinuous.
  • the pressure sorter shown in Fig. 1 is a relatively complex embodiment of the submitted invention. It has four different clearing zones 9, 10, 11 and 12 on. It is not always necessary to go that far. 6 shows an example with only three different clearing zones 9, 10 and 11. Also one is in the direction the clearing effect of the transport flow T can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP00103209A 1999-03-17 2000-02-17 Tamis sous pression pour suspensions fibreuses et un rotor de nettoyage pour un tel tamis Expired - Lifetime EP1036879B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19911884A DE19911884A1 (de) 1999-03-17 1999-03-17 Drucksortierer zum Sieben einer Papierfaserstoffsuspension und Siebräumer für einen solchen
DE19911884 1999-03-17

Publications (2)

Publication Number Publication Date
EP1036879A1 true EP1036879A1 (fr) 2000-09-20
EP1036879B1 EP1036879B1 (fr) 2004-07-14

Family

ID=7901300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103209A Expired - Lifetime EP1036879B1 (fr) 1999-03-17 2000-02-17 Tamis sous pression pour suspensions fibreuses et un rotor de nettoyage pour un tel tamis

Country Status (5)

Country Link
US (1) US6311850B1 (fr)
EP (1) EP1036879B1 (fr)
AT (1) ATE271152T1 (fr)
CA (1) CA2301423C (fr)
DE (2) DE19911884A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084562A1 (fr) * 2010-12-22 2012-06-28 Voith Patent Gmbh Trieuse à pression

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3396456B2 (ja) * 2000-02-04 2003-04-14 三菱重工業株式会社 紙料精選装置
AU2001289921A1 (en) * 2000-09-26 2002-04-08 Fan Separator Gmbh Device for separating particulate solid materials from an aqueous turbid medium by sifting
AU2003221774A1 (en) * 2002-04-24 2003-11-10 Frey A. Frejborg A screen section, screen cylinder, screening device, and method of screening fibrous material
US20050045529A1 (en) * 2003-09-02 2005-03-03 Gl&V Management Hungary Kft Vortex inducing rotor for screening apparatus for papermaking pulp
DE102004031622B4 (de) * 2004-06-30 2006-06-14 Voith Paper Patent Gmbh Drucksortierer zum Sieben einer Faserstoffsuspension
DE102007041119A1 (de) 2007-08-30 2009-03-05 Fan Separator Gmbh Druckfilter mit Vibrationsantrieb
FI120913B (fi) * 2007-09-28 2010-04-30 Andritz Oy Laite massan lajittelemiseksi
DE102009007637A1 (de) * 2009-02-05 2010-08-12 Voith Patent Gmbh Verfahren zum Sortieren einer Faserstoffsuspension sowie Vorrichtung zu seiner Durchführung
FI125599B (en) 2010-11-12 2015-12-15 Valmet Technologies Inc Fiber sorter blade, pulp sorter and method for sorting pulp
US20120318721A1 (en) * 2011-06-20 2012-12-20 Gallagher Brian J Grooved screen used in a tramp material separator
JP6117683B2 (ja) * 2013-01-10 2017-04-19 相川鉄工株式会社 製紙用スクリーン装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2006311A1 (fr) * 1968-04-16 1969-12-26 Canadian Ingersoll Rand
EP0289020A2 (fr) * 1987-04-30 1988-11-02 A. Ahlstrom Corporation Procédé et dispositif pour le traitement d'une suspension de fibres
WO1993022494A1 (fr) * 1992-04-23 1993-11-11 A. Ahlstrom Corporation Appareil de traitement de suspensions fibreuses
EP0629738A1 (fr) * 1993-06-16 1994-12-21 E. + M. Lamort Société Anonyme dite: Rotor pour l'épuration hydrodynamique sous pression de pâte à papier, et appareil muni de ce rotor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363759A (en) * 1964-04-29 1968-01-16 Bird Machine Co Screening apparatus with rotary pulsing member
US3400820A (en) * 1965-03-30 1968-09-10 Bird Machine Co Screening apparatus with rotary pulsing member
US3726401A (en) * 1970-12-16 1973-04-10 Bird Machine Co Screening machine
DE3006482C2 (de) * 1980-02-21 1983-04-14 J.M. Voith Gmbh, 7920 Heidenheim Rotationssortierer
DE3240487C2 (de) * 1982-11-02 1986-03-06 Naučno-issledovatel'skij i proektno-konstruktorskij institut celljuloznogo mašinostroenija "NIICMAŠ", Petrozavodsk Drucksichter für Fasersuspensionen
FI67588C (fi) * 1983-01-26 1985-04-10 Ahlstroem Oy Silplaot
US4749474A (en) * 1986-08-27 1988-06-07 Ingersoll-Rand Company Screening apparatus
DE3925020A1 (de) * 1989-07-28 1991-01-31 Voith Gmbh J M Sortierer
US5096127A (en) * 1990-08-22 1992-03-17 Ingersoll-Rand Company Apparatus for pressurized screening of a fibrous material liquid suspension
FR2666598B1 (fr) * 1990-09-10 1994-05-27 Escher Wyss Gmbh Procede de separation, notamment de tri ou de fractionnement d'une suspension de pate a papier.
FI88414C (fi) * 1991-01-30 1993-05-10 Ahlstroem Oy Anordning foer behandling av fibersuspension
DE4432842C2 (de) 1994-09-15 1996-09-26 Voith Sulzer Stoffaufbereitung Verfahren zum Ausbringen unerwünschter Feststoffpartikel aus einer wässerigen Faserstoffsuspension sowie Vorrichtung zu seiner Ausführung
FI102980B1 (fi) * 1997-05-21 1999-03-31 Valmet Corp Siipisovitelma kuitumassan lajittelulaitetta varten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2006311A1 (fr) * 1968-04-16 1969-12-26 Canadian Ingersoll Rand
EP0289020A2 (fr) * 1987-04-30 1988-11-02 A. Ahlstrom Corporation Procédé et dispositif pour le traitement d'une suspension de fibres
WO1993022494A1 (fr) * 1992-04-23 1993-11-11 A. Ahlstrom Corporation Appareil de traitement de suspensions fibreuses
EP0629738A1 (fr) * 1993-06-16 1994-12-21 E. + M. Lamort Société Anonyme dite: Rotor pour l'épuration hydrodynamique sous pression de pâte à papier, et appareil muni de ce rotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084562A1 (fr) * 2010-12-22 2012-06-28 Voith Patent Gmbh Trieuse à pression

Also Published As

Publication number Publication date
US6311850B1 (en) 2001-11-06
CA2301423C (fr) 2006-07-11
CA2301423A1 (fr) 2000-09-17
ATE271152T1 (de) 2004-07-15
DE19911884A1 (de) 2000-09-21
EP1036879B1 (fr) 2004-07-14
DE50007034D1 (de) 2004-08-19

Similar Documents

Publication Publication Date Title
EP0034780B1 (fr) Dispositif de triage rotatif
DE1761600C3 (de) Vorrichtung zum Sichten von Faserstoffaufschwemmungen
DE4000248C2 (fr)
DE2518112C2 (de) Vorrichtung zur Behandlung von Papierfasern
EP1036879B1 (fr) Tamis sous pression pour suspensions fibreuses et un rotor de nettoyage pour un tel tamis
EP1215335B1 (fr) Tamis sous pression pour l'épuration de pâte à papier contenant des impuretés
DE3322578A1 (de) Sortiervorrichtung
EP2516733A1 (fr) Procédé et dispositif de tamisage pour le tamisage d'une suspension de matière fibreuse
WO2013083509A1 (fr) Dispositif de tamisage pour le tamisage d'une suspension fibreuse
DE3820366A1 (de) Vorrichtung zum aufteilen einer zellulosefaserbreisuspension
DE2611886C3 (de) Gerät zum Sortieren und Entstippen von Fasersuspensionen
WO2012084562A1 (fr) Trieuse à pression
EP0567726B1 (fr) Dispositif de tamisage
EP0146641A1 (fr) Tamis à trier pour suspensions de fibres de pâte
AT395325B (de) Vorrichtung zum auftrennen einer zellulosefaserbrei-suspension
AT15802U1 (de) Drucksortierer
EP1357222B1 (fr) Procédé de tammisage humide de suspensions fibreuses
DE19805448C2 (de) Verfahren und Vorrichtung zur Reinigung und Zuführung einer Papierstoffsuspension in den Stoffauflauf einer Papiermaschine
DE10065930B4 (de) Verfahren zur Herstellung von Sieben, die zur Nasssiebung von Papierfasersuspensionen verwendbar sind
DE4432842C2 (de) Verfahren zum Ausbringen unerwünschter Feststoffpartikel aus einer wässerigen Faserstoffsuspension sowie Vorrichtung zu seiner Ausführung
DE3015370C2 (de) Siebkorb für Sortierer der Papierindustrie
DE10116367A1 (de) Siebeinrichtung zur Nasssiebung von Papierfasersuspensionen
DE20304303U1 (de) Drucksortierer zum Sieben einer Papierfaserstoffsuspension und Siebräumer für einen solchen
DE60028188T2 (de) Siebvorrichtung
EP0807709A1 (fr) Dispositif pour l'épuration d'une suspension fibreuse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PAPER PATENT GMBH

17P Request for examination filed

Effective date: 20010320

AKX Designation fees paid

Free format text: AT DE FR GB IT

17Q First examination report despatched

Effective date: 20030729

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FRIEDRICH, HANS

Inventor name: VEH, GERHARD

Inventor name: BRUCKNER, JOSEF

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040714

REF Corresponds to:

Ref document number: 50007034

Country of ref document: DE

Date of ref document: 20040819

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050415

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120403

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120323

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120322

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120329

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20120213

Year of fee payment: 13

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 271152

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131031

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50007034

Country of ref document: DE

Effective date: 20130903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130903

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130228

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130217