EP1122358B2 - Trieuse pour la purification d'une suspension de fibres - Google Patents

Trieuse pour la purification d'une suspension de fibres Download PDF

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Publication number
EP1122358B2
EP1122358B2 EP01101559A EP01101559A EP1122358B2 EP 1122358 B2 EP1122358 B2 EP 1122358B2 EP 01101559 A EP01101559 A EP 01101559A EP 01101559 A EP01101559 A EP 01101559A EP 1122358 B2 EP1122358 B2 EP 1122358B2
Authority
EP
European Patent Office
Prior art keywords
rotor
screen
sorter
basket
accept
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01101559A
Other languages
German (de)
English (en)
Other versions
EP1122358A2 (fr
EP1122358A3 (fr
EP1122358B1 (fr
Inventor
Helmuth Dipl.Ing.Dr. Gabl
Axel Dipl.Ing. Pichler
Alexander Dipl.Ing. Gscheider
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.)
Andritz AG
Original Assignee
Andritz AG
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
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Application filed by Andritz AG filed Critical Andritz AG
Priority to AT01101559T priority Critical patent/ATE299965T1/de
Publication of EP1122358A2 publication Critical patent/EP1122358A2/fr
Publication of EP1122358A3 publication Critical patent/EP1122358A3/fr
Application granted granted Critical
Publication of EP1122358B1 publication Critical patent/EP1122358B1/fr
Publication of EP1122358B2 publication Critical patent/EP1122358B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 sorter for cleaning a pulp suspension, wherein in the inlet area an additional screen basket is provided for presorting.
  • Sorters are machines used in the paper industry for cleaning a stock suspension consisting of water, fibers and dirt particles.
  • a feed stream is passed through a sieve device, wherein the accept flow, consisting of water and fibers, flows through the sieve.
  • a partial stream, called the reject stream, consisting of water, fibers and contaminants, is generally withdrawn at the end opposite the feed stream.
  • the reject stream consisting of water, fibers and contaminants.
  • the sorter there is a separation of solid particles present in liquid.
  • the liquid is separated from the solid.
  • such a sorter is rotationally symmetrical and consists of a housing with a tangentially arranged inlet, a cylindrical screen basket, usually provided with holes or vertical slots and a rotating rotor.
  • the task of the rotor is to keep the sieve slots free, which is achieved by wings that rotate just short of the sieve surface.
  • the accept stream is collected in a so-called accept space, which is often conical, and drawn off radially at one point.
  • the reject flow is generally conducted at the opposite side of the feed basket of the screen basket in a generally annular Rejektraum and subtracted tangentially from this.
  • Such a sorter is eg from the US 4,268,381 known.
  • the disadvantage of these sorting machines is that the risk of clogging at low flow velocities occurs due to a relatively large rejection space.
  • the aim of the invention is therefore to provide an improvement in the flow conditions in the sorter, in order to achieve a reduction of the energy used with increased production and dirt separation.
  • the invention is therefore characterized in that arranged in the presorting in the inlet stream, rotating vanes are provided and the additional screen basket has the same diameter as the screen basket of the further sorting stage. This can avoid false currents and a flow of coarse particles directly into the fine particle area. Furthermore, the rotating abrasive blades of the rotor prevent the highly abrasive heavy parts from striking the surface of the screen and damaging them
  • An advantageous development of the invention is characterized in that the additional screen basket rotates with the rotor, wherein the additional screen basket can also be designed to be stationary.
  • An advantageous embodiment of the invention is characterized in that the accept space is configured double conical.
  • An advantageous development of the invention is characterized in that the sorter is designed as a double machine.
  • a favorable development of the invention is characterized in that the feed takes place axially through the rotor.
  • a favorable embodiment of the invention is characterized in that the drive-side rotor part in its height is equal to or greater than the on and flowed through, the drive side facing away from the rotor part.
  • a favorable embodiment of the invention is characterized in that the feed takes place centrally from the side.
  • An advantageous embodiment of the invention is characterized in that the sorter is arranged horizontally.
  • a favorable development of the invention is characterized in that several blades are provided distributed over the height and / or circumference of the rotor.
  • FIG. 1 an embodiment of the invention with an area for an integrated pre-sorting
  • Fig. 2 shows a further embodiment of the invention
  • Fig. 3 shows an alternative embodiment of the invention
  • 4 shows an embodiment of a twin machine
  • FIG. 5 shows a diagram of the dependence of the specific energy on the screen flow
  • FIG. 6 shows a diagram of the dirt point reduction for screen flow.
  • Fig. 1 now shows the upper part of a sorter 1, which is arranged vertically, with an integrated presorting.
  • the sorter 1 is fed via the inlet nozzle 2, the pulp suspension.
  • a presorting region 10 is provided in the upper region of the sorter 1, into which the suspension passes through a sieve 11.
  • the flow of pulp suspension in the pre-sorting is thus carried out from outside to inside.
  • a rotor 12 runs, which is connected to the rotor 4 via an extension 13.
  • the rotor can also run inside the screen.
  • the heavy parts leave the Vorsortier Complex through a nozzle 14.
  • the rotor 12 can in Vorsortier Scheme 10 both in the feed stream (as shown) or in the accept stream, which is then fed to a further fine sorting in the lower part of the sorter 1 run. Runs the rotor 12 in the feed stream, so the strongly abrasive acting heavy parts are held on the surface of the screen 11 by the rotating cleaning blades of the rotor 12 and damage them.
  • Fig. 2 shows a sorter 1, which is fed through a feed nozzle 2, a pulp suspension for cleaning.
  • an installation 3 is provided, which is shown here as a truncated cone.
  • the "tip" of the truncated cone points here in the direction of the rotor 4.
  • For optimal deflection of the flank angle ⁇ of the truncated cone is between 10 ° and 60 °.
  • the pulp suspension enters the space between the rotor 4 and the sieve 5 and is conveyed through the sieve into the acceptance space 6.
  • the housing of the accepting space is of biconical design, that is, the housing tapers approximately from the upper edge of the accepting outlet 7 conically towards the reject space, the angle of the accepting space being designed for a constant flow rate assuming uniform outflow through the sieve.
  • the rotor 4 of the sorter 1 is designed for a uniform Siebanströmung, which causes a low thickening behavior on the screen height. It has the shape of a parabola, so that the axial flow rate within the screen basket remains constant assuming uniform outflow through the screen. Alternatively, the shape of the rotor can also be approximated by a cone shape.
  • the reject space is configured such that flow velocities greater than 2.5 m / sec are present with or without additional introduction of stirring energy through the rotor. As a result, a blockage is virtually avoided.
  • Fig. 3 shows an analog arrangement of a sorter 1, wherein here the inlet nozzle 2 is arranged so that the suspension is fed parallel to the wall of the truncated cone 3.
  • Fig. 4 shows the execution of a top machine, as it is designed for high production rates.
  • the rotor becomes e.g. designed as a double parabolic rotor 4, 4 'or double bevel rotor.
  • the Rejektabzug 8, 8 'and the strainer 5, 5' is provided in duplicate.
  • the accept space 6, 6 ' is biconical, i. in turn, that the housing approximately tapers conically from the upper edge of the accept outlet to the reject space.
  • the stock suspension is in turn supplied via the supply pipe 2 and guided axially through the rotor in the illustrated embodiment.
  • the drive-side rotor part 4 in the height L1 is equal to or greater than the on and flowed through, the drive side remote rotor part 4 'with the height L2.
  • the suspension emerges in the central region through openings 9 from the rotor part 4 'through which it flows and is distributed here in both directions.
  • it passes through the strainer basket 5, 5 'into the accepting space 6, 6', which is likewise designed to be double-conical.
  • the reject flows both upwards and downwards and is discharged here from the machine in a reject space 8, 8 '.
  • the feed can also be made centrally from one side.
  • the accept outlet may be either double, i. above (7 ') or below (7) or simply be mounted centrally.
  • the sorting machine can also be performed in a lying form.
  • Fig. 5 shows the diagram of the energy demand on the Sieb thoroughlyströmung, in which case a curve for previous sorter and a curve for the sorter according to the invention is shown with a conical installation in the inlet space.

Landscapes

  • 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)
  • Centrifugal Separators (AREA)

Claims (8)

  1. Classeur pour l'épuration d'une suspension de pâte, avec un rotor (4, 4'), un coude d'amenée (2), une chambre d'acceptes (6,6') et une décharge de refus (8, 8'), où un panier de crible supplémentaire (11) est prévu pour effectuer un classement préliminaire, où un rotor (12) avec ailes rotatives qui est connecté au rotor (4, 4') est prévu dans l'aire de classement préliminaire (10) au courant d'amenée et le panier de crible supplémentaire (11) a le même diamètre que le panier de crible (5) de l'étage de classement supplémentaire, caractérisé en ce que le panier de crible supplémentaire (11) tourne ensemble avec le rotor (12) avec ailes rotatives.
  2. Dispositif selon la revendication 1, caractérisé en ce que la chambre d'acceptes (6) est étudiée en double cône.
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le classeur (1) est étudié en tant que machine double.
  4. Dispositif selon la revendication 3, caractérisé en ce que l'amenée a lieu axialement au travers du rotor (4).
  5. Dispositif selon la revendication 4, caractérisé en ce que la partie du rotor (4) se situant au côté d'entraînement est de hauteur égale ou plus importante par rapport à la partie du rotor (4') se situant de l'autre côté de l'entraînement, où la pâte coule et par lequel elle passe.
  6. Dispositif selon l'une des revendications 3 à 5, caractérisé en ce que deux décharges (7, 7') sont prévues pour les acceptes.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le classeur (1) est placé horizontalement.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le rotor (4, 4') a plusieurs ailes montées à des niveaux différents et/ou distribuées sur la circonférence.
EP01101559A 2000-02-03 2001-01-25 Trieuse pour la purification d'une suspension de fibres Expired - Lifetime EP1122358B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT01101559T ATE299965T1 (de) 2000-02-03 2001-01-25 Sortierer zur reinigung einer faserstoffsuspension

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT166002000 2000-02-03
AT0016600A AT408771B (de) 2000-02-03 2000-02-03 Sortierer zur reinigung einer faserstoffsuspension

Publications (4)

Publication Number Publication Date
EP1122358A2 EP1122358A2 (fr) 2001-08-08
EP1122358A3 EP1122358A3 (fr) 2001-11-21
EP1122358B1 EP1122358B1 (fr) 2005-07-20
EP1122358B2 true EP1122358B2 (fr) 2008-01-02

Family

ID=3653490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101559A Expired - Lifetime EP1122358B2 (fr) 2000-02-03 2001-01-25 Trieuse pour la purification d'une suspension de fibres

Country Status (8)

Country Link
EP (1) EP1122358B2 (fr)
CN (1) CN1180160C (fr)
AT (2) AT408771B (fr)
BR (1) BR0100352A (fr)
CA (1) CA2332679A1 (fr)
DE (1) DE50106745D1 (fr)
ES (1) ES2246260T5 (fr)
MX (1) MXPA01001293A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10115298A1 (de) * 2001-03-28 2002-10-17 Voith Paper Patent Gmbh Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension
AT413390B (de) 2003-03-27 2006-02-15 Andritz Ag Maschf Sortierer zur reinigung einer fasersuspension
AT413110B (de) * 2003-10-15 2005-11-15 Andritz Ag Maschf Sortierer
CN110787517B (zh) * 2019-11-28 2020-10-30 广东吉康环境系统科技有限公司 一种污泥干化预处理装置
KR102379138B1 (ko) * 2020-11-03 2022-03-25 이강훈 교반력을 이용한 커피음료 브루잉 추출 방법 및 장치
CN113648693B (zh) * 2021-07-14 2022-12-27 安徽金星钛白（集团）有限公司 偏钛酸贮存槽下料防堵塞用初级过滤器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053391A (en) * 1959-08-17 1962-09-11 Bird Machine Co Apparatus for screening
US4302327A (en) * 1980-03-17 1981-11-24 The Black Clawson Company Center flow screening apparatus
DE3703831A1 (de) * 1987-02-07 1988-09-08 Voith Gmbh J M Spuckstoffsortierer
SE464640B (sv) * 1988-06-16 1991-05-27 Kamyr Ab Apparat foer silning av en suspension av en fiberhaltig cellulosamassa
FI902968A7 (fi) * 1990-06-13 1991-12-14 Sunds Defibrator Jylha Oy Siktenhet foer sortering av massor, saerskilt pappersmassa.
DE4135854A1 (de) * 1991-10-31 1993-05-06 J.M. Voith Gmbh, 7920 Heidenheim, De Sortierer
FI93979C (fi) * 1993-08-20 1995-06-26 Tampella Oy Valmet Menetelmä ja painelajitin kuitumassan lajittelemiseksi
US5575395A (en) * 1994-07-15 1996-11-19 A. Ahlstrom Corporation Method and apparatus for screening fibrous suspensions
US5884774A (en) * 1996-03-11 1999-03-23 Aikawa Iron Works Co., Ltd. Papermaking screen
SE507481C2 (sv) * 1996-05-02 1998-06-15 Alfa Laval Ab Anordning för separering av föroreningar från fibermassasuspensioner
SE511786C2 (sv) * 1998-03-06 1999-11-22 Sunds Defibrator Ind Ab Silanordning med två silkammare för separering av fibersuspensioner

Also Published As

Publication number Publication date
CN1320741A (zh) 2001-11-07
ATA1662000A (de) 2001-07-15
EP1122358A2 (fr) 2001-08-08
CA2332679A1 (fr) 2001-08-03
DE50106745D1 (de) 2005-08-25
BR0100352A (pt) 2001-10-02
CN1180160C (zh) 2004-12-15
ATE299965T1 (de) 2005-08-15
EP1122358A3 (fr) 2001-11-21
EP1122358B1 (fr) 2005-07-20
ES2246260T3 (es) 2006-02-16
AT408771B (de) 2002-03-25
MXPA01001293A (es) 2005-08-16
ES2246260T5 (es) 2008-05-01

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