EP1124003A2 - Sortierer zur Reinigung einer Faserstoffsuspension - Google Patents
Sortierer zur Reinigung einer Faserstoffsuspension Download PDFInfo
- Publication number
- EP1124003A2 EP1124003A2 EP01101939A EP01101939A EP1124003A2 EP 1124003 A2 EP1124003 A2 EP 1124003A2 EP 01101939 A EP01101939 A EP 01101939A EP 01101939 A EP01101939 A EP 01101939A EP 1124003 A2 EP1124003 A2 EP 1124003A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- installation
- cone
- sorter
- inlet
- 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 sorter for cleaning a Fibrous suspension.
- Sorters are machines used for cleaning in the paper industry a stock suspension consisting of water, fibrous materials and Dirt particles exist. In this case, an inflow flow over a Screening device performed, the acceptance stream consisting of water and fibers flowing through the screen. A partial stream, called Reject flow, consisting of water, fibers and contaminants, is in the generally at the end opposite the feed stream deducted.
- Such a sorter is generally rotationally symmetrical executed and consists of a housing with a tangential arranged inlet, a cylindrical screen basket, usually with holes or vertical slots and a rotating rotor. The task of the rotor is to keep the screen slots free is achieved by blades rotating just on the surface of the screen.
- the Acceptance flows in a so-called acceptance room, which is often conical is carried out, collected and deducted radially at one point.
- the Reject flow is generally on the opposite side of the inlet Side of the screen basket in a mostly ring-shaped reject space and subtracted from this tangentially.
- Such a sorter is e.g. from the US 4,268,381 known.
- the disadvantage of these sorting machines is in the fact that a relatively large reject space creates the danger of clogging occurs at low flow rates.
- the aim of the invention is therefore to improve the To create flow conditions in the sorter to create a Reduction of the energy used with increased production and To achieve dirt separation.
- the invention is therefore characterized in that in the inlet area A stationary installation between the pipe socket and the end of the rotor is provided, which can be rotationally symmetrical. Thereby becomes a significant improvement in flow conditions and in a further consequence is a reduction in the energy used.
- An advantageous development of the invention is characterized in that that the installation of a cone, a truncated cone, hemisphere, spherical segment, Spherical layer, paraboloid or double-shell hyperboloid.
- a favorable embodiment of the invention is characterized in that that when installed as a cone or truncated cone, the cone angle ⁇ is between 10 ° and 60 °.
- a favorable further development of the invention is characterized in that that the axis of the inlet nozzle is arranged parallel to the cone jacket is. This allows the flow to be guided better and the Energy losses can be reduced further.
- a favorable alternative embodiment of the invention is thereby characterized in that the installation is a spiral body, the Slope of the spiral can be chosen such that the Flow velocity in the inlet area over the entire Sorting basket width is constant.
- An advantageous development of the invention is characterized in that that the installation is arranged centrally.
- An advantageous embodiment of the invention is characterized in that that the acceptance room is double conical.
- An advantageous development of the invention is characterized in that that the sorter is designed as a double machine.
- a favorable further development of the invention is characterized in that that the inlet takes place axially through the rotor.
- a favorable embodiment of the invention is characterized in that that the drive-side rotor part in height equal to or greater than that flowed in and flowed through, the drive side facing away rotor part.
- a favorable embodiment of the invention is characterized in that that the inlet is in the middle from the side.
- An advantageous development of the invention is characterized in that that the acceptance outlet is provided twice.
- An advantageous embodiment of the invention is characterized in that that the sorter is arranged horizontally.
- a favorable further development of the invention is characterized in that that for presorting a screen basket rotating with the rotor in Inflow area is provided, with rotating also in the pre-sorting area Wings can be provided.
- a favorable further development of the invention is characterized in that that several blades are distributed over the height and / or circumference of the rotor are provided.
- FIG. 2 an alternative embodiment of the invention
- Fig. 3 shows an embodiment of a Double machine
- Fig. 4 shows a further variant of the invention
- Fig. 5 a 3-D representation of a variant of the invention
- Fig. 6 shows the area for a integrated presorting
- Fig. 7 is a diagram of the dependence of specific energy for sieve flow
- Fig. 8 is a diagram of the Dirt point reduction for sieve flow represents.
- Fig. 1 shows a sorter 1, the one through an inlet port 2 Fibrous suspension is fed for cleaning.
- Inlet 3 In the area of Inlet 3 is provided, which is shown here as a truncated cone is.
- the "tip" of the truncated cone points in the direction of the rotor 4.
- the Installation 3 can be designed both as a hollow body and as a solid body his.
- the flank angle is ⁇ des Truncated cone between 10 ° and 60 °.
- the fiber suspension enters the Space between rotor 4 and sieve 5 and is through the sieve promoted to acceptance room 6.
- the housing of the acceptance room is double-conical, i.e. the housing tapers approximately from the The upper edge of the acceptance outlet 7 is conical towards the reject space, whereby the angle of the acceptance room for a constant flow rate assuming a uniform flow through the sieve is laid out.
- the rotor 4 of the sorter 1 is for a uniform flow against the sieve, which causes a low thickening behavior above the screen height, designed. It has the shape of a parabola, so that the axial Flow velocity within the strainer basket when assumed uniform outflow through the sieve remains constant. Alternatively the shape of the rotor can also be approximated using a cone shape.
- the reject space designed such that flow velocities greater than 2.5 m / sec with or without additional input of stirring energy by the rotor available. This practically prevents constipation.
- Fig. 2 shows an analog arrangement of a sorter 1, here the Inlet nozzle 2 is arranged so that the suspension parallel to Shell of the truncated cone 3 is supplied. This allows the Energy loss that is otherwise present when the flow is diverted, be avoided.
- Fig. 3 shows the execution of a top machine, as for high Production performance is carried out.
- the rotor is e.g. as Double parabolic rotor 4, 4 'or double cone rotor.
- the Reject deduction 8, 8 'and the screen basket 5, 5' is in duplicate intended.
- the acceptance room 6, 6 ' is double-conical, i.e. again that the housing is approx. from the upper edge of the Acceptance outlets 7, 7 'tapered towards the reject space.
- the stock suspension is here again supplied via the supply nozzle 2 and in the embodiment shown axially guided by the rotor.
- the drive-side rotor part 4 in height L1 equal to or greater than the inflow and through flow, the drive side facing rotor part 4 'with the height L2.
- the suspension occurs in the middle Area through openings 9 from the flowed through rotor part 4 'and is distributed here in both directions. It occurs like a simple one Sorter through the sieve basket 5, 5 'into the acceptance room 6, 6', the is also double conical here.
- the reject flows both up and down and is here in a reject space 8, 8 ' removed from the machine.
- the Inlet also take place centrally from one side.
- the accept outlet can either twice, i.e. above (7 ') or below (7) or simply in the middle to be appropriate.
- the sorting machine can also be in a lying position be carried out.
- Fig. 4 shows a variant of the invention, a vertical installation standing, around 270 ° rotating sheet 3 'is provided.
- This Sheet 3 ' uses its spiral shape to direct the flow of material from the inlet 2 coming evenly into the strainer basket 5.
- this type of installation 3 ' shown in supervision. It can be seen that the sheet 3 'at Point 16 begins and then spirals around the center (the axis) runs up to point 17.
- the space 15 (shown hatched) between Sheet 3 'and the outer wall of the sorter can remain free.
- Essential is that the flow cross-section decreases continuously and thus a largely uniform flow rate is given is adapted to the inflow of the suspension into the screen basket 5 is.
- FIG. 5 shows the 3-D representation of a further variant of the invention.
- the Installation 3 is attached to the lid, the surface spiraling in Direction of the strainer runs.
- the fiber suspension is from Inlet 2 forth on the surface facing the screen basket directly into the Screen basket steered, here also the outflow is taken into account that the flow rate is practically constant. Thereby energy losses can be minimized.
- FIG. 6 now shows the upper part of a sorter 1 with an integrated one Pre-sorting.
- the sorter 1 via the inlet nozzle 2 Fibrous suspension fed.
- a Heavy part separation is in the upper area of the A sorting area 10 is provided in the sorter 1, into which the suspension passes through a sieve 11. This allows specifically heavy parts and large-scale impurities that come from dirty or high soiled fibers result, be removed well.
- a rotor 12 runs along with the rotor 4 via a Extension 13 is connected. The heavy parts leave the pre-sorting area through a nozzle 14.
- the rotor 12 can in the pre-sorting area 10 both in the feed stream (as shown) or in the acceptance stream, then another fine sorting in the lower area of the Sorter 1 is fed, run. If the rotor 12 is running in the feed stream, see above are the strong by the rotating cleaning blades of the rotor 12 abrasive heavy parts are held on the surface of the Open sieve 11 and damage it.
- the specifically heavy parts are centrifuged outwards.
- a longer service life of the screen baskets in the Pre-sorting area achieved, on the other hand, by means of the targeted barrier Pre-sorting basket sustainable storage of heavy parts in the centrifugal re-sorting area reached.
- the separate discharge of rough and Smaller impurities lead to increased performance (throughput and increased effectiveness) compared to conventional sorting machines.
- this variant can also be used with a Double cone rotor can be executed.
- Fig. 7 shows the diagram of the energy requirement over the Sieve flow, here a curve for previous sorters and a Curve for the sorter according to the invention with a tapered installation is shown in the inlet area.
- Fig. 8 is the dirt spot reduction over the sieve flow shown. It can be seen here that through a conical installation in Inlet space also the dirt point reduction can be increased significantly could, while lowering the specific energy requirement.
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
Claims (18)
- Sortierer zur Reinigung einer Faserstoffsuspension, dadurch gekennzeichnet, daß im Zulaufbereich zwischen Rohrstutzen (2) und dem freien Ende des Rotors (4) ein stationärer Einbau (3, 3', 3") vorgesehen ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Einbau (3) rotationssymetrisch ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Einbau (3) ein Kegel, Kegelstumpf, Halbkugel, Kugelsegment, Kugelschicht, Paraboloid oder zweischaliges Hyperboloid ist.
- Vorrichtung nach Anspruch 2, mit einem Einbau als Kegel oder Kegelstumpf, dadurch gekennzeichnet, daß der Kegelwinkel α zwischen 10° und 60° beträgt.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Achse des Zulaufstutzens (2) parallel zum Kegelmantel angeordnet ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Einbau (3', 3") ein spiralförmiger Körper ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Steigung der Spirale derart gewählt wird, daß die Strömungsgeschwindigkeit im Zulaufbereich über der gesamten Sortierkorbbreite konstant ist.
- Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Einbau (3, 3', 3") zentrisch angeordnet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Akzeptraum (6, 6') doppelt konisch ausgestaltet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Sortierer (1) als Doppelmaschine ausgebildet ist.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Zulauf axial durch den Rotor (4) erfolgt.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der antriebsseitige Rotorteil (4) in seiner Höhe gleich oder größer als der an- und durchströmte, der Antriebsseite abgewandte Rotorteil (4') ist.
- Vorrichtung nach Anspruch 12, dadurch gekennezeichnet, daß der Zulauf mittig von der Seite erfolgt.
- Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß der Akzeptauslaß (7, 7') zweifach vorgesehen ist.
- Vorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß der Sortierer (1) liegend angeordnet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß zur Vorsortierung ein mit dem Rotor (12) mitdrehender Siebkorb (11) im Zulaufbereich vorgesehen ist.
- Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß im Vorsortierbereich (10) rotorierende Flügel vorgesehen sind.
- Vorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß am Rotor (4, 4') mehrere Flügel über Höhe und/oder Umfang verteilt vorgesehen sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT01101939T ATE295446T1 (de) | 2000-02-03 | 2001-01-29 | Sortierer zur reinigung einer faserstoffsuspension |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1702000 | 2000-02-03 | ||
AT0017000A AT408772B (de) | 2000-02-03 | 2000-02-03 | Sortierer zur reinigung einer faserstoffsuspension |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1124003A2 true EP1124003A2 (de) | 2001-08-16 |
EP1124003A3 EP1124003A3 (de) | 2001-11-21 |
EP1124003B1 EP1124003B1 (de) | 2005-05-11 |
Family
ID=3655604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01101939A Expired - Lifetime EP1124003B1 (de) | 2000-02-03 | 2001-01-29 | Sortierer zur Reinigung einer Faserstoffsuspension |
Country Status (9)
Country | Link |
---|---|
US (1) | US6631809B2 (de) |
EP (1) | EP1124003B1 (de) |
CN (1) | CN1180159C (de) |
AT (2) | AT408772B (de) |
BR (1) | BR0100354A (de) |
CA (1) | CA2333800A1 (de) |
DE (1) | DE50106153D1 (de) |
ES (1) | ES2242662T3 (de) |
MX (1) | MXPA01001294A (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10233364C1 (de) * | 2002-07-23 | 2003-12-24 | Voith Paper Patent Gmbh | Drucksortierer zum Sieben einer Faserstoffsuspension |
EP1462567A1 (de) | 2003-03-27 | 2004-09-29 | Andritz AG | Sortierer zur Reinigung einer Fasersuspension |
WO2013010755A1 (de) * | 2011-07-15 | 2013-01-24 | Voith Patent Gmbh | Drucksortierer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2444486C (en) * | 2001-04-16 | 2013-04-02 | J & L Fiber Services, Inc. | Screen cylinder and method |
JP2005171449A (ja) * | 2003-12-15 | 2005-06-30 | Aikawa Iron Works Co Ltd | 製紙用スクリ−ン装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3053391A (en) * | 1959-08-17 | 1962-09-11 | Bird Machine Co | Apparatus for screening |
EP0541979A1 (de) * | 1991-10-31 | 1993-05-19 | J.M. Voith GmbH | Sortierer |
EP0795641A1 (de) * | 1996-03-11 | 1997-09-17 | Aikawa Iron Works Co., Ltd. | Sieb für Papierfaserstoff |
WO1997041296A1 (en) * | 1996-05-02 | 1997-11-06 | Alfa Laval Ab | Device for separating contaminants from fibre pulp suspensions |
WO1999045193A1 (en) * | 1998-03-06 | 1999-09-10 | Valmet Fibertech Aktiebolag | Screen device comprising two screen chambers for separating fibre suspensions |
EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU606635A1 (ru) * | 1976-02-11 | 1978-05-15 | Государственный проектно-конструкторский институт "Гипромашуглеобогащение" | Грохот |
US4268381A (en) * | 1979-05-03 | 1981-05-19 | Uniweld Inc. | Rotary pulp screening device of the vertical pressure type |
CA1238604A (en) * | 1983-12-12 | 1988-06-28 | Anthony W. Hooper | Rotary pulp screen of the vertical pressure type having pulp stock feed at different axial positions on the screen |
US5061370A (en) * | 1990-03-20 | 1991-10-29 | Quebec And Ontario Paper Company Ltd. | Screening device for slurries with improved rotor and hub design |
FI91648C (fi) * | 1993-01-11 | 1994-07-25 | Tampella Oy Valmet | Sovitelma painelajittimessa epäpuhtauksien erottamiseksi siihen syötettävästä kuitumassasta |
-
2000
- 2000-02-03 AT AT0017000A patent/AT408772B/de not_active IP Right Cessation
-
2001
- 2001-01-29 DE DE50106153T patent/DE50106153D1/de not_active Expired - Lifetime
- 2001-01-29 EP EP01101939A patent/EP1124003B1/de not_active Expired - Lifetime
- 2001-01-29 ES ES01101939T patent/ES2242662T3/es not_active Expired - Lifetime
- 2001-01-29 AT AT01101939T patent/ATE295446T1/de not_active IP Right Cessation
- 2001-01-31 CA CA002333800A patent/CA2333800A1/en not_active Abandoned
- 2001-02-02 MX MXPA01001294A patent/MXPA01001294A/es active IP Right Grant
- 2001-02-02 CN CNB011119357A patent/CN1180159C/zh not_active Expired - Fee Related
- 2001-02-02 US US09/776,258 patent/US6631809B2/en not_active Expired - Fee Related
- 2001-02-05 BR BR0100354-2A patent/BR0100354A/pt active Search and Examination
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3053391A (en) * | 1959-08-17 | 1962-09-11 | Bird Machine Co | Apparatus for screening |
EP0541979A1 (de) * | 1991-10-31 | 1993-05-19 | J.M. Voith GmbH | Sortierer |
EP0955406A2 (de) * | 1994-07-15 | 1999-11-10 | Ahlstrom Machinery Corporation | Verfahren und Vorrichtung zum Sortieren von faserstoffhaltiger Suspension |
EP0795641A1 (de) * | 1996-03-11 | 1997-09-17 | Aikawa Iron Works Co., Ltd. | Sieb für Papierfaserstoff |
WO1997041296A1 (en) * | 1996-05-02 | 1997-11-06 | Alfa Laval Ab | Device for separating contaminants from fibre pulp suspensions |
WO1999045193A1 (en) * | 1998-03-06 | 1999-09-10 | Valmet Fibertech Aktiebolag | Screen device comprising two screen chambers for separating fibre suspensions |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10233364C1 (de) * | 2002-07-23 | 2003-12-24 | Voith Paper Patent Gmbh | Drucksortierer zum Sieben einer Faserstoffsuspension |
EP1462567A1 (de) | 2003-03-27 | 2004-09-29 | Andritz AG | Sortierer zur Reinigung einer Fasersuspension |
WO2013010755A1 (de) * | 2011-07-15 | 2013-01-24 | Voith Patent Gmbh | Drucksortierer |
CN103687991A (zh) * | 2011-07-15 | 2014-03-26 | 沃依特专利有限责任公司 | 压力筛浆机 |
CN103687991B (zh) * | 2011-07-15 | 2016-08-17 | 沃依特专利有限责任公司 | 压力筛浆机 |
Also Published As
Publication number | Publication date |
---|---|
ATA1702000A (de) | 2001-07-15 |
CN1180159C (zh) | 2004-12-15 |
AT408772B (de) | 2002-03-25 |
ATE295446T1 (de) | 2005-05-15 |
CN1314515A (zh) | 2001-09-26 |
MXPA01001294A (es) | 2005-08-16 |
CA2333800A1 (en) | 2001-08-03 |
ES2242662T3 (es) | 2005-11-16 |
US6631809B2 (en) | 2003-10-14 |
BR0100354A (pt) | 2001-10-02 |
DE50106153D1 (de) | 2005-06-16 |
EP1124003B1 (de) | 2005-05-11 |
EP1124003A3 (de) | 2001-11-21 |
US20010022284A1 (en) | 2001-09-20 |
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