EP0093187B1 - Tambour de tamisage pour les appareils d'épuration des pâtes à papier - Google Patents

Tambour de tamisage pour les appareils d'épuration des pâtes à papier Download PDF

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Publication number
EP0093187B1
EP0093187B1 EP82103801A EP82103801A EP0093187B1 EP 0093187 B1 EP0093187 B1 EP 0093187B1 EP 82103801 A EP82103801 A EP 82103801A EP 82103801 A EP82103801 A EP 82103801A EP 0093187 B1 EP0093187 B1 EP 0093187B1
Authority
EP
European Patent Office
Prior art keywords
filter basket
cavities
grooves
wall
filter
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
Application number
EP82103801A
Other languages
German (de)
English (en)
Other versions
EP0093187A1 (fr
EP0093187B2 (fr
Inventor
Emil Holz
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 Finckh Fiber Systems GmbH and Co KG
Original Assignee
Hermann Finckh Maschinenfabrik GmbH and Co
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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8189017&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0093187(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hermann Finckh Maschinenfabrik GmbH and Co filed Critical Hermann Finckh Maschinenfabrik GmbH and Co
Priority to DE8282103801T priority Critical patent/DE3265205D1/de
Priority to EP82103801A priority patent/EP0093187B2/fr
Priority to AT82103801T priority patent/ATE14763T1/de
Priority to US06/488,672 priority patent/US4529519A/en
Priority to CA000426764A priority patent/CA1205044A/fr
Priority to JP58076320A priority patent/JPS58202007A/ja
Priority to FI831508A priority patent/FI74058B/fi
Publication of EP0093187A1 publication Critical patent/EP0093187A1/fr
Publication of EP0093187B1 publication Critical patent/EP0093187B1/fr
Publication of EP0093187B2 publication Critical patent/EP0093187B2/fr
Application granted granted Critical
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
    • D21D5/16—Cylinders and plates for screens

Definitions

  • the invention relates to a screen basket for sorters for sorting fiber suspensions, with an inflow and an outlet side and with sieve openings widening in the forward direction, which are slot-shaped on the inflow side.
  • Sieve baskets of the type in question can be cylindrical or conical and can also be provided with a base and / or a lid.
  • a strainer basket of the type mentioned at the beginning with slots running in the axial or circumferential direction is e.g. B. from US-A-3 581 903 of the applicant.
  • Sieve baskets of this type are produced from a sheet metal which is bent and closed to form a circular cylinder and into which the sieve openings have been incorporated in the flat state.
  • the measure to design the sieve openings in such a way that they widen in the forward direction is used because it has been shown that in connection with the cleaning blades or strips of the rotors of the sorters having such a sieve basket there is a risk of blockages which almost completely avoids sieve openings.
  • the recesses milled out of the screen basket wall for each individual screen opening weaken the screen basket in such a way that reinforcement rings are required in practice, which are attached at an axial distance from one another on the outside of the screen basket wall so that it can withstand the pressure difference mentioned when used in pressure sorters.
  • the known screen baskets of pressure sorters are not only more expensive, but the reinforcement rings cover a considerable part of the screen basket area, which is why the known screen baskets have to be relatively large.
  • the milled recesses must also be made with a much greater length than the sieve opening slots, which further increases the weakening of the screen basket wall.
  • the transverse spacing of the sieve opening slots from one another must be chosen to be relatively large, so that the webs remaining between the sieve openings give the sieve basket wall a reasonably sufficient rigidity, a circumstance which predetermines the maximum throughput of fiber suspension through a known sieve basket of the type in question Dimensions reduced.
  • the screen plates processed in the manner described cannot be bent into an absolutely round screen basket, because the ring zones not provided with milled recesses and sawn slots for attaching the reinforcement rings do not have the same deformation properties as the areas with screen openings in between.
  • the invention had for its object to provide a screen basket for sorters for sorting fiber suspensions and in particular for pressure sorters, which has widening in the forward direction and slot-shaped screen openings on the upstream side and whose wall has a greater strength for a given wall thickness even without reinforcement rings or the like than the known strainer baskets of the type described.
  • the screen basket wall is provided with recesses on the outlet side, each of which extends over a plurality of screen opening slots and which are arranged on all sides at such intervals that the screen basket wall has a network structure on the outlet side between the recesses.
  • the wells in question can be z. B. particularly easy to produce by milling if they are circular cylindrical.
  • the design according to the invention leads to sieve opening slits of different lengths, which is advantageous, among other things, because in this way a sieve basket is obtained, the stability of which is that of a one with drilled holes provided sieve basket comes close.
  • the screen basket wall can also be bent into an absolutely round screen basket without great difficulty if the depressions form a regular pattern and, in particular, have a cylindrical shape are, because then there are no preferred directions of the screen basket wall with regard to the bending stiffness.
  • a sieve basket of predetermined maximum throughput can be clogged so that the drive energy for the rotor can be reduced by up to 20%, and a further energy saving is made possible by the fact that the not provided with milled recesses Areas of the wall of the known sieve baskets the total sieve area can be reduced by up to approx. 23%:
  • FIGS 1 to 3 show a screen basket 10 for a pressure sorter, in which the fiber suspension to be sorted, the screen basket from the outside in, ie. H. Flow in the direction of arrow A in Figure 1.
  • the screen basket wall 12 has an upper and a lower ring area 14 and 16 without screen openings for mounting the screen basket in the pressure sorter.
  • the outside of the screen basket wall is provided with circumferential grooves 18 arranged at equal intervals from one another, while circular cylindrical recesses 20 have been milled out of the inside of the screen basket wall, the depth of which is so great that sieve opening slots 22 result in the overlap region of the circumferential grooves 18 and the recesses 20 .
  • the centers of the depressions 20, which have been denoted by “C” in FIG. 2 lie at the corners of an equilateral triangle, which was indicated by dash-dotted lines in FIG. 2 for three mutually adjacent depressions.
  • the non-perforated areas 24 of the screen basket wall 12 form a network structure between the depressions 20, which gives the screen basket wall 12 the required rigidity.
  • FIGS. 1 to 3 shows a sieve basket 10 'which also flows through from the outside inwards, with grooves 18' running in the axial direction, so that sieve opening slots 22 'also running in the axial direction. surrender.
  • the strainer basket 10 'shown in FIG. 5 as a third embodiment is designed for a flow from the inside to the outside, ie. H. provided in the direction of arrow B and it has circumferential grooves 18 "on the inside, while circular cylindrical depressions 20" lie on the outside of the screen basket.
  • the screen opening slots also run here in the circumferential direction and were designated 22 ".
  • grooves 18, 18 'and 18 do not necessarily have to run in the circumferential direction or in the direction of the axis of the strainer basket, for example it would easily be possible for the grooves 18' to unite with the vertical form an acute angle.
  • Such a strainer basket according to the invention is characterized by an even greater stability, since the weakening of the strainer basket wall due to the grooves 18 or 18 ′ or 18 ′′ present outside the depressions is eliminated.
  • the invention thus created a screen basket in which the sum of the clear openings of the screen basket wall and their stability are greater than in the known screen baskets with slot-like screen openings widening in the direction of passage (given values for the screen basket height and the screen basket diameter), which under is due to the fact that the screen basket is perforated everywhere outside its assembly areas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Filtering Materials (AREA)
  • Filtration Of Liquid (AREA)

Claims (13)

1. Tambour de tamisage pour épurateur pour l'épuration de suspensions fibreuses, comportant un côté entrée (15) et un côté sortie (13) et comportant des ouvertures de tamisage (22) qui s'élargissent dans le sens du passage et ont, côté entrée, la forme de fentes, caractérisé en ce que la paroi du tambour de tamisage (12) présente côté sortie des évidements (20, 20', 20", 203), dont chacun s'étend sur plusieurs fentes d'ouverture de tamisage (22, 22', 22", 223) et qui sont disposés de tous côtés à des distances l'un de l'autre telles que la paroi du tambour de tamisage (12) présente, côté sortie, entre les évidements (20, 20', 20", 203), une structure réticulaire.
2. Tambour de tamisage selon la revendication 1, caractérisé en ce que les évidements (20, 20', 20", 203) ont la forme d'un cylindre à base circulaire.
3. Tambour de tamisage selon la revendication 1 ou la revendication 2, caractérisé en ce que les évidements (20, 20', 20", 203) forment une distribution régulière dans toutes les directions.
4. Tambour de tamisage selon les revendications 2 et 3, caractérisé en ce que les centres (C) des évidements (20, 20', 20", 203) - sur la vue de la paroi (12) développée à plat du tambour de' tamisage - forment les sommets de triangles équilatéraux.
5. Tambour de tamisage selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'épaisseur de paroi résiduelle de la paroi (12) du tambour de tamisage, au fond des évidements (20, 20', 20", 203) est d'environ 1 mm, en particulier environ 0,8 à 1,2 mm.
6. Tambour de tamisage selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que la paroi (12) du tambour de tamisage présente, côté entrée, des rainures (18) qui courent parallèlement l'une à l'autre et s'étendent sur plusieurs évidements (20, 20', 20", 203).
7. Tambour de tamisage selon la revendication 6, caractérisé en ce que les rainures (18) courent dans la direction périphérique du tambour de tamisage (10) et forment respectivement une rainure annulaire fermée.
8. Tambour de tamisage selon la revendication 6, caractérisé en ce que les rainures (18) courent au moins approximativement dans la direction de l'axe du tambour de tamisage.
9. Tambour de tamisage selon la revendication 8, caractérisé en ce que les rainures (18) se terminent à une certaine distance des extrémités du tambour de tamisage (10).
10. Tambour de tamisage selon l'une ou plusieurs des revendications 6 à 9, caractérisé en ce que les rainures (18) sont disposées à égale distance l'une de l'autre.
11. Tambour de tamisage selon une ou plusieurs des revendications 6 à 9, caractérisé en ce que les rainures (18) présentent une profondeur d'environ 1 mm, en particulier d'environ 0,9 à 1,3 mm.
12. Tambour de tamisage selon les revendications 5 et 11, caractérisé,en ce que la profondeur des rainures (18) est légèrement supérieure à l'épaisseur de paroi résiduelle de la paroi du tambour de tamisage (12) au fond des évidements (20, 20', 20", 203).
13. Tambour de tamisage selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que les découpes prévues côté entrée de la paroi (12) du tambour de tamisage et formant les fentes (223) d'ouverture de tamisage se terminent à l'intérieur de la zone de l'évidement respectif (203) et sont en particulier découpées au laser ou par érosion.
EP82103801A 1982-05-04 1982-05-04 Tambour de tamisage pour les appareils d'épuration des pâtes à papier Expired - Lifetime EP0093187B2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE8282103801T DE3265205D1 (en) 1982-05-04 1982-05-04 Screen drum for a pulp stock screening apparatus
EP82103801A EP0093187B2 (fr) 1982-05-04 1982-05-04 Tambour de tamisage pour les appareils d'épuration des pâtes à papier
AT82103801T ATE14763T1 (de) 1982-05-04 1982-05-04 Siebkorb fuer sortierer zum sortieren von fasersuspensionen.
CA000426764A CA1205044A (fr) 1982-05-04 1983-04-26 Tamis separateur pour suspensions de fibres
US06/488,672 US4529519A (en) 1982-05-04 1983-04-26 Screen cage for separators for sorting fibre suspensions
JP58076320A JPS58202007A (ja) 1982-05-04 1983-05-02 繊維懸濁液分離用分離機のスクリ−ンケ−ジ
FI831508A FI74058B (fi) 1982-05-04 1983-05-03 Silkorg foer sorteringsanordning foer fibersuspensioner.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82103801A EP0093187B2 (fr) 1982-05-04 1982-05-04 Tambour de tamisage pour les appareils d'épuration des pâtes à papier

Publications (3)

Publication Number Publication Date
EP0093187A1 EP0093187A1 (fr) 1983-11-09
EP0093187B1 true EP0093187B1 (fr) 1985-08-07
EP0093187B2 EP0093187B2 (fr) 1990-02-28

Family

ID=8189017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103801A Expired - Lifetime EP0093187B2 (fr) 1982-05-04 1982-05-04 Tambour de tamisage pour les appareils d'épuration des pâtes à papier

Country Status (7)

Country Link
US (1) US4529519A (fr)
EP (1) EP0093187B2 (fr)
JP (1) JPS58202007A (fr)
AT (1) ATE14763T1 (fr)
CA (1) CA1205044A (fr)
DE (1) DE3265205D1 (fr)
FI (1) FI74058B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607457A1 (de) * 1986-03-07 1987-09-10 Voith Gmbh J M Sortiersieb
US4795560A (en) * 1987-04-16 1989-01-03 The Black Clawson Company Screen plates
US4901417A (en) * 1987-08-05 1990-02-20 The Black Clawson Company Method of finishing screen plates
JPS6443318A (en) * 1987-08-10 1989-02-15 Arai Tekkosho Kk Multipurpose cylindrical element for filtration or separation
DE3940334A1 (de) * 1989-12-06 1991-06-13 Finckh Maschf Sieb fuer drucksortierer fuer fasersuspensionen
US5513757A (en) * 1994-06-02 1996-05-07 Sulzer Papertec Mansfield Inc. Continuous cut slotted screen basket
SE505400C2 (sv) * 1995-11-08 1997-08-18 Capricell Ab Barriär för avvattning av fibersuspensioner
WO2003091497A1 (fr) * 2002-04-24 2003-11-06 Frejborg Frey A Partie de tamis, cylindre de tamis, dispositif de tamisage et procede de tamisage pour materiau fibreux
CN200954409Y (zh) * 2006-06-27 2007-10-03 香港理工大学 通过减少阻塞而具有更优性能的过滤器
DE102018007294A1 (de) * 2018-09-14 2020-03-19 Guntram Krettek Verfahren zum Fixieren eines Bleches und damit hergestellte Filtereinrichtung

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL48947C (fr) *
DE545967C (de) * 1932-03-08 Constantin Noetzel Laeuterboden
US874418A (en) * 1907-02-21 1907-12-24 Joseph H Mcevoy Straining-plug.
US1375222A (en) * 1918-01-16 1921-04-19 William F J Lutz Drain-fitting
FR30891E (fr) * 1925-08-19 1926-10-04 Perfectionnements aux filtres à liquide
US1743953A (en) * 1929-03-12 1930-01-14 John D Beatty Paper-screen-cleaning device
US1780882A (en) * 1929-07-18 1930-11-04 Martin F Kettler Well screen
FR845346A (fr) * 1938-08-10 1939-08-18 Delbag Deutsche Luftfilter Bau Filtre fin à humectation visqueuse
GB579562A (en) * 1940-12-26 1946-08-08 Cfcmug Improvements in filters
GB681379A (en) * 1949-12-08 1952-10-22 John Wardle Improvements in or relating to strainers for liquids
GB841207A (en) * 1956-01-18 1960-07-13 Muller Jacques Improvements in filters or sifting elements
US2998064A (en) * 1957-12-11 1961-08-29 Improved Machinery Inc Strainer construction
GB879759A (en) * 1959-05-05 1961-10-11 Ingersoll Rand Canada Outward flow pressure screen
US3250063A (en) * 1963-10-31 1966-05-10 M S A Res Corp Filter and clips for holding same in a frame
DE1905832U (de) * 1964-09-16 1964-12-03 Hermann Finckh G M B H Sichter fuer papierstoff-suspensionen.
US3390774A (en) * 1967-08-28 1968-07-02 Chevron Res Spin-on type filter with dual valve and dual filter media
DE1611145A1 (de) * 1967-12-11 1970-09-03 Roland Soelch Verfahren zur Herstellung von Spaltfilterkoerpern fuer Feinstfiltration
US4262744A (en) * 1979-04-19 1981-04-21 Certain-Teed Corporation Molded fittings and methods of manufacture
GB2051871B (en) * 1979-06-22 1983-03-09 Nat Res Dev Zinc/cadmium chloride electrolysis
JPS5637393A (en) * 1979-08-30 1981-04-11 Mitsubishi Heavy Ind Ltd Screen apparatus for paper stock
DE3113734A1 (de) * 1980-04-22 1982-02-04 British Sidac Ltd., Watford, Hertfordshire "rueckspuelbare filteriervorrichtung"
JPS574208A (en) * 1980-06-10 1982-01-09 Totoku Electric Co Ltd Filter
US4276159A (en) * 1980-06-19 1981-06-30 The Black Clawson Company Apparatus for screening paper fiber stock
SU921593A1 (ru) * 1980-09-15 1982-04-23 Государственный проектно-конструкторский и экспериментальный институт угольного машиностроения Фильтр
US4415613A (en) * 1981-08-24 1983-11-15 Jonas Medney Method for making strengthened porous pipe and resulting product

Also Published As

Publication number Publication date
US4529519A (en) 1985-07-16
CA1205044A (fr) 1986-05-27
EP0093187A1 (fr) 1983-11-09
ATE14763T1 (de) 1985-08-15
FI74058B (fi) 1987-08-31
EP0093187B2 (fr) 1990-02-28
JPS58202007A (ja) 1983-11-25
JPH0246716B2 (fr) 1990-10-17
FI831508A0 (fi) 1983-05-03
FI831508L (fi) 1983-11-05
DE3265205D1 (en) 1985-09-12

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