EP0275921B1 - Pale de nettoyage - Google Patents

Pale de nettoyage Download PDF

Info

Publication number
EP0275921B1
EP0275921B1 EP88100408A EP88100408A EP0275921B1 EP 0275921 B1 EP0275921 B1 EP 0275921B1 EP 88100408 A EP88100408 A EP 88100408A EP 88100408 A EP88100408 A EP 88100408A EP 0275921 B1 EP0275921 B1 EP 0275921B1
Authority
EP
European Patent Office
Prior art keywords
end height
maximum end
screening
vane
rotor
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
EP88100408A
Other languages
German (de)
English (en)
Other versions
EP0275921A2 (fr
EP0275921A3 (en
Inventor
Reimund Rienecker
Joachim Nittke
Lothar Pfalzer
Klaus Schmidt
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.)
JM Voith GmbH
Original Assignee
JM Voith 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 JM Voith GmbH filed Critical JM Voith GmbH
Priority to AT88100408T priority Critical patent/ATE56765T1/de
Publication of EP0275921A2 publication Critical patent/EP0275921A2/fr
Publication of EP0275921A3 publication Critical patent/EP0275921A3/de
Application granted granted Critical
Publication of EP0275921B1 publication Critical patent/EP0275921B1/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 sorting wing according to the preamble of claim 1.
  • a sorting wing has become known as the internal state of the art.
  • GB-A 254 068 describes sorters with a number of differently shaped sorting wings.
  • Figures 7 and 8 of that document are particularly relevant. Differences between the generic sorting wing and the wing according to FIG. 7 of the GB patent can be seen above all in the fact that the outer wing contour of the rear part of the wing according to FIG. 7 is composed of two basket arches. The outer contour of the front part of the wing according to FIG. 8 of that document is likewise not an arc, but rather a curve which has a kink. Therefore, none of the sorting wings according to the GB-PS fulfills the preamble of claim 1. For this reason alone, a sorting device with sorting wings of the old, previously known type would be unsuitable for modern sorting tasks which have to cope with a very high consistency of the suspension.
  • the invention has for its object to design a sorting wing according to the preamble of claim 1 such that the pulsations are reduced, the ease of manufacture and the good sorting efficiency should be maintained.
  • the sorting wing 1 comprises a rear part 2, the radial outer contour of which is an arc 4.
  • the rear part 2 has a maximum initial height h ', at the rear edge 12, and a maximum end height H.
  • the height information relates in each case to the distance between the relevant point of the outer contour and the outer surface 15 of the rotor.
  • the sorting wing 1 further comprises a front part 7, which lies in the direction of rotation in front of the rear part and begins at the point at which the maximum end height H of the rear part 2 is located.
  • the front part also has an arcuate radial outer contour, which is however concave.
  • the total length of the wing L is composed of the length L 1 of the rear part 2 and the length L 2 of the front part 7.
  • the length L 2 in the present case is 1.5 'H.
  • the radius of the front part 7 can be tapered, so that the contour of the front part 7 merges into the lateral surface 15 of the rotor - see FIG. 1.
  • the radial outer contour of the rear part 2 drops at the rear edge 12 in the radial direction onto the lateral surface 15 of the rotor.
  • the falling distance h ' is 0.2 times H.
  • the concave circular arc 8 likewise does not open into the rotor lateral surface 15 in this exemplary embodiment. Rather, there is also a steep drop in the radial direction. The extent h of this drop amounts to somewhat less than 0.2 of the maximum height H '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Gyroscopes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Centrifugal Separators (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Laminated Bodies (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Rotary Pumps (AREA)

Claims (3)

1. Ailette de classage (1) pour un rotor avec corps de base du type à tambour d'un dispositif de classement qui sont réparties sur la périphérie et qui sont disposées sur le corps de base d'une manière décalée sur toute la longueur tandis que le contour extérieur radial des ailette de classage (1) augmente continuellement jusqu'à une hauteur maximale finale (H) sur la surface de l'enveloppe du rotor (15) ou descend à 1/10e de la hauteur maximale finale (H) de telle manière qu'une partie avant (7) est constituée dont le tracé de la périphérie L 2 correspond à 1 jusqu'à 1, 5 fois la hauteur maximale finale (H), et qu'une partie arrière (2) dont la hauteur maximale de début (h') sur l'arête arrière (12) atteint 0, 2 fois la hauteur maximale finale (H) et dont la longueur (L 1) s'élève à 3 jusqu'à 8 fois, de préférence, de 3 à 7 fois la hauteur maximale finale (H), caractérisées par le fait que la tangente tracée sur le contour extérieur des ailettes de classage (1) au point de la hauteur maximale finale (H) est tirée verticalement par rapport au rayon passant par ce point,
2. Ailette de classage suivant la revendication 1, caractérisées par le fait que le rapport de division vis-à-vis du diamètre du rotor t/D varie entre 1:5 et 1:8.
3. Ailette de classage suivant une des revendications 1 ou 2, caractérisées par le fait que le diamètre (D) du rotor atteint 10 à 20 fois la longueur totale de l'ailette de classage (1).
EP88100408A 1987-01-22 1988-01-14 Pale de nettoyage Expired - Lifetime EP0275921B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100408T ATE56765T1 (de) 1987-01-22 1988-01-14 Sortierfluegel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873701669 DE3701669A1 (de) 1987-01-22 1987-01-22 Sortierfluegel
DE3701669 1987-01-22

Publications (3)

Publication Number Publication Date
EP0275921A2 EP0275921A2 (fr) 1988-07-27
EP0275921A3 EP0275921A3 (en) 1989-02-22
EP0275921B1 true EP0275921B1 (fr) 1990-09-19

Family

ID=6319230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100408A Expired - Lifetime EP0275921B1 (fr) 1987-01-22 1988-01-14 Pale de nettoyage

Country Status (4)

Country Link
EP (1) EP0275921B1 (fr)
AT (1) ATE56765T1 (fr)
DE (2) DE3701669A1 (fr)
ES (1) ES2018303B3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464473B (sv) * 1988-11-17 1991-04-29 Sunds Defibrator Ind Ab Silanordning
JP3542594B2 (ja) * 1992-06-20 2004-07-14 ボイト フィンク ファイバー システムズ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディト ゲゼルシャフト 繊維懸濁液用加圧分離装置
FR2706495B1 (fr) * 1993-06-16 1995-09-08 Lamort E & M Rotor pour l'épuration hydrodynamique sous pression de pâte à papier, et appareil muni de ce rotor.
US5566833A (en) * 1995-01-25 1996-10-22 Hermannfinckh Maschinenfabrik Gmbh & Co. Pressure sorter for fiber suspensions as well as a process for the preparation of fiber suspensions
DE102010063891A1 (de) 2010-12-22 2012-06-28 Voith Patent Gmbh Drucksortierer
DE102011079230A1 (de) 2011-07-15 2013-01-17 Voith Patent Gmbh Drucksortierer
DE102011089108A1 (de) 2011-12-20 2013-06-20 Voith Patent Gmbh Rotorflügel
DE102012220330A1 (de) 2012-11-08 2014-05-08 Voith Patent Gmbh Drucksortierer
DE102013216433A1 (de) 2013-08-20 2015-03-12 Voith Patent Gmbh Drucksortierer
DE202015009033U1 (de) 2015-06-03 2016-07-17 Voith Patent Gmbh Drucksortierer
DE102019107693A1 (de) 2019-03-26 2020-10-01 Voith Patent Gmbh Drucksortierer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB254068A (en) * 1925-05-23 1926-07-01 Samuel Milne Improvements in or relating to mechanical screens, strainers and the like
DE2712715B2 (de) * 1977-03-23 1979-05-23 Hermann Finckh Maschinenfabrik Gmbh & Co, 7417 Pfullingen Sortierer für Fasersuspensionen
DE2712749A1 (de) * 1977-03-23 1979-02-08 Finckh Maschf Sortierer zum sichten von fasersuspensionen
DE3006482C2 (de) * 1980-02-21 1983-04-14 J.M. Voith Gmbh, 7920 Heidenheim Rotationssortierer

Also Published As

Publication number Publication date
EP0275921A2 (fr) 1988-07-27
ES2018303B3 (es) 1991-04-01
DE3701669C2 (fr) 1989-12-14
DE3701669A1 (de) 1988-08-04
EP0275921A3 (en) 1989-02-22
ATE56765T1 (de) 1990-10-15
DE3860609D1 (de) 1990-10-25

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