EP0696662A1 - Siebtrommel mit einem Rotor - Google Patents

Siebtrommel mit einem Rotor Download PDF

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Publication number
EP0696662A1
EP0696662A1 EP95401832A EP95401832A EP0696662A1 EP 0696662 A1 EP0696662 A1 EP 0696662A1 EP 95401832 A EP95401832 A EP 95401832A EP 95401832 A EP95401832 A EP 95401832A EP 0696662 A1 EP0696662 A1 EP 0696662A1
Authority
EP
European Patent Office
Prior art keywords
rotor
cylindrical
screen according
lobe
protrusions
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
EP95401832A
Other languages
English (en)
French (fr)
Other versions
EP0696662B1 (de
Inventor
Jean-Pierre Lamort
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.)
Kadant Lamort SAS
Original Assignee
E&M Lamort Fils SA
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 E&M Lamort Fils SA filed Critical E&M Lamort Fils SA
Publication of EP0696662A1 publication Critical patent/EP0696662A1/de
Application granted granted Critical
Publication of EP0696662B1 publication Critical patent/EP0696662B1/de
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 present invention relates to cylindrical sieves provided with an internal rotor and more particularly to sieves used in the pulp industry.
  • These means can be fins (often called “foils”), protrusions arranged on the surface of a cylinder or even extra thicknesses formed on the surface of a cylinder.
  • the present invention relates to this type of rotor, but it differs completely from known rotors in that the rotor is no longer a cylinder but consists of one or more portions of cylindrical surface which, when developed in a plane are right triangles, both sides of which perpendiculars correspond respectively to a generatrix and to the base of the cylinder and whose hypotenuse is oblique.
  • These cylindrico-triangular surfaces can be provided along their oblique side with protuberances which can be profiled.
  • FIG. 1 represents four examples (1a, 1b, 1c, 1d) of known rotors.
  • 1a there is shown a cylindrical rotor which carries four fins: when these fins travel along the internal surface of the screen (not shown), they cause a slight overpressure at the front and a slight depression at the rear. This results in a pressure beat which has the effect of detaching the fibers which are plated across the orifices (holes or slots) of the screen and this as well when the screen is in centrifugal operation as centripetal.
  • 1b and 1c a cylindrical rotor is shown, the surface of which is provided with protuberances: these protuberances produce turbulence and small variations in pressure.
  • 1d there is shown a rotor consisting of two offset half-cylinders, which causes a sudden increase in pressure followed by a gradual decrease.
  • the rotor 1 is not constituted by a regular cylindrical surface, the developed of which would be a rectangle but is constituted by a portion of cylindrical surface 2.
  • Figure 5 is a developed view of a rotor having only a single portion of cylindrical surface.
  • each portion of cylindrical surface (2 in Figure 5; 2a, 2b, 2c in Figure 4) is, in developing a right triangle whose base 3 corresponds to the base of the cylinder and side 4 corresponds to the height, or alternatively to a generator of the cylinder.
  • the sides 3 and 4 are perpendicular and the side 5, oblique, constitutes the hypotenuse of the right triangle.
  • each portion of the cylindrico-triangular surface will be designated below by the term "lobe".
  • the rotor of Figures 2 to 4 is therefore three lobes; while that of Figure 5 is a lobe.
  • the invention is not limited to the examples shown: there must be at least one lobe, but there can be two, three, four or more.
  • protrusions similar to those illustrated in FIG. 1b can be placed on the wall of the lobes.
  • these protrusions 6 are arranged along the oblique side 5 of each lobe 2.
  • these protuberances have the shape shown in FIG. 6, that is to say that their section decreases regularly from their front face (relative to the direction of rotation of the rotor) to their rear face.
  • the lobes are cut from a thin sheet and to reinforce them, there is inside each lobe a reinforcement 7, constituted by a curved sheet which is connected at its base to a disc 8 secured to a sleeve. 9 threaded on a motor shaft (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Centrifugal Separators (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Disintegrating Or Milling (AREA)
  • Soil Working Implements (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Toys (AREA)
  • Catching Or Destruction (AREA)
EP95401832A 1994-08-10 1995-08-04 Siebtrommel mit einem Rotor Expired - Lifetime EP0696662B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409886 1994-08-10
FR9409886A FR2723543B1 (fr) 1994-08-10 1994-08-10 Perfectionnements aux tamis cylindriques munis d'un rotor.

Publications (2)

Publication Number Publication Date
EP0696662A1 true EP0696662A1 (de) 1996-02-14
EP0696662B1 EP0696662B1 (de) 1999-06-16

Family

ID=9466218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401832A Expired - Lifetime EP0696662B1 (de) 1994-08-10 1995-08-04 Siebtrommel mit einem Rotor

Country Status (11)

Country Link
US (1) US5645724A (de)
EP (1) EP0696662B1 (de)
JP (1) JPH08176984A (de)
AT (1) ATE181381T1 (de)
CA (1) CA2155393A1 (de)
DE (1) DE69510282T2 (de)
ES (1) ES2135677T3 (de)
FI (1) FI110523B (de)
FR (1) FR2723543B1 (de)
NO (1) NO306568B1 (de)
PL (1) PL177018B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1743711A1 (de) * 2004-04-23 2007-01-17 Tsukasa industry Co. Limited Pulversiebvorrichtung

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001855A4 (de) * 1997-08-06 2000-11-29 Thermo Black Clawson Inc Verfahren und gerät zum sieben von papierstoff
US6010012A (en) * 1997-11-03 2000-01-04 Beloit Technologies, Inc. Fluidizing detrashing impeller
DE19830412C1 (de) * 1998-07-08 2000-02-03 Edwin Ell Rückspülbarer Filter für Flüssigkeiten
SE515896C2 (sv) * 2000-02-08 2001-10-22 Valmet Fibertech Ab Silanordning för fibersuspensioner samt en rotor för användning i en silanordning
AT408997B (de) * 2000-04-03 2002-04-25 Andritz Ag Maschf Sortierer für die papier-erzeugung und flügel für sortierer
US6942104B2 (en) * 2003-09-02 2005-09-13 Gl&V Management Hungary Kft. Rotor with multiple foils for screening apparatus for papermaking pulp
JP2006089884A (ja) * 2004-09-27 2006-04-06 Aikawa Iron Works Co Ltd スクリーン装置
CN1915457B (zh) * 2006-08-25 2010-06-02 李风宁 改进的压力筛转子
CN102383329B (zh) * 2011-09-30 2013-08-28 杭州萧山美特轻工机械有限公司 疏压筛

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436888A2 (de) * 1990-01-06 1991-07-17 Hermann Finckh Maschinenfabrik GmbH & Co. Rotor für Drucksortierer zum Sortieren von Fasersuspensionen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835173A (en) * 1955-03-03 1958-05-20 Black Clawson Co Paper machinery
US5192438A (en) * 1983-03-07 1993-03-09 A. Ahlstrom Corporation Rotating element for screening apparatus with a contour surface produced by a plurality of protrusions in the direction of the axial length of the rotor
CA1257849A (en) * 1985-12-24 1989-07-25 Steve Rowland Screening apparatus for fiber suspensions
JPH086274B2 (ja) * 1986-11-28 1996-01-24 石川島播磨重工業株式会社 紙料のスクリ−ン
US5156750A (en) * 1987-07-08 1992-10-20 A. Ahlstrom Corporation Method and apparatus for thickening a fiber suspension and removing fine particles therefrom
FI80736B (fi) * 1989-02-16 1990-03-30 Tampella Oy Ab Foerfarande foer sortering av massasuspension och sorteringsapparat.
US5061370A (en) * 1990-03-20 1991-10-29 Quebec And Ontario Paper Company Ltd. Screening device for slurries with improved rotor and hub design
EP0638687A1 (de) * 1993-08-06 1995-02-15 J.M. Voith GmbH Sortierer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436888A2 (de) * 1990-01-06 1991-07-17 Hermann Finckh Maschinenfabrik GmbH & Co. Rotor für Drucksortierer zum Sortieren von Fasersuspensionen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1743711A1 (de) * 2004-04-23 2007-01-17 Tsukasa industry Co. Limited Pulversiebvorrichtung
EP1743711A4 (de) * 2004-04-23 2008-02-13 Tsukasa Kasei Kogyo Pulversiebvorrichtung
US7699178B2 (en) 2004-04-23 2010-04-20 Tsukasa Industry Co., Ltd. Particulate sifter

Also Published As

Publication number Publication date
NO953097D0 (no) 1995-08-07
PL309971A1 (en) 1996-02-19
JPH08176984A (ja) 1996-07-09
FI953781A (fi) 1996-02-11
CA2155393A1 (fr) 1996-02-11
DE69510282D1 (de) 1999-07-22
FI110523B (fi) 2003-02-14
FR2723543B1 (fr) 1996-10-11
DE69510282T2 (de) 2000-01-05
FR2723543A1 (fr) 1996-02-16
FI953781A0 (fi) 1995-08-09
US5645724A (en) 1997-07-08
NO306568B1 (no) 1999-11-22
ES2135677T3 (es) 1999-11-01
NO953097L (no) 1996-02-12
EP0696662B1 (de) 1999-06-16
ATE181381T1 (de) 1999-07-15
PL177018B1 (pl) 1999-09-30

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