EP0696662B1 - Perfectionnements aux tamis cylindriques munis d'un rotor - Google Patents

Perfectionnements aux tamis cylindriques munis d'un rotor Download PDF

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Publication number
EP0696662B1
EP0696662B1 EP95401832A EP95401832A EP0696662B1 EP 0696662 B1 EP0696662 B1 EP 0696662B1 EP 95401832 A EP95401832 A EP 95401832A EP 95401832 A EP95401832 A EP 95401832A EP 0696662 B1 EP0696662 B1 EP 0696662B1
Authority
EP
European Patent Office
Prior art keywords
rotor
lobe
sieve according
cylindrical
sieve
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
EP95401832A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0696662A1 (fr
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/fr
Application granted granted Critical
Publication of EP0696662B1 publication Critical patent/EP0696662B1/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 present invention relates to sieves cylindrical with internal rotor and more particularly with the sieves used in the industry of the pulp.
  • These means can be fins (often called “foils”), protrusions arranged on the surface of a cylinder or even extra thicknesses provided at the surface of a cylinder.
  • the present invention relates to this type of rotor, but it is completely different from the rotors known in that the rotor is no longer a cylinder but is consisting of one or more surface portions cylindrical which, when developed to a plan are right triangles, both sides of which perpendiculars correspond respectively to a generator and at the base of the cylinder and whose the hypotenuse is oblique.
  • These cylindrico-triangular surfaces can be provided along their oblique side with protuberances that can be profiled.
  • Figure 1 shows four examples (1a, 1b, 1c, 1d) of known rotors.
  • 1a shows a rotor cylindrical which carries four fins: when these fins scroll along the inner surface of the sieve (not shown), they cause a front slight overpressure and at the back a slight depression. This results in a pressure beat which has the effect of detaching the fibers which have plated across holes (holes or slots) in the sieve and this as well when the sieve is in centrifugal than centripetal.
  • 1b and 1c there is shown a cylindrical rotor whose surface has protuberances: these protuberances produce turbulence and small variations in pressure.
  • 1d a rotor is shown consisting of two offset half-cylinders, which causes a sudden increase in pressure followed by gradual decrease.
  • the rotor 1 does not consist of a cylindrical surface regular, whose developed would be a rectangle but consists of a portion of cylindrical surface 2.
  • the Figure 5 is a developed view of a rotor does comprising only one portion of cylindrical surface.
  • each cylindrical surface portion (2 in Figure 5; 2a, 2b, 2c in Figure 4) is, when developing a triangle rectangle whose base 3 corresponds to the base of the cylinder and side 4 is the height, or again to a generator of the cylinder.
  • Sides 3 and 4 are perpendicular and side 5, oblique, constitutes the hypotenuse of the right triangle.
  • the invention is not limited to the examples shown : there must be at least one lobe, but there can be have two, three, four or more.
  • these protrusions 6 are arranged along the oblique side 5 of each lobe 2.
  • these protrusions have the form shown in Figure 6, i.e. their section decreases regularly from their front side (relative to the direction of rotation of the rotor) up to their back side.
  • the lobes are cut in a thin sheet and to strengthen them, we have the interior of each lobe a reinforcement 7, constituted by a curved sheet metal which is connected at its base to a disc 8 integral with 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)
  • Jellies, Jams, And Syrups (AREA)
  • Toys (AREA)
  • Catching Or Destruction (AREA)
  • Soil Working Implements (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP95401832A 1994-08-10 1995-08-04 Perfectionnements aux tamis cylindriques munis d'un rotor Expired - Lifetime EP0696662B1 (fr)

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 EP0696662A1 (fr) 1996-02-14
EP0696662B1 true EP0696662B1 (fr) 1999-06-16

Family

ID=9466218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401832A Expired - Lifetime EP0696662B1 (fr) 1994-08-10 1995-08-04 Perfectionnements aux tamis cylindriques munis d'un rotor

Country Status (11)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001513580A (ja) * 1997-08-06 2001-09-04 サーモ・ブラック・クローソン・インコーポレーテッド 紙原料篩分け装置および方法
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
EP1743711B1 (en) * 2004-04-23 2009-08-12 Tsukasa Industry Co., Ltd. Powder sorting device
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

Family Cites Families (9)

* 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.
DE4000248A1 (de) * 1990-01-06 1991-07-11 Emil Holz Rotor fuer drucksortierer zum sortieren von fasersuspensionen
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

Also Published As

Publication number Publication date
DE69510282D1 (de) 1999-07-22
PL309971A1 (en) 1996-02-19
FR2723543B1 (fr) 1996-10-11
ATE181381T1 (de) 1999-07-15
FI953781A0 (fi) 1995-08-09
NO953097D0 (no) 1995-08-07
ES2135677T3 (es) 1999-11-01
JPH08176984A (ja) 1996-07-09
NO306568B1 (no) 1999-11-22
EP0696662A1 (fr) 1996-02-14
CA2155393A1 (fr) 1996-02-11
US5645724A (en) 1997-07-08
DE69510282T2 (de) 2000-01-05
FI953781A (fi) 1996-02-11
FI110523B (fi) 2003-02-14
FR2723543A1 (fr) 1996-02-16
PL177018B1 (pl) 1999-09-30
NO953097L (no) 1996-02-12

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