EP0696662B1 - Perfectionnements aux tamis cylindriques munis d'un rotor - Google Patents
Perfectionnements aux tamis cylindriques munis d'un rotor Download PDFInfo
- 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
Links
- 230000007423 decrease Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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)
- Catching Or Destruction (AREA)
- Toys (AREA)
- Jellies, Jams, And Syrups (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Soil Working Implements (AREA)
Description
Claims (6)
- Tamis cylindrique à l'intérieur duquel tourne un rotor muni de moyens provoquant des variations de pression et/ou des turbulences, caractérisé par le fait que ledit rotor (1) est constitué par une ou plusieurs portions de surfaces cylindriques (2) qui, lorsqu'elles sont développées sont des triangles rectangles dont les deux côtés perpendiculaires (3, 4) correspondent respectivement à la base du cylindre (3) et à une hauteur (4) et dont le côté oblique (5) constitue l'hypoténuse.
- Tamis selon la revendication 1, caractérisé par le fait que chaque portion de surface cylindrico-triangulaire, ou lobe (2) comporte une pluralité de protubérances (6).
- Tamis selon la revendication 2, dans lequel les protubérances (6) sont disposées le long du côté oblique (5).
- Tamis selon la revendication 3, dans lequel les protubérances (6) sont décalées d'un lobe (2) à l'autre lorsqu'il y a plusieurs lobes.
- Tamis selon l'une quelconque des revendications 2 à 4, dans lequel la section de chaque protubérance (6) diminue depuis sa partie avant jusqu'à sa partie arrière.
- Tamis selon l'une quelconque des revendications précédentes, dans lequel chaque lobe (2) est découpé dans une tôle qui est renforcée par un voile (7) porté par un disque (8) solidaire d'un manchon (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9409886A FR2723543B1 (fr) | 1994-08-10 | 1994-08-10 | Perfectionnements aux tamis cylindriques munis d'un rotor. |
FR9409886 | 1994-08-10 |
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 (fr) |
EP (1) | EP0696662B1 (fr) |
JP (1) | JPH08176984A (fr) |
AT (1) | ATE181381T1 (fr) |
CA (1) | CA2155393A1 (fr) |
DE (1) | DE69510282T2 (fr) |
ES (1) | ES2135677T3 (fr) |
FI (1) | FI110523B (fr) |
FR (1) | FR2723543B1 (fr) |
NO (1) | NO306568B1 (fr) |
PL (1) | PL177018B1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2297744A1 (fr) * | 1997-08-06 | 1999-02-18 | Peter Seifert | Procede et appareil permettant d'epurer de la pate a papier |
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 (fr) * | 2004-04-23 | 2009-08-12 | Tsukasa Industry Co., Ltd. | Dispositif de tri de poudre |
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)
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 (fr) * | 1985-12-24 | 1989-07-25 | Steve Rowland | Separateur des fibres presentes dans une suspension |
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 (fr) * | 1993-08-06 | 1995-02-15 | J.M. Voith GmbH | Dispositif d'épuration |
-
1994
- 1994-08-10 FR FR9409886A patent/FR2723543B1/fr not_active Expired - Fee Related
-
1995
- 1995-08-03 CA CA002155393A patent/CA2155393A1/fr not_active Abandoned
- 1995-08-04 ES ES95401832T patent/ES2135677T3/es not_active Expired - Lifetime
- 1995-08-04 DE DE69510282T patent/DE69510282T2/de not_active Expired - Fee Related
- 1995-08-04 EP EP95401832A patent/EP0696662B1/fr not_active Expired - Lifetime
- 1995-08-04 AT AT95401832T patent/ATE181381T1/de not_active IP Right Cessation
- 1995-08-07 NO NO953097A patent/NO306568B1/no not_active IP Right Cessation
- 1995-08-09 JP JP7224759A patent/JPH08176984A/ja active Pending
- 1995-08-09 US US08/513,043 patent/US5645724A/en not_active Expired - Fee Related
- 1995-08-09 FI FI953781A patent/FI110523B/fi not_active IP Right Cessation
- 1995-08-10 PL PL95309971A patent/PL177018B1/pl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2723543A1 (fr) | 1996-02-16 |
PL177018B1 (pl) | 1999-09-30 |
NO953097L (no) | 1996-02-12 |
US5645724A (en) | 1997-07-08 |
FI953781A0 (fi) | 1995-08-09 |
NO306568B1 (no) | 1999-11-22 |
FI110523B (fi) | 2003-02-14 |
NO953097D0 (no) | 1995-08-07 |
DE69510282T2 (de) | 2000-01-05 |
ATE181381T1 (de) | 1999-07-15 |
DE69510282D1 (de) | 1999-07-22 |
PL309971A1 (en) | 1996-02-19 |
FI953781A (fi) | 1996-02-11 |
EP0696662A1 (fr) | 1996-02-14 |
JPH08176984A (ja) | 1996-07-09 |
ES2135677T3 (es) | 1999-11-01 |
CA2155393A1 (fr) | 1996-02-11 |
FR2723543B1 (fr) | 1996-10-11 |
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