EP0707109B1 - Perfectionnements aux tamis d'épuration, notamment pour la pâte à papier - Google Patents

Perfectionnements aux tamis d'épuration, notamment pour la pâte à papier Download PDF

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Publication number
EP0707109B1
EP0707109B1 EP95402233A EP95402233A EP0707109B1 EP 0707109 B1 EP0707109 B1 EP 0707109B1 EP 95402233 A EP95402233 A EP 95402233A EP 95402233 A EP95402233 A EP 95402233A EP 0707109 B1 EP0707109 B1 EP 0707109B1
Authority
EP
European Patent Office
Prior art keywords
sieve
circles
stack
ring
tie rods
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
EP95402233A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0707109A1 (fr
Inventor
Alain Serres
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 EP0707109A1 publication Critical patent/EP0707109A1/fr
Application granted granted Critical
Publication of EP0707109B1 publication Critical patent/EP0707109B1/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
    • D21D5/16—Cylinders and plates for screens
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders

Definitions

  • the present invention relates to a sieve consisting of a stack of circular elements stacked on top of each other the others and held together by a plurality of tie rods parallel to the generatrices of the cylinder, in which each circular element is constituted by a U-shaped curved so as to form a circle.
  • the U-shaped elements are fixed without have recourse, as was the case previously to the soldering or placing a jumper on the ends branches of the U.
  • the tie rods are associated with two upper crowns and lower to form a cylindrical framework rigid on which the U-shaped circles are threaded; the pre-tensioning said circles being carried out by tightening on the stack of an additional crown.
  • FIGS. 1 and 2 represent a sieve of known type, as described in patent No. 88.10863 of 08/12/1988.
  • the U-profile thus prepared is then bent, which after which either we spirally wrap it or else cut it into pieces of the same length so that make circles that are stacked on top of each other other.
  • the U-profile When the sieve must operate in centrifugal mode (i.e. when the material to be filtered is inserted inside the cylinder), the U-profile is arranged so that the two side walls of the U are facing outwards. In contrast, when the sieve must operate in centripetal regime (i.e. when the material to be filtered circulates outside to inside), the side walls of the U are turned inward.
  • the profile is produced U-shaped circles of the same diameter. For that or else bend the U-section so as to obtain several windings, then cut sections which allow to form circles with the desired diameter; or else cut the U-shaped section into sections of the same length and we bend them to form a circle.
  • crown 2 at the base of the stack and top another crown 3.
  • tie rods 4 are threaded at their two ends of so as to be able to receive nuts 6 which allow tighten large enough for the circles be kept clear of each other others in operation.
  • each tie 4 is screwed into the lower crown 2 and is fitted a nut 6 its upper part; but he is possible to put a nut 6 at each end, the two crowns 2 and 3 then being identical.
  • This relative elasticity is a big advantage, but it has a disadvantage for large sieves diameters, i.e. for sieves whose diameter is greater than 1 meter.
  • tie rods not to tighten the U against each other but to constitute, in cooperation with two crowns, a framework rigid cylindrical on which the U are threaded the one after the other.
  • Elastic tightening with pre-tension U is then done by means of a crown additional, called tightening crown which is screwed precisely on said rigid frame.
  • the framework rigid cylindrical is produced by bars 14 which are, by means of screws 15 fixed securely to a upper crown 10 and lower crown 12. So the two crowns 10-12 and the bars 14 form a kind of solid cage. To improve the rigidities of the assembly, the ends 14a and 14b of the bars 14 are fitted in housing correspondents in crowns 10 and 12.
  • a crown 13 is then placed on the circle in a U which is the first of the stack and this crown 13 is tightened by a plurality of screws 17 on the upper crown 10.
  • the lower face 13a of the crown 13 thus exerts a clamping pressure on stacking circles 11.
  • shims 16 there is between the lower face 13a of the tightening ring 13 and the first circle 11 one or more shims 16.
  • the shims 18 we can determine with precision the tightening stroke of the crown 13 on the crown 10 and therefore, given the thickness of the shims 16, the exact value of the pre-tension at which is subject to the stacking of the circles 11 in a U-shaped profile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP95402233A 1994-10-14 1995-10-06 Perfectionnements aux tamis d'épuration, notamment pour la pâte à papier Expired - Lifetime EP0707109B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412267A FR2725737B1 (fr) 1994-10-14 1994-10-14 Perfectionnements aux tamis d'epuration, notamment pour la pate a papier
FR9412267 1994-10-14

Publications (2)

Publication Number Publication Date
EP0707109A1 EP0707109A1 (fr) 1996-04-17
EP0707109B1 true EP0707109B1 (fr) 1999-01-13

Family

ID=9467851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402233A Expired - Lifetime EP0707109B1 (fr) 1994-10-14 1995-10-06 Perfectionnements aux tamis d'épuration, notamment pour la pâte à papier

Country Status (13)

Country Link
US (1) US5697503A (no)
EP (1) EP0707109B1 (no)
JP (1) JPH08206600A (no)
KR (1) KR100391996B1 (no)
AT (1) ATE175739T1 (no)
BR (1) BR9504352A (no)
CA (1) CA2160222C (no)
DE (1) DE69507243T2 (no)
ES (1) ES2129781T3 (no)
FI (1) FI110525B (no)
FR (1) FR2725737B1 (no)
NO (1) NO306567B1 (no)
TW (1) TW305897B (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101676048B (zh) * 2008-09-19 2011-11-09 赵仁理 圆筒形自动铆接装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794478B1 (fr) 1999-06-04 2001-08-03 Lamort E & M Tamis cylindrique, notamment pour la pate a papier
EP1582271B1 (en) * 2002-12-27 2012-03-07 Tsukasa industry Co. Limited Cylindrical sieve
CN101171390B (zh) 2005-05-09 2011-04-13 纺织过滤材料股份有限公司 筛网筐及装配筛网筐的方法
CA2509966A1 (en) * 2005-06-01 2006-12-01 Accent Manufacturing, Inc. Internally fed rotary screen manure separator
US8297445B2 (en) 2007-11-14 2012-10-30 Filtration Fibrewall Inc. Screen basket
CN106391461A (zh) * 2016-11-28 2017-02-15 新乡市振英机械设备有限公司 一种直线筛网地脚固定装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ182084A (en) * 1976-09-17 1981-02-11 Contra Shear Holdings Rotating drum screen
FR2635344A1 (fr) 1988-08-12 1990-02-16 Lamort E & M Perfectionnements aux tamis pour epurateurs et classificateurs de pate a papier et procedes de realisation de tels tamis
EP0354846B1 (fr) * 1988-08-12 1992-10-21 E & M LAMORT Tamis pour épurateur et classificateur de pâte à papier
US4986900A (en) * 1989-04-04 1991-01-22 A. Ahlstrom Corporation Sectional screen cylinder
FR2676076B1 (fr) * 1991-05-03 1993-08-06 Lamort E & M Couronne d'extremite de tamis cylindrique pour epurateur et classificateur de pate a papier et son procede de realisation.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101676048B (zh) * 2008-09-19 2011-11-09 赵仁理 圆筒形自动铆接装置

Also Published As

Publication number Publication date
CA2160222C (fr) 2006-09-12
TW305897B (no) 1997-05-21
BR9504352A (pt) 1997-09-02
JPH08206600A (ja) 1996-08-13
FR2725737A1 (fr) 1996-04-19
NO954037L (no) 1996-04-15
DE69507243T2 (de) 1999-09-02
KR100391996B1 (ko) 2003-11-13
NO954037D0 (no) 1995-10-11
FI954885A0 (fi) 1995-10-13
FI110525B (fi) 2003-02-14
FI954885A (fi) 1996-04-15
ES2129781T3 (es) 1999-06-16
NO306567B1 (no) 1999-11-22
ATE175739T1 (de) 1999-01-15
KR960014532A (ko) 1996-05-22
CA2160222A1 (fr) 1996-04-15
FR2725737B1 (fr) 1997-01-31
US5697503A (en) 1997-12-16
EP0707109A1 (fr) 1996-04-17
DE69507243D1 (de) 1999-02-25

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