EP0707109A1 - Reinigungssieb insbesondere für Papierfaserbrei - Google Patents

Reinigungssieb insbesondere für Papierfaserbrei Download PDF

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Publication number
EP0707109A1
EP0707109A1 EP95402233A EP95402233A EP0707109A1 EP 0707109 A1 EP0707109 A1 EP 0707109A1 EP 95402233 A EP95402233 A EP 95402233A EP 95402233 A EP95402233 A EP 95402233A EP 0707109 A1 EP0707109 A1 EP 0707109A1
Authority
EP
European Patent Office
Prior art keywords
circles
screen according
stack
tie rods
ring
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
EP95402233A
Other languages
English (en)
French (fr)
Other versions
EP0707109B1 (de
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/de
Application granted granted Critical
Publication of EP0707109B1 publication Critical patent/EP0707109B1/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
    • D21D5/16—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 screen consisting of a stack of circular elements stacked on top of each other 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-profile bent so as to constitute a circle.
  • the circular elements are made from U-shaped elements, there will occur, under the effect of the traction exerted by the tie rods, on the one hand a slight bending of the two branches of the U, which slightly approach the one of the other; on the other hand a slight deformation of the base of the U which bulges very slightly.
  • a stack is thus obtained having sufficient elasticity to withstand the pressure variations caused by the foil, and to allow the pre-tensioning effect which is given by the tie rods to be determined at will.
  • the tie rods are associated with two upper and lower rings to form a rigid cylindrical frame on which the U-shaped circles are threaded; the pre-tensioning of said circles being carried out by tightening on the stack of an additional crown.
  • Figures 1 and 2 show a known type of sieve, as described in patent No. 88.10863 of 12/08/1988.
  • the U-profile thus prepared is then bent, after which either it is wound in a spiral or else it is cut into pieces of the same length so as to form circles which are stacked on top of each other.
  • the U-shaped profile is arranged so that the two side walls of the U are facing towards the 'outside.
  • centripetal regime that is to say when the material to be filtered circulates from the outside to the inside
  • circles of the same diameter are produced with the U-shaped profile. For that or else bend the U-shaped section so as to obtain several windings, then cut sections which make it possible to form circles with the desired diameter; or else cut the U-shaped section into sections of the same length and bend them so as to form a circle.
  • a circle 1 is obtained in which the side walls of the U are turned inwards, as shown in FIG. 3 or else a circle 1 ′ in which the side walls of the U are turned outward, as shown in Figure 6.
  • crown 2 at the base of the stack and another crown 3 at the top.
  • tie rods 4 are threaded at their two ends so as to be able to receive nuts 6 which allow a sufficiently large tightening to be achieved so that the circles are held without play against one another in operation.
  • each tie rod 4 is screwed into the lower ring 2 and is provided with a nut 6 on its upper part; but it is possible to put a nut 6 at each end, the two crowns 2 and 3 then being identical.
  • FIGS. 3 and 4 which represent a sieve which must operate in centripetal regime, it is preferable that there are as few obstacles as possible on the outside surface of the screen: the tie rods 4 are then placed inside the screen.
  • the tie rods are used, not to clamp the Us against each other but to constitute, in cooperation with two crowns, a rigid cylindrical framework on which the Us are threaded. one after the other.
  • the elastic tightening with pre-tensioning of the Us is then carried out by means of an additional crown, known as a clamping crown which is precisely screwed onto said rigid framework.
  • the rigid cylindrical framework is produced by bars 14 which are, by means of screws 15 fixed securely to an upper ring 10 and a lower ring 12.
  • the two rings 10-12 and the bars 14 form a kind of solid cage.
  • the ends 14a and 14b of the bars 14 are fitted into corresponding housings formed in the crowns 10 and 12.
  • a crown 13 is then placed on the U-shaped circle 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 the stack of circles 11.
  • one or more shims 16 are placed between the lower face 13a of the tightening ring 13 and the first circle 11.
  • the clamping ring 13 and the upper ring shims 18 are between the clamping ring 13 and the upper ring shims 18 in the form of washers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP95402233A 1994-10-14 1995-10-06 Reinigungssieb insbesondere für Papierfaserbrei Expired - Lifetime EP0707109B1 (de)

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 true EP0707109A1 (de) 1996-04-17
EP0707109B1 EP0707109B1 (de) 1999-01-13

Family

ID=9467851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402233A Expired - Lifetime EP0707109B1 (de) 1994-10-14 1995-10-06 Reinigungssieb insbesondere für Papierfaserbrei

Country Status (13)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794478A1 (fr) * 1999-06-04 2000-12-08 Lamort E & M Tamis cylindrique, notamment pour la pate a papier
EP1582271A1 (de) * 2002-12-27 2005-10-05 Tsukasa industry Co. Limited Rundzylindersieb
US8297445B2 (en) 2007-11-14 2012-10-30 Filtration Fibrewall Inc. Screen basket
US8469198B2 (en) 2005-05-09 2013-06-25 Kadant Canada Corp. Screen basket with replaceable profiled bars
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060273048A1 (en) * 2005-06-01 2006-12-07 Accent Manufacturing, Inc. Internally fed rotary screen manure separator
CN101676048B (zh) * 2008-09-19 2011-11-09 赵仁理 圆筒形自动铆接装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354846A1 (de) 1988-08-12 1990-02-14 E & M LAMORT Sieb zur Reinigung und Klassifizierung von Papierstoffbrei
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
WO1990012147A1 (en) 1989-04-04 1990-10-18 A. Ahlstrom Corporation Sectional screen cylinder

Family Cites Families (2)

* 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
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.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354846A1 (de) 1988-08-12 1990-02-14 E & M LAMORT Sieb zur Reinigung und Klassifizierung von Papierstoffbrei
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
WO1990012147A1 (en) 1989-04-04 1990-10-18 A. Ahlstrom Corporation Sectional screen cylinder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794478A1 (fr) * 1999-06-04 2000-12-08 Lamort E & M Tamis cylindrique, notamment pour la pate a papier
US6338412B1 (en) 1999-06-04 2002-01-15 E & M Lamort Cylindrical screen, particularly for paper pulp
USRE38738E1 (en) 1999-06-04 2005-05-31 Kadant Lamort Cylindrical screen, particularly for paper pulp
EP1582271A1 (de) * 2002-12-27 2005-10-05 Tsukasa industry Co. Limited Rundzylindersieb
EP1582271A4 (de) * 2002-12-27 2010-05-26 Tsukasa Kasei Kogyo Rundzylindersieb
US8469198B2 (en) 2005-05-09 2013-06-25 Kadant Canada Corp. Screen basket with replaceable profiled bars
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

Also Published As

Publication number Publication date
ATE175739T1 (de) 1999-01-15
CA2160222C (fr) 2006-09-12
US5697503A (en) 1997-12-16
DE69507243D1 (de) 1999-02-25
KR960014532A (ko) 1996-05-22
JPH08206600A (ja) 1996-08-13
FI954885A0 (fi) 1995-10-13
DE69507243T2 (de) 1999-09-02
ES2129781T3 (es) 1999-06-16
NO954037D0 (no) 1995-10-11
BR9504352A (pt) 1997-09-02
KR100391996B1 (ko) 2003-11-13
FI110525B (fi) 2003-02-14
NO306567B1 (no) 1999-11-22
CA2160222A1 (fr) 1996-04-15
EP0707109B1 (de) 1999-01-13
TW305897B (de) 1997-05-21
FR2725737A1 (fr) 1996-04-19
FR2725737B1 (fr) 1997-01-31
NO954037L (no) 1996-04-15
FI954885A (fi) 1996-04-15

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