EP0521192A1 - Elément pour épurateur - Google Patents

Elément pour épurateur Download PDF

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Publication number
EP0521192A1
EP0521192A1 EP91120515A EP91120515A EP0521192A1 EP 0521192 A1 EP0521192 A1 EP 0521192A1 EP 91120515 A EP91120515 A EP 91120515A EP 91120515 A EP91120515 A EP 91120515A EP 0521192 A1 EP0521192 A1 EP 0521192A1
Authority
EP
European Patent Office
Prior art keywords
sieve
inserts
recesses
screen
support
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.)
Ceased
Application number
EP91120515A
Other languages
German (de)
English (en)
Inventor
Frank Lotter
Waldemar R. Dipl.-Ing./Dipl.-Kfm. Knodel
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.)
Fiedler Heinrich GmbH and Co KG
Original Assignee
Fiedler Heinrich GmbH and Co KG
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 Fiedler Heinrich GmbH and Co KG filed Critical Fiedler Heinrich GmbH and Co KG
Publication of EP0521192A1 publication Critical patent/EP0521192A1/fr
Ceased 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

Definitions

  • the invention relates to a screen element for sorting / classifying, in particular in the field of paper technology for the preparation of fiber suspensions or for the mechanical cleaning of molasses in the sugar industry, the screen wall of which, on the one hand, in particular the inflow side, bores designed as classifying openings and on the other, in particular the Downflow side, has recesses, the cross section of which extends over a plurality of classifying openings which open into the recesses.
  • the invention is based on the object of developing a sieve element of the type mentioned in such a way that maintenance, repair and replacement of the fine sieve are substantially simplified while avoiding the aforementioned disadvantages, and an adaptation of the classifying openings to different ones Sorting tasks is made easier.
  • the screen wall consists of a support screen which contains the recesses and a plurality of individual screen inserts which are firmly inserted into recesses in the support screen and in which the classifying openings are formed.
  • the central axes of the recesses and the recesses in the support screen can run coaxially or at an angle to one another.
  • the sieve inserts can preferably be in the form of flat plates, but can also be cup-shaped, in the latter case the classifying openings advantageously being in the form of slots in the cup wall.
  • the surface of the sieve inserts can be arranged flush with the surface of the support sieve or set back from it.
  • the screen inserts can be arranged inclined at an acute angle to the surface of the support screen.
  • the sieve inserts can be circular or rectangular, both the long or the short sides of the rectangle being able to be aligned with the flow direction of the fiber suspension.
  • the sieve inserts according to the invention enable a good adaptation to the requirements of the sorting task.
  • Sieve inserts that have been excessively worn, damaged or destroyed due to overuse, for example, can also be replaced individually.
  • Due to the special arrangement of the sieve inserts, for example offset or at an angle to the surface of the support sieve an irregular surface can be produced in a relatively simple manner in order to generate turbulence during the flow and avoidance of constipation.
  • An increase in throughput can be achieved by aligning the sieve inserts according to the flow direction of the material to be sorted.
  • the screen basket according to the invention is particularly suitable in such applications, where large sheet thicknesses are to be sorted with small screen openings due to high stress.
  • FIG. 1 shows schematically, in section, part of a sieve wall 10 of a cylindrical sieve element 40, which is only schematically indicated in FIG. 6.
  • the sieve wall 10 consists of a support sieve 12 and a large number of individual sieve inserts 14.
  • the sieve inserts 14 are in the form of a plate which are inserted into a corresponding recess 18 in the support sieve 12 and suitably connected to this, but this is not shown.
  • the sieve insert 14 can, for example, be pressed into the recess 18 of the support sieve 12, possibly also glued in, or it can be welded to the support sieve, but a releasable connection is preferred, which enables the individual sieve inserts 14 to be worn, for example if worn or damaged Carrier sieve 12 to be solved individually and replaced with a new sieve insert.
  • the support sieve 12 is also provided with, for example, circular cylindrical recesses 16 which extend from the surface 42 of the support sieve 12 facing away from the sieve inserts 14 and open into the recesses 18 in which the sieve inserts 14 are received.
  • the plate-shaped sieve insert 14, as shown in FIGS. 1, 2, 3 and 5, is provided with a plurality of parallel through bores which form the classifying openings 20. The latter are shown here in the form of cylindrical through holes for the sake of simplicity, but they can have any cross section desired or suitable for the classification.
  • the material thickness or thickness of the sieve inserts 14 can be, for example, in the range from 0.1 to 10 mm, but is not limited to this.
  • the hole widths or slot widths in the sieve inserts can be, for example, in the range of 0.1-1 mm.
  • the thickness of the support screen 12 depends on the load selected, but in any case it is larger than the thickness of the sieve inserts 14.
  • the outer surface 24 of the screen insert 14 is flush with the surface 22 of the support screen 12.
  • the sieve insert 14 is set back against the surface 22 of the carrying sieve 12 by the dimension G, which causes an irregular surface of the sieve wall and thus turbulence is generated or intensified when the flow flows through suspensions, thereby clogging the classification openings 20 can be reduced or avoided.
  • the central axes of the recess 16 and the recess 18 run coaxially with one another. In the embodiments according to FIGS.
  • the central axes of the recess 16 and the recess 18 form an angle relative to one another, or in other words, the plate-shaped screen inserts 14 are inclined at an angle to the surface in the embodiments according to FIGS. 3 and 5 22 of the support sieves 12 installed.
  • the angle ⁇ can be, for example, in the range from 10 to 30 ° , without being limited to this.
  • Figure 5 shows an embodiment in which the strainer 14 is more inclined to the surface 22 of the carrying wire 12, that is, the angle ⁇ can here for example in the range of 25 - 45, in particular at about 30 - 35 o do.
  • This strong inclination of the sieve insert 14, as shown in FIG. 5, causes the sieve insert to be aligned with the flow direction of the material to be sorted, as a result of which the throughput through the sieve element can be increased.
  • Figure 4 shows schematically in section a variant of the sieve insert 14, which here is approximately in the form of a cup 26, the upper part 28 is received in the recess 18 of the support screen 12 and the lower part 30 protrudes into the recess 16 of the support screen 12.
  • the outer diameter of the lower part 30 is smaller than the inner diameter of the recess 16, so that an annular space 44 is formed between the two.
  • the lower part 30 of the cup-shaped support sieve 14 according to FIG. 4 is provided with slots 46 formed in the cup wall, which form the classifying openings 20 in this embodiment.
  • the slots 46 expediently run parallel to the central axis of the screen insert 14.
  • the bottom 32 of the cup-shaped sieve insert 14 according to FIG. 4 is not provided with openings, but if desired 32 classification openings can also be provided in the bottom.
  • the material to be sorted flows from the interior of the cup-shaped sieve insert 14 through the slots 46 into the annular space 44 and from there through the recess 16.
  • the recess 16 extends over a plurality of classification openings 20.
  • their diameter can be approximately 15-50 mm.
  • FIG. 6 shows some cross-sectional shapes of the screen inserts 14, which can be firmly inserted into the support screen 12, which together with the screen inserts forms the screen basket 40.
  • the screen inserts can be circular as shown at 34, or rectangular as shown at 36 and 38.
  • the short side (36) of the rectangle or the long side (38) of the rectangle can be aligned with the direction of flow of the items to be sorted, which is represented by the arrow P.
  • FIGS. 1-5 it was assumed that the surface 22 of the support screen forms the inflow side and the surface 42 of the support screen 12 forms the outflow side. If necessary, the flow can also be reversed.
  • the thickness of the support screen 12 is denoted by s and the height or depth of the sieve insert 14 by T.
  • the sieve insert 14 can now also be designed such that it protrudes beyond the surface 42 of the carrying sieve 12, that is to say in such an embodiment the dimension T is then greater than the dimension s.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
EP91120515A 1991-07-02 1991-11-29 Elément pour épurateur Ceased EP0521192A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4121896 1991-07-02
DE4121896A DE4121896A1 (de) 1991-07-02 1991-07-02 Siebelement

Publications (1)

Publication Number Publication Date
EP0521192A1 true EP0521192A1 (fr) 1993-01-07

Family

ID=6435270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120515A Ceased EP0521192A1 (fr) 1991-07-02 1991-11-29 Elément pour épurateur

Country Status (4)

Country Link
US (1) US5384046A (fr)
EP (1) EP0521192A1 (fr)
CA (1) CA2072776A1 (fr)
DE (1) DE4121896A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023930A1 (fr) * 1995-02-03 1996-08-08 Hermann Finckh Maschinenfabrik Gmbh & Co. Trieuse sous pression de suspensions de fibres et crible pour ces trieuses sous pression
WO1996039558A1 (fr) * 1995-06-06 1996-12-12 Cae Screenplates Oy Tamis a surfaces profilees multiples
EP0905309A3 (fr) * 1995-02-03 1999-05-19 Hermann Finckh Maschinenfabrik GmbH & Co. Tamis et appareil de tamisage sous pression pour suspensions fibreuses
WO2003008112A1 (fr) * 2001-07-18 2003-01-30 Hte Aktiengesellschaft The High Throughput Experimentation Company Dispositif de tamisage pour cribler des materiaux solides
WO2003091497A1 (fr) * 2002-04-24 2003-11-06 Frejborg Frey A Partie de tamis, cylindre de tamis, dispositif de tamisage et procede de tamisage pour materiau fibreux
US6915910B2 (en) 2001-04-16 2005-07-12 J&L Fiber Services, Inc. Screen cylinder and method

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635189C2 (de) * 1996-08-30 1999-01-28 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben
DE29805984U1 (de) * 1998-04-01 1998-07-02 A.S. Apparatebau GmbH, 83607 Holzkirchen Siebboden
US5935435A (en) * 1998-04-20 1999-08-10 Hasler; James J. Paint can strainer
SE526033C3 (sv) 2003-11-06 2009-12-08 Metso Paper Inc Silanordning och silkorg för silning av massasuspensioner
US20090020461A1 (en) 2005-05-09 2009-01-22 Filtration Fibrewall Inc. Screen Basket with Replaceable Profiled Bars
US20090101336A1 (en) * 2007-10-19 2009-04-23 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7775271B2 (en) * 2007-10-19 2010-08-17 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7775277B2 (en) 2007-10-19 2010-08-17 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7789139B2 (en) * 2007-10-19 2010-09-07 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7913755B2 (en) * 2007-10-19 2011-03-29 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7784543B2 (en) 2007-10-19 2010-08-31 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US7793714B2 (en) * 2007-10-19 2010-09-14 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
JP5465181B2 (ja) 2007-11-14 2014-04-09 フィルトレーション・ファイバーウォール・インコーポレーテッド スクリーンバスケット
US20090283256A1 (en) * 2008-05-13 2009-11-19 Baker Hughes Incorporated Downhole tubular length compensating system and method
US8171999B2 (en) 2008-05-13 2012-05-08 Baker Huges Incorporated Downhole flow control device and method
US8555958B2 (en) 2008-05-13 2013-10-15 Baker Hughes Incorporated Pipeless steam assisted gravity drainage system and method
US8113292B2 (en) * 2008-05-13 2012-02-14 Baker Hughes Incorporated Strokable liner hanger and method
US7789152B2 (en) * 2008-05-13 2010-09-07 Baker Hughes Incorporated Plug protection system and method
US20100300675A1 (en) * 2009-06-02 2010-12-02 Baker Hughes Incorporated Permeability flow balancing within integral screen joints
US20100300674A1 (en) * 2009-06-02 2010-12-02 Baker Hughes Incorporated Permeability flow balancing within integral screen joints
US8056627B2 (en) * 2009-06-02 2011-11-15 Baker Hughes Incorporated Permeability flow balancing within integral screen joints and method
US8151881B2 (en) * 2009-06-02 2012-04-10 Baker Hughes Incorporated Permeability flow balancing within integral screen joints
US8132624B2 (en) * 2009-06-02 2012-03-13 Baker Hughes Incorporated Permeability flow balancing within integral screen joints and method
SE537441C2 (sv) * 2013-08-29 2015-04-28 Bomill Ab Trumma, en maskin som innefattar en sådan trumma, och ett förfarande för tillverkning av en sådan trumma

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146641A1 (fr) * 1983-10-11 1985-07-03 Hermann Finckh Maschinenfabrik GmbH & Co. Tamis à trier pour suspensions de fibres de pâte
DE3925098A1 (de) * 1989-07-28 1991-01-31 Ask High Technology Tech Entwi Einrichtung zum zerkleinern von material
DE9108128U1 (de) * 1991-07-02 1991-09-05 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Siebelement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923138A (en) * 1931-11-24 1933-08-22 Brassert & Co Method and apparatus for continuous filtering
US2253692A (en) * 1940-02-05 1941-08-26 Brassert & Co Filter construction
US2371760A (en) * 1941-05-22 1945-03-20 Brassert & Co Filter
US2956683A (en) * 1957-02-01 1960-10-18 Kinney Eng Inc S P Water strainer
US3275151A (en) * 1965-07-19 1966-09-27 S P Kinney Engineering Inc Disc-type strainer
US3713541A (en) * 1971-05-10 1973-01-30 Bird Machine Co Screening machine with slotted screen
FR2572950B1 (fr) * 1984-11-12 1987-01-23 Lamort E & M Perfectionnements aux tamis pour epurateurs et a leur mode de fabrication
NL8602863A (nl) * 1986-11-12 1988-06-01 Philips Nv Filtreerinrichting.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146641A1 (fr) * 1983-10-11 1985-07-03 Hermann Finckh Maschinenfabrik GmbH & Co. Tamis à trier pour suspensions de fibres de pâte
DE3925098A1 (de) * 1989-07-28 1991-01-31 Ask High Technology Tech Entwi Einrichtung zum zerkleinern von material
DE9108128U1 (de) * 1991-07-02 1991-09-05 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Siebelement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023930A1 (fr) * 1995-02-03 1996-08-08 Hermann Finckh Maschinenfabrik Gmbh & Co. Trieuse sous pression de suspensions de fibres et crible pour ces trieuses sous pression
EP0905309A3 (fr) * 1995-02-03 1999-05-19 Hermann Finckh Maschinenfabrik GmbH & Co. Tamis et appareil de tamisage sous pression pour suspensions fibreuses
US6029825A (en) * 1995-02-03 2000-02-29 Hermann Finckh Maschinenfabrik Gmbh & Co. Pressure sorter for sorting fiber suspensions as well as screen for such a pressure sorter
WO1996039558A1 (fr) * 1995-06-06 1996-12-12 Cae Screenplates Oy Tamis a surfaces profilees multiples
CN1077634C (zh) * 1995-06-06 2002-01-09 Cae筛板公司 一种过筛圆筒或板及过筛浆液的方法
US6915910B2 (en) 2001-04-16 2005-07-12 J&L Fiber Services, Inc. Screen cylinder and method
WO2003008112A1 (fr) * 2001-07-18 2003-01-30 Hte Aktiengesellschaft The High Throughput Experimentation Company Dispositif de tamisage pour cribler des materiaux solides
US7147109B2 (en) 2001-07-18 2006-12-12 Hte Aktiengesellschaft The High Throughput Experimentation Company Sieve device for screening solid material
WO2003091497A1 (fr) * 2002-04-24 2003-11-06 Frejborg Frey A Partie de tamis, cylindre de tamis, dispositif de tamisage et procede de tamisage pour materiau fibreux

Also Published As

Publication number Publication date
US5384046A (en) 1995-01-24
DE4121896A1 (de) 1993-01-07
CA2072776A1 (fr) 1993-01-03

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