WO2000065151A8 - Edge wire contour with enhanced functionality - Google Patents

Edge wire contour with enhanced functionality

Info

Publication number
WO2000065151A8
WO2000065151A8 PCT/US2000/011071 US0011071W WO0065151A8 WO 2000065151 A8 WO2000065151 A8 WO 2000065151A8 US 0011071 W US0011071 W US 0011071W WO 0065151 A8 WO0065151 A8 WO 0065151A8
Authority
WO
WIPO (PCT)
Prior art keywords
sharp edge
cylinder
protuberances
slot
upstream
Prior art date
Application number
PCT/US2000/011071
Other languages
French (fr)
Other versions
WO2000065151A1 (en
Inventor
Frey A Frejborg
Original Assignee
Cae Screenplates Inc
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 Cae Screenplates Inc filed Critical Cae Screenplates Inc
Priority to AU46612/00A priority Critical patent/AU4661200A/en
Publication of WO2000065151A1 publication Critical patent/WO2000065151A1/en
Publication of WO2000065151A8 publication Critical patent/WO2000065151A8/en

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

A screen cylinder (125) formed from discrete elements (128) (a wedge wire type screen cylinder) is constructed to accurately simulate the form of a substantially sharp edge milled screen cylinder having substantially the same contour. The simulation is preferably accomplished by providing at the transition between the upstream and downstream surfaces (132, 133) of any particular (128) bar or wire a portion (44) substantially parallel to the tangential direction (14) of movement of the cylinder or slurry moving therepast, and a substantially sharp edge (45) between the upstream surface and the transition. Protuberances (38, 40) defining the slot (130) are also preferably provided on both the upstream and downstream bars or wires, the protuberances (38, 40) having substantially parallel surfaces (41, 42) that are substantially co-extensive and are at least as long as the slot is wide, and effect a plug phenomena during the negative pulse phase. A substantially sharp edge (39) and substantially rectangular cross section protuberance (38) may extend outwardly from the upstream surface of each bar or wire defining a screen slot. A cylinder is used for screening cellulose pulp slurries, and has a debris removal efficiency at least about 10 % greater than a comparable wedge wire screen cylinder without sharp edge protuberances.
PCT/US2000/011071 1999-04-27 2000-04-26 Edge wire contour with enhanced functionality WO2000065151A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46612/00A AU4661200A (en) 1999-04-27 2000-04-26 Edge wire contour with enhanced functionality

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13114199P 1999-04-27 1999-04-27
US60/131,141 1999-04-27
US55786500A 2000-04-24 2000-04-24
US09/557,865 2000-04-24

Publications (2)

Publication Number Publication Date
WO2000065151A1 WO2000065151A1 (en) 2000-11-02
WO2000065151A8 true WO2000065151A8 (en) 2001-07-12

Family

ID=26829173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/011071 WO2000065151A1 (en) 1999-04-27 2000-04-26 Edge wire contour with enhanced functionality

Country Status (1)

Country Link
WO (1) WO2000065151A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011718A1 (en) * 2002-07-30 2004-02-05 Finidro - Financiamentos Energéticos Lda. Installation for purifying papermaking pulp
WO2006119614A1 (en) 2005-05-09 2006-11-16 Hetu Marc-Andre Screen basket with replaceable profiled bars
CA2705475C (en) 2007-11-14 2015-05-05 Filtration Fibrewall Inc. Screen basket
CA2678839A1 (en) * 2009-09-14 2011-03-14 Gea Houle Inc. Separator with horizontal rotary screen
US8534468B2 (en) 2011-01-13 2013-09-17 Georgia-Pacific Consumer Products Lp Screen basket optimized for removal of stickies from adhesives-contaminated recyclable fiber
DE102015003020B3 (en) 2015-03-06 2016-03-03 Andritz Fiedler Gmbh bar screen basket
US11066798B2 (en) 2019-06-13 2021-07-20 Sea To Sky Energy Solutions Corp. Water intake structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3816152A1 (en) * 1987-11-14 1989-11-23 Voith Gmbh J M SCREEN BASKET AND METHOD FOR THE PRODUCTION THEREOF
DE9108129U1 (en) * 1991-07-02 1991-09-05 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Sieve element
FI100010B (en) * 1995-11-28 1997-08-15 Ahlstrom Machinery Oy The screen cylinder
US5791495A (en) * 1996-03-11 1998-08-11 Beloit Technologies, Inc. Paper pulp screen cylinder

Also Published As

Publication number Publication date
WO2000065151A1 (en) 2000-11-02

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