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EP0331883A3 - Pressure knotter screening apparatus - Google Patents

Pressure knotter screening apparatus Download PDF

Info

Publication number
EP0331883A3
EP0331883A3 EP19890100830 EP89100830A EP0331883A3 EP 0331883 A3 EP0331883 A3 EP 0331883A3 EP 19890100830 EP19890100830 EP 19890100830 EP 89100830 A EP89100830 A EP 89100830A EP 0331883 A3 EP0331883 A3 EP 0331883A3
Authority
EP
European Patent Office
Prior art keywords
section
sieve
wing
length
rotor
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
EP19890100830
Other languages
German (de)
French (fr)
Other versions
EP0331883B1 (en
EP0331883A2 (en
Inventor
Ernest J. Charette
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.)
Sulzer Escher Wyss GmbH
Original Assignee
Sulzer Escher Wyss GmbH
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 Sulzer Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Priority to AT89100830T priority Critical patent/ATE104002T1/en
Publication of EP0331883A2 publication Critical patent/EP0331883A2/en
Publication of EP0331883A3 publication Critical patent/EP0331883A3/en
Application granted granted Critical
Publication of EP0331883B1 publication Critical patent/EP0331883B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Innerhalb eines zylindrischen Sortierers ist ein Rotor konzentrisch angeordnet. Der Rotor trägt eine Vielzahl von Flügel in unmittelbarer Nähe des Siebes, um hydrodynamische Impulse entgegen dem Flüssigkeitsstrom zu erzeugen, die das Sieb räumen. Jeder Flügel umfaßt einen ersten an den Rotor befestigten Abschnitt; dieser erste Abschnitt hat eine schräge Fläche und eine sich im wesentlichen radial ausdehnende Fläche. Ein zweiter Abschnitt des Flügels ist abnehmbar an der sich radial ausdehnenden Fläche des ersten Abschnitts befestigt. Der abnehmbare zweite Abschnitt erstreckt sich radial über den ersten Abschnitt hinaus. Wenn der abnehmbare Abschnitt sich durch längeren Gebrauch abgenutzt hat, kann er entfernt und durch einen neuen zweiten Abschnitt ersetzt werden. In einer bevorzugten Ausführung ist die Stärke des zweiten Abschnitts des Flügels gleich oder größer als der Lochdurchmesser im Sieb. Es wird auch vorgezogen, daß die Länge des zweiten Flügelabschnitts, der sich über den ersten Abschnitt hinaus erstreckt, großer ist als der Lochdurchmesser im Sieb. In dieser Ausführung sollte die Länge des Vorsprungs der schrägen Flache des ersten Abschnitts größer als die Länge der sich radial ausdehnenden Fläche sein. A rotor is arranged concentrically within a cylindrical sorter. The rotor carries a variety of wings in close proximity to the sieve to be hydrodynamic Generate impulses against the liquid flow that clear the sieve. Every wing includes a first portion attached to the rotor; this first section has one sloping surface and a substantially radially expanding surface. A second Section of the wing is removable on the radially expanding surface of the first Section attached. The removable second section extends radially across the first section beyond. If the detachable section becomes worn through prolonged use worn, it can be removed and replaced with a new second section. In a preferred embodiment, the thickness of the second section of the wing is the same or larger than the hole diameter in the sieve. It is also preferred that the length of the second wing section, which extends beyond the first section, is larger than the hole diameter in the sieve. In this version, the length of the protrusion the sloping surface of the first section is greater than the length of the radial expansive area.

EP89100830A 1988-03-07 1989-01-19 Pressure knotter screening apparatus Expired - Lifetime EP0331883B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100830T ATE104002T1 (en) 1988-03-07 1989-01-19 PRESSURE KNOT TAPER SORTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16478788A 1988-03-07 1988-03-07
US164787 2002-06-06

Publications (3)

Publication Number Publication Date
EP0331883A2 EP0331883A2 (en) 1989-09-13
EP0331883A3 true EP0331883A3 (en) 1991-06-12
EP0331883B1 EP0331883B1 (en) 1994-04-06

Family

ID=22596090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100830A Expired - Lifetime EP0331883B1 (en) 1988-03-07 1989-01-19 Pressure knotter screening apparatus

Country Status (5)

Country Link
EP (1) EP0331883B1 (en)
AT (1) ATE104002T1 (en)
CA (1) CA1321551C (en)
DE (1) DE58907372D1 (en)
FI (1) FI93870C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543259C (en) * 1929-05-09 1932-02-03 Kamyr Ab Horizontal centrifugal separator for cellulose, paper pulp or the like.
US4200537A (en) * 1977-11-23 1980-04-29 E. Et M. Lamort Apparatus for the purification of paper pulp
WO1986007105A1 (en) * 1985-05-29 1986-12-04 A. Ahlstrom Corporation A rotating element for a screening apparatus with a contour surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543259C (en) * 1929-05-09 1932-02-03 Kamyr Ab Horizontal centrifugal separator for cellulose, paper pulp or the like.
US4200537A (en) * 1977-11-23 1980-04-29 E. Et M. Lamort Apparatus for the purification of paper pulp
WO1986007105A1 (en) * 1985-05-29 1986-12-04 A. Ahlstrom Corporation A rotating element for a screening apparatus with a contour surface

Also Published As

Publication number Publication date
ATE104002T1 (en) 1994-04-15
EP0331883B1 (en) 1994-04-06
CA1321551C (en) 1993-08-24
EP0331883A2 (en) 1989-09-13
FI93870B (en) 1995-02-28
FI93870C (en) 1995-06-12
FI890811A7 (en) 1989-09-08
DE58907372D1 (en) 1994-05-11
FI890811A0 (en) 1989-02-20

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