EP0197731A3 - Apparatus and method for thickening pulp and paper stock - Google Patents

Apparatus and method for thickening pulp and paper stock Download PDF

Info

Publication number
EP0197731A3
EP0197731A3 EP86302337A EP86302337A EP0197731A3 EP 0197731 A3 EP0197731 A3 EP 0197731A3 EP 86302337 A EP86302337 A EP 86302337A EP 86302337 A EP86302337 A EP 86302337A EP 0197731 A3 EP0197731 A3 EP 0197731A3
Authority
EP
European Patent Office
Prior art keywords
wires
pulp
wire
headbox
wrap
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.)
Withdrawn
Application number
EP86302337A
Other languages
German (de)
French (fr)
Other versions
EP0197731A2 (en
Inventor
Michael F. Kinne
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.)
Black Clawson Co
Original Assignee
Black Clawson Co
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 Black Clawson Co filed Critical Black Clawson Co
Publication of EP0197731A2 publication Critical patent/EP0197731A2/en
Publication of EP0197731A3 publication Critical patent/EP0197731A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • B30B9/246—The material being conveyed around a drum between pressing bands
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Apparatus for thickening a suspension of paper making pulp in water employs a pair of endless perforate belts (30, 31), referred to as wires since they are like paper machine forming wires - one inside the other - which at the inlet end of the apparatus are trained around two spaced rolls (23, 25) from which they converge to wrap a third rill (20) and thereby define a generally V-shaped horizontally extending space into which the stock to be thickened is delivered by a headbox (50) positioned between the two wires. The result­ ing sandwich of wire-pulp-wire is then caused to wrap the major portion of the third roll (20) so that it reverses its direction and then travels around additional rolls (33, 23) until it completes the major part of a loop, during which travel, drainage through the outside wire (31) takes place. When the sandwich reaches this position, the wires separate, pass in diverging relation above and below a trough (60) in which the thickened pulp is collected, above and below the headbox (50), and then reconverge to continue the opera­ tion.
EP86302337A 1985-03-29 1986-03-27 Apparatus and method for thickening pulp and paper stock Withdrawn EP0197731A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71775785A 1985-03-29 1985-03-29
US717757 1985-03-29

Publications (2)

Publication Number Publication Date
EP0197731A2 EP0197731A2 (en) 1986-10-15
EP0197731A3 true EP0197731A3 (en) 1988-07-06

Family

ID=24883347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86302337A Withdrawn EP0197731A3 (en) 1985-03-29 1986-03-27 Apparatus and method for thickening pulp and paper stock

Country Status (2)

Country Link
EP (1) EP0197731A3 (en)
JP (1) JPS61258091A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722793A (en) * 1986-07-03 1988-02-02 The Black Clawson Company Apparatus and method for thickening pulp and paper stock
DE3926440A1 (en) * 1989-08-10 1991-02-14 Voith Gmbh J M DRAINAGE DEVICE, IN PARTICULAR BAND PRESSURE FILTERS
AT402370B (en) * 1991-06-13 1997-04-25 Andritz Patentverwaltung DOUBLE SCREEN DRAINAGE DEVICE
AT396554B (en) * 1992-03-23 1993-10-25 Valentin Stossier Ohg DEVICE FOR EXPRESSING LIQUID

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT325938B (en) * 1972-05-05 1975-11-10 Nordstjernan Rederi Ab DRAINAGE MACHINE FOR FIBER SUSPENSIONS OR DGL.
DE3005681A1 (en) * 1980-02-06 1981-08-13 Escher Wyss Gmbh, 7980 Ravensburg SCREENING MACHINE
DE3020119A1 (en) * 1980-05-27 1981-12-10 Envirotech Corp., Menlo Park, Calif. Washing machine for fibrous material, e.g. paper pulp - provides vacuum filtration, and eliminates re-grinding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT325938B (en) * 1972-05-05 1975-11-10 Nordstjernan Rederi Ab DRAINAGE MACHINE FOR FIBER SUSPENSIONS OR DGL.
DE3005681A1 (en) * 1980-02-06 1981-08-13 Escher Wyss Gmbh, 7980 Ravensburg SCREENING MACHINE
DE3020119A1 (en) * 1980-05-27 1981-12-10 Envirotech Corp., Menlo Park, Calif. Washing machine for fibrous material, e.g. paper pulp - provides vacuum filtration, and eliminates re-grinding

Also Published As

Publication number Publication date
JPS61258091A (en) 1986-11-15
EP0197731A2 (en) 1986-10-15

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Effective date: 19880401

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Inventor name: KINNE, MICHAEL F.