DE3866116D1 - METHOD AND DEVICE FOR SEPARATING NODES. - Google Patents

METHOD AND DEVICE FOR SEPARATING NODES.

Info

Publication number
DE3866116D1
DE3866116D1 DE8888100678T DE3866116T DE3866116D1 DE 3866116 D1 DE3866116 D1 DE 3866116D1 DE 8888100678 T DE8888100678 T DE 8888100678T DE 3866116 T DE3866116 T DE 3866116T DE 3866116 D1 DE3866116 D1 DE 3866116D1
Authority
DE
Germany
Prior art keywords
connections
rotation
cylinder
separating
pulp
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.)
Revoked
Application number
DE8888100678T
Other languages
German (de)
Inventor
Kaj Henricson
Erkki Repo
Hannu Roenkoenharju
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.)
Ahlstrom Corp
Original Assignee
Ahlstrom Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8523793&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3866116(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ahlstrom Corp filed Critical Ahlstrom Corp
Application granted granted Critical
Publication of DE3866116D1 publication Critical patent/DE3866116D1/en
Anticipated expiration legal-status Critical
Revoked 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
    • D21D5/06—Rotary screen-drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

The invention relates to a method and apparatus for separating knots. In particular the method and the apparatus are meant to be used in separating knots from fibre suspensions of the wood processing industry. The knotter according to the invention uses a profiled screen cylinder (5) with which it has been found from performed tests to be most preferable to feed the pulp from the connections (2) in the direction of rotation of the screen cylinder and also to discharge the reject from the connections (4) and the accept from the connections (3) of the cylinder (5) in the direction of rotation. As a result, there is not only less wear of the screen surface, but also a significantly smaller consumption of power per pulp ton than in the apparatuses in accordance with the prior art.
DE8888100678T 1987-01-19 1988-01-19 METHOD AND DEVICE FOR SEPARATING NODES. Revoked DE3866116D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI870190A FI76139C (en) 1987-01-19 1987-01-19 Twigs separation method and apparatus

Publications (1)

Publication Number Publication Date
DE3866116D1 true DE3866116D1 (en) 1991-12-19

Family

ID=8523793

Family Applications (2)

Application Number Title Priority Date Filing Date
DE198888100678T Pending DE275967T1 (en) 1987-01-19 1988-01-19 METHOD AND DEVICE FOR SEPARATING NODES.
DE8888100678T Revoked DE3866116D1 (en) 1987-01-19 1988-01-19 METHOD AND DEVICE FOR SEPARATING NODES.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE198888100678T Pending DE275967T1 (en) 1987-01-19 1988-01-19 METHOD AND DEVICE FOR SEPARATING NODES.

Country Status (6)

Country Link
EP (1) EP0275967B1 (en)
JP (2) JPH0696834B2 (en)
AT (1) ATE69472T1 (en)
CA (1) CA1329333C (en)
DE (2) DE275967T1 (en)
FI (1) FI76139C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308225C1 (en) * 1993-03-16 1994-11-24 Escher Wyss Gmbh Process for sorting fiber suspension and screening device for carrying it out
SE515589C2 (en) * 1999-03-10 2001-09-03 Valmet Fibertech Ab Screening device for separating fiber suspensions, and stator for use in the screening device
US6254729B1 (en) 1999-03-22 2001-07-03 Voith Sulzer Paper Technology North America, Inc. Pulper with extraction plate assembly having removable inserts and method of manufacturing same
JP4909693B2 (en) * 2006-07-24 2012-04-04 相川鉄工株式会社 Screen device
FI20095769A (en) * 2009-07-07 2011-01-08 Andritz Oy Apparatus for handling a fiber suspension

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH182068A (en) * 1935-03-21 1936-01-31 Miag Muehlenbau & Ind Ag Classifier for fiber-containing goods, in particular for paper making materials.
SE315479B (en) * 1963-10-21 1969-09-29 Knutsilplatar Malm N Ab
US3363759A (en) * 1964-04-29 1968-01-16 Bird Machine Co Screening apparatus with rotary pulsing member
DE1905832U (en) * 1964-09-16 1964-12-03 Hermann Finckh G M B H SECURE FOR PAPER FABRIC SUSPENSIONS.
SE316363B (en) 1966-12-01 1969-10-20 Karlstad Mekaniska Ab
SE374148B (en) * 1972-08-31 1975-02-24 S E E Ahlfors
US3947314A (en) 1974-04-29 1976-03-30 The Black Clawson Company Method of treating paper fibers in a stationary screen
US4017387A (en) * 1975-08-11 1977-04-12 The Black Clawson Company Screening apparatus
SE427124B (en) 1980-01-28 1983-03-07 Celleco Ab DEVICE FOR FILING OF FIBER PASS PENSIONS
SE426958B (en) * 1980-02-25 1983-02-21 Celleco Ab SEPARATOR FOR DIVISION OF AN INCOMING MIXTURE OF CELLULOSA SUSPENSION OR SIMILAR AND GROUND HEAVY PARTICLES
WO1986003688A1 (en) * 1984-12-25 1986-07-03 Mitsubishi Jukogyo Kabushiki Kaisha Pressure slit screen
JPS61207069A (en) * 1985-03-12 1986-09-13 Nec Corp Semiconductor device
JPS61207689A (en) * 1985-03-12 1986-09-16 三菱重工業株式会社 Screening apparatus
JPS61207690A (en) * 1985-03-12 1986-09-16 三菱重工業株式会社 Screening apparatus

Also Published As

Publication number Publication date
EP0275967A2 (en) 1988-07-27
DE275967T1 (en) 1989-06-01
JPH0533280A (en) 1993-02-09
FI76139B (en) 1988-05-31
FI870190A0 (en) 1987-01-19
EP0275967B1 (en) 1991-11-13
FI76139C (en) 1988-09-09
JPH0696834B2 (en) 1994-11-30
CA1329333C (en) 1994-05-10
EP0275967A3 (en) 1989-02-08
JPS63249792A (en) 1988-10-17
ATE69472T1 (en) 1991-11-15

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation