EP0423091A2 - Refiner for the refining of paper pulps and the like - Google Patents

Refiner for the refining of paper pulps and the like Download PDF

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Publication number
EP0423091A2
EP0423091A2 EP90850321A EP90850321A EP0423091A2 EP 0423091 A2 EP0423091 A2 EP 0423091A2 EP 90850321 A EP90850321 A EP 90850321A EP 90850321 A EP90850321 A EP 90850321A EP 0423091 A2 EP0423091 A2 EP 0423091A2
Authority
EP
European Patent Office
Prior art keywords
refiner
pulp
blades
refined
refining
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
EP90850321A
Other languages
German (de)
French (fr)
Other versions
EP0423091A3 (en
EP0423091B1 (en
Inventor
Jorma Lumiainen
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.)
Sunds Defibrator Jylha OY
Original Assignee
Sunds Defibrator Jylha OY
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 Sunds Defibrator Jylha OY filed Critical Sunds Defibrator Jylha OY
Publication of EP0423091A2 publication Critical patent/EP0423091A2/en
Publication of EP0423091A3 publication Critical patent/EP0423091A3/en
Application granted granted Critical
Publication of EP0423091B1 publication Critical patent/EP0423091B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/22—Jordans

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  • Artificial Filaments (AREA)
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  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

A refiner for the refining of paper pulps or the like, comprising oppositely placed refiner blades (2, 3), at least one of which rotates, an intake (11) for the pulp to be refined and an outlet (12) for the refined pulp. A drawback with conventional refiners is that the pulp fed into the refiner is not refined uniformly because there is no provision for selecting the pulp fractions to be refined. The invention solves this problem in that one or more of the refiner blades (2, 3) are provided with one or more top separators (6) which are at least partially conical and fixedly connected to the blades.

Description

  • The present invention relates to a refiner for the refining of paper pulps or the like, comprising oppositely placed refiner blades, at least one of which rotates, an intake for the pulp to be refined and an outlet for the refined pulp.
  • Refiners can be roughly divided into two categories: disc refiners and conical refiners. These are well known, so their construction will not be explained in detail here. An essential drawback with previously known refiners is that the pulp fed into the refiner is not refined uniformly because there is no provision for selecting the pulp fractions to be refined.
  • The object of the present invention is to achieve a refiner which is free of the drawback referred to, part of the pulp to be refined being divided into two different fractions, one of which is returned to the input and the other to the output of the refiner, or the fractions are passed out of the refiner. The refiner of the invention is characterized in that one or more of the refiner blades are provided with one or more at least partially conical, fixedly mounted top separators, and that the upper part of the cone of the top separator opens into the space between the refiner blades, so that the speed difference between the blades both feeds pulp into the top separator and produces the necessary rotary motion of the pulp in the top separator.
  • One of the advantages of the invention is that it makes it possible to choose the desired pulp fractions to be refined.
  • In the following, the invention is described in detail by referring to the attached drawings, in which
    • Fig. 1 presents a transverse cross-section through the selective refiner of the invention, illustrating the principle of its construction.
    • Fig. 2 presents a vertical cross-section through the selec­tive refiner of the invention, showing the various posi­tions where the top separator can be placed.
    • Fig. 3 presents a partial diagram representing the stator and rotor discs and the top separators mounted in conjunc­tion with them.
  • The selective refiner 1 of the invention illustrated in fig. 1 may be either a disc refiner or a conical refiner consisting of refiner blades 2, 3. At least one of the refiner blades is a rotary one, with a refining gap or zone 9 formed in the narrow space between the corresponding blade grooves 4, 5. In the embodiment illustrated by fig. 1, one of the refiner blades 2, e.g. the stator blade, is provided with a fixedly mounted conical top separator 6. The top part of the cone of the top separator opens into the space 4, 5, 9 between the refiner blades. The speed difference between the blades both feeds pulp into the top separator 6 and produces the necessary rotary motion of the pulp in the top separator. The top separator may be any type of conventional top separator provided with at least two outlets 7, 8 for different fractions. In the case of fig. 1, the lighter fraction is exhausted through the upper outlet 7 and the heavier fraction through the lower outlet 8.
  • Fig. 2 presents a conical refiner comprising refiner blades 2, 3 having the form of a truncated cone. In this case, the outer blade 2 is a stationary stator blade and the inner blade 3 is a rotating rotor blade whose axle 10 is mounted with bearings on the frame of the refiner. Moreover, the conical refiner comprises a pulp feed space 14 into which pulp is supplied mainly via the inlet 11, and an output space 13, from which the refined pulp is exhausted via the outlet 12. In fig. 2, both the stator and the rotor blades 2, 3 are provided with top separators 6 as illustrated by fig. 1. As can be seen from fig. 2, the feed opening of the top separator 6 can be placed in a desired location within the refining zone, and the top separator can be oriented in a desired direction relative to the direction of the pulp flow. The output orifices of the top separator may open inside the refiner, which is the case in fig. 2 in the case of the three uppermost top separators. Unlike these, the lowest top separator in the figure has output orifices 15, 16 opening outside the refiner.
  • The partial diagram in fig. 3 illustrates a solution which in principle is the same as in fig. 2, seen from the direc­tion of the axis of rotation of the rotor. Arrow 18 indi­cates the direction of rotation of the rotor 3.
  • It is obvious to a person skilled in the art that the in­vention is not restricted to the examples of its embodi­ments described above, but that it may instead be varied within the scope of the following claims.

Claims (1)

  1. Refiner for the refining of paper pulps or the like, comprising oppositely placed refiner blades (2, 3), at least one of which rotates, an intake (11) for the pulp to be refined and an outlet (12) for the refined pulp, characterized in that one or more of the refiner blades (2, 3) are provided with one or more at least partially conical, fixedly mounted top separators (6), and that the upper part of the cone of the top separa­tor opens into the space between the refiner blades, so that the speed difference between the blades (2, 3) both feeds pulp into the top separator (6) and produces the necessary rotary motion of the pulp in the top separator.
EP90850321A 1989-10-05 1990-10-01 Refiner for the refining of paper pulps and the like Expired - Lifetime EP0423091B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI894729A FI85882C (en) 1989-10-05 1989-10-05 RAFFINOER FOER RAFFINERING AV PAPPERSMASSOR ELLER DYLIKA.
FI894729 1989-10-05

Publications (3)

Publication Number Publication Date
EP0423091A2 true EP0423091A2 (en) 1991-04-17
EP0423091A3 EP0423091A3 (en) 1992-03-25
EP0423091B1 EP0423091B1 (en) 1994-11-30

Family

ID=8529100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850321A Expired - Lifetime EP0423091B1 (en) 1989-10-05 1990-10-01 Refiner for the refining of paper pulps and the like

Country Status (4)

Country Link
EP (1) EP0423091B1 (en)
AT (1) ATE114749T1 (en)
DE (1) DE69014547T2 (en)
FI (1) FI85882C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909241A1 (en) * 1969-02-25 1970-10-22 Hombak Maschinenfab Kg Disintegrating cellulose materials - controlling particle size range to exclude unwanted fines
FR2597127A1 (en) * 1986-04-10 1987-10-16 Kamyr Ab METHOD AND APPARATUS FOR REFINING FIBROUS MATERIAL
WO1988003189A1 (en) * 1986-10-31 1988-05-05 Sunds Defibrator Jylhä Oy Refiner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909241A1 (en) * 1969-02-25 1970-10-22 Hombak Maschinenfab Kg Disintegrating cellulose materials - controlling particle size range to exclude unwanted fines
FR2597127A1 (en) * 1986-04-10 1987-10-16 Kamyr Ab METHOD AND APPARATUS FOR REFINING FIBROUS MATERIAL
WO1988003189A1 (en) * 1986-10-31 1988-05-05 Sunds Defibrator Jylhä Oy Refiner

Also Published As

Publication number Publication date
DE69014547T2 (en) 1995-04-13
FI85882C (en) 1992-06-10
FI85882B (en) 1992-02-28
EP0423091A3 (en) 1992-03-25
EP0423091B1 (en) 1994-11-30
ATE114749T1 (en) 1994-12-15
FI894729A (en) 1991-04-06
DE69014547D1 (en) 1995-01-12
FI894729A0 (en) 1989-10-05

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