EP0187611A2 - Nachgiebiger Antrieb für die Scheiben eines Mehrscheibenraffineurs - Google Patents

Nachgiebiger Antrieb für die Scheiben eines Mehrscheibenraffineurs Download PDF

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Publication number
EP0187611A2
EP0187611A2 EP85630214A EP85630214A EP0187611A2 EP 0187611 A2 EP0187611 A2 EP 0187611A2 EP 85630214 A EP85630214 A EP 85630214A EP 85630214 A EP85630214 A EP 85630214A EP 0187611 A2 EP0187611 A2 EP 0187611A2
Authority
EP
European Patent Office
Prior art keywords
refiner
disks
rotary
housing
links
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Withdrawn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
EP85630214A
Other languages
English (en)
French (fr)
Other versions
EP0187611A3 (de
Inventor
George John Neuf
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.)
Beloit Corp
Original Assignee
Beloit 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
Application filed by Beloit Corp filed Critical Beloit Corp
Publication of EP0187611A2 publication Critical patent/EP0187611A2/de
Publication of EP0187611A3 publication Critical patent/EP0187611A3/de
Withdrawn legal-status Critical Current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
    • D21D1/303—Double disc mills

Definitions

  • the present invention is directed to a refining apparatus of the type used in the treatment of fibrous suspensions in paper making and involves a flexible link interconnection between a rotary drive means and refiner disks which provide the refining action.
  • Paper stock as it comes from beaters, digesters or other pulping machines is usually refined by passing the stock between grinding or refining surfaces which break up the fibrous materials and serve to create further separation and physical modification of the fibers.
  • a typical pulp refiner is disclosed in Thomas U.S. Patent No. 3,371,873.
  • This type of refiner includes a rotating disk which has annular refining surfaces on one or both sides.
  • the disk refining surfaces are in confronting relation with non-rotating annular grinding surfaces and provide therebetween a refining zone in which the pulp is worked.
  • the rotating disk and the refining surfaces are made of a substantially inflexible material such as cast iron or a hard stainless steel.
  • the non-rotating grinding surfaces are made of a similar material and are rigidly mounted so as to resist the torque created by the rapidly rotating disk and the pressure on the pulp material passing through the refining zone gap.
  • Axial adjustment of the refining zone gaps is effected by axial shifting of the shaft on which the disk is mounted.
  • Rigid disk refiners of this type must be manufactured and assembled to close tolerances in order to set the refining zone gap width correctly. Because the loads applied to the rigid disk are large during the refining process, a large and extremely rugged design is necessary so that the refining surface relationships do not change under load. This results in the rigid disk refiners being very costly due to the necessarily close tolerance machining, the need for large quantities of high-strength disk material, the bulky overall structure, the restrictive machine capacity, and the excessive assembly time requirements.
  • the present invention provides a refiner assembly utilizing a multiple array of disks.
  • One set of disks may be rotating and the other stationary, or both sets may be rotating in opposite directions.
  • the sets of disks are located in a housing which has an inlet and an outlet for a fiber suspension passing therethrough.
  • Drive means are provided for rotating one or both sets of disks in the housing.
  • the two sets of disks have refining surfaces which confront each other to provide a slight working gap therebetween into which the fiber suspension is passed as it goes from inlet to outlet.
  • a plurality of flexible links are provided which interconnect the drive means with the rotary refiner disks to provide rotational drive to the rotary refiner disks while accomodating some axial deflection or floating in the axial direction.
  • means are provided for pivotally connecting one end of each link to the drive means, while the opposite ends of the links are received about pivot pins so as to provide for limited pivotal movement thereabout.
  • the pivot pins extend between oppositely facing pairs of the rotary refiner disks.
  • reference numeral 10 indicates generally a multi-disk refiner of the type with which the improvements of the present invention can be employed.
  • the refiner includes a housing 11 having an inlet portion 12 and a discharge portion 13.
  • a shaft 14 is mounted for rotation within the housing 11 which is keyed to a hub 15 by means of a key 16.
  • a cover plate 17 is secured to the hub by means of bolts 18.
  • the fiber suspension In passing between the inlet 12 and the outlet 13, the fiber suspension must pass between interleaved rotor and stator refiner disks which reduce and fibrillate the fibrous materials in the suspension into smaller, discrete fibers. Illustrated in the drawings are pairs of rotor disks 20 and 21; 22 and 23; and 24 and 25.
  • the rotor disk 20 has ribs 26 which confront ribs 27 formed in an end plate 28 which is secured to the housing 11 by means of screws 29.
  • the working gap between the confronting sets of ribs is identified at reference numeral 30.
  • Refiner disk 21 has refining ribs which confront ribs formed in a stator disk 31 to provide a working gap 32 therebetween.
  • Another stator disk 33 is mechanically connected to the stator disk 31 and provides confronting ribs to the rotor disk 22, thereby providing a working gap 34 therebetween.
  • a second pair of stator disks 35 and 36 cooperate with the confronting rotor disks 23 and 24, respectively, to provide working gaps 37 and 38, respectively.
  • refiner ribs on the rotor disk 25 cooperate with a stationary end plate 39 to provide a working gap 40.
  • the stator disks are supported within the housing by means of flexible diaphragms 41 and 42 illustrated in Fig. 1. These diaphragms are composed of suitable materials such as a fiberglass laminate.
  • the ends of the membranes 41 and 42 are secured to the housing on opposite sides of a ring 43 held in place by means of double-threaded pins 44 which are securely held by nuts 45.
  • the present invention is particularly concerned with the manner in which the rotor disks are supported for rotation from the drive means while permitting some limited axial flexibility to accomodate axial deflection between the disk and the drive hub.
  • a flexible link 51 having one end received about an elongated pivot pin 52 and having its opposite end received about a shorter pivot pin 53.
  • the end of the link 51 engaging the pin 52 is received between a pair of washers 54.
  • Spacing rings 55 and 56 together with washers 57 serve to position centrally disposed flexible links 58 having their terminal ends embracing pivot pins 59.
  • the confronting faces of the refiner disks 22 and 23 are relieved as indicated at reference numeral 60 to accomodate shifting movement of the links.
  • each link may consist of several thicknesses of thin, heat-treated steel which accomodate axial deflection between the disk and the hub by bending about their flat axes, in the same manner as a flat leaf spring without exceeding the elastic limit.
  • a tensile load along the link axis transmits rotational power from the hub to the disk.
  • Fig. 3 The ability of the flexible link to accomodate a slight axial shift during operation is best illustrated in Fig. 3.
  • the link 58 is shown with an arcuate contour in a somewhat exaggerated amount to illustrate that the flexing of the links is sufficient to automatically adjust the width of the working gaps 34 and 37 to equal dimensions during the refining operation.
  • the flexible link mechanism of the present invention thus transmits rotary motion from a common drive hub to multiple concentric disks with a variable axial spacing.
  • the laminated metallic construction effectively replaces fiberglass laminates and the like which were subject to erosion by the fiber slurry surrounding the disk assembly.

Landscapes

  • Paper (AREA)
  • Crushing And Grinding (AREA)
EP85630214A 1984-12-12 1985-12-03 Nachgiebiger Antrieb für die Scheiben eines Mehrscheibenraffineurs Withdrawn EP0187611A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68096284A 1984-12-12 1984-12-12
US680962 1984-12-12

Publications (2)

Publication Number Publication Date
EP0187611A2 true EP0187611A2 (de) 1986-07-16
EP0187611A3 EP0187611A3 (de) 1986-12-30

Family

ID=24733221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85630214A Withdrawn EP0187611A3 (de) 1984-12-12 1985-12-03 Nachgiebiger Antrieb für die Scheiben eines Mehrscheibenraffineurs

Country Status (6)

Country Link
EP (1) EP0187611A3 (de)
JP (1) JPS61146895A (de)
CN (1) CN85108615A (de)
BR (1) BR8506187A (de)
ES (1) ES8700357A1 (de)
FI (1) FI854480A7 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107191561A (zh) * 2017-06-20 2017-09-22 叶选锐 一种偏心力盘

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108201924B (zh) * 2016-12-19 2019-12-10 浙江大博文鞋业有限公司 一种带有双旋转磨盘的物料粉碎机构

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH168155A (de) * 1932-02-27 1934-03-31 Reisten Werner Mahlvorrichtung für Papierstoff.
US3371873A (en) * 1966-03-24 1968-03-05 Keith V. Thomas Refining apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107191561A (zh) * 2017-06-20 2017-09-22 叶选锐 一种偏心力盘

Also Published As

Publication number Publication date
CN85108615A (zh) 1986-06-10
FI854480A0 (fi) 1985-11-14
EP0187611A3 (de) 1986-12-30
ES549824A0 (es) 1986-10-01
BR8506187A (pt) 1986-08-26
ES8700357A1 (es) 1986-10-01
FI854480L (fi) 1986-06-13
JPS61146895A (ja) 1986-07-04
FI854480A7 (fi) 1986-06-13

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Inventor name: NEUF, GEORGE JOHN