US3260469A - Discs for apparatuses for refining paper pulp - Google Patents

Discs for apparatuses for refining paper pulp Download PDF

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Publication number
US3260469A
US3260469A US322873A US32287363A US3260469A US 3260469 A US3260469 A US 3260469A US 322873 A US322873 A US 322873A US 32287363 A US32287363 A US 32287363A US 3260469 A US3260469 A US 3260469A
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US
United States
Prior art keywords
discs
disc
grooves
steps
ribs
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.)
Expired - Lifetime
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US322873A
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English (en)
Inventor
Perdreau Gustave Marie Georges
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Individual
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Individual
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Publication date
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Publication of US3260469A publication Critical patent/US3260469A/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs
    • B02C7/13—Shape or construction of discs for grain mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam

Definitions

  • the present invention relates to discs for paper pulp refining apparatuses, arranged in pairs, one of them being fixed, while the other is movable.
  • two superimposed or juxtaposed discs one of which forms the stator while the other one forms the rotor, are provided with grooves tangentially radiating, with serrated profiles and progressive width, and able to operate on a vertical or horizontal plane.
  • FIGURE 1 is a sectional view of two superimposed or juxtaposed discs 1 and 2 (which, for purposes of a better understanding are shown in spaced relationship to each other, whereas they are actually engaging each other when in working condition.
  • the disc or stator 1 is fixed in a cylindrical housing 3 and comprises grooves 4, with a serrated profile 5 and sharp edges, the bottoms of the grooves forming a conical surface.
  • the disc or rotor 2 is held by means of a key 6 keyed to a revolving shaft 7.
  • Disc 2 has grooves 8, similar to those of stator 2 with a serrated profile 9, meshing with serrated profile 5.
  • the upper face of disc or rotor 2 is slightly concave.
  • FIGURE 2 is a plan view of the lower face of the disc or stator 1. This view shows the position of the grooves 4 which radiate tangentially in a concentric circle shape of given dimension. It also shows how grooves 4 increase in width in the direction toward the outside.
  • FIGURE 3 is a plan view of the upper face of the rotary disc or rotor 2. Similar to FIG. 2, this view shows the same radiating and tangential position of the grooves 8, as well as the progressive increase of their width, in the direction from the centre of the disc towards the outer periphery thereof.
  • a single pair of discs (rotor and stator) can be mounted in a simplified apparatus.
  • the discs, arranged in successive pairs, can be mounted in series of variable number (with the requisite spacing), by superimposition on a vertical shaft or by juxtaposition on a horizontal shaft.
  • the diameter of the discs 1 and 2 may vary more or less; the material utilized, the number and dimension of the teeth 5 and 9, as well as the number and dimension of the grooves 4 and 8 can be varied without affecting the principle utilized.
  • the improvements realized by the invention are very important, especially in view of the fact that the pulp under treatment necessarily passes through the air-gap between the two discs a large number of times in a minimum period of time, by the action of the successive opening and closing of the pockets formed by the cut of the profiles of the grooves in serrations and by the rotary movement of the rotor disc.
  • part of the pulp can travel in the bottom of the grooves up to the exit, without ever passing through the air-gap.
  • the invention enables appreciable economies to be effected in time and power, as compared with existing apparatuses, and can ensure outputs, from the smallest to the greatest, without losing any of its inherent qualities.
  • a disc structure for paper pulp refining machines comprising a stator disc and a rotor disc, said discs having opposed faces, each face having grooves extending outwardly from a central portion toward the periphery, the bottoms of said grooves in said two discs forming parallel substantially conical surfaces, each disc having notches ribs intermediate said grooves to form angular steps in said ribs, the notches and steps in said discs being complementary and said discs being mounted with the steps and notches of the rotor disc rotatably interfitting the notches and steps, respectively, of the ribs of the stator disc.
  • a disk structure for paper pulp refining machines comprising a stator disc and a rotor disc, said rotor disc having a hub portion mounted on a rotating shaft and ribs and grooves extending outwardly from said hub portion to the periphery, the bottoms of said grooves forming a conical surface and the ribs intermediate said grooves being notched to form projecting steps, said stator disc having ribs and grooves extending outwardly from a central aperture, the bottoms of said grooves forming a conical surface complementary to the conical surface on said rotor, the ribs intermediate the grooves on said stator disc being notched to form projecting steps complementary to the notched ribs on said rotor disc, so that the steps on the ribs of the rotor disc rotate in the notches between the steps of the stator disc.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Crushing And Grinding (AREA)
US322873A 1963-04-30 1963-11-12 Discs for apparatuses for refining paper pulp Expired - Lifetime US3260469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1942A FR1354061A (fr) 1963-04-30 1963-04-30 Disques pour appareils de raffinage de pâte à papier

Publications (1)

Publication Number Publication Date
US3260469A true US3260469A (en) 1966-07-12

Family

ID=8568192

Family Applications (1)

Application Number Title Priority Date Filing Date
US322873A Expired - Lifetime US3260469A (en) 1963-04-30 1963-11-12 Discs for apparatuses for refining paper pulp

Country Status (6)

Country Link
US (1) US3260469A (xx)
BE (1) BE634832A (xx)
ES (1) ES290006A1 (xx)
FR (1) FR1354061A (xx)
GB (1) GB1035840A (xx)
SE (1) SE303673B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119995A (en) * 1990-11-20 1992-06-09 Andritz Sprout-Bauer, Inc. Keyway for refiner disc
US6196284B1 (en) 1994-03-07 2001-03-06 Dana Lequin Wood pulverizer with improved grates and grate components
US6334584B1 (en) 2000-06-09 2002-01-01 Gabriel International Group Centrifugal fine grinding apparatus
US20150352601A1 (en) * 2013-01-16 2015-12-10 Cvp Clean Value Plastics Gmbh Device and method for removing impurities from shredded plastic
DE102013000592B4 (de) 2013-01-16 2022-10-13 Cvp Clean Value Plastics Gmbh Verfahren zum Entfernen von Verunreinigungen auf Kunststoffschnipseln

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI40261B (xx) * 1965-12-09 1968-07-31 Tampella Oy Ab

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208716A (en) * 1878-10-08 Improvement in millstone-dresses
US2519198A (en) * 1944-11-18 1950-08-15 Sanford E Richeson Coffee grinding machine
DE946612C (de) * 1954-08-26 1956-08-02 Bergwerksverband Zur Verwertun Verfahren und Vorrichtung zur Umbenetzung von wasserbenetzten Feststoffteilchen
US2936128A (en) * 1955-12-08 1960-05-10 Bidwell Howard Apparatus for the treatment of paper stock
US2950872A (en) * 1956-07-09 1960-08-30 Saito Tomizo Grinding disc for grinding mills

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208716A (en) * 1878-10-08 Improvement in millstone-dresses
US2519198A (en) * 1944-11-18 1950-08-15 Sanford E Richeson Coffee grinding machine
DE946612C (de) * 1954-08-26 1956-08-02 Bergwerksverband Zur Verwertun Verfahren und Vorrichtung zur Umbenetzung von wasserbenetzten Feststoffteilchen
US2936128A (en) * 1955-12-08 1960-05-10 Bidwell Howard Apparatus for the treatment of paper stock
US2950872A (en) * 1956-07-09 1960-08-30 Saito Tomizo Grinding disc for grinding mills

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119995A (en) * 1990-11-20 1992-06-09 Andritz Sprout-Bauer, Inc. Keyway for refiner disc
US6196284B1 (en) 1994-03-07 2001-03-06 Dana Lequin Wood pulverizer with improved grates and grate components
US6334584B1 (en) 2000-06-09 2002-01-01 Gabriel International Group Centrifugal fine grinding apparatus
US20150352601A1 (en) * 2013-01-16 2015-12-10 Cvp Clean Value Plastics Gmbh Device and method for removing impurities from shredded plastic
US10058898B2 (en) * 2013-01-16 2018-08-28 Cvp Clean Value Plastics Gmbh Device and method for removing impurities from shredded plastic
DE102013000592B4 (de) 2013-01-16 2022-10-13 Cvp Clean Value Plastics Gmbh Verfahren zum Entfernen von Verunreinigungen auf Kunststoffschnipseln

Also Published As

Publication number Publication date
FR1354061A (fr) 1964-02-28
GB1035840A (en) 1966-07-13
ES290006A1 (es) 1963-10-16
SE303673B (xx) 1968-09-02
BE634832A (xx) 1963-11-16

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