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US2660934A - Means for defibrating and grinding paper pulp or other fibrous material - Google Patents

Means for defibrating and grinding paper pulp or other fibrous material Download PDF

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Publication number
US2660934A
US2660934A US39133A US3913348A US2660934A US 2660934 A US2660934 A US 2660934A US 39133 A US39133 A US 39133A US 3913348 A US3913348 A US 3913348A US 2660934 A US2660934 A US 2660934A
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US
United States
Prior art keywords
roller
knives
pulp
grinding
defibrating
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
Application number
US39133A
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English (en)
Inventor
Laviste Cornelius
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.)
Individual
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Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2660934A publication Critical patent/US2660934A/en
Anticipated expiration legal-status Critical
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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
    • D21D1/22—Jordans

Definitions

  • Fig. 1 is avertical longitudinalsection through the device according to the one" embodiment.
  • Fig. 2 is a cross section on the line 22, 1.
  • Fig. 3 is a vertical longitudinal section through the device according to the second embodiment.
  • Fig. 4 is a cross section on the line 4-4, Fig. 3.
  • a preferably conical roller 2 is rotatably mounted in a container I, the shell or. envelope surface 3 of' the said conical roller being non-perforated, i. e. it has no through-openings.
  • the roller 2 which is fixed on a rotatably mounted shaft 5 bymeans of a sleeve 4, is on its surface 3 pro vided with a number of longitudinal knife-shaped defibrating and grinding members suitably spaced over the entire periphery.
  • the sleeve 4' is connected with the shell 30f the roller 2 by means of a number of radial arms I.
  • the shaft 5 has a tight fit in the end Walls of the roller 2' as indicatedat 5a and extends through packing boxes 51) in the end walls of the container I.
  • the knives 6 operate against a number of longitudinal non-rotatable defibrating and grinding members in the form of knives8.
  • the knives 8 arearranged in such a manner that open throughmassagesflare formed between 3 Claims. (CI'. 92-26) them, the pulp treated by means of the knives 6 and 8 being led off through the said passages to a chamber II) located outside the knives and. communicating with the-outlet II.
  • the knives 8- are carried and retained in their proper positions'by means of a number'of suitably spaced rings, i. e., connecting members, I2 fixed to the container I.
  • the knives 8 surround the periphery ofthe roller 2 except at that point where the pulp inlet I 3" provided at the top, is situated. Consequently, the knives8. surround the greatest part of the periphery of the roller 2.
  • the shaft 5 is adapted to be'actuated bymeans of a known adjusting device I 4 by meansof which the shaft and thus also the roller 2 can be displaced in the longitudinal direction so that the distance between the rotatable knives 6" and the non-rotatable knives 8 cooperating with the knives 6 can be changed for controlling the grinding pressure;
  • the pulp issupplied through the inlet I3 and will, by virtue of' its'weight, fill the spaces between the knives IS: on the roller 2.
  • the supplied pulp is subjected to an intensive treatment by the knives 6 coopcrating with the non-rotatable knives 8 so thatan efiective defibration and grinding of the pulp is obtained. Due to the centrifugal force, the pulp introduced into the spaces between the knives 8 will at the rotation of the roller .2 be thrown outwardly towards the non-rotatable knives 8.
  • the treated pulp is forced by the centrifugal force to pass through thepassagesbetween the knives 8 about radially outwards to the chamber III from where it isconveyed to the outlet I I.
  • the treatment can also; if desired, take place discontinuously, in which case the pulp which has passed through the device, is ina known manner conveyed-back to the inlet of the device for new treatment.
  • the centrifugal force of the rotating roller is utilized to continuously feed the pulp between the rotating and the nonrotating knives, and to force the ground pulp to pass between the last-mentioned knives and to leave the grinding zone.
  • the roller may have a much greater speed of rotation than the roller in the previously known grinding devices of this type, and consequently, the grinding capacity is correspondingly increased. According as desired, free or greasy pulp may be produced.
  • the embodiment according to Figs. 3 differs from the construction previously described substantially in the provision of two inlets l3, one at each end of the rotatable roller 2, through which inlets the pulp is introduced into the interior of the roller, and in that the said roller is formed of the suitably spaced knives 6, which are not, as in the embodiment according to Figs. 1 and 2, arranged on a nonperforated shell, but are carried and retained in their positions by rotatable connecting members l5, so that passages l6 extending through the knives 6 are formed between the interior of the roller formed by the knives 6 and by the non-rotatable knives 8.
  • the pulp introduced into the interior of the roller can thus pass through the passages It to the non-rotatable knives 8 at the rotation of the roller.
  • the non-rotatable knives 8 according to Figs. 3 and 4 surround the entire periphery of the rotatable roller 2.
  • the knives 8 are carried and retained by connecting members [2 fixed to the container I, just as in the embodiment according to Figs. 1 and 2.
  • the previously mentioned rotatable connecting members 15 are connected with the sleeve 4 by means of arms H, the said sleeve being fixed on the rotatably mounted shaft 5 which, also in this embodiment, is adapted to be actuated by an adjusting device l4. As shown in Fig.
  • the inlets l3 may be formed to two passages I8 which open into the rotatable roller 2, one on each side of the shaft 5 (Fig. 4).
  • the device according to the embodimentnow described has the same advantages as the device according to the embodiment shown in Figs. 1 and 2. However, the grinding capacity and effect are still greater than in the last-mentioned embodiment because the non-rotatable knives 8 according to Figs. 3 and 4 surround the entire periphery of the rotatable roller. In the embodiment according to Figs. 3 and 4 the centrifugal force of the rotatable roller is utilized much better than in the embodiment first de-' scribed because the pulp supplied to the interior of the roller 2 in the embodiment according to Figs.
  • Apparatus for defibrating and grinding paper pulp or other fibrous material comprising a container, an open-ended rotatable roller disposed within the container, said roller having a peripheral working face comprised of a plurality of longitudinally extending, spaced, defibrating and grinding knives arranged close to each other and having end and intermediate connecting members between the knives making the working face of the roller into a rigid slotted unit, said knives defining radial through-passages, interrupted by said connecting members between the knives, for the radially outward fiow of pulp from the interior of the roller, means for rotating the roller, a plurality of longitudinally extending, spaced, stationary defibrating and grinding knives mounted within the container and spaced from the walls thereof, said stationary knives being arranged close to each other and having end and intermediate connecting members between the knives to form a stationary, rigid, hollow slotted body said slotted body defining with said container wall an annular outlet space about said hollow slotted body, said roller being arranged within the slotted body thus provided, the edges of the

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US39133A 1947-07-18 1948-07-16 Means for defibrating and grinding paper pulp or other fibrous material Expired - Lifetime US2660934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE660447A SE134912C1 (xx) 1947-07-18 1947-07-18

Publications (1)

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US2660934A true US2660934A (en) 1953-12-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685826A (en) * 1950-04-03 1954-08-10 Andrew R Black Fiber treating machine
US2741954A (en) * 1954-01-20 1956-04-17 Black Clawson Co Refining paper pulp
US8646708B2 (en) 2009-07-03 2014-02-11 Metso Paper, Inc. Refiner with flow guide inside rotor or stator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459186B (sv) * 1986-08-07 1989-06-12 Sunds Defibrator Anordning foer behandling av fibersuspensioner genom silning och mekanisk bearbetning

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460A (en) * 1837-11-04 Machine foe sep abating- gaelic from geain
US31321A (en) * 1861-02-05 Mill for grinding paper-pulp
GB190312975A (en) * 1903-06-09 1904-05-19 William Hay Caldwell Improvements in and Apparatus for the Beating or Grinding of Fibrous and other Materials.
US908801A (en) * 1906-11-27 1909-01-05 Theodore Ponsar Alfalfa-grinder.
US1483742A (en) * 1922-01-12 1924-02-12 William Douglas & Sons Ltd Method and means for the treatment of fats and oils
DE508356C (de) * 1930-09-27 August Aeldert Maschine zum Reinigen von Altpapier, Lumpen und aehnlichen Guetern
US1807197A (en) * 1928-06-05 1931-05-26 Bossert Corp Hammer mill
US1905161A (en) * 1932-04-26 1933-04-25 Sturtevant Mill Co Method of and apparatus for hydrating cellulose pulp
US1939747A (en) * 1933-06-29 1933-12-19 John A Wiener Fiber-stock refiner
US1949534A (en) * 1933-05-08 1934-03-06 Sturtevant Mill Co Method of and apparatus for hydrating cellulose pulp
US2047808A (en) * 1935-02-06 1936-07-14 Edward J Trimbey Liquid pulp screen
US2105759A (en) * 1933-12-19 1938-01-18 Jeffrey Mfg Co Reducing apparatus
US2207931A (en) * 1937-12-06 1940-07-16 Morden Machines Company Fibrous material refining engine
US2344047A (en) * 1941-05-27 1944-03-14 Harmer R Lutz Pulp machine
US2461720A (en) * 1944-07-29 1949-02-15 Patterson Foundry & Machine Co Mixing apparatus

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460A (en) * 1837-11-04 Machine foe sep abating- gaelic from geain
US31321A (en) * 1861-02-05 Mill for grinding paper-pulp
DE508356C (de) * 1930-09-27 August Aeldert Maschine zum Reinigen von Altpapier, Lumpen und aehnlichen Guetern
GB190312975A (en) * 1903-06-09 1904-05-19 William Hay Caldwell Improvements in and Apparatus for the Beating or Grinding of Fibrous and other Materials.
US908801A (en) * 1906-11-27 1909-01-05 Theodore Ponsar Alfalfa-grinder.
US1483742A (en) * 1922-01-12 1924-02-12 William Douglas & Sons Ltd Method and means for the treatment of fats and oils
US1807197A (en) * 1928-06-05 1931-05-26 Bossert Corp Hammer mill
US1905161A (en) * 1932-04-26 1933-04-25 Sturtevant Mill Co Method of and apparatus for hydrating cellulose pulp
US1949534A (en) * 1933-05-08 1934-03-06 Sturtevant Mill Co Method of and apparatus for hydrating cellulose pulp
US1939747A (en) * 1933-06-29 1933-12-19 John A Wiener Fiber-stock refiner
US2105759A (en) * 1933-12-19 1938-01-18 Jeffrey Mfg Co Reducing apparatus
US2047808A (en) * 1935-02-06 1936-07-14 Edward J Trimbey Liquid pulp screen
US2207931A (en) * 1937-12-06 1940-07-16 Morden Machines Company Fibrous material refining engine
US2344047A (en) * 1941-05-27 1944-03-14 Harmer R Lutz Pulp machine
US2461720A (en) * 1944-07-29 1949-02-15 Patterson Foundry & Machine Co Mixing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685826A (en) * 1950-04-03 1954-08-10 Andrew R Black Fiber treating machine
US2741954A (en) * 1954-01-20 1956-04-17 Black Clawson Co Refining paper pulp
US8646708B2 (en) 2009-07-03 2014-02-11 Metso Paper, Inc. Refiner with flow guide inside rotor or stator

Also Published As

Publication number Publication date
SE134912C1 (xx) 1952-03-18

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