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Publication numberUS2654295 A
Publication typeGrant
Publication dateOct 6, 1953
Filing dateMay 2, 1951
Priority dateMay 2, 1951
Publication numberUS 2654295 A, US 2654295A, US-A-2654295, US2654295 A, US2654295A
InventorsSutherland Lionel M
Original AssigneeSutherland Refiner Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Refiner apparatus
US 2654295 A
Abstract  available in
Images(4)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 6, 1953 M. SUTHERLAND REFINER APPARATUS 4 Sheets-Sheet l Filed May 2, 1951 INVENTOR: JEZ/Zerlwzzd ATTORNEYS.

Oct. 6, 1953 M. SUTHERLAND 4 Sheets-Sheet 2 Filed May 2, 1951 INVENTOR: LL sum/mam,

A TTORNEYS.

Patented ca. 6, 1953 Lionel M. Sutherland,

to Sutherlandv Refin N. J acorporation of New Jersey Morrisville, Pa., assignorv Corporation, Trenton,

Application May 2, 1951, Serial No. 224,121, 7 Glaims. (Cl. 92=26) wins-invention relates to-refinerapparatus, and more specifically relates to apparatus including a painof opposed coacting relativelyrevolving re-- fining membersforrefining pulp stock. The in.- vention further concerns pulp refiningdiscs of a character intendedfor incorporation in fiber pulp refining machines such as. the apparatus represented in- U: S. 'Patents Nos. 2,035,994, 2;l56;320 and 2,156',321', forexample.

The machines andrefiner. discs disclosed in the foregoing patents are capable of producing high quality pulpwith low power consumption, and have enjoyed. considerable commercial success. Imsuch machines the-discs have been provided withradially extending grooves, or with other non-radial. grooves which extend-outwardly from thexcenter of the disc-toa. point adjacent its periphery. However; such: grooves have conventionally-been substantially semi-circular in cross section, and have therefore been substantially symmetrical with respect to the line perpendicularto the working face of the disc.

It hasbeenidiscovered that improved refining results are obtained by providing relatively revclving pulp refining-members the working faces Of'fWh-iGh include outwardly directed grooves havingv curved. cross sections offset from, the line. perpendicular from such working faces, the grooves :thus being of asymmetric characterwith respectto suchnerpendicular'line. The oifset' rooves. of; thee-respective; relatively: revolvin -s members are found to coact with oneanother to rotate; the: pulp. stock: asit, travels along the grooves and. to whirl it about" the longitudinal groove axes. Thiswhirling action appears to indllceefiber" disposition, crosswise to the grooves tominimizeifiber damage in the refiner. AccQrdingly-a pulpof higher quality, as compared to thepulp produced in conventional refiners, is obtained.

:It-fis accordingly an object ofthe invention to provide. armechanisin for producing improved refinedi-fibrous'material. It is another object of thein-vention to provide refiner elements for fibrous ma rial fr m producing high quality fibrous stock. Other obiects andadvantages of the invention, includingthe simplicity and-economy of the same, will iapfurther detail-hereinafter, and in the dr wings wher i Fig. 1 represents a fragmentary face view ofv oneequadrant of a; revolving refiner disc constituting one embodiment of this invention;

2: represents a sectional view taken asiindicated by the lines andarrows II,II,,which apnea a e. 1:.

relatively revolving pulp Fig. 3 represents a fr mentary'face of one quadrant of a stationary-refinerdiso wliich is adapted to be disposed face-to-face with re spect to the revolving disc represented in 'Fig: 1 Fig. 4 representsa sectional view taken as-'-in-- dicated by the lines and arrows IV-IV, which continuation in appear in Fig. 3;

, Fig; 5=represents= a fragmentary enlarged sec tional view of the refiner discs of'Figs: 1' and 3; taken as. indicated by the,lines-and-arrows v v which appear in Figs. 1' and"3;therevolvingand stationary discs being arranged 'faceto face;

Figs. 6'8 represent sectional views simil'arto Fig. 5, indicating the relative-positions of theparts of the revolving and stationary discs-in'tlie' course of operationof'the apparatus; and

Figs. 9-12 represent sectionalviews, similar 'to Figs. 5-8, of a modified-form of-theinvention;

It will be appreciatedthatthe embodiments of the inventionz selected for illustration-in the drawings constitute preferred embodimentsof' the invention, and maybe modified in many particulars without departing from the-scope'of the. invention.

Referring now particularly to Figs. 1'4 -of;'the drawings, the refiner elements-211M012;'are in the .orm .of fiat discs having working faces 2 IE Dis-- posed: non-radially along. the working-faces 21 are the elongate. grooves :22 separated from one another by the intervening ridges 28". Thegrooves 22 aredisposediin groups andarrangedi at various angles onthe face of the dise Z-U substantially in, thelmannerzdescribed in: detail" inmy aforementioned copending U1 S; application Serial No. 193,643, of which-this application is=a= part, and the disclosure of which isincorporated herein by reference. Theelongate grooves 22" extend non-radially generally outwardly or toward. the peripheries of the re=- finer discs 20, 20a.

The numbers 23,, 24--designateinner andiouter" annular grooves in theworkingwfaces of the flat discs 2 9. The inner: annular groove 23 divides the Working face into inner and aoutenannularwork ing sectionszfi, 25;. Theelongate: grooves; 22" of inner working section 25:" are'atan 1 angle to the corresponding grooves 221: of: the immediately adjacent portion of outerworking-section 2.6 asfully brought out in my-aforementioned copending U. S. application Serial No.\193;643'.

The revolving. disc, 20 (Figs. .1, v2:),has. a hub '21 at its center'- and a;plurality;-ofspacedjeapart, relatively wide and deep radial passages; 3,0. Radial passages .have inclined .floors 31: which slope upwardly from hub'2;1 to annulargroovefiik Alternate ridg s 2:8 or, outer; working sectiomlfifi riphery of said disc, said grooves having curved cross sections the axes of which cross sections extend at an angle to a line perpendicular to said working face, and to the plane of the working face.

3. A refiner comprising a pair of relatively revolving refining discs having adjacent coacting Working faces substantially parallel to one another, each of said Working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fi brous pulp suspension to the inner ends of said grooves and for Withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs being similar as to size and shape but disposed at angles to one another, and said grooves having curved offset cross sections the axes of which cross sections are substantially parallel to one another and extend at an angle to the line perpendicular to the working faces, and to the plane of said working face.

4. A refiner comprising a pair of relatively revolving refining discs having adiacent coacting working faces substantially parallel to one another, each of said working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fibrous pulp suspension to the inner ends of said grooves and for withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs having curved offset cross sections, the axes of the cross sections of the grooves on one disc extending at an angle to the groove cross section axes of the other disc, all said axes being at substantially the same angle to a plane extending generally parallel to the working faces of the discs.

5. A fiber pulp refiner comprising relatively revolving pulp refining member having coacting adjacent working faces ubstantially parallel to one another, each of said working faces including a set of elongate grooves parallel to one another and extending outwardly in the direction of the outer edges of the Working faces, said grooves having curved cross sections, one end of the curve being at the working face and the other end spaced therefrom, and said grooves also having flat faces extending from said other end of the curve to said working face, said fiat face being disposed at an angle to the Working face and to a line perpendicular to said working face, means for introducing pulp suspension to the inner ends of said grooves, and means for withdrawing the refined pulp from the outer ends of said grooves.

6. In a pulp refiner, a pair of refiner discs having coacting adjacent Working faces, one of said discs bein stationary and the other revolving, said discs including elongate pulp carrying grooves directed outwardly on said working faces, at least some of the grooves of the revolving disc having in cross section a curved surface and a flat-surface, said curved surface forming an acute angle with the working face of the disc at the lagging edge of the groove, and said flat'face and working face forming an obtuse angle at the leading edge of the groove.

7. A fiber pulp refiner comprising relatively revolving pulp refining members having coacting adjacent working faces substantially parallel to one another, each of said Working faces ineluding an annular groove and a plurality of outwardly non-radially directed grooves disposed on the working faces outwardly of said annular groove, ridges intervening said outwardly directed grooves, flat faces upwardly inclined on said ridges extending at an angle from the base of said annular groove to the level of said ridges, said outwardly directed grooves having curved cross sectional contours offset from a line perpendicular to said working faces.

LIONEL M. SUTI-IERLAND.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,160,964 Warren Nov. 16, 1915 1,187,932 Ryther June 20, 1916 1,795,603 Hussey Mar. 10, 1931 1,814,587 Daniels July 14, 1931 2,035,994 Sutherland Mar. 31, 1936 2,156,320 Sutherland May 2, 1939 2,156,321 Sutherland May 2, 1939 2,424,726 Wells July 29, 1947

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1160964 *Apr 29, 1912Nov 16, 1915John E WarrenBeating-engine.
US1187932 *Oct 30, 1915Jun 20, 1916Ryther & Pringle CoMachine for refining paper-stock.
US1795603 *Mar 8, 1928Mar 10, 1931Bauer Brothers CompanyMethod of producing pulp
US1814587 *Mar 31, 1928Jul 14, 1931Riley Stoker CorpPulp refining apparatus
US2035994 *Oct 3, 1934Mar 31, 1936Sutherland Jr Daniel MansonFiber refining and refiner
US2156320 *Apr 1, 1936May 2, 1939Lionel M SutherlandFiber pulp refiner
US2156321 *Apr 1, 1936May 2, 1939Lionel M SutherlandFiber pulp refiner
US2424726 *Dec 28, 1944Jul 29, 1947Donald Wells HaroldPulp beater and selector
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2778282 *Mar 10, 1955Jan 22, 1957Sutherland Refiner CorpPulp refining apparatus
US2934278 *Mar 14, 1956Apr 26, 1960Noble & Wood Machine CompanyCombination jordan and disc refiner for paper stock
US2936128 *Dec 8, 1955May 10, 1960Howard BidwellApparatus for the treatment of paper stock
US2968444 *Nov 7, 1956Jan 17, 1961E D Jones CorpRefining discs
US3089655 *Aug 22, 1960May 14, 1963Adolf HeinzProcessing waste paper or the like
US3214104 *Jul 2, 1962Oct 26, 1965Voith Gmbh J MPaper making apparatus
US3674217 *Jul 30, 1970Jul 4, 1972Rolf Bertil ReinhallPulp fiberizing grinding plate
US3880367 *Sep 14, 1973Apr 29, 1975Suncrest Products IncGrain mill
US3910511 *May 20, 1974Oct 7, 1975Westvaco CorpOpen discharge pulp refiner
US4039154 *Mar 3, 1976Aug 2, 1977Sca Development AktiebolagRefining element
US4449670 *Oct 29, 1981May 22, 1984The Goodyear Tire & Rubber CompanyComminuting apparatus with improved feed system
US4449674 *Oct 29, 1981May 22, 1984The Goodyear Tire & Rubber CompanyComminuting apparatus with improved impeller construction
US4469284 *Oct 29, 1981Sep 4, 1984The Goodyear Tire & Rubber CompanyComminuting apparatus with improved rotor and stator recess construction
US4614310 *Oct 29, 1981Sep 30, 1986The Goodyear Tire & Rubber CompanyComminuting apparatus with fluid cylinder rotor and stator biasing
US5011091 *Aug 10, 1989Apr 30, 1991Haybuster Manufacturing Inc.Cellulose fiberization apparatus
US5039022 *Sep 5, 1989Aug 13, 1991Kamyr AbRefiner element pattern achieving successive compression before impact
US5085735 *Aug 23, 1990Feb 4, 1992Kamyr AbMethod of refining cellulosic fibrous material with successive expansions before impacts, and expansions, to achieve increased fiber flexibility
US5181664 *Apr 17, 1992Jan 26, 1993Andritz Sprout-Bauer, Inc.Grinding plate with angled outer bars
US5683048 *Jun 26, 1995Nov 4, 1997Sunds Defibrator Industries AbRefining elements
US5704559 *Jun 12, 1995Jan 6, 1998Sunds Defibrator Industries AbRefining element
US5779168 *Feb 29, 1996Jul 14, 1998Voith Sulzer Stoffaufbereitung GmbhRefiner and tooling for refining suspended fibrous material
US6443353May 25, 2000Sep 3, 2002Voith Sulzer Papiertechnik Patent GmbhFittings and process for producing fittings for the mechanical processing of aqueous paper stock
US8388807Feb 8, 2011Mar 5, 2013International Paper CompanyPartially fire resistant insulation material comprising unrefined virgin pulp fibers and wood ash fire retardant component
US8663427Apr 7, 2011Mar 4, 2014International Paper CompanyAddition of endothermic fire retardants to provide near neutral pH pulp fiber webs
US8685206Jan 28, 2013Apr 1, 2014International Paper CompanyFire retardant treated fluff pulp web and process for making same
US8870109 *Aug 5, 2011Oct 28, 2014Officine Airaghi S.R.L.Spare part for disc refiners for the production of paper
US8871053Feb 28, 2014Oct 28, 2014International Paper CompanyFire retardant treated fluff pulp web
US8871058May 31, 2013Oct 28, 2014International Paper CompanyAddition of endothermic fire retardants to provide near neutral pH pulp fiber webs
US20120032010 *Aug 5, 2011Feb 9, 2012Officine Airaghi S.R.LSpare part for disc refiners for the production of paper
EP0135697A2 *Jul 20, 1984Apr 3, 1985Wilhelm Siefer GmbH & Co. KGA multi-stage grinding device, especially for plastic masses, polymers for the modification of bitumen, P.T.F.E.- and regenerated rubber , offal for animal feed a.s.f.
Classifications
U.S. Classification241/245, 241/296, 241/261.3
International ClassificationB02C7/12, B02C7/00
Cooperative ClassificationB02C7/12
European ClassificationB02C7/12