US3280426A - Floating die type pellet mill - Google Patents

Floating die type pellet mill Download PDF

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Publication number
US3280426A
US3280426A US78507A US7850760A US3280426A US 3280426 A US3280426 A US 3280426A US 78507 A US78507 A US 78507A US 7850760 A US7850760 A US 7850760A US 3280426 A US3280426 A US 3280426A
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US
United States
Prior art keywords
shaft
bearing
roll
housing
front wall
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
US78507A
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English (en)
Inventor
Edgar N Meakin
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
Original Assignee
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
Priority to NL267832D priority Critical patent/NL267832A/xx
Application filed by Individual filed Critical Individual
Priority to US78507A priority patent/US3280426A/en
Priority to GB25768/61A priority patent/GB935568A/en
Priority to DK496661AA priority patent/DK107725C/da
Priority to CH1491161A priority patent/CH400775A/fr
Priority to FR882861A priority patent/FR1308450A/fr
Application granted granted Critical
Publication of US3280426A publication Critical patent/US3280426A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/23—Hay wafering or pelletizing means

Definitions

  • a ring type die instead of being mounted on the wall of the mill housing as has been conventional practice in the past, is carried entirely by the extrusion rolls, of which there are at least three in number equally spaced within the die which they support.
  • FIG. 1 is a view in section through a pellet mill of the present invention
  • FIG. 5 is a view depicting a tensioning lever for supporting an idler gear employed in tensioning a drive chain.
  • FIG. 6 is a front view, partly in section, of a pellet mill embodying a modification of the invention.
  • FIG. 7 is a view in section taken in the planes 7-7 of FIG. 6.
  • FIG. 8 is a view in section taken in the planes 8-8 of FIG. 6.
  • a mounting base 1 on which is mounted a mill housing 3 including parallel front and rear Walls 5 and 7 and end walls 9 and 11 connecting the front and rear walls.
  • the front and rear walls support two pairs of aligned bearing housings 1315 and included bearings 17, the one pair of aligned housings and bearings being displaced substantially 120 from the other pair about a central axis 25.
  • One pair of aligned bearings supports a fixed location extrusion roll supporting shaft 29 journalled therein and extending through the front wall to mount an extrusion roll 31, while the other pair carries a similar fixed location extrusion roll shaft 35 which likewise extends beyond the front wall 5 and mounts an extrusion roll 37.
  • the means for mounting such adjustable roll includes a saddle shaped lever 43 which is journalled at one end on a pivot shaft 45 supported by and between the front and rear walls, at a location such that an intermediate point 47 of the lever can describe an arc 51 tangent to the perpendicular bisector 53 of the line 55 connecting the fixed location shafts 29, 35, while the point of tangency is selected to be substantially 120 degrees from the axes of the other rolls 31 and 37 as measured about the central axis 25.
  • the lever 43 is made adjustable through a range of adjustments on its pivot, such as to swing the aforementioned point 47 through such tangential are 51.
  • the means for so adjusting the lever comprises an adjusting screw 59 connected to the free end of the lever and extending freely through a wall of the housing to receive an adjusting wheel 61 threadedly secured thereon externally of the housing.
  • the aforementioned adjustable mounting of the third extrusion roll 41 places it at substantially 120 away from either of the fixed locations rolls 31, 37.
  • the three rolls are power driven in a positive manner, the drive means for this purpose including a gear or sprocket 81 on each of the rolls shafts, and a gear or sprocket chain 83 encircling the gears or sprockets in engagement therewith.
  • One of the fixed location roll shafts 35 extends through the rear wall of the housing and carries a gear 85 in mesh with a drive pinion 87 driven by a motor 89 mounted on the base.
  • Tension in the driven chain 83 is maintained by suitable tension means including a lever 91 supported at an intermediate point on a shaft 93 between the front and rear walls of the housing, such lever including a fulcrum sleeve 95 journalled on said shaft and having spaced parallel arms 97 fixed to its ends and straddling the drive chain 83 to carry at such end, an idler gear or sprocket 99 in mesh with the drive chain.
  • suitable tension means including a lever 91 supported at an intermediate point on a shaft 93 between the front and rear walls of the housing, such lever including a fulcrum sleeve 95 journalled on said shaft and having spaced parallel arms 97 fixed to its ends and straddling the drive chain 83 to carry at such end, an idler gear or sprocket 99 in mesh with the drive chain.
  • the three rolls cooperate to provide a support for floating a ring type die 115, the compression side of which is preferably recessed along the area of the die holes to receive the rolls and provide a retaining shoulder 117 to each side of the rolls.
  • the adjustable roll 41 is swung inwardly along its prescribed arc of movement, which will permit assembling of the ring die over the rolls, following which, the adjustable roll is moved outwardly until it engages the compression side of the die with suflicient pressure to establish pressure engagement between all the rolls and the die.
  • the positive drive rotation of the rolls will simultaneously, through the existing frictional engagement between the rolls and the die, produce rotation of the die, whereby pellet material introduced into the extrusion or die chamber defined by the die, will be extruded through the die apertures.
  • a main front plate 125 preferably of circular shape and covering an area greater than that of the die chamber, is aifixed to the front wall 5 of the housing and sealed thereto about its peripheral edge by a sealing ring 127.
  • This main front plate has openings therein to closely fit the protruding ends of the fixed location roll shafts 29 and 35, such openings being bounded by a circular rib 129 of slightly greater diameter to provide for insertion and retention of a seal 131 about the proximate shaft.
  • the main front plate 125 is provided with an enlarged opening of a diameter roughly comparable to the diameter to the roll itself.
  • the surrounding portion of the main front plate is formed with a two stage recess 137, the central or deeper section being of sufficient area to slidably receive a shaft seal plate 139 of comparable thickness and having a rib 141 encircling the stub shaft 65 and spaced sufficiently from the shaft to provide for reception of suitable sealing means 143.
  • the shaft seal plate 139 is retained in sliding engagement with the recessed portion of the main front plate 125, by a retainer plate 147 which snugly fits into the front main plate, flush with the front surface thereof, and of a thickness sufiicient to hold the shaft seal plate 139 in sliding contact with the main front plate, to allow for the necessary adjustments of the roll 41 mounted on the stub shaft. It is noted that the shaft seal plate 139 and the retainer plate 147 encircle the adjustable stub shaft 65 only.
  • a circular die seal plate 151 which is adapted to receive the proximate end of the die 115 when the die is assembled on the rolls, and is further adapted to shift with movement of the die in response to adjustments of the adjustable roll 41, by providing shaft openings 155 therethrough of sufficient size and shape to permit of such shifting.
  • Material to be pelleted is supplied through a down chute 181 mounted on a door 183 with its discharge end extending through an opening 185 in said door. From the chute, the material is discharged onto a flaring guide component 187, the large end of which is flanged for mounting the guide component onto the end of the ring die 115 for rotation with such die.
  • a deflect-or 191 supported by a stern 193 from the die seal plate 151 is angu'larly positioned along the inner surface of the flaring guide component 127, whereby to intercept a portion of the material which may be carried around by the guide member, and deflect the same into the upper portion of the die chamber.
  • this deflector is mounted on the die seal plate, it will shift with any movements of the die resulting from adjustments of the adjustable roll 41, and accordingly the deflector will always maintain its proper relationship with the flaring guide component.
  • the door 183 is mounted on hinges 197 extending from the housing 3, and is provided with conventionally installed pellet knives 199 fixedly related to the die 115, to form pellets from the material being extruded from such die.
  • the flange 226 substantially borders an opening in the front wall 5 over which is a wall plate 227 into which is rotatably fitted, a circular plate or insert 228 which is bolted or otherwise aflixed to the exposed end of the bearing assembly housing 225 on a common axis.
  • this plate or insert is an opening located with its center on the axis of the shaft 215 to permit passage of the shaft through the insert to mount the adjustable roll 41.
  • I provide clamping means 255 for each bearing assembly housing 223 and 225, by partially severing each flange from its associated wall, splitting the severed portion and providing the ends with bored opposing ears 259, 261 to slidably receive an adjusting screw 265 which extends through an end or proximate wall of the machine housing where it mounts a control lever 267.
  • Reversely threaded nuts 269, 271 to either side of the opposing ears, will permit of clamping or releasing of the associated bearing assembly housing at will, merely through manipulation of the associated lever 267.
  • a drive chain 281 connects this shaft to a sprocket 283 on the other fixed roll shaft 29.
  • the first shaft 35 is drive connected to a sprocket 287 on the adjustable shaft 215, by a drive chain 293 which encircles an idler sprocket 295 in a manner similar to that illustrated and described in connection with the embodiment of FIGS. 1 through 5, to maintain tension in the associated drive chain, despite adjustments of the adjustable roll 41.
  • the shaft which mounts the adjustable roll may be supported in any conventional manner such as between the front and rear walls of the housing, with the front end extending through the front wall and provided with an eccentric extension on which the roll will be rotatably mounted.
  • the sealing of the shaft where it passes through the front wall may be conventional.
  • the permissible angular rotation of the shaft will enable adjustments of the roll.
  • the adjustable roll will be driven by the rotating die, while the remaining rolls will be keyed or otherwise fixed to their respective shafts and will rotate with such shafts, which will be driven.
  • a pellet mill comprising a housing including front and rear walls; means for adjustably supporting an extrusion roll adjacent the outer side of said front wall; said means including a pair of bearing housings, means rotatably supporting one of said bearing housings adjacent said front wall, means rotatably supporting said other bearing housing adjacent said rear wall independently of but in alignment with said first rotatable bearing housing, bearing means eccentrically carried by one of said rotatable bearing housings, bearing means eccentrically carried by the other of said rotatable bearing housings and on a common axis with said first bearing means, a shaft journalled in said bearing means and extending through an opening in said front wall of a size to expose the proximate bearing housing; a roll mounted on the extended end of said shaft; and means for angularly adjusting said bearing housings simultaneously to swing said shaft and its roll through an arc to obtain adjustment of said roll, said means including a gear axially connected with each of said bearing housings, a pair of pinions on a common shaft, each in mesh with one of said gear
  • a pellet mill com-prising a base; a housing on said base including parallel front and rear walls and end walls connecting said front and rear walls; two pairs of aligned bearing housings and included bearings in said front and rear walls, the one pair being displaced substantially degrees from the other pair about a central axis; a fixed location extrusion roll supporting shaft journalled in each pair of aligned bearings and extending through said front wall; an extrusion roll mounted on each of said shafts; means for adjustably supporting a third extrusion roll along an arc tangent to the mid-line between said aforementioned rolls, said means including an adjustable roll supporting shaft; an extrusion roll journalled on said adjustable roll supporting shaft and movable through said are with adjustments of said adjustable roll supporting shaft; means for driving said rolls; means for sealing said fixed location roll shafts in said front wall, while leaving an opening for said adjust-able supporting means shaft, sufiiciently large to permit of the desired adjustments of said adjustable roll supporting shaft; means for sealing said adjustable roll supporting shaft in said front wall, said means
  • a pellet mill comprising a housing including parallel front and rear walls and end walls connecting said front and rear walls; two pairs of aligned bearing housings and included bearings in said front and rear walls the one pair being displaced substantially 120 degrees from the other pair about a central axis; a fixed location extrusion roll supporting shaft journalled in each pair of aligned bearings and extending through said front wall, each of said fixed shafts being exposed intermediate its aligned supporting bearings; an extrusion roll mounted on the extended end of each of said shafts; means for adjustably supporting a third extrusion roll about a point substantially 120 degees from each of said other rolls, said means including a shaft supported in a pair of aligned bearings and extending through said front wall at a location such that the axis of said shaft can describe a path substantially through said point, said shaft being exposed intermediate its aligned bearings; means for driving said rolls, said means including a sprocket on the exposed portion of each of said roll shafts between the aligned bearings supporting such shaft;
  • a pellet mill comprising a housing including front and rear walls; a fixed location extrusion roll supporting shaft journalled in said front and rear walls; a second fixed location extrusion roll supporting shaft journalled in said front and rear walls and extending through said front Wall; said second shaft being displaced substantially 120 degrees from said first shaft about a central axis; an extrusion roll mounted on each of said shafts; means for adjust-ably supporting a third extrusion roll about a point substantially 120 degrees from each-of said other rolls, said means including a pair of bearing housings, means rotatably supporting one of said bearing housings adjacent said front wall, means rot-atably supporting said other bearing housing adjacent said rear wall in alignment with said first rotatable bearing housing, a bearing eccentrically carried by one of said rotatable bearing housings, a bearing eccentrically carried by the other of said rotatable bearing housings and on a common axis with said first bearing, a shaft journalled in said bearings and extending through said front Wall, said shaft being exposed between its supporting bearings,
  • a pellet mill comprising a housing including front and rear walls; two pairs of aligned bearing housings and included bearings in said front and rear walls, the one pair being displaced substantially 120 degrees from the other pair about a central axis; a fixed location extrusion roll supporting shaft journalled in each pair of aligned bearlugs and extending through said front wall with each of said shafts exposed intermediate its supporting bearings; an extrusion roll mounted on each of said shafts; means for adjustably supporting a third extrusion roll about a point substantially 120 degrees from each of said other rolls, said means including a pair of bearing housings, means rotatab-ly supporting one of said bearing housings adjacent said front Wall, means .rotatably supporting said other bearing housing adjacent said rear wall independently of but in alignment with said first rotatable bearing housing, a bearing assembly eccentrically carried by one of said rotatable bearing housings, a bearing assembly eccentrically carried by the other of said rotatable bearing housings and on a common axis with said first bearing assembly, a shaft journalled in

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US78507A 1960-12-27 1960-12-27 Floating die type pellet mill Expired - Lifetime US3280426A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL267832D NL267832A (da) 1960-12-27
US78507A US3280426A (en) 1960-12-27 1960-12-27 Floating die type pellet mill
GB25768/61A GB935568A (en) 1960-12-27 1961-07-17 Floating die type pellet mill
DK496661AA DK107725C (da) 1960-12-27 1961-12-12 Briketpresse.
CH1491161A CH400775A (fr) 1960-12-27 1961-12-21 Pastilleuse
FR882861A FR1308450A (fr) 1960-12-27 1961-12-22 Pastilleuse à matrice flottante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78507A US3280426A (en) 1960-12-27 1960-12-27 Floating die type pellet mill

Publications (1)

Publication Number Publication Date
US3280426A true US3280426A (en) 1966-10-25

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ID=22144455

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Application Number Title Priority Date Filing Date
US78507A Expired - Lifetime US3280426A (en) 1960-12-27 1960-12-27 Floating die type pellet mill

Country Status (5)

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US (1) US3280426A (da)
CH (1) CH400775A (da)
DK (1) DK107725C (da)
GB (1) GB935568A (da)
NL (1) NL267832A (da)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538546A (en) * 1969-09-25 1970-11-10 California Pellet Mill Co Adjustable feed deflector
US3950120A (en) * 1973-12-21 1976-04-13 Simon-Barron Limited Pelletising machines
US4711622A (en) * 1984-07-04 1987-12-08 Gebruder Buhler Ag Pellet mill
US4770621A (en) * 1986-01-24 1988-09-13 Gebruder Buhler Ag Pellet mill
US4817517A (en) * 1985-05-09 1989-04-04 Gebrueder Buehler Ag Method and apparatus for making food pellets
US5248469A (en) * 1992-10-19 1993-09-28 California Pellet Mill Company Mechanical remote roll adjusting apparatus and method for a pellet mill
US20100183759A1 (en) * 2009-01-21 2010-07-22 Allis Carl R Roller for Pelleting Mill
WO2011134606A1 (de) * 2010-04-27 2011-11-03 Hosokawa Bepex Gmbh Doppelwellenanordnung mit verstellbarem achsabstand und verbesserter dichtungseinheit
WO2012112850A1 (en) * 2011-02-18 2012-08-23 New England Wood Pellet, Llc Pellet mill
WO2014089265A1 (en) 2012-12-05 2014-06-12 Cpm Acquisition Corporation Two-piece roller for pelleting mill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124963B (en) * 1982-06-01 1985-12-24 Bootham North Engineering Limi Adjustable pelletising roller
FR2863184B1 (fr) * 2003-12-04 2006-02-17 Stolz Sequipag Presse a granulation pour pulverulents a moyens de lubrification ameliores

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1153372A (en) * 1914-01-02 1915-09-14 Alexander Churchward Power-transmission means for operating dynamos.
US1662229A (en) * 1926-01-29 1928-03-13 Ballot Ernest Maurice Apparatus for regulating the tension of chains
US2160302A (en) * 1938-04-25 1939-05-30 Popick Mfg Company A Compressed feed machine
US2391638A (en) * 1942-06-08 1945-12-25 Edgar T Meakin Apparatus for making pellets
US2642011A (en) * 1951-01-03 1953-06-16 Sizer Albert William Extrusion machine for molding pellets and the like from plastic substances
US2870481A (en) * 1956-02-24 1959-01-27 Bonnafoux Paul Rotary pellet mill
USRE24775E (en) * 1960-02-02 Bonnafoux

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24775E (en) * 1960-02-02 Bonnafoux
US1153372A (en) * 1914-01-02 1915-09-14 Alexander Churchward Power-transmission means for operating dynamos.
US1662229A (en) * 1926-01-29 1928-03-13 Ballot Ernest Maurice Apparatus for regulating the tension of chains
US2160302A (en) * 1938-04-25 1939-05-30 Popick Mfg Company A Compressed feed machine
US2391638A (en) * 1942-06-08 1945-12-25 Edgar T Meakin Apparatus for making pellets
US2642011A (en) * 1951-01-03 1953-06-16 Sizer Albert William Extrusion machine for molding pellets and the like from plastic substances
US2870481A (en) * 1956-02-24 1959-01-27 Bonnafoux Paul Rotary pellet mill

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538546A (en) * 1969-09-25 1970-11-10 California Pellet Mill Co Adjustable feed deflector
US3950120A (en) * 1973-12-21 1976-04-13 Simon-Barron Limited Pelletising machines
US4711622A (en) * 1984-07-04 1987-12-08 Gebruder Buhler Ag Pellet mill
US4817517A (en) * 1985-05-09 1989-04-04 Gebrueder Buehler Ag Method and apparatus for making food pellets
US4770621A (en) * 1986-01-24 1988-09-13 Gebruder Buhler Ag Pellet mill
US4861529A (en) * 1986-01-24 1989-08-29 Gebruder Buhler Press roller adjustment
US5248469A (en) * 1992-10-19 1993-09-28 California Pellet Mill Company Mechanical remote roll adjusting apparatus and method for a pellet mill
EP0594278A1 (en) * 1992-10-19 1994-04-27 California Pellet Mill Company Roll adjusting apparatus and method for a pellet mill
US20100183759A1 (en) * 2009-01-21 2010-07-22 Allis Carl R Roller for Pelleting Mill
WO2011134606A1 (de) * 2010-04-27 2011-11-03 Hosokawa Bepex Gmbh Doppelwellenanordnung mit verstellbarem achsabstand und verbesserter dichtungseinheit
WO2012112850A1 (en) * 2011-02-18 2012-08-23 New England Wood Pellet, Llc Pellet mill
US9132399B2 (en) 2011-02-18 2015-09-15 New England Wood Pellet, Llc Pellet mill
WO2014089265A1 (en) 2012-12-05 2014-06-12 Cpm Acquisition Corporation Two-piece roller for pelleting mill

Also Published As

Publication number Publication date
CH400775A (fr) 1965-10-15
GB935568A (en) 1963-08-28
DK107725C (da) 1967-06-26
NL267832A (da)

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