US3764079A - Roller or ball mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like - Google Patents

Roller or ball mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like Download PDF

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Publication number
US3764079A
US3764079A US00193648A US3764079DA US3764079A US 3764079 A US3764079 A US 3764079A US 00193648 A US00193648 A US 00193648A US 3764079D A US3764079D A US 3764079DA US 3764079 A US3764079 A US 3764079A
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United States
Prior art keywords
rollers
stator
ribs
rotor
grooves
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Expired - Lifetime
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US00193648A
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English (en)
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C Consoli
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/08—Mills with balls or rollers centrifugally forced against the inner surface of a ring, the balls or rollers of which are driven by a centrally arranged member

Definitions

  • ABSTRACT A mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like which consists of an outer tubular stator and an inner rotor revolvable in the stator. Forks are provided on the outer wall of the rotor for supporting rollers for rotation while permitting the rollers to be urged outwardly when the rotor turns so that the rollers ride on the inner surface of the stator.
  • the rollers as thus supported are arranged in a spiral path along the outer wall of the rotor.
  • the rollers are formed with separate grooves which define spiral ribs running from end to end of the rollers. The corners of the ribs are sharp and are maintained sharp by riding on the inner surface of the stator.
  • a ball or roller mill is described and shown in the above patent, which consists of an inner rotor, and of an ,outer tubular stator, between which confronting surfaces, e.g., spirally extending channels are provided for the accommodation of balls or rollers, which are thereby guided across a well defined path.
  • the material to be comrninuted is forced along such spiral path, whereby successful results can be obtained, owing to rolling action of rollers or balls, conveyed by the rotor and urged into contact with the stator inner wall.
  • the thus designed machine has proved to be highly efficient and adequate in its performance, since the grinding fineness or final particle size. can be controlled not only by varying the processing time of material in the mill (i.e., acting on the pump by which same material is fed), but also be adjusting the RPM of the rotor.
  • rollers are provided as grinding bodies, it is to be remembered that rollers having a smooth rolling surface are foreseen for the use in the said Patent.
  • the mill of the present invention constitutes an outer tubular stator within which an inner rotor turns.
  • the outer surface of the inner rotor supports a plurality of cradle bearings, i.e., forks, having open ends facing the stator. These forks are mutually arranged so as to define a spiral on the rotor.
  • the forks are provided in pairs, the forks of each pair being registered parallel to the axis of rotation of the rotor.
  • Each pair of forks rotatably receives journals at the opposite ends of a different roller so that the rollers like the pairs of forks are located in a spiral path extending along the rotor.
  • the rollers Becuase the cradles have open end facings in the stator, the rollers are impelled outwardly as the rotor turns so that they ride on the inner surface of the stator.
  • Individual rollers are provided with a spiral groove which defines a spiral rib. The corners of the ribs are sharp. Because the rollers ride on the inner surface of the stator as the rollers turn, as the rollers wear down the ribs are selfsharpened.
  • the grooves may be either rectangular or trapezoidal in their form.
  • FIG. 1 is a front view of a few rollers
  • FIG. 2 is a view taken on the line IllI of FIG. 1;
  • FIG. 3 is a cross-section of rollers, taken perpendicular to the rotation axis of the rotor and of the rollers;
  • FIG. 4 is an enlarged fragmentary sectional view of the roller and associated portion of the stator illustrat ing a modified form of the invention.
  • rollers formed according to the present invention denotes the rollers formed according to the present invention and guided between the supporting and guiding means, extending from the outer wall of rotor 4, which rotor turns in a stator S, and by which the spiral paths of the rollers and of material being ground are defined.
  • Such rollers are formed with spirally extending grooves 15, having a rectangular crosssection, and providing two sharp corners 15a. A plurality of such sharp comers is therefore present on the surface at each edge of the ribs defined by the grooves.
  • the grooves may have a trapezoid shaped cross-section as shown in FIG. 4, with an angle of inclination adjusted according to hardness of materials to be comminuted.
  • the grinding efficiency is materially increased, and is uniformly maintained on the same high level unitl the threads are worn out.
  • each roller is supported through their hubs 6a by forks 5, formed with suitable seats 5a, and from which it can be removed, when worn out, and replaced with a new roller.
  • the forks permit the spirally ribbed rollers to shift radially outwardly into contact with the inner surface of the outer tubular .stator as the rollers turn so that the ribs of the rollers ride on said surface of the stator whereby to provide a self-sharpening action for the corners of the ribs.
  • the mill can be installed not only in a vertical position, but in any other position that might appear more convenient, and in particular in a horizontal position, wherein no changes occur in its operation, also due to the fact that recourse may be made to a forced feeding of material, whereby it can be abstained from the force of gravity.
  • a roller mill for the refining of cocoa and chocolate and for the grinding of paints, varnishes, enamels, and the like, said mill comprising an outer tubular stator, a tubular rotor turning inside of said stator, a plurality of bearing means on the external surface of the rotor, said bearing means defining a spiral path extending along the outer wall of the rotor, a plurality of rollers each associated with a different bearing means, said rollers having circumferential grooves, said grooves defining ribs with a smooth exterior surface the corners of the ribs being sharp, said bearing means being constructed to permit the rollers to shift radially outwardly when the roller turns into engagement with the inner surface of the stator so that the ribs of the rollers ride on said surface of the stator whereby to provide a selfsharpening action for said corners of the ribs as the ribs wear down.
  • a mill according to claim 1 wherein the grooves show a trapezoidal cross-section.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Confectionery (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
US00193648A 1971-07-10 1971-10-29 Roller or ball mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like Expired - Lifetime US3764079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT26878/71A IT968032B (it) 1971-07-10 1971-07-10 Mulino a sfere o rulli per la raf finazione di cacao cioccolato ver nici pitture smalti e prodotti si milari

Publications (1)

Publication Number Publication Date
US3764079A true US3764079A (en) 1973-10-09

Family

ID=11220430

Family Applications (1)

Application Number Title Priority Date Filing Date
US00193648A Expired - Lifetime US3764079A (en) 1971-07-10 1971-10-29 Roller or ball mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like

Country Status (15)

Country Link
US (1) US3764079A (OSRAM)
JP (1) JPS5614343B1 (OSRAM)
AT (1) AT325399B (OSRAM)
AU (1) AU3785272A (OSRAM)
BE (1) BE775512A (OSRAM)
BR (1) BR7108003D0 (OSRAM)
CA (1) CA934348A (OSRAM)
DE (1) DE2152218A1 (OSRAM)
DK (1) DK147615C (OSRAM)
ES (1) ES396321A2 (OSRAM)
FR (1) FR2145899A6 (OSRAM)
GB (1) GB1368334A (OSRAM)
IT (1) IT968032B (OSRAM)
NL (1) NL7116073A (OSRAM)
SU (1) SU464089A3 (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063687A (en) * 1975-09-18 1977-12-20 General Comminution Inc. Comminution device
EP0029734A1 (en) * 1979-11-26 1981-06-03 General Comminution Inc. Multiple stage comminution device
US6238724B1 (en) * 1998-10-29 2001-05-29 Kraft Foods, Inc. Chocolate refining process
US20100196574A1 (en) * 2007-07-21 2010-08-05 Luc Joseph Paul Antonie Marie Rumbaut Process and product
US20100203221A1 (en) * 2007-07-21 2010-08-12 Luc Joseph Paul Antonie Marie Rumbaut Process
CN110882811A (zh) * 2019-12-12 2020-03-17 江苏吉能达环境能源科技有限公司 一种多级粉磨超细粉生产设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503817C1 (de) * 1985-02-05 1986-10-09 DET-Dräger-Energie-Technik GmbH & Co KG, 4175 Wachtendonk Vorrichtung zum Zerkleinern und/oder Mischen von festen,pastoesen und/oder fluessigen Stoffen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1269424A (en) * 1917-07-19 1918-06-11 Sebastiano Grassi Mill.
US1736394A (en) * 1929-04-15 1929-11-19 Arthur H Dierker Grinding machine
US2413793A (en) * 1944-02-28 1947-01-07 Renwick J Sharp Vertical axis type mixing and chasing mill
US2536332A (en) * 1939-02-16 1951-01-02 Vincent Henri Leon Xavier Apparatus for refining fibrous materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1269424A (en) * 1917-07-19 1918-06-11 Sebastiano Grassi Mill.
US1736394A (en) * 1929-04-15 1929-11-19 Arthur H Dierker Grinding machine
US2536332A (en) * 1939-02-16 1951-01-02 Vincent Henri Leon Xavier Apparatus for refining fibrous materials
US2413793A (en) * 1944-02-28 1947-01-07 Renwick J Sharp Vertical axis type mixing and chasing mill

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063687A (en) * 1975-09-18 1977-12-20 General Comminution Inc. Comminution device
EP0029734A1 (en) * 1979-11-26 1981-06-03 General Comminution Inc. Multiple stage comminution device
US6238724B1 (en) * 1998-10-29 2001-05-29 Kraft Foods, Inc. Chocolate refining process
US20100196574A1 (en) * 2007-07-21 2010-08-05 Luc Joseph Paul Antonie Marie Rumbaut Process and product
US20100203221A1 (en) * 2007-07-21 2010-08-12 Luc Joseph Paul Antonie Marie Rumbaut Process
US8298605B2 (en) 2007-07-21 2012-10-30 Barry Callebaut Ag Process for producing chocolate
US8329242B2 (en) 2007-07-21 2012-12-11 Barry Callebaut Ag Process for making chocolate
CN110882811A (zh) * 2019-12-12 2020-03-17 江苏吉能达环境能源科技有限公司 一种多级粉磨超细粉生产设备
CN110882811B (zh) * 2019-12-12 2021-04-30 江苏吉能达环境能源科技有限公司 一种多级粉磨超细粉生产设备

Also Published As

Publication number Publication date
SU464089A3 (ru) 1975-03-15
BR7108003D0 (pt) 1973-04-10
AU3785272A (en) 1973-07-19
CA934348A (en) 1973-09-25
JPS5614343B1 (OSRAM) 1981-04-03
GB1368334A (en) 1974-09-25
BE775512A (fr) 1972-03-16
AT325399B (de) 1975-10-27
DE2152218A1 (de) 1973-02-01
DK147615C (da) 1985-04-29
NL7116073A (OSRAM) 1973-01-12
IT968032B (it) 1974-03-20
DK147615B (da) 1984-10-22
FR2145899A6 (OSRAM) 1973-02-23
ES396321A2 (es) 1974-05-01

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