US3272443A - Vibratory mill - Google Patents

Vibratory mill Download PDF

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Publication number
US3272443A
US3272443A US448574A US44857465A US3272443A US 3272443 A US3272443 A US 3272443A US 448574 A US448574 A US 448574A US 44857465 A US44857465 A US 44857465A US 3272443 A US3272443 A US 3272443A
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Prior art keywords
milling
boxes
mill
box
compartments
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US448574A
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English (en)
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Reiners Ewald
Otters Erich
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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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/16—Mills provided with vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting

Definitions

  • the invention relates to continuously operating vibrating or oscillating mills which are resiliently mounted to allow free displacement thereof and which are forced to describe gyratory vibrations by a suitable vibratory generator.
  • Vibrating mills are known in which two milling boxes, lying one upon another or side by side, are rigidly associated to provide a screening system that is secured to a base by supporting springs.
  • the required vibratoiy motions are produced by a generator of centrifugal forces arranged at the center of gravity of the system, the amplitude of the oscillations being dependent upon the magnirude of the centrifugal force generated.
  • oscillatory mills that consist of two symmetrical milling systems of equal size.
  • one system is secured to a base by supporting springs and is resiliently connected to the second system in such a way that both systems are capable of describing circular oscillations which are in phase displacement to each other by 180.
  • the vibrating means positioned in a central tube is rigidly connected with one of the two systems.
  • the object of the present invention is the avoidance of the drawbacks that attend the use of known vibratory mills.
  • a further object of the invention is the provision of improved mills of the aforesaid type.
  • This particular improvement lies in the fact that milling boxes have been devised that are cylindrical in cross section and are held with their front ends in side pieces that are rigidly connected with one another. These side pieces are formed in such a way as to jointly enclose the front ends of the milling boxes.
  • By a suitable subdivision of the side pieces into separate chambers, which can optionally communicate with each other through openings that can be closed it is possible to move the material being milled, as one chooses, either horizontally or vertically to the next milling box.
  • Another advantage realized is the control of the residence time in the mill, thus avoiding hold-up of material and .the formation of dead spaces.
  • the milling boxes will consist only of plain pipe sections of commercial type, which are readily exchangeable. This obviates, in many cases, the use of special protective measures against wear and tear.
  • the boxes may be turned as desired so that the wear and tear is distributed over Ithe whole circumference, thereby materially prolonging the useful life of the mill.
  • sleeved springs of a resilient material are used for supporting the milling boxes it is possible to provide not only a large clamping connection without tolerance limitations but, in addition to this, a vibratable multimass system wherein one mass is divided into several single masses.
  • a vibratable multimass system wherein one mass is divided into several single masses.
  • the resilient sleeved springs permit the subsequent building-in of cooling jackets for the milling boxes; as they are capable of preventing the escape, not only of the material being milled, but also of cooling fluid. All parts are easily interchangeable.
  • FIG. 1 is a sectional view taken through the milling boxes and the means for generating the vibrating motion of the mill;
  • FIG. 2 shows a transverse section through the side pieces of the mill
  • FIG. 3 shows one exemplified embodiment of the supporting system for the milling boxes.
  • FIGS. 1 ⁇ and 2 there is shown a diagrammatic View of a continuously operated vibratory mill having 4 milling boxes.
  • Two box-like side pieces 1 and 2 are rigidly connected with one another by means of a central pipe 3.
  • the side pieces are mounted on a base with the aid of supporting springs 4.
  • the side pieces are divided into separate chambers by partition walls 5 to 8, said chambers being in communication with each other upon removal of the covers 9.
  • the side pieces are provided with inlet openings and outlet openings 11.
  • the milling boxes 13 are inserted through the installation opening 12.
  • the mounting support is provided by sleeved springs 14 which lare modified by the box covers 15 and by the tightening of the movable flange 16 in such a way that aside from forming a seal that is airtight and impervious to dust there is insured a sufficiently rigid connection between the milling boxes and the side pieces.
  • the lower part of box covers 15 are grate-shaped.
  • the upper part of the covers are provided with charging ports 18 that are closed by covers 17.
  • the shaft turns in friction bearings 21 which are preferably in the form of hydrodynamically lubricated multi-surface friction bearings.
  • the shaft itself is fashioned as a tubular shaft wherein the cylindrical hollow space 22 is subdivided by a longitudinal partition wall 23. One half of the hollow interior is filled with a specically heavy substance 24 that serves as the eccentric weight.
  • the milling boxes 13 are filled with auxiliary grinding bodies such as balls or the like through charge ports 18.
  • the admission of the material to be milled is effected selectively through feed pipe 10 emptying in the first closed chamber and from the latter through openings in the lower part of box cover 15 into the rst milling box.
  • the material to be milled travels lthrough the box in a horizontal direction and arrives from the chamber located at the end into the next chamber beneath or adjacent it, from where it continues in its transit to the next milling box.
  • the material undergoing milling can either traverse consecutively all the milling boxes or only those that are superposed, which makes it possible, in the case Of a multiple feed of material, to form milling groups working in parallel relationship which milling paths are shortened and the output is increased.
  • the mill is capable of meeting, better than with the means heretofore available, the requirements with respect to liness and output.
  • FIG. 3 shows in section a further advantageous form of a mounting support for the milling boxes.
  • the sleeved spring 14 encloses the milling box with an initial stress such that the box is able to vibrate in a direction transverse to its longitudinal axis.
  • the centrifugal force of generator 19 compels the side pieces that are connected by the central pipe to describe gyratory vibrations which are transferred by the sleeved springs 14 to the milling boxes 13.
  • the oscillation amplitudes of the milling boxes will be greater than those of the generator means.
  • a vibrating mill including a plurality of generally parallel milling boxes arranged concentrically about a central axis, two end frames, the ends of the said milling boxes being positioned in and carried by the two said end frames, each end frame having a plurality of compartments therein, each compartment being in communication with a .single one of the said plurality of milling boxes, and selectively in communication with each other, whereby the material milled can be selectively conducted to a neighboring milling box, such that the residence time of the materialv in the milling boxes can be chosen on the basis of the ultimate neness desired, at least one inlet orifice on at least one end frame communicating with one of the said compartments, at least one outlet tone on at least one end frame communicating with another of said compartments.
  • the vibratory mill of claim 1 including resilient circumferential means for holding the ends of the said milling boxes and permitting rotating of the boxes about their lengthwise direction.
  • each milling box is colsed by end pieces, each end piece having a grate at the lower portion thereof and having a selectively openable and closable aperture at the upper portion.
  • the vibrating mill of claim 1 including energizable means carried by the mill for vibrating it in directions transverse ⁇ to the said central axis.
  • the said energizable means comprises an elongated and rotatable cylinder extending between the end frames and mounted on a shaft, the said shaft journaled on bearings, the said bearings being connected to the said end frames, the said cylinder being divided by a partition thus defining a closed volume within the said cylinder, the said closed volume being eccentrically located with respect to the said central axis and containing a heavy mass that serves as the eccentric weight.
  • ysaid energizable means is a hollow shaft subdivided by a wall, such that substantially one half of the hollow space is iilled with a mass serving as an eccentric weight.
  • said plurality of milling boxes is comprised of a first upper group and a second lower group, at least one end frame having ⁇ a said inlet orifice for each of said compartments communicating with one of said milling boxes of said upper group, and at least one end frame having a said outlet orifice for each of said compartments communicating with one of said milling boxes of said lower group.
  • said plurality of milling boxes is comprised of a rst upper group and a second lower group, each of said end frames having a said inlet orifice for each of said compartments communicating with one of said milling boxes of said upper References Cited bythe Examiner group, and each of said end frames having a said'outlet UNITED STATES PATENTS orifice for each of said compartments communlcatmg with one of said milling boxes of said lower group, 1,951,823 3/1934 EPPefS 241-137 16.
  • the vibrating mill of claim 3 including resilient 5 2,760,729 S/ 1956 Mittag 241-137 circumferential means for holding the ends of said milling 2,937,814 5/ 1960 J oisel 241-137 boxes, and said milling boxes being tubular, whereby the cooperation between said resilient means and the tubular ROBERT C. RIORDON, Primary Examiner.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Adjustment And Processing Of Grains (AREA)
US448574A 1962-02-22 1965-04-09 Vibratory mill Expired - Lifetime US3272443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES78163A DE1214517B (de) 1962-02-22 1962-02-22 Schwingmuehle

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US3272443A true US3272443A (en) 1966-09-13

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US448574A Expired - Lifetime US3272443A (en) 1962-02-22 1965-04-09 Vibratory mill

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US (1) US3272443A (de)
DE (1) DE1214517B (de)
GB (1) GB959652A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310245A (en) * 1963-07-10 1967-03-21 Kloeckner Humboldt Deutz Ag Grinding mill of the swinging type with a plurality of grinder drums
US3734412A (en) * 1970-12-16 1973-05-22 Kloeckner Humboldt Deutz Ag Method and arrangement for performing low-temperature grinding operations in a vibrating mill
US3785575A (en) * 1970-11-21 1974-01-15 Kloeckner Humboldt Deutz Ag Vibrating mill with introduction of refrigerants into the solid material being ground in the grinding chamber
US3838825A (en) * 1971-12-27 1974-10-01 Kloeckner Humboldt Deutz Ag Vibrating mill with heat insulating grinding chamber
EP0157647A2 (de) * 1984-04-06 1985-10-09 Ims Lycrete Limited Zerkleinerung
US5702060A (en) * 1992-10-30 1997-12-30 Matteazzi; Paolo High-energy high-capacity oscillating ball mill
US20060231653A1 (en) * 2004-02-19 2006-10-19 Gomez Felix A Vertical symmetrical vibrating mill
WO2011047249A1 (en) * 2009-10-15 2011-04-21 General Kinematics Corporation Vibratory crushing apparatus
US8596566B2 (en) * 2012-01-16 2013-12-03 Yang-Te Hsu Biomedical homogenizing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6253748A (ja) * 1985-09-02 1987-03-09 株式会社徳寿工作所 水平旋回型粉砕機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951823A (en) * 1930-04-07 1934-03-20 Walter P Eppers Grinding mill
US2760729A (en) * 1951-04-13 1956-08-28 Kloeckner Humboldt Deutz Ag Vibrating crusher
US2937814A (en) * 1953-05-28 1960-05-24 Ct D Etudes Et De Rech S De L Ball-crusher

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936003C (de) * 1951-04-14 1955-12-01 Carl Mittag Schwingmuehle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951823A (en) * 1930-04-07 1934-03-20 Walter P Eppers Grinding mill
US2760729A (en) * 1951-04-13 1956-08-28 Kloeckner Humboldt Deutz Ag Vibrating crusher
US2937814A (en) * 1953-05-28 1960-05-24 Ct D Etudes Et De Rech S De L Ball-crusher

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310245A (en) * 1963-07-10 1967-03-21 Kloeckner Humboldt Deutz Ag Grinding mill of the swinging type with a plurality of grinder drums
US3785575A (en) * 1970-11-21 1974-01-15 Kloeckner Humboldt Deutz Ag Vibrating mill with introduction of refrigerants into the solid material being ground in the grinding chamber
US3734412A (en) * 1970-12-16 1973-05-22 Kloeckner Humboldt Deutz Ag Method and arrangement for performing low-temperature grinding operations in a vibrating mill
US3838825A (en) * 1971-12-27 1974-10-01 Kloeckner Humboldt Deutz Ag Vibrating mill with heat insulating grinding chamber
EP0157647A2 (de) * 1984-04-06 1985-10-09 Ims Lycrete Limited Zerkleinerung
EP0157647A3 (en) * 1984-04-06 1986-10-29 Ims Lycrete Limited Comminuting
US5702060A (en) * 1992-10-30 1997-12-30 Matteazzi; Paolo High-energy high-capacity oscillating ball mill
US20060231653A1 (en) * 2004-02-19 2006-10-19 Gomez Felix A Vertical symmetrical vibrating mill
WO2011047249A1 (en) * 2009-10-15 2011-04-21 General Kinematics Corporation Vibratory crushing apparatus
US20110089278A1 (en) * 2009-10-15 2011-04-21 General Kinematics Corporation Vibratory Crushing Apparatus
US8528846B2 (en) 2009-10-15 2013-09-10 General Kinematics Corporation Vibratory crushing apparatus
US8596566B2 (en) * 2012-01-16 2013-12-03 Yang-Te Hsu Biomedical homogenizing device

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Publication number Publication date
DE1214517B (de) 1966-04-14
GB959652A (en) 1964-06-03

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