US2992782A - Armoring for mill drums or the like - Google Patents

Armoring for mill drums or the like Download PDF

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Publication number
US2992782A
US2992782A US852450A US85245059A US2992782A US 2992782 A US2992782 A US 2992782A US 852450 A US852450 A US 852450A US 85245059 A US85245059 A US 85245059A US 2992782 A US2992782 A US 2992782A
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United States
Prior art keywords
plates
adjacent
armor
mill
armor plates
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Expired - Lifetime
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US852450A
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English (en)
Inventor
Taubmann Harro
Oberndorfer Johann
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.)
Fellner and Ziegler GmbH
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Fellner and Ziegler GmbH
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Publication date
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Classifications

    • 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
    • B02C17/18—Details
    • B02C17/22—Lining for containers

Definitions

  • the present invention relates to mill drums and is particularly concerned with the arrangement of armor plates or lining in the drums of tube mills used for crushing very hard materials.
  • Tube mills or the like which are primarily intended for crushing hard materials are lined on the inner surface thereof with armor plates.
  • the drum casing is provided with a suflieient number of bores through which the threaded bolts on the armor plates extend and to secure the plates rigidly to the drum casing by means of nuts threaded onto the outwardly extending bolts.
  • adjacent armor plates are placed onto the inner surface of the drum casing with a space or gap therebetween and intermediate coupling members are inserted in the spaces between adjacent armor plates, which are resilient laterally of their longitudinal extent.
  • the intermediate coupling members may be in the form of cylindrical coil springs having an outer diameter which is greater than the width of the recesses of any two adjacent armor plates together with the gap between said plates. It is also possible to employ slotted tubes in lieu of such coil springs, or to insert a pair of undulated strips adjacent each other in the hollow space between proximate armor plates in a manner to insure a resilient effect of the intermediate members transversely of their longitudinal extent.
  • FIG. 1 is a section of the wall of the drum casing of a tube mill having a lining of armor plate taken transversely with respect to the longitudinal axis of the mill.
  • FIG. 2 illustrates in detail and to a larger scale the connection between two armor plates with a helical spring interposed.
  • the armor plates 2, 3, 4 and 5 are disposed on the inner wall of the drum casing 1 in a manner that small gaps 6, 7, 8 are provided between the adjacent plates which may be approximately 1 or 2 mm. in width.
  • Substantially semi-circular recesses are provided along adjacent sides of the plates 2 and 3 into which cylindrical pins 9, 10 are placed. The diameter of these pins is such that the small gaps 6, 7 are maintained between the plates.
  • the plates are provided with inwardly bulging conformations at the ends adjacent said gaps.
  • the gap 8 is provided which may be somewhat wider than the gaps 6 and 7.
  • the cylindrical space 11 between the armor plates 4 and 5 is provided with a cylindrical helical spring 12.
  • the outer diameter of this spring 12in relation to the inner diameter of the cylindrical opening 11 is such as to provide the gap 8 between the two armor plates 4 and 5.
  • Armoring for the drums of tube mills or the like of the type comprising a generally cylindrical drum casing and a plurality of armor plates disposed along the inner drum wall and extending in the direction of the drum axis, said plates having adjacent inwardly bulging end portions of increased thickness and presenting lateral surfaces having recesses, said recesses of adjacent said plates registering and defining an aperture for an intermediate member therebetween, adjacent said plates being positioned with a gap therebetween, and at least one resilient intermediate member in the form of a helical spring disposed in one said aperture intermediate adjacent plates, said spring being compressible transversely of the longitudinal extent of said plates and yielding to heat expansion of said plates.
  • Armoring for the drums of tube mills or the like of the type comprising a generally cylindrical drum casing and a plurality of armor plates disposed along the inner drum wall and extending in the direction of the drum axis, said plates having adjacent inwardly bulging end portions of increased thickness and presenting lateral surfaces having recesses, said recesses of adjacent said plates registering and defining an aperture for an intermediate member therebetween, adjacent said plates being positioned with a gap therebetween, and at least one resilient intermediate member disposed in one said aperture intermediate adjacent plates, said intermediate member being in the form of a helical spring having in non-compressed condition a greater diameter than the diameter of adjacent recesses and being operative to force adjacent plates apart to press them against other plates and provide for firm engagement of said plates with each other and with said drum.
  • Armoring for the drums of tube mills or the like of the type comprising a generally cylindrical drum casing and a plurality of armor plates disposed along the inner drum Wall and extending in the direction of the drum axis, said plates having adjacent inwardly bulging end portions of increased thickness and presenting lateral surfaces having recesses, said recesses of adjacent said plates registering and defining an aperture for an intermediate member therebetween, adjacent said plates being positioned with a gap therebetween, and at least one resilient intermediate member in the form of a helical spring or the like disposed in one said aperture intermediate adjacent plates, and rigid intermediate members in the form of solid rods disposed in the apertures between said adjacent plates and the plates adjacent thereto, said resilient intermediate member being compressible transversely of the longitudinal extent of said plates to yield to forces of heat expansion in adjacent plates while pressing them against said rigid intermediate members and the plates proximate said adjacent plates.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
US852450A 1958-11-19 1959-11-12 Armoring for mill drums or the like Expired - Lifetime US2992782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2992782X 1958-11-19

Publications (1)

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US2992782A true US2992782A (en) 1961-07-18

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ID=8083802

Family Applications (1)

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US852450A Expired - Lifetime US2992782A (en) 1958-11-19 1959-11-12 Armoring for mill drums or the like

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US (1) US2992782A (en:Method)
DE (1) DE1074370B (en:Method)
FR (1) FR1236866A (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110448A (en) * 1961-02-23 1963-11-12 Coors Porcelain Co Ball mills
US3194506A (en) * 1962-03-08 1965-07-13 Ronald F Bourne Renewable elements which are subject to wear by abrasion
WO2019095083A1 (es) * 2017-11-14 2019-05-23 Asesorias Y Servicios Innovaxxion Spa Lifter multicapa para molinos semiautógenos o molinos sag

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708483B1 (fr) * 1993-07-29 1995-10-27 Cambier Benjamin Plaque de blindage à clavettes sphériques pour broyeur à boulets.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US939637A (en) * 1909-02-02 1909-11-09 George H Rotherham Tube-mill lining.
DE399990C (de) * 1923-03-20 1924-08-11 Maschb Anstalt Humboldt Kugelmuehle mit aus Mahlbalken hergestellter Mahlbahn
US1772026A (en) * 1927-02-14 1930-08-05 Clifford O Bartley Grinding mill

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898197A (en) * 1930-02-25 1933-02-21 Rca Corp Reflector for very short waves
DE606885C (de) * 1933-09-14 1934-12-12 American Ball Mill Company Auswechselbare Ausfuetterung, z. B. fuer Rohrmuehlen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US939637A (en) * 1909-02-02 1909-11-09 George H Rotherham Tube-mill lining.
DE399990C (de) * 1923-03-20 1924-08-11 Maschb Anstalt Humboldt Kugelmuehle mit aus Mahlbalken hergestellter Mahlbahn
US1772026A (en) * 1927-02-14 1930-08-05 Clifford O Bartley Grinding mill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110448A (en) * 1961-02-23 1963-11-12 Coors Porcelain Co Ball mills
US3194506A (en) * 1962-03-08 1965-07-13 Ronald F Bourne Renewable elements which are subject to wear by abrasion
WO2019095083A1 (es) * 2017-11-14 2019-05-23 Asesorias Y Servicios Innovaxxion Spa Lifter multicapa para molinos semiautógenos o molinos sag

Also Published As

Publication number Publication date
FR1236866A (en:Method) 1959-06-13
DE1074370B (de) 1960-01-28

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