US3785576A - Grinding mill - Google Patents

Grinding mill Download PDF

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Publication number
US3785576A
US3785576A US00883078A US88306969A US3785576A US 3785576 A US3785576 A US 3785576A US 00883078 A US00883078 A US 00883078A US 88306969 A US88306969 A US 88306969A US 3785576 A US3785576 A US 3785576A
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US
United States
Prior art keywords
plate
base
grinding mill
gearing
track
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
US00883078A
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English (en)
Inventor
J Desbordes
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.)
Stein Industrie SA
Original Assignee
Stein Industrie SA
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
Application filed by Stein Industrie SA filed Critical Stein Industrie SA
Application granted granted Critical
Publication of US3785576A publication Critical patent/US3785576A/en
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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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/02—Centrifugal pendulum-type mills

Definitions

  • the grinding mill includes a chamber having a rolling Dec 9 [968 France 68 H718 track and a base beneath the track.
  • a plate within the base carries a roller engaging the track, and reduction gearing secured to the base rotate the plate.
  • the out- (g1. put shaft of the gear is connected directly to the plate.
  • An air duct carries compressed air to a passage [58] Fleld of Search 241/47, 57, 62 fined y an annular Shoulder depending from the 56] References Cited plate.
  • An opening in the base admits air required for d UNITED STATES PATENTS gm mg 1,781,572 11/1930 Drummond 241/47 3 Claims, 1 Drawing Figure PATENTEBJAN 1 5 .974
  • UOHDES JEAN GRINDING MILL This invention relates to a grinding mill equipped with rollers carried by a rotary plate located at the bottom of the said grinding mill and adapted to cooperate, under the action of centrifugal force, with a rolling path situated at a higher level than that of the plate.
  • Driving of the plate in rotation is effected by a vertical shaft extending below the said plate and driven from a horizontal driving shaft through the intermediary of suitable reduction gearing.
  • the applicant has found that it is possible to increase the simplicity and lightness of the apparatus by equipping the grinding mill with reduction gearing of conventional type, preferably a .commercial reduction gearing, and coupling the roller-carrying plate directly to the output shaft of the reduction gearing.
  • the output shaft of the reduction gearing serves also as the driving shaft of the plate, and the radial and axial bearings of the reduction gearing are utilized for both supporting and rotating the plate.
  • the apparatus will be lighter and that in the event of wear or damage of the bearings it is sufficient to uncouple the plate from the output shaft of the reduction gearing and to perform a standard exchange of the reduction gearing.
  • a supply duct for air under pressure intended to prevent dust in the interior of the grinding mill from reaching the shaft of the reduction gearing and penetrating into it.
  • the air at a suitable pressure relative to the pressure obtaining in the grinding mill, is fed to the vicinity of the output shaft of the reduction gearing, under the plate into a passage formed as an annular duct resulting from a suitable shoulder provided on the lower face of the plate.
  • 1 indicates the chamber of circular section of a grinding mill the base la of which has an inlet 23 for the introduction of theair required for the grinding operation.
  • the air enters a chamber in which the air is distributed by means of fixed blades, here the entry of air takes place directly without blading, which increases the simplicity and lightness of the apparatus.
  • the lower part of the chamber 1 supports a fixed rolling track 4 of high resistance steel.
  • rollers 11 which are adapted to be applied by centrifugal force to the rolling track 4, are carried by a plate 10 situated at the lower part of the base In.
  • each roller 11 is movable around an axis one end of which is solid with a stirrup 14 which can swing about pivots such as 15 carried by the plate 10.
  • blades 18 or any other device adapted to throw the coarse product on to the rolling track of the rollers may be solid with the plate 10.
  • the plate 10 carrying the pendular bodies is made solid with the shaft 24 by keying or any other suitable means.
  • the vertical output shaft 24 is journalled in bearings such as 27 and 27', the latter forming thrust bearings, and carries a gear wheel 28 engaged with a pinion 29 solid with a secondary shaft 30 which also carries a bevel gear 31.
  • the latter is engaged with a bevel pinion 32 carried by the input shaft 33 of the reduction gearing, which is driven in rotation by a suitable motor.
  • an air duct 34 which opens at 35 beneath the plate 10 and in the vicinity of the shaft 24.
  • This air at a suitable pressure relative to the pressure obtaining in the grinding mill owing to the introduction of grinding air through the opening 23, passes into an annular passage formed by an annular shoulder 36 on the lower face of the plate 10. This circulation of air prevents dust from reaching the shaft 24 and penetrating into the reduction gearing 25.
  • a grinding mil comprising a housing defining a grinding chamber with a bottom base, a rotatable plate located immediately above the bottom base in said chamber, a rolling track fixed in said housing at a level above said plate, at least one roller pivotably supported on said plate for traveling along said track as the plate rotates, a source of rotary power for said plate, and reduction gearing between said power source and said plate, said gearing being secured to said bottom base and the output shaft of said gearing being coupled directly to said plate.
  • a grinding mill as defined in claim 1 including an annular shoulder projecting downwardly from the lower face of said plate, and a duct for air under pressure, said duct passing through said reduction gearing and opening in the vicinity of said gearing output shaft beneath said plate, into a passage formed by said shoulder.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
US00883078A 1968-12-09 1969-12-08 Grinding mill Expired - Lifetime US3785576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR177181 1968-12-09

Publications (1)

Publication Number Publication Date
US3785576A true US3785576A (en) 1974-01-15

Family

ID=8657993

Family Applications (1)

Application Number Title Priority Date Filing Date
US00883078A Expired - Lifetime US3785576A (en) 1968-12-09 1969-12-08 Grinding mill

Country Status (6)

Country Link
US (1) US3785576A (enrdf_load_stackoverflow)
BE (1) BE742570A (enrdf_load_stackoverflow)
DE (2) DE6947529U (enrdf_load_stackoverflow)
ES (1) ES374303A2 (enrdf_load_stackoverflow)
FR (1) FR96341E (enrdf_load_stackoverflow)
GB (1) GB1288969A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD332929S (en) 1991-02-22 1993-02-02 Innovative Bicycle Products, Inc. Key for bicycle handlebar lock
US20220055037A1 (en) * 2020-08-24 2022-02-24 Williams Patent Crusher And Pulverizer Company Vertical roller mill segmented bull ring and clamping system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726378A1 (de) * 1977-06-10 1978-12-14 Indutec Industrietechnik Gmbh Fliehkraft-rollenmuehle
DE3335817A1 (de) * 1983-10-01 1985-04-11 Fritz Sauerwald Fabrik für Getriebebau, 5600 Wuppertal Pendelmuehlengetriebe
US5975448A (en) * 1998-07-10 1999-11-02 Gygi; Martin H. Mill

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US335574A (en) * 1886-02-09 fulleb
US1781572A (en) * 1929-04-24 1930-11-11 Ashington Coal Company Ltd Apparatus for pulverizing coal and like substances
US3093327A (en) * 1962-05-23 1963-06-11 Babcock & Wilcox Co Pulverizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US335574A (en) * 1886-02-09 fulleb
US1781572A (en) * 1929-04-24 1930-11-11 Ashington Coal Company Ltd Apparatus for pulverizing coal and like substances
US3093327A (en) * 1962-05-23 1963-06-11 Babcock & Wilcox Co Pulverizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD332929S (en) 1991-02-22 1993-02-02 Innovative Bicycle Products, Inc. Key for bicycle handlebar lock
US20220055037A1 (en) * 2020-08-24 2022-02-24 Williams Patent Crusher And Pulverizer Company Vertical roller mill segmented bull ring and clamping system
US11731138B2 (en) * 2020-08-24 2023-08-22 Williams Patent Crusher And Pulverizer Company Vertical roller mill segmented bull ring and clamping system

Also Published As

Publication number Publication date
BE742570A (enrdf_load_stackoverflow) 1970-05-14
FR96341E (fr) 1972-06-16
DE1961511A1 (de) 1970-12-03
DE6947529U (de) 1973-06-20
GB1288969A (enrdf_load_stackoverflow) 1972-09-13
ES374303A2 (es) 1971-12-16

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