EP1205249A1 - Broyeur à marteaux pour installation de broyage - Google Patents

Broyeur à marteaux pour installation de broyage Download PDF

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Publication number
EP1205249A1
EP1205249A1 EP01200885A EP01200885A EP1205249A1 EP 1205249 A1 EP1205249 A1 EP 1205249A1 EP 01200885 A EP01200885 A EP 01200885A EP 01200885 A EP01200885 A EP 01200885A EP 1205249 A1 EP1205249 A1 EP 1205249A1
Authority
EP
European Patent Office
Prior art keywords
plant
rotor
rods
hammers
discs
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.)
Granted
Application number
EP01200885A
Other languages
German (de)
English (en)
Other versions
EP1205249B1 (fr
Inventor
Giancarlo Bonfiglioli
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.)
Ing Bonfiglioli SpA
Original Assignee
Ing Bonfiglioli SpA
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Filing date
Publication date
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Application filed by Ing Bonfiglioli SpA filed Critical Ing Bonfiglioli SpA
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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C2013/2808—Shape or construction of beater elements the beater elements are attached to disks mounted on a shaft

Definitions

  • This patent relates to plants for crushing loose materials into small pieces, and in particular plants for crushing ferrous and non-ferrous metal materials originating from the recovery of scrapped materials.
  • Said materials are in the form of compacted parallelepiped pieces obtained by pressing automobile bodies, or of variously shaped pieces deriving from the sectioning of scrapped articles, which require crushing prior to their reuse as a source of raw material, for example prior to their melting and conditioning in blast furnaces which transform them into easily usable ingots.
  • Crushing plants comprise crushers commonly known as hammer crushers, consisting schematically of a cage of metal bars within which a rotor rotates at high rpm.
  • the rotor Hinged to its periphery, the rotor carries a certain number of slabs, commonly known as hammers, which swing about a non-barycentric axis and are maintained facing outwards by centrifugal force.
  • the material to be crushed is struck by said hammers which, either alone or in combination with one or more anvils fixed rigidly to the frame, reduce it into pieces of the desired dimensions.
  • the material pieces obtained in this manner leave through the apertures of the cage and are collected outside.
  • the invention relates particularly to said hammer rotors, which in the known art comprise a central shaft onto which circular plates are fixed, between which the hammer hinge pins are supported.
  • hammers are characterised by a certain moment of inertia about the hinging axis, depending on their length and mass.
  • the effectiveness of the rotor therefore depends essentially on the length of the hammers, i.e. the distance between their barycentre and the hinging axis of the circular plates.
  • the length of the hammers determines the rotor diameter, in that this must be at least double the length of the hammers plus the diameter of the central shaft carrying the plates to which the hammers are hinged.
  • the problem posed to the present patent is to create rotors for crushers of the aforesaid type which for equal hammer dimensions present comparatively very small diametrical dimensions.
  • the invention provides a rotor enabling a crusher to be constructed of such small dimensions as to achieve a substantial reduction in construction and operating costs and to facilitate and simplify plant mobility.
  • Figure 1 is a schematic side view of a crusher according to the invention.
  • Figure 2 is a plan view of a first embodiment of the rotor.
  • Figure 3 is a section on the line III-III of Figure 2.
  • Figure 4 is a section on the line IV-IV of Figure 3.
  • Figure 5 is a plan view of a second embodiment of the rotor.
  • Figure 6 is a section on the line VI-VI of Figure 5.
  • Figure 7 is a section on the line VII-VII of Figure 6.
  • Figure 8 is a schematic plan view of a third embodiment of the rotor.
  • Figure 9 is a section on the line IX-IX of Figure 8.
  • FIGS 10 to 14 are schematic views of other embodiments of the invention.
  • Figure 15 is an axial section through a possible embodiment of the invention.
  • the figures show a crusher comprising an outer casing 1 containing a robust cage formed from a series of substantially circular curved beams 2 known as ribs, interrupted in their upper front region and held together by a series of parallel rectilinear beams 3 known as longitudinal members and connected to the side walls 11 of the casing 1.
  • the ribs 2 and the longitudinal members 3 together form a cage within which there rotates a rotor 4 carrying the hammers 5. At least one of the longitudinal members 3 has larger dimensions than the others, and acts as an anvil against the hammers 5.
  • the rotor 4 comprises a pair of circular end plates 41 each provided with a hub 42 ( Figure 7) aligned with that of the other plate.
  • the plates 41 are joined together by four circumferentially-disposed equidistant peripheral rods 43 on which profiled flat members 44 are mounted to ensure consistency of the assembly and define the space within which the hammers 5 rotate.
  • Each profiled flat member 44 comprises two symmetrical valleys 45 which delimit the space occupied by a hammer 5 during one complete revolution.
  • the profiled members 44 involve only two opposing rods of the four rods 43, and are arranged alternately rotated through 90° to the adjacent profiled members.
  • the thickness of the hammers is obviously just less than the thickness of the profiled flat members, so that when these are clamped together between the end plates 41 the hammers remain free to swing.
  • the second embodiment shown in Figures 5 to 7 comprises a rotor in which those components illustrated in the rotor of Figures 2 to 4 are indicated by the same reference numerals.
  • the rotor of Figures 5 to 7 differs from the rotor of Figures 2 to 4 in that solid discs 6 mounted on the rods 43 are inserted between the profiled members 44 to improve the consistency of the rotor.
  • the profiled members 44 also assume the function of spacers between the discs 6.
  • a rotor such as that illustrated has a diameter of about 900 mm without hammers, these having a length of 350 mm between their end and their hinging point.
  • this rotor can receive hammers having a length equal to 1.66 times the allowable length in a rotor with four rods.
  • Figures 10 to 14 show various alternative embodiments of the invention which differ from those illustrated by the number and arrangement of the rods 43, and by the hammer dimensions.
  • said rods can usefully, in certain cases and for certain particular applications, be in a number different from that shown in Figures 1 to 9, and can be distributed circumferentially at different distances from the centre of the rotor, and without respecting particular symmetries.
  • the rods do not necessarily have to have a length equal to the rotor length, and can be individually limited to just that required for connecting together only two of the discs 6.
  • rods having a length limited to two or more discs these are fixed to said discs, any two consecutive rods not necessarily being aligned in the axial direction.
  • these on the basis of the different rod distributions can be of different number and dimensions either in the same section or in the adjacent sections of the rotor.
  • those circumferences described by the hammer ends can also differ from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP01200885A 2000-11-07 2001-03-09 Broyeur à marteaux pour installation de broyage Expired - Lifetime EP1205249B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE200112 2000-11-07
IT2000RE000112A IT1319442B1 (it) 2000-11-07 2000-11-07 Rotore a martelli per impianto di frantumazione

Publications (2)

Publication Number Publication Date
EP1205249A1 true EP1205249A1 (fr) 2002-05-15
EP1205249B1 EP1205249B1 (fr) 2008-04-30

Family

ID=11453987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01200885A Expired - Lifetime EP1205249B1 (fr) 2000-11-07 2001-03-09 Broyeur à marteaux pour installation de broyage

Country Status (5)

Country Link
EP (1) EP1205249B1 (fr)
AT (1) ATE393664T1 (fr)
DE (1) DE60133796T2 (fr)
ES (1) ES2305026T3 (fr)
IT (1) IT1319442B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007125557A1 (fr) * 2006-05-03 2007-11-08 Tierre S.R.L. Nouvelle unite de couteau/broyage pour machines de broyage agricoles et industrielles
CN103831148A (zh) * 2014-02-24 2014-06-04 常熟中材装备重型机械有限公司 转子机构改进的可逆式无篦子锤式破碎机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1367278A (en) * 1972-04-18 1974-09-18 Tongaat Sugar Pty Ltd Hammer mills and shredders
GB1502154A (en) * 1974-04-18 1978-02-22 Peters Ag Claudius Hammermill rotor
US4917314A (en) * 1987-03-25 1990-04-17 Thyssen Industrie Ag Rotor for a hammer mill
US5141167A (en) * 1991-05-28 1992-08-25 Slvyer Steel Corporation Heavy duty disc-spider assembly for a hammermill
EP0873791A2 (fr) * 1997-04-24 1998-10-28 Svedala Industries, Inc. Rotor pour déchiqueteurs et broyeurs à marteaux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1367278A (en) * 1972-04-18 1974-09-18 Tongaat Sugar Pty Ltd Hammer mills and shredders
GB1502154A (en) * 1974-04-18 1978-02-22 Peters Ag Claudius Hammermill rotor
US4917314A (en) * 1987-03-25 1990-04-17 Thyssen Industrie Ag Rotor for a hammer mill
US5141167A (en) * 1991-05-28 1992-08-25 Slvyer Steel Corporation Heavy duty disc-spider assembly for a hammermill
EP0873791A2 (fr) * 1997-04-24 1998-10-28 Svedala Industries, Inc. Rotor pour déchiqueteurs et broyeurs à marteaux

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007125557A1 (fr) * 2006-05-03 2007-11-08 Tierre S.R.L. Nouvelle unite de couteau/broyage pour machines de broyage agricoles et industrielles
CN103831148A (zh) * 2014-02-24 2014-06-04 常熟中材装备重型机械有限公司 转子机构改进的可逆式无篦子锤式破碎机

Also Published As

Publication number Publication date
DE60133796D1 (de) 2008-06-12
ES2305026T3 (es) 2008-11-01
EP1205249B1 (fr) 2008-04-30
DE60133796T2 (de) 2009-06-25
ATE393664T1 (de) 2008-05-15
ITRE20000112A0 (it) 2000-11-07
ITRE20000112A1 (it) 2002-05-07
IT1319442B1 (it) 2003-10-10

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