EP4284561A1 - Rotor à marteaux et appareil de fragmentation pour fragmenter une dalle de pierre entière - Google Patents

Rotor à marteaux et appareil de fragmentation pour fragmenter une dalle de pierre entière

Info

Publication number
EP4284561A1
EP4284561A1 EP22705129.9A EP22705129A EP4284561A1 EP 4284561 A1 EP4284561 A1 EP 4284561A1 EP 22705129 A EP22705129 A EP 22705129A EP 4284561 A1 EP4284561 A1 EP 4284561A1
Authority
EP
European Patent Office
Prior art keywords
hammers
hammer rotor
hammer
fragmenting
stone slab
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.)
Pending
Application number
EP22705129.9A
Other languages
German (de)
English (en)
Inventor
Eliseu Manuel VICENTE FRAZÃO
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.)
Fravizel Equipamentos Metalomecanicos SA
Original Assignee
Fravizel Equipamentos Metalomecanicos 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 Fravizel Equipamentos Metalomecanicos SA filed Critical Fravizel Equipamentos Metalomecanicos SA
Publication of EP4284561A1 publication Critical patent/EP4284561A1/fr
Pending legal-status Critical Current

Links

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
    • B02C13/26—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
    • B02C13/02—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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/146—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with a rotor comprising a plurality of axially contiguous disc-like segments each having at least one radially extending cutting element

Definitions

  • the present invention is enclosed in the area of devices for fragmenting stone and hammer rotors for such devices, which are used for fragmenting stone.
  • Fragmenting stone refers to the shredding of a stone material into smaller pieces by the repeated impacts of hammers of reduced dimension.
  • the solutions known in the art are defined by a vertical arrangement suitable for crushing/milling, in which an inlet is provided above, a hammer rotor is provided centrally, and an outlet is provided below.
  • a grid is provided such that only stone pieces fall onto the hammer rotor.
  • the hammer rotor has fixed hammers which then crush the stone pieces against a second grid, thereby further crushing/milling the stone pieces.
  • the present solution innovatively overcomes such issues by providing, simultaneously, the fragmenting a whole stone slab with more than 2.000 mm at a lower power consumption and reduced noise.
  • a hammer rotor for a fragmenting apparatus which comprises a rotatable inner shaft and at least two outer axles, wherein the outer axles are i) connected and parallel to the inner shaft thereby being jointly rotatable with the inner shaft and are ii) provided at a respective radius from the inner shaft, wherein the hammer rotor further comprises a plurality of hammers which are coupled to an outer axle, the hammers further being freely rotatable around a respective outer axle.
  • the inner shaft of the hammer rotor of the present invention is able to rotate, thereby defining an inner axle of the hammer rotor.
  • Two or more outer axles are fixedly or jointly connected to the inner shaft, thereby being jointly rotatable with the inner shaft.
  • Such outer axles define axles of rotation for a plurality of hammers, which simultaneously rotate with the outer axles / inner shaft ensemble but are also freely rotatable around a respective outer axle.
  • the outer axles are provided at a respective radius from the axle, meaning that all outer axles are at a predefined distance from the inner shaft, such distance typically being the same for all outer axles.
  • the hammers may be provided in a section of a hammer rotor against which a stone slab is provided.
  • a stone slab is provided horizontally against the hammer rotor of the present invention the freely rotatable hammers continuously wear it, fragmenting it into pieces.
  • the hammers of the rotor of the present invention are freely rotatable, and thus allow to fragment a whole stone slab with a much lower power consumption.
  • a hammer rotor according to the present invention may lead to a fragmenting apparatus with a 7.5 kW / 10 hp power.
  • a solution as those known in the art would require much more horsepower to provide the same result, not to mention the wear of the machine which results from grinding fixed hammers against a whole stone slab.
  • a fragmenting apparatus for fragmenting a whole stone slab which comprises the hammer rotor of the present invention, in any of its embodiments, as well as a housing, an inlet and an outlet, the hammer rotor being so provided in the housing that i) a stone slab provided through the inlet is crushed by a rotation movement of the hammers of the hammer rotor and ii) crushed bits resulting from the crushing of the stone slab leave the housing through the outlet.
  • the fragmenting apparatus implements the innovative configuration of the hammer rotor.
  • the inlet is provided substantially perpendicularly to the outlet, the inlet being preferably arranged horizontally and the outlet being preferably arranged vertically.
  • It is yet an object of the present invention a method for crushing a whole stone slab with the fragmenting apparatus of the present invention comprising the steps of providing a stone slab at the inlet the fragmenting apparatus, crushing such stone slab continuously through the rotation of the hammer rotor against the stone slab and obtaining crushed bits of the stone slab at the outlet of the fragmenting apparatus.
  • the method implements the innovative configuration of the hammer rotor and fragmenting apparatus of the present invention.
  • FIG. 1 - representation of an embodiment of the hammer rotor (10) of the present invention.
  • the hammer rotor has an inner shaft (11) to which four outer axles (12) are connected by means of a plurality of locking plates (14) which also restrain each hammer (13) from moving along the respective outer axle (12).
  • a plurality of hammers (13) is provided along the four outer axles (12), each two hammers (13) provided next to each other being spaced apart.
  • a spacer (15) is provided between each two locking plates (14), and thus also between each two hammers (13).
  • the rotor (10) has two hammers (13) per group of hammers.
  • the rotor (10) further comprises two wheels: a first wheel (16) for the connection to means for powering the rotation of the hammer rotor (10) and a second wheel (17) for coupling and aligning the hammer rotor with a fragmenting apparatus.
  • FIG 2 - representation of an embodiment of the fragmenting apparatus (20) of the present invention, in cross-section view.
  • the fragmenting apparatus (20) comprises a hammer rotor (10) provided in its housing, between an inlet (21) on the right and an outlet (22) provided below.
  • the inlet (21) is arranged in parallel with the hammer rotor (10).
  • a stone slab provided through the inlet (21) is crushed by a rotation movement of the hammers (13-1, 13-2) of the hammer rotor (10), crushed bits resulting from the crushing of the stone slab fall through the ramp channel (25) and leave the housing of the through the outlet (22).
  • the hammer rotor (10) corresponds to that of Figure 1, thereby having four axles.
  • the fragmenting apparatus (20) further comprises means for powering the rotation (24) of the hammer rotor (10), which are connected and power the rotation of the hammer rotor (10), rotating the inner shaft (11).
  • the means for powering the rotation (24) may be connected to a first wheel (16) as that presented in Figure 1.
  • the fragmenting apparatus (20) further comprises a base (26) which is provided with means for anchoring (27) the fragmenting apparatus (20) to the ground.
  • a plurality of hammers is connected along a same outer axle.
  • each two hammers provided next to each other in a same outer axle are spaced apart of a predefined distance. Such allows that freely rotating hammers are easily provided.
  • the hammer rotor for each 2n or 2n+l outer axles, in which n is an integer equal or higher than 1, the hammer rotor comprises n hammers provided both in a) a same position with regard to the length of the inner shaft and b) different outer axles forming a group of hammers.
  • the hammers are provided along outer axles, which in turn are connected to and are parallel to the inner shaft.
  • the hammers are arranged along such length, as along an imaginary cartesian axis.
  • two hammers may be provided in the same position with respect to the referred length of the inner shaft, thus enabling that a rotating hammer has as many hammer hits in a stone slab as the number of hammers provided in a same position with respect to the length of the inner shaft, improving the efficiency of the rotor.
  • Such number of hammers provided in a same position are related to the number of outer axles. For a case of four axles, n equals two, meaning two hammers in a same position with respect to the length of the inner shaft.
  • a stone slab is hit by two hammers.
  • a group of hammers is defined for each one or more hammers provided in a same position with respect to the length of the inner shaft.
  • each group of hammers contains two hammers.
  • each group of n hammers is coupled to respective outer axles such that is rotated of an angle of 360°/2n with respect to each adjacent group of hammers connected to other outer axles, wherein adjacent groups of hammers are thereby recurrently interchanged.
  • each two adjacent groups of hammers provide four hits at four different times at each rotation (two per group of hammers, the hammers being interchanged in different positions by the referred angle of rotation), thereby improving even further the efficiency of the hammer rotor.
  • the rotation between each two groups of hammers is of 360°/2x2 equalling a rotation of 90°.
  • the hammer rotor further comprises a plurality of locking plates, each group of hammers being flanked by two locking plates which are connected to the outer axles and restrain each hammer from moving along the respective outer axle.
  • the locking plates may provide the connection between the outer axles and the inner shaft.
  • the hammer rotor further comprises a plurality of spacers, each spacer being connected to an outer axle and provided between two locking plates, thereby providing that two hammers provided next to each other in a same outer axle are spaced apart of a predefined distance.
  • the hammer rotor comprises more than two outer axles, preferably 4, 6 or 8 outer axles.
  • the hammers are made of a same material, the material of the hammers being denser than the material of the inner shaft and the outer axles.
  • the hammers comprise a metal, preferably a heavy metal, more preferably comprising steel or manganese.
  • each hammer has a plane edge provided oppositely to the coupling to the respective outer axle.
  • a full width of the hammers defined by the sum of all the groups of hammers along the inner shaft is of 1.500 to 3.000 mm, preferably of 1.750 to 2.350 mm, more preferably of 2.200 mm.
  • the shaft of the hammer rotor is arranged in parallel with the inlet of the fragmenting apparatus.
  • the inlet has a width of 1.500 to 3.000 mm, preferably of 1.750 to 2.350 mm, more preferably of 2.200 mm and/or a height of 30-140 mm, more preferably 40-120 mm, even more preferably of 35-65 mm or 75-125 mm.
  • the fragmenting apparatus further comprises means for powering the rotation of the hammer rotor, such means being coupled to the inner shaft of the hammer rotor.
  • the means are automated and have a power 7 to 25 kW, more preferably 7-15 kW, even more preferably 7 or 15 kW.
  • the fragmenting apparatus of the present invention is thereby able to run a power which is considerably lower than those of the solutions known in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

La présente invention est enfermée dans la zone des dispositifs pour la fragmentation de pierre et des rotors à marteaux pour de tels dispositifs qui sont utilisés pour fragmenter de la pierre. Un objet de la présente invention est un rotor à marteaux pour un appareil de fragmentation qui comprend un arbre interne rotatif et au moins deux essieux externes. Les essieux externes sont i) reliés et parallèles à l'arbre interne, de façon à pouvoir tourner conjointement avec l'arbre interne, et sont ii) disposés à un rayon respectif par rapport à l'arbre interne, le rotor à marteaux comprenant en outre une pluralité de marteaux qui sont accouplés à un essieu externe, les marteaux pouvant en outre tourner librement autour d'un essieu externe respectif. La présente solution résout de manière innovante de tels problèmes en assurant, simultanément, la fragmentation en morceaux d'une dalle de pierre entière de plus de 2000 mm avec une consommation d'énergie inférieure.
EP22705129.9A 2021-01-29 2022-01-25 Rotor à marteaux et appareil de fragmentation pour fragmenter une dalle de pierre entière Pending EP4284561A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT11703521 2021-01-29
PCT/IB2022/050624 WO2022162521A1 (fr) 2021-01-29 2022-01-25 Rotor à marteaux et appareil de fragmentation pour fragmenter une dalle de pierre entière

Publications (1)

Publication Number Publication Date
EP4284561A1 true EP4284561A1 (fr) 2023-12-06

Family

ID=80787156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22705129.9A Pending EP4284561A1 (fr) 2021-01-29 2022-01-25 Rotor à marteaux et appareil de fragmentation pour fragmenter une dalle de pierre entière

Country Status (2)

Country Link
EP (1) EP4284561A1 (fr)
WO (1) WO2022162521A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987971A (en) * 1974-04-29 1976-10-26 Mcclure Orlie Bob Rock crusher
DE4016295A1 (de) 1990-05-21 1991-11-28 Lindemann Maschfab Gmbh Hammerbrecher
CA2216389A1 (fr) * 1997-04-24 1998-10-24 John J. Martinek Rotor pour dechiqueteurs et broyeurs a marteaux
EP2457662B1 (fr) 2010-11-26 2014-01-01 Metso Lindemann GmbH Grille pour concasseur à marteaux
US9855560B2 (en) * 2012-05-18 2018-01-02 Esco Corporation Hammer for shredding machines

Also Published As

Publication number Publication date
WO2022162521A1 (fr) 2022-08-04

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