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WO2025233708A1 - Procédé et installation de broyage de matériaux récupérés - Google Patents

Procédé et installation de broyage de matériaux récupérés

Info

Publication number
WO2025233708A1
WO2025233708A1 PCT/IB2025/053518 IB2025053518W WO2025233708A1 WO 2025233708 A1 WO2025233708 A1 WO 2025233708A1 IB 2025053518 W IB2025053518 W IB 2025053518W WO 2025233708 A1 WO2025233708 A1 WO 2025233708A1
Authority
WO
WIPO (PCT)
Prior art keywords
shredding
conveying direction
feed channel
outlet port
rotor
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
PCT/IB2025/053518
Other languages
English (en)
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 Srl
Original Assignee
ING BONFIGLIOLI Srl
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 ING BONFIGLIOLI Srl filed Critical ING BONFIGLIOLI Srl
Publication of WO2025233708A1 publication Critical patent/WO2025233708A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B02C13/286—Feeding or discharge
    • 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
    • B02C18/16—Details
    • 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
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • 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
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • 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
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2233—Feed means of ram or pusher type
    • 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
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2241—Feed means of conveyor belt type
    • 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
    • B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
    • B02C19/0062—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for specially adapted for shredding scrap metal, e.g. automobile bodies
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28609—Discharge means
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means
    • B02C2013/28627—Feeding means of ram or pusher type
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means
    • B02C2013/28672—Feed chute arrangements

Definitions

  • the present invention concerns crushing recovered materials, mainly but not necessarily of a metallic nature (e.g. ferrous), which may come from the recovery of materials sent for scrapping and/or which may be destined to be transformed into new raw material, for example by melting and/or conditioning in a blast furnace.
  • the present invention concerns a method and a corresponding plant for carrying out the aforementioned crushing.
  • the aforementioned recovered materials can be in the form of parallelepiped bodies obtained by compacting car bodies, variously shaped pieces from the dismemberment of scrapped products and/or other industrial waste (e.g. ferrous).
  • plants that generally comprise a feed channel for the material to be crushed and at least one shredding motor placed to intercept an outlet port of said feed channel.
  • the shredding motor carries a number of plates, commonly called hammers, which are adapted to oscillate with respect to an eccentric axis with respect to the rotor axis and are kept facing outwards by centrifugal forces.
  • the material to be crushed, advancing towards the outlet port of the feed channel, is hit by said hammers which reduce it into small fragments.
  • Other plants may comprise a pair of parallel, adjacent, and counter-rotating shredding rotors, each of which comprises a plurality of peripheral shredding teeth.
  • shredding motors must intercept the outlet port of the feed channel completely, that is, throughout its entire extension.
  • the outlet port has often relatively large sizes, for example to allow the passage of somewhat bulky compacted parallelepiped bodies (e.g. of width greater than 1 m), this entails the need for the shredding rotors to have correspondingly large sizes.
  • Another feature common to the plants outlined above consists in the fact that the tools associated with the shredding motors, for example the hammers or the shredding teeth, are able to act only frontally and only on the portions of material with which they are aligned along the conveying direction defined by the feed channel.
  • shredding motors have extremely large sizes which, in addition to increasing the overall sizes of the plant, also increase the inertia involved and, consequently, require the adoption of very powerful motors (e.g. diesel engines up to 700 HP), making the current crushing plants quite complex, expensive, bulky, difficult to transport and generally very noisy.
  • very powerful motors e.g. diesel engines up to 700 HP
  • An object of the present invention is to solve or at least mitigate one or more of the aforementioned drawbacks, allowing the realization of crushing plants that are simpler, more compact, cheaper and/or more efficient than those currently known.
  • Another object is to achieve the aforesaid objective in the context of a rational and low cost solution.
  • one embodiment of the present invention provides a method for crushing recovered materials (e.g. scrap), comprising the steps of:
  • the interaction between the materials to be crushed and the shredding motor does not occur only as a result of a mutual displacement in the conveying direction, as occurs in the prior art, but as a combined effect of both the displacement in the conveying direction and the displacement in the transverse direction.
  • the shredding motor no longer works only frontally but also laterally, for example with the shoulders of the respective tools, obtaining an effective and complete crushing even with a lower number of tools than that of the prior art.
  • one aspect of the invention provides that the shredding rotor can be sized to intercept a limited portion of the material advancement front and that it can be adapted to intercept the entire material advancement front due to the effect of the aforementioned relative movement in the transverse direction.
  • the sizes of the shredding motor can be reduced extremely significantly, without compromising the complete and efficient crushing of the treated materials.
  • said relative movement in the transverse direction, between the advancement front and the shredding rotor can comprise (or be) a substantially translational movement along a direction perpendicular to the conveying direction.
  • the relative movement in the transverse direction may comprise (or be) a substantially rotary movement around an axis parallel to the conveying direction.
  • the movement in the transverse direction may comprise (or be) a substantially oscillatory movement around an axis perpendicular to the conveying direction.
  • Another aspect of the invention provides that said relative movement in the transverse direction can be obtained by actively moving the material advancement front with respect to the shredding rotor.
  • the invention also makes available a corresponding plant for crushing recovered materials (e.g. scrap), comprising: - a feed channel adapted to convey said materials along a predetermined conveying direction towards an outlet port of the feed channel,
  • - movement means adapted to create a relative movement of said shredding rotor and said feed channel, or at least of a portion of said feed channel comprising said outlet port, in a transverse direction relative to the conveying.
  • the shredding rotor can be sized to intercept a limited portion of said outlet port of the feed channel, and may be adapted to fully intercept said outlet port of the feed channel by said relative movement in the transverse direction.
  • Said movement in the transverse direction may comprise (or be) a substantially translational movement along a direction perpendicular to the conveying direction (for example parallel to the rotation axis of the shredding rotor), and/or a substantially rotary movement around an axis parallel to the conveying direction, and/or a substantially oscillatory movement around an axis perpendicular to the conveying direction (and possibly also perpendicular to the rotation axis of the shredding rotor).
  • the movement means may be adapted to obtain said movement in the transverse direction by actively moving the feed channel, or at least a portion of the feed channel comprising the outlet port, relative to the shredding rotor.
  • the shredding rotor can carry a plurality of crushing tools eccentrically with respect to its rotation axis.
  • crushing tools can for example be hammers hinged to the rotor according to axes parallel to the rotation axis and spaced from it (eccentric).
  • the crushing tools may however be shredding teeth attached to the rotor.
  • the plant may comprise two of the aforementioned shredding motors, which are arranged mutually side by side and counter-rotating.
  • the advancement of the materials to be crushed along the conveying channel can only take place by gravity.
  • the plant may instead comprise further movement means, for example a pusher member, adapted to advance the materials in the feed channel along said predetermined conveying direction and towards said outlet port.
  • further movement means for example a pusher member, adapted to advance the materials in the feed channel along said predetermined conveying direction and towards said outlet port.
  • Figure 1 is an axonometric view of a crushing plant according to an embodiment of the present invention.
  • Figure 2 is a side view of the crushing plant of figure 1 .
  • Figure 3 is a longitudinal section of a portion of the crushing plant of figure 1 carried out according to the plane Ill-Ill indicated in figure 4.
  • Figure 4 is the section IV-IV indicated in figure 3.
  • Figure 5 is the section of figure 4 shown with the bulkheads 180 in a different position during their movement.
  • Figure 6 is a longitudinal section of a crushing plant according to a different embodiment of the invention, carried out according to plane VI-VI of figure 7.
  • Figure 7 is the section VII-VII of figure 6.
  • Figure 8 is a cross-section of a crushing plant according to a third embodiment of the invention, carried out according to plane VIII-VI II of figure 7.
  • Figures 9 and 10 are a side view of the crushing plant of figure 7 shown at two different times during operation.
  • recovered materials means materials, mainly but not necessarily of a metallic nature (e.g. ferrous), which may come from the recovery of industrial waste and/or from the recovery of materials sent for scrapping.
  • the recovered materials treated with the crushing plants described below may be materials which, after crushing, are intended to be transformed into new raw material, for example by melting and/or blast furnace conditioning.
  • the aforementioned recovered materials can be in the form of parallelepiped bodies obtained by compacting car bodies, variously shaped pieces from the dismemberment of scrapped products and/or other industrial waste (e.g. metal).
  • a plant 100 In order to crush such recovered materials, a plant 100 according to the present invention generally comprises a feed channel 105 for the material to be crushed.
  • this feed channel 105 can extend longitudinally along a predetermined conveying direction A and have, at one end thereof, along said conveying direction A, an outlet port 110.
  • the material to be crushed contained in the feed channel 105 can be advanced along the conveying direction A towards the outlet port 110.
  • the introduction of the material to be crushed can take place through an inlet port 115 of the feed channel 105, which can be obtained above along the feed channel 105 or can be opposed to the outlet port 110 with respect to the conveying direction A.
  • the advancement of the material to be crushed along the conveying direction A can take place by gravity and/or by appropriate movement means 120, hydraulically, electrically operated and/or of any other type, adapted to actively act on the material to be crushed to advance it towards the outlet port 110.
  • the plant 100 also comprises at least one shredding motor 150, which is adapted to rotate around a predetermined rotation axis B, for example orthogonal to the conveying direction A.
  • This shredding motor 150 is adapted to intercept (i.e. to receive in contact) the material advancement front advancing along the conveying direction A.
  • the shredding rotor 150 can be positioned in front of the outlet port 110 of the feed channel 105, so as to face said outlet port 110 with respect to the conveying direction A.
  • the shredding motor 150 is generally adapted to cause the crushing thereof.
  • the shredding motor 150 may be provided with a plurality of peripheral crushing tools (i.e. arranged around the rotation axis B), such as for example hammers or shredding teeth.
  • the rotation of the shredding motor 150 and, with it, that of the relative crushing tools can be driven by a motor 155, preferably an internal combustion engine (e.g. diesel).
  • a motor 155 preferably an internal combustion engine (e.g. diesel).
  • the shredding rotor 150 is housed inside a containment casing 160, into which the outlet port 110 of the feed channel 105 leads.
  • This containment casing 160 can in turn be provided with an inlet port 165, directly communicating with the outlet port 110 of the feed channel 105, and with one or more further outlet openings for discharging the crushed materials to the outside.
  • the inlet port 165 of the containment casing 160 is preferably positioned in front of the shredding rotor 150, so that the latter faces it along the conveying direction A.
  • the shredding rotor 150 (or at least the portion thereof carrying the crushing tools) may be sized to intercept (in the sense of receiving in contact) only a limited (reduced) portion of the material advancement front to be crushed, i.e. so as to intercept (in the sense of facing) only a limited (reduced) portion of the outlet port 110 of the feed channel 105.
  • the axial extension of the shredding motor 150 (or at least of the portion thereof carrying the crushing tools), in a direction parallel to the rotation axis B, may be less than the width of the material advancement front to be crushed, i.e. the width of the outlet port 110 of the feed channel 105, in the same direction.
  • the axial extension of the shredding rotor 150 may be substantially equal to (or slightly less than) the width, in a direction parallel to the rotation axis B, of the inlet port 165 of the containment casing 160, which may in turn be smaller than the width, in the same direction, of the outlet port 110 of the feed channel 105.
  • the invention therefore provides for creating a relative movement between said advancement front and the shredding motor 150 transverse the conveying direction A.
  • Relative movement in the transverse direction generally refers to any relative movement that has at least one displacement component in a plane perpendicular to the conveying direction A of the material to be crushed.
  • such relative movement may be or comprise: a substantially translational movement along a direction perpendicular to the conveying direction A, e.g. parallel to the rotation axis B of the shredding rotor 150; and/or a substantially rotary movement about an axis parallel to the conveying direction A; and/or a substantially oscillatory movement about an axis perpendicular to the conveying direction A, e.g. perpendicular to both the conveying direction A and the rotation axis B of the shredding rotor 150.
  • the relative movement can be obtained by actively moving the material advancement front to be crushed (i.e. the outlet port 110 of the feed channel 105) with respect to the shredding motor 150, as well as with respect to the possible containment casing 160 and the relative inlet port 165, which can remain stationary (unless, of course, the rotation of the shredding motor 150).
  • the relative movement can be obtained by actively moving the shredding motor 150 (together with the possible containment casing 160 and the relative inlet port 165), with respect to the material advancement front to be crushed (i.e. with respect to the outlet port 110 of the feed channel 105), or by actively moving both the shredding motor 150 (together with the possible containment casing 160 and the relative inlet port 165) and the material advancement front to be crushed (i.e. the outlet port 110 of the feed channel 105).
  • the feed channel 105 comprises a substantially flat base wall 125, from which two mutually opposed and for example parallel side walls 130 rise, between which an internal cavity remains defined that is closed at the bottom by the base wall 125.
  • Both the base wall 125 and the side walls 130 and, consequently, the internal cavity of the feed channel 105, extend mainly in a direction parallel to the conveying direction A and define the outlet port 110 at one end thereof.
  • the feed channel 105 may further comprise an upper wall 135, opposed the base wall 125, which is adapted to close the internal cavity of the feed channel 105 at the top, at least at the outlet port 110.
  • the internal cavity of the feed channel 105 can be opened at the top, so as to define the aforementioned inlet port 115 through which to receive from the outside the material to be crushed.
  • the movement means 120 may comprise a pusher 140, opposed the outlet port 110 along the conveying direction A, and actuator means (not illustrated), for example a hydraulic cylinder or other, adapted to slide said pusher 140 inside and along the feed channel 105, with reciprocating motion in the conveying direction A, towards and away from the outlet port 110.
  • actuator means for example a hydraulic cylinder or other, adapted to slide said pusher 140 inside and along the feed channel 105, with reciprocating motion in the conveying direction A, towards and away from the outlet port 110.
  • the pusher 140 while the pusher 140 is in a retracted position, for example on the opposite side of the inlet port 115 with respect to the outlet port 110, the material to be crushed can be introduced into the feed channel 105 through the inlet port 115, after which, the pusher 140 can be advanced so as to push said material in the conveying direction A towards the outlet port 110.
  • the shredding rotor 150 (which may be only one) is preferably a hammer rotor.
  • a support body 145 adapted to rotate around the rotation axis B, to the periphery of which a number of plates 170, commonly called hammers, are hinged.
  • These plates 170 are individually adapted to oscillate around a respective oscillation axis, eccentric with respect to the rotation axis B of the support body 145, and are kept facing outwards by the centrifugal forces to which they are subjected during rotation.
  • each hammer can be defined by a shaped plate 170, having for example sharp edges, which lies in a plane orthogonal to the rotation axis B of the support body 145 and is hinged to the latter according to a parallel oscillation axis and spaced from the rotation axis B.
  • the shaped plates 170 may all be equal to each other, as well as the distances of the respective oscillation axes from the rotation axis B of the support body 145 may be equal. Each shaped plate 170 can be received in an inlet 175 of the support body 145, within which it can make a full rotation of 360° about the respective oscillation axis.
  • Each oscillation axis is non-baricentric with respect to the corresponding shaped plate 170, so that the centrifugal forces generated by the rotation of the support body 145 tend to make each shaped plate 170 assume a working orientation in which it protrudes and projects radially with respect to the perimeter of the support body 145 itself.
  • the rotation axis B of the support body 145 and the oscillation axis of the shaped plate 170 are substantially coplanar on a plane that also contains the centre of gravity of the shaped plate 170 itself.
  • the shaped plates 170 can be distributed in groups, where each group comprises one or more shaped plates 170 mutually coplanar and having oscillation axes angularly equidistant from each other with respect to the rotation axis B, and where the shaped plates 170 of each group are axially spaced with respect to the shaped plates 170 of the other groups.
  • the support body 145 comprises two of said groups of shaped plates 170, each of which comprises a pair of shaped plates 170 which are coplanar and having oscillation axes diametrically opposed with respect to the rotation axis B.
  • each group may comprise a single shaped plate 170 or a number of shaped plates 170 greater than two, and/or that the support body 145 may comprise a single group of shaped plates 170 or a number of groups greater than two.
  • the shaped plates 170 are axially arranged on the support body to intercept the (facing the) outlet port 110 of the feed channel 105.
  • the shaped plates 170 are able to protrude at least partially inside the outlet port 110 of the feed channel 105, for example projecting from the inlet port 165 of the containment casing 160.
  • the shaped plates (or hammers) 170 are able to intercept (strike) the material advancement front advancing along the feed channel 105, crushing it.
  • the relative movement in the transverse direction, between the material advancement front and the shredding rotor 150 is (or comprises) a substantially translational movement along a direction perpendicular to the conveying direction A, in this case parallel to the rotation axis B of the shredding rotor 150.
  • This relative movement is preferably obtained by actively moving the outlet port 110 of the feed channel 105, and with it the material advancement front to be crushed, with respect to the shredding motor 150.
  • an end portion of the feed channel 105 which comprises the outlet port 110, can be defined by two substantially parallel and mutually opposed bulkheads 180 which, rising from the base wall 125, each define a portion of a respective one of the side walls 130 of the feed channel 105.
  • each of these bulkheads 180 has a first edge, which defines and laterally delimits the outlet port 110, and an opposite second edge, which is distal from the outlet port 110 and the shredding rotor 150.
  • each bulkhead 180 is hinged to a respective articulation axis C, which is preferably orthogonal to both the conveying direction A and the rotation axis B of the shredding rotor 150.
  • the two bulkheads 180 can be made to oscillate around the respective articulation axes C, simultaneously and keeping them parallel to each other, so as to make the outlet port 110 of the feed channel 105 perform a translation (or slight rototranslation with translational component) in a direction parallel to the rotation axis B of the shredding motor 150 and, therefore, with respect to the inlet port 165 of the containment casing 160 in which the shredding motor 150 itself is housed.
  • the shredding motor 150 can be completely analogous to that described in the previous embodiment, as well as the containment casing 160, with its inlet port 165, and the drive motor 155 can be completely analogous.
  • the feed channel 105 which can be defined by a tubular body, for example cylindrical, whose axis defines the conveying direction A and whose axial end defines the outlet port 110.
  • the relative movement in the transverse direction, between the material advancement front and the shredding rotor 150 in this case is (or comprises) a substantially rotary movement around a rotation axis orthogonal to the rotation axis B of the shredding rotor 150, for example a rotation axis coinciding with the axis of the tubular body.
  • This relative movement is preferably obtained by actively moving the outlet port 110 of the feed channel 105, for example the entire feed channel 105, and with it the material advancement front to be crushed, with respect to the shredding motor 150.
  • tubular body defining the feed channel 105 can be placed on one or more pairs of rollers 200, oriented parallel to it, at least one of which is motorized, so as to be able to rotate on itself around its own axis.
  • the crushing plant 100 comprises two mutually arranged shredding motors 150 arranged side by side with parallel rotation axes B.
  • Each of these shredding rotors 150 can carry a plurality of shredding teeth 205, shaped for example as claws, which are stably attached (without further degrees of freedom) to its periphery, eccentrically with respect to the rotation axis B.
  • the shredding teeth 205 may be distributed in one or more groups, wherein each group comprises one or more shredding teeth 205 arranged substantially on a same circumference centred on the rotation axis B (preferably angularly equidistant from each other).
  • one of the two shredding rotors 150 comprises two of said groups of shredding teeth 205, wherein the shredding teeth 205 of each group are axially spaced with respect to the shredding teeth 205 of the other group.
  • the other shredding rotor 150 instead comprises a single group of shredding teeth 205, which is preferably axially offset and interposed between the groups of shredding teeth 205 of the previous shredding rotor 150.
  • each shredding rotor 150 may comprise a different number of groups of shredding teeth 205, preferably axially staggered and alternated with the groups of shredding teeth 205 of the other shredding rotor 105.
  • the two shredding rotors 150 of this embodiment can be actuated so as to be counterrotating, i.e. so as to rotate in mutually opposite directions.
  • This drive can be obtained by means of a single engine 155, preferably an internal combustion engine (e.g. Diesel), and an appropriate transmission system.
  • the rotation axes B of the shredding rotors 150 may lie coplanar in a substantially horizontal plane.
  • the inlet port 165 of the containment casing 160 can be arranged in such a way that each shredding rotor 150 (or at least the portion thereof that carries the shredding teeth 205) is at least partially facing the inlet port 165 itself, with respect to the conveying direction A of the material to be crushed.
  • said conveying direction A may be substantially vertical, whereby the inlet port 165 may be placed above the shredding rotors 150.
  • the feed channel 105 can be defined by a generally tubular body, having an axis coinciding with the conveying direction A and shaped for example as a hopper, which can have an upper end adapted to define the inlet port 115 and a lower end adapted to define the outlet port 110.
  • the outlet port 110 may have larger sizes than the shredding rotors 150.
  • the longitudinal extension of the outlet port 110 in a direction parallel to the rotation axes B, may be greater than the axial extension of the shredding motors 150 and/or the inlet port 165 of the containment casing 160 in which they are housed.
  • the relative movement in the transverse direction, between the material advancement front to be crushed and the shredding motors 150 is (or comprises) a substantially translational movement along a direction perpendicular to the conveying direction A, in this case parallel to the rotation axes B of the shredding motors 150.
  • This relative movement is preferably obtained by actively moving the outlet port 110 of the feed channel 105, in this case the entire feed channel 105, and with it the material advancement front to be crushed, with respect to the shredding motors 150.
  • the feed channel (e.g. hopper) 105 can be slidably mounted on a support 220 fixed to the containment casing 160, along which it can be actuated by a hydraulic jack or any other suitable actuator (not illustrated).

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

Abstract

L'invention concerne un procédé de broyage de matériaux récupérés, comprenant les étapes consistant à : faire avancer les matériaux à broyer le long d'une direction de transport prédéterminée (A), utiliser au moins un moteur de déchiquetage (150) conçu pour intercepter un front d'avancement de matériau avançant le long de ladite direction de transport (A), créer un mouvement relatif entre ledit moteur de déchiquetage (150) et ledit front d'avancement de matériau transversalement à la direction de transport (A).
PCT/IB2025/053518 2024-05-09 2025-04-03 Procédé et installation de broyage de matériaux récupérés Pending WO2025233708A1 (fr)

Applications Claiming Priority (2)

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IT102024000010459 2024-05-09
IT202400010459 2024-05-09

Publications (1)

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WO2025233708A1 true WO2025233708A1 (fr) 2025-11-13

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PCT/IB2025/053518 Pending WO2025233708A1 (fr) 2024-05-09 2025-04-03 Procédé et installation de broyage de matériaux récupérés

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WO (1) WO2025233708A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070595A1 (fr) * 2007-12-14 2009-06-17 Arnaud Becker Dispositif de réduction dimensionnelle par broyage, par concassage, par déchiquetage ou par grignotage, de matériaux ou de produits manufacturés de dimensions importantes
US9216417B2 (en) * 2008-12-12 2015-12-22 Arnaud Becker Small mill having a rotor inclined relative to the axis of the feed chute

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070595A1 (fr) * 2007-12-14 2009-06-17 Arnaud Becker Dispositif de réduction dimensionnelle par broyage, par concassage, par déchiquetage ou par grignotage, de matériaux ou de produits manufacturés de dimensions importantes
US9216417B2 (en) * 2008-12-12 2015-12-22 Arnaud Becker Small mill having a rotor inclined relative to the axis of the feed chute

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