EP2500098A2 - Moulin à impact pour moudre des matières en vrac - Google Patents

Moulin à impact pour moudre des matières en vrac Download PDF

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Publication number
EP2500098A2
EP2500098A2 EP11172607A EP11172607A EP2500098A2 EP 2500098 A2 EP2500098 A2 EP 2500098A2 EP 11172607 A EP11172607 A EP 11172607A EP 11172607 A EP11172607 A EP 11172607A EP 2500098 A2 EP2500098 A2 EP 2500098A2
Authority
EP
European Patent Office
Prior art keywords
axis
mill
fact
ground
grinding chamber
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.)
Withdrawn
Application number
EP11172607A
Other languages
German (de)
English (en)
Other versions
EP2500098A3 (fr
Inventor
Gabriele Marchetti
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.)
GEI Srl
Original Assignee
GEI 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
Priority claimed from ITMO2009A000225A external-priority patent/IT1399771B1/it
Priority claimed from ITMO2009A000252A external-priority patent/IT1395949B1/it
Application filed by GEI Srl filed Critical GEI Srl
Publication of EP2500098A2 publication Critical patent/EP2500098A2/fr
Publication of EP2500098A3 publication Critical patent/EP2500098A3/fr
Withdrawn legal-status Critical Current

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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
    • B02C13/20—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors
    • 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

Definitions

  • the present invention relates to an impact mill for grinding loose material.
  • Impact mills for grinding loose materials generally comprise a main rotor moving in rotation around a relative axis and having one or more hammers suitable for crushing the incoming material.
  • the inner walls of the grinding chamber are suitably equipped with covering elements generally known to industry engineers by the name of "armours" which cooperate with the hammers to crush the material introduced into the grinding chamber.
  • a first type of hammer mill envisages the material entering the grinding chamber being crushed by squeezing between the hammers and the armours. The material is then crushed by effect of the cutting action of the hammers and of the armours, which on their part undergo speedy wear. In particular, the corners of the hammer faces are quickly chamfered, thus losing much of their effectiveness in the grinding process.
  • Impact mills envisage a good part of the material entering the grinding chamber being crushed not by crushing between the hammers and the oxys, but by effect of the impact of the material against the side surface of the hammers themselves.
  • the impact mills of known type can be classified as horizontal-axis mills or vertical-axis mills, depending on the spatial arrangement of the rotation axis of the main rotor.
  • the horizontal-axis mills generally have a secondary rotor arranged above the grinding chamber and suitable for conveying the material to be ground inside.
  • WO2002022269 Two examples of horizontal-axis impact mills are described in WO2002022269 and in WO2008105019 , wherein the secondary rotor suitable for conveying the material to be ground inside the grinding chamber is arranged above the main rotor and turns around a relevant axis arranged substantially parallel to the rotation axis of the main rotor itself, and therefore it too arranged horizontally.
  • WO2002022269 describes an impact mill wherein the secondary rotor, suitably fitted with blades to launch the material to be ground inside the grinding chamber, turns inside a substantially circular inlet chamber of the material to be ground and having a relative inlet mouth communicating with a pipe for introducing the material to be ground accessible from outside.
  • a drawback of this type of mill is tied to the fact that the secondary rotor blades tend to seize up in correspondence to the connection area between the inlet chamber and the introduction pipe of the material to be ground.
  • the material arriving from the introduction pipe builds up in fact by gravity in this connection area and interposes, during blade rotation, between the blades themselves and the side wall of the grinding chamber.
  • side wall is meant the wall surrounding the relative rotor, whether main or secondary, and which extends in a substantially parallel direction with respect to the axis of the rotor itself.
  • the hammer mill described in WO2008105019 is-similar in structure to that described in WO2002022269 .
  • the biggest difference consists in the different shape of the inlet chamber inside which the secondary rotor is housed.
  • the side wall of the inlet chamber does not have a round shape but has a series of flat surfaces, the slope of some of which can be adjusted to offset the gradual wear of the blades.
  • the material to be crushed that enters the inlet chamber tends to build up in correspondence to its inlet mouth communicating with the introduction pipe, thus interposing itself between the blades of the secondary rotor and the walls of the inlet chamber itself.
  • the cutting action exercised by the blades on the material thus interposed causes the rapid wear of the parts subject to rubbing.
  • the planarity of the side walls of the inlet chamber results in the compression of the material to be crushed between the side walls themselves and the upper part of the blades, which are therefore obstructed in their rotary movement and tend to break due to the resistance put up by the material compressed in this way.
  • the material that builds up between the blades and the side wall of the inlet chamber prevents the rotation of the secondary rotor, which is thus overloaded due to the resistance put up by the material itself.
  • the vertical mills on the other hand, generally only have the main rotor.
  • the material to be ground is introduced into the grinding chamber through an opening above the main rotor.
  • the material to be ground then enters the inside of the grinding chamber by gravity and is conveyed towards its peripheral area by effect of the centrifugal force exercised by the rotor itself.
  • a first and consistent reduction in the grain size of the material to be ground then occurs following crushing between the crushing hammers and the side wall of the grinding chamber.
  • the vertical mills of known type also have a number of drawbacks.
  • the material to be ground is crushed between the area of extremity of the hammers and the armours which cover the internal wall of the grinding chamber.
  • This crushing action besides not crushing the incoming material efficiently also causes a rapid wear of the parts between which the material is interposed, and in particular of the crushing hammers.
  • the main aim of the present invention is to provide an impact mill for grinding loose material, whether such mill be horizontal or vertical, that allows obtaining considerably more effective grinding with respect to the impact mills of known type.
  • one object of the present invention is to provide a mill that allows achieving an efficient conveyance of the material to be ground inside the grinding chamber, in such a way as to optimise its impact with the relative crushing hammers.
  • Object of the present invention is therefore to avoid, as much as possible, the material to be ground being crushed between the moving parts of the mill itself and the relative containment walls.
  • one object of the present invention is to considerably reduce, with respect to the mills of known type, both the energy needed and the raw material needed for the production of such machines.
  • Another object of the present invention is to considerably reduce, with respect to the mills of known type, the wear of the parts that come into contact with the material to be ground, and in particular of the blades of the secondary rotor in horizontal-axis mills and of the crushing hammers in vertical-axis mills.
  • Yet another object of the present invention is to provide a hammer mill that allows avoiding excessive overloading of the motor means.
  • the present invention also aims, in particular as regards horizontal-axis mills, at considerably simplifying the maintenance operations of the secondary rotor with respect to impact mills of known type, in such a way as to cut the relative costs and machine down times.
  • the last object of the present invention is to improve, especially as regards vertical-axis mills, not only the final grain size of the material to be ground but also its uniformity.
  • Another object of the present invention is to provide an impact mill for grinding loose material which allows overcoming the mentioned drawbacks of the state of the art within the ambit of a simple, rational, easy, effective to use and low cost solution.
  • the present impact mill for grinding loose material comprising:
  • the mill 1 comprises a main rotor 2 moving in rotation around a first axis 3 inside a grinding chamber 4 and having at least two hammers 5 suitable for impacting the material to be ground.
  • the grinding chamber 4 is defined by a containment body 6 which is hollow inside and which comprises at least a bottom wall 6a, arranged substantially at a right angle to the first axis 3, at least a closing wall, not shown for simplicity on the attached illustrations and facing the bottom wall 6a, and at least a side wall 6b substantially surrounding the main rotor 2 and which is interposed between the bottom wall 6a and the closing wall.
  • the side wall 6b extends in a direction substantially parallel to the first axis 3.
  • the walls delimiting the grinding chamber 4, i.e., the bottom wall 6a, the side wall 6b and the closing wall, are covered with removable protection plates 21, which can be of various shapes and which protect the containment body 6 from knocks with the material during the grinding phase.
  • the mill 1 also comprises a secondary rotor 9 moving in rotation around a second axis 10 and arranged inside an inlet chamber 11 of the material to be ground communicating with the grinding chamber 4.
  • the secondary rotor 9 has at least one or more blades 12, e.g., two blades 12 opposite one another as shown in the illustrations, and is suitable for conveying the material to be ground inside the grinding chamber 4.
  • the number of blades 12 of the secondary rotor 9 is suitable equal to the number of hammers 5 of the main rotor 2.
  • the second axis 10 is substantially vertical, as shown in the embodiments illustrated in the figures from 1 to 8.
  • the first and the second axis 3 and 10 are arranged crossways the one to the other. More in particular, the angle formed between the first and the second axis 3 and 10 is between 45° and 135°.
  • the first axis 3 is substantially at a right angle to the second axis 10 and is arranged substantially horizontal.
  • the first axis 3 is substantially parallel to the second axis 10 and, more specifically, they are both arranged vertically.
  • the inlet chamber 11 is arranged laterally, i.e. on the side of the grinding chamber 4.
  • the inlet chamber 11 is delimited by at least a bottom wall 11a, arranged substantially at a right angle to the second axis 10, and by at least a side wall 11b surrounding the secondary rotor 9 and extending substantially parallel to the second axis 10.
  • the side wall 11b is therefore-arranged at a right angle to the bottom wall 11a.
  • the inlet chamber 11 has a substantially cylindrical shape and the second axis 10 coincides with the longitudinal axis thereof.
  • the side wall 11b of the inlet chamber 11 has a plurality of reliefs 25 suitable for facilitating the sliding of the material to be ground. More in detail, the reliefs 25 defined on the side wall 11b have a substantially convex and curved outer surface. Preferably, the side wall 11b has a plurality of recesses and corresponding full elements partially fitted in these recesses so as to protrude into the inlet chamber 11 with respect to the side wall 11b, thus defining the reliefs 25.
  • the full bodies defining the reliefs 25 are preferably made of alubit and are free to rotate inside the corresponding recess to facilitate the sliding of the material to be ground and of the blades 12.
  • Such full bodies can therefore be made up of cylindrical, spherical elements or the like.
  • the inlet chamber 11 comprise at least an inlet mouth 13 and at least an outlet mouth 14 of the material to be ground, the latter being in communication with the grinding chamber 4 and being defined in correspondence to the side wall 11b of the inlet chamber itself.
  • the inlet mouth 13 is arranged so the material to be ground enters the inlet chamber 4 from above, along a direction substantially parallel to the second axis 10.
  • the inlet mouth 13 is arranged above the secondary rotor 9 and is substantially facing the bottom wall 11a.
  • the inlet mouth 13 is therefore arranged substantially perpendicular to the second axis 10 and substantially parallel to the surface brushed by the secondary rotor 9 in its movement around the second axis itself.
  • the mill I according to the invention envisages two different arrangements of the inlet mouth 13.
  • the inlet mouth 13 is arranged in such a way as to unload the material to be ground in correspondence to an area of the inlet chamber 11 not comprising the outlet mouth 14.
  • the inlet chamber 41 comprises a partition 22 which substantially separates the inlet chamber itself into two areas, one accumulation area, communicating with the inlet mouth 13, and one launching area, communicating with the outlet mouth 14.
  • the inlet mouth 13 is on the other hand arranged substantially along the second axis 10. More in particular, the mill 1 comprises a covering element of the inlet chamber 11, not visible in detail in the illustrations and arranged on the opposite side of the bottom wall 11a with respect to the secondary rotor 9. This covering element has a central opening, in which a funnel is inserted for conveying the material to be ground inside the inlet chamber 11, which substantially defines the inlet mouth 13.
  • the means of conveyance of the material to be ground in the grinding chamber 4 can be of various types, such as a sloping ramp, a hopper or the like.
  • the secondary rotor 9 advantageously comprises at least a receiving area 26 for the material to be ground which enters through the inlet mouth 13.
  • the receiving area 26 is therefore defined in correspondence to the second axis 10, i.e., in the central area of the secondary rotor 9, and is substantially aligned with the inlet mouth 13.
  • the receiving area 26 is shaped so as to the convey the material to be ground to the side wall 11b of the inlet chamber 11 dupe to the effect of the centrifugal force of the secondary rotor 9.
  • the receiving area 26 is substantially hollow and has at least a side opening 27 to allow the material to be ground to move from the central area of the secondary rotor 9 to the side wall 11b of the inlet chamber 11.
  • the receiving area 26 comprises a supporting surface 26a, substantially parallel to the bottom wall 11a and facing the inlet mouth 13, and one or more containment surfaces 26b extending upwards from the supporting surface 26a and delimiting at the side the receiving area 26.
  • the containment surfaces 26b are separated from one another by the openings 27.
  • the secondary rotor 9 comprises a plate 18 having an extension such as to substantially fully cover the bottom wall 11a and which defines the supporting surface 26a and a peripheral surface 30 substantially surrounding the supporting surface 26a; on the peripheral surface 30 the material to be ground is collected and pushed due to the effect of the centrifugal force towards the side wall 11b.
  • the receiving area 26 is substantially placed between the blades 12, which protrude from the receiving area itself towards the outside, i.e. towards the side wall 11b.
  • each blade 12 comprises two impact surfaces 28 incident the one to the other, suitable for intercepting the material to be ground accumulated on the peripheral surface 30 during the movement of the secondary rotor 9 around the second axis 10.
  • each blade 12 also has a rear surface turned towards the receiving area 26, shaped in such a way as to avoid the accumulation of the material to be ground between the blades 12 and the receiving area 26.
  • This rear surface which corresponds to the containment surface 26b mentioned above, is substantially convex.
  • the secondary rotor 9 also comprises at least a stiffening element 29 connecting the blades 12 together. More in particular, the stiffening element 29 is composed of an annular element associated with the upper area of the blades 12 turned towards the inlet mouth 13.
  • outlet mouth 14 of the inlet chamber 11 is defined on the side wall 11b thereof and communicates with the grinding chamber 4.
  • the outlet mouth 14 faces in correspondence to the bottom wall 6a, as shown in the figures from 1 to 5, or to the side wall 6b of the grinding chamber 4.
  • the side wall 11b of the inlet chamber 11 joins the bottom wall 6a and the side wall 6b respectively of the grinding chamber 6 in correspondence to the extremities thereof which delimit the outlet mouth 14.
  • the junction area of the side wall 11b with the bottom wall 6a is substantially with sharp corner, i.e, devoid of curvilinear connections.
  • the present invention then envisages two different construction solutions aimed at permitting the variation of the launching angle of the material to be ground inside the grinding chamber 4.
  • the extremity areas of the side wall 11b delimiting the outlet mouth 14 protrude inside the grinding chamber 4 and pass through a corresponding crack defined on its wall 6a,6b on which faces the outlet mouth itself.
  • the extremities of the side wall 11b delimiting the outlet mouth 14 protrude inside the grinding chamber 4 in such a way as not to interfere with the hammers 5 and, more particularly, remain inside the profile defined by the protection plates 21.
  • the extremities of the side wall 11b delimiting the outlet mouth 14 remain substantially flush with the wall 6a,6b onto which they face.
  • the first solution envisages that the side wall 11b of the inlet chamber 11 is moving in rotation around a third axis with respect to the wall 6a,6b of the grinding chamber 4 onto which it faces.
  • the third rotation axis coincides with the second rotation axis 10 of the secondary rotor 9.
  • the second solution envisages that the side wall 11b has a fixed part 23a and at least a mobile part 23b, the latter defining a corresponding free extremity of the side wall 11b itself.
  • the side wall 11b comprises two mobile parts 23b delimiting in point of fact the outlet mouth 14.
  • the mobile parts 23b are associated revolving with the fixed part 23a around a relative fourth rotation axis 24 substantially parallel to the second axis 10.
  • the rotation of the mobile parts 23b around the relative fourth rotation axes 24 can be adjusted by an operator by means of relative adjustment means, not shown in detail in the illustrations, to vary the exit angle of the material to be ground from the inlet chamber 11.
  • the mill 1 comprises two main rotors 2 arranged inside the grinding chamber 4, associated integral in rotation with one another and whose hammers 5 are shifted out of place by an angle between 45° and 135°.
  • This particular embodiment also envisages the presence of two secondary rotors 9, arranged inside relative inlet chambers I and moving in rotation around a relative second axis 10, suitable for launching the material to be ground against a relative main rotor 2.
  • the secondary rotors 9 are also shifted out of phase by an angle between 45° and 135°, and more precisely corresponding to the out-of-phase angle of the main rotors 2, so that the entry of the material to be ground launched by each of them inside the grinding chamber 4 is substantially synchronised with the passage of the hammers 5 of the relative main rotor 2.
  • the out-of-phase shift of the secondary rotors 9 corresponds to the angular out-of-phase shift of the relative blades 12.
  • the outlet mouths 14 can be facing one onto the bottom wall 6a and the other onto the covering wall opposite the bottom wall itself or both onto the side wall 6b of the grinding chamber 4 while in the case of the vertical-axis mills 1 they both face onto the side wall 6b.
  • the mill 1 comprises connection means 15 in rotation of the main rotor 2 with the secondary rotor 9, only visible in the figures 1 and 2 , suitable for maintaining the synchronism and therefore the correct phasing between them.
  • the connection means 15 can be either of the mechanical or electric type.
  • connection means 15 in rotation comprise at least a first shaft 16 associated integral in rotation with the main rotor 2, at least a second shaft, not visible in detail in the illustrations, associated integral in rotation with the secondary rotor 9 and transfer means of the rotation from the first shaft 16 to the second shaft.
  • the first and the second shaft extend along the directions defined by the rotation axes 3 and 10 of the respective rotors 2 and 9 and the transfer means are therefore suitable for connecting in rotation two axes in competition with one another.
  • the transfer means of the rotation from the first shaft 16 to the second shaft are of the mechanical type and comprise a bevel gear pair, not visible in detail in the illustrations, interposed between the first shaft 16 and the second shaft.
  • This bevel gear pair is interposed between the second shaft and an intermediate shaft 19 arranged substantially perpendicular to the second shaft itself.
  • the intermediate shaft 19 is therefore arranged substantially parallel to the first shaft 16 and is connected in rotation to the latter by means of a belt 20.
  • connection means in rotation 15 of the rotors 2 and 9 envisage the use of electric motors suitably phased the one with the other or of technical equivalents known to experts in the sector.
  • the main rotor 2 and the secondary rotor 9 revolve in the same direction the one to the other so the hammers 5 "see” the material to be ground coming during their rotation around the first axis 3.
  • the inlet trajectory of the material to be ground in the grinding chamber 4 is directed in a direction substantially contrary to the direction of rotation of the main rotor 2.
  • the present invention operates as follows.
  • the material to be ground arriving from outside e.g., from a collection hopper not shown in the illustrations, is introduced inside the inlet chamber 11 from the inlet mouth 13 placed above the secondary rotor 9.
  • the material to be ground falls by gravity inside the inlet chamber 11 and is collected in an area away from the outlet mouth 14.
  • the secondary rotor 9 Around the second axis 10 its blades 12 encounter the material to be ground thus unloaded and drag it towards the outlet mouth 14.
  • the material to be ground enters through the inlet mouth 13 located above the secondary rotor 9, centrally to this, and falls on the receiving area 26.
  • the material to be ground thus accumulates on the supporting surface 26a and is pushed towards the outside of the secondary rotor 9, i.e., towards the side wall 11b of the inlet chamber 11, due to the effect of the rotation of the secondary rotor itself and therefore of the centrifugal force deriving from it.
  • the material to be ground then passes through the openings 27 and deposits on the peripheral surface 30.
  • the material that accumulates in correspondence to the containment surfaces 27b is also pushed towards the outside, thanks also to the convex shape of the containment surfaces themselves which prevent this from accumulating.
  • the blades 12 encounter the material to be ground thus deposited on the peripheral surface 30 and drag it towards the outlet mouth 14 before launching it against the hammers 5.
  • the impact surfaces 28 of the blades 12 do not encounter the material to be ground during its fall from the inlet mouth 13, but only strike, due to the effect of the rotation speed of the secondary rotor 9, the material to be ground which is arranged resting on the peripheral surface 30. This allows considerably reducing the turbulence inside the inlet chamber 4.
  • the material to be ground, dragged by the rotation of the blades 12 towards the outlet mouth 14, is then introduced inside the grinding chamber 4 through its bottom wall 6a, as shown in the figures from 1 to 5, or its side wall 6b, as shown in the figures from 6 to 8.
  • the launching trajectory of the material to be ground inside the grinding chamber 4 can be changed according to its specific weight and grain size, so as to obtain the most efficient impact possible with the hammers 5, by rotating the side wall 11b itself or its mobile parts 23b.
  • the two secondary rotors 9 launch the material to be ground inside the grinding chamber 4 in an out-of-phase way the one to the other, so as to synchronise the entry of the material itself with the passage of the hammers 5 of the relative main rotor 2.
  • the mill according to the invention also allows, in the embodiment that envisages the inlet mouth of the material to be ground arranged along the second axis and the presence of the receiving area on the secondary rotor, further upgrading the launching phase of the material inside the grinding chamber and at the same time reducing the wear of the blades.
  • This particular configuration of the mill according to the invention permits considerably reducing the turbulence inside the inlet chamber itself and the wear of the blades.
  • the mill according to the invention therefore permits optimising the insertion phase of the material to be ground inside the grinding chamber.
  • the absence of material interposing between the blades and the side wall of the inlet chamber and the consequent reduction in wear of the blade themselves allows the secondary rotor to remain in phase with the main rotor and also prevents part of the inserted material from bypassing the secondary rotor and directly entering the grinding chamber.
  • the result therefore is more successful grinding and, consequently, smaller and more uniform piece size compared to impact mills of known type, as well as being able to use the same machine, by changing its speed, both as a tertiary mill and as a secondary mill.
  • the particular arrangement of the inlet chamber, alongside the grinding chamber ensures easier maintenance operations compared to hammer mills of known type and consequently reduces to the utmost the machine down times required for carrying out such operations.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP11172607A 2009-09-15 2010-03-12 Moulin à impact pour moudre des matières en vrac Withdrawn EP2500098A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMO2009A000225A IT1399771B1 (it) 2009-09-15 2009-09-15 Mulino ad impatto perfezionato per la macinazione di materiale incoerente
ITMO2009A000252A IT1395949B1 (it) 2009-10-15 2009-10-15 Mulino verticale ad impatto per la macinazione di materiale incoerente
EP10713507A EP2477746A1 (fr) 2009-09-15 2010-03-12 Broyeur à percussion pour le broyage d'une matière en vrac

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP10713507.1 Division 2010-03-12
EP10713507A Division EP2477746A1 (fr) 2009-09-15 2010-03-12 Broyeur à percussion pour le broyage d'une matière en vrac

Publications (2)

Publication Number Publication Date
EP2500098A2 true EP2500098A2 (fr) 2012-09-19
EP2500098A3 EP2500098A3 (fr) 2012-12-19

Family

ID=42727554

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11172607A Withdrawn EP2500098A3 (fr) 2009-09-15 2010-03-12 Moulin à impact pour moudre des matières en vrac
EP10713507A Withdrawn EP2477746A1 (fr) 2009-09-15 2010-03-12 Broyeur à percussion pour le broyage d'une matière en vrac

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10713507A Withdrawn EP2477746A1 (fr) 2009-09-15 2010-03-12 Broyeur à percussion pour le broyage d'une matière en vrac

Country Status (2)

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EP (2) EP2500098A3 (fr)
WO (1) WO2011033345A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20120230A1 (it) * 2012-09-24 2014-03-25 Gei S R L Mulino ad impatto per la macinazione di materiale incoerente
ITUB20152439A1 (it) * 2015-07-23 2017-01-23 Colombo Giovanni S R L Mulino frantumatore
RU179482U1 (ru) * 2017-12-28 2018-05-16 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Шаровая мельница с периферийной разгрузкой через сито

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002022269A1 (fr) 2000-09-14 2002-03-21 Mills Patent Management Broyeurs a marteaux ameliores secondaires et tertiaires, reversibles et non reversibles
WO2008105019A1 (fr) 2007-02-26 2008-09-04 Michele Paolini Concasseurs à marteaux à impact total destinés au broyage, à utiliser dans le bâtiment et l'agriculture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149229B (de) * 1959-12-15 1963-05-22 Georg Sistig Vorrichtung zum Brechen fester Stoffe
US3533565A (en) * 1968-09-19 1970-10-13 Reuben A Weiner Hammermill with side-by-side rotating hammer systems
DE4441325A1 (de) * 1994-11-22 1996-05-23 Krecher Johannes Josef Schlagradmühle mit Vorschläger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002022269A1 (fr) 2000-09-14 2002-03-21 Mills Patent Management Broyeurs a marteaux ameliores secondaires et tertiaires, reversibles et non reversibles
WO2008105019A1 (fr) 2007-02-26 2008-09-04 Michele Paolini Concasseurs à marteaux à impact total destinés au broyage, à utiliser dans le bâtiment et l'agriculture

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Publication number Publication date
EP2500098A3 (fr) 2012-12-19
WO2011033345A1 (fr) 2011-03-24
EP2477746A1 (fr) 2012-07-25

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