EP0702598A1 - Impact crusher - Google Patents

Impact crusher

Info

Publication number
EP0702598A1
EP0702598A1 EP94920436A EP94920436A EP0702598A1 EP 0702598 A1 EP0702598 A1 EP 0702598A1 EP 94920436 A EP94920436 A EP 94920436A EP 94920436 A EP94920436 A EP 94920436A EP 0702598 A1 EP0702598 A1 EP 0702598A1
Authority
EP
European Patent Office
Prior art keywords
impact crusher
crusher according
rotor
wall
insert
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
EP94920436A
Other languages
German (de)
French (fr)
Other versions
EP0702598B1 (en
Inventor
Der Zanden Hans Van
Hans-Joachim Dichter
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.)
VAN DER ZANDEN, ROSEMARIE
IHC Holland NV
Original Assignee
Zanden Hans V D
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 Zanden Hans V D filed Critical Zanden Hans V D
Publication of EP0702598A1 publication Critical patent/EP0702598A1/en
Application granted granted Critical
Publication of EP0702598B1 publication Critical patent/EP0702598B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
    • 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
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C2013/1857—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate rotating coaxially around the rotor shaft
    • 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
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C2013/1871—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate vertically adjustable

Definitions

  • the invention relates to an impact crusher with a plate-shaped rotor rotatably mounted about a vertical axis and a housing surrounding the latter with a wall forming an impact surface, against the inside of which, with the rotor rotating, heaped material is thrown for the purpose of comminution.
  • a baffle crusher of the above type is known from the journal AUFBEREITUNGSTECHNIK 1993, p. 274, in which the wall of the housing forming the baffle surface and lined with baffle plates is oriented parallel to the axis of rotation of the rotor.
  • the material that reaches the rotor in this impact crusher via a filling funnel is thrown against the impact surface with great force under centrifugal force and, upon impact, is broken along internal microcracks or other irregularities in the structure, in order to subsequently fall freely, where it or the like from a conveyor belt. is recorded.
  • an impact crusher with a frustoconical rotor is finally known, the upper end of which is covered by a stationary frustoconical hood, through which the material is transferred into an annular gap, which is also ke from the outer wall of the rotor and one surrounding it ⁇ truncated but stationary housing wall is formed.
  • blow bars are arranged both on the stationary outer wall formed by the housing and on the circumferential inner wall of the annular gap formed by the rotor.
  • This known crusher is also not fully satisfactory insofar as the particles of the broken or ground material have extremely uneven movement paths and there are undesirably high levels of collision between good parts.
  • the invention has for its object to provide an impact crusher of the type mentioned first, in which a largely and also uniform comminution of the material to be crushed is achieved with a comparatively low power required to drive the rotor.
  • This object is achieved according to the invention in that the inner side of the wall of the housing forming the baffle surface is designed essentially in the manner of the shell of at least one truncated cone which widens downward, that at least one insert is arranged below the rotor, the insert
  • the outside is also essentially designed in the manner of a truncated cone that widens downward and that the inside of the wall of the housing and the outside of the insert, which does not perform any relative movement with respect to it, form two baffles between them that delimit an annular gap for multiple comminution of the material.
  • the impact crusher according to the invention has the advantage that it is very powerful with a simple structure and that the energy still present in the material to be crushed after the impact on the first impact surface is used for further comminution processes and a very favorable comminution result is achieved in this way, whereby there are practically none increasing the energy requirement due to internal friction and the dust development-promoting collisions between crushed material particles with intersecting trajectories, the crushed material passes through largely determined paths from the task to the crop receiving surface of the rotor until it leaves the crusher.
  • FIG. 3 shows a highly schematic view of the essential parts of the impact crusher according to FIG. 1 with a concave good receiving surface of the rotor in a first operating position
  • FIG. 4 is a highly schematic view of the essential parts of an impact crusher according to FIG. 1 with a flat receiving surface of the rotor in a second operating position
  • FIG. 5 highly schematized the essential parts of an impact crusher according to FIG. 1 with a convex receiving surface of the rotor in a third operating position
  • 6 shows a highly schematic view of the essential parts of an impact crusher according to FIG. 1 with a tapering annular space between the impact surfaces in an operating position corresponding to FIG. 4,
  • FIG. 7 shows a plan view corresponding to the plan view according to FIG. 2 of an impact crusher with a modified housing and a modified insert
  • FIG. 8 shows a top view corresponding to the top view according to FIG. 2 of an impact crusher equipped with baffle plates according to FIGS. 1 and 2 and
  • FIG 9 shows a section through a further impact crusher, in which the impact material is comminuted into an annular space with a stationary and a rotating insert.
  • FIG. 1 is a frame for a housing of an impact crusher consisting of a wall 2 and a cover 3.
  • a plate-shaped rotor 7 is fastened on a shaft 6, which can be driven by a motor 5 via a V-belt 4, on the receiving surface 8 of which guide elements 9, often referred to as prallei, are guided for the guide elements 9 by a funnel 10 in the cover 3 pourable goods are arranged.
  • a fixed insert 11 which is designed in the manner of a stationary apron which extends downward from the edge of the rotor 7.
  • the outside 12 of the insert, together with the inside 13 of the wall, defines an annular gap 14, the the good to be crushed happens.
  • Both the wall 2 and the insert 11 essentially have the shape of truncated cones, the generatrix of which forms an angle cc of 60 'to 85' with respect to the longitudinal axis 15 of the shaft 6 (cf. FIG. 3).
  • FIGS. 3 to 5 show three different positions of the wall 2 in relation to the cover 3, the annular gap 14 being the smallest in FIG. 3 and the largest in FIG. 5. It is also indicated in FIGS. 3 to 5 that the crop receiving surfaces 8 of the rotor 7 can have different shapes. While in FIG. 4, as in FIG. 1, a flat crop receiving surface 8 is shown, FIG. 3 shows a rotor 7 with a concave crop receiving surface 19 and FIG. 5 shows a rotor 7 with a convex crop receiving surface 20.
  • annular gap 21 with a decreasing cross section can also be used, as is shown in FIG. 6.
  • FIGS. 2 to 6 show that the material 22 to be broken, after hitting the rotor 7, is first thrown radially outwards against the sloping inside 13 of the wall 2 at high speed which it encounters at an angle of about 90 'when viewed in the spin plane. Due to the inclination of the wall 2 to the longitudinal axis 15 of the shaft 6, the material 22 rebounds obliquely downward in order to then close the respective annular gap 14 on an essentially zigzag-shaped path 23 indicated in FIGS. 3 to 5 or 21 to pass.
  • the design of the wall 2 and the insert 11 and the resulting shape of the annular gap 14 or 21 reduce energy-consuming collisions between crushed material which is thrown outwards by the rotor 7 and bounces back from the inside 13 of the wall 2 and in this way suppress to a large extent losses caused by "internal friction" during the breaking process, at the same time a more intensive comminution of the material to be broken is achieved as a result of better use of energy.
  • FIGS. 1 and 2 the outer wall 2 and the wall of the insert 11 have exactly the shape of truncated cones which are produced by bending sheet metal strips corresponding to the shells of the truncated cones.
  • FIG. 7 shows a wall 2 which, like the part of the insert 11 which defines an annular gap 14 with it, consists of trapezoidal segments 24 and 25 which are connected to one another by welding in the region of their longitudinal sides. In all cases, the opposite surfaces of the wall 2 and the insert 11 are clad with wear-resistant baffle plates 26.
  • FIG. 8 shows that with a solution according to FIG. 2 there is the possibility of arranging baffle plates 26 at an angle to wall 2.
  • FIG. 9 schematically shows an impact crusher which is similar in basic structure to the impact crusher according to FIGS. 1 and 2.
  • the same reference numerals were used for FIG. 9 as in FIG. 1.
  • the crushed material in the impact crusher according to FIG. 9 is, as it were, in two stages by placing a further insert 27 below the insert 11 is.
  • Rotational movements can be introduced into the insert 27, which expediently take place in the opposite direction to the rotary movement of the rotor 7.
  • Due to the eccentric mounting of the insert 27 on a bushing 28 oversize particles of the comminuted material are subsequently subjected to a crushing operation and are thus comminuted.
  • Due to the height-adjustable design of the wall 29 of the second stage enclosing the further insert 27, the annular space thereof can also be adapted to different circumstances.

Landscapes

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

Abstract

An impact crusher has a disk-shaped rotor rotatably mounted on a vertical axis and a housing that surrounds this rotor with a wall (2) that forms an impact surface. This wall is designed as a truncated cone and, together with the outer side (12) of an insert (11) enclosed within said wall, forms an annular gap (14) through which the material to be crushed passes on a zig-zag course, without significant collisions between portions of the material to be crushed.

Description

PrallbrecherImpact crusher
Die Erfindung betrifft einen Prallbrecher mit einem uim eine vertikale Achse drehbar gelagerten tellerför¬ migen Rotor und einem diesen umgebenden Gehäuse mit einer eine Prallfläche bildenden Wand, gegen deren Innenseite bei umlaufendem Rotor auf diesen geschüt¬ tetes Gut zwecks Zerkleinerung geschleudert wird.The invention relates to an impact crusher with a plate-shaped rotor rotatably mounted about a vertical axis and a housing surrounding the latter with a wall forming an impact surface, against the inside of which, with the rotor rotating, heaped material is thrown for the purpose of comminution.
Aus der Zeitschrift AUFBEREITUNGSTECHNIK 1993, S. 274, ist ein Prallbrecher der vorstehenden Art be¬ kannt, bei dem die die Prallfläche bildende, mit so¬ genannten Prallplatten ausgekleidete Wand des Gehäu¬ ses parallel zur Drehachse des Rotors ausgerichtet ist. Das bei diesem Prallbrecher über einen Einfüll- trichter auf den Rotor gelangende Gut wird unter Fliehkrafteinwirkung mit großer Wucht gegen die Prallfläche geschleudert und beim Aufprall längs in¬ neren Mikrorissen oder anderen Unregelmäßigkeiten in der Struktur folgenden Bruchlinien zerbrochen, um anschließend frei nach unten zu fallen, wo es von einem Förderband od.dgl. aufgenommen wird.A baffle crusher of the above type is known from the journal AUFBEREITUNGSTECHNIK 1993, p. 274, in which the wall of the housing forming the baffle surface and lined with baffle plates is oriented parallel to the axis of rotation of the rotor. The material that reaches the rotor in this impact crusher via a filling funnel is thrown against the impact surface with great force under centrifugal force and, upon impact, is broken along internal microcracks or other irregularities in the structure, in order to subsequently fall freely, where it or the like from a conveyor belt. is recorded.
Bei einem anderen aus Zeitschrift AUFBEREITUNGSTECH¬ NIK 1988, S. 27, bekannten Prallbrecher mit einem ähnlichen Aufbau wird die Prallfläche nicht von an der Innenseite einer metallischen Gehäusewand an¬ geordneten Prallplatten, sondern von der dem Rotor zugewandten Seite eines den Rotor umschließenden Brechgutgürtels gebildet. In diesem Fall stellt sich automatisch eine Prallflächenform ein, die dazu führt, daß das zu brechende Gut schleifenförmige Be¬ wegungsbahnen zurücklegt, in deren Bereiche es zu Zusammenstößen zwischen noch unzertrümmerten und be¬ reits durch den Aufprall auf die Prallfläche zertrüm¬ merten Gutanteilen kommt. Die Zusammenstöße und ein laufender Abtrag der die Prallfläche bildenden, aus vergleichsweise kleinen Gutteilen bestehenden Gutlage führen dazu, daß das aus dem Brecher austretende Gut einen vergleichsweise großen Anteil relativ feiner Partikel enthält. Als nachteilig erweist sich bei dem Brecher dieser zweiten Ausführungsform der Umstand, daß sein Betrieb gewissermaßen aufgrund innerer Rei¬ bung zwischen miteinander kollidierenden Brechgutan¬ teilen größere Leistungen erfordert als der Betrieb des zuvor beschriebenen Brechers und daß die Staub¬ entwicklung im Brechraum bei ihm besonders stark ist.In another impact crusher with a similar construction, known from the journal AUFBEREITUNGSTECH¬ NIK 1988, p. 27, the impact surface is not formed by impact plates arranged on the inside of a metallic housing wall, but by the side of the crushed material belt surrounding the rotor facing the rotor. In this case, an impact surface shape is automatically established, which leads to the material to be broken covering loop-shaped movement paths, in the areas of which it closes There is a collision between parts of the goods that have not yet been smashed and that have already been smashed by the impact on the impact surface. The collisions and a continuous erosion of the good layer, which consists of comparatively small good parts and which form the impact surface, result in the good emerging from the crusher containing a comparatively large proportion of relatively fine particles. A disadvantage of the crusher of this second embodiment is the fact that its operation, as it were due to internal friction between parts of the crushed material that collide with one another, requires greater performance than the operation of the crusher described above and that the dust development in the crusher chamber is particularly strong for him is.
Aus der DD-PS 16 983 ist schließlich ein Prallbrecher mit einem kegelstumpfförmigen Rotor bekannt, dessen oberes Ende durch eine stationäre kegelstumpfförmige Haube abgedeckt ist, durch die das Gut in einen Ringspalt überführt wird, der von der Außenwand des Rotors und einer diesen umschließenden ebenfalls ke¬ gelstumpfförmigen, jedoch stationären Gehäusewand gebildet wird. Bei diesem Prallbrecher sind sowohl an der vom Gehäuse gebildeten stationären Außenwand als auch an der vom Rotor gebildeten umlaufenden Innen¬ wand des Ringspaltes Schlagleisten angeordnet. Auch dieser bekannte Brecher vermag insofern nicht voll zu befriedigen, als bei ihm die Partikel des gebrochenen bzw. gemahlenen Gutes extrem ungleichmäßige Bewe¬ gungsbahnen durchlaufen und es in einem unerwünscht hohen Maße zu Zusammenstößen zwischen Gutanteilen kommt. Die unkontrollierten Kollisionen von Brechgut- anteilen erhöhen wiederum nicht nur den Leistungs- bedarf des Prallbrechers, sondern sie führen auch zu einer unerwünscht großen Schwankungsbreite der Parti¬ kelgröße des zerkleinerten Gutes, wobei dessen Quali¬ tät beeinträchtigende Feinstpartikel zudem erneut ei¬ ne störende Staubentwicklung fördern.From DD-PS 16 983, an impact crusher with a frustoconical rotor is finally known, the upper end of which is covered by a stationary frustoconical hood, through which the material is transferred into an annular gap, which is also ke from the outer wall of the rotor and one surrounding it ¬ truncated but stationary housing wall is formed. In this impact crusher, blow bars are arranged both on the stationary outer wall formed by the housing and on the circumferential inner wall of the annular gap formed by the rotor. This known crusher is also not fully satisfactory insofar as the particles of the broken or ground material have extremely uneven movement paths and there are undesirably high levels of collision between good parts. The uncontrolled collisions of crushed material in turn not only increase the performance requires the impact crusher, but they also lead to an undesirably large fluctuation range in the particle size of the comminuted material, the fine particles impairing its quality furthermore again promoting a disruptive dust development.
Der Erfindung liegt die Aufgabe zugrunde, einen Prallbrecher der zuerst genannten Gattung zu schaf¬ fen, bei dem mit vergleichsweise geringer zum Antrieb des Rotors erforderlicher Leistung eine weitgehende und zudem gleichmäßige Zerkleinerung des Brechgutes erzielt wird. Diese Aufgabe wird erfindungsgemäß da¬ durch gelöst, daß die die Prallfläche bildende Innen¬ seite der Wand des Gehäuses im wesentlichen nach Art des Mantels mindestens eines sich nach unten erwei¬ ternden Kegelstumpfes ausgebildet ist, daß unterhalb des Rotors mindestens ein Einsatz angeordnet ist, dessen Außenseite ebenfalls im wesentlichen nach Art eines sich nach unten erweiternden Kegelstumpfes aus¬ gebildet ist und daß die Innenseite der Wand des Ge¬ häuses und die gegenüber dieser keine Relativbewegung ausführende Außenseite des Einsatzes zwei zwischen sich einen Ringspalt begrenzende Prallflächen für eine Mehrfachzerkleinerung des Gutes bilden.The invention has for its object to provide an impact crusher of the type mentioned first, in which a largely and also uniform comminution of the material to be crushed is achieved with a comparatively low power required to drive the rotor. This object is achieved according to the invention in that the inner side of the wall of the housing forming the baffle surface is designed essentially in the manner of the shell of at least one truncated cone which widens downward, that at least one insert is arranged below the rotor, the insert The outside is also essentially designed in the manner of a truncated cone that widens downward and that the inside of the wall of the housing and the outside of the insert, which does not perform any relative movement with respect to it, form two baffles between them that delimit an annular gap for multiple comminution of the material.
Der erfindungsgemäße Prallbrecher bietet den Vorteil, daß er bei einfachem Aufbau sehr leistungsfähig ist und daß bei ihm die im Brechgut nach dem Aufprall auf die erste Prallfläche noch vorhandene Energie für weitere Zerkleinerungsvorgänge genutzt und auf diese Weise ein sehr günstiges Zerkleinerungsergebnis er¬ zielt wird, wobei es praktisch zu keinen den Energie¬ bedarf durch innere Reibung erhöhenden und die Staub- entwicklung fördernden Zusammenstößen zwischen Brech- gutpartikeln mit sich kreuzenden Bewegungsbahnen kommt, das Brechgut durchläuft von der Aufgabe auf die Gutaufnahmefläche des Rotors bis zum Verlassen des Brechers vielmehr weitgehend determinierte Bahnen.The impact crusher according to the invention has the advantage that it is very powerful with a simple structure and that the energy still present in the material to be crushed after the impact on the first impact surface is used for further comminution processes and a very favorable comminution result is achieved in this way, whereby there are practically none increasing the energy requirement due to internal friction and the dust development-promoting collisions between crushed material particles with intersecting trajectories, the crushed material passes through largely determined paths from the task to the crop receiving surface of the rotor until it leaves the crusher.
Weitere Einzelheiten und Merkmale der Erfindung erge¬ ben sich aus den Unte ansprüchen und der nachstehen¬ den Beschreibung mehrerer in der beigefügten Zeich¬ nung dargestellter Ausführungsformen. Es zeigen:Further details and features of the invention emerge from the subclaims and the following description of several embodiments shown in the accompanying drawing. Show it:
Fig. 1 teilweise im Schnitt die perspektivische An¬ sicht eines besonders einfach aufgebauten Prallbrechers,1 partially in section the perspective view of a particularly simply constructed impact crusher,
Fig. 2 die Draufsicht auf den Rotor des Prallbrechers und die einen Ringraum begrenzenden Prallflächen,2 shows the top view of the rotor of the impact crusher and the impact surfaces delimiting an annular space,
Fig. 3 stark schematisiert die wesentlichen Teile des Prallbrechers gemäß Figur 1 mit einer konkaven Gu¬ taufnahmefläche des Rotors in einer ersten BetriebsStellung,3 shows a highly schematic view of the essential parts of the impact crusher according to FIG. 1 with a concave good receiving surface of the rotor in a first operating position,
Fig. 4 stark schematisiert die wesentlichen Teile eines Prallbrechers gemäß Figur 1 mit einer planen Gutaufnahmefläche des Rotors in einer zweiten BetriebsStellung,4 is a highly schematic view of the essential parts of an impact crusher according to FIG. 1 with a flat receiving surface of the rotor in a second operating position,
Fig. 5 stark schematisiert die wesentlichen Teile eines Prallbrechers gemäß Figur 1 mit einer konvexen Gutaufnahmefläche des Rotors in einer dritten BetriebsStellung, Fig. 6 stark schematisiert die wesentlichen Teile eines Prallbrechers gemäß Fig. 1 mit einem sich ver¬ jüngenden Ringraum zwischen den Prallflächen in einer der Figur 4 entsprechenden Betriebsstellung,5 highly schematized the essential parts of an impact crusher according to FIG. 1 with a convex receiving surface of the rotor in a third operating position, 6 shows a highly schematic view of the essential parts of an impact crusher according to FIG. 1 with a tapering annular space between the impact surfaces in an operating position corresponding to FIG. 4,
Fig. 7 eine der Draufsicht gemäß Figur 2 entsprechen¬ de Draufsicht auf einen Prallbrecher mit einem modi¬ fizierten Gehäuse und einem modifizierten Einsatz,7 shows a plan view corresponding to the plan view according to FIG. 2 of an impact crusher with a modified housing and a modified insert,
Fig. 8 eine der Draufsicht gemäß Figur 2 entsprechen¬ de Draufsicht eines mit Prallplatten ausgestatteten Prallbrechers gemäß den Figuren 1 und 2 und8 shows a top view corresponding to the top view according to FIG. 2 of an impact crusher equipped with baffle plates according to FIGS. 1 and 2 and
Fig. 9 einen Schnitt durch einen weiteren Prallbre¬ cher, bei dem das Prallgut in einen Ringraum mit ei¬ nem stehenden und einem rotierenden Einsatz zerklei¬ nert wird.9 shows a section through a further impact crusher, in which the impact material is comminuted into an annular space with a stationary and a rotating insert.
In Figur 1 ist 1 ein Gestell für eine aus einer Wand 2 und einem Deckel 3 bestehendes Gehäuse eines Prall- brechers. Im Innern des Gehäusese 2,3 ist auf einer über einen Keilriemen 4 durch einen Motor 5 antreib¬ baren Welle 6 ein tellerförmiger Rotor 7 befestigt, auf dessen Gutaufnahmefläche 8 vielfach als Prallei¬ sten bezeichnete Führungselemente 9 für das durch einen Einfülltrichter 10 im Deckel 3 schüttbare Gut angeordnet sind. Unterhalb des während des Betriebes des Prallbrechers mit hoher Drehzahl umlaufenden Ro¬ tors 7 befindet sich ein feststehender Einsatz 11, der nach Art einer sich vom Rand des Rotors 7 nach unten erstreckenden ruhenden Schürze ausgebildet ist. Die Außenseite 12 des Einsatzes begrenzt zusammen mit der Innenseite 13 der Wand einen Ringspalt 14, den das zu zerkleinernde Gut passiert. Sowohl die Wand 2 als auch der Einsatz 11 haben im wesentlichen die Form von Kegelstumpfen, deren Erzeugende gegenüber der Längsachse 15 der Welle 6 einen Winkel cc von 60' bis 85' einschließt (vgl. Figur 3) .In FIG. 1, 1 is a frame for a housing of an impact crusher consisting of a wall 2 and a cover 3. In the interior of the housing 2, 3, a plate-shaped rotor 7 is fastened on a shaft 6, which can be driven by a motor 5 via a V-belt 4, on the receiving surface 8 of which guide elements 9, often referred to as prallei, are guided for the guide elements 9 by a funnel 10 in the cover 3 pourable goods are arranged. Below the rotor 7 rotating at high speed during operation of the impact crusher is a fixed insert 11 which is designed in the manner of a stationary apron which extends downward from the edge of the rotor 7. The outside 12 of the insert, together with the inside 13 of the wall, defines an annular gap 14, the the good to be crushed happens. Both the wall 2 and the insert 11 essentially have the shape of truncated cones, the generatrix of which forms an angle cc of 60 'to 85' with respect to the longitudinal axis 15 of the shaft 6 (cf. FIG. 3).
Um den Abstand zwischen der Innenseite 13 der Wand 2 und der Außenseite 12 des Einsatzes variieren zu kön¬ nen, ist die Wand 2 über Ausleger 16 und Schraubhül¬ sen 17 an Schraubspindeln 18 gelagert. Durch die Ein¬ leitung von Drehbewegungen in die Schraubspindeln 18 läßt sich die Wand 2 relativ zum Deckel 3 bewegen. Die Figuren 3 bis 5 zeigen drei unterschiedliche Positionen der Wand 2 gegenüber dem Deckel 3, wobei der Ringspalt 14 in der Figur 3 am kleinsten und in der Figur 5 am größten ist. Außerdem ist in den Figu¬ ren 3 bis 5 angedeutet, daß die Gutaufnahmeflächen 8 des Rotors 7 unterschiedliche Formen haben können. Während in Figur 4 wie in Figur 1 eine plane Gutauf¬ nahmefläche 8 dargestellt ist, zeigt die Figur 3 ei¬ nen Rotor 7 mit einer konkaven Gutaufnahmefläche 19 und die Figur 5 einen Rotor 7 mit einer konvexen Gut- aufnahmeflache 20.In order to be able to vary the distance between the inner side 13 of the wall 2 and the outer side 12 of the insert, the wall 2 is mounted on screw spindles 18 by means of brackets 16 and screw sleeves 17. By introducing rotary movements into the screw spindles 18, the wall 2 can be moved relative to the cover 3. FIGS. 3 to 5 show three different positions of the wall 2 in relation to the cover 3, the annular gap 14 being the smallest in FIG. 3 and the largest in FIG. 5. It is also indicated in FIGS. 3 to 5 that the crop receiving surfaces 8 of the rotor 7 can have different shapes. While in FIG. 4, as in FIG. 1, a flat crop receiving surface 8 is shown, FIG. 3 shows a rotor 7 with a concave crop receiving surface 19 and FIG. 5 shows a rotor 7 with a convex crop receiving surface 20.
Statt mit einem Ringspalt 14 jeweils konstanten Quer¬ schnitts zu arbeiten, kann auch ein Ringspalt 21 mit abnehmendem Querschnitt verwendet werden, wie er in Figur 6 wiedergegeben ist.Instead of working with an annular gap 14 of constant cross section, an annular gap 21 with a decreasing cross section can also be used, as is shown in FIG. 6.
Die Figuren 2 bis 6 lassen erkennen, daß das zu bre¬ chende Gut 22 nach dem Auftreffen auf den Rotor 7 mit hoher Geschwindigkeit zunächst radial nach außen ge¬ gen die schräge Innenseite 13 der Wand 2 geschleudert wird, auf die es in der Schleuderebene betrachtet unter einem Winkel von etwa 90' auftrifft. Durch die Neigung der Wand 2 zur Längsachse 15 der Welle 6 prallt das Gut 22 schräg nach unten ab, um an¬ schließend auf einer in den Figuren 3 bis 5 angedeu¬ teten, im wesentlichen zick-zack-förmigen Bahn 23 den jeweiligen Ringspalt 14 bzw. 21 zu passieren. Die Ausbildung der Wand 2 und des Einsatzes 11 und die daraus resultierende Form des Ringspaltes 14 bzw. 21 reduzieren mit anderen Worten energieverzehrende Zu¬ sammenstöße zwischen vom Rotor 7 nach außen geschleu¬ derte und von der Innenseite 13 der Wand 2 zurück¬ prallendes Brechgut und unterdrücken auf diese Weise in starkem Maße durch "innere Reibung" beim Brechvor¬ gang entstehende Verluste, wobei gleichzeitig infolge besserer Energieausnutzung eine intensivere Zerklei¬ nerung des zu brechenden Gutes erreicht wird.FIGS. 2 to 6 show that the material 22 to be broken, after hitting the rotor 7, is first thrown radially outwards against the sloping inside 13 of the wall 2 at high speed which it encounters at an angle of about 90 'when viewed in the spin plane. Due to the inclination of the wall 2 to the longitudinal axis 15 of the shaft 6, the material 22 rebounds obliquely downward in order to then close the respective annular gap 14 on an essentially zigzag-shaped path 23 indicated in FIGS. 3 to 5 or 21 to pass. In other words, the design of the wall 2 and the insert 11 and the resulting shape of the annular gap 14 or 21 reduce energy-consuming collisions between crushed material which is thrown outwards by the rotor 7 and bounces back from the inside 13 of the wall 2 and in this way suppress to a large extent losses caused by "internal friction" during the breaking process, at the same time a more intensive comminution of the material to be broken is achieved as a result of better use of energy.
Bei der in den Figuren 1 und 2 dargestellten bevor¬ zugten Ausführungsform haben die Außenwand 2 und die Wand des Einsatzes 11 exakt die Form von Kegelstümp¬ fen, die durch Biegen von den Mänteln der Kegelstümp¬ fe entsprechenden Blechstreifen hergestellt sind. Figur 7 dagegen zeigt eine Wand 2, die ebenso wie der mit ihr einen Ringspalt 14 begrenzende Teil des Ein¬ satzes 11 aus planen, trapezförmigen Segmenten 24 bzw. 25 besteht, die im Bereich ihrer Längsseiten durch Schweißen miteinander verbunden sind. In allen Fällen sind die sich gegenüberliegenden Flächen der Wand 2 und des Einsatzes 11 mit verschleißfesten Prallplatten 26 bekleidet. Figur 8 läßt erkennen, daß bei einer Lösung gemäß Figur 2 die Möglichkeit besteht, Prallplatten 26 schräg zur Wand 2 anzuordnen.In the preferred embodiment shown in FIGS. 1 and 2, the outer wall 2 and the wall of the insert 11 have exactly the shape of truncated cones which are produced by bending sheet metal strips corresponding to the shells of the truncated cones. FIG. 7, on the other hand, shows a wall 2 which, like the part of the insert 11 which defines an annular gap 14 with it, consists of trapezoidal segments 24 and 25 which are connected to one another by welding in the region of their longitudinal sides. In all cases, the opposite surfaces of the wall 2 and the insert 11 are clad with wear-resistant baffle plates 26. FIG. 8 shows that with a solution according to FIG. 2 there is the possibility of arranging baffle plates 26 at an angle to wall 2.
In Figur 9 schließlich ist schematisch ein Prallbre¬ cher dargestellt, der im Grundaufbau dem Prallbrecher gemäß den Figuren 1 und 2 ähnelt. Für die Figur 9 wurden daher weitgehend die gleichen Bezugszeichen verwendet wie in Figur 1. Anders als bei der zuerst beschriebenen Ausführungsform erfolgt die Zerkleine¬ rung des Brechgutes beim Prallbrecher gemäß Figur 9 gewissermaßen in zwei Stufen, indem unterhalb des Einsatzes 11 ein weiterer Einsatz 27 angeordnet ist. In den Einsatz 27 sind D ehbewegungen einleitbar, die zweckmäßigerweise gegenläufig zur Drehbewegung des Rotors 7 erfolgen. Durch die exzentrische Lagerung des Einsatzes 27 auf einer Buchse 28 wird anfallendes Überkorn des zerkleinerten Gutes nachträglich einem Quetschvo gang unterworfen und auf diese Weise nach- zerkleinert. Durch die höhenverstellbare Ausbildung der den weiteren Einsatz 27 umschließenden Wand 29 der zweiten Stufe läßt sich deren Ringraum ebenfalls an unterschiedliche Gegebenheiten anpassen. Finally, FIG. 9 schematically shows an impact crusher which is similar in basic structure to the impact crusher according to FIGS. 1 and 2. For this reason, the same reference numerals were used for FIG. 9 as in FIG. 1. In contrast to the embodiment described first, the crushed material in the impact crusher according to FIG. 9 is, as it were, in two stages by placing a further insert 27 below the insert 11 is. Rotational movements can be introduced into the insert 27, which expediently take place in the opposite direction to the rotary movement of the rotor 7. Due to the eccentric mounting of the insert 27 on a bushing 28, oversize particles of the comminuted material are subsequently subjected to a crushing operation and are thus comminuted. Due to the height-adjustable design of the wall 29 of the second stage enclosing the further insert 27, the annular space thereof can also be adapted to different circumstances.

Claims

Patentansprüche: Claims:
1. Prallbrecher mit einem um eine vertikale Achse drehbar gelagerten tellerförmigen Rotor und einem diesen umgebenden Gehäuse mit einer eine Prallfläche bildenden Wand, gegen deren Innenseite bei umlaufen¬ dem Rotor auf diesen geschüttetes Gut zwecks Zerklei¬ nerung geschleudert wird, dadurch gekennzeichnet, daß die die Prallfläche bildende Innenseite (13) der Wand (2) des Gehäuses (2,3) im wesentlichen nach Art des1. Impact crusher with a plate-shaped rotor rotatably mounted about a vertical axis and a housing surrounding it with a wall forming a baffle surface, against the inside of which spilled material is thrown onto this material for the purpose of comminution, characterized in that the Baffle forming inner side (13) of the wall (2) of the housing (2,3) essentially in the manner of
Mantels mindestens eines sich nach unten erweiternden Kegelstumpfes ausgebildet ist, daß unterhalb des Ro¬ tors (7) mindestens ein Einsatz (11;27) angeordnet ist, dessen Außenseite (12) ebenfalls im wesentlichen nach Art eines sich nach unten erweiternden Kegel- stumpfes ausgebildet ist und daß die Innenseite (13) der Wand (2) des Gehäuses (2,3) und die gegenüber dieser keine Relativbewegung ausführende Außenseite (12) des Einsatzes (11;27) zwei zwischen sich einen Ringspalt (14) begrenzende Prallflächen für eine Mehrfachzerkleinerung des Gutes bilden.Sheath of at least one truncated cone that widens downward is designed such that at least one insert (11; 27) is arranged below the rotor (7), the outside (12) of which is also essentially designed in the manner of a truncated cone that widens downward and that the inside (13) of the wall (2) of the housing (2, 3) and the outside (12) of the insert (11; 27), which does not perform any relative movement, are two baffles for one that delimit an annular gap (14) Form multiple comminution of the material.
2. Prallbrecher nach Anspruch 1, dadurch gekennzeich¬ net, daß die eine erste Prallfläche bildende Wand (2) des Gehäuses (2,3) zwecks Veränderung der Größe des Ringspaltes (14) gegenüber dem Einsatz (11) in der Höhe verstellbar ist.2. Impact crusher according to claim 1, characterized gekennzeich¬ net that the first baffle wall (2) of the housing (2,3) for the purpose of changing the size of the annular gap (14) relative to the insert (11) is adjustable in height.
3. Prallbrecher nach Anspruch 1 oder 2, dadurch ge¬ kennzeichnet, daß der Abstand zwischen den von der Innenseite (13) der Wand (2) des Gehäuses (2,3) und der Außenseite (12) des Einsatzes (11) gebildeten Prallflächen innerhalb des Ringspaltes (14) konstant ist.3. impact crusher according to claim 1 or 2, characterized ge indicates that the distance between the inside (13) of the wall (2) of the housing (2,3) and the outside (12) of the insert (11) formed Baffles within the annular gap (14) is constant.
4. Prallbrecher nach Anspruch 1 oder 2, dadurch ge¬ kennzeichnet, daß der Abstand zwischen den von der Innenseite (13) der Wand (2) des Gehäuses (2,3) und der Außenseite (12) des Einsatzes (11) gebildeten Prallflächen zum unteren Ende des Ringspaltes (21) hin abnimmt.4. impact crusher according to claim 1 or 2, characterized ge indicates that the distance between the from the inside (13) of the wall (2) of the housing (2,3) and the outside (12) of the insert (11) formed baffles decreases towards the lower end of the annular gap (21).
5. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 4, dadurch gekennzeichnet, daß der Einsatz (11) nach Art einer sich vom Außenrand des Rotors (7) nach unten erstreckenden ruhenden, d.h. nicht umlau¬ fenden Schürze ausgebildet ist.5. Impact crusher according to one or more of claims 1 to 4, characterized in that the insert (11) rests in the manner of a dormant, i.e. extending from the outer edge of the rotor (7). apron is not circumferential.
6. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 5, dadurch gekennzeichnet, daß die Schräge der die eine Prallfläche bildenden Wand des Gehäuses6. impact crusher according to one or more of Ansprü¬ che 1 to 5, characterized in that the slope of the wall forming a baffle of the housing
(2,3) 60" bis 85' beträgt.(2,3) is 60 "to 85 '.
7. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 6, dadurch gekennzeichnet, daß die einem Einfülltrichter (10) zugewandte Gutaufnahmefläche (8) des Rotors (7) plan ist.7. impact crusher according to one or more of Ansprü¬ che 1 to 6, characterized in that the feed hopper (10) facing the receiving surface (8) of the rotor (7) is flat.
8. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 7, dadurch gekennzeichnet, daß die einem Einfülltrichter (10) zugewandte Gutaufnahmefläche (20) des Rotors (7) konvex ist. 8. impact crusher according to one or more of Ansprü¬ che 1 to 7, characterized in that the feed hopper (10) facing the receiving surface (20) of the rotor (7) is convex.
9. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 7, dadurch gekennzeichnet, daß die einem Einfülltrichter (10) zugewandte Gutaufnahmefläche9. impact crusher according to one or more of Ansprü¬ che 1 to 7, characterized in that the one hopper (10) facing the receiving surface
(19) des Rotors (7) konkav ist.(19) of the rotor (7) is concave.
10. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 9, dadurch gekennzeichnet, daß der Rotor (7) mit die Abflugbahn des Gutes vom Rotor (7) beein¬ flussenden Gutführungselementen (9) versehen ist.10. Impact crusher according to one or more of claims 1 to 9, characterized in that the rotor (7) is provided with the guiding elements (9) influencing the departure path of the material from the rotor (7).
11. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 10, dadurch gekennzeichnet, daß die Außen¬ wand (2) des Gehäuses (2,3) aus trapezförmigen, pla¬ nen Segmenten (24) besteht.11. Impact crusher according to one or more of claims 1 to 10, characterized in that the outer wall (2) of the housing (2, 3) consists of trapezoidal, flat segments (24).
12. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 11, dadurch gekennzeichnet, daß die Prall- flächen mit austauschbaren Prallplatten (26) ausge¬ stattet sind.12. Impact crusher according to one or more of claims 1 to 11, characterized in that the impact surfaces are equipped with exchangeable impact plates (26).
13. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 12, dadurch gekennzeichnet, daß sich an den unterhalb des Rotors (7) angeordneten Einsatz (11) ein weiterer von einer Wand (29) umschlossener Ein¬ satz (27) anschließt.13. Impact crusher according to one or more of claims 1 to 12, characterized in that another insert (27) enclosed by a wall (29) is connected to the insert (11) arranged below the rotor (7).
14. Prallbrecher nach Anspruch 13, dadurch gekenn¬ zeichnet, daß die Schräge der Außenseiten der beiden Einsätze (11,27) unterschiedlich groß ist. 14. Impact crusher according to claim 13, characterized gekenn¬ characterized in that the slope of the outer sides of the two inserts (11, 27) is of different sizes.
15. Prallbrecher nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß der weitere Einsatz (27) in eine Drehbewegung versetzbar ist.15. Impact crusher according to claim 13 or 14, characterized in that the further insert (27) is rotatable.
16. Prallbrecher nach Anspruch 15, dadurch gekenn¬ zeichnet, daß die Drehbewegungen des Rotors (7) und des weiteren Einsatzes (27) gegenläufig sind.16. Impact crusher according to claim 15, characterized gekenn¬ characterized in that the rotary movements of the rotor (7) and the further insert (27) are in opposite directions.
17. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 16, dadurch gekennzeichnet, daß der weitere Einsatz (27) auf einer gegenüber der Längsachse der Rotorwelle (6) exzentrisch angeordneten Buchse (28) gelagert ist.17. Impact crusher according to one or more of claims 1 to 16, characterized in that the further insert (27) is mounted on a bushing (28) arranged eccentrically with respect to the longitudinal axis of the rotor shaft (6).
18. Prallbrecher nach einem oder mehreren der Ansprü¬ che 1 bis 17, dadurch gekennzeichnet, daß die den weiteren Einsatz (27) umschließende Wand (29) in der Höhe verstellbar ist. 18. Impact crusher according to one or more of claims 1 to 17, characterized in that the wall (29) surrounding the further insert (27) is adjustable in height.
EP94920436A 1993-06-10 1994-06-08 Impact crusher Expired - Lifetime EP0702598B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4319702A DE4319702C2 (en) 1993-06-10 1993-06-10 Impact crusher
DE4319702 1993-06-10
PCT/EP1994/001867 WO1994029027A1 (en) 1993-06-10 1994-06-08 Impact crusher

Publications (2)

Publication Number Publication Date
EP0702598A1 true EP0702598A1 (en) 1996-03-27
EP0702598B1 EP0702598B1 (en) 1997-02-19

Family

ID=6490329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94920436A Expired - Lifetime EP0702598B1 (en) 1993-06-10 1994-06-08 Impact crusher

Country Status (5)

Country Link
EP (1) EP0702598B1 (en)
AT (1) ATE149000T1 (en)
AU (1) AU7123094A (en)
DE (2) DE4319702C2 (en)
WO (1) WO1994029027A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835690A1 (en) 1996-10-11 1998-04-15 Van der Zanden, Johannes Petrus Andreas Josephus Method and device for synchronously impact milling of material
AU2007252278B2 (en) * 2006-05-18 2012-08-16 The University Of Queensland Apparatus and method for determining the breakage properties and probability of breakage of a particulate material

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403998B (en) 1996-11-20 1998-07-27 Mfl Mahltechnik Liezen Ges M B IMPACT MILL
DE19714075A1 (en) * 1997-04-04 1998-10-08 Hosokawa Mikropul Ges Fuer Mah Grinding plant
NL1016393C2 (en) 2000-07-02 2002-01-03 Johannes Petrus Andreas Zanden Mill with streamlined space.
DE102011050789A1 (en) * 2011-06-01 2012-12-06 RoTAC GmbH Device for the mechanical separation of material conglomerates from materials of different density and / or consistency
FR2979194B1 (en) * 2011-08-30 2015-01-02 Pellenc Sa METHOD AND DEVICE FOR DYNAMIC GROWING OF FRUIT
ES2881864T3 (en) * 2015-02-18 2021-11-30 Pms Handelskontor Gmbh Crushing device
DE102016002650B4 (en) * 2016-03-04 2020-06-25 Olusegun Arowolo Device for breaking cocoa pods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB376760A (en) * 1931-03-05 1932-07-05 Ernest Feuerheerd Improvements in or relating to apparatus for pulverising or grinding coal and other materials
DE942244C (en) * 1951-02-23 1956-06-14 Kloeckner Humboldt Deutz Ag Impact mill
DE1853893U (en) * 1959-10-02 1962-06-20 Ver Kesselwerke Ag Centrifugal mill, preferably for raw brown coal.
DE1211903B (en) * 1963-02-07 1966-03-03 Maerkische Steinkohlengewerksc Centrifugal mill for comminuting loose debris
US4326676A (en) * 1980-05-12 1982-04-27 Canica Crushers, Ltd. Reciprocating infeed tube for centrifugal impact rock crusher
DE3905365A1 (en) * 1989-02-22 1989-11-23 Brauer Heinz Prof Dr H C Dr In Machine for determinate impact crushing
DE9005091U1 (en) * 1990-05-04 1990-07-12 F.B. Lehmann Maschinenfabrik Gmbh, 7080 Aalen Throwing crushers, especially for cocoa beans

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9429027A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835690A1 (en) 1996-10-11 1998-04-15 Van der Zanden, Johannes Petrus Andreas Josephus Method and device for synchronously impact milling of material
AU2007252278B2 (en) * 2006-05-18 2012-08-16 The University Of Queensland Apparatus and method for determining the breakage properties and probability of breakage of a particulate material

Also Published As

Publication number Publication date
EP0702598B1 (en) 1997-02-19
WO1994029027A1 (en) 1994-12-22
DE59401835D1 (en) 1997-03-27
DE4319702A1 (en) 1994-12-15
ATE149000T1 (en) 1997-03-15
AU7123094A (en) 1995-01-03
DE4319702C2 (en) 1995-06-14

Similar Documents

Publication Publication Date Title
EP0376011B1 (en) Housing for a scrap-shredding apparatus
DE102005046207B4 (en) Device for crushing debris
EP0628350B1 (en) Device and method for comminuting and mixing material
DE2550879B2 (en) Apparatus for the known recycling of waste from thermoset plastic
DE69904013T2 (en) METHOD AND DEVICE FOR CRUSHING WASTE, EVEN FOR WASTE NOT PROVIDED FOR IT
WO2018210657A1 (en) Screen ball mill for processing coarse metal-containing material
DE2806315C2 (en)
DE4319702C2 (en) Impact crusher
DE2816007A1 (en) DEVICE FOR FINE CRUSHING OF MINERAL AND / OR VEGETABLE MATERIALS
WO2013178818A1 (en) Device and method for comminuting parts or goods
CH660073A5 (en) VACUUM DRYING DEVICE.
DE2448092A1 (en) CRUSHER FOR PROCESSING THIN-WALLED SCRAP
DE2353907B2 (en) IMPACT MILL
DE9308860U1 (en) Impact crusher
DE4213608C2 (en) Device for crushing rubber chunks
EP0978317B1 (en) Air-swept crushing machine with rotary impact rotor
DE3138259C2 (en)
DE4140343C2 (en) Sieve drum
DE10018005A1 (en) Method and device for reducing splinter material to powder feeds material to be processed through an inlet in an external wall into a processing chamber for shredding by a rotor.
DE3232504A1 (en) Machine for comminuting bakery products, such as bread remnants and the like
DE102011117418A1 (en) Vertical ball mill for cutting e.g. fibrous grinding stock, has passage opening for grinding stock provided between tubular shaft and base plate, and entry device and discharge device provided in grinding chambers, respectively
DE3123484C2 (en) Shredding device for fibrous material
EP0190417B1 (en) Device for comminuting waste paper
DE2929524A1 (en) GRINDING MACHINE
EP0089571A2 (en) Wood disintegrating device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: IHC HOLLAND N.V.

Owner name: VAN DER ZANDEN, ROSEMARIE

Owner name: VAN DER ZANDEN, HANS

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19960625

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970219

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19970219

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970219

Ref country code: GB

Effective date: 19970219

Ref country code: FR

Effective date: 19970219

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970219

Ref country code: DK

Effective date: 19970219

REF Corresponds to:

Ref document number: 149000

Country of ref document: AT

Date of ref document: 19970315

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59401835

Country of ref document: DE

Date of ref document: 19970327

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 72131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970519

Ref country code: PT

Effective date: 19970519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970608

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

Ref country code: BE

Effective date: 19970630

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19970219

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

BERE Be: lapsed

Owner name: IHC HOLLAND N.V.

Effective date: 19970630

Owner name: VAN DER ZANDEN ROSEMARIE

Effective date: 19970630

Owner name: VAN DER ZANDEN HANS

Effective date: 19970630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Effective date: 19971231

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990723

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010403