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EP0387868A2 - Shredding apparatus for waste wood - Google Patents

Shredding apparatus for waste wood Download PDF

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Publication number
EP0387868A2
EP0387868A2 EP90104879A EP90104879A EP0387868A2 EP 0387868 A2 EP0387868 A2 EP 0387868A2 EP 90104879 A EP90104879 A EP 90104879A EP 90104879 A EP90104879 A EP 90104879A EP 0387868 A2 EP0387868 A2 EP 0387868A2
Authority
EP
European Patent Office
Prior art keywords
rotor
cutting body
cutting
grooves
groove
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
EP90104879A
Other languages
German (de)
French (fr)
Other versions
EP0387868A3 (en
EP0387868B1 (en
Inventor
Karl Hans Ulrich
Wolfgang Pink
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.)
Cambio Ragione Sociale bmh Wood Technology GmbH
Original Assignee
Klockner Maschinen- und Anlagenbau GmbH
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 DE19893908395 external-priority patent/DE3908395C2/en
Application filed by Klockner Maschinen- und Anlagenbau GmbH filed Critical Klockner Maschinen- und Anlagenbau GmbH
Priority to AT90104879T priority Critical patent/ATE89193T1/en
Publication of EP0387868A2 publication Critical patent/EP0387868A2/en
Publication of EP0387868A3 publication Critical patent/EP0387868A3/en
Application granted granted Critical
Publication of EP0387868B1 publication Critical patent/EP0387868B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • 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

Definitions

  • the invention relates to a device for shredding residual and waste wood, bark, plastics, cardboard or the like.
  • a drivable cylindrical rotor With a drivable cylindrical rotor, the outer surface of which is equipped with cutting bodies which are fastened in grooves which are V-shaped in cross section.
  • Devices of this type are used for the production of granules which are fed to incineration, landfill or recycling.
  • the grooves mentioned are screwed spirally into the outer surface of the rotor and thereby lead to jamming during the comminution process by means of comminution material which is clamped between the rotor and the shear bar.
  • the invention has for its object to improve the known device in particular with regard to its performance.
  • the smooth surface design of the rotor jacket surface between the grooves largely prevents the crushing material from jamming between the rotor and shear bar.
  • jams can be reduced to a minimum.
  • This advantageous effect is further increased by the fact that the shear bar forms an angle ( ⁇ ) ⁇ 90 ° with the leading lateral surface of the rotor. Due to this arrangement, the self-retracting effect is significantly reduced.
  • each cutting body is approximately triangular in shape in the circumferential direction.
  • each cutting body is square and can be rotated through 90 ° about a central turning axis.
  • the V-shaped groove has an opening angle ( ⁇ ) of 90 ° and that each cutting body is supported on the two groove flanks in its assembled position.
  • the rotor at both of its axial ends lying outside the working area of the cutting body is equipped with at least one clearing body, the flight circle of which is somewhat smaller than that the cutting body.
  • the rotor can preferably be designed as a solid shaft rotor. It is generally sufficient to arrange the cutting bodies in a single helix on the surface of the rotor. In order to increase the output and to gradate the granulate size, however, several cutting element screw lines can also be provided.
  • the cutting bodies lying side by side in the axial direction can be arranged with an overcut.
  • the distance between the shear bar and the rotor jacket must be adjusted to this overlap.
  • the measures recommended according to the invention reduce the peak loads, the power consumption and downtimes due to material jams and improve the cutting behavior.
  • At least two cutting-body helix lines are provided on the outer surface of the rotor, which are offset by 180 ° with respect to one another, in each case only about half the rotor circumference and in each case only over about half Extend rotor length and each give the shredded material an opposite twist axially to the center of the rotor.
  • This further development of a device results in a concentration of the comminution material in the direction of the central section of the rotor.
  • This has the advantage that the shredding material is not compacted on one side between the rotor, which is designed in particular as a solid shaft rotor, and the shear bar or a switched-on sieve.
  • the device shown only schematically in FIG. 1 comprises a rotor 1 designed as a solid shaft rotor, which is mounted in a fixed position in a machine stand 2 and to which the material to be shredded is fed via a horizontally displaceable hopper 3, the rear wall of which is the material to be shredded against the rotor 1 presses.
  • the rotor 1 is associated with a fixedly arranged and comb-like shearbar 4, which is shown in FIGS. 2 and 3 on an enlarged scale.
  • This shear bar 4 is arranged as close as possible to the rotor 1, so that only a narrow air gap a remains between the shear bar 4 and the outer surface of the rotor 1 (see FIG. 3).
  • the bed knife 4 forms an angle ⁇ ⁇ 90 ° with the leading lateral surface of the rotor 1 (see FIG. 2).
  • each cutting body 5 is fastened in a groove 9 assigned only to it, which is V-shaped and as a secant is formed and has an opening angle ⁇ of 90 ° (see Figure 4).
  • each cutting body 5 is designed as a square cutting plate, which is supported in the assembled position with its lower half on the two flanks of the groove 9 and, with its respective upper, triangular-shaped half, forms the section effective for comminution.
  • FIG. 4 shows that the cutting bodies 5 lying next to one another in the axial direction are arranged with an overcut.
  • grooves 9 lie in mutually parallel planes perpendicular to the rotor axis 10, and that the circumferential surface of the rotor 1 between these grooves 9 has a smooth surface as seen in the circumferential direction.
  • the counter cutting edge 4 engages like a comb between the rotating cutting bodies 5 (see FIG. 3).
  • each cutting body 5 lies against a cutting body carrier 6 and is screwed to the latter by means of a screw 7 shown as an Allen screw (see FIG. 5).
  • the cutting body carrier 6 is welded to the rotor 1.
  • FIGS. 4 and 5 in particular show that each cutting body 5 can be rotated by 90 ° about its central turning axis 11 after it has been removed or before it is installed, and can therefore be used four times.
  • the rotor 1 is equipped at both of its axial ends lying outside the working area of the cutting body 5 with a broaching body 8, the flight circle of which is somewhat smaller than that of the cutting body 5, and the shape of which corresponds to that of the cutting body 5.
  • These clearing bodies 8 clear the inner area next to the side walls of the funnel 3 and thereby prevent material jamming in this area.

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

Abstract

The invention relates to a device for shreading residual and waste wood, bark, plastics, cardboard articles or the like, having a drivable cylindrical rotor whose outer surface is equipped with cutting elements which are mounted in grooves constructed with a V-shaped cross-section. In order to increase power it is primarily proposed to mount each cutting element in a groove assigned only to it and to arrange these grooves in planes which are parallel to one another in each case and located perpendicularly on the rotor axis.

Description

Die Erfindung betrifft eine Vorrichtung zum Zerkleinern von Rest- und Abfallhölzern, Rinden, Kunststoffen, Kartonagen o. dgl. mit einem antreibbaren zylindrischen Rotor, dessen Mantelfläche mit Schneidkörpern bestückt ist, die in im Querschnitt V-förmig ausgebildeten Nuten befestigt sind.The invention relates to a device for shredding residual and waste wood, bark, plastics, cardboard or the like. With a drivable cylindrical rotor, the outer surface of which is equipped with cutting bodies which are fastened in grooves which are V-shaped in cross section.

Derartige Vorrichtungen werden eingesetzt zur Herstellung von Granulat, das einer Verbrennung, Deponierung oder einem Recycling zugeführt wird.Devices of this type are used for the production of granules which are fed to incineration, landfill or recycling.

Bei einer bekanntgewordenen Ausführungsform sind die genannten Nuten spiralförmig in die Mantelfläche des Rotors eingedreht und führen dadurch während des Zerkleinerungsvorganges zu Verklemmun­gen durch Zerkleinerungsmaterial, das zwischen Rotor und Gegen­schneide eingeklemmt wird.In one embodiment which has become known, the grooves mentioned are screwed spirally into the outer surface of the rotor and thereby lead to jamming during the comminution process by means of comminution material which is clamped between the rotor and the shear bar.

Der Erfindung liegt die Aufgabe zugrunde, die vorbekannte Vor­richtung insbesondere hinsichtlich ihrer Leistung zu verbessern.The invention has for its object to improve the known device in particular with regard to its performance.

Diese aufgabe wird gemäß der Erfindung durch folgende Merkmale gelöst:

  • a) Die Schneidkörper sind auf der Mantelfläche in zumindest einer Schraubenlinie angeordnet;
  • b) jeder Schneidkörper ist in einer nur ihm zugeordneten Nut befestigt;
  • c) diese Nuten liegen in zueinander jeweils parallelen, senkrecht auf der Rotorachse stehenden Ebenen;
  • d) zwischen den Nuten ist die Mantelfläche des Rotors in Umfangsrichtung glattflächig ausgebildet;
  • e) eine ortsfest angeordnete Gegenschneide greift kamm­artig zwischen die umlaufenden Schneidkörper ein, wobei zwischen Gegenschneide und Mantelfläche des Rotors nur ein enger Luftspalt (a) verbleibt.
This object is achieved according to the invention by the following features:
  • a) The cutting bodies are arranged on the lateral surface in at least one helix;
  • b) each cutting body is fixed in a groove assigned only to it;
  • c) these grooves lie in mutually parallel planes perpendicular to the rotor axis;
  • d) between the grooves, the outer surface of the rotor is smooth in the circumferential direction;
  • e) a stationary counter knife engages like a comb between the rotating cutting bodies, only a narrow air gap (a) remaining between the counter knife and the outer surface of the rotor.

Durch die glattflächige Ausbildung der Rotor-Mantelfläche zwischen den Nuten wird eine Verklemmung von Zerkleinerungsmate­rial zwischen Rotor und Gegenschneide weitgehend verhindert. Indem das Gegenmesser bis dicht an die Mantelfläche des Rotors ragt, lassen sich Verklemmungen auf ein Minimum reduzieren. Die­se vorteilhafte Wirkung wird noch zusätzlich dadurch erhöht, daß die Gegenschneide mit der vorlaufenden Mantelfläche des Rotors einen Winkel ( β ) ≦ 90° einschließt. Aufgrund dieser Anordnung wird die Selbsteinzugswirkung wesentlich verringert.The smooth surface design of the rotor jacket surface between the grooves largely prevents the crushing material from jamming between the rotor and shear bar. By the counter knife protruding close to the surface of the rotor, jams can be reduced to a minimum. This advantageous effect is further increased by the fact that the shear bar forms an angle (β) ≦ 90 ° with the leading lateral surface of the rotor. Due to this arrangement, the self-retracting effect is significantly reduced.

Um die Schneidkraft möglichst gering zu halten, ist es vorteil­haft, wenn der wirksame Abschnitt jedes Schneidkörpers in Umlauf­richtung gesehen angenähert dreiecksförmig ausgebildet ist.In order to keep the cutting force as low as possible, it is advantageous if the effective section of each cutting body is approximately triangular in shape in the circumferential direction.

Um den Schneidkörper vierfach verwenden zu können, ist es vor­teilhaft, wenn jeder Schneidkörper quadratisch ausgebildet und um eine zentrische Wendeachse um jeweils 90° verdrehbar ist.In order to be able to use the cutting body four times, it is advantageous if each cutting body is square and can be rotated through 90 ° about a central turning axis.

In einer zweckmäßigen Ausführungsform ist vorgesehen, daß die V-­förmige Nut einen Öffnungswinkel (α) von 90° aufweist und daß sich jeder Schneidkörper in seiner montierten Stellung an den beiden Nutflanken abstützt. Durch diese Einbettung des Schneid­körpers in die ihm zugeordnete Nut ist die Lage jedes Schneidkör­pers jeweils eindeutig fixiert.In an expedient embodiment it is provided that the V-shaped groove has an opening angle (α) of 90 ° and that each cutting body is supported on the two groove flanks in its assembled position. By embedding the cutting body in the groove assigned to it, the position of each cutting body is clearly fixed in each case.

Um Verklemmungen des Zerkleinerungsmaterials im Bereich der Sei­tenwände eines Zuführtrichters o. dgl. zu vermeiden, ist es vor­teilhaft, wenn der Rotor an seinen beiden außerhalb des Arbeits­bereiches der Schneidkörper liegenden axialen Enden mit zumindest je einem Räumkörper bestückt ist, dessen Flugkreis etwas kleiner ist als der der Schneidkörper.In order to avoid jamming of the comminution material in the area of the side walls of a feed hopper or the like, it is advantageous if the rotor at both of its axial ends lying outside the working area of the cutting body is equipped with at least one clearing body, the flight circle of which is somewhat smaller than that the cutting body.

Der Rotor kann vorzugsweise als Vollwellenrotor ausgebildet sein. Es reicht grundsätzlich aus, die Schneidkörper in nur einer ein­zigen Schraubenlinie auf der Rotormantelfläche anzuordnen. Zur Erhöhung der Leistung sowie zur Abstufung der Granulatgröße können aber auch mehrere Schneidkörper-Schraubenlinien vorgesehen werden.The rotor can preferably be designed as a solid shaft rotor. It is generally sufficient to arrange the cutting bodies in a single helix on the surface of the rotor. In order to increase the output and to gradate the granulate size, however, several cutting element screw lines can also be provided.

Die in Axialrichtung gesehen jeweils nebeneinander liegenden Schneidkörper können mit Überschnitt angeordnet sein. An diesen Überschnitt ist der Abstand der Gegenschneide vom Rotormantel an­zupassen.The cutting bodies lying side by side in the axial direction can be arranged with an overcut. The distance between the shear bar and the rotor jacket must be adjusted to this overlap.

Durch die erfindungsgemäß empfohlenen Maßnahmen lassen sich die Belastungsspitzen, die Leistungsaufnahme sowie Stillstandszeiten durch Materialverklemmungen verringern und das Zerspanungsverhal­ten verbessern.The measures recommended according to the invention reduce the peak loads, the power consumption and downtimes due to material jams and improve the cutting behavior.

Weiterhin ist es zweckmäßig, wenn auf der Rotor-Mantelfläche zumindest zwei Schneidkörper-Schraubenlinien vorgesehen sind, die um 180° gegeneinander versetzt sind, sich jeweils nur um etwa den halben Rotorumfang und jeweils nur über etwa eine halbe Rotorlänge erstrecken und dem zerkleinerten Material jeweils einen einander axial zur Rotormitte entgegengerichteten Drall verleihen. Durch diese weitergehende Ausbildung einer Vorrichtung ergibt sich eine Konzentration des Zerkleinerungsmaterials in Richtung zum mittleren Abschnitt des Rotors. Dadurch wird der Vorteil erzielt, daß sich das Zerkleinerungsmaterial zwischen dem insbesondere als Vollwellenrotor ausgebildeten Rotor und der Gegenschneide bzw. einem eingeschalteten Sieb nicht einseitig verdichtet.Furthermore, it is expedient if at least two cutting-body helix lines are provided on the outer surface of the rotor, which are offset by 180 ° with respect to one another, in each case only about half the rotor circumference and in each case only over about half Extend rotor length and each give the shredded material an opposite twist axially to the center of the rotor. This further development of a device results in a concentration of the comminution material in the direction of the central section of the rotor. This has the advantage that the shredding material is not compacted on one side between the rotor, which is designed in particular as a solid shaft rotor, and the shear bar or a switched-on sieve.

Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche und werden in Verbindung mit weiteren Vorteilen der Erfindung an­hand eines Bauausführungsbeispieles näher erläutert.Further features of the invention are the subject of the subclaims and are explained in more detail in connection with further advantages of the invention using a construction example.

In der Zeichnung ist eine als Beispiel dienende Ausführungsform der Erfindung dargestellt. Es zeigen:

  • Figur 1 - in schematischer Darstellung in Seitenansicht und zum Teil im Längsschnitt eine Zerkleinerungsvor­richtung;
  • Figur 2 - in vergrößertem Maßstab ein Detail der Figur 1;
  • Figur 3 - die Darstellung gemäß Figur 2 in Stirnansicht;
  • Figur 4 - ein Detail der Figur 3 in vergrößertem Maßstab und
  • Figur 5 - einen Schnitt gemäß der Linie A-B in Figur 4.
In the drawing, an exemplary embodiment of the invention is shown. Show it:
  • Figure 1 - in a schematic representation in side view and partly in longitudinal section a shredding device;
  • Figure 2 - on an enlarged scale a detail of Figure 1;
  • Figure 3 - the representation of Figure 2 in front view;
  • Figure 4 - a detail of Figure 3 on an enlarged scale and
  • Figure 5 - a section along the line AB in Figure 4.

Die in Figur 1 nur schematisch dargestellte Vorrichtung umfaßt einen als Vollwellenrotor ausgebildeten Rotor 1, der ortsfest in einem Maschinenständer 2 gelagert ist, und dem das zu zerklei­nernde Material über einen horizontal verschiebbaren Trichter 3 zugeführt wird, dessen Rückwand das zu zerkleinernde Material ge­gen den Rotor 1 drückt. Dem Rotor 1 ist eine ortsfest angeordnete und kammartig ausgebildete Gegenschneide 4 zugeordnet, die in den Figuren 2 und 3 in vergrößertem Maßstab dargestellt ist. Diese Gegenschneide 4 ist möglichst dicht am Rotor 1 angeordnet, so daß zwischen Gegenschneide 4 und Mantelfläche des Rotors 1 nur ein enger Luftspalt a verbleibt (siehe Figur 3). Außerdem schließt die Gegenschneide 4 mit der vorlaufenden Mantelfläche des Rotors 1 einen Winkel β < 90° ein (siehe Figur 2).The device shown only schematically in FIG. 1 comprises a rotor 1 designed as a solid shaft rotor, which is mounted in a fixed position in a machine stand 2 and to which the material to be shredded is fed via a horizontally displaceable hopper 3, the rear wall of which is the material to be shredded against the rotor 1 presses. The rotor 1 is associated with a fixedly arranged and comb-like shearbar 4, which is shown in FIGS. 2 and 3 on an enlarged scale. This shear bar 4 is arranged as close as possible to the rotor 1, so that only a narrow air gap a remains between the shear bar 4 and the outer surface of the rotor 1 (see FIG. 3). In addition, the bed knife 4 forms an angle β <90 ° with the leading lateral surface of the rotor 1 (see FIG. 2).

Die Mantelfläche des antreibbaren Rotors 1 ist mit Schneidkörpern 5 bestückt, die gemäß Figur 3 jeweils in Form einer Schrauben­linie 12 angeordnet sind. Jeder Schneidkörper 5 ist in einer nur ihm zugeordneten Nut 9 befestigt, die V-förmig sowie als Sekante ausgebildet ist und einen Öffnungswinkel α von 90° aufweist (siehe Figur 4). Jeder Schneidkörper 5 ist von vorn gesehen als quadratische Schneidplatte ausgebildet, die sich in montierter Stellung mit ihrer unteren Hälfte an den beiden Flanken der Nut 9 abstützt und mit ihrer jeweils oberen, dreiecksförmigen Hälfte den für die Zerkleinerung wirksamen Abschnitt bildet. Figur 4 läßt erkennen, daß die in axialer Richtung gesehen nebeneinander liegenden Schneidkörper 5 mit Überschnitt angeordnet sind. Figur 3 mach ferner deutlich, daß die Nuten 9 in zueinander jeweils parallelen, senkrecht auf der Rotorachse 10 stehenden Ebenen lie­gen, und daß die Mantelfläche des Rotors 1 zwischen diesen Nuten 9 in Umfangsrichtung gesehen glattflächig ausgebildet ist. Die Gegenschneide 4 greift kammartig zwischen die umlaufenden Schneidkörper 5 ein (siehe Figur 3).The outer surface of the drivable rotor 1 is equipped with cutting bodies 5 which are each arranged in the form of a helix 12 according to FIG. 3. Each cutting body 5 is fastened in a groove 9 assigned only to it, which is V-shaped and as a secant is formed and has an opening angle α of 90 ° (see Figure 4). Viewed from the front, each cutting body 5 is designed as a square cutting plate, which is supported in the assembled position with its lower half on the two flanks of the groove 9 and, with its respective upper, triangular-shaped half, forms the section effective for comminution. FIG. 4 shows that the cutting bodies 5 lying next to one another in the axial direction are arranged with an overcut. FIG. 3 also makes it clear that the grooves 9 lie in mutually parallel planes perpendicular to the rotor axis 10, and that the circumferential surface of the rotor 1 between these grooves 9 has a smooth surface as seen in the circumferential direction. The counter cutting edge 4 engages like a comb between the rotating cutting bodies 5 (see FIG. 3).

Jeder Schneidkörper 5 liegt mit seiner Rückseite an einem Schneidkörperträger 6 an und ist mit diesem über eine als Inbus­schraube dargestellte Schraube 7 verschraubt (siehe Figur 5). Der Schneidkörperträger 6 ist mit dem Rotor 1 verschweißt.The back of each cutting body 5 lies against a cutting body carrier 6 and is screwed to the latter by means of a screw 7 shown as an Allen screw (see FIG. 5). The cutting body carrier 6 is welded to the rotor 1.

Insbesondere die Figuren 4 und 5 lassen erkennen, daß jeder Schneidkörper 5 nach seinem Ausbau bzw. vor seinem Einbau um je­weils 90° um seine zentrische Wendeachse 11 verdrehbar ist und dadurch vierfach verwendet werden kann.FIGS. 4 and 5 in particular show that each cutting body 5 can be rotated by 90 ° about its central turning axis 11 after it has been removed or before it is installed, and can therefore be used four times.

Gemäß Figur 3 ist der Rotor 1 an seinen beiden außerhalb des Arbeitsbereiches der Schneidkörper 5 liegenden axialen Enden mit je einem Räumkörper 8 bestückt, dessen Flugkreis etwas kleiner ist als der der Schneidkörper 5, und dessen Form der der Schneid­körper 5 entspricht. Diese Räumkörper 8 räumen den inneren Bereich neben den Seitenwänden des Trichters 3 frei und verhin­dern dadurch in diesem Bereich eine Materialverklemmung.According to FIG. 3, the rotor 1 is equipped at both of its axial ends lying outside the working area of the cutting body 5 with a broaching body 8, the flight circle of which is somewhat smaller than that of the cutting body 5, and the shape of which corresponds to that of the cutting body 5. These clearing bodies 8 clear the inner area next to the side walls of the funnel 3 and thereby prevent material jamming in this area.

Claims (12)

1. Vorrichtung zum Zerkleinern von Rest- und Abfallhölzern, Rinden, Kunststoffen, Kartonagen o. dgl. mit einem antreib­baren zylindrischen Rotor (1), dessen Mantelfläche mit Schneidkörpern (5) bestückt ist, die in im Querschnitt V-­förmig ausgebildeten Nuten (9) befestigt sind, gekennzeich­net durch folgende Merkmale: a) Die Schneidkörper (5) sind auf der Mantelfläche in zu­mindest einer Schraubenlinie (12) angeordnet; b) jeder Schneidkörper (5) ist in einer nur ihm zugeordne­ten Nut (9) befestigt; c) diese Nuten (9) liegen in zueinander jeweils paralle­len, senkrecht auf der Rotorachse (10) stehenden Ebenen; d) zwischen den Nuten (9) ist die Mantelfläche des Rotors (1) in Umfangsrichtung glattflächig ausgebildet; e) eine ortsfest angeordnete Gegenschneide (4) greift kammartig zwischen die umlaufenden Schneidkörper (5) ein, wobei zwischen Gegenschneide (4) und Mantelfläche des Rotors (1) nur ein enger Luftspalt (a) verbleibt. 1.Device for shredding residual and waste wood, bark, plastics, cardboard boxes or the like with a drivable cylindrical rotor (1), the outer surface of which is equipped with cutting bodies (5) which are formed in cross-sectionally V-shaped grooves (9 ) are attached, characterized by the following features: a) The cutting bodies (5) are arranged on the lateral surface in at least one helix (12); b) each cutting body (5) is fastened in a groove (9) assigned only to it; c) these grooves (9) lie in mutually parallel planes perpendicular to the rotor axis (10); d) between the grooves (9), the outer surface of the rotor (1) is smooth in the circumferential direction; e) a fixedly arranged shear bar (4) engages like a comb between the circumferential cutting bodies (5), whereby between shear bar (4) and lateral surface only a narrow air gap (a) remains of the rotor (1). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der wirksame Abschnitt jedes Schneidkörpers (5) in Umlaufrich­tung gesehen angenähert dreiecksförmig ausgebildet ist.2. Device according to claim 1, characterized in that the effective portion of each cutting body (5) is approximately triangular in shape in the circumferential direction. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß jeder Schneidkörper (5) quadratisch ausgebildet und um eine zentrische Wendeachse (11) um jeweils 90° verdrehbar ist.3. Apparatus according to claim 2, characterized in that each cutting body (5) is square and rotatable about a central turning axis (11) by 90 °. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die V-förmige Nut (9) einen Öffnungswinkel (α) von 90° auf­weist und daß sich jeder Schneidkörper (5) in seiner mon­tierten Stellung an den beiden Nutflanken abstützt.4. The device according to claim 3, characterized in that the V-shaped groove (9) has an opening angle (α) of 90 ° and that each cutting body (5) is supported in its assembled position on the two groove flanks. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jeder Schneidkörper (5) mit seiner Rück­seite an einem Schneidkörperträger (6) anliegt und mit diesem verschraubt ist.5. Device according to one of the preceding claims, characterized in that each cutting body (5) rests with its back against a cutting body carrier (6) and is screwed to it. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Schneidkörperträger (6) mit dem Rotor (1) verschweißt ist.6. The device according to claim 5, characterized in that the cutting body carrier (6) with the rotor (1) is welded. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schneidkörper (5) axial gesehen ist Überschnitt angeordnet sind.7. Device according to one of the preceding claims, characterized in that the cutting body (5) seen axially overcut are arranged. 8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Rotor (1) an seinen beiden außerhalb des Arbeitsbereiches der Schneidkörper (5) liegenden axialen Enden mit zumindest je einem Räumkörper (8) bestückt ist, dessen Flugkreis etwas kleiner ist als der der Schneidkörper (5).8. Device according to one of the preceding claims, characterized in that the rotor (1) at its two outside of the working area of the cutting body (5) lying axial ends is equipped with at least one clearing body (8), the flight circle of which is somewhat smaller than that the cutting body (5). 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Räumkörper (8) die gleiche Form aufweisen wie die Schneid­körper (5).9. The device according to claim 8, characterized in that the clearing body (8) have the same shape as the cutting body (5). 10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Nut (9) als Sekante ausgebildet ist.10. Device according to one of the preceding claims, characterized in that each groove (9) is designed as a secant. 11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Gegenschneide (4) mit der vorlaufen­den Mantelfläche des Rotors (1) einen Winkel (β) ≦ 90° ein­schließt.11. Device according to one of the preceding claims, characterized in that the shear bar (4) with the leading lateral surface of the rotor (1) encloses an angle (β) ≦ 90 °. 12. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf der Rotor-Mantelfläche zumindest zwei Schneidkörper-Schraubenlinien (12) vorgesehen sind, die um 180° gegeneinander versetzt sind, sich jeweils nur um etwa den halben Rotorumfang und jeweils nur über etwa eine halbe Rotorlänge erstrecken und dem zerkleinerten Material jeweils einen einander axial zur Rotormitte entgegengerich­teten Drall verleihen.12. Device according to one of the preceding claims, characterized in that at least two cutting element helical lines (12) are provided on the outer surface of the rotor, which are offset by 180 ° relative to one another, in each case only about half the rotor circumference and in each case only about extend half a rotor length and each give the shredded material an opposite twist axially to the center of the rotor.
EP90104879A 1989-03-15 1990-03-15 Shredding apparatus for waste wood Expired - Lifetime EP0387868B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104879T ATE89193T1 (en) 1989-03-15 1990-03-15 DEVICE FOR SHREDDING WASTE WOOD AND WASTE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3908395 1989-03-15
DE19893908395 DE3908395C2 (en) 1989-03-15 1989-03-15 Device for shredding residual and waste wood
DE3938820A DE3938820A1 (en) 1989-03-15 1989-11-23 DEVICE FOR CRUSHING RESIDUAL AND WASTE WOODS
DE3938820 1989-11-23

Publications (3)

Publication Number Publication Date
EP0387868A2 true EP0387868A2 (en) 1990-09-19
EP0387868A3 EP0387868A3 (en) 1991-01-30
EP0387868B1 EP0387868B1 (en) 1993-05-12

Family

ID=25878821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104879A Expired - Lifetime EP0387868B1 (en) 1989-03-15 1990-03-15 Shredding apparatus for waste wood

Country Status (2)

Country Link
EP (1) EP0387868B1 (en)
DE (2) DE3938820A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013860A1 (en) * 1992-01-15 1993-07-22 Gross, Stefan Chopping device, and a chopper blade for such a device
WO1995011206A1 (en) * 1993-10-20 1995-04-27 Universal Greening Pty Ltd Composting apparatus
AT399670B (en) * 1992-11-04 1995-06-26 Lindner Ges M B H Maschf Device for the comminution of waste materials
EP0767004A1 (en) * 1995-10-04 1997-04-09 Holz-, Metall-, Abfall-, Recyclingtechnik GmbH Cutting tool for disintegrators
EP0908238A1 (en) 1997-10-06 1999-04-14 UNTERWURZACHER PATENTVERWERTUNGSGESELLSCHAFT mbH Material shredding apparatus
AT406354B (en) * 1998-07-20 2000-04-25 Wilhelm Bluemlinger CRUSHING DEVICE
FR2785202A1 (en) * 1999-05-19 2000-05-05 Guy Auguste Emile Sosson Shredding machine for large objects, comprises cutting blades shredding material through shock and shearing forces
FR2785205A1 (en) 1998-10-30 2000-05-05 Phenix Ind Chipping mill for waste material, comprises frame for retracting feed funnel, interchangeable cutter, power source and discharge conveyor
WO2011048030A1 (en) 2009-10-23 2011-04-28 C.M.G. S.P.A. Improvements in machines for shredding various materials such as blocks of plastics, wood residues, cardboard packaging and so forth
CN103480469A (en) * 2013-09-02 2014-01-01 胡必胜 Crushing rolling wheel for plastic chips
CN111841817A (en) * 2020-07-23 2020-10-30 王清冬 Purple sand raw ore material processing system and processing method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242740C2 (en) * 1992-12-17 1998-09-10 Holz Metall Abfall Recyclingte Shredding machine
DE29504464U1 (en) * 1995-03-16 1995-05-11 Greß Holzaufbereitungs GmbH, 07356 Lobenstein Plant for processing wood, especially waste wood

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216470A (en) * 1962-07-09 1965-11-09 Soderhamns Verkst Er Ab Method and a machine for producing wood particles
US3202369A (en) * 1963-01-16 1965-08-24 Steel Briquette Corp Rotary sheet metal tearing devices
DE2702177A1 (en) * 1977-01-20 1978-07-27 Kloeckner Gmbh & Co Geb Waste material pulverising rollers - rotating in opposite directions at different speeds and having hard metal tipped teeth
DE2943567A1 (en) * 1979-10-29 1981-04-30 Peter 5439 Bretthausen Voelskow Fragmenting machine which works by tearing - has cylinder with helically set square cross=section teeth on cylindrical stubs fitted radially

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013860A1 (en) * 1992-01-15 1993-07-22 Gross, Stefan Chopping device, and a chopper blade for such a device
AT399670B (en) * 1992-11-04 1995-06-26 Lindner Ges M B H Maschf Device for the comminution of waste materials
WO1995011206A1 (en) * 1993-10-20 1995-04-27 Universal Greening Pty Ltd Composting apparatus
EP0767004A1 (en) * 1995-10-04 1997-04-09 Holz-, Metall-, Abfall-, Recyclingtechnik GmbH Cutting tool for disintegrators
EP1184080A1 (en) * 1995-10-04 2002-03-06 Holz-, Metall-, Abfall-, Recyclingtechnik GmbH Cutting tool for disintegrators
EP0908238A1 (en) 1997-10-06 1999-04-14 UNTERWURZACHER PATENTVERWERTUNGSGESELLSCHAFT mbH Material shredding apparatus
AT406354B (en) * 1998-07-20 2000-04-25 Wilhelm Bluemlinger CRUSHING DEVICE
FR2785205A1 (en) 1998-10-30 2000-05-05 Phenix Ind Chipping mill for waste material, comprises frame for retracting feed funnel, interchangeable cutter, power source and discharge conveyor
FR2785202A1 (en) * 1999-05-19 2000-05-05 Guy Auguste Emile Sosson Shredding machine for large objects, comprises cutting blades shredding material through shock and shearing forces
WO2011048030A1 (en) 2009-10-23 2011-04-28 C.M.G. S.P.A. Improvements in machines for shredding various materials such as blocks of plastics, wood residues, cardboard packaging and so forth
CN103480469A (en) * 2013-09-02 2014-01-01 胡必胜 Crushing rolling wheel for plastic chips
CN111841817A (en) * 2020-07-23 2020-10-30 王清冬 Purple sand raw ore material processing system and processing method

Also Published As

Publication number Publication date
DE3938820A1 (en) 1991-05-29
DE59001396D1 (en) 1993-06-17
EP0387868A3 (en) 1991-01-30
EP0387868B1 (en) 1993-05-12

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