EP0486872B1 - Rotary shredding machine for the reduction of waste material - Google Patents
Rotary shredding machine for the reduction of waste material Download PDFInfo
- Publication number
- EP0486872B1 EP0486872B1 EP91118869A EP91118869A EP0486872B1 EP 0486872 B1 EP0486872 B1 EP 0486872B1 EP 91118869 A EP91118869 A EP 91118869A EP 91118869 A EP91118869 A EP 91118869A EP 0486872 B1 EP0486872 B1 EP 0486872B1
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- EP
- European Patent Office
- Prior art keywords
- rotor
- comminution
- coarse
- fine
- rotors
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- 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.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C18/182—Disc-shaped knives
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- 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
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
Definitions
- the invention relates to a rotor shear for crushing waste, in particular of metallic and non-metallic waste material, with two oppositely driven, intermeshing rotors made of rotor disks provided with cutting edges.
- a rotor shear of this type has become known from DE-OS 30 33 752. Waste such as bulky waste, household waste, old tires, bottles or containers, e.g. Barrels made of metal, plastic or the like. crushed. Due to the shape of the rotors, they exert a kind of collecting or pocket effect on the bulky material fed through a hopper, which causes most materials to be drawn in without the aid of a pressure element (tamper).
- the invention has for its object to improve the operation of a rotor shear, in particular to make it more variable with regard to the size reduction result.
- the rotors have at least one coarse and one fine grinding area. To carry out both a coarse and a fine comminution, all that is required is a single rotor shear with two rotors and at least one drive, which then also drives the second rotor via an intermediate gear.
- the two rotors are assigned to each other in the scissor housing in such a way that the two coarse and fine comminution areas interact.
- Each rotor consists of coarsely shredding, wider rotor disks and fine shredding, narrower rotor disks.
- the rotors are consequently divided into two lengths with different rotor disc configurations; where the rotors are wide Own rotor disks, the coarse shredding area is located on a partial length of the rotors.
- the materials to be comminuted can be fed to the desired comminution stage in a targeted manner and without interfering with one another or mixing with one another.
- the coarsely comminuting rotor disks are approximately twice as wide as the finely comminuting rotor disks arranged on the remaining length of the rotors.
- the rotor disks can be adapted to any requirement profile for the degree of coarse or fine comminution.
- the finely comminuting rotor disks have a larger number of cutting teeth than the coarsely comminuting rotor disks, the finer tooth pitch results in an even finer degree of comminution than is already achieved due to the different widths of the rotor disks.
- the coarse shredding area of the rotors can advantageously be made larger than the fine shredding area.
- Each rotor thus consists of coarsely comminuting rotor disks over more than half of its length, the partial lengths of the coarse and fine comminution areas preferably being in the ratio of about 3: 2.
- a discharge conveyor assigned to the coarse shredding area is connected to an ascending conveyor which ends above the filling trough and is assigned to the fine shredding area.
- the coarse or pre-shredded material reaches the fine shredder, for example, via a discharge conveyor starting from the outlet of the coarse shredding area and a subsequent inclined slide on the ascending conveyor. Since the discharge conveyor delivers the coarsely shredded material to the ascending conveyor in the material flow, the fine shredding area can be continuously supplied with pre-shredded material.
- the material is then finally removed from the comminution process, for example by a further conveyor, which may also be fed via an inclined chute, and is carried away under the scissor outlet in the section of the fine comminution area.
- the rotor shear according to the invention can optionally also be operated in such a way that only coarse or fine comminution is carried out; in this case, only the corresponding shredding area of the rotors is supplied with material.
- the ascending conveyor to the fine shredder can advantageously be preceded by a sieving stage, alternatively or additionally a suction stage and / or a magnetic separator. If the material following the coarse shredding is first passed, for example, through a sieve drum with a combined suction, dirt and materials which have already been chopped up sufficiently, as well as hard materials, can be removed Remove iron parts from the material flow before the coarsely shredded material is thrown into the fine shredding area of the rotary shears. The fine crushing process is thus relieved of dirt and already sufficiently crushed material; The comparatively more sensitive tools are protected from damage by removing the iron parts beforehand.
- the rotor shear 1 consists of a housing 2, which is supported on the foundation 4 via legs 3, and a filling trough 5 which opens into the housing 2 from above.
- a pre-compressor 6 which can be pivoted into the filling trough 5 from the side is connected to the scissor frame by means of at least one acted upon movably mounted adjusting cylinder 7.
- its end wall 8 facing the filling trough forms a surface which is flush with the filling trough wall 9.
- the end wall 8 cf. number 8'
- the end wall 8 actively acts on the material, not shown, fed via the filling trough 5, in order to prevent the material being drawn in between two stored in the housing 2 Support rotors 11, 12.
- the rotors 11, 12 each provided with their own drive 13, 14 (cf. FIG. 3) are driven in opposite directions in such a way that both rotate downward in the overlap region.
- the rotors 11, 12 each consist of rotor disks 19, 21 arranged on a shaft 15, 16 and provided with cutting teeth 17, 18 (cf. FIGS. 1 and 2).
- FIG. 3 in the detail of FIG Rotor 12 is shown, the rotors 11 and 12 are equipped with rotor disks 19 on a partial length 22 that is more than half the total length of the rotors and rotor disks 21 on the remaining length 23.
- the rotor disks 19 are on the one hand wider and on the other hand have fewer teeth 17 than the rotor disks 21 which, due to their smaller width and larger number of teeth 18 (see FIGS. 1 and 2), divide material fed via the filling trough 5 much more finely than that Rotor disks 19.
- the wide rotor disks 19 arranged on the partial length 22 thus form a coarse shredding area 24, and the narrow rotor disks 21 arranged on the remaining length 23 of the rotors 11, 12 form a fine shredding area 25 of the rotor shears 1, in which the mostly strip-shaped material from the coarse shredding area transversely is divided.
- Above the rotors 11, 12 extends in the transition from the coarse to the fine comminution area 24, 25 a dividing wall 26 dividing the filling trough 5 according to its different comminution areas (cf. Fig. 3); it ensures that the materials of different sizes supplied to the separate work areas via the filling trough 5 do not mix.
- An inclined chute 28 arranged under the housing 2 at the scissor outlet 27 directs the material pre-comminuted in the coarse comminution area 24 by the rotor disks 19 with its teeth 17 to a discharge conveyor 31 surrounded by a belt box 29 in the ejecting area of the inclined chute 28.
- the conveyor 31 throws the material transported from the coarse shredding area 24 at its head end 33 into an inclined chute 34, which forwards the material to an ascending conveyor 36 protected in the takeover area by a belt box 35.
- Both the removal conveyor 31 arranged below the rotor shears 1 and the ascending conveyor 36 are supported on the foundation 4 by means of posts 37.
- the head end 38 of the ascending conveyor 36 ends above the feed section of the filling trough 5 assigned to the fine comminution area 25 of the rotors 11, 12, so that the coarsely pre-comminuted, often strip-shaped material 32 reaches the rotor shears 1 again in a continuous pass, but then there in the fine comminution area 25 is crushed.
- both a coarse and a fine comminution of coarse, bulky piece goods can be achieved in an uninterrupted processing sequence with just one rotor shear. This does not preclude, if desired, either to carry out only a coarse or only a fine comminution of the material fed in, or to simultaneously work separately in a fine and coarse comminution; all that is needed is to allocate and allocate the necessary funding.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
Die Erfindung betrifft eine Rotorenschere zum Zerkleinern von Abfall, insbesondere von metallischem und nichtmetallischem Altmaterial, mit zwei gegenläufig angetriebenen, miteinander kämmenden Rotoren aus mit Schneiden versehenen Rotorscheiben.The invention relates to a rotor shear for crushing waste, in particular of metallic and non-metallic waste material, with two oppositely driven, intermeshing rotors made of rotor disks provided with cutting edges.
Eine Rotorenschere dieser Art ist durch die DE-OS 30 33 752 bekanntgeworden. In Rotorenscheren werden Abfälle wie Sperrmüll, Haushaltsmüll, Altreifen, Flaschen oder Behälter, z.B. Fässer aus Metall, Kunststoff od.dgl. zerkleinert. Aufgrund der Formgebung der Rotoren üben diese auf das durch einen Fülltrichter zugeführte, sperrige Material eine, Art Sammel- bzw. Tascheneffekt aus, der das Einziehen der meisten Materialien ohne Zuhilfenahme eines Druckgliedes (Stopfers) bewirkt.A rotor shear of this type has become known from DE-OS 30 33 752. Waste such as bulky waste, household waste, old tires, bottles or containers, e.g. Barrels made of metal, plastic or the like. crushed. Due to the shape of the rotors, they exert a kind of collecting or pocket effect on the bulky material fed through a hopper, which causes most materials to be drawn in without the aid of a pressure element (tamper).
Jedoch treten bei großen Stückgütern (Fässer, Kühlschränke, Reifen, Behälter, Holz etc.) manchmal Probleme beim Einziehen der Materialien zwischen die Rotoren auf. Konstruktionsbedingt schneiden Rotorenscheren das Material in Streifenform. Diese Streifen können je nach Materialart mehr oder weniger lang sein. Feine Zerkleinerungsgrade werden jedoch in vielen Fällen gewünscht, z.B. um bei der Kühlschrankzerkleinerung so kleine Stücke des Isolierschaumes zu erhalten, die ein Freisetzen von FCKW's durch anschließendes Auspressen ermöglichen, oder um sauberen Metallschrott zu erhalten, der nämlich beim Feinzerkleinern aufgrund der Biegeverformungsvorgänge von Belägen, wie z.B. Farben oder der erwähnten Schaumstoffisolierung befreit wird. Betriebsintern ist schon überlegt worden, das vorzerkleinerte, streifenförmige Material in einem zweiten Arbeitsgang durch eine weitere, für die Feinzerkleinerung (Querunterteilung der Streifen) geeignete Rotorenschere zu führen. Der damit verbundene Maschinenaufwand ist jedoch mindestens doppelt so groß.However, with large piece goods (drums, refrigerators, tires, containers, wood, etc.), problems sometimes arise when the materials are drawn between the rotors. Due to the design, rotary shears cut the material into strips. Depending on the type of material, these strips can be more or less long. In many cases, however, fine degrees of comminution are desired, for example in order to shred pieces of the insulating foam that are so small in the refrigerator to be obtained, which enable CFCs to be released by subsequent pressing, or to obtain clean metal scrap, which is removed from deposits, such as paints or the foam insulation mentioned, due to the bending deformation processes. It has already been considered within the company to guide the pre-shredded, strip-shaped material in a second operation through another rotor shear suitable for fine shredding (transverse division of the strips). The associated machine effort is at least twice as large.
Der Erfindung liegt die Aufgabe zugrunde, die Betriebsweise einer Rotorenschere zu verbessern, insbesondere hinsichtlich des Zerkleinerungsergebnisses variabler zu gestalten.The invention has for its object to improve the operation of a rotor shear, in particular to make it more variable with regard to the size reduction result.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Hauptanspruchs gelöst, daß die Rotoren zumindest einen Grob- und einen Feinzerkleinerungsbereich aufweisen. Um sowohl eine Grob- als auch eine Feinzerkleinerung durchzuführen, bedarf es somit lediglich einer einzigen Rotorenschere mit zwei Rotoren und mindestens einem Antrieb, der dann über ein Zwischengetriebe auch den zweiten Rotor antreibt. Die beiden Rotoren sind im Scherengehäuse einander so zugeordnet, daß jeweils die beiden Grob- bzw. Feinzerkleinerungsbereiche zusammenwirken.This object is achieved with the features of the main claim that the rotors have at least one coarse and one fine grinding area. To carry out both a coarse and a fine comminution, all that is required is a single rotor shear with two rotors and at least one drive, which then also drives the second rotor via an intermediate gear. The two rotors are assigned to each other in the scissor housing in such a way that the two coarse and fine comminution areas interact.
Jeder Rotor besteht aus grobzerkleinernden, breiteren Rotorscheiben und aus feinzerkleinernden, schmaleren Rotorscheiben. Die Rotoren sind folglich in zwei Längenabschnitte mit unterschiedlicher Rotorscheibenbestückung unterteilt; dort, wo die Rotoren breite Rotorscheiben besitzen, befindet sich auf einer Teillänge der Rotoren der Grobzerkleinerungsbereich.Each rotor consists of coarsely shredding, wider rotor disks and fine shredding, narrower rotor disks. The rotors are consequently divided into two lengths with different rotor disc configurations; where the rotors are wide Own rotor disks, the coarse shredding area is located on a partial length of the rotors.
Durch die in der Füllmulde oberhalb der Rotoren im Übergang vom Grob- zum Feinzerkleinerungsbereich angeordnete Trennwand lassen sich die zu zerkleinernden Materialien der jeweils gewünschten Zerkleinerungsstufe gezielt, und ohne sich gegenseitig zu stören bzw. miteinander zu vermischen, zuführen.Due to the dividing wall arranged in the filling trough above the rotors in the transition from the coarse to the fine comminution area, the materials to be comminuted can be fed to the desired comminution stage in a targeted manner and without interfering with one another or mixing with one another.
Es empfiehlt sich, daß die grobzerkleinernden Rotorscheiben etwa doppelt so breit wie die auf der Restlänge der Rotoren angeordneten, feinzerkleinernden Rotorscheiben sind. Letztendlich lassen sich die Rotorscheiben jedoch an beliebige Anforderungsprofile für den Grad der Grob- bzw. Feinzerkleinerung anpassen.It is recommended that the coarsely comminuting rotor disks are approximately twice as wide as the finely comminuting rotor disks arranged on the remaining length of the rotors. Ultimately, however, the rotor disks can be adapted to any requirement profile for the degree of coarse or fine comminution.
Wenn die feinzerkleinernden Rotorscheiben eine größere Anzahl Schneidzähne besitzen als die grobzerkleinernden Rotorscheiben, ergibt sich aufgrund der feineren Zahnteilung ein noch feinerer Zerkleinerungsgrad, als aufgrund der unterschiedlichen Breiten der Rotorscheiben ohnehin schon erreicht wird.If the finely comminuting rotor disks have a larger number of cutting teeth than the coarsely comminuting rotor disks, the finer tooth pitch results in an even finer degree of comminution than is already achieved due to the different widths of the rotor disks.
Vorteilhaft läßt sich der Grobzerkleinerungsbereich der Rotoren größer als der Feinzerkleinerungsbereich ausbilden. Jeder Rotor besteht somit auf mehr als der Hälfte seiner Länge aus grobzerkleinernden Rotorscheiben, wobei die Teillängen des Grob- und des Feinzerkleinerungsbereichs vorzugsweise im Verhältnis von etwa 3:2 liegen können. Mit dem gegenüber der Feinzerkleinerung größeren Bereich der Grobzerkleinerung wird berücksichtigt, daß der Grobzerkleinerung große, sperrige Stückgüter zugeführt werden, während hingegen in den Feinzerkleinerungsbereich ausschließlich schon zerkleinertes und/oder von vornherein weniger sperriges Material gelangt.The coarse shredding area of the rotors can advantageously be made larger than the fine shredding area. Each rotor thus consists of coarsely comminuting rotor disks over more than half of its length, the partial lengths of the coarse and fine comminution areas preferably being in the ratio of about 3: 2. With the larger area of the coarse shredding compared to the fine shredding, it is taken into account that large, bulky piece goods are fed into the coarse shredding, whereas only finely shredded and / or less bulky material reaches the fine shredding area.
Nach einem Vorschlag der Erfindung steht ein dem Grobzerkleinerungsbereich zugeordneter Abförderer mit einem über der Füllmulde endenden, dem Feinzerkleinerungsbereich zugeordneten Steigförderer in Verbindung. Auf diese Weise läßt sich ein kontinuierlicher Fein- und Grobzerkleinerungs-Durchlauf der Rotorenschere ermöglichen, insbesondere dann, wenn z.B. Fässer, Paletten, Kühl- und Gefrierschrankgehäuse etc. feinstmöglich zerkleinert werden sollen. Das grob- bzw. vorzerkleinerte Material gelangt beispielsweise über einen vom Auslaß des Grobzerkleinerungsbereichs ausgehenden Abförderer und eine sich daran anschließende Schrägrutsche auf dem Steigförderer zum Feinzerkleinerer. Da der Abförderer das grobzerkleinerte Material im Materialfluß an den Steigförderer abgibt, läßt sich der Feinzerkleinerungsbereich stetig mit vorzerkleinertem Material versorgen. Im Anschluß an die Feinzerkleinerung wird das Material dann endgültig aus dem Zerkleinerungsprozeß herausgenommen, beispielsweise von einem unter dem Scherenauslaß im Abschnitt des Feinzerkleinerungsbereichs verlaufenden, weiteren - gegebenenfalls auch über eine Schrägrutsche gespeisten - Abförderer abtransportiert. Die erfindungsgemäße Rotorenschere läßt sich gegebenenfalls auch so betreiben, daß nur grob- oder feinzerkleinert wird; in diesem Fall wird jeweils nur der entsprechende Zerkleinerungsbereich der Rotoren mit Material versorgt.According to a proposal of the invention, a discharge conveyor assigned to the coarse shredding area is connected to an ascending conveyor which ends above the filling trough and is assigned to the fine shredding area. In this way, a continuous fine and coarse shredding run of the rotor shears can be made possible, in particular if e.g. Barrels, pallets, refrigerator and freezer housings etc. should be minced as finely as possible. The coarse or pre-shredded material reaches the fine shredder, for example, via a discharge conveyor starting from the outlet of the coarse shredding area and a subsequent inclined slide on the ascending conveyor. Since the discharge conveyor delivers the coarsely shredded material to the ascending conveyor in the material flow, the fine shredding area can be continuously supplied with pre-shredded material. Following the fine comminution, the material is then finally removed from the comminution process, for example by a further conveyor, which may also be fed via an inclined chute, and is carried away under the scissor outlet in the section of the fine comminution area. The rotor shear according to the invention can optionally also be operated in such a way that only coarse or fine comminution is carried out; in this case, only the corresponding shredding area of the rotors is supplied with material.
Vorteilhaft läßt sich dem Steigförderer zum Feinzerkleinerer eine Absieb-, alternativ oder ergänzend eine Absaugstufe und/oder ein Magnetscheider vorschalten. Wenn das Material im Anschluß an die Grobzerkleinerung beispielsweise zunächst über eine Siebtrommel mit kombinierter Absaugung geleitet wird, lassen sich Schmutz und schon beim Grobzerkleinern ausreichend zerstückelte Materialien sowie harte Eisenteile aus dem Materialstrom entfernen, bevor das grobzerkleinerte Material in den Feinzerkleinerungsbereich der Rotorenschere abgeworfen wird. Der Feinzerkleinerungsprozeß ist damit entlastet von Schmutz und schon ausreichend zerkleinertem Material; durch vorherige Entnahme der Eisenteile sind die vergleichsweise empfindlicheren Werkzeuge vor Beschädigungen geschützt.The ascending conveyor to the fine shredder can advantageously be preceded by a sieving stage, alternatively or additionally a suction stage and / or a magnetic separator. If the material following the coarse shredding is first passed, for example, through a sieve drum with a combined suction, dirt and materials which have already been chopped up sufficiently, as well as hard materials, can be removed Remove iron parts from the material flow before the coarsely shredded material is thrown into the fine shredding area of the rotary shears. The fine crushing process is thus relieved of dirt and already sufficiently crushed material; The comparatively more sensitive tools are protected from damage by removing the iron parts beforehand.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel des Gegenstandes der Erfindung näher erläutert ist. Es zeigen:
- Fig. 1
- eine Rotorenschere in schematischer Gesamtansicht mit einem Querschnitt durch die Rotoren im Grobzerkleinerungsbereich;
- Fig. 2
- einen Quersehnitt durch die Rotoren gemäß Fig. 1 im Feinzerkleinerungsbereich; und
- Fig. 3
- die Rotorenschere gemäß Fig. 1, entlang der Linie III-III geschnitten.
- Fig. 1
- a rotor shear in a schematic overall view with a cross section through the rotors in the coarse shredding area;
- Fig. 2
- a cross-section through the rotors according to Figure 1 in the fine grinding area. and
- Fig. 3
- 1, cut along the line III-III.
Die Rotorenschere 1 besteht aus einem Gehäuse 2, das sich über Beine 3 auf dem Fundament 4 abstützt, und einer von oben in das Gehäuse 2 einmündenden Füllmulde 5. Ein von der Seite her in die Füllmulde 5 einschwenkbarer Vorverdichter 6 wird mittels zumindest eines am Scherenrahmen beweglich gelagerten Verstellzylinders 7 beaufschlagt. In der in Fig. 1 mit durchgezogenen linien dargestellten Außerbetriebslage des Vorverdichters 6 bildet seine der Füllmulde zugewandte Stirnwand 8 eine mit der Füllmuldenwand 9 bündig abschließende Fläche. Beim Einschwenken des Vorverdichters 6 in die Füllmulde 5, wie strichpunktiert dargestellt (vgl. die Ziffer 6'), wirkt die Stirnwand 8 (vgl. die Ziffer 8') aktiv auf das nicht dargestellte, über die Füllmulde 5 zugeführte Material ein, um den Materialeinzug zwischen zwei im Gehäuse 2 gelagerten Rotoren 11, 12 zu unterstützen.The rotor shear 1 consists of a
Die jeweils mit einem eigenen Antrieb 13, 14 (vgl. Fig. 3) versehenen Rotoren 11, 12 werden derart gegenläufig angetrieben, daß beide im Überschneidungsbereich abwärts drehen. Die Rotoren 11, 12 bestehen jeweils aus auf einer Welle 15, 16 angeordneten, mit Schneidzähnen 17, 18 (vgl. die Fig. 1 und 2) versehenen Rotorscheiben 19, 21. Wie sich aus Fig. 3 ergibt, in der als Einzelheit der Rotor 12 dargestellt ist, sind die Rotoren 11 und 12 auf einer mehr als die Hälfte der gesamten Länge der Rotoren betragenden Teillänge 22 mit Rotorscheiben 19 und auf der Restlänge 23 mit Rotorscheiben 21 bestückt. Die Rotorscheiben 19 sind einerseits breiter und andererseits mit weniger Zähnen 17 versehen als die Rotorscheiben 21, die aufgrund ihrer geringeren Breite und größeren Anzahl Zähne 18 (vgl. die Fig. 1 und 2) über die Füllmulde 5 zugeführtes Material sehr viel feiner zerteilen als die Rotorscheiben 19.The
Die auf der Teillänge 22 angeordneten, breiten Rotorscheiben 19 bilden somit einen Grobzerkleinerungsbereich 24, und die auf der Restlänge 23 der Rotoren 11, 12 angeordneten, schmalen Rotorscheiben 21 bilden einen Feinzerkleinerungsbereich 25 der Rotorenschere 1, in welchem das meist streifenförmige Material aus dem Grobzerkleinerungsbereich quer unterteilt wird. Oberhalb der Rotoren 11, 12 erstreckt sich im Übergang vom Grob- zum Feinzerkleinerungsbereich 24, 25 eine die Füllmulde 5 entsprechend ihrer unterschiedlichen Zerkleinerungsbereiche unterteilende Trennwand 26 (vgl. Fig. 3); sie sorgt dafür, daß sich die über die Füllmulde 5 den getrennten Arbeitsbereichen zugeführten, unterschiedlich großen Materialien nicht vermischen. Eine unter dem Gehäuse 2 am Scherenauslaß 27 angeordnete Schrägrutsche 28 leitet das im Grobzerkleinerungsbereich 24 von den Rotorscheiben 19 mit ihren Zähnen 17 vorzerkleinerte Material auf einen im Abwurfbereich der Schrägrutsche 28 von einem Bandkasten 29 umgebenen Abförderer 31.The
Der Abförderer 31 wirft das aus dem Grobzerkleinerungsbereich 24 antransportierte Material an seinem Kopfende 33 in eine Schrägrutsche 34 ab, die das Material auf einen im Übernahmebereich durch einen Bandkasten 35 geschützten Steigförderer 36 weiterleitet. Sowohl der unterhalb der Rotorenschere 1 angeordnete Abförderer 31 als auch der Steigförderer 36 stützen sich über Pfosten 37 auf dem Fundament 4 ab. Das Kopfende 38 des Steigförderers 36 endet über dem dem Feinzerkleinerungsbereich 25 der Rotoren 11, 12 zugeordneten Zuführabschnitt der Füllmulde 5, so daß das grob vorzerkleinerte, häufig streifenförmige Material 32 in einem kontinuierlichen Durchlauf erneut in die Rotorenschere 1 gelangt, dort dann aber im Feinzerkleinerungsbereich 25 feinzerkleinert wird. Somit läßt sich mit lediglich einer Rotorenschere sowohl eine Grob- als auch eine Feinzerkleinerung von groben, sperrigen Stückgütern in einem ununterbrochener Bearbeitungsablauf erreichen. Dies schließt nicht aus, falls gewünscht, entweder nur eine Grob- oder nur eine Feinzerkleinerung des aufgegebenen Materials durchzuführen oder gleichzeitig parallel getrennt fein- und grobzerkleinernd zu arbeiten; es bedarf lediglich einer entsprechenden An- und Zuordnung der benötigten Förderer.The
Claims (8)
- Rotor shears for comminution of refuse, in particular of metallic and non-metallic waste material, having two meshing rotors, driven in counter-rotation, comprising rotor discs provided with cutters, characterised in that in order to form a coarse and a fine comminution region (24; 25) each rotor (11, 12) consists of coarse comminution, broader rotor discs (19) and of fine comminution, narrower rotor discs (21), and that there is a charging hopper (5) and also a partition wall (26) above the rotors (11, 12) in the transition from the coarse to the fine comminution regions (24; 25).
- Rotor shears according to claim 1, characterised in that the coarse comminution rotor discs (19) are about twice as wide as the fine comminution rotor discs (21).
- Rotor shears according to claim 1 or claim 2, characterised in that the fine comminution rotor discs (21) have more cutting teeth (18) than the coarse comminution rotor discs (19).
- Rotor shears according to one or more of claims 1 to 3, characterised in that the coarse comminution region (24) of the rotors (11, 12) is larger than the fine comminution region (25), preferably in the ratio 3 : 2.
- Rotor shears according to one or more of claims 1 to 4, characterised in that a discharge conveyor (31) associated with the coarse comminution region (24) is in connection with a rising conveyor (36) associated with the fine comminution region (25) and terminating above the charging hopper (5).
- Rotor shears according to claim 5, characterised in that a sieving stage is connected in series before the rising conveyor (36).
- Rotor shears according to claim 5 or claim 6, characterised in that a suction stage is connected in series before the rising conveyor (36).
- Rotor shears according to one or more of claims 5 to 7, characterised in that a magnetic separator is located before the rising conveyor (36).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4037297A DE4037297A1 (en) | 1990-11-23 | 1990-11-23 | ROTOR SHEARS FOR GRINDING WASTE |
| DE4037297 | 1990-11-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0486872A2 EP0486872A2 (en) | 1992-05-27 |
| EP0486872A3 EP0486872A3 (en) | 1992-06-10 |
| EP0486872B1 true EP0486872B1 (en) | 1994-09-14 |
Family
ID=6418796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91118869A Expired - Lifetime EP0486872B1 (en) | 1990-11-23 | 1991-11-06 | Rotary shredding machine for the reduction of waste material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0486872B1 (en) |
| AT (1) | ATE111378T1 (en) |
| DE (2) | DE4037297A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4306781A1 (en) * | 1993-03-04 | 1994-09-08 | Kloeckner Humboldt Deutz Ag | Process and installation for the treatment of mixed refuse with a high plastics content |
| US5921372A (en) * | 1997-05-02 | 1999-07-13 | Environmental Products Corporation | Multiple chambered container compaction assembly with diverter |
| DE19803325A1 (en) * | 1998-01-29 | 1999-09-02 | Wertmetall Ges Fuer Wertstoffa | Removing snarl-forming objects from a material stream |
| DE102008047319A1 (en) * | 2008-09-11 | 2010-04-15 | Hermann Schwelling | Device for compressing empty, deformable containers |
| DE102009008448A1 (en) * | 2009-02-11 | 2010-09-02 | Pallmann Maschinenfabrik Gmbh & Co. Kg | Apparatus for comminuting feed with stripping elements |
| CN108668648A (en) * | 2016-08-04 | 2018-10-19 | 苏州灵垦农业科技有限公司 | A kind of efficient straw crusher |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE539988A (en) * | 1954-07-21 | |||
| US4098464A (en) * | 1974-10-18 | 1978-07-04 | Krauss-Maffei Aktiengesellschaft | Method of treating refuse for reclamation of valuable components thereof |
| US4932596A (en) * | 1988-12-23 | 1990-06-12 | Triple/S Dynamics Inc. | Comminuting apparatus and method of making same |
-
1990
- 1990-11-23 DE DE4037297A patent/DE4037297A1/en not_active Withdrawn
-
1991
- 1991-11-06 DE DE59102931T patent/DE59102931D1/en not_active Expired - Fee Related
- 1991-11-06 EP EP91118869A patent/EP0486872B1/en not_active Expired - Lifetime
- 1991-11-06 AT AT91118869T patent/ATE111378T1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE59102931D1 (en) | 1994-10-20 |
| DE4037297A1 (en) | 1992-05-27 |
| EP0486872A2 (en) | 1992-05-27 |
| EP0486872A3 (en) | 1992-06-10 |
| ATE111378T1 (en) | 1994-09-15 |
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