EP0403694B1 - Continuous crusher - Google Patents
Continuous crusher Download PDFInfo
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- EP0403694B1 EP0403694B1 EP89120969A EP89120969A EP0403694B1 EP 0403694 B1 EP0403694 B1 EP 0403694B1 EP 89120969 A EP89120969 A EP 89120969A EP 89120969 A EP89120969 A EP 89120969A EP 0403694 B1 EP0403694 B1 EP 0403694B1
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- Prior art keywords
- polygon
- disks
- beating
- crusher
- roller
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
Definitions
- the invention relates to a continuous crusher according to the preamble of claim 1.
- Continuous crushers according to the invention differ from so-called intake crushers, among others. through the arrangement and design of their abutment. Since inlet crushers are arranged above a conveyor trough and use their own crushing bar, they require a certain passage height above which the material to be crushed is conveyed downwards. Continuous crushers, on the other hand, use the stationary construction of a conveyor as a crushing abutment and therefore do not consume any head. They are therefore particularly suitable for underground operations, the underground rooms of which are usually low in height. The known flow crusher of this type are therefore mainly used for comminuting the material to be conveyed, which consists of a mixture of coals and mountains.
- the impact roller which forms the movable crushing element of the flow crusher according to the invention, rotates in the conveying direction of the conveyor which forms the crushing abutment with its channel. This distinguishes the flow crusher according to the invention from other flow crusher whose beater roller opposes that Direction of conveyance circulates. In the case of the latter continuous crushers, this results in a different crushing effect.
- the impact roller rotating against the conveying direction allows the impact tools to dip into the material to be crushed, which dig out the oversize grain in the crushing gap and fling it upwards, which then impacts a stationary crushing bar and is thereby broken.
- the oversize is broken up and split by one or more of the rapidly rotating impact tools and is not crushed between the crushing tools and the conveyor trough or hurled onto the conveyor trough. Only after the oversize has been crushed is the crushed material thrown into the space behind the beater roller and transported on by the conveyor.
- This mode of operation which supports the conveyance, is advantageous, but presupposes that the striking tools have sufficient impact energy.
- the invention is based on a previously known flow crusher (DE-PS 2 554 111). Its peculiarity is that the crushing roller builds a compact unit from welded fillet welded or cast together, alternating and congruent circular plates and hub-shaped discs, and also rotatably is connected to the drive shaft on both sides. As a result, the impact roller and the shaft are protected and an energy-consuming, unsteady rotation of the roller is avoided, so that high breaking performance is achieved.
- the holders of the striking tools which are thereby immovably fixed on the disks, are arranged on striking arms which are formed in one piece and in pairs on each disk.
- the discs therefore form hubs, from which the striking arms project radially like spokes.
- the two striking arms of each disc are offset from each other by a semicircle.
- the number of discs is even and the disc offset is offset by a quarter circle. This causes the impact roller to be balanced, which is a prerequisite for high speeds.
- Such a continuous crusher can have two rollers arranged one behind the other and has a throughput of approx. 350 t / h in the case of material to be conveyed consisting of coal and accompanying rock, the impact roller rotating at approx. 350 rpm.
- the crushed material to be crushed has an upper limit of approx. 250 to 300 mm.
- the crushed material has a size of approx. 800 x 600 x 1500 mm.
- mountains are to be conveyed hydraulically, because the crushed material has to be broken down to maximum grain sizes of 80 to 120 mm. If such mountains consist of hard rock, such as sand shale or sandstone, they can also be crushed only with difficulty, because when they strike a striking tool they are not thrown out into the crushing gap, but in the opposite direction and then represent a considerable danger to the environment of the flow crusher.
- a device for comminuting material or material breaker in which the disks have a polygonal edge on which a plurality of striking tools are arranged in a star shape. Each impact tool is assigned a polygon side and the holders are attached to the polygon sides. Furthermore, the edge of the circular plates arranged between the disks is arranged within the polygon arranged by the polygonal lines of the disks. From US-A-4 311 284 it is also known that the disc edges represent a hexagonal polygon and the discs are arranged offset from one another.
- the invention has for its object to provide a continuous crusher of the type described, which breaks down a crushed material, in particular from mountains, to smaller grain sizes and works as intended as described.
- the number of crushing tools, which are fastened on a disk with holders has increased considerably, so that there is a multiplication of the striking tools over the entire crushing roller. It is also compared to the previously known Hubs achieved by the omission of the crushing arms significantly enlarged disc diameter, so that each time a crushing tool strikes an oversize of the crushed material, the braking that occurs is compensated. Contrary to the expectation that a crushing roller designed in this way, especially if it only has to crush mountains and also hard mountains, for example from sand slate, will throw the oversize out of the crushing gap, the opposite is the case. Rather, the crushing roller runs smoothly and throws the broken oversize into the space behind the beater roller.
- the enlargement of the circular plates in diameter to a diameter that is larger than the polygon of the disc edges in turn increases the mass of the beater roller and makes it insensitive to the multiplication of the braking processes that occur when breaking and splitting the oversize particles. It also prevents the occurrence of oversize particles in the crushed material behind the beater roller, so that the continuous crusher according to the invention delivers an evenly broken down product.
- the invention has the advantage that it breaks down coarse crushed material in one pass to substantially smaller grain sizes, for example to the required 80 to 120 mm, with smooth running of the beater roller being guaranteed, which protects the beater roller and its shaft.
- the Impact roller can therefore be driven via V-belts without excessive slippage in the drive.
- V-belt drives are particularly useful in flow breakers in order to be able to elastically transmit the required drive energies. In fact, it has been found that the throughputs can be increased to approximately 2000 t / h under comparable conditions with the flow crushers according to the invention.
- the shaft (1) shown in Fig. 1 can accommodate on each of its twisted ends (2, 3) a non-rotatable drive pulley for a belt drive, which transmits the energy of a drive, not shown, to the shaft (1).
- the drive sits stationary on a conveyor trough, not shown, which serves as an abutment.
- the beater roller (4) rotates in the conveying direction of the conveyor to which the conveyor trough belongs. It is composed of three circular plates (5, 6 and 7) and four disks (8-11).
- the expression compound in the present context means various positive or non-positive connections, for. B. that the circular plates (5-7) and the congruent discs (8-11) are welded together at their edges by fillet welds, which was assumed in the embodiment according to FIGS. 1 and 2, or that the congruent circular plates (5th -7) and the congruent disks (8-11) form a cast body which has the shape shown in FIGS. 1 and 2, but is formed in one piece.
- the crushing roller has a disc (12 or 13) on both ends, the diameter of which is larger than that of the congruent circular plates (5-7).
- These outer disks (12, 13) are congruent and provided with a recess (14) on the outside.
- a flange (15) is countersunk in the recess, through which the screws (16), which are arranged on a pitch circle, penetrate and on which the screws are supported with their heads.
- the screws (16) serve to fasten the disks (12 and 13) with the arrangement of the congruent circular plates (5-7) and the congruent disks (8-11), as well as with an annular flange (17) on each side of the shaft ( 1) to brace.
- the shaft is also wedged with the beater roller (4), as shown at (18). This guarantees an absolutely rotationally fixed connection of the beater roller (4) to the shaft (1).
- the disk (8) shown in view in Fig. 2 is provided with holders (19-24) which are integrally connected to the disk body (8). This has a circular recess (25) in the middle for the shaft (1).
- Each holder carries a striking tool (26), only the striking tool (26) mounted in the holder (24) being shown for reasons of clarity in FIG. 2.
- the striking tool has a forward, ie in the circumferential direction convexly curved nose (27) and a shaft (28). It is welded with a back to a pin (29) which has a threaded end (30).
- a clamping nut (31) fixes the pin (29) in a bore or cylindrical recess (33) in the holder (24) via one or more spring springs or spring washers (32).
- the disc (8) has a polygonal edge (34).
- the polygon thus formed has six sides (35-40), which corresponds to the number of six holders (24) and six striking tools (26). Since the holders (24) are each assigned to a polygon side (35-40), the striking tools (26) are arranged in a star shape.
- Fig. 1 shows a total of four disks (8-11), which are congruent.
- adjacent disks as shown in the example of disks (8 and 9), are each offset by 30 degrees in the same direction. The offset is always in one direction. As a result, the beater roller is balanced overall. It also means that each striking tool (26) acts separately on the oversize in the crushed material.
- the circular plates (5-7) arranged between the disks (8-11) are so in diameter dimensioned so that their marginal edges (41) lie within the polygon circumscribed by the sides (35-40) of the polygon.
- each polygon side (35-40) are provided with a right-angled, two-sided recess (44) in which the breaking tool (26) is supported with the rear of its part (28).
- the crushing roller (4) rotates in the direction of the curved arrow (45), while the conveyor which defines the crushing gap conveys in the direction of the straight arrow (46). This ensures that the broken oversize grain is thrown into the space behind the impact roller (4).
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Abstract
Description
Die Erfindung betrifft einen Durchlaufbrecher gemäß dem Oberbegriff des Anspruches 1.The invention relates to a continuous crusher according to the preamble of
Erfindungsgemäße Durchlaufbrecher unterscheiden sich von sogenannten Einlaufbrechern u.a. durch die Anordnung und Ausbildung ihres Widerlagers. Da Einlaufbrecher oberhalb einer Förderrinne angeordnet sind und einen eigenen Brechbalken benutzen, verlangen sie eine bestimmte Durchgangshöhe, über die das Brechgut nach unten gefördert wird. Durchlaufbrecher benutzen dagegen als Brechwiderlager die stationäre Konstruktion eines Förderers und verbrauchen daher keine Fallhöhe. Sie eignen sich daher besonders für den Untertagebetrieb, dessen unterirdische Räume meistens eine geringe Höhe aufweisen. Die bekannten Durchlaufbrecher dieser Art werden daher überwiegend zur Zerkleinerung des Fördergutes verwendet, das aus einer Mischung von Kohlen und Bergen besteht.Continuous crushers according to the invention differ from so-called intake crushers, among others. through the arrangement and design of their abutment. Since inlet crushers are arranged above a conveyor trough and use their own crushing bar, they require a certain passage height above which the material to be crushed is conveyed downwards. Continuous crushers, on the other hand, use the stationary construction of a conveyor as a crushing abutment and therefore do not consume any head. They are therefore particularly suitable for underground operations, the underground rooms of which are usually low in height. The known flow crusher of this type are therefore mainly used for comminuting the material to be conveyed, which consists of a mixture of coals and mountains.
Die Schlagwalze, welche das bewegliche Brechorgan des erfindungsgemäßen Durchlaufbrechers bildet, läuft in Förderrichtung des mit seiner Rinne das Brechwiderlager bildenden Förderers um. Darin unterscheidet sich der erfindungsgemäße Durchlaufbrecher von anderen Durchlaufbrechern, deren Schlagwalze entgegen der Förderrichtung umlauft. Bei den letztgenannten Durchlaufbrechern ergibt sich daraus eine abweichende Zerkleinerungswirkung. Die gegen die Förderrichtung umlaufende Schlagwalze läßt die Schlagwerkzeuge in das Brechgut eintauchen, die aus diesem das Überkorn im Brechspalt herausgraben und nach oben schleudern, das dann auf einen stationären Brechbalken prallt und dabei zerbrochen wird.The impact roller, which forms the movable crushing element of the flow crusher according to the invention, rotates in the conveying direction of the conveyor which forms the crushing abutment with its channel. This distinguishes the flow crusher according to the invention from other flow crusher whose beater roller opposes that Direction of conveyance circulates. In the case of the latter continuous crushers, this results in a different crushing effect. The impact roller rotating against the conveying direction allows the impact tools to dip into the material to be crushed, which dig out the oversize grain in the crushing gap and fling it upwards, which then impacts a stationary crushing bar and is thereby broken.
Dagegen wird bei dem erfindungsgemäßen Durchlaufbrecher das Überkorn von einem oder mehreren der schnell umlaufenden Schlagwerkzeuge aufgeschlagen und gespalten und nicht zwischen den Brechwerkzeugen und der Förderrinne zerdrückt bzw. auf die Förderrinne geschleudert. Erst nach der Zerkleinerung des Überkorns wird das Brechgut in den hinter der Schlagwalze liegenden Raum geschleudert und von dem Förderer weitertransportiert. Diese Betriebsart, die die Förderung unterstützt, ist vorteilhaft, setzt allerdings voraus, daß die Schlagwerkzeuge genügend Schlagenergie aufbringen.In contrast, in the continuous crusher according to the invention, the oversize is broken up and split by one or more of the rapidly rotating impact tools and is not crushed between the crushing tools and the conveyor trough or hurled onto the conveyor trough. Only after the oversize has been crushed is the crushed material thrown into the space behind the beater roller and transported on by the conveyor. This mode of operation, which supports the conveyance, is advantageous, but presupposes that the striking tools have sufficient impact energy.
Die Erfindung geht von einem vorbekannten Durchlaufbrecher aus (DE-PS 2 554 111). Dessen Besonderheit besteht darin, daß die Brechwalze eine kompakte Einheit aus miteinander durch Schweißkehlnähte verbundenen oder gegossen, abwechselnden und deckungsgleichen Kreisplatten und nabenförmigen Scheiben aufgebaut, sowie außerdem drehfest auf beiden Seiten mit der Antriebswelle verbunden ist. Hierdurch werden die Schlagwalze und die Welle geschont, sowie ein energieverzehrender, unruhiger Umlauf der Walze vermieden, so daß hohe Brechleistungen erzielt werden.The invention is based on a previously known flow crusher (DE-PS 2 554 111). Its peculiarity is that the crushing roller builds a compact unit from welded fillet welded or cast together, alternating and congruent circular plates and hub-shaped discs, and also rotatably is connected to the drive shaft on both sides. As a result, the impact roller and the shaft are protected and an energy-consuming, unsteady rotation of the roller is avoided, so that high breaking performance is achieved.
Bei dem vorbekannten Durchlaufbrecher sind jedoch die Halter der Schlagwerkzeuge, welche dadurch unbeweglich auf den Scheiben festgelegt sind, auf Schlagarmen angeordnet, welche einstückig und paarweise an jeder Scheibe ausgebildet sind. Die Scheiben bilden daher Naben, von denen die Schlagarme wie Speichen radial vorstehen. Die beiden Schlagarme jeder Scheiben sind um einen Halbkreis gegeneinander versetzt. Die Scheibenanzahl ist geradzahlig und der Scheibenversatz jeweils um einen Viertelkreis versetzt. Das bewirkt die Auswuchtung der Schlagwalze, die für hohe Drehzahlen Voraussetzung ist.In the known continuous crusher, however, the holders of the striking tools, which are thereby immovably fixed on the disks, are arranged on striking arms which are formed in one piece and in pairs on each disk. The discs therefore form hubs, from which the striking arms project radially like spokes. The two striking arms of each disc are offset from each other by a semicircle. The number of discs is even and the disc offset is offset by a quarter circle. This causes the impact roller to be balanced, which is a prerequisite for high speeds.
Ein solcher Durchlaufbrecher kann zwei hintereinander angeordnete Walzen aufweisen und hat bei einem aus Kohle und begleitendem Gestein bestehenden Fördergut eine Durchsatzleistung von ca. 350 t/h, wobei die Schlagwalze mit ca. 350 U/min umläuft. Das zerkleinerte Brechgut hat ein oberes Grenzkorn von ca. 250 bis 300 mm. Dabei hat das Brechgut eine Stückgröße von ca. 800 x 600 x 1500 mm.Such a continuous crusher can have two rollers arranged one behind the other and has a throughput of approx. 350 t / h in the case of material to be conveyed consisting of coal and accompanying rock, the impact roller rotating at approx. 350 rpm. The crushed material to be crushed has an upper limit of approx. 250 to 300 mm. The crushed material has a size of approx. 800 x 600 x 1500 mm.
Diese Werte reichen jedoch häufig nicht aus. Das ist u.a. der Fall, wenn Berge hydraulisch gefördert werden sollen, weil hierfür das Brechgut auf maximale Korngrössen von 80 bis 120 mm heruntergebrochen werden muß. Wenn derartige Berge aus hartem Gestein, etwa aus Sandschiefer oder Sandstein bestehen, können sie außerdem nur schwer zerkleinert werden, weil sie beim Auftreffen eines Schlagwerkzeuges nicht in den Brechspalt, sondern in Gegenrichtung herausgeschleudert werden und dann eine erhebliche Gefahr für die Umgebung des Durchlaufbrechers darstellen.However, these values are often not sufficient. Among other things, this is the case when mountains are to be conveyed hydraulically, because the crushed material has to be broken down to maximum grain sizes of 80 to 120 mm. If such mountains consist of hard rock, such as sand shale or sandstone, they can also be crushed only with difficulty, because when they strike a striking tool they are not thrown out into the crushing gap, but in the opposite direction and then represent a considerable danger to the environment of the flow crusher.
Aus der US-A-4 311 284 und der GB-A-2 116 875 ist jeweils eine Einrichtung zum Zerkleinern von Material bzw. Materialbrecher bekannt, bei dem die Scheiben einen polygonalen Rand aufweisen, auf dem eine Vielzahl von Schlagwerkzeugen sternförmig angeordnet ist. Hierbei ist jedem Schlagwerkzeug eine Polygonseite zugeordnet und die Halter sind auf den Polygonseiten angebracht. Des weiteren ist die Randkante der zwischen den Scheiben angeordneten Kreisplatten innerhalb des von den Polygonzügen der Scheiben angeordneten Vielecks angeordnet. Aus der US-A-4 311 284 ist es darüberhinaus bekannt, daß die Scheibenränder einen sechseckigen Polygonzug darstellen und die Scheiben gegeneinander versetzt angeordnet sind.From US-A-4 311 284 and GB-A-2 116 875 a device for comminuting material or material breaker is known, in which the disks have a polygonal edge on which a plurality of striking tools are arranged in a star shape. Each impact tool is assigned a polygon side and the holders are attached to the polygon sides. Furthermore, the edge of the circular plates arranged between the disks is arranged within the polygon arranged by the polygonal lines of the disks. From US-A-4 311 284 it is also known that the disc edges represent a hexagonal polygon and the discs are arranged offset from one another.
Der Erfindung liegt die Aufgabe zugrunde, einen Durchlaufbrecher der beschriebenen Art zu schaffen, welcher ein insbesondere aus Bergen bestehendes Brechgut auf geringere Korngrößen herunterbricht und dabei bestimmungsgemäß wie geschildert arbeitet.The invention has for its object to provide a continuous crusher of the type described, which breaks down a crushed material, in particular from mountains, to smaller grain sizes and works as intended as described.
Diese Aufgabe wird erfindungsgemäß mit den Kennzeichnenden Merkmalen des Anspruches 1 gelöst. Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche.This object is achieved with the characterizing features of
Gemäß der Erfindung ist die Anzahl der Brechwerkzeuge wesentlich vermehrt, die auf einer Scheibe mit Haltern befestigt sind, so daß sich eine Vervielfachung der Schlagwerkzeuge über die ganze Brechwalze gesehen ergibt. Außerdem wird durch die gegenüber den vorbekannten Naben durch den Wegfall der Brecharme wesentlich vergrößerten Scheibendurchmesser erreicht, so daß bei jedem Auftreffen eines Brechwerkzeuges auf ein Überkorn des Brechgutes die dabei auftretende Abbremsung ausgeglichen wird. Entgegen der Erwartung, daß eine derart gestaltete Brechwalze, insbesondere dann, wenn sie nur Berge und auch noch harte Berge z.B. aus Sandschiefer zerkleinern muß, das Überkorn aus dem Brechspalt herausschleudert, ergibt sich das Gegenteil. Die Brechwalze läuft vielmehr in ruhigem Lauf um und schleudert das zerbrochene Überkorn in den Raum hinter der Schlagwalze. Die Vergrößerung der Kreisplatten im Durchmesser auf Durchmesser, der größer als das Vieleck der Scheibenränder ist, vergrößert ihrerseits die Masse der Schlagwalze und macht diese unempfindlich gegen die Vervielfachung der auftretenden Abbremsvorgänge beim Zerbrechen und Spalten des Überkorn. Sie verhindert außerdem das Auftreten von Überkorn im Brechgut hinter der Schlagwalze, so daß der erfindungsgemäße Durchlaufbrecher ein gleichmäßig heruntergebrochenes Gut liefert.According to the invention, the number of crushing tools, which are fastened on a disk with holders, has increased considerably, so that there is a multiplication of the striking tools over the entire crushing roller. It is also compared to the previously known Hubs achieved by the omission of the crushing arms significantly enlarged disc diameter, so that each time a crushing tool strikes an oversize of the crushed material, the braking that occurs is compensated. Contrary to the expectation that a crushing roller designed in this way, especially if it only has to crush mountains and also hard mountains, for example from sand slate, will throw the oversize out of the crushing gap, the opposite is the case. Rather, the crushing roller runs smoothly and throws the broken oversize into the space behind the beater roller. The enlargement of the circular plates in diameter to a diameter that is larger than the polygon of the disc edges in turn increases the mass of the beater roller and makes it insensitive to the multiplication of the braking processes that occur when breaking and splitting the oversize particles. It also prevents the occurrence of oversize particles in the crushed material behind the beater roller, so that the continuous crusher according to the invention delivers an evenly broken down product.
Die Erfindung hat den Vorteil, daß sie grobes Brechgut in einem Durchlauf auf wesentlich geringere Korngrößen z.B. auf die geforderten 80 bis 120 mm herunterbricht, wobei ein ruhiger Lauf der Schlagwalze gewährleistet ist, der die Schlagwalze und ihre Welle schont. Die Schlagwalze kann daher auch über Keilriemen angetrieben werden, ohne daß ein übermäßiger Schlupf im Antrieb auftritt. Keilriemenantriebe sind bei Durchlaufbrechern besonders zweckmäßig, um die geforderten Antriebsenergien elastisch übertragen zu können. Tatsächlich hat sich herausgestellt, daß mit den erfindungsgemäßen Durchlaufbrechern unter vergleichbaren Bedingungen die Durchsatzleistungen auf ca. 2000 t/h gesteigert werden können.The invention has the advantage that it breaks down coarse crushed material in one pass to substantially smaller grain sizes, for example to the required 80 to 120 mm, with smooth running of the beater roller being guaranteed, which protects the beater roller and its shaft. The Impact roller can therefore be driven via V-belts without excessive slippage in the drive. V-belt drives are particularly useful in flow breakers in order to be able to elastically transmit the required drive energies. In fact, it has been found that the throughputs can be increased to approximately 2000 t / h under comparable conditions with the flow crushers according to the invention.
Zweckmäßig ist ferner die Verwirklichung der Merkmale des Anspruches 2, weil hierdurch ein fester Sitz der Schlagwerkzeuge auf dem Scheibenrand gewährleistet wird.It is also useful to achieve the features of
Die Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer Ausführungsform anhand der Figuren in der Zeichnung; es zeigen
- Fig. 1
- eine teilweise im Längsschnitt gehaltene Ansicht der Schlagwalze gemäß der Erfindung und ihrer Antriebswelle unter Weglassung der übrigen Teile des Durchlaufbrechers,
- Fig. 2
- eine Ansicht einer der Scheiben, die zu mehreren die Schlagwalze bilden und
- Fig. 3
- in der Fig. 2 entsprechender Darstellung den Scheibenversatz.
- Fig. 1
- FIG. 2 shows a view, partly in longitudinal section, of the impact roller according to the invention and its drive shaft, omitting the other parts of the flow breaker,
- Fig. 2
- a view of one of the discs that form the beater roller and several
- Fig. 3
- 2 corresponding representation of the disc offset.
Die in Fig. 1 dargestellte Welle (1) kann auf jedem ihrer abgedrehten Enden (2, 3) eine drehfeste Antriebsscheibe für einen Riementrieb aufnehmen, welche die Energie eines nicht dargestellten Antriebes auf die Welle (1) überträgt. Der Antrieb sitzt stationär auf einer nicht dargestellten Förderrinne, welche als Brechwiderlager dient. In Förderrichtung des Förderers, zu dem die Förderrinne gehört, läuft die Schlagwalze (4) um. Sie ist aus drei Kreisplatten (5, 6 und 7), sowie aus vier Scheiben (8-11) zusammengesetzt. Der Ausdruck zusammengesetzt bedeutet im vorliegenden Zusammenhang verschiedene form- oder kraftschlüssige Verbindungen, z. B., daß die Kreisplatten (5-7) und die kongruenten Scheiben (8-11) an ihren Rändern durch Kehlnähte miteinander verschweißt sind, was im Ausführungsbeispiel nach den Fig. 1 und 2 angenommen worden ist, oder daß die deckungsgleichen Kreisplatten (5-7) und die kongruenten Scheiben (8-11) einen Gußkörper bilden, der die aus den Fig. 1 und 2 ersichtliche Form aufweist, jedoch einteilig ausgebildet ist.The shaft (1) shown in Fig. 1 can accommodate on each of its twisted ends (2, 3) a non-rotatable drive pulley for a belt drive, which transmits the energy of a drive, not shown, to the shaft (1). The drive sits stationary on a conveyor trough, not shown, which serves as an abutment. The beater roller (4) rotates in the conveying direction of the conveyor to which the conveyor trough belongs. It is composed of three circular plates (5, 6 and 7) and four disks (8-11). The expression compound in the present context means various positive or non-positive connections, for. B. that the circular plates (5-7) and the congruent discs (8-11) are welded together at their edges by fillet welds, which was assumed in the embodiment according to FIGS. 1 and 2, or that the congruent circular plates (5th -7) and the congruent disks (8-11) form a cast body which has the shape shown in FIGS. 1 and 2, but is formed in one piece.
Die Brechwalze weist außen an beiden Enden je eine Scheibe (12 bzw. 13) auf, die im Durchmesser gegenüber den deckungsgleichen Kreisplatten (5-7) vergrößert ist. Diese Außenscheiben (12, 13) sind ihrerseits deckungsgleich und außen mit einer Aussparung (14) versehen. In der Aussparung ist ein Flansch (15) versenkt, den Schrauben (16), welche auf einem Teilkreis angeordnet sind, durchdringen und auf dem sich die Schrauben mit ihren Köpfen abstützen. Die Schrauben (16) dienen dazu, die Scheiben (12 und 13) mit der Anordnung aus den deckungsgleichen Kreisplatten (5-7) und den kongruenten Scheiben (8-11), sowie mit einem Ringflansch (17) auf jeder Seite der Welle (1) zu verspannen. Im Inneren der außenliegenden Kreisplatten und Scheiben ist die Welle außerdem mit der Schlagwalze (4), wie bei (18) dargestellt, verkeilt. Demzufolge ist eine absolut drehfeste Verbindung der Schlagwalze (4) mit der Welle (1) gewährleistet.The crushing roller has a disc (12 or 13) on both ends, the diameter of which is larger than that of the congruent circular plates (5-7). These outer disks (12, 13) are congruent and provided with a recess (14) on the outside. A flange (15) is countersunk in the recess, through which the screws (16), which are arranged on a pitch circle, penetrate and on which the screws are supported with their heads. The screws (16) serve to fasten the disks (12 and 13) with the arrangement of the congruent circular plates (5-7) and the congruent disks (8-11), as well as with an annular flange (17) on each side of the shaft ( 1) to brace. In the interior of the outer circular plates and disks, the shaft is also wedged with the beater roller (4), as shown at (18). This guarantees an absolutely rotationally fixed connection of the beater roller (4) to the shaft (1).
Die in Ansicht in Fig. 2 wiedergegebene Scheibe (8) ist mit Haltern (19-24) versehen, welche einstückig mit dem Scheibenkörper (8) verbunden sind. Dieser weist in der Mitte eine kreisförmige Aussparung (25) für die Welle (1) auf. Jeder Halter trägt ein Schlagwerkzeug (26), wobei aus Gründen der Übersicht in Fig. 2 nur das in dem Halter (24) gelagerte Schlagwerkzeug (26) wiedergegeben ist. Das Schlagwerkzeug hat eine nach vorn, d.h. in Umlaufrichtung konvex gewölbte Schlagnase (27) und einen Schaft (28). Es ist mit einer Rückseite an einen Zapfen (29) angeschweißt, der ein mit Gewinde versehenes Ende (30) aufweist. Eine Spannmutter (31) legt über einen oder mehrere Fellerfedern oder Federringe (32) den Zapfen (29) in einer Bohrung bzw. zylindrischen Aussparung (33) im Halter (24) fest.The disk (8) shown in view in Fig. 2 is provided with holders (19-24) which are integrally connected to the disk body (8). This has a circular recess (25) in the middle for the shaft (1). Each holder carries a striking tool (26), only the striking tool (26) mounted in the holder (24) being shown for reasons of clarity in FIG. 2. The striking tool has a forward, ie in the circumferential direction convexly curved nose (27) and a shaft (28). It is welded with a back to a pin (29) which has a threaded end (30). A clamping nut (31) fixes the pin (29) in a bore or cylindrical recess (33) in the holder (24) via one or more spring springs or spring washers (32).
Die Scheibe (8) weist einen polygonalen Rand (34) auf. Das dadurch gebildete Vieleck besitzt sechs Seiten (35-40), dem die Anzahl von sechs Haltern (24) und sechs Schlagwerkzeugen (26) entspricht. Da die Halter (24) jeweils einer Polygonseite (35-40) zugeordnet sind, ergibt sich eine sternförmige Anordnung der Schlagwerkzeuge (26).The disc (8) has a polygonal edge (34). The polygon thus formed has six sides (35-40), which corresponds to the number of six holders (24) and six striking tools (26). Since the holders (24) are each assigned to a polygon side (35-40), the striking tools (26) are arranged in a star shape.
Fig. 1 zeigt insgesamt vier Scheiben (8-11), welche kongruent ausgebildet sind. Nach Fig. 3 sind benachbarte Scheiben, wie am Beispiel der Scheiben (8 und 9) gezeigt jeweils in der gleichen Richtung um 30 Grad gegeneinander versetzt angeordnet. Der Versatz erfolgt dabei stets in einer Richtung. Das hat zur Folge, daß die Schlagwalze insgesamt ausgewuchtet ist. Es führt ferner dazu, daß jedes Schlagwerkzeug (26) für sich auf das Überkorn im Brechgut einwirkt. Die zwischen den Scheiben (8-11) angeordneten Kreisplatten (5-7) sind im Durchmesser so bemessen, daß ihre Randkanten (41) innerhalb des von den Seiten (35-40) des Polygonzuges umschriebenen Vielecks liegen.Fig. 1 shows a total of four disks (8-11), which are congruent. According to FIG. 3, adjacent disks, as shown in the example of disks (8 and 9), are each offset by 30 degrees in the same direction. The offset is always in one direction. As a result, the beater roller is balanced overall. It also means that each striking tool (26) acts separately on the oversize in the crushed material. The circular plates (5-7) arranged between the disks (8-11) are so in diameter dimensioned so that their marginal edges (41) lie within the polygon circumscribed by the sides (35-40) of the polygon.
Zur Abstützung der Schlagwerkzeuge (26) sind die Scheibenränder an jeder Polygonseite (35-40) mit einer rechtwinkligen, zweiseitigen Aussparung (44) versehen, in der sich das Brechwerkzeug (26) mit der Rückseite seines Teiles (28) abstützt.To support the striking tools (26), the disc edges on each polygon side (35-40) are provided with a right-angled, two-sided recess (44) in which the breaking tool (26) is supported with the rear of its part (28).
Die Brechwalze (4) läuft in Richtung des gekrümmten Pfeiles (45) um, während der in den Brechspalt definierende Förderer in Richtung des geraden Pfeils (46) fördert. Hierdurch wird erreicht, daß das zerbrochene Überkorn in den Raum hinter der schlagwalze (4) geschleudert wird.The crushing roller (4) rotates in the direction of the curved arrow (45), while the conveyor which defines the crushing gap conveys in the direction of the straight arrow (46). This ensures that the broken oversize grain is thrown into the space behind the impact roller (4).
Claims (3)
- A pass through crusher for underground operation, in the case of which over a conveyor trough section designed in the form of a crusher abutment a beating roll (3) turning in the direction of conveying rotates at a high speed, which beating roll, on a shaft (1) bearinged a either end thereof, possesses a roll keyed to the shaft (1) at the ends (2 the 4), which latter roll is constituted by mutually connected, alternating, aligned circular plates (5, 6 and 7) and congruent disks (8 through 11), which on their periphery are fitted with equally spaced holders (19 through 24) for beating tools (26), and are so arranged that adjacent disks are respectively arranged with a mutual offset equal to half the arc of the distance between their beating tools, characterized in that the disks (8 through 11) possesses a polygonal periphery (34), on which a plurality of beating tools (26) are arranged in a stellate fashion, one side (35 through 40) of a polygon being associated with each beating tool (26) and the holders are arranged on the polygon sides (35 through 40), and in that the edge periphery (41 through 43) of the circular plates (5 through 7) arranged between the disks (8 through 11) is arranged within the polygon described by the polygon outlines of the disks (8 through 11), the edges (34) of the disks representing a hexagon polygon outline (35 through 40) and the disks being arranged with an offset of 30° in relation to each other in the beating roll (4).
- The pass through crusher as claimed in claim 1, characterized in that the polygon sides (35 through 40) of the disk edge (34) are recessed at their leading end and on the holders (24) for supporting the beating tools (26).
- The pass through crusher as claimed in claim 1 or claim 2, characterized in that each recess (44) has two sides, is rectangular and serves to receive the shank (28) of the beating tool (26).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3920305 | 1989-06-21 | ||
| DE3920305A DE3920305A1 (en) | 1989-06-21 | 1989-06-21 | BREAKTHROWER |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0403694A2 EP0403694A2 (en) | 1990-12-27 |
| EP0403694A3 EP0403694A3 (en) | 1991-06-19 |
| EP0403694B1 true EP0403694B1 (en) | 1994-07-06 |
Family
ID=6383241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89120969A Expired - Lifetime EP0403694B1 (en) | 1989-06-21 | 1989-11-11 | Continuous crusher |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0403694B1 (en) |
| AT (1) | ATE108094T1 (en) |
| DE (2) | DE3920305A1 (en) |
| ES (1) | ES2056178T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4410309C2 (en) * | 1994-03-25 | 2002-02-28 | Westfalia Becorit Ind Tech | Impact Roll Crushers |
| US5984213A (en) * | 1994-04-11 | 1999-11-16 | Mount Isa Mines Limited | Attrition mill |
| JP3800556B2 (en) * | 1994-04-11 | 2006-07-26 | マウント アイザ マインズ リミテッド | Attrition mill and method for selecting particles in slurry |
| AU726809B2 (en) * | 1997-06-23 | 2000-11-23 | Mmd Design & Consultancy Limited | Mineral breaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061210A (en) * | 1961-09-29 | 1962-10-30 | Columbus Mckinnon Corp | Material handling machine |
| GB2116875B (en) * | 1979-02-03 | 1984-03-21 | Mmd Design And Consultance Lim | Mineral breakers |
| US4311284A (en) * | 1980-02-08 | 1982-01-19 | The W. R. Stamler Corporation | Device for fracturing material |
| GB2110954B (en) * | 1981-12-05 | 1984-10-10 | Dresser Europe Sa | Tool-holding mounting ring for crushing machine rotor |
| DE8630905U1 (en) * | 1986-11-18 | 1987-03-12 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Impact tool |
-
1989
- 1989-06-21 DE DE3920305A patent/DE3920305A1/en not_active Withdrawn
- 1989-11-11 AT AT89120969T patent/ATE108094T1/en active
- 1989-11-11 ES ES89120969T patent/ES2056178T3/en not_active Expired - Lifetime
- 1989-11-11 EP EP89120969A patent/EP0403694B1/en not_active Expired - Lifetime
- 1989-11-11 DE DE58908015T patent/DE58908015D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0403694A3 (en) | 1991-06-19 |
| ES2056178T3 (en) | 1994-10-01 |
| EP0403694A2 (en) | 1990-12-27 |
| DE58908015D1 (en) | 1994-08-11 |
| ATE108094T1 (en) | 1994-07-15 |
| DE3920305A1 (en) | 1991-01-03 |
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