EP2218506A2 - Reduction tool and device with such a reduction tool and method for determining the wear level of such a reduction tool - Google Patents
Reduction tool and device with such a reduction tool and method for determining the wear level of such a reduction tool Download PDFInfo
- Publication number
- EP2218506A2 EP2218506A2 EP10001175A EP10001175A EP2218506A2 EP 2218506 A2 EP2218506 A2 EP 2218506A2 EP 10001175 A EP10001175 A EP 10001175A EP 10001175 A EP10001175 A EP 10001175A EP 2218506 A2 EP2218506 A2 EP 2218506A2
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- EP
- European Patent Office
- Prior art keywords
- tool
- rotor
- comminution
- reference surface
- wear
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 title description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 5
- 238000003860 storage Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Images
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
- B02C18/06—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
-
- 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
Definitions
- the invention relates to a comminution tool for a rotor-stator system or rotor-rotor system having crushing device according to the preamble of patent claim 1, such a device according to the preamble of claim 8 and a method for determining the state of wear of a crushing tool with the features of Patent claim 12.
- the field of mechanical process engineering includes, among other things, the conversion of substances into an intermediate or end product and thus also the comminution of substances.
- the category of suitable comminution machines also includes devices with a rotor-stator system or rotor-rotor system. Their rotors are occupied with crushing tools, which are passed in the course of rotation on the tools of a stator or second rotor and crush the feed material in interaction with these. For example, shearing tools, knives, hammers and the like are known as comminution tools.
- the crushing tools are exposed to heavy mechanical stress, which causes depending on the nature of the feed more or less severe wear.
- the geometry of the comminution tools and thus the effectiveness of the comminution change Due to the associated deviations from the optimal starting conditions, the quality of the final product suffers, which deviates in its shape, size and surface condition from the target specifications or is subject to fluctuations falling outside the tolerance range.
- the energy consumption and heat generation increases within the device.
- the object of the invention is to provide a way to permanently determine the wear of shredding tools reliably, easily and accurately.
- the invention is based on the fact that with continued operation of equipped with generic crushing tools devices, the distance between the effective edges of the crushing area and the storage area due to wear increasingly reduced, the crushing tool is thus shorter in this direction. Only wear in this direction, which defines the main wear direction, affects the gap width to the stator or adjacent rotor and thus compromises the quality of comminution.
- the effective edges in the sense of the invention are formed by the points of the comminution area, which define the smallest gap width to the stator, that is to say have the greatest distance to the storage area.
- the basic idea of the invention is to provide the reference surface for a measuring gauge on the tool itself, so that the wear on the rotor and / or stator remains without influence on the measurement result. Instead, the amount of wear results from the distance of the effective edge perpendicular to the reference surface. This distance defines the distance direction, which according to the invention is parallel to the main wear direction.
- a simple advantageous embodiment of the invention is provided for this purpose that at least one peripheral side of the crushing tool formed flat above the reference surface and the reference surface is arranged on this side.
- a circumferential surface of the comminution tool circumferential reference surface is provided or reference surfaces on opposite sides of the comminution tool, which preferably extend over the entire side length.
- the reference surface is formed by a projecting over the outer periphery of the crushing tool projection or approach, which can be achieved by a slimmer shape of the crushing region relative to the storage area.
- the reference surface is located on the side of the comminution tool, which lies in the flow shadow during operation of a comminution device, that is, the rear side of the comminution tool in the rotational direction, and is therefore naturally subjected to less wear.
- the same aim pursues an embodiment of the invention in which the reference surface is flush or even slightly lower compared to the surface of the rotor or the tool holder in the rotor.
- the reference surface in front of a disproportionately strong mechanical stress in the course of crushing the feed protected.
- the Fig. 1a to 2b show a crushing tool 1 in the form of a shearing tool.
- the crushing tool 1 is used for coarse crushing of feed material of all kinds, for example, from waste wood, scrap tires, electronic waste, cable residues and the like.
- the comminution between the stator tools and the comminution tools 1 takes place mainly by means of shearing, tearing and squeezing.
- the associated high forces cause high wear.
- the crushing tool 1 shown has a cuboid base body 2, which embodies the bearing area for clamping in a complementarily shaped, indicated by the reference numeral 27 recording in the rotor.
- the comminution area active in the comminution in the form of a shear strip 3 with wavy, effective edges 4 adjoins the upper side of the main body 2.
- the shear strip 3 has two plane-parallel sides 34, which are offset relative to the base body 2 to the inside.
- the base body 2 protrudes on both sides over the entire longitudinal extension extending projections on the outer periphery of the crushing tool 1, each resulting in the reference surface 5 and plane parallel to the plane defined by the end of the crushing tools 1 level.
- the vertical distance A 0 of the effective edges 4 on the reference surfaces 5 defines the target dimension in unused crushing tools. 1
- the Fig. 2a and b represent the same comminution tool 1 after its use in a comminution device and thus show the state of wear. To illustrate the initial state of this is reproduced with the dotted line 9. It can be seen that the height of the shear strip 3 has become shorter and thus also the position of the effective edge 4 'has changed. Due to the use of the comminuting tool 1 in the reversing operation of the rotor results in a symmetrical cross-section wear pattern. The wear dimension corresponds to the difference between the distance A 0 in the unused state and the distance A 1 in the worn state. The main wear direction is indicated by the arrow 33.
- the determination of the distance A 1 is in the FIGS. 3a and b shown.
- a measuring gauge 6 consisting essentially of a flat planar bar with a stop edge 7 and markings 8 on the side facing the tool 1 34 is applied to the reference surface 5 and the entire surface of the flat side.
- the marks reflect the vertical distance of the effective edge 4 'on the reference surface 5 again.
- the Fig. 4a to 5b show the invention using the example of a crushing tool 10 in the form of a hammer.
- comminution tools 10 serve, for example, for breaking up fibrous material in hammer mills.
- Such an application is for example in the EP 0 019 542 A1 described.
- the cooperating with the crushing tools 10 stator is usually formed in such devices by a cylindrical sieve which surrounds the rotor coaxially while maintaining a working gap.
- the shredding tool 10 is shown in the unconsumed state.
- the comminuting tool 10 has a plate-like shape with a bearing area 11 into which a bore 12 for oscillating suspension of the comminution tool 10 is inserted in a rotor.
- To the outside adjoins the storage area 11 of the comminution area 13, which is active during comminution, and whose two opposite plane-parallel sides 34 end with an effective edge 14. Due to different thicknesses in the transition region creates a one-sided projection of the storage area 11 via the crushing region 13, which leads to the formation of a reference surface 15.
- the vertical distance A 0 of the effective edge 14 on the reference surface 15 defines the distance direction and in turn represents the characteristic of an unused comminution tool 10 target dimension.
- the state of the crushing tool 10 after its use in a crushing device is again in the Fig. 5a and b shown, wherein the dotted line 16 allows a comparison with the initial state.
- the Fig. 5a and b show that the height of the crushing region 13 removed due to wear and thus the position of the effective edge 14 'is moved closer to the storage area 11.
- the existing wear results in turn from the difference of the output distance A 0 and the distance A 1 .
- Fig. 6 makes the process of wear detection clear.
- a plate-shaped gauge 17 is applied with its stop edge 18 to the reference surface 15 and at the same time the entire surface of the flat side surface 34, wherein the attached to the likewise planar sides markings 19 to the tool 10 point.
- the actual vertical distance between the effective edge 14 'and the reference surface 15 can then be determined visually, and thus the extent of wear in the main wear direction 33 can be determined.
- FIG. 7a to 8b Another embodiment of the invention not concluding from the Fig. 7a to 8b showing a crushing tool 20 in the form of a knife.
- a crushing tool 20 is used for chipping or chopping comminution of feed material, for example of wood and is used in Messerwellenzerspanern or cutting mills, such as in the DE 2 360 003 A1 disclosed.
- the stator tools are formed here by counter knives.
- the Fig. 7a and b reflect the unconsumed state of the comminution tool 20.
- the comminution area 23, which is active during comminution terminates at the storage area 21 and ends with an undercut effective edge 24. Different thicknesses of the storage area 21 and comminution area 23 lead to a projection of the storage area 21 in the transition area.
- a reference surface 25 is produced on one of the two plane-parallel side surfaces 34.
- the desired dimension for the position of the effective edge 24 also results here from the vertical distance A 0 of the effective edge 24 on the reference surface 25th
- the Fig. 8a and b give the setting in the course of crushing wear state again. Due to the gradual wear, the height of the crushing portion 23 decreases from the unused initial condition (dotted line 26), resulting in a reduction of the distance A 1 between the effective edge 24 'and the reference surface 25 in the main wear direction 33.
- the determination of the current distance A 1 is analogous to the and the Fig. 1 to 6 described embodiments of Invention, so that what is said there applies.
- the resulting wear is also calculated here by subtracting the distance A 0 and the distance A 1 .
- the reference surface is formed in each case by a projection or shoulder in the side surface of the crushing tool. That the invention is not limited to show the FIGS. 9a to 9c the example of an already under the FIGS. 1 to 3 Shear tool described in the 1.
- FIG. 9a illustrated embodiment of the shearing tool 1 has at least on one side, preferably on two opposite sides, in each case a projection 28, wherein both on the upper side 29 and on the underside 30 of a gauge can be struck;
- the reference surface 5 may therefore be formed by the upper side 29 and / or the lower side 30 of the projection 28.
- a matching gauge can then have a neck 28 complementary shaped longitudinal groove which receives the projection 28 in a form-fitting manner.
- FIG. 9b shows a crushing tool 1, in which the base body 2 is made narrower with respect to the crushing region 3.
- a recess 31 is formed in the side surface of the comminuting tool 1, which forms the reference surface 5 according to the invention.
- a suitable measuring gauge engages behind this recess 31.
- the reference surfaces 5 can also be produced by grooves 32 on the side surfaces of the comminution tools 1.
- the reference surfaces 5 formed by the groove flanks are accessible only to a limited extent from the outside and therefore protected from mechanical stress, as resulting from the rough comminution operation.
- An associated gauge can then have a complementary form-fitting strip, which engages in the groove 32.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Die Erfindung betrifft ein Zerkleinerungswerkzeug für eine ein Rotor-Stator-System oder Rotor-Rotor-System aufweisende Zerkleinerungsvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1, eine solche Vorrichtung gemäß dem Oberbegriff des Patentanspruchs 8 sowie ein Verfahren zur Ermittlung des Verschleißzustands eines Zerkleinerungswerkzeugs mit den Merkmalen des Patentanspruchs 12.The invention relates to a comminution tool for a rotor-stator system or rotor-rotor system having crushing device according to the preamble of
Zum Gebiet der mechanischen Verfahrenstechnik gehört unter anderem die Umwandlung von Stoffen in ein Zwischen- oder Endprodukt und somit auch das Zerkleinern von Stoffen. Unter die Gattung dazu geeigneter Zerkleinerungsmaschinen fallen auch Vorrichtungen mit einem Rotor-Stator-System oder Rotor-Rotor-System. Deren Rotoren sind mit Zerkleinerungswerkzeugen besetzt, die im Zuge der Rotation an den Werkzeugen eines Stators oder zweiten Rotors vorbeigeführt werden und das Aufgabegut im Zusammenspiel mit diesen zerkleinern. Als Zerkleinerungswerkzeuge sind beispielsweise Scherwerkzeuge, Messer, Hämmer und dergleichen bekannt.The field of mechanical process engineering includes, among other things, the conversion of substances into an intermediate or end product and thus also the comminution of substances. The category of suitable comminution machines also includes devices with a rotor-stator system or rotor-rotor system. Their rotors are occupied with crushing tools, which are passed in the course of rotation on the tools of a stator or second rotor and crush the feed material in interaction with these. For example, shearing tools, knives, hammers and the like are known as comminution tools.
Beim Betrieb solcher Vorrichtungen sind die Zerkleinerungswerkzeuge starker mechanischer Beanspruchung ausgesetzt, die je nach Art des Aufgabeguts einen mehr oder minder starken Verschleiß verursacht. Mit zunehmendem Verschleiß ändert sich auch die Geometrie der Zerkleinerungswerkzeuge und damit die Wirksamkeit der Zerkleinerung. Auf Grund der damit verbundenen Abweichungen von den optimalen Ausgangsbedingungen leidet die Qualität des Endprodukt, das in seiner Form, Größe und Oberflächenbeschaffenheit von den Soll-Vorgaben abweicht oder aus dem Toleranzbereich fallenden Schwankungen unterworfen ist. Zudem steigt mit zunehmendem Verschleiß der Zerkleinerungswerkzeuge auch der Energieverbrauch und die Wärmeentwicklung innerhalb der Vorrichtung.In the operation of such devices, the crushing tools are exposed to heavy mechanical stress, which causes depending on the nature of the feed more or less severe wear. With increasing wear, the geometry of the comminution tools and thus the effectiveness of the comminution change. Due to the associated deviations from the optimal starting conditions, the quality of the final product suffers, which deviates in its shape, size and surface condition from the target specifications or is subject to fluctuations falling outside the tolerance range. In addition, with increasing wear of the crushing tools and the energy consumption and heat generation increases within the device.
Um diesen Nachteilen vorzubeugen ist es daher notwendig, in vorgegebenen Zeitintervallen das Verschleißmaß der Zerkleinerungswerkzeuge zu überprüfen. Der exakten Ermittlung des aktuellen Verschleißzustandes der Zerkleinerungswerkzeuge kommt somit eine große Bedeutung zu.In order to prevent these disadvantages, it is therefore necessary to check the wear rate of the comminution tools at predetermined time intervals. The exact determination of the current state of wear of the crushing tools is thus of great importance.
In der Praxis geschieht dies nicht selten lediglich durch eine visuelle Überprüfung ohne Einsatz weiterer Hilfsmittel. Die Genauigkeit der dabei gewonnen Erkenntnisse lässt erwartungsgemäß zu wünschen übrig. Daneben ist es üblich, den Abstand der Rotorwerkzeuge zum Stator, also die Weite de Arbeitsspalts, mit Hilfe eines Meterstabs zu ermitteln. Mit zunehmendem Verschleiß vergrößert sich dieser Abstand, der somit ein Indikator für den Verschleißzustand der Zerkleinerungswerkzeuge ist. Eine solche Art der Verschleißermittlung birgt jedoch die Gefahr, dass sich bei vorhandenem Verschleiß des Stators die dortige Bezugsfläche verändert, was zu einem verfälschten Messergebnis führt.In practice, this is often done only by a visual inspection without the use of other tools. As expected, the accuracy of the findings gained leaves much to be desired. In addition, it is customary the distance of Rotor tools to the stator, so the width de Arbeitsspalts to determine using a rule bar. With increasing wear, this distance increases, which is thus an indicator of the state of wear of the crushing tools. However, such a type of wear detection involves the risk that changes in the existing wear of the stator, the reference surface, resulting in a falsified measurement result.
Vor diesem Hintergrund besteht die Aufgabe der Erfindung darin, eine Möglichkeit zu schaffen, dauerhaft den Verschleiß an Zerkleinerungswerkzeugen zuverlässig, einfach und exakt zu bestimmen zu können.Against this background, the object of the invention is to provide a way to permanently determine the wear of shredding tools reliably, easily and accurately.
Diese Aufgabe wird durch ein Zerkleinerungswerkzeug mit den Merkmalen des Patentanspruchs 1, eine Vorrichtung mit den Merkmalen des Patentanspruchs 8 und ein Verfahren mit den Merkmalen des Patentanspruchs 12 gelöst.This object is achieved by a comminution tool having the features of
Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous developments emerge from the subclaims.
Die Erfindung basiert auf der Gegebenheit, dass bei anhaltendem Betrieb von mit gattungsgemäßen Zerkleinerungswerkzeugen ausgerüsteten Vorrichtungen sich der Abstand zwischen den wirksamen Kanten des Zerkleinerungsbereichs und dem Lagerbereich infolge Verschleißes zunehmend verringert, das Zerkleinerungswerkzeug in dieser Richtung also kürzer wird. Nur ein Verschleiß in dieser Richtung, der die Hauptverschleißrichtung definiert, wirkt sich auf die Spaltweite zum Stator oder benachbarten Rotor aus und beeinträchtigt folglich die Qualität der Zerkleinerung.The invention is based on the fact that with continued operation of equipped with generic crushing tools devices, the distance between the effective edges of the crushing area and the storage area due to wear increasingly reduced, the crushing tool is thus shorter in this direction. Only wear in this direction, which defines the main wear direction, affects the gap width to the stator or adjacent rotor and thus compromises the quality of comminution.
Die wirksamen Kanten im Sinne der Erfindung werden dabei von den Punkten des Zerkleinerungsbereichs gebildet, die die geringste Spaltweite zum Stator definieren, das heißt also den größten Abstand zum Lagerbereich aufweisen.The effective edges in the sense of the invention are formed by the points of the comminution area, which define the smallest gap width to the stator, that is to say have the greatest distance to the storage area.
Ausgehend von diesen Überlegungen besteht der Grundgedanke der Erfindung darin, die Bezugsfläche für eine Messlehre am Werkzeug selbst vorzusehen, so dass der Verschleiß am Rotor und/oder Stator ohne Einfluss auf das Messergebnis bleibt. Stattdessen ergibt sich das Verschleißmaß aus dem Abstand der wirksamen Kante senkrecht auf die Bezugsfläche. Dieser Abstand definiert die Abstandsrichtung, die gemäß der Erfindung parallel zur Hauptverschleißrichtung ist. In einer einfachen vorteilhaften Ausführungsform der Erfindung ist hierzu vorgesehen, dass mindestens eine Umfangsseite des Zerkleinerungswerkzeuges oberhalb der Bezugsfläche plan ausgebildet und die Bezugsfläche an dieser Seite angeordnet ist. Dadurch kann die Messlehre durch vollflächiges Anliegen an der planen Seite und Anschlagen an der Bezugsfläche einfach und präzise in Messposition gebracht werden.Based on these considerations, the basic idea of the invention is to provide the reference surface for a measuring gauge on the tool itself, so that the wear on the rotor and / or stator remains without influence on the measurement result. Instead, the amount of wear results from the distance of the effective edge perpendicular to the reference surface. This distance defines the distance direction, which according to the invention is parallel to the main wear direction. In a simple advantageous embodiment of the invention is provided for this purpose that at least one peripheral side of the crushing tool formed flat above the reference surface and the reference surface is arranged on this side. As a result, the measuring gauge can be easily and precisely brought into the measuring position by full contact with the flat side and striking the reference surface.
In Weiterbildung der Erfindung ist eine den Umfang des Zerkleinerungswerkzeugs umlaufende Bezugsfläche vorgesehen oder auch Bezugsflächen an sich gegenüberliegenden Seiten des Zerkleinerungswerkzeugs, die sich vorzugsweise über die gesamte Seitenlänge erstrecken. Vor allem bei Zerkleinerungswerkzeugen mit langen sich über die gesamte Arbeitsbreite der Vorrichtung erstreckenden wirksamen Kanten ergibt sich dabei der Vorteil, dass der Verschleißzustand über den gesamten Verlauf der wirksamen Kante ermittelt werden kann.In a further development of the invention, a circumferential surface of the comminution tool circumferential reference surface is provided or reference surfaces on opposite sides of the comminution tool, which preferably extend over the entire side length. Especially with crushing tools with long over the entire working width of the device extending effective edges, there is the advantage that the state of wear over the entire course of the effective edge can be determined.
Gemäß einer vorteilhaften Weiterbildung der Erfindung ist die Bezugsfläche von einem über den Außenumfang des Zerkleinerungswerkzeugs überstehenden Vorsprung oder Ansatz gebildet, was durch eine schlankere Form des Zerkleinerungsbereichs gegenüber dem Lagerbereich erreicht werden kann. Diese Ausführungsform hat den Vorteil, dass die Bezugsfläche gut zugänglich ist, was den Messvorgang erleichtert.According to an advantageous embodiment of the invention, the reference surface is formed by a projecting over the outer periphery of the crushing tool projection or approach, which can be achieved by a slimmer shape of the crushing region relative to the storage area. This embodiment has the advantage that the reference surface is easily accessible, which facilitates the measuring process.
Daneben liegen im Rahmen der Erfindung auch Ausführungsformen, bei denen zur Bildung von Bezugsflächen ein Rücksprung oder eine Nut am Außenumfang des Zerkleinerungswerkzeugs vorgesehen ist. Vor allem in Verbindung mit starkem Verschleiß verursachendem Aufgabegut besitzen solche Ausführungsformen den Vorteil, dass die Bezugsfläche dauerhaft geschützt ist und daher über die gesamte Lebensdauer eines Zerkleinerungswerkzeugs unverändert bleibt.In addition, within the scope of the invention are also embodiments in which a recess or a groove is provided on the outer circumference of the comminution tool for the formation of reference surfaces. Especially in connection with heavy wear causing feed such embodiments have the advantage that the reference surface is permanently protected and therefore remains unchanged over the entire life of a crushing tool.
Bei einer besonders bevorzugten Ausführungsform der Zerkleinerungswerkzeuge befindet sich die Bezugsfläche an der Seite des Zerkleinerungswerkzeugs, die beim Betrieb einer Zerkleinerungsvorrichtung im Strömungsschatten liegt, das heißt die in Rotationsrichtung rückwärtige Seite des Zerkleinerungswerkzeugs, und daher naturgemäß einem geringerem Verschleiß unterworfen ist.In a particularly preferred embodiment of the comminution tools, the reference surface is located on the side of the comminution tool, which lies in the flow shadow during operation of a comminution device, that is, the rear side of the comminution tool in the rotational direction, and is therefore naturally subjected to less wear.
Das gleiche Ziel verfolgt eine Ausführungsform der Erfindung, bei der die Bezugsfläche verglichen mit der Oberfläche des Rotors beziehungsweise der Werkzeugaufnahme im Rotor bündig oder sogar leicht tiefer liegt. Somit ist auch hier die Bezugsfläche vor einer überproportional starken mechanischen Beanspruchung im Zuge der Zerkleinerung des Aufgabeguts geschützt.The same aim pursues an embodiment of the invention in which the reference surface is flush or even slightly lower compared to the surface of the rotor or the tool holder in the rotor. Thus, here is the reference surface in front of a disproportionately strong mechanical stress in the course of crushing the feed protected.
Die Erfindung wird nachstehend anhand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert.The invention will be explained in more detail with reference to the embodiments illustrated in the drawings.
Es zeigt
- die
Fig. 1a und b einen Schnitt und eine Seitenansicht eines unverbrauchten Zerkleinerungswerkzeugs in Form eines Schermessers, - die
Fig. 2a und b einen Querschnitt und eine Seitenansicht des in denFig. 1a und b gezeigten Werkzeugs mit Verschleiß, - die
Fig. 3a und b den Vorgang der Verschleißermittlung bei dem in denFig. 2a und b gezeigten Zerkleinerungswerkzeug, - die
Fig. 4a und b eine Seitenansicht und einen Schnitt eines unverbrauchten Zerkleinerungswerkzeugs in Form eines Hammers, - die
Fig. 5a und b eine Seitenansicht und einen Schnitt des in denFig. 4a und b gezeigten Werkzeugs mit Verschleiß, -
Fig. 6 den Vorgang der Verschleißermittlung bei dem in denFig. 5a und b gezeigten Zerkleinerungswerkzeug, - die
Fig. 7a und b einen Schnitt und eine Seitenansicht eines unverbrauchten Zerkleinerungswerkzeugs in Form eines Messers, - die
Fig. 8a und b einen Schnitt und eine Seitenansicht des in denFig. 7a und b dargestellten Zerkleinerungswerkzeugs mit Verschleiß und - die
Fig. 9a bis c Querschnitte weiterer Ausführungsformen erfindungsgemäßer Zerkleinerungswerkzeuge.
- the
Fig. 1a and b a section and a side view of an unused crushing tool in the form of a shear blade, - the
Fig. 2a and b a cross section and a side view of the in theFig. 1a and b shown tool with wear, - the
Fig. 3a and b the process of wear detection in the in theFig. 2a and b crushing tool shown, - the
Fig. 4a and b a side view and a section of a fresh crushing tool in the form of a hammer, - the
Fig. 5a and b a side view and a section of the in theFig. 4a and b shown tool with wear, -
Fig. 6 the process of wear detection in the in theFig. 5a and b crushing tool shown, - the
Fig. 7a and b a section and a side view of a fresh crusher tool in the form of a knife, - the
Fig. 8a and b a section and a side view of the in theFig. 7a and b shown shredding tool with wear and - the
Fig. 9a to c Cross sections of further embodiments of inventive comminution tools.
Die
Das in den
Wie vor allem aus dem Schnitt hervorgeht, weist die Scherleiste 3 zwei planparallele Seiten 34 auf, die gegenüber dem Grundkörper 2 nach Innen versetzt sind. Dadurch bildet der Grundkörper 2 beidseitig über die gesamte Längserstreckung verlaufende Vorsprünge am Außenumfang des Zerkleinerungswerkzeugs 1 aus, die jeweils die Bezugsfläche 5 ergeben und planparallel zur durch das Ende der Zerkleinerungswerkzeuge 1 festgelegten Ebene verlaufen. Der senkrechte Abstand A0 der wirksamen Kanten 4 auf die Bezugsflächen 5 definiert das Soll-Maß bei unverbrauchten Zerkleinerungswerkzeugen 1.As can be seen in particular from the section, the
Die
Die Ermittlung des Abstandes A1 ist in den
Die
In den
Der Zustand des Zerkleinerungswerkzeugs 10 nach dessen Einsatz in einer Zerkleinerungsvorrichtung ist wiederum in den
Ein weiteres die Erfindung nicht abschließendes Ausführungsbeispiel geht aus den
Die
Die
Bei den in den
Aus
Es wird darauf hingewiesen, dass vorliegende Erfindung nicht auf die in den einzelnen Ausführungsformen beschriebenen Merkmalskombinationen beschränkt ist, sondern auch Kombinationen von Merkmalen unterschiedlicher Ausführungsformen in Rahmen der Erfindung liegen, auch wenn diese nicht ausdrücklich erwähnt sind.It should be understood that the present invention is not limited to the combinations of features described in the individual embodiments, but also combinations of features of different embodiments are within the scope of the invention, even if not expressly mentioned.
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009008642A DE102009008642A1 (en) | 2009-02-12 | 2009-02-12 | Crushing tool and crushing device with such a crushing plant |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2218506A2 true EP2218506A2 (en) | 2010-08-18 |
EP2218506A3 EP2218506A3 (en) | 2013-08-28 |
EP2218506B1 EP2218506B1 (en) | 2015-03-18 |
Family
ID=42173984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10001175.8A Active EP2218506B1 (en) | 2009-02-12 | 2010-02-05 | Reduction tool and device with such a reduction tool and method for determining the wear level of such a reduction tool |
Country Status (6)
Country | Link |
---|---|
US (1) | US8333338B2 (en) |
EP (1) | EP2218506B1 (en) |
CA (1) | CA2693007C (en) |
DE (1) | DE102009008642A1 (en) |
DK (1) | DK2218506T3 (en) |
ES (1) | ES2539456T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI125789B (en) * | 2010-04-23 | 2016-02-15 | Metso Minerals Inc | Mineral Processing Equipment Consumption, Mineral Processing Equipment and Mineral Processing Facility |
CN105413803B (en) * | 2015-12-28 | 2018-01-02 | 贾利新 | The single roll crusher grate plate of dismounting and change is facilitated to protect loose piece |
CN106000534A (en) * | 2016-07-08 | 2016-10-12 | 烟台南山学院 | Single-roller grate plate free of frequent replacement |
CN111570061A (en) * | 2020-05-26 | 2020-08-25 | 徐立军 | Energy-saving environment-friendly construction waste crushing and recycling device and recycling method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2360003A1 (en) | 1973-12-01 | 1975-06-05 | Pallmann Kg Maschf | PROCESS FOR DEFIBRATING LEATHER OR OTHER MATERIALS OF FIBROUS STRUCTURE AND DEVICE FOR CARRYING OUT THE PROCESS |
EP0019542A1 (en) | 1979-05-17 | 1980-11-26 | APPAREILS DRAGON, Société Anonyme | Impact mills with articulated hammers |
DE102006056542A1 (en) | 2006-11-29 | 2008-06-05 | Pallmann Maschinenfabrik Gmbh & Co Kg | Device for processing feed material with a rotor-stator system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3314618A (en) * | 1965-01-14 | 1967-04-18 | Allis Chalmers Mfg Co | Crushing chamber wear indicator |
DE1507480A1 (en) * | 1966-09-15 | 1969-06-19 | Beteiligungs & Patentverw Gmbh | Cone crusher |
US3619439A (en) * | 1969-02-07 | 1971-11-09 | Champion Spark Plug Co | Method of making a brick with wear indicator |
US4886218A (en) * | 1988-12-21 | 1989-12-12 | Cae Machinery Ltd. | Mantle with replaceable wear plates |
US5184389A (en) * | 1990-09-11 | 1993-02-09 | Newmont Gold Company | Gyratory mantle liner assembly |
DE19716183A1 (en) * | 1997-04-18 | 1998-10-22 | Tekbilt Inc | Method and device for measuring distance in agricultural machinery |
US6129297A (en) * | 1997-07-30 | 2000-10-10 | Martin Marietta Materials, Inc. | Cone crusher with wear indicator |
US5927622A (en) * | 1997-11-07 | 1999-07-27 | Eurohansa, Inc. | Waste grinder and bit therefore |
DE20314764U1 (en) * | 2003-09-22 | 2003-12-11 | Plahuta, Igor | Granulator rotary cutting tool has first set of blades operated in conjunction with a stator knife and gap correction sensor |
WO2005028113A1 (en) * | 2003-09-22 | 2005-03-31 | Igor Plahuta | Coarse material crusher and process for operating a coarse material crusher |
US7172144B1 (en) * | 2006-03-09 | 2007-02-06 | Dennis Slater | System for measuring wear in a grinding mill |
DE202007011572U1 (en) * | 2007-08-17 | 2007-10-18 | Becker, Udo | Grobstoffzerkleinerer |
-
2009
- 2009-02-12 DE DE102009008642A patent/DE102009008642A1/en not_active Ceased
-
2010
- 2010-02-05 DK DK10001175.8T patent/DK2218506T3/en active
- 2010-02-05 ES ES10001175.8T patent/ES2539456T3/en active Active
- 2010-02-05 EP EP10001175.8A patent/EP2218506B1/en active Active
- 2010-02-11 CA CA2693007A patent/CA2693007C/en active Active
- 2010-02-12 US US12/705,205 patent/US8333338B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2360003A1 (en) | 1973-12-01 | 1975-06-05 | Pallmann Kg Maschf | PROCESS FOR DEFIBRATING LEATHER OR OTHER MATERIALS OF FIBROUS STRUCTURE AND DEVICE FOR CARRYING OUT THE PROCESS |
EP0019542A1 (en) | 1979-05-17 | 1980-11-26 | APPAREILS DRAGON, Société Anonyme | Impact mills with articulated hammers |
DE102006056542A1 (en) | 2006-11-29 | 2008-06-05 | Pallmann Maschinenfabrik Gmbh & Co Kg | Device for processing feed material with a rotor-stator system |
Also Published As
Publication number | Publication date |
---|---|
EP2218506A3 (en) | 2013-08-28 |
DK2218506T3 (en) | 2015-06-22 |
US20100206967A1 (en) | 2010-08-19 |
EP2218506B1 (en) | 2015-03-18 |
CA2693007C (en) | 2014-01-14 |
DE102009008642A1 (en) | 2010-08-26 |
CA2693007A1 (en) | 2010-08-12 |
US8333338B2 (en) | 2012-12-18 |
ES2539456T3 (en) | 2015-07-01 |
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