EP3789119B1 - Hollow rotor - Google Patents
Hollow rotor Download PDFInfo
- Publication number
- EP3789119B1 EP3789119B1 EP20194564.9A EP20194564A EP3789119B1 EP 3789119 B1 EP3789119 B1 EP 3789119B1 EP 20194564 A EP20194564 A EP 20194564A EP 3789119 B1 EP3789119 B1 EP 3789119B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow rotor
- outside surface
- accordance
- tools
- slots
- 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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- 239000002184 metal Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 2
- 239000011796 hollow space material Substances 0.000 claims 1
- 230000003116 impacting effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement 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
-
- 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
-
- 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 hollow rotor according to the preamble of claim 1.
- a generic hollow rotor in which tool holders are arranged on the outside of the rotor jacket, in each of which a cutting tool can be positively fixed.
- the configuration as a polygonal hollow rotor advantageously combines the low weight of the rotor with the possibility of positioning the cutting tool simply and precisely.
- the invention is based on the object of improving a generic hollow rotor in such a way that it can be produced with the highest possible degree of precision and at the same time as economically as possible.
- a high degree of mechanical stability of the hollow cylinder is ensured on account of the assignment of the individual components to one another, which is precisely specified and inevitably adhered to just as precisely. Influences that would otherwise possibly act on the hollow rotor due to an imbalance occurring are minimized and can be practically ruled out. Due to the high mechanical stability, the hollow cylinder can be made of sheet metal with a comparatively small material thickness. This simplifies transport from the place of manufacture to the place of use, reduces the manufacturing costs and the required drive power and thus the energy requirement of a machine having the hollow rotor.
- a supporting wall can be provided with stiffening ribs.
- the support wall has the assembly slots, and the stiffening rib, which runs, for example, at right angles to the surface of the support wall, has the assembly tabs complementary thereto.
- Welding to the bulkhead can either be limited to the area of the mounting tabs of the rib or it can be made along the entire length of the rib.
- the assembly and welding of the stiffening ribs on the supporting wall can take place in the form of prefabrication, while the locations intended for welding are easily accessible before the supporting wall is connected to the lateral surface.
- the number of weld seams required to connect the sheet metal sections of the lateral surface can advantageously be reduced and the time required for producing the lateral surface can be correspondingly reduced if two adjacent flat sheet metal sections are formed together by a single sheet, with this sheet corresponding to the polygonal design of the lateral surface folded to form two sheet metal sections angled relative to each other.
- a sheet metal blank is bent only once and not several times, so that actually only two sheet metal sections standing at an angle to one another are created and not three or four. Even if the number of required weld seams could be further reduced by creating more than two sheet metal sections, the restriction to two sheet metal sections in a common sheet results in greater error tolerance when assembling the sheets to create the lateral surface, so that ultimately the Production of the hollow rotor is thereby simplified.
- the hollow rotor is used to treat material.
- a friction washer which has a hollow rotor inside a housing.
- the hollow rotor is equipped on the outside with a large number of tools, which are referred to as paddles, and which on the one hand serve to mix a material bed and on the other hand also act mechanically on the material in order to remove adhering impurities, for example by friction to free.
- the tools can also be used to comminute the material to be processed and for this purpose can be designed as cutting knives, milling tools, or they can be designed as impact bodies or crushing bodies, which are either permanently attached to the lateral surface of the hollow rotor, or which act as moving flails on the material.
- the tools each protrude radially outwards from the circumference of the lateral surface.
- the lateral surface can therefore have holding slots into which the holding tabs of the respective tool extend.
- the tools are fastened by welding along the contact lines where the tool touches the lateral surface.
- tool wear can advantageously be limited to a replaceable wear element of the tool.
- a wear element is attached to the tool in such a way that it can be detached from the tool in a non-destructive manner.
- a person skilled in the art is familiar with a number of options, for example a screw connection, a self-locking form fit, a catch, a self-locking press fit or the like.
- a fastening of the wear element on the tool is referred to as self-locking, which prevents the wear element from becoming detached due to the centrifugal forces occurring during operation and due to the forces acting in contact with the material to be machined.
- the lateral surface can have a plurality of free passage openings.
- the free through-openings are not filled, but are used for flow through the lateral surface in the radial direction.
- a sieve effect can therefore be provided so that only particles of a certain size can pass through the lateral surface. In such an application, it is possible that no tools are arranged on the lateral surface.
- a fluid can flow from the interior of the hollow rotor through the free passage openings to the outside, where the material to be treated is located, and where tools such as mixing blades or the like are possibly also arranged in order to use the fluid, for example, to support cleaning of the material, or to supplement a mechanical traction of the material by means of the tools with a chemical breakdown of the material by means of the fluid.
- stiffening ribs 6 do not run exactly radially outwards from the central axis of the hollow rotor 1, but rather offset at an angle to the central axis. They serve not only to mechanically stabilize the support walls 3, but also as clearing strips which, in accordance with the direction of rotation of the hollow rotor 1, convey material radially outwards which has gotten into a gap within a machine housing, which is between an axial end of the hollow rotor 1 and located on the machine housing.
- each several mounting slots 7 extend in an annular line over the circumference of the lateral surface 2, while the retaining slots 8 are each arranged axially parallel in the longitudinal direction of the lateral surface 2 on a straight line.
- mounting slots 7 are designed longer than the retaining slots 8 in the front end wall, namely the only one in 2 Visible supporting wall 3, mounting slots 7 are also arranged, which serve to accommodate mounting tabs of the stiffening ribs 6, and which differ from the mounting slots 7 of the lateral surface 2 in terms of shape and arrangement.
- the material inlet is close to the in 1 end of the hollow rotor 1 shown on the left is provided. Accordingly, the material outlet is located in the machine body near the in 1 end of the hollow rotor shown on the right.
- the collar 9 is used to deflect the material flow from the surface of the hollow rotor 1 by about 90° radially outwards and to lead it to the material outlet of the machine housing.
- a retaining plate 12 is used to hold a replaceable wear element 5.
- the retaining plate 12 is supported by two support plates 14 against the force exerted by the machined material during operation of the hollow rotor 1, so that when viewed from above the tool 4 has an overall U-shaped cross section .
- the two support plates 14 On their respective lower edge, the two support plates 14 each have a holding tab 15 with which they extend into 2 parallel holding slots 8 of the lateral surface 2 .
- the two support plates 14 are not the same size, so that due to their different size, the retaining plate 12 is inclined, which also occurs in 1 is recognizable.
- figure 5 shows a support wall 3 before its completion, i.e. before the installation slots for the stiffening ribs 6 are made, and accordingly also before the stiffening ribs 6 are attached to the support wall 3.
- the twelve corners of the support wall 3 are adjacent on both sides and also in the middle of each of the In each of twelve straight peripheral sections, a mounting bracket 16 protrudes radially outwards and is intended to dip into one of the mounting slots 7 of the lateral surface 2 .
- a front axle journal 17 can also be seen in each case, which is used to mount the hollow rotor 1 .
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Centrifugal Separators (AREA)
- Crushing And Pulverization Processes (AREA)
Description
Die Erfindung betrifft einen Hohlrotor nach dem Oberbegriff des Anspruchs 1.The invention relates to a hollow rotor according to the preamble of
Aus der
Ein weiteres Beispiel des Mehrkant-Hohlrotors ist in
Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Hohlrotor dahingehend zu verbessern, dass dieser mit einem möglichst hohen Maß an Präzision und dabei möglichst wirtschaftlich herstellbar ist.The invention is based on the object of improving a generic hollow rotor in such a way that it can be produced with the highest possible degree of precision and at the same time as economically as possible.
Diese Aufgabe wird durch einen Hohlrotor nach Anspruch eins gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen beschrieben.This object is achieved by a hollow rotor according to claim one. Advantageous developments are described in the dependent claims.
Die Erfindung schlägt mit anderen Worten vor, die Komponenten des Hohlrotors in Art eines Stecksystems miteinander zu verbinden. Hierzu weist die Mantelfläche schmale Öffnungen auf, die als Montageschlitze bezeichnet werden, weil sie zur Montage des Hohlrotors dienen. Vorschlagsgemäß bestehen die Stützwände, ähnlich wie die Blechabschnitte der polygonalen Mantelfläche, ebenfalls aus Blechen, so dass die Breite der Montageschlitze beispielsweise eng toleriert an die Materialstärke der Stützwände angepasst sein kann. Die Stützwände tragen die Blechzuschnitte der Mantelfläche, so dass die Mantelfläche der äußeren umlaufenden schmalen Kante einer Stützwand anliegt.In other words, the invention proposes connecting the components of the hollow rotor to one another in the manner of a plug-in system. For this purpose, the lateral surface has narrow openings, which are referred to as assembly slots because they are used to assemble the hollow rotor. According to the proposal, the supporting walls, like the sheet metal sections of the polygonal lateral surface, are also made of sheet metal, so that the width of the assembly slots can be adapted to the material thickness of the supporting walls with narrow tolerances, for example. The retaining walls carry the Sheet metal blanks of the lateral surface so that the lateral surface is in contact with the outer peripheral narrow edge of a support wall.
Die Stützwand weist radial nach außen ragende Montagelaschen auf, die sich in die Montageschlitze der Mantelfläche erstrecken. Auf diese Weise ist eine festgelegte Ausrichtung der Stützwände in der Mantelfläche sichergestellt. Fehler durch z.B. eine leicht schräg stehende Positionierung der Stützwände sind ausgeschlossen. Die dauerhafte Festlegung der zunächst positionsgenau ineinander gesteckten Bauelemente des Hohlrotors erfolgt durch eine Verschweißung der Blechbauteile. Dabei ist vorteilhaft, dass die Stützwände, die sich im Inneren der Mantelfläche befinden, problemlos von außen zugänglich sind, so dass deren Montagelaschen, die in die Montageschlitze ragen, mit dem jeweiligen, den Montageschlitz aufweisenden Blechzuschnitt der Mantelfläche verschweißt werden können.The support wall has mounting lugs which protrude radially outwards and which extend into the mounting slots of the lateral surface. In this way, a fixed alignment of the support walls in the lateral surface is ensured. Errors caused by e.g. positioning the supporting walls at a slight angle are excluded. The permanent fixing of the components of the hollow rotor, which are initially precisely positioned one into the other, is achieved by welding the sheet metal components. It is advantageous that the support walls, which are located inside the lateral surface, are easily accessible from the outside, so that their assembly tabs, which protrude into the assembly slots, can be welded to the respective sheet metal blank of the lateral surface that has the assembly slot.
Aufgrund der präzise vorgegebenen und zwangsläufig genauso präzise eingehaltenen Zuordnung der einzelnen Bauteile zueinander wird ein hohes Maß an mechanischer Stabilität des Hohlzylinders gewährleistet. Einflüsse, die ansonsten möglicherweise aufgrund einer auftretenden Unwucht auf den Hohlrotor einwirken würden, werden minimiert und können praktisch ausgeschlossen werden. Aufgrund der hohen mechanischen Stabilität kann der Hohlzylinder aus Blechen mit vergleichsweise geringer Materialstärke gefertigt werden. Dies vereinfacht den Transport vom Herstellungsort zum Einsatzort, reduziert die Herstellungskosten sowie die erforderliche Antriebsleistung und damit den Energiebedarf einer den Hohlrotor aufweisenden Maschine.A high degree of mechanical stability of the hollow cylinder is ensured on account of the assignment of the individual components to one another, which is precisely specified and inevitably adhered to just as precisely. Influences that would otherwise possibly act on the hollow rotor due to an imbalance occurring are minimized and can be practically ruled out. Due to the high mechanical stability, the hollow cylinder can be made of sheet metal with a comparatively small material thickness. This simplifies transport from the place of manufacture to the place of use, reduces the manufacturing costs and the required drive power and thus the energy requirement of a machine having the hollow rotor.
Die Verschweißung der Stützwände mit der Mantelfläche erfolgt für innen liegende Stützwände ausschließlich im Bereich von deren Montagelaschen, so dass abgesehen von deren problemloser Zugänglichkeit auch die Länge der herzustellenden Schweißnähte im Vergleich zu einer Vollverschweißung reduziert werden kann, was die Wirtschaftlichkeit bei der Herstellung des vorschlagsgemäßen Hohlrotors positiv beeinflusst. Die beiden äußeren Stützwände hingegen, die als Stirnwände des Hohlrotors bezeichnet werden, können vorteilhaft entlang ihres gesamten äußeren Umfangs mit der Mantelfläche verschweißt werden, um dem Hohlrotor ein möglichst hohes Maß an mechanischer Stabilität zu vermitteln. Zudem sind diese Stirnwände problemlos von außen erreichbar, so dass die Erzeugung der Schweißnaht problemlos und in dementsprechend kurzer Zeit möglich ist.The welding of the retaining walls to the lateral surface takes place for internal retaining walls exclusively in the area of their mounting brackets, so that apart from their easy accessibility, the length of the weld seams to be produced is reduced in comparison to a full weld can be, which has a positive effect on the economy in the manufacture of the proposed hollow rotor. The two outer support walls, however, which are referred to as end walls of the hollow rotor, can advantageously be welded to the lateral surface along their entire outer circumference in order to give the hollow rotor the highest possible degree of mechanical stability. In addition, these end walls can be reached from the outside without any problems, so that the weld seam can be produced without any problems and in a correspondingly short time.
Das Steckprinzip unter Verwendung von Montageschlitzen und Montagelaschen kann auch verwendet werden, um die Stützwände auch bei geringer Blechstärke möglichst biegesteif auszugestalten. Zu diesem Zweck kann eine Stützwand mit Versteifungsrippen versehen sein. Die Stützwand weist dabei die Montageschlitze auf, und die Versteifungsrippe, die beispielsweise rechtwinklig zur Fläche der Stützwand verläuft, weist die dazu komplementären Montagelaschen auf. Die Verschweißung mit der Stützwand kann entweder auf den Bereich der Montagelaschen der Versteifungsrippe begrenzt sein, oder sie kann über die gesamte Länge der Versteifungsrippe erfolgen. Die Montage und Verschweißung der Versteifungsrippen an der Stützwand kann in Art einer Vorfertigung erfolgen, während die zur Verschweißung vorgesehenen Stellen problemlos zugänglich sind, bevor die Stützwand mit der Mantelfläche verbunden wird.The plug-in principle using assembly slots and assembly lugs can also be used to design the supporting walls as rigid as possible, even with a small sheet thickness. For this purpose, a supporting wall can be provided with stiffening ribs. The support wall has the assembly slots, and the stiffening rib, which runs, for example, at right angles to the surface of the support wall, has the assembly tabs complementary thereto. Welding to the bulkhead can either be limited to the area of the mounting tabs of the rib or it can be made along the entire length of the rib. The assembly and welding of the stiffening ribs on the supporting wall can take place in the form of prefabrication, while the locations intended for welding are easily accessible before the supporting wall is connected to the lateral surface.
Es kann vorgesehen sein, die einzelnen ebenen Blechabschnitte der polygonalen Mantelfläche durch jeweils eigene Bleche zu schaffen. Die Anzahl der erforderlichen Schweißnähte, die zum Verbinden der Blechabschnitte der Mantelfläche erforderlich sind, kann vorteilhaft reduziert und der Zeitaufwand für die Herstellung der Mantelfläche dementsprechend verringert werden, wenn jeweils zwei benachbarte ebene Blechabschnitte gemeinsam von einem einzigen Blech gebildet sind, wobei dieses Blech entsprechend der polygonalen Ausgestaltung der Mantelfläche gekantet ist, um zwei winklig zueinander stehende Blechabschnitte zu bilden.Provision can be made for the individual flat sheet metal sections of the polygonal lateral surface to be created using separate sheets. The number of weld seams required to connect the sheet metal sections of the lateral surface can advantageously be reduced and the time required for producing the lateral surface can be correspondingly reduced if two adjacent flat sheet metal sections are formed together by a single sheet, with this sheet corresponding to the polygonal design of the lateral surface folded to form two sheet metal sections angled relative to each other.
Dabei kann vorteilhaft vorgesehen sein, einen Blechzuschnitt nur einfach und nicht etwa mehrfach zu kanten, so dass tatsächlich nur zwei winklig zueinander stehende Blechabschnitte geschaffen werden und nicht etwa drei oder vier. Auch wenn durch die Schaffung von mehr als zwei Blechabschnitten die Anzahl der erforderlichen Schweißnähte noch weiter reduziert werden könnte, ergibt sich durch die Beschränkung auf zwei Blechabschnitte in einem gemeinsamen Blech eine größere Fehlertoleranz bei der Montage der Bleche zur Schaffung der Mantelfläche, so dass letztlich die Herstellung des Hohlrotors dadurch vereinfacht wird.Advantageously, it can be provided that a sheet metal blank is bent only once and not several times, so that actually only two sheet metal sections standing at an angle to one another are created and not three or four. Even if the number of required weld seams could be further reduced by creating more than two sheet metal sections, the restriction to two sheet metal sections in a common sheet results in greater error tolerance when assembling the sheets to create the lateral surface, so that ultimately the Production of the hollow rotor is thereby simplified.
Der Hohlrotor wird zur Behandlung von Material verwendet. Beispielsweise ist aus der
Eine vorteilhafte Art, die Werkzeuge an der Mantelfläche zu montieren, besteht darin, dass auch in diesem Fall das vorschlagsgemäß Anwendung findende Stecksystem zum Einsatz kommt. Die Mantelfläche kann daher Halteschlitze aufweisen, in welche sich Haltelaschen des jeweiligen Werkzeugs erstrecken. Auf diese Weise kann die Anordnung der Werkzeuge auf der Mantelfläche konstruktiv vorgegeben werden und es ist sichergestellt, dass bei der Fertigung des Hohlrotors diese Anordnung auch zuverlässig mit hoher Präzision eingehalten wird. Die Befestigung der Werkzeuge erfolgt dadurch, dass entlang der Kontaktlinien, wo das Werkzeug die Mantelfläche berührt, eine Verschweißung erfolgen kann.An advantageous way of mounting the tools on the lateral surface is that the plug-in system used according to the proposal is also used in this case comes. The lateral surface can therefore have holding slots into which the holding tabs of the respective tool extend. In this way, the arrangement of the tools on the lateral surface can be specified structurally and it is ensured that this arrangement is also reliably adhered to with high precision during manufacture of the hollow rotor. The tools are fastened by welding along the contact lines where the tool touches the lateral surface.
Da das Werkzeug über eine Verschweißung dauerhaft mit der Mantelfläche des Hohlrotors verbunden ist, kann ein Werkzeugverschleiß vorteilhaft auf ein auswechselbares Verschleißelement des Werkzeugs begrenzt werden. Ein solches Verschleißelement ist am Werkzeug in der Art befestigt, dass es zerstörungsfrei von dem Werkzeug gelöst werden kann. Hierzu sind dem Fachmann mehrere Möglichkeiten bekannt, beispielsweise eine Verschraubung, ein selbstsichernder Formschluss, eine Verrastung, ein selbstsichernder Klemmsitz oder dergleichen. Als selbstsichernd wird in diesem Zusammenhang eine Befestigung des Verschleißelements am Werkzeug bezeichnet, die ein Lösen des Verschleißelement aufgrund der im Betrieb auftretenden Fliehkräfte sowie aufgrund der im Kontakt mit dem zu bearbeitenden Material einwirkenden Kräfte verhindert.Since the tool is permanently connected to the lateral surface of the hollow rotor by welding, tool wear can advantageously be limited to a replaceable wear element of the tool. Such a wear element is attached to the tool in such a way that it can be detached from the tool in a non-destructive manner. To this end, a person skilled in the art is familiar with a number of options, for example a screw connection, a self-locking form fit, a catch, a self-locking press fit or the like. In this context, a fastening of the wear element on the tool is referred to as self-locking, which prevents the wear element from becoming detached due to the centrifugal forces occurring during operation and due to the forces acting in contact with the material to be machined.
Vorteilhaft können die Bleche, die als Blechabschnitt der Mantelfläche, als Stützwand bzw. deren Versteifungsrippe, und / oder als Werkzeug bzw. als dessen Verschleißelement verwendet werden, als lasergeschnittene Bleche ausgestaltet sein. Hierdurch wird wirtschaftlich vorteilhaft eine nachbearbeitungsfreie Ausgestaltung der jeweiligen Bleche ermöglicht, und konstruktiv vorteilhaft können die Bleche mit einer hervorragenden Maßgenauigkeit und Wiederholgenauigkeit hergestellt werden, so dass das erwähnte Stecksystem mit geringem Spiel der einzelnen Bauteile zueinander erzeugt werden kann. Hierdurch werden Fehlstellungen, beispielsweise leichte Verkantungen oder Schrägstellungen benachbarter Bauteile zueinander, minimiert und die mechanische Stabilität des Hohlrotors wird verbessert.The metal sheets that are used as a sheet metal section of the lateral surface, as a supporting wall or its stiffening rib, and/or as a tool or as its wearing element can advantageously be designed as laser-cut metal sheets. This enables the respective metal sheets to be configured without post-processing, which is economically advantageous, and the metal sheets can be produced with excellent dimensional accuracy and repeatability, which is advantageous in terms of construction, so that the plug-in system mentioned can be produced with little play between the individual components. As a result, misalignments, such as slight canting or Inclinations of adjacent components to one another are minimized and the mechanical stability of the hollow rotor is improved.
Vorteilhaft kann die Mantelfläche mehrere freie Durchtrittsöffnungen aufweisen. Im Unterschied zu den Montageschlitzen, die zur Aufnahme von Montagelaschen der Stützwände vorgesehen sind, und im Unterschied zu den Halteschlitzen, die zur Aufnahme von Haltelaschen der Werkzeuge vorgesehen sind, werden die freien Durchtrittsöffnungen nicht ausgefüllt, sondern dienen zur Durchströmung der Mantelfläche in radialer Richtung. Je nach Einsatzzweck des Hohlrotors kann daher eine Siebwirkung vorgesehen sein, so dass nur Partikel einer bestimmten Größe die Mantelfläche passieren können. Möglicherweise sind in einem solchen Anwendungsfall auf der Mantelfläche keine Werkzeuge angeordnet. Oder es kann ein Fluid vom Inneren des Hohlrotors durch die freien Durchtrittsöffnungen nach außen strömen, wo sich das zu behandelnde Material befindet, und wo ggf. auch Werkzeuge wie Mischflügel oder dergleichen angeordnet sind, um mittels des Fluids beispielsweise eine Reinigung des Materials zu unterstützen, oder um eine mechanische Traktion des Materials mittels der Werkzeuge durch einen chemischen Aufschluss des Materials mittels des fluide zu ergänzen.Advantageously, the lateral surface can have a plurality of free passage openings. In contrast to the assembly slots, which are intended to accommodate assembly lugs of the support walls, and in contrast to the retaining slots, which are intended to accommodate retaining lugs of the tools, the free through-openings are not filled, but are used for flow through the lateral surface in the radial direction. Depending on the intended use of the hollow rotor, a sieve effect can therefore be provided so that only particles of a certain size can pass through the lateral surface. In such an application, it is possible that no tools are arranged on the lateral surface. Or a fluid can flow from the interior of the hollow rotor through the free passage openings to the outside, where the material to be treated is located, and where tools such as mixing blades or the like are possibly also arranged in order to use the fluid, for example, to support cleaning of the material, or to supplement a mechanical traction of the material by means of the tools with a chemical breakdown of the material by means of the fluid.
Ein Ausführungsbeispiel eines vorschlagsgemäßen Hohlrotors wird anhand der rein schematischen Darstellungen nachfolgend näher erläutert. Dabei zeigt
- Fig. 1
- eine perspektivische Ansicht auf einen mit Werkzeugen bestückten Hohlrotor,
- Fig. 2
- eine perspektivische Ansicht ähnlich
Fig. 1 auf den Hohlrotor vor dessen Fertigstellung, - Fig. 3
- einen gekanteten rechteckigen Blechzuschnitt, der zur Herstellung der Mantelfläche dient,
- Fig. 4
- drei Bleche, die zur Herstellung eines Werkzeugs dienen,
- Fig. 5
- ein Blech, welches zur Herstellung einer Stützwand dient, und
- Fig. 6
- eine perspektivische Ansicht, ähnlich
Fig. 1 , auf den Hohlrotor, jedoch von seinem gegenüberliegenden axialen Ende aus gesehen.
- 1
- a perspective view of a hollow rotor equipped with tools,
- 2
- a perspective view similar
1 on the hollow rotor before its completion, - 3
- a folded rectangular sheet metal blank, which is used to produce the lateral surface,
- 4
- three sheets of metal used to make a tool,
- figure 5
- a metal sheet used to make a retaining wall, and
- 6
- a perspective view, similar
1 , onto the hollow rotor but seen from its opposite axial end.
In den
Dabei zeigen die
Da in
In den
- 11
- Hohlrotorhollow rotor
- 22
- Mantelflächelateral surface
- 33
- Stützwandretaining wall
- 44
- WerkzeugTool
- 55
- Verschleißelementwear element
- 66
- Versteifungsrippestiffening rib
- 77
- Montageschlitzmounting slot
- 88th
- Halteschlitzretaining slot
- 99
- Kragencollar
- 1010
- Blechzuschnittsheet metal cutting
- 1111
- Blechabschnittsheet metal section
- 1212
- Halteblechretaining plate
- 1414
- Stützblechgusset
- 1515
- Haltelascheretaining tab
- 1616
- Montagelaschemounting tab
- 1717
- Achszapfenstub axle
Claims (10)
- Hollow rotor (1), having an outside surface (2) surrounding a hollow space and having supporting walls (3) that extend across the longitudinal axis of the hollow rotor (1) and support the outside surface (2), where in deviation from a round contour the hollow rotor (1) incorporates a polygonal cross-section and the outside surface (2) is made up of flat metal plate sections (11), characterised in that the outside surface (2) is pierced by narrow holes referred to as mounting slots (7), and that the supporting walls (3) are likewise made from metal sheet and incorporate mounting brackets (16) that protrude radially outwards and that the mounting brackets (16) extend into the mounting slots (7) and that the supporting walls (3) are connected to the outside surface (2) by welding the mounting brackets (16) to the metal plate sections (11) of the outside surface (2) that incorporate mounting slots (7).
- Hollow rotor in accordance with claim 1, where on the outer circumference of the hollow rotor (1) tools (4) for the mechanical impacting of material to be worked are disposed, particularly mixing blades, cutting or milling blades and/or beaters or crushers that protrude outwards from the circumference of the hollow rotor (1).
- Hollow rotor in accordance with claim 1 or 2, where the outside surface (2) incorporates a number of free through-holes.
- Hollow rotor in accordance with any one of the foregoing claims, where each two adjacent metal plate sections (11) are jointly formed by a folded metal plate blank (10).
- Hollow rotor in accordance with claim 2, where the outside surface (2) is pierced through with narrow holes referred to as "retaining slots" (8) and where the tools (4) incorporate retaining brackets (15) that protrude radially inwards and extend into the retaining slots (8) and where the tools (4) incorporate contact faces by which they rest against the outside surface (2) and where the tools (4) are welded to the outside surface (2) along their contact faces.
- Hollow rotor in accordance with any one of claims 2 to 5, where a tool (4) incorporates an exchangeable wearing element (5) that is fastened to the tool (4) in such a way that it can be detached from the tool (4) non-destructively.
- Hollow rotor in accordance with any one of the foregoing claims, where the metal plate sections (11) of the outside surface (2), the supporting walls (3) and/or the tools (4) are designed as laser-cut metal plates.
- Hollow rotor in accordance with any one of the foregoing claims, where two outer supporting walls (3) referred to as front walls are welded to the outside surface (2) along their entire circumference.
- Hollow rotor in accordance with any one of the foregoing claims, where a supporting wall (3) incorporates stiffening ribs (6), where both each supporting wall (3) and each of the stiffening ribs (6) are designed as metal plate blanks and the supporting wall (3) incorporates mounting slots (7) into which mounting brackets of a stiffening rib (6) extend and where a stiffening rib (6) is welded to the supporting wall (3).
- Hollow rotor in accordance with claim 9, where the stiffening rib (6) extends in a direction that deviates from an exactly radial alignment and is offset obliquely from the centre point of the supporting wall (3) in such a way that, depending on the provided direction of rotation of the hollow rotor (1), the stiffening rib (6) serves as a clearing blade that conveys radially outwards.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019123688.6A DE102019123688A1 (en) | 2019-09-04 | 2019-09-04 | Hollow rotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3789119A1 EP3789119A1 (en) | 2021-03-10 |
EP3789119B1 true EP3789119B1 (en) | 2022-06-01 |
Family
ID=72422054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20194564.9A Active EP3789119B1 (en) | 2019-09-04 | 2020-09-04 | Hollow rotor |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3789119B1 (en) |
DE (1) | DE102019123688A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1258574A (en) * | 1968-07-20 | 1971-12-30 | ||
DE3727042A1 (en) * | 1987-08-13 | 1989-02-23 | Schmidt Burr Peter Dipl Ing | Thermal reactor, in particular thin-film dryer |
CH689221A5 (en) * | 1993-10-26 | 1998-12-31 | Bloechlinger H Ag | Rotor for shredders. |
DE19623730A1 (en) * | 1996-06-14 | 1997-12-18 | Muething Agrar Technik Gmbh | Device for breaking of materials such as wood, metal, asphalt and compound materials |
CN202037031U (en) * | 2011-03-18 | 2011-11-16 | 江苏鹏胜重工有限公司 | Polygonal welded-type impact crushing rotor |
DE202017101443U1 (en) | 2017-03-13 | 2017-04-25 | Johannes Wissing | Friction |
-
2019
- 2019-09-04 DE DE102019123688.6A patent/DE102019123688A1/en not_active Withdrawn
-
2020
- 2020-09-04 EP EP20194564.9A patent/EP3789119B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102019123688A1 (en) | 2021-03-04 |
EP3789119A1 (en) | 2021-03-10 |
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