EP3789119A1 - Hollow rotor - Google Patents

Hollow rotor Download PDF

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Publication number
EP3789119A1
EP3789119A1 EP20194564.9A EP20194564A EP3789119A1 EP 3789119 A1 EP3789119 A1 EP 3789119A1 EP 20194564 A EP20194564 A EP 20194564A EP 3789119 A1 EP3789119 A1 EP 3789119A1
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EP
European Patent Office
Prior art keywords
hollow rotor
sheet metal
slots
rotor according
tools
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Granted
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EP20194564.9A
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German (de)
French (fr)
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EP3789119B1 (en
Inventor
Johannes Wissing
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • 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 shell, in each of which a cutting tool can be fixed in a form-fitting manner.
  • the design as a polygonal hollow rotor advantageously combines the low weight of the rotor with the ability to position the cutting tool easily and precisely.
  • the invention is based on the object of improving a generic hollow rotor in such a way that it can be manufactured with the highest possible degree of precision and at the same time as economically as possible.
  • the invention proposes connecting the components of the hollow rotor to one another in the manner of a plug-in system.
  • the outer surface has narrow openings, which are referred to as assembly slots because they are used to assemble the hollow rotor.
  • the support walls similar to the sheet metal sections of the polygonal jacket surface, also consist of sheet metal, so that the width of the assembly slots can be adapted to the material thickness of the support walls, for example, with close tolerances.
  • the retaining walls carry the Sheet metal blanks of the lateral surface, so that the lateral surface rests against the outer circumferential narrow edge of a supporting wall.
  • the support wall has mounting tabs which protrude radially outward 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 due to e.g. a slightly inclined positioning of the supporting walls are excluded.
  • the permanent fixing of the components of the hollow rotor, which are initially plugged into one another in a precisely positioned manner, is carried out by welding the sheet metal components. It is advantageous that the support walls, which are located inside the jacket surface, are easily accessible from the outside, so that their mounting tabs, which protrude into the mounting slots, can be welded to the respective sheet metal blank of the jacket surface having the mounting slot.
  • the hollow cylinder Due to the precisely predetermined and inevitably just as precisely maintained assignment of the individual components to one another, a high degree of mechanical stability of the hollow cylinder is guaranteed. Influences that might otherwise act on the hollow rotor due to an imbalance occurring are minimized and can practically be ruled out. Due to the high mechanical stability, the hollow cylinder can be manufactured from sheet metal with a comparatively small material thickness. This simplifies the transport from the production site to the place of use, reduces the production costs as well as the required drive power and thus the energy requirement of a machine having the hollow rotor.
  • the support walls are welded to the jacket surface for internal support walls exclusively in the area of their mounting tabs, so that apart from their easy accessibility, the length of the weld seams to be produced is also reduced compared 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 which are referred to as the end walls of the hollow rotor, can advantageously be welded to the jacket surface along their entire outer circumference in order to provide the hollow rotor with the highest possible degree of mechanical stability.
  • these end walls are easily accessible from the outside, so that the welding seam can be produced without problems and in a correspondingly short time.
  • a support wall can be provided with stiffening ribs.
  • the support wall has the mounting slots, and the stiffening rib, which for example runs at right angles to the surface of the support wall, has the complementary mounting tabs.
  • the welding to the support wall can either be limited to the area of the mounting tabs of the stiffening rib, or it can take place over the entire length of the stiffening rib.
  • the assembly and welding of the stiffening ribs on the support wall can be carried out in the manner of a prefabrication, while the points provided for welding are easily accessible before the support wall is connected to the outer surface.
  • the number of weld seams required to connect the sheet metal sections of the jacket surface can advantageously be reduced and the time required for the production of the jacket surface can be reduced accordingly if two adjacent flat sheet metal sections are formed together from a single sheet, this sheet metal corresponding to the polygonal design of the lateral surface is folded to form two sheet metal sections at an angle to one another.
  • a sheet metal blank is only edged once and not several times, so that actually only two sheet metal sections at an angle to one another are created and not three or four, for example. Even if the number of required weld seams could be reduced even further by creating more than two sheet metal sections, the restriction to two sheet metal sections in a common sheet results in a greater error tolerance when assembling the sheets to create the outer surface, so that ultimately the Production of the hollow rotor is simplified.
  • the hollow rotor is used to treat material.
  • a fiction washer which has a hollow rotor inside a housing.
  • the hollow rotor is equipped with a large number of tools on the outside, which are called paddles, and which serve to mix a bed of material on the one hand and also act mechanically on the material on the other hand, for example by friction from adhering impurities to free.
  • the tools can also be used to shred the material to be processed and for this purpose be designed as cutting knives, milling tools, or they can be designed as impact bodies or breaking bodies, which are either fixedly attached to the outer surface of the hollow rotor, or which act as movable mallets on the material.
  • the tools each protrude radially outward from the circumference of the lateral surface.
  • An advantageous way of assembling the tools on the lateral surface consists in using the plug-in system that is used in accordance with the proposal in this case as well comes.
  • the jacket surface can therefore have holding slots into which holding tabs of the respective tool extend.
  • the arrangement of the tools on the outer surface can be predetermined structurally and it is ensured that this arrangement is also reliably adhered to with high precision during the manufacture of the hollow rotor.
  • the tools are fastened in that welding can take place along the contact lines where the tool touches the outer surface.
  • tool wear can advantageously be limited to an exchangeable 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 fastening of the wear element on the tool is referred to as self-locking, which prevents loosening of the wear element due to the centrifugal forces occurring during operation and due to the forces acting in contact with the material to be processed.
  • the metal sheets which are used as a sheet metal section of the lateral surface, as a support wall or its stiffening rib, and / or as a tool or as its wear element, can advantageously be designed as laser-cut metal sheets.
  • a rework-free design of the respective sheets is made possible in an economically advantageous manner, and structurally advantageous, the sheets can be produced with excellent dimensional accuracy and repeatability, so that the aforementioned plug-in system can be produced with little play between the individual components. This causes misalignments, for example slight canting or Inclination of adjacent components to one another is minimized and the mechanical stability of the hollow rotor is improved.
  • the jacket surface can advantageously have a plurality of free passage openings.
  • the free passage openings are not filled, but are used to 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 outer surface. In such an application, it is possible that no tools are arranged on the lateral surface.
  • a fluid can flow from the inside of the hollow rotor through the free passage openings to the outside, where the material to be treated is located and where, if necessary, tools such as mixing blades or the like are also arranged in order, for example, to support cleaning of the material by means of the fluid, or in order to supplement mechanical traction of the material by means of the tools by chemical decomposition of the material by means of the fluid.
  • a hollow rotor 1 which has a polygonal outer surface 2 which is supported by a total of six support walls 3.
  • One of the support walls 3 is shown as a front end wall in Fig. 1 evident.
  • the hollow rotor 1 has a multiplicity of tools 4 which are arranged on its lateral surface 2 and extend radially outward therefrom.
  • the tools 4 each have an approximately U-shaped cross section and each carry a wear element 5 in the form of a rectangular wear plate that is screwed to the tool 4.
  • Reinforcing ribs 6 run from the central area of the support wall 3 outward to the outer surface 2.
  • Fig. 1 and 6th that the stiffening ribs 6 do not run exactly radially outward from the central axis of the hollow rotor 1, but rather run obliquely offset to the central axis. They are not only used 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 outward that has got into a gap within a machine housing that is located between an axial end of the hollow rotor 1 and the machine housing.
  • Fig. 2 shows the hollow rotor 1 before its completion, still without the tools 4 and the stiffening ribs 6.
  • the outer surface 2 is provided with a large number of holes, which are designated as mounting slots 7 and holding slots 8 and are designed differently.
  • a plurality of assembly slots 7 each extend in an annular line over the circumference of the lateral surface 2, while the holding slots 8 are each arranged axially parallel in the longitudinal direction of the lateral surface 2 on a straight line.
  • the mounting slots 7 are designed to be longer than the holding slots 8 in the front end wall, namely the only one in Fig. 2 visible support wall 3, assembly slots 7 are also arranged, which serve to receive assembly tabs of the stiffening ribs 6, and which differ from the assembly slots 7 of the lateral surface 2 in terms of shape and arrangement.
  • Fig. 2 the hollow rotor 1 is shown before its final completion, is at its rear, in Fig. 2 end shown on the right, also a circumferential collar not recognizable, which in Fig. 1 can be seen as a collar 9.
  • the collar 9 is designed as a radially outer region of the support wall 3, which is located at this axial end of the hollow rotor 1.
  • the material that is processed with the aid of the hollow rotor 1 flows along the hollow rotor 1 in an axial flow direction, whereby it is also carried along in the circumferential direction of the hollow rotor due to the rotary movement of the hollow rotor and thus covers a helical path overall within the aforementioned machine housing.
  • the material inlet is close to the in Fig. 1 End of the hollow rotor 1 shown on the left is provided. Accordingly, the material outlet is located in the machine housing near the in Fig. 1 end of the hollow rotor shown on the right.
  • the collar 9 serves to deflect the material flow from the surface of the hollow rotor 1 by approximately 90 ° radially outwards and to guide it to the material outlet of the machine housing.
  • Fig. 3 shows a rectangular sheet metal blank 10, which is folded in the middle in the longitudinal direction so that it forms two sheet metal sections 11 of the polygonal outer surface 2.
  • the sheet metal blank 10 extends over the entire length of the hollow rotor 1, so that with a total of six such sheet metal blanks 10, the twelve circumferential surfaces of the lateral surface 2 can be created.
  • Fig. 4 shows three metal sheets, which together form the tool 4, in the extended state.
  • a retaining plate 12 is used to hold a replaceable wear element 5.
  • the retaining plate 12 is supported by two supporting plates 14, so that the overall U-shaped cross-section of the tool 4 results in the top view .
  • the two support plates 14 At 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 of the same size, so that due to their different sizes there is an inclined position of the holding plate 12 which is also shown in FIG Fig. 1 is recognizable.
  • Fig. 5 shows a supporting wall 3 before its completion, i.e. before the introduction of assembly slots for the stiffening ribs 6, and accordingly also before the stiffening ribs 6 are attached to the supporting wall 3.
  • the twelve corners of the supporting wall 3 are adjacent on both sides and also in the middle of each of the twelve straight circumferential sections each have a mounting bracket 16 protruding radially outward, which is provided to dip into one of the mounting slots 7 of the lateral surface 2.
  • a front axle journal 17, which is used to support the hollow rotor 1, can also be seen in each case.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Centrifugal Separators (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Bei einem Hohlrotor (1),
mit einer einen Hohlraum umgebenden Mantelfläche (2)
und mit Stützwänden (3), die quer zur Längsachse des Hohlrotors (1) verlaufen und die Mantelfläche (2) stützen,
wobei abweichend von einer Kreiskontur der Hohlrotor (1) einen polygonalen Querschnitt aufweist und die Mantelfläche (2) aus ebenen Blechabschnitten (11) zusammengesetzt ist,
schlägt die Erfindung vor,
dass die Mantelfläche (2) von schmalen Öffnungen durchsetzt ist, die als Montageschlitze (7) bezeichnet sind,
und dass die Stützwände (3) ebenfalls aus Blechen bestehen und radial nach außen ragende Montagelaschen (16) aufweisen, und dass sich die Montagelaschen (16) in die Montageschlitze (7) erstrecken,
und dass die Stützwände (3) mit der Mantelfläche (2) dadurch verbunden sind, dass die Montagelaschen (16) mit den die Montageschlitze (7) aufweisenden Blechabschnitten (11) der Mantelfläche (2) verschweißt sind.

Figure imgaf001
With a hollow rotor (1),
with a jacket surface surrounding a cavity (2)
and with supporting walls (3) which run transversely to the longitudinal axis of the hollow rotor (1) and support the outer surface (2),
where, in deviation from a circular contour, the hollow rotor (1) has a polygonal cross-section and the outer surface (2) is composed of flat sheet metal sections (11),
the invention proposes
that the outer surface (2) is penetrated by narrow openings, which are designated as assembly slots (7),
and that the support walls (3) also consist of sheet metal and have mounting tabs (16) protruding radially outward, and that the mounting tabs (16) extend into the mounting slots (7),
and that the support walls (3) are connected to the jacket surface (2) in that the mounting tabs (16) are welded to the sheet metal sections (11) of the jacket surface (2) having the mounting slots (7).
Figure imgaf001

Description

Die Erfindung betrifft einen Hohlrotor nach dem Oberbegriff des Anspruchs 1.The invention relates to a hollow rotor according to the preamble of claim 1.

Aus der DE 196 23 730 A1 ist ein gattungsgemäßer Hohlrotor bekannt, bei dem außen am Rotormantel Werkzeughalter angeordnet sind, in denen jeweils ein Schneidwerkzeug formschlüssig festlegbar ist. Die Ausgestaltung als Mehrkant-Hohlrotor kombiniert vorteilhaft das geringe Gewicht des Rotors mit der Möglichkeit, das Schneidwerkzeug einfach und präzise zu positionieren.From the DE 196 23 730 A1 a generic hollow rotor is known in which tool holders are arranged on the outside of the rotor shell, in each of which a cutting tool can be fixed in a form-fitting manner. The design as a polygonal hollow rotor advantageously combines the low weight of the rotor with the ability to position the cutting tool easily and precisely.

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 manufactured 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 further developments are described in the subclaims.

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 outer 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 support walls, similar to the sheet metal sections of the polygonal jacket surface, also consist of sheet metal, so that the width of the assembly slots can be adapted to the material thickness of the support walls, for example, with close tolerances. The retaining walls carry the Sheet metal blanks of the lateral surface, so that the lateral surface rests against the outer circumferential narrow edge of a supporting 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 tabs which protrude radially outward 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 due to e.g. a slightly inclined positioning of the supporting walls are excluded. The permanent fixing of the components of the hollow rotor, which are initially plugged into one another in a precisely positioned manner, is carried out by welding the sheet metal components. It is advantageous that the support walls, which are located inside the jacket surface, are easily accessible from the outside, so that their mounting tabs, which protrude into the mounting slots, can be welded to the respective sheet metal blank of the jacket surface having the mounting 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.Due to the precisely predetermined and inevitably just as precisely maintained assignment of the individual components to one another, a high degree of mechanical stability of the hollow cylinder is guaranteed. Influences that might otherwise act on the hollow rotor due to an imbalance occurring are minimized and can practically be ruled out. Due to the high mechanical stability, the hollow cylinder can be manufactured from sheet metal with a comparatively small material thickness. This simplifies the transport from the production site to the place of use, reduces the production costs as well as 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 support walls are welded to the jacket surface for internal support walls exclusively in the area of their mounting tabs, so that apart from their easy accessibility, the length of the weld seams to be produced is also reduced compared 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, on the other hand, which are referred to as the end walls of the hollow rotor, can advantageously be welded to the jacket surface along their entire outer circumference in order to provide the hollow rotor with the highest possible degree of mechanical stability. In addition, these end walls are easily accessible from the outside, so that the welding seam can be produced without 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 tabs can also be used to make the support walls as rigid as possible, even with thin sheet metal. For this purpose, a support wall can be provided with stiffening ribs. The support wall has the mounting slots, and the stiffening rib, which for example runs at right angles to the surface of the support wall, has the complementary mounting tabs. The welding to the support wall can either be limited to the area of the mounting tabs of the stiffening rib, or it can take place over the entire length of the stiffening rib. The assembly and welding of the stiffening ribs on the support wall can be carried out in the manner of a prefabrication, while the points provided for welding are easily accessible before the support wall is connected to the outer 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 by separate sheets in each case. The number of weld seams required to connect the sheet metal sections of the jacket surface can advantageously be reduced and the time required for the production of the jacket surface can be reduced accordingly if two adjacent flat sheet metal sections are formed together from a single sheet, this sheet metal corresponding to the polygonal design of the lateral surface is folded to form two sheet metal sections at an angle to one another.

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.It can advantageously be provided that a sheet metal blank is only edged once and not several times, so that actually only two sheet metal sections at an angle to one another are created and not three or four, for example. Even if the number of required weld seams could be reduced even further by creating more than two sheet metal sections, the restriction to two sheet metal sections in a common sheet results in a greater error tolerance when assembling the sheets to create the outer surface, so that ultimately the Production of the hollow rotor is simplified.

Der Hohlrotor wird zur Behandlung von Material verwendet. Beispielsweise ist aus der DE 20 2017 101 443 U1 ein Fiktionswäscher bekannt, der im Inneren eines Gehäuses einen Hohlrotor aufweist. Zur mechanischen Beaufschlagung des zu behandelnden Materials ist der Hohlrotor außen mit einer Vielzahl von Werkzeugen bestückt, die als Paddel bezeichnet sind, und die einerseits zur Durchmischung eines Materialbetts dienen und andererseits auch mechanisch auf das Material einwirken, um es beispielsweise durch Reibung von anhaftenden Verunreinigungen zu befreien. Abgesehen von derartigen Paddeln bzw. Mischflügeln können die Werkzeuge auch zur Zerkleinerung des zu bearbeitenden Materials dienen und hierzu als Schneidmesser, Fräswerkzeuge ausgestaltet sein, oder sie können als Schlagkörper bzw. Brechkörper ausgestaltet sein, die entweder feststehend an der Mantelfläche des Hohlrotors befestigt sind, oder die als bewegliche Schlegel auf das Material einwirken. Die Werkzeuge ragen jeweils vom Umfang der Mantelfläche aus radial nach außen.The hollow rotor is used to treat material. For example, from the DE 20 2017 101 443 U1 a fiction washer is known which has a hollow rotor inside a housing. To mechanically act on the material to be treated, the hollow rotor is equipped with a large number of tools on the outside, which are called paddles, and which serve to mix a bed of material on the one hand and also act mechanically on the material on the other hand, for example by friction from adhering impurities to free. Apart from such paddles or mixing blades, the tools can also be used to shred the material to be processed and for this purpose be designed as cutting knives, milling tools, or they can be designed as impact bodies or breaking bodies, which are either fixedly attached to the outer surface of the hollow rotor, or which act as movable mallets on the material. The tools each protrude radially outward from the circumference of the lateral surface.

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 assembling the tools on the lateral surface consists in using the plug-in system that is used in accordance with the proposal in this case as well comes. The jacket surface can therefore have holding slots into which holding tabs of the respective tool extend. In this way, the arrangement of the tools on the outer surface can be predetermined structurally and it is ensured that this arrangement is also reliably adhered to with high precision during the manufacture of the hollow rotor. The tools are fastened in that welding can take place along the contact lines where the tool touches the outer 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 outer surface of the hollow rotor by welding, tool wear can advantageously be limited to an exchangeable 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. Several possibilities for this are known to the person skilled in the art, for example a screw connection, a self-locking form fit, a latching, 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 loosening of the wear element due to the centrifugal forces occurring during operation and due to the forces acting in contact with the material to be processed.

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, which are used as a sheet metal section of the lateral surface, as a support wall or its stiffening rib, and / or as a tool or as its wear element, can advantageously be designed as laser-cut metal sheets. In this way, a rework-free design of the respective sheets is made possible in an economically advantageous manner, and structurally advantageous, the sheets can be produced with excellent dimensional accuracy and repeatability, so that the aforementioned plug-in system can be produced with little play between the individual components. This causes misalignments, for example slight canting or Inclination of adjacent components to one another is 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.The jacket surface can advantageously have a plurality of free passage openings. In contrast to the mounting slots, which are provided for receiving mounting tabs of the support walls, and in contrast to the holding slots, which are provided for receiving retaining tabs of the tools, the free passage openings are not filled, but are used to 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 outer surface. In such an application, it is possible that no tools are arranged on the lateral surface. Or a fluid can flow from the inside of the hollow rotor through the free passage openings to the outside, where the material to be treated is located and where, if necessary, tools such as mixing blades or the like are also arranged in order, for example, to support cleaning of the material by means of the fluid, or in order to supplement mechanical traction of the material by means of the tools by chemical decomposition 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.
An exemplary embodiment of a proposed hollow rotor is explained in more detail below on the basis of the purely schematic representations. It shows
Fig. 1
a perspective view of a hollow rotor equipped with tools,
Fig. 2
a perspective view similar Fig. 1 on the hollow rotor before its completion,
Fig. 3
an edged rectangular sheet metal blank, which is used to produce the outer surface,
Fig. 4
three sheets that are used to manufacture a tool,
Fig. 5
a sheet metal, which is used to produce a retaining wall, and
Fig. 6
a perspective view, similar Fig. 1 , on the hollow rotor, but seen from its opposite axial end.

In den Fig. 1 und 6 ist ein Hohlrotor 1 dargestellt, der eine polygonale Mantelfläche 2 aufweist, welche von insgesamt sechs Stützwänden 3 gestützt wird. Eine der Stützwände 3 ist als vordere Stirnwand in Fig. 1 ersichtlich. Weiterhin weist der Hohlrotor 1 eine Vielzahl von Werkzeugen 4 auf, die auf seiner Mantelfläche 2 angeordnet sind und sich von dieser radial nach außen erstrecken. Die Werkzeuge 4 weisen jeweils einen annähernd U-förmigen Querschnitt auf und tragen jeweils ein Verschleißelement 5 in Form einer rechteckigen Verschleißplatte, die mit dem Werkzeug 4 verschraubt ist. Versteifungsrippen 6 verlaufen vom mittleren Bereich der Stützwand 3 nach außen bis zur Mantelfläche 2.In the Fig. 1 and 6th a hollow rotor 1 is shown which has a polygonal outer surface 2 which is supported by a total of six support walls 3. One of the support walls 3 is shown as a front end wall in Fig. 1 evident. Furthermore, the hollow rotor 1 has a multiplicity of tools 4 which are arranged on its lateral surface 2 and extend radially outward therefrom. The tools 4 each have an approximately U-shaped cross section and each carry a wear element 5 in the form of a rectangular wear plate that is screwed to the tool 4. Reinforcing ribs 6 run from the central area of the support wall 3 outward to the outer surface 2.

Dabei zeigen die Fig. 1 und 6, dass die Versteifungsrippen 6 nicht exakt radial von der Mittelachse des Hohlrotors 1 nach außen, sondern vielmehr schräg zur Mittelachse versetzt verlaufen. Sie dienen nicht nur zur mechanischen Stabilisierung der Stützwände 3, sondern auch als Räumleisten, die entsprechend der Drehrichtung des Hohlrotors 1 Material radial nach außen fördern, welches innerhalb eines Maschinengehäuses in einen Spalt geraten ist, der sich jeweils zwischen einem axialen Ende des Hohlrotors 1 und dem Maschinengehäuse befindet.They show Fig. 1 and 6th that the stiffening ribs 6 do not run exactly radially outward from the central axis of the hollow rotor 1, but rather run obliquely offset to the central axis. They are not only used 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 outward that has got into a gap within a machine housing that is located between an axial end of the hollow rotor 1 and the machine housing.

Fig. 2 zeigt den Hohlrotor 1 vor seiner Fertigstellung, noch ohne die Werkzeuge 4 und die Versteifungsrippen 6. Es ist ersichtlich, dass die Mantelfläche 2 mit einer Vielzahl von Löchern versehen ist, die als Montageschlitze 7 und als Halteschlitze 8 bezeichnet werden und unterschiedlich ausgestaltet sind. Jeweils mehrere Montageschlitze 7 erstrecken sich in einer ringförmigen Linie über den Umfang der Mantelfläche 2, während die Halteschlitze 8 jeweils achsparallel in Längsrichtung der Mantelfläche 2 auf einer geraden Linie angeordnet sind. Zudem sind die Montageschlitze 7 länger ausgestaltet als die Halteschlitze 8.in der vorderen Stirnwand, nämlich der einzigen in Fig. 2 ersichtlichen Stützwand 3, sind ebenfalls Montageschlitze 7 angeordnet, die zur Aufnahme von Montagelaschen der Versteifungsrippen 6 dienen, und die sich hinsichtlich Form und Anordnung von den Montageschlitzen 7 der Mantelfläche 2 unterscheiden. Fig. 2 shows the hollow rotor 1 before its completion, still without the tools 4 and the stiffening ribs 6. It can be seen that the outer surface 2 is provided with a large number of holes, which are designated as mounting slots 7 and holding slots 8 and are designed differently. A plurality of assembly slots 7 each extend in an annular line over the circumference of the lateral surface 2, while the holding slots 8 are each arranged axially parallel in the longitudinal direction of the lateral surface 2 on a straight line. In addition, the mounting slots 7 are designed to be longer than the holding slots 8 in the front end wall, namely the only one in Fig. 2 visible support wall 3, assembly slots 7 are also arranged, which serve to receive assembly tabs of the stiffening ribs 6, and which differ from the assembly slots 7 of the lateral surface 2 in terms of shape and arrangement.

Da in Fig. 2 der Hohlrotor 1 vor seiner endgültigen Fertigstellung dargestellt ist, ist an seinem hinteren, in Fig. 2 rechts dargestellten Ende, auch ein umlaufender Kragen nicht erkennbar, der in Fig. 1 als Kragen 9 erkennbar ist. Aus Fig. 6 ist erkennbar, dass der Kragen 9 als radial äußerer Bereich der Stützwand 3 ausgestaltet ist, die sich an diesem axialen Ende des Hohlrotors 1 befindet. Das Material, welches mithilfe des Hohlrotors 1 bearbeitet wird, strömt an dem Hohlrotor 1 in einer axialen Strömungsrichtung entlang, wobei es aufgrund der Drehbewegung des Hohlrotors auch in Umfangsrichtung des Hohlrotors mitgenommen wird und so insgesamt innerhalb des bereits erwähnten Maschinengehäuses einen wendelförmigen Weg zurückgelegt. Der Materialeinlass ist dabei nahe dem in Fig. 1 links dargestellten Ende des Hohlrotors 1 vorgesehen. Dementsprechend befindet sich der Materialauslass in dem Maschinengehäuse in der Nähe des in Fig. 1 rechts dargestellten Endes des Hohlrotors. Der Kragen 9 dient dazu, den Materialstrom von der Oberfläche des Hohlrotors 1 um etwa 90° radial nach außen umzulenken und zu dem Materialauslass des Maschinengehäuses zu führen.There in Fig. 2 the hollow rotor 1 is shown before its final completion, is at its rear, in Fig. 2 end shown on the right, also a circumferential collar not recognizable, which in Fig. 1 can be seen as a collar 9. Out Fig. 6 it can be seen that the collar 9 is designed as a radially outer region of the support wall 3, which is located at this axial end of the hollow rotor 1. The material that is processed with the aid of the hollow rotor 1 flows along the hollow rotor 1 in an axial flow direction, whereby it is also carried along in the circumferential direction of the hollow rotor due to the rotary movement of the hollow rotor and thus covers a helical path overall within the aforementioned machine housing. The material inlet is close to the in Fig. 1 End of the hollow rotor 1 shown on the left is provided. Accordingly, the material outlet is located in the machine housing near the in Fig. 1 end of the hollow rotor shown on the right. The collar 9 serves to deflect the material flow from the surface of the hollow rotor 1 by approximately 90 ° radially outwards and to guide it to the material outlet of the machine housing.

Fig. 3 zeigt einen rechteckigen Blechzuschnitt 10, der mittig in Längsrichtung gekantet ist, so dass er zwei Blechabschnitte 11 der polygonalen Mantelfläche 2 bildet. Der Blechzuschnitt 10 erstreckt sich über die gesamte Länge des Hohlrotors 1, so dass mit insgesamt sechs derartigen Blechzuschnitten 10 die zwölf Umfangsflächen der Mantelfläche 2 geschaffen werden können. Fig. 3 shows a rectangular sheet metal blank 10, which is folded in the middle in the longitudinal direction so that it forms two sheet metal sections 11 of the polygonal outer surface 2. The sheet metal blank 10 extends over the entire length of the hollow rotor 1, so that with a total of six such sheet metal blanks 10, the twelve circumferential surfaces of the lateral surface 2 can be created.

Fig. 4 zeigt drei Bleche, die gemeinsam das Werkzeug 4 bilden, im auseinandergezogenen Zustand. Ein Halteblech 12 dient zur Halterung eines auswechselbaren Verschleißelements 5. Gegen die Krafteinwirkung durch das bearbeitete Material während des Betriebs des Hohlrotors 1 ist das Halteblech 12 durch zwei Stützbleche 14 abgestützt, so dass sich in der Draufsicht ein insgesamt U-förmiger Querschnitt des Werkzeugs 4 ergibt. An ihrer jeweiligen Unterkante weisen die beiden Stützbleche 14 jeweils eine Haltelasche 15 auf, mit welcher sie sich in 2 parallele Halteschlitze 8 der Mantelfläche 2 erstrecken. Die beiden Stützbleche 14 sind nicht gleich groß, so dass sich aufgrund ihrer unterschiedlichen Größe eine Schrägstellung des Halteblechs 12 ergibt, die auch in Fig. 1 erkennbar ist. Fig. 4 shows three metal sheets, which together form the tool 4, in the extended state. A retaining plate 12 is used to hold a replaceable wear element 5. Against the force of the machined material during operation of the hollow rotor 1, the retaining plate 12 is supported by two supporting plates 14, so that the overall U-shaped cross-section of the tool 4 results in the top view . At 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 of the same size, so that due to their different sizes there is an inclined position of the holding plate 12 which is also shown in FIG Fig. 1 is recognizable.

Fig. 5 zeigt eine Stützwand 3 vor ihrer Fertigstellung, also vor der Einbringung von Montageschlitzen für die Versteifungsrippen 6, und dementsprechend auch vor der Anbringung der Versteifungsrippen 6 an der Stützwand 3. Den zwölf Ecken der Stützwand 3 jeweils beiderseits benachbart und auch in der Mitte eines jeden der zwölf geradlinigen Umfangsabschnitte ragt jeweils eine Montagelasche 16 radial nach außen, die dazu vorgesehen ist, in einen der Montageschlitze 7 der Mantelfläche 2 einzutauchen. Fig. 5 shows a supporting wall 3 before its completion, i.e. before the introduction of assembly slots for the stiffening ribs 6, and accordingly also before the stiffening ribs 6 are attached to the supporting wall 3. The twelve corners of the supporting wall 3 are adjacent on both sides and also in the middle of each of the twelve straight circumferential sections each have a mounting bracket 16 protruding radially outward, which is provided to dip into one of the mounting slots 7 of the lateral surface 2.

In den Fig. 1 und 2 ist zudem jeweils ein vorderer Achszapfen 17 erkennbar, der zur Lagerung des Hohlrotors 1 dient.In the Figs. 1 and 2 a front axle journal 17, which is used to support the hollow rotor 1, can also be seen in each case.

Bezugszeichen:Reference number:

11
HohlrotorHollow rotor
22
MantelflächeOuter surface
33
StützwandRetaining wall
44th
WerkzeugTool
55
VerschleißelementWear element
66th
VersteifungsrippeStiffening rib
77th
MontageschlitzMounting slot
88th
HalteschlitzRetaining slot
99
Kragencollar
1010
BlechzuschnittSheet metal cutting
1111
BlechabschnittSheet metal section
1212th
HalteblechRetaining plate
1414th
StützblechSupport plate
1515th
HaltelascheRetaining tab
1616
MontagelascheMounting bracket
1717th
AchszapfenStub axle

Claims (10)

Hohlrotor (1),
mit einer einen Hohlraum umgebenden Mantelfläche (2) und mit Stützwänden (3), die quer zur Längsachse des Hohlrotors (1) verlaufen und die Mantelfläche (2) stützen, wobei abweichend von einer Kreiskontur der Hohlrotor (1) einen polygonalen Querschnitt aufweist und die Mantelfläche (2) aus ebenen Blechabschnitten (11) zusammengesetzt ist,
dadurch gekennzeichnet,
dass die Mantelfläche (2) von schmalen Öffnungen durchsetzt ist, die als Montageschlitze (7) bezeichnet sind, und dass die Stützwände (3) ebenfalls aus Blechen bestehen und radial nach außen ragende Montagelaschen (16) aufweisen,
und dass sich die Montagelaschen (16) in die Montageschlitze (7) erstrecken,
und dass die Stützwände (3) mit der Mantelfläche (2) dadurch verbunden sind, dass die Montagelaschen (16) mit den die Montageschlitze (7) aufweisenden Blechabschnitten (11) der Mantelfläche (2) verschweißt sind.Hollow rotor (1),
with a circumferential surface (2) surrounding a cavity and with supporting walls (3) which run transversely to the longitudinal axis of the hollow rotor (1) and support the circumferential surface (2), with the hollow rotor (1) having a polygonal cross-section deviating from a circular contour and which The outer surface (2) is composed of flat sheet metal sections (11),
characterized,
that the outer surface (2) is penetrated by narrow openings, which are referred to as assembly slots (7), and that the support walls (3) also consist of sheet metal and have assembly tabs (16) protruding radially outward,
and that the mounting tabs (16) extend into the mounting slots (7),
and that the support walls (3) are connected to the jacket surface (2) in that the mounting tabs (16) are welded to the sheet metal sections (11) of the jacket surface (2) having the mounting slots (7). Hohlrotor nach Anspruch 1,
dadurch gekennzeichnet,
dass am äußeren Umfang des Hohlrotors (1) Werkzeuge (4) zur mechanischen Beaufschlagung von zu bearbeitendem Material angeordnet sind,
insbesondere Mischflügel, Schneid- oder Fräsmesser, und / oder Schlag- oder Brechkörper,
die vom Umfang des Hohlrotors (1) nach außen ragen.Hollow rotor according to claim 1,
characterized,
that on the outer circumference of the hollow rotor (1) tools (4) for the mechanical application of the material to be processed are arranged,
in particular mixing blades, cutting or milling knives, and / or striking or breaking bodies,
which protrude from the circumference of the hollow rotor (1) to the outside. Hohlrotor nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die Mantelfläche (2) mehrere freie Durchtrittsöffnungen aufweist.Hollow rotor according to claim 1 or 2,
characterized,
that the lateral surface (2) has several free passage openings. Hohlrotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass jeweils zwei benachbarte ebene Blechabschnitte (11) gemeinsam durch einen gekantetes Blechzuschnitt (10) gebildet sind.Hollow rotor according to one of the preceding claims, characterized in that
that in each case two adjacent flat sheet metal sections (11) are formed together by an edged sheet metal blank (10). Hohlrotor nach Anspruch 2,
dadurch gekennzeichnet,
dass die Mantelfläche (2) von schmalen Öffnungen durchsetzt ist, die als Halteschlitze (8) bezeichnet sind,
und dass die Werkzeuge (4) radial nach innen ragende Haltelaschen (15) aufweisen,
welche sich in die Halteschlitze (8) erstrecken,
und dass die Werkzeuge (4) Kontaktflächen aufweisen, mit denen sie der Mantelfläche (2) anliegen,
und dass die Werkzeuge (4) entlang ihrer Kontaktflächen mit der Mantelfläche (2) verschweißt sind.Hollow rotor according to claim 2,
characterized,
that the outer surface (2) is penetrated by narrow openings, which are designated as holding slots (8),
and that the tools (4) have retaining tabs (15) projecting radially inward,
which extend into the holding slots (8),
and that the tools (4) have contact surfaces with which they rest on the lateral surface (2),
and that the tools (4) are welded to the jacket surface (2) along their contact surfaces. Hohlrotor nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet,
dass ein Werkzeug (4) ein auswechselbares Verschleißelement (5) aufweist, das derart an dem Werkzeug (4) befestigt ist, dass es zerstörungsfrei von dem Werkzeug (4) lösbar ist.Hollow rotor according to one of Claims 2 to 5,
characterized,
that a tool (4) has an exchangeable wear element (5) which is fastened to the tool (4) in such a way that it can be detached from the tool (4) without being destroyed. Hohlrotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass die Blechabschnitte (11) der Mantelfläche (2), die Stützwände (3),
und / oder die Werkzeuge (4) als lasergeschnittene Bleche ausgestaltet sind.Hollow rotor according to one of the preceding claims, characterized in that
that the sheet metal sections (11) of the lateral surface (2), the support walls (3),
and / or the tools (4) are designed as laser-cut metal sheets. Hohlrotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass zwei äußere, als Stirnwände bezeichnete Stützwände (3) entlang ihres gesamten Umfangs mit der Mantelfläche (2) verschweißt sind.Hollow rotor according to one of the preceding claims, characterized in that
that two outer support walls (3), referred to as end walls, are welded to the jacket surface (2) along their entire circumference. Hohlrotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass eine Stützwand (3) Versteifungsrippen (6) aufweist, wobei sowohl die Stützwand (3) als auch die Versteifungsrippen (6) jeweils als Blechzuschnitte ausgestaltet sind und die Stützwand (3) Montageschlitze (7) aufweist, in welche sich Montagelaschen einer Versteifungsrippe (6) erstrecken,
und wobei eine Versteifungsrippe (6) mit der Stützwand (3) verschweißt ist.Hollow rotor according to one of the preceding claims, characterized in that
that a supporting wall (3) has stiffening ribs (6), both the supporting wall (3) and the stiffening ribs (6) are each designed as sheet metal blanks and the supporting wall (3) has assembly slots (7) into which mounting tabs of a stiffening rib ( 6) extend,
and wherein a stiffening rib (6) is welded to the support wall (3). Hohlrotor nach Anspruch 9,
dadurch gekennzeichnet,
dass die Versteifungsrippe (6) von einer exakt radialen Ausrichtung abweichend schräg zum Mittelpunkt der Stützwand (3) versetzt verläuft,
derart, dass in Abhängigkeit von der vorgesehenen Drehrichtung des Hohlrotors (1) die Versteifungsrippe (6) als Räumleiste mit radial nach außen gerichteter Förderwirkung dient.Hollow rotor according to claim 9,
characterized,
that the stiffening rib (6), deviating from an exactly radial orientation, runs obliquely to the center of the supporting wall (3),
in such a way that, depending on the intended direction of rotation of the hollow rotor (1), the stiffening rib (6) serves as a clearing strip with a conveying effect directed radially outward.
EP20194564.9A 2019-09-04 2020-09-04 Hollow rotor Active EP3789119B1 (en)

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DE102019123688.6A DE102019123688A1 (en) 2019-09-04 2019-09-04 Hollow rotor

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EP3789119A1 true EP3789119A1 (en) 2021-03-10
EP3789119B1 EP3789119B1 (en) 2022-06-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1258574A (en) * 1968-07-20 1971-12-30
EP0649680A1 (en) * 1993-10-26 1995-04-26 H. Blöchlinger AG Rotor for drum chopper respectively shredder
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3727042A1 (en) * 1987-08-13 1989-02-23 Schmidt Burr Peter Dipl Ing Thermal reactor, in particular thin-film dryer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1258574A (en) * 1968-07-20 1971-12-30
EP0649680A1 (en) * 1993-10-26 1995-04-26 H. Blöchlinger AG Rotor for drum chopper respectively shredder
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

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EP3789119B1 (en) 2022-06-01
DE102019123688A1 (en) 2021-03-04

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