EP0033819B1 - Impeller wheel for abrasive blasting devices - Google Patents

Impeller wheel for abrasive blasting devices Download PDF

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Publication number
EP0033819B1
EP0033819B1 EP80710029A EP80710029A EP0033819B1 EP 0033819 B1 EP0033819 B1 EP 0033819B1 EP 80710029 A EP80710029 A EP 80710029A EP 80710029 A EP80710029 A EP 80710029A EP 0033819 B1 EP0033819 B1 EP 0033819B1
Authority
EP
European Patent Office
Prior art keywords
transverse axis
recesses
rib
wheel
throwing
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.)
Expired
Application number
EP80710029A
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German (de)
French (fr)
Other versions
EP0033819A3 (en
EP0033819A2 (en
Inventor
Hans-Georg Ing.-Grad. Wodausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Original Assignee
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag filed Critical Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Priority to AT80710029T priority Critical patent/ATE6601T1/en
Publication of EP0033819A2 publication Critical patent/EP0033819A2/en
Publication of EP0033819A3 publication Critical patent/EP0033819A3/en
Application granted granted Critical
Publication of EP0033819B1 publication Critical patent/EP0033819B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00Devices or accessories for generating abrasive blasts
    • B24C5/06Impeller wheels; Rotor blades therefor
    • B24C5/062Rotor blades or vanes; Locking means therefor

Definitions

  • the invention seeks to remedy this.
  • the invention has for its object to provide a centrifugal wheel in which, while maintaining the full symmetry and thus the possibility of four times the use of each throwing blade, one and the same guide disc wheel can be equipped with throwing blades of different lengths.
  • This object is achieved according to the invention in that in each rib-shaped side edge, both on the front and on the back, two recesses are provided in mirror image at a distance from the transverse axis, of which only those on the same side of the transverse axis on the front or The recesses provided on the back accommodate the clamping elements.
  • the rib-shaped side edges are provided on the end faces of the throwing blade and in the transverse axis with reinforcing ribs pointing outwards. These characteristics are known per se in throwing blades for centrifugal wheels, cf. DE-B2-2311 866 and DE-C-1 062 570.
  • throwing blades of different lengths can be used in one and the same guide disc wheel.
  • the “normal length” is obtained if the recesses for receiving the tensioning elements lie in the transverse axis of symmetry.
  • shorter and longer throwing blades according to the invention have the recesses in pairs in mirror image. The shorter and longer throwing blades are inserted into the guide disc wheel as well as the throwing blades with »normal length «.
  • a centrifugal wheel should be able to be operated with discharge diameters of 560 mm, 450 mm and 340 mm.
  • blades with a length of 160 mm are used for the average discharge diameter, which have the recesses for receiving the tensioning elements in the transverse symmetry axis.
  • blades with a length of 105 mm / 215 mm are used, which have recesses on both sides of the symmetry transverse axis at a distance of 27.5 mm for receiving the clamping elements.
  • a throwing scoop 1 used in the invention essentially consists of a rectangular base plate 2, the two sides of which serve as a blasting agent running surface.
  • the base plate 2 has a rib-shaped side edge 3 on each longitudinal edge.
  • the cross section of the throwing blade 1 thus takes the form of a double T.
  • the transitions from the base plate 2 to the side edges 3 are rounded, as required by the manufacturing processes of forging or casting.
  • each side edge has recesses 4 on each side, which are essentially semicircular.
  • the recesses 4 are provided both on the front and on the back of the throwing blade 1.
  • the recesses 4 provided in the same transverse axis serve to fasten the throwing vane to a guide disc wheel.
  • the clamping elements engage in the recesses shown on the left in FIG. 1.
  • the throwing blade is pivoted through 180 ° about the longitudinal axis BB.
  • the throwing blade is pivoted through 180 ° about the transverse axis AA, the tensioning elements engage in the recesses which are arranged in mirror image - then located at the location of the first recesses.
  • the rib-shaped side edges 3 are provided on the end faces of the throwing blade 1 and in the transverse axis AA with reinforcing ribs 5 pointing outwards.
  • the throwing blade 1 is completely symmetrical both with respect to its transverse axis A-A and with respect to its longitudinal axis B-B. It can be used in four different installation positions. This results in four identical modes of action.
  • the throwing shovel is a long throwing shovel, the following applies: in the case of a long throwing shovel with the right end face in FIG. 1 inserted into the guide disc wheel, the tensioning elements engage in the recesses shown on the right in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Guiding Agricultural Machines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Hydraulic Turbines (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Abstract

1. Centrifugal wheel for jet equipment with a guiding disc wheel and with scoops (1), fixed on to the guiding disc wheel with the help of stretching elements as stops, each of which is constructed on its front and rear side uniformly, symmetrically to its longitudinal axis (B-B) and to a transverse axis (A-A) running vertically to the longitudinal axis (B-B) in the plane of the scoop, and which has recesses (4), for the reception of the stretching elements, which are provided in rib-shaped side edges (3) of the scoops (1) in pairs in the manner of a mirror image at a distance from the transverse axis (A-A), characterized in that in each rib-shaped side edge (3) there are provided, not only on the front side but also on the rear side, two recesses (4) in the manner of a mirror image at a distance from the transverse axis (A-A), of which recesses (4) provided on the front or the rear side, only those on the same side of the transverse axis (A-A) accommodate the stretching elements.

Description

Die Erfindung bezieht sich auf ein Schleuderrad für Strahlmittelanlagen mit einem Leitscheibenrad und mit an dem Leitscheibenrad mit Hilfe von Spannelementen als Arretierungen befestigten Wurfschaufeln, von denen jede auf ihrer Vorder- und Rückseite gleich, symmetrisch zu ihrer Längsachse und zu einer senkrecht zur Längsachse in der Schaufelebene verlaufenden Querachse ausgebildet ist, und die für die Aufnahme der Spannelemente Ausnehmungen aufweist, die in rippenförmigen Seitenrändern der Wurfschaufel paarweise spiegelbildlich im Abstand von der Querachse angeordnet sind.The invention relates to a centrifugal wheel for abrasive systems with a guide disk wheel and with throwing vanes fastened to the guide disk wheel with the aid of tensioning elements as detents, each of which is identical on its front and rear sides, symmetrical to its longitudinal axis and to one perpendicular to the longitudinal axis in the blade plane extending transverse axis, and which has recesses for receiving the clamping elements, which are arranged in pairs in rib-shaped side edges of the throwing blade in mirror image at a distance from the transverse axis.

Ein Schleuderrad der vorgenannten Art ist aus der US-A-2 582 702 bekannt. Bei dem bekannten Schleuderrad sind in den Wurfschaufeln die Ausnehmungen in der Außenfläche des verbreiterten Seitenrandes vorgesehen. Sämtliche Ausnehmungen werden in allen Einbaulagen der Wurfschaufeln für die Befestigung benötigt. Mit dem bekannten Schleuderrad ist zwar die gewünschte Symmetrie - vierfache Möglichkeit des Einbaus jeder Wurfschaufel - gegeben; nicht erzielbar ist aber die Bestückung des Schleuderrads mit unterschiedlich langen Schaufeln unter Beibehaltung der Symmetrie.A centrifugal wheel of the aforementioned type is known from US-A-2 582 702. In the known centrifugal wheel, the recesses in the outer surface of the widened side edge are provided in the throwing blades. All recesses are required for fastening in all installation positions of the throwing blades. With the known centrifugal wheel, the desired symmetry - fourfold possibility of installing each throwing blade - is given; but it is not possible to equip the centrifugal wheel with blades of different lengths while maintaining the symmetry.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, ein Schleuderrad zu schaffen, bei dem unter Beibehaltung der vollständigen Symmetrie und damit der Möglichkeit des vierfachen Einsatzes jeder Wurfschaufel ein und dasselbe Leitscheibenrad mit unterschiedlich langen Wurfschaufeln bestückt werden kann. Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß in jedem rippenförmigen Seitenrand sowohl auf der Vorderseite als auch auf der Rückseite zwei Ausnehmungen spiegelbildlich im Abstand von der Querachse vorgesehen sind, von denen jeweils nur die auf derselben Seite der Querachse auf der Vorder- oder der Rückseite vorgesehenen Ausnehmungen die Spannelemente aufnehmen.The invention seeks to remedy this. The invention has for its object to provide a centrifugal wheel in which, while maintaining the full symmetry and thus the possibility of four times the use of each throwing blade, one and the same guide disc wheel can be equipped with throwing blades of different lengths. This object is achieved according to the invention in that in each rib-shaped side edge, both on the front and on the back, two recesses are provided in mirror image at a distance from the transverse axis, of which only those on the same side of the transverse axis on the front or The recesses provided on the back accommodate the clamping elements.

In Ausgestaltung der Erfindung sind die rippenförmigen Seitenränder an den Stirnseiten der Wurfschaufel und in der Querachse mit nach außen weisenden Verstärkungsrippen versehen. Diese Merkmale sind bei Wurfschaufeln für Schleuderräder an sich bekannt, vgl. DE-B2-2311 866 und DE-C-1 062 570.In an embodiment of the invention, the rib-shaped side edges are provided on the end faces of the throwing blade and in the transverse axis with reinforcing ribs pointing outwards. These characteristics are known per se in throwing blades for centrifugal wheels, cf. DE-B2-2311 866 and DE-C-1 062 570.

Bei der Erfindung können in ein und dasselbe Leitscheibenrad Wurfschaufeln unterschiedlicher Länge eingesetzt werden: Die »Normallänge« ergibt sich, wenn die Ausnehmungen für die Aufnahme der Spannelemente in der Symmetrie-Querachse liegen. Zu dieser Symmetrie-Querachse weisen kürzere und längere Wurfschaufeln gemäß der Erfindung die Ausnehmungen paarweise spiegelbildlich auf. Die kürzeren und längeren Wurfschaufeln werden ebenso in das Leitscheibenrad eingesetzt wie die Wurfschaufeln mit »Normallänge«. Wegen der ortsfesten Spannelemente einerseits und des Abschlusses mit dem Innendurchmesser des Leitscheibenrads andererseits benötigen kürzere und längere Wurfschaufeln Ausnehmungen für die Aufnahme der Spannelemente in einem Abstand von ihrer Stirnkante, der gleich dem Abstand der Spannelemente vom Innendurchmesser des Leitscheibenrads ist. Die vierfache Verwendbarkeit ergibt sich dadurch, daß die weiteren Ausnehmungen mit der Querachse als Spiegelebene vorgesehen sind. Nach dem Einbau in das Leitscheibenrad liegen die weiteren Ausnehmungen bezogen auf den Innendurchmesser des Leitscheibenrads bei kürzeren Schaufeln auf der zugewandten, bei längeren Schaufeln auf der abgewandten Seite der Spannelemente.In the case of the invention, throwing blades of different lengths can be used in one and the same guide disc wheel. The “normal length” is obtained if the recesses for receiving the tensioning elements lie in the transverse axis of symmetry. In relation to this transverse axis of symmetry, shorter and longer throwing blades according to the invention have the recesses in pairs in mirror image. The shorter and longer throwing blades are inserted into the guide disc wheel as well as the throwing blades with »normal length«. Because of the fixed clamping elements on the one hand and the closure with the inner diameter of the guide disc wheel, on the other hand, shorter and longer throwing blades require recesses for receiving the clamping elements at a distance from their front edge which is equal to the distance of the clamping elements from the inner diameter of the guide disc wheel. The fourfold usability results from the fact that the further recesses are provided with the transverse axis as a mirror plane. After installation in the guide pulley wheel, the further recesses, based on the inner diameter of the guide pulley wheel, lie on the facing side of the clamping elements in the case of shorter blades and on the opposite side of the clamping elements in the case of longer blades.

Ein Zahlenbeispiel soll die vorgenannten Ausführungen verdeutlichen: Ein Schleuderrad soll bei Abwurfdurchmessern von 560 mm, 450 mm und von 340 mm betrieben werden können. Bei einem Innendurchmesser des Leitscheibenrads von 130 mm werden für den mittleren Abwurfdurchmesser Schaufeln einer Länge von 160 mm verwendet, die die Ausnehmungen für die Aufnahme der Spannelemente in der Symmetrie-Querachse aufweisen. Für den kleineren/größeren Abwurfdurchmesser werden Schaufeln einer Länge von 105 mm/215 mm verwendet, die zu beiden Seiten von der Symmetrie-Querachse im Abstand von 27,5 mm Ausnehmungen für die Aufnahme der Spannelemente aufweisen.A numerical example should clarify the above-mentioned explanations: A centrifugal wheel should be able to be operated with discharge diameters of 560 mm, 450 mm and 340 mm. With an inner diameter of the guide disc wheel of 130 mm, blades with a length of 160 mm are used for the average discharge diameter, which have the recesses for receiving the tensioning elements in the transverse symmetry axis. For the smaller / larger discharge diameter, blades with a length of 105 mm / 215 mm are used, which have recesses on both sides of the symmetry transverse axis at a distance of 27.5 mm for receiving the clamping elements.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 die Ansicht einer kurzen Wurfschaufel;
  • Fig. 2 einen Querschnitt durch die Wurfschaufel entlang der Schnittlinie 11-11 in Fig. 1;
  • Fig. 3 einen Längsschnitt durch die Wurfschaufel entlang der Schnittlinie 111-111 in Fig. 1.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
  • 1 shows the view of a short throwing blade.
  • FIG. 2 shows a cross section through the throwing vane along the section line 11-11 in FIG. 1;
  • 3 shows a longitudinal section through the throwing vane along the section line 111-111 in FIG. 1.

Eine bei der Erfindung verwendete Wurfschaufel 1 besteht im wesentlichen aus einer rechteckigen Grundplatte 2, deren beide Seiten als Strahlmittellauffläche dienen. An jeder Längskante weist die Grundplatte 2 einen rippenförmigen Seitenrand 3 auf. Der Querschnitt der Wurfschaufel 1 erhält dadurch die Form eines Doppel-T. Die Übergänge von der Grundplatte 2 zu den Seitenrändern 3 sind abgerundet, wie es die Fertigungsverfahren des Schmiedens oder Gießens verlangen. Paarweise spiegelbildlich im Abstand von einer mittig verlaufenden Querachse A-A weist jeder Seitenrand auf jeder Seite Ausnehmungen 4 auf, die im wesentlichen halbkreisförmig ausgebildet sind. Die Ausnehmungen 4 sind sowohl auf der Vorderseite als auch auf der Rückseite der Wurfschaufel 1 vorgesehen. Die in derselben Querachse vorgesehenen Ausnehmungen 4 dienen der Befestigung der Wurfschaufel an einem Leitscheibenrad. Wird zum Beispiel die Wurfschaufel mit der in Fig. 1 rechten Stirnseite nach innen in das Leitscheibenrad eingebracht, greifen die Spannelemente in die in Fig. 1 links dargestellten Ausnehmungen. Das gleiche gilt, wenn die Wurfschaufel um die Längsachse B-B um 180° geschwenkt wird. Wird dagegen die Wurfschaufel um die Querachse A-A um 180° geschwenkt, greifen die Spannelemente in die - dann an der Stelle der ersten Ausnehmungen befindlichen - spiegelbildlich angeordneten Ausnehmungen. Die rippenförmigen Seitenränder 3 sind an den Stirnseiten der Wurfschaufel 1 und in der Querachse A-A mit nach außen weisenden Verstärkungsrippen 5 versehen.A throwing scoop 1 used in the invention essentially consists of a rectangular base plate 2, the two sides of which serve as a blasting agent running surface. The base plate 2 has a rib-shaped side edge 3 on each longitudinal edge. The cross section of the throwing blade 1 thus takes the form of a double T. The transitions from the base plate 2 to the side edges 3 are rounded, as required by the manufacturing processes of forging or casting. In pairs, mirror images at a distance from a central transverse axis AA, each side edge has recesses 4 on each side, which are essentially semicircular. The recesses 4 are provided both on the front and on the back of the throwing blade 1. The recesses 4 provided in the same transverse axis serve to fasten the throwing vane to a guide disc wheel. For example, if Throwing blade with the right end face in FIG. 1 introduced into the guide disc wheel, the clamping elements engage in the recesses shown on the left in FIG. 1. The same applies if the throwing blade is pivoted through 180 ° about the longitudinal axis BB. If, on the other hand, the throwing blade is pivoted through 180 ° about the transverse axis AA, the tensioning elements engage in the recesses which are arranged in mirror image - then located at the location of the first recesses. The rib-shaped side edges 3 are provided on the end faces of the throwing blade 1 and in the transverse axis AA with reinforcing ribs 5 pointing outwards.

Die Wurfschaufel 1 ist sowohl bezogen auf ihre Querachse A-A als auch bezogen auf ihre Längsachse B-B vollständig symmetrisch ausgebildet. Sie kann in vier verschiedenen Einbaulagen eingesetzt werden. Das ergibt vier gleiche Wirkungsweisen.The throwing blade 1 is completely symmetrical both with respect to its transverse axis A-A and with respect to its longitudinal axis B-B. It can be used in four different installation positions. This results in four identical modes of action.

Handelt es sich bei der Wurfschaufel um eine lange Wurfschaufel, gilt folgendes: Bei einer mit der in Fig. 1 rechten Stirnseite nach innen in das Leitscheibenrad eingebrachten langen Wurfschaufel greifen die Spannelemente in die in Fig. 1 rechts dargestellten Ausnehmungen.If the throwing shovel is a long throwing shovel, the following applies: in the case of a long throwing shovel with the right end face in FIG. 1 inserted into the guide disc wheel, the tensioning elements engage in the recesses shown on the right in FIG. 1.

Claims (2)

1. Centrifugal wheel for jet equipment with a guiding disc wheel and with scoops (1), fixed on to the guiding disc wheel with the help of stretching elements as stops, each of which is constructed on its front and rear side uniformly, symmetrically to its longitudinal axis (B-B) and to a transverse axis (A-A) running vertically to the longitudinal axis (B-B) in the plane of the scoop, and which has recesses (4), for the reception of the stretching elements, which are provided in rib-shaped side edges (3) of the scoops (1) in pairs in the manner of a mirror image at a distance from the transverse axis (A-A), characterised in that in each rib-shaped side edge (3) there are provided, not only on the front side but also on the rear side, two recesses (4) in the manner of a mirror image at a distance from the transverse axis (A-A), of which recesses (4) provided on the front or the rear side, onyl those on the same side of the transverse axis (A-A) accommodate the stretching elements.
2. Centrifugal wheel according to claim 1, characterised in that the rib-shaped side edges (3) on the front ends of the scoops (1) and in the transverse axis (A-A) are provided with outwardly directed reinforcing ribs (5).
EP80710029A 1980-02-09 1980-12-13 Impeller wheel for abrasive blasting devices Expired EP0033819B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80710029T ATE6601T1 (en) 1980-02-09 1980-12-13 BLAST WHEEL FOR BLASTING PLANTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3004857A DE3004857C2 (en) 1980-02-09 1980-02-09 Blasting media wheel
DE3004857 1980-02-09

Publications (3)

Publication Number Publication Date
EP0033819A2 EP0033819A2 (en) 1981-08-19
EP0033819A3 EP0033819A3 (en) 1982-03-03
EP0033819B1 true EP0033819B1 (en) 1984-03-14

Family

ID=6094203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80710029A Expired EP0033819B1 (en) 1980-02-09 1980-12-13 Impeller wheel for abrasive blasting devices

Country Status (3)

Country Link
EP (1) EP0033819B1 (en)
AT (1) ATE6601T1 (en)
DE (1) DE3004857C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109664203B (en) * 2019-01-30 2020-05-26 昆山亚比斯环保包装材料有限公司 Blade, impeller structure and projection equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582702A (en) * 1936-05-13 1952-01-15 Pangborn Corp Abrading apparatus
CH412613A (en) * 1962-11-16 1966-04-30 Geisseler Max Centrifugal wheel
DE2816602A1 (en) * 1978-04-17 1979-10-25 Vogel & Schemmann Masch Blast wheel for abrasive systems

Also Published As

Publication number Publication date
ATE6601T1 (en) 1984-03-15
EP0033819A3 (en) 1982-03-03
DE3004857A1 (en) 1981-08-20
EP0033819A2 (en) 1981-08-19
DE3004857C2 (en) 1987-04-30

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