EP0359143A2 - Clamping-bar for the rotor blades of impeller wheels in blasting or crushing devices - Google Patents

Clamping-bar for the rotor blades of impeller wheels in blasting or crushing devices Download PDF

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Publication number
EP0359143A2
EP0359143A2 EP89116637A EP89116637A EP0359143A2 EP 0359143 A2 EP0359143 A2 EP 0359143A2 EP 89116637 A EP89116637 A EP 89116637A EP 89116637 A EP89116637 A EP 89116637A EP 0359143 A2 EP0359143 A2 EP 0359143A2
Authority
EP
European Patent Office
Prior art keywords
blade
spring
clamping bar
arm
bow spring
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.)
Ceased
Application number
EP89116637A
Other languages
German (de)
French (fr)
Other versions
EP0359143A3 (en
Inventor
Johann Moelders
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.)
Wheelabrator Berger Maschinenfabriken GmbH and Co KG
Original Assignee
Wheelabrator Berger Maschinenfabriken GmbH and Co KG
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 Wheelabrator Berger Maschinenfabriken GmbH and Co KG filed Critical Wheelabrator Berger Maschinenfabriken GmbH and Co KG
Publication of EP0359143A2 publication Critical patent/EP0359143A2/en
Publication of EP0359143A3 publication Critical patent/EP0359143A3/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B24C5/062—Rotor blades or vanes; Locking means therefor

Definitions

  • the invention relates to a clamping bolt for the throwing blades of disc rotors in jet or comminution devices, the side edges of which can be inserted into radial grooves of the discs, the clamping bolt being supported against a cylinder bolt connecting the discs and against a shoulder on the blade rear with grooves has inserted in this bow spring, one end of which is fixed against the clamping bolt and the other end of which acts on the back of the blade between the shoulder and the radial outer edge of the blade and thus fixes the blade in the rotor.
  • a known clamp bolt of this type (DE-PS 23 56 226) consists of a cast clamp body, which has a rectilinear arm part, the flat outside facing the back of the blade in the installed state of the clamp bolt and in the area of the approach of the back of the blade one that can be placed thereon Inclined surface.
  • the arm part merges into a partially cylindrically curved arm attachment, and the arm part and arm attachment are also equipped with partially cylindrical surfaces which encompass the cylinder bolt connecting the disks of the rotor.
  • the following grooves are inserted to accommodate the bow spring.
  • the U-shaped bow of the bow spring acts on the back of the blade, and the two spring ends, inserted into the side shoulders and grooves, are arched up to the end of the arched heel, following the curvature, and each bent at two angles, attached to cams provided at the end of the arm base.
  • clamp bolt Although this known clamp bolt has proven itself in practical operation, it has a number of disadvantages in its manufacture and use.
  • the clamping bolt body consisting of the straight arm part and the partially cylindrical, curved arm attachment can only be cast in divisible casting molds with lower and upper boxes, the partial casting plane running radially in the center of the curved arm attachment.
  • the cast body therefore requires a relatively large amount of cleaning work, since the resulting burrs, particularly within the curved arm base, are difficult to access.
  • the curved part of the correspondingly curved part of the bow spring to be inserted into the grooves of the arched arm attachment permits only slight tolerance deviations, since it is otherwise difficult to insert into the grooves.
  • the invention has for its object to eliminate the disadvantages listed above.
  • This object is achieved in that the clamping bolt body forms an L-shaped angle piece which has approximately flat outer surfaces which run approximately at right angles to one another and run out into an inclined surface which can be placed on the shoulder of the blade.
  • Form of embodiment allows the clamping bar body to be cast without a partial casting plane, since one of the flat outer surfaces of the clamping bar body can form the top of the mold; there is the further advantage of a considerably smaller space requirement of the cast body in the mold. For processing after casting, only external flat surfaces need to be sanded.
  • the bow spring can then, as the invention further provides, have a pair of spring eyes which can be plugged onto lateral cam lugs of the L-arm of the clamping bolt body facing the back of the blade in the installed state, so that the two free ends and not the bow of the bow spring act on the back of the blade. These free ends can be bent away from the back of the blade in the installed state of the locking bolt.
  • the pair of spring eyes extends the spring travel considerably, and if one or both spring ends break, the locking action of the locking bolt for the rotor blade is retained, since the remaining remnants of the spring ends still act on the rear of the blade.
  • the clamp bolt body consists of an L-shaped angle piece with the L-arms 1 and 2, of which L-arm 1 faces the blade designated 3 of the rotor, not shown, and L-arm 2 faces away.
  • the two flat outer surfaces 1a and 2a of the L-arms 1 and 2 run towards each other into an inclined surface 4 which is placed on the shoulder 3a of the blade 3.
  • the L-arm 1 is supported with a partially cylindrical surface 1c against the cylinder bolt 5 connecting the rotor disks, not shown.
  • the L-arm 2, which is wider than the L-arm 1, thus forms shoulders on both sides and a corner groove 2c at its end.
  • the bow spring 6 is inserted with its bow 6a and the subsequent spring arms 6b, which merge in the area of the inclined surface 4 in spring eyes 6c, which are attached to the cam lugs 1d of the L-arm 1 and run into the spring ends 6d, which from the Back of the blade 3 are bent away.
  • the clamping bar body can be cast in such a way that the underside of the L-arm 2 lies in the plane of the mold top when cast, so that a split mold is not required.
  • the arch 6a of the bow spring 6 is protected against blasting agent exposure and is not connected to the back of the blade 3.
  • the spring 6 cannot be jammed by the remnants of the blasting agent, since the shoulders of the L-arm 2, which guide the spring, are open laterally and upwards.
  • the spring ends 6d are not guided; they move along the two sides of the L-arm 1, the same applies to the spring eyes 6c, which are only loosely attached to the cam lugs 1d.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

A clamping bar for the rotor blades (3) of impeller wheels in blasting or crushing devices. The side edges of the rotor blades (3) can be pushed into radial grooves of the wheels of the rotor. The clamping bar (1) is supported against a cylinder bolt (5) connecting the two wheels and against an extension (3a) on the rear side of the blade (3) and has grooves with a bow spring (6) which can be inserted into these grooves. One end of the bow spring (6) is secured against the clamping bar (1) for securing the blade (3) in the impeller wheel. In this arrangement, the body of the clamping bar forms an L-shaped angle piece which has bearing surfaces (1a and 2a) running approximately at right angles to one another, and these bearing surfaces (1a and 2a) run out into a sloping surface (4) which can be put onto the extension (3a) of the blade (3). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Klemmriegel für die Wurfschaufeln von Scheibenrotoren in Strahl- bzw. Zerklei­nerungsvorrichtungen, deren Seitenkanten in radiale Nuten der Scheiben einschiebbar sind, wobei der Klemmriegel, ab­gestützt gegen einen die Scheiben verbindenden Zylinderbol­zen und gegen einen Ansatz an der Schaufelrückseite Nuten mit einer in diese eingelegten Bügelfeder aufweist, deren eines Ende gegen den Klemmriegel festgelegt ist und deren anderes Ende die Schaufelrückseite zwischen dem Ansatz und der radialen Außenkante der Schaufel beaufschlagt und damit die Schaufel im Rotor festlegt.The invention relates to a clamping bolt for the throwing blades of disc rotors in jet or comminution devices, the side edges of which can be inserted into radial grooves of the discs, the clamping bolt being supported against a cylinder bolt connecting the discs and against a shoulder on the blade rear with grooves has inserted in this bow spring, one end of which is fixed against the clamping bolt and the other end of which acts on the back of the blade between the shoulder and the radial outer edge of the blade and thus fixes the blade in the rotor.

Ein bekannter Klemmriegel dieser Art (DE-PS 23 56 226) be­steht aus einem gegossenen Klemmriegelkörper, der einen ge­radlinigen Armteil aufweist, dessen ebene Außenseite im ein­gebauten Zustand des Klemmriegels der Rückseite der Schaufel zugewandt ist und im Bereich des Ansatzes der Schaufelrück­seite eine auf diesen auflegbare Schrägfläche aufweist. Der Armteil geht in diesem Bereich in einen teilzylindrisch ge­wölbten Armansatz über, und Armteil und Armansatz sind mit ebenfalls teilzylindrischen Flächen ausgestattet, die den die Scheiben des Rotors verbindenden Zylinderbolzen umfassen. Seitlich sind in dem Armteil Absätze und in dem gewölbten Armansatz der Wölbung folgende Nuten zur Aufnahme der Bügel­feder eingelassen. Der u-förmige Bogen der Bügelfeder beauf­schlagt im eingebauten Zustand des Klemmriegels die Schaufel­rückseite, und die beiden Federenden sind, in die seitlichen Absätze und Nuten eingelegt, bogenförmig bis an das Ende des gewölbten Absatzes, der Wölbung folgend, eingelegt und jeweils doppelwinklig abgebogen, an am Ende des Armansatzes vorge­sehenen Nocken anliegend festgelegt.A known clamp bolt of this type (DE-PS 23 56 226) consists of a cast clamp body, which has a rectilinear arm part, the flat outside facing the back of the blade in the installed state of the clamp bolt and in the area of the approach of the back of the blade one that can be placed thereon Inclined surface. In this area, the arm part merges into a partially cylindrically curved arm attachment, and the arm part and arm attachment are also equipped with partially cylindrical surfaces which encompass the cylinder bolt connecting the disks of the rotor. On the side of the arm heels and in the curved arm base of the curvature, the following grooves are inserted to accommodate the bow spring. When the clamp bolt is installed, the U-shaped bow of the bow spring acts on the back of the blade, and the two spring ends, inserted into the side shoulders and grooves, are arched up to the end of the arched heel, following the curvature, and each bent at two angles, attached to cams provided at the end of the arm base.

Obgleich dieser bekannte Klemmriegel sich im praktischen Be­trieb bewährt hat, bringt er bei Herstellung und Anwendung eine Reihe von Nachteilen mit sich. Der aus dem geradlinigen Armteil und dem teilzylindrischen gewölbten Armansatz beste­hende Klemmriegelkörper läßt sich nur in teilbaren Gußformen mit Unter- und Oberkasten gießen, wobei die Guß-Teilebene ra­dial mittig zu dem gewölbten Armansatz verläuft. Der gegos­sene Körper erfordert deshalb verhältnismäßig viel Putzar­beit, da die entstehenden Gußgrate, insb. innerhalb des ge­wölbten Armansatzes schwer zugänglich sind. Der gebogene Teil der in die Nuten des gewölbten Armansatzes einzulegende ent­sprechend gebogene Teil der Bügelfeder erlaubt nur geringe Toleranzabweichungen, da er sonst schwer in die Nuten einzu­legen ist. Wenn sich, was beim Strahlbetrieb unvermeidbar ist, zwischen die Feder und die Nutwände Strahlmittelrückstände festsetzen, wird der bewegliche, die Schaufelrückseite beauf­schlagende Federteil verkürzt und damit die Wirkung der Feder beeinträchtigt. Bei einem Bruch des die Schaufelrückseite be­aufschlagenden Federbogens fallen die entstehenden beiden Federreststücke häufig aus den Nuten des Klemmriegelkörpers heraus, und das dadurch bedingte Lösen des Klemmriegels und der Festlegung der Schaufel im Rotor führt zu erheblichen Be­triebsstörungen.Although this known clamp bolt has proven itself in practical operation, it has a number of disadvantages in its manufacture and use. The clamping bolt body consisting of the straight arm part and the partially cylindrical, curved arm attachment can only be cast in divisible casting molds with lower and upper boxes, the partial casting plane running radially in the center of the curved arm attachment. The cast body therefore requires a relatively large amount of cleaning work, since the resulting burrs, particularly within the curved arm base, are difficult to access. The curved part of the correspondingly curved part of the bow spring to be inserted into the grooves of the arched arm attachment permits only slight tolerance deviations, since it is otherwise difficult to insert into the grooves. If blasting agent residues get stuck between the tongue and the groove walls, which is unavoidable during blasting operation, the movable spring part acting on the back of the blade is shortened and the effect of the tongue is thus impaired. If the spring arch acting on the back of the blade breaks, the resulting two spring remnants often fall out of the grooves of the clamping bolt body, and the resulting loosening of the clamping bolt and the fixing of the blade in the rotor lead to considerable malfunctions.

Der Erfindung liegt die Aufgabe zugrunde, die vorstehend auf­gezählten Nachteile zu beseitigen. Diese Aufgabe wird da­durch gelöst, daß der Klemmriegelkörper ein L-förmiges Win­kelstück bildet, das etwa rechtwinklig aufeinander zu verlau­fende und in eine auf den Ansatz der Schaufel auflegbare Schrägfläche auslaufende ebene Außenflächen aufweist. DieseThe invention has for its object to eliminate the disadvantages listed above. This object is achieved in that the clamping bolt body forms an L-shaped angle piece which has approximately flat outer surfaces which run approximately at right angles to one another and run out into an inclined surface which can be placed on the shoulder of the blade. These

Ausbildungsform erlaubt es, den Klemmriegelkörper ohne Guß-­Teilebene zu gießen, da eine der ebenen Außenflächen des Klemmriegelkörpers die Formoberseite bilden kann; es ergibt sich dabei der weitere Vorteil eines erheblich geringeren Raum­bedarfes des Gußkörpers in der Form. Für die Bearbeitung nach dem Guß sind lediglich außenliegende ebene Flächen zu schlei­fen.Form of embodiment allows the clamping bar body to be cast without a partial casting plane, since one of the flat outer surfaces of the clamping bar body can form the top of the mold; there is the further advantage of a considerably smaller space requirement of the cast body in the mold. For processing after casting, only external flat surfaces need to be sanded.

Nur der, im eingebauten Zustand des Klemmriegels der Schaufel­rückseite abgewandte L-Arm des so gegossenen L-förmigen Win­kelstücks kann, wie die Erfindung weiter vorsieht, seitliche Absätze zur Aufnahme der Seiten und am freien Ende eine eck- oder halbbogenförmige Nut zur Aufnahme des Bogens der Bügel­feder aufweisen mit der Wirkung, daß Federn mit erheblich ge­ringerer Toleranzgenauigkeit verwendet werden können. Die Bü­gelfeder kann dann, wie die Erfindung weiter vorsieht, ein Federaugenpaar aufweisen, das auf seitliche Nockenansätze des im eingebauten Zustand der Schaufelrückseite zugewandten L-­Armes des Klemmriegelkörpers aufsteckbar ist, so daß die bei­den freien Enden und nicht der Bogen der Bügelfeder die Schau­felrückseite beaufschlagen. Diese freien Enden können im ein­gebauten Zustand des Klemmriegels von der Schaufelrückseite weg winklig abgebogen sein. Das Federaugenpaar verlängert da­bei den Federweg erheblich, und bei einem etwaigen Bruch eines oder beider Federenden bleibt die Riegelwirkung des Klemmrie­gels für die Rotorschaufel erhalten, da die verbleibenden Reste der Federenden die Schaufelrückseite nach wie vor beaufschla­gen.Only the L-arm of the thus cast L-shaped contra-angle, which faces away in the installed state of the locking bar on the back of the blade, can, as the invention further provides, lateral shoulders for receiving the sides and at the free end a corner or semicircular groove for receiving the arc of the Bow springs have the effect that springs with significantly lower tolerance accuracy can be used. The bow spring can then, as the invention further provides, have a pair of spring eyes which can be plugged onto lateral cam lugs of the L-arm of the clamping bolt body facing the back of the blade in the installed state, so that the two free ends and not the bow of the bow spring act on the back of the blade. These free ends can be bent away from the back of the blade in the installed state of the locking bolt. The pair of spring eyes extends the spring travel considerably, and if one or both spring ends break, the locking action of the locking bolt for the rotor blade is retained, since the remaining remnants of the spring ends still act on the rear of the blade.

Die Erfindung wird anhand des in der Zeichnung dagestellten Ausführungsbeispieles näher erläutert. Die Zeichnung zeigt in

  • Fig. 1 den Klemmriegel im eingebauten Zustand von der Seite gesehen und in
  • Fig. 2 die Seitenansicht von Fig. 1.
The invention is explained in more detail with reference to the embodiment shown in the drawing. The drawing shows in
  • Fig. 1 seen the clamp bolt in the installed state from the side and in
  • FIG. 2 shows the side view of FIG. 1.

Der Klemmriegelkörper besteht aus einem L-förmigen Winkel­stück mit den L-Armen 1 und 2, von denen L-Arm 1 der mit 3 bezeichneten Schaufel des nicht dargestellten Rotors zuge­wandt und L-Arm 2 abgewandt ist. Die beiden ebenen Außenflä­chen 1a und 2a der L-Arme 1 und 2 laufen aufeinander zu in eine Schrägfläche 4 aus, die auf den Ansatz 3a der Schaufel 3 aufgelegt ist. Rückseitig stützt sich der L-Arm 1 mit einer teilzylindrischen Fläche 1c gegen den die nicht dargestell­ten Rotorscheiben verbindenden Zylinderbolzen 5 ab. Der L-­Arm 2 der breiter als der L-Arm 1 bemessen ist, bildet damit beidseitig Absätze und an seinem Ende eine Ecknut 2c. In diese wird die Bügelfeder 6 mit ihrem Bogen 6a und den anschließen­den Federarmen 6b eingelegt, die im Bereich der Schrägfläche 4 in Federaugen 6c übergehen, die auf die Nockenansätze 1d des L-Arms 1 aufgesteckt sind und in die Federenden 6d aus­laufen, die von der Rückseite der Schaufel 3 weggebogen sind.The clamp bolt body consists of an L-shaped angle piece with the L-arms 1 and 2, of which L-arm 1 faces the blade designated 3 of the rotor, not shown, and L-arm 2 faces away. The two flat outer surfaces 1a and 2a of the L-arms 1 and 2 run towards each other into an inclined surface 4 which is placed on the shoulder 3a of the blade 3. On the back, the L-arm 1 is supported with a partially cylindrical surface 1c against the cylinder bolt 5 connecting the rotor disks, not shown. The L-arm 2, which is wider than the L-arm 1, thus forms shoulders on both sides and a corner groove 2c at its end. In this the bow spring 6 is inserted with its bow 6a and the subsequent spring arms 6b, which merge in the area of the inclined surface 4 in spring eyes 6c, which are attached to the cam lugs 1d of the L-arm 1 and run into the spring ends 6d, which from the Back of the blade 3 are bent away.

Wie ersichtlich, kann beim Guß des Klemmriegelkörpers so ver­fahren werden, daß die Unterseite des L-Arms 2 beim Guß in der Ebene der Formoberseite liegt, so daß keine geteilte Form benötigt wird. Der Bogen 6a der Bügelfeder 6 liegt vor Strahl­mittelbeaufschlagung geschützt und steht mit der Rückseite der Schaufel 3 nicht in Verbindung. Im anschließenden Verlauf kann die Feder 6 durch Strahlmittelreste nicht verklemmt werden, da die Absätze des L-Arms 2, die die Feder führen, seitlich und nach oben offen sind. Die Federenden 6d sind nicht geführt; sie bewegen sich längs der beiden Seiten des L-Arms 1, das gleiche gilt für die Federaugen 6c, die nur lose auf die Nok­kenansätze 1d aufgesteckt sind.As can be seen, the clamping bar body can be cast in such a way that the underside of the L-arm 2 lies in the plane of the mold top when cast, so that a split mold is not required. The arch 6a of the bow spring 6 is protected against blasting agent exposure and is not connected to the back of the blade 3. In the subsequent course, the spring 6 cannot be jammed by the remnants of the blasting agent, since the shoulders of the L-arm 2, which guide the spring, are open laterally and upwards. The spring ends 6d are not guided; they move along the two sides of the L-arm 1, the same applies to the spring eyes 6c, which are only loosely attached to the cam lugs 1d.

Claims (4)

1. Klemmriegel für die Wurfschaufeln von Scheibenrotoren in Strahl- bzw. Zerkleinerungsvorrichtungen, deren Sei­tenkanten in radiale Nuten der Scheiben einschiebbar sind, wobei der Klemmriegel, abgestützt gegen einen die Scheiben verbindenden Zylinderbolzen und gegen einen An­satz an der Schaufelrückseite Nuten mit einer in diese einsetzbaren Bügelfeder aufweist, deren eines Ende gegen den Klemmriegel festgelegt ist und damit die Schaufel im Scheibenrotor festlegt,
dadurch gekennzeichnet,
daß der Klemmriegelkörper ein L-förmiges Winkelstück bil­det, das etwa rechtwinklig aufeinander zu verlaufende und in eine, auf den Ansatz (3a) der Schaufel (3) auflegbare Schrägfläche (4) auslaufende, ebene Auflageflächen (1a, 2a) aufweist.1.Clamping bar for the throwing blades of disk rotors in jet or comminution devices, the side edges of which can be inserted into radial grooves of the disks, the clamping bar being supported against a cylinder bolt connecting the disks and against an attachment on the back of the blades with a tongue spring insertable therein one end of which is fixed against the clamp bolt and thus fixes the blade in the disc rotor,
characterized,
that the locking bolt body forms an L-shaped angle piece, which has approximately perpendicular to each other and in a, on the shoulder (3a) of the blade (3) sloping surface (4) tapering, flat support surfaces (1a, 2a). 2. Klemmriegel nach Anspruch 1,
dadurch gekennzeichnet,
daß der im eingebauten Zustand der Rückseite der Schaufel (3) abgewandte L-Arm (2) seitlich Absätze (2c) zur Auf­nahme der Seiten und am freien Ende eine Eck- oder Rund­nut (2c) zur Aufnahme des Bogens (6a) der Bügelfeder (6) aufweist.2. clamp bolt according to claim 1,
characterized,
that the L-arm (2) facing away from the side of the blade (3) in the installed state of the rear of the blade (3) for receiving the sides and at the free end a corner or round groove (2c) for receiving the arc (6a) of the bow spring ( 6). 3. Klemmriegel nach den Ansprüchen 1 und/oder 2,
dadurch gekennzeichnet,
daß die Bügelfeder (6) ein Federaugenpaar (6c) aufweist, das auf seitliche Nockenansätze (1d) des im eingebauten Zustand der Rückseite der Schaufel (3) zugewandten L-Arms (1) aufsteckbar ist, und daß die beiden freien Enden (6d) der Bügelfeder (6) die Rückseite der Schaufel (3) be­aufschlagen.3. clamp bolt according to claims 1 and / or 2,
characterized,
that the bow spring (6) has a pair of spring eyes (6c) which can be plugged onto lateral cam lugs (1d) of the L-arm (1) facing the rear of the blade (3) in the installed state, and that the two free ends (6d) the bow spring (6) act on the back of the bucket (3). 4. Klemmriegel nach Anspruch 3,
dadurch gekennzeichnet,
daß die freien Enden (6d) der Bügelfeder (6) in deren eingesetztem Zustand von der Rückseite der Schaufel (3) weg winklig abgebogen sind.4. clamp bolt according to claim 3,
characterized,
that the free ends (6d) of the bow spring (6) are bent at an angle away from the back of the blade (3) in their inserted state.
EP89116637A 1988-09-12 1989-09-08 Clamping-bar for the rotor blades of impeller wheels in blasting or crushing devices Ceased EP0359143A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883830927 DE3830927A1 (en) 1988-09-12 1988-09-12 CLAMP BAR FOR THE THROWING BLADES OF DISC ROTORS IN JET OR CRUSHING DEVICES
DE3830927 1988-09-12

Publications (2)

Publication Number Publication Date
EP0359143A2 true EP0359143A2 (en) 1990-03-21
EP0359143A3 EP0359143A3 (en) 1990-05-09

Family

ID=6362760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116637A Ceased EP0359143A3 (en) 1988-09-12 1989-09-08 Clamping-bar for the rotor blades of impeller wheels in blasting or crushing devices

Country Status (2)

Country Link
EP (1) EP0359143A3 (en)
DE (1) DE3830927A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11826882B1 (en) * 2022-12-27 2023-11-28 Paul Enegren Blast wheel and quick-connect blade assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912242A (en) * 1958-04-03 1962-12-05 William Robertson Macmillan Improvements in or relating to blade retaining means in shot blast impeller wheels
FR2185950A5 (en) * 1972-05-26 1974-01-04 Berger Maschf Gmbh
FR2250610A2 (en) * 1973-11-10 1975-06-06 Berger Maschf Gmbh
US3936979A (en) * 1974-10-10 1976-02-10 Benfur Engineering Company Particle-releasing mounting system for the blades of blasting machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912242A (en) * 1958-04-03 1962-12-05 William Robertson Macmillan Improvements in or relating to blade retaining means in shot blast impeller wheels
FR2185950A5 (en) * 1972-05-26 1974-01-04 Berger Maschf Gmbh
FR2250610A2 (en) * 1973-11-10 1975-06-06 Berger Maschf Gmbh
US3936979A (en) * 1974-10-10 1976-02-10 Benfur Engineering Company Particle-releasing mounting system for the blades of blasting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11826882B1 (en) * 2022-12-27 2023-11-28 Paul Enegren Blast wheel and quick-connect blade assembly

Also Published As

Publication number Publication date
DE3830927A1 (en) 1990-03-15
EP0359143A3 (en) 1990-05-09

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