EP0727282B1 - Apparatus and method for sandblasting bore- and tube-walls - Google Patents

Apparatus and method for sandblasting bore- and tube-walls Download PDF

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Publication number
EP0727282B1
EP0727282B1 EP96810032A EP96810032A EP0727282B1 EP 0727282 B1 EP0727282 B1 EP 0727282B1 EP 96810032 A EP96810032 A EP 96810032A EP 96810032 A EP96810032 A EP 96810032A EP 0727282 B1 EP0727282 B1 EP 0727282B1
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EP
European Patent Office
Prior art keywords
pipe
rotor
air
end piece
abrasive material
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Expired - Lifetime
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EP96810032A
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German (de)
French (fr)
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EP0727282A1 (en
Inventor
Silvano Keller
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Oerlikon Metco AG
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Sulzer Metco AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes

Definitions

  • the present invention relates to a device for sandblasting of bore and pipe walls according to the generic term of claim 1, a method for sandblasting drilling and Pipe walls according to the preamble of the claim 12, as well as the use of an application device for sandblasting (Claim 17), with the construction of an assembly one of the Application device known from DE-A-3336873.
  • sandblasting should not only do that Blasting of surfaces with sand can be understood, but the The term “sandblasting” is intended to represent everything Blasting with abrasive grit can be understood.
  • DE-AS 1 142 298 describes a device for sandblasting the inner surface of pipes.
  • This device has an inner supply pipe for the compressed air and a concentric one arranged outer tube for the supply of the Blasting material on.
  • the two pipes open at the front an annular discharge nozzle.
  • the compressed air is distributed evenly on all sides Deflected 90 °.
  • Slits are provided through which the redirected compressed air Grit is fed.
  • the air-sand mixture thus formed emerges from the nozzle in the form of an annular jacket and strikes perpendicular to the inside surface of the one to be blasted Pipe on.
  • the disadvantage of this device is that the nozzle through the Blasting material very much in the area of the slots and the outlet opening is heavily used and subject to high wear. Since the wear of such nozzles is also not symmetrical, the inner surface to be blasted is not uniform blasted. Another disadvantage of this device is in the fact that, due to the large outlet cross-section, Pressure drop arises, causing the air speed at the exit the nozzle is comparatively small. This causes that the maximum, kinetic energy, which a single, by the grain of sand has moving air, is relatively small. Finally, there is another disadvantage of this device to see that it is not possible to see only the worn part replace, but that always replaced the entire device must become. The angle of incidence of the blasting material on the radiant wall cannot be varied.
  • Preferred embodiments of the device are in the dependent Claims 2 to 11 defined.
  • the central feed pipe for the blasting material is non-rotatable to train. This ensures that, as is known transition from stationary to connected with great difficulty on a rotating part in the blasting material feed pipe falls away.
  • a preferred embodiment of the device is modular trained end piece releasably supported on the second tube in front. By replacing this end piece, certain Beam parameters can be changed. For example, the deflection angle of the blasting material as well as the jet shape through various trained end pieces are influenced.
  • Another object of the invention is a method for sandblasting of bore and pipe walls according to Propose the preamble of claim 12, by means of which the Borehole and pipe walls easily and evenly can be blasted.
  • Preferred embodiments of the method are in the dependent Claims 13 to 16 circumscribed.
  • the device shown in Fig. 1 essentially has a central feed pipe 1 for the blasting material, a connecting element 2, consisting of a stator 3 and a rotor 4, and a feed pipe arranged on the rotor 4 of the connection element 2 5 for compressed air.
  • An electric motor is used to drive the rotor 4 6 provided.
  • the stator 3 of the connection element 2 has an essentially cylindrical housing 8, while the rotor 4th essentially by an approximately T-shaped cross-section Body 10 is formed.
  • the rotor 4 is over two Bearings 11, 12 supported on the housing 8, whereby it is made down protrudes the housing 8.
  • a groove 13 in the upper side Embedded rotor 4 through which together with the housing 8th an upper, annular cavity 14 is formed.
  • this groove 13 is the housing 8 with a radial through the wall of the housing 8 leading through hole 15 provided.
  • this feed pipe 5 for compressed air arranged, this feed pipe 5 with the lower Cavity 18 of the rotor 4 is connected.
  • the feed pipe 5 runs essentially parallel to the feed pipe 1 for blasting material and is on the bottom with an approximately 80 ° to the stationary Provide tube 1 bent end piece 20.
  • the mouth 21 this end piece 20 is beyond, i.e. in the drawing below the outlet opening 22 of the stationary tube 1.
  • the rotatable supply pipe 5 for compressed air is in the lower area End via a cuff 23 serving as storage stationary tube 1 supported.
  • a cuff 23 serving as storage stationary tube 1 supported.
  • the bent end piece 20 is releasably attached to the supply pipe 5 for compressed air. Will this Loosened screw connection 24, the end piece 20 can be removed and be exchanged for another.
  • FIG. 2 shows a section along the line A-A in FIG. 1 the sleeve 23, which the storage of the feed tube 5 for Compressed air on the stationary pipe 1 and the attachment of the end piece 20 on the feed pipe 5 is used.
  • the housing 8 is provided with a flange 26, which has a central bore 27.
  • the central tube 1 for the supply of the blasting material by means of two setscrews 28 fixed in a rotationally fixed manner.
  • the central Tube 1 is arranged so that its longitudinal axis 7 with the Rotation axis of the rotor 4, and thus also the feed pipe 5 for Compressed air, collapses. This enables a symmetrical Distribution of the blasting material when operating the device.
  • a pneumatic drive can be provided.
  • a pneumatic drive medium could be used for distraction and acceleration of the blasting material used.
  • the stationary feed pipe 1 for the blasting material can be on the top via a hose connection to the storage container for blasting material. Both the hose connection like the storage container are in favor of a clear Representation not shown.
  • the compressed air required for the actual blasting process is via a line, not shown here, into the housing 8 leading, radial connection bore 15 fed from where it flows into the upper annular space 14. Arrived from the upper annular space 14 the compressed air via those admitted into the rotor 4 Longitudinal bores 17 in the lower annular space 18 and from there in the feed pipe 5 attached to the rotor 4. At the end of this feed pipe 5 the compressed air escapes through the bent end piece 20, in such a way that it exits from the stationary feed pipe 1 Deflects and accelerates the blasting material in the direction of the air jet.
  • the blasting material itself is, as mentioned above, from a storage container via a hose connection to the stationary, central feed pipe 1 supplied, from which it is the outlet opening 22 exits.
  • the blasting material is fed usually by a carrier gas, for example air, whereby the device is not only shown in the here vertical but can be used in any position.
  • a carrier gas for example air
  • the device By rotating the rotor 4, and thus the compressed air supply pipe 5 and its end piece 20 about the central axis 7 the device is made transverse to the axis of rotation 7 of the rotor 4 air jet emerging with respect to the rotatable feed pipe the mouth opening 21 of the end piece 20 circularly around the rotor axis of rotation 7 moves.
  • the blasting material will exit after exiting the central feed pipe 1 transverse to the axis of rotation 7 of the rotor 4 deflected and accelerated in the direction of the wall to be blasted. In this way, bore and pipe walls can be blasted become.
  • the wall is fixed, that which emerges from the feed pipe Blasting material through the air jet preferably by 50 ° to 70 ° deflected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Spray Control Apparatus (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Coating With Molten Metal (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The device has a first tube (1) for supplying the spray material and a second tube (5) for supplying compressed air. The second tube rotates about the longitudinal centre axis (7) of the first tube. The mouth (21) of the end piece (20) of the second tube is set in the flow direction after the outlet opening (22) of the first tube so that the air stream from the end piece deflects the flow of sand material emerging from the first tube. The first tube can be rotationally secured and is straight at least in its outlet end area. The angled end piece can be modular to fit detachably on the second tube. An electric or pneumatic drive unit is provided for driving the second tube.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Sandstrahlen von Bohrungs- und Rohrwandungen gemäss dem Oberbegriff des Anspruchs 1, ein Verfahren zum Sandstrahlen von Bohrungs- und Rohrwandungen gemäss dem Oberbegriff des Anspruchs 12, sowie die Verwendung einer Auftragsvorrichtung zum Sandstrahlen (Anspruch 17), mit der Konstruktion einer Baugruppe einer aus der DE-A-3336873 bekannten Auftragsvorrichtung.The present invention relates to a device for sandblasting of bore and pipe walls according to the generic term of claim 1, a method for sandblasting drilling and Pipe walls according to the preamble of the claim 12, as well as the use of an application device for sandblasting (Claim 17), with the construction of an assembly one of the Application device known from DE-A-3336873.

Unter "Sandstrahlen" soll im vorliegenden Fall nicht nur das Strahlen von Flächen mit Sand verstanden werden, sondern der Begriff "Sandstrahlen" soll stellvertretend für sämtliches Strahlen mit abrasiv wirkendem Strahlgut verstanden werden.In the present case, "sandblasting" should not only do that Blasting of surfaces with sand can be understood, but the The term "sandblasting" is intended to represent everything Blasting with abrasive grit can be understood.

Zum Sandstrahlen von Bohrungs- und Rohrwandungen sind verschiedene Vorrichtungen bekannt und im Einsatz. Da die Problematik sowohl bei Bohrungswandungen wie auch bei Rohrinnenwandungen jeweils dieselbe ist, beschränken sich die nachfolgenden Ausführungen jeweils auf Bohrungswandungen. Die Schwierigkeit beim Sandstrahlen von Bohrungswandungen besteht darin, dass die Vorrichtung von der Öffnung der Bohrung her in Richtung deren Längsmittelachse in diese eingeführt werden muss. Das Strahlgut soll jedoch unter einem Winkel auf die zu strahlende Wandung der Bohrung auftreffen; üblicherweise beträgt der Winkel zwischen 30° und 90° relativ zur Längsmittelachse der Bohrung. Um dies zu erreichen, muss die Vorrichtung Mittel aufweisen, welche das Strahlgut gegenüber der Längsmittelachse der Bohrung um den vorerwähnten Winkel umlenken. Da das bewegte Strahlgut definitionsgemäss jedoch abrasiv wirkt, unterliegen die bekannten Vorrichtung im Umlenkbereich des Strahlguts einem starken Verschleiss.There are various methods for sandblasting bore and pipe walls Devices known and in use. Because the problem for both bore walls and inner tube walls is the same, the following statements are limited each on bore walls. The difficulty with Sandblasting of bore walls consists of the device from the opening of the bore towards it Longitudinal central axis must be inserted into this. The grit however, it should be at an angle to the wall to be blasted hit the hole; usually the angle is between 30 ° and 90 ° relative to the longitudinal central axis of the bore. Around To achieve this, the device must have means which the blasting material in relation to the longitudinal central axis of the bore redirect the aforementioned angle. Because the moving grit is by definition however, is known to be abrasive Device in the deflection area of the blasting material is subject to heavy wear.

Eine weitere Schwierigkeit beim Sandstrahlen von Bohrungswandungen besteht darin, dass die Wandung gleichmässig gestrahlt werden muss. Da das Strahlgut die Vorrichtung im allgemeinen in Form eines nur einen begrenzten Flächenbereich beaufschlagenden Strahles verlässt, bedeutet dies, dass sich, neben einer eventuell erforderlichen, relativen Längsbewegung entlang der Bohrungsmittelachse, entweder der Körper, in den die zu strahlende Bohrung eingelassen ist, oder die Sandstrahlvorrichtung selbst auch um die Längsmittelachse der jeweiligen Bohrung rotieren muss. Beiden Vorgehensweisen haften jedoch unter Umständen schwerwiegende Nachteile an:

  • Um den zu strahlenden Körper um die Längsmittelachse der zu strahlenden Bohrung bzw. Wandung rotieren zu können, sind aufwendige Einrichtungen notwendig. Fest verankerte, eingebaute oder sehr grosse Körper können zudem überhaupt nicht rotiert werden. Weist ein Körper mehrere Bohrungen auf, deren Wandungen zu strahlen sind, müssen diese, nach jeweiligem Umspannen des Körpers, nacheinander gestrahlt werden, da der zu strahlende Körper jeweils um das Zentrum der zu strahlenden Bohrung bzw. Wandung rotiert werden muss. Aus diesem Grunde ist es nicht möglich, gleichzeitig die Wandungen von mehreren Bohrungen zu strahlen.
  • Eine Sandstrahlvorrichtung derart auszugestalten, dass der austretende Strahl um eine Mittelachse rotiert, bringt grosse Dichtungsprobleme mit sich, da das Strahlgut bzw. Staubpartikel davon einer in einem solchen Fall zwingend erforderlichen Drehlagerung der Vorrichtung stark zusetzen, wodurch diese einem hohen Verschleiss ausgesetzt ist.
Another difficulty with sandblasting bore walls is that the wall has to be blasted evenly. Since the blasting material generally leaves the device in the form of a beam which only acts on a limited area, this means that, in addition to a possibly required relative longitudinal movement along the axis of the bore, either the body into which the bore to be blasted is inserted or the Sandblasting device itself must also rotate about the longitudinal central axis of the respective bore. However, both approaches may have serious disadvantages:
  • In order to be able to rotate the body to be blasted about the longitudinal center axis of the bore or wall to be blasted, complex devices are necessary. Firmly anchored, built-in or very large bodies cannot be rotated at all. If a body has several bores, the walls of which are to be blasted, these must be blasted one after the other, after each reclamping of the body, since the body to be blasted must be rotated in each case around the center of the bore or wall to be blasted. For this reason it is not possible to blast the walls of several holes at the same time.
  • Designing a sandblasting device in such a way that the emerging jet rotates about a central axis brings with it great sealing problems, since the blasting material or dust particles thereof strongly clog the rotating bearing of the device which is absolutely necessary in such a case, as a result of which it is exposed to high wear.

Aus der DE-AS 1 142 298 ist eine Vorrichtung zur Sandbestrahlung der Innenfläche von Rohren bekannt. Diese Vorrichtung weist ein inneres Zufuhrrohr für die Druckluft und ein konzentrisch dazu angeordnetes, äusseres Rohr für die Zufuhr des Strahlguts auf. Die beiden Rohre münden an ihrer Vorderseite in einer ringförmig ausgebildeten Austrittsdüse. In dieser Austrittsdüse wird die Druckluft gleichmässig nach allen Seiten um 90° umgelenkt. Im Bereich der Austrittsdüse sind ringförmig angeordnete Schlitze vorgesehen, über die der umgelenkten Druckluft Strahlgut zugeführt wird. Das so gebildete Luft-Sand-Gemisch tritt in Form eines ringförmigen Mantels aus der Düse aus und trifft senkrecht auf der Innenfläche des zu strahlenden Rohres auf.DE-AS 1 142 298 describes a device for sandblasting the inner surface of pipes. This device has an inner supply pipe for the compressed air and a concentric one arranged outer tube for the supply of the Blasting material on. The two pipes open at the front an annular discharge nozzle. In this outlet nozzle the compressed air is distributed evenly on all sides Deflected 90 °. In the area of the outlet nozzle there are rings Slits are provided through which the redirected compressed air Grit is fed. The air-sand mixture thus formed emerges from the nozzle in the form of an annular jacket and strikes perpendicular to the inside surface of the one to be blasted Pipe on.

Nachteilig bei dieser Vorrichtung ist, dass die Düse durch das Strahlgut im Bereich der Schlitze und der Austrittsöffnung sehr stark beansprucht wird und einem hohen Verschleiss unterliegt. Da die Abnutzung solcher Düsen zudem nicht symmetrisch verläuft, wird die zu strahlende Innenfläche nicht gleichmässig gestrahlt. Ein weiterer Nachteil dieser Vorrichtung besteht darin, dass durch den grossen Austrittsquerschnitt ein hoher Druckabfall entsteht, wodurch die Luftgeschwindigkeit am Ausgang der Düse vergleichsweise gering ist. Dies bewirkt, dass die maximale, kinetische Energie, welche ein einzelnes, durch den Luftstrahl bewegtes Sandkorn aufweist, relativ klein ist. Schliesslich ist ein weiterer Nachteil dieser Vorrichtung darin zu sehen, dass es nicht möglich ist, nur das abgenützte Teil auszuwechseln, sondern dass immer die gesamte Vorrichtung ersetzt werden muss. Der Auftreffwinkel des Strahlguts auf die zu strahlende Wandung kann zudem nicht variiert werden.The disadvantage of this device is that the nozzle through the Blasting material very much in the area of the slots and the outlet opening is heavily used and subject to high wear. Since the wear of such nozzles is also not symmetrical, the inner surface to be blasted is not uniform blasted. Another disadvantage of this device is in the fact that, due to the large outlet cross-section, Pressure drop arises, causing the air speed at the exit the nozzle is comparatively small. This causes that the maximum, kinetic energy, which a single, by the grain of sand has moving air, is relatively small. Finally, there is another disadvantage of this device to see that it is not possible to see only the worn part replace, but that always replaced the entire device must become. The angle of incidence of the blasting material on the radiant wall cannot be varied.

Es ist somit die Aufgabe der Erfindung, eine Vorrichtung zum Sandstrahlen von Bohrungs- und Rohrwandungen gemäss dem Oberbegriff des Anspruchs 1 derart zu verbessern, dass sie gegenüber bekannten Vorrichtungen einem geringeren Verschleiss ausgesetzt ist und somit eine wesentlich höhere Standzeit aufweist.It is therefore the object of the invention to provide a device for Sandblasting of bore and pipe walls according to the generic term of claim 1 to improve so that they are known devices exposed to less wear is and therefore has a significantly longer service life.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 aufgeführten Merkmale gelöst.This object is achieved in the characterizing part of claim 1 listed features solved.

Durch ein um die Längsmittelachse des Strahlgut-Zufuhrrohrs herum drehbares Druckluft-Zufuhrrohr, welches am Ende mit einem abgewinkelten Endstück versehen ist, dessen Mündung in Strömungsrichtung nach der Austrittsöffnung des ersten Rohres angeordnet ist, kann das Strahlgut kreisförmig verteilt werden, ohne dass im Strahlgut-Zufuhrrohr Mittel zum Ablenken des Strahlguts vorhanden sein müssen. Durch diese berührungslose Ablenkung des Strahlguts wird die Abnutzung der Sandstrahlvorrichtung im Bereich der Austrittsdüse stark reduziert bzw. weitestgehend verhindert.Through a around the longitudinal central axis of the blasting material feed pipe rotating compressed air supply pipe, which ends with a angled end piece is provided, its mouth in the direction of flow arranged after the outlet opening of the first tube the blasting material can be distributed in a circle without that means for deflecting the blasting material in the blasting material feed pipe must be present. With this non-contact distraction the abrasive becomes wear of the sandblasting device greatly reduced or largely in the area of the outlet nozzle prevented.

Bevorzugte Ausführungsformen der Vorrichtung sind in den abhängigen Ansprüchen 2 bis 11 definiert.Preferred embodiments of the device are in the dependent Claims 2 to 11 defined.

Bei einer bevorzugten Ausführungsform der Vorrichtung ist vorgesehen, das zentrale Zufuhrrohr für das Strahlgut drehfest auszubilden. Dadurch wird erreicht, dass der bekanntermassen mit grossen Schwierigkeiten verbundene Übergang von einem stationären auf einen rotierenden Teil im Strahlgut-Zufuhrrohr wegfällt.In a preferred embodiment of the device, the central feed pipe for the blasting material is non-rotatable to train. This ensures that, as is known transition from stationary to connected with great difficulty on a rotating part in the blasting material feed pipe falls away.

Eine bevorzugte Ausführungsform der Vorrichtung sieht ein modular ausgebildetes, lösbar am zweiten Rohr abgestütztes Endstück vor. Durch den Austausch dieses Endstücks können gewisse Strahlparameter verändert werden. Beispielsweise können der Ablenkwinkel des Strahlguts sowie die Strahlform durch verschiedenartig ausgebildete Endstücke beeinflusst werden.A preferred embodiment of the device is modular trained end piece releasably supported on the second tube in front. By replacing this end piece, certain Beam parameters can be changed. For example, the deflection angle of the blasting material as well as the jet shape through various trained end pieces are influenced.

Eine weitere Aufgabe der Erfindung besteht darin, ein Verfahren zum Sandstrahlen von Bohrungs- und Rohrwandungen gemäss dem Oberbegriff des Anspruchs 12 vorzuschlagen, mittels welchem die Bohrungs- und Rohrwandungen auf einfache Art und Weise gleichmässig gestrahlt werden können.Another object of the invention is a method for sandblasting of bore and pipe walls according to Propose the preamble of claim 12, by means of which the Borehole and pipe walls easily and evenly can be blasted.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 12 aufgeführten Verfahrensschritte und durch die Merkmale des Anspruch 17 gelöst.This object is achieved in the characterizing part of claim 12 process steps listed and solved by the features of claim 17.

Bevorzugte Ausführungsformen des Verfahrens sind in den abhängigen Ansprüchen 13 bis 16 umschrieben.Preferred embodiments of the method are in the dependent Claims 13 to 16 circumscribed.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der beiliegenden Zeichnung näher erläutert, wobei nur auf die im Zusammenhang mit der Erfindung wesentlichen Bestandteile der Vorrichtung eingegangen wird. In dieser Zeichnung zeigen:

Fig. 1
eine Vorrichtung zum Sandstrahlen von Bohrungs- und Rohrwandungen im Längsschnitt, und
Fig. 2
einen Schnitt durch die Vorrichtung entlang der Linie A-A in Fig. 1.
An exemplary embodiment of the invention is explained in more detail below with reference to the accompanying drawing, only the components of the device which are essential in connection with the invention being discussed. In this drawing:
Fig. 1
a device for sandblasting of bore and pipe walls in longitudinal section, and
Fig. 2
a section through the device along the line AA in Fig. 1st

Die in Fig. 1 dargestellte Vorrichtung weist im wesentlichen ein zentrales Zufuhrrohr 1 für das Strahlgut, ein Anschlusselement 2, bestehend aus eine Stator 3 und einem Rotor 4, sowie ein am Rotor 4 des Anschlusselements 2 angeordnetes Zufuhrrohr 5 für Druckluft auf. Zum Antrieb des Rotors 4 ist ein Elektromotor 6 vorgesehen. The device shown in Fig. 1 essentially has a central feed pipe 1 for the blasting material, a connecting element 2, consisting of a stator 3 and a rotor 4, and a feed pipe arranged on the rotor 4 of the connection element 2 5 for compressed air. An electric motor is used to drive the rotor 4 6 provided.

Der Stator 3 des Anschlusselements 2 weist ein im wesentlichen zylindrisch ausgebildetes Gehäuse 8 auf, währenddem der Rotor 4 im wesentlichen durch einen im Querschnitt etwa T-förmig ausgestalteten Körper 10 gebildet wird. Der Rotor 4 ist über zwei Lager 11, 12 am Gehäuse 8 abgestützt, wobei er nach unten aus dem Gehäuse 8 hinausragt. Für die Zufuhr von Druckluft vom Stator 3 zum Rotor 4 ist auf der oberen Seite eine Nut 13 in den Rotor 4 eingelassen, durch welche zusammen mit dem Gehäuse 8 ein oberer, ringförmiger Hohlraum 14 gebildet wird. Auf der Höhe dieser Nut 13 ist das Gehäuse 8 mit einer radialen, durch die Wandung des Gehäuses 8 hindurchführenden Anschlussbohrung 15 versehen. Von der Rotor-Nut 13 führt eine Mehrzahl von Längsbohrungen 17 durch den Rotor 4 hindurch zu einem unteren, ringförmigen, in den Rotor 4 eingelassenen Hohlraum 18.The stator 3 of the connection element 2 has an essentially cylindrical housing 8, while the rotor 4th essentially by an approximately T-shaped cross-section Body 10 is formed. The rotor 4 is over two Bearings 11, 12 supported on the housing 8, whereby it is made down protrudes the housing 8. For the supply of compressed air from the stator 3 to the rotor 4 is a groove 13 in the upper side Embedded rotor 4, through which together with the housing 8th an upper, annular cavity 14 is formed. At the height this groove 13 is the housing 8 with a radial through the wall of the housing 8 leading through hole 15 provided. A plurality of leads from the rotor groove 13 Longitudinal bores 17 through the rotor 4 to a lower, annular cavity 18 embedded in the rotor 4.

An der Unterseite des Rotors 4 ist das Zufuhrrohr 5 für Druckluft angeordnet, wobei dieses Zufuhrrohr 5 mit dem unteren Hohlraum 18 des Rotors 4 verbunden ist. Das Zufuhrrohr 5 verläuft im wesentlichen parallel zum Zufuhrrohr 1 für Strahlgut und ist auf der Unterseite mit einem um ca. 80° zum stationären Rohr 1 hin abgebogenen Endstück 20 versehen. Die Mündung 21 dieses Endstücks 20 befindet sich jenseits, d.h. in der Zeichnung unterhalb der Austrittsöffnung 22 des stationären Rohrs 1.At the bottom of the rotor 4 is the supply pipe 5 for compressed air arranged, this feed pipe 5 with the lower Cavity 18 of the rotor 4 is connected. The feed pipe 5 runs essentially parallel to the feed pipe 1 for blasting material and is on the bottom with an approximately 80 ° to the stationary Provide tube 1 bent end piece 20. The mouth 21 this end piece 20 is beyond, i.e. in the drawing below the outlet opening 22 of the stationary tube 1.

Das drehbare Zufuhrrohr 5 für Druckluft ist im Bereich des unteren Endes über eine als Lagerung dienende Manschette 23 am stationären Rohr 1 abgestützt. Im Bereich dieser Manschette 23 ist das abgebogene Endstück 20 mittels einer Schraubverbindung 24 am Zufuhrrohr 5 für Druckluft lösbar befestigt. Wird diese Schraubverbindung 24 gelöst, kann das Endstück 20 entfernt und gegen ein anderes ausgetauscht werden.The rotatable supply pipe 5 for compressed air is in the lower area End via a cuff 23 serving as storage stationary tube 1 supported. In the area of this cuff 23 is the bent end piece 20 by means of a screw connection 24 releasably attached to the supply pipe 5 for compressed air. Will this Loosened screw connection 24, the end piece 20 can be removed and be exchanged for another.

Fig. 2 zeigt in einem Schnitt entlang der Linie A-A in Fig. 1 die Manschette 23, welche der Lagerung des Zufuhrrohrs 5 für Druckluft am stationären Rohr 1 sowie der Befestigung des Endstücks 20 am Zufuhrrohr 5 dient.FIG. 2 shows a section along the line A-A in FIG. 1 the sleeve 23, which the storage of the feed tube 5 for Compressed air on the stationary pipe 1 and the attachment of the end piece 20 on the feed pipe 5 is used.

Auf der Oberseite ist das Gehäuse 8 mit einem Flansch 26 versehen, der eine zentrale Bohrung 27 aufweist. An diesem Flansch 26 ist das zentrale Rohr 1 für die Zufuhr des Strahlguts mittels zweier Gewindestifte 28 drehfest fixiert. Das zentrale Rohr 1 ist so angeordnet, dass dessen Längsachse 7 mit der Drehachse des Rotors 4, und damit auch des Zufuhrrohrs 5 für Druckluft, zusammenfällt. Dies ermöglicht eine symmetrische Verteilung des Strahlguts beim Betrieb der Vorrichtung.On the top, the housing 8 is provided with a flange 26, which has a central bore 27. On this flange 26 is the central tube 1 for the supply of the blasting material by means of two setscrews 28 fixed in a rotationally fixed manner. The central Tube 1 is arranged so that its longitudinal axis 7 with the Rotation axis of the rotor 4, and thus also the feed pipe 5 for Compressed air, collapses. This enables a symmetrical Distribution of the blasting material when operating the device.

Im unteren, aus dem Gehäuse 8 herausragenden Bereich 19 ist der Rotor 4 mit einer Zahnscheibe 30 versehen. Diese Zahnscheibe 30 ist über einen Zahnriemen 31 mit dem schematisch dargestellten Elektromotor 6 verbunden, so dass der Rotor 4 vom Elektromotor 6 angetrieben und in Drehung versetzt werden kann. In the lower area 19 protruding from the housing 8 Provide rotor 4 with a toothed disc 30. This tooth lock washer 30 is via a toothed belt 31 with the schematically shown Electric motor 6 connected so that the rotor 4 from the electric motor 6 driven and can be rotated.

Anstelle eines Elektromotors 6 kann beispielsweise auch ein pneumatischer Antrieb vorgesehen werden. Als pneumatisches Antriebsmedium könnte dabei die für das Ablenken und Beschleunigen des Strahlguts eingesetzte Druckluft eingesetzt werden.Instead of an electric motor 6, for example, a pneumatic drive can be provided. As a pneumatic drive medium could be used for distraction and acceleration of the blasting material used.

Das stationäre Zufuhrrohr 1 für das Strahlgut kann an der Oberseite über eine Schlauchverbindung mit dem Vorratsbehälter für Strahlgut verbunden werden. Sowohl die Schlauchverbindung wie auch der Vorratsbehälter sind zugunsten einer übersichtlichen Darstellung jedoch nicht eingezeichnet.The stationary feed pipe 1 for the blasting material can be on the top via a hose connection to the storage container for blasting material. Both the hose connection like the storage container are in favor of a clear Representation not shown.

Der Betrieb der Vorrichtung stellt sich wie folgt dar:The operation of the device is as follows:

Die für den eigentlichen Strahlvorgang benötigte Druckluft wird über eine hier nicht dargestellte Leitung der in das Gehäuse 8 führenden, radialen Anschluss-Bohrung 15 zugeleitet, von wo sie in den oberen Ringraum 14 strömt. Vom oberen Ringraum 14 gelangt die Druckluft über die in den Rotor 4 eingelassenen Längsbohrungen 17 in den unteren Ringraum 18 und von dort in das am Rotor 4 befestigte Zufuhrrohr 5. Am Ende dieses Zufuhrrohrs 5 entweicht die Druckluft über das abgebogene Endstück 20, und zwar so, dass sie aus dem stationären Zufuhrrohr 1 austretendes Strahlgut in Richtung des Luftstrahls ablenkt und beschleunigt. Das Strahlgut selber wird, wie vorgängig angeführt, aus einem Vorratsbehälter über eine Schlauchverbindung dem stationären, zentralen Zufuhrrohr 1 zugeführt, aus welchem es an der Austrittsöffnung 22 austritt. Die Zufuhr des Strahlguts erfolgt üblicherweise durch ein Trägergas, beispielsweise Luft, wodurch die Vorrichtung nicht nur in der hier dargestellten vertikalen sondern in jeder beliebigen Lage einsetzbar ist. Als weitere Variante sei das Ansaugen des Strahlguts durch Unterdruck erwähnt.The compressed air required for the actual blasting process is via a line, not shown here, into the housing 8 leading, radial connection bore 15 fed from where it flows into the upper annular space 14. Arrived from the upper annular space 14 the compressed air via those admitted into the rotor 4 Longitudinal bores 17 in the lower annular space 18 and from there in the feed pipe 5 attached to the rotor 4. At the end of this feed pipe 5 the compressed air escapes through the bent end piece 20, in such a way that it exits from the stationary feed pipe 1 Deflects and accelerates the blasting material in the direction of the air jet. The blasting material itself is, as mentioned above, from a storage container via a hose connection to the stationary, central feed pipe 1 supplied, from which it is the outlet opening 22 exits. The blasting material is fed usually by a carrier gas, for example air, whereby the device is not only shown in the here vertical but can be used in any position. As Another variant is the suction of the blasting material by negative pressure mentioned.

Durch eine Rotation des Rotors 4, und damit des Druckluft-Zufuhrrohrs 5 sowie dessen Endstück 20, um die zentrale Achse 7 der Vorrichtung wird der quer zur Drehachse 7 des Rotors 4 aus dem drehbaren Zufuhrrohr austretende Luftstrahl in Bezug auf die Mündungsöffnung 21 des Endstücks 20 kreisförmig um die Rotor-Drehachse 7 bewegt. Durch diesen sich auf einer Kreisbahn bewegenden Luftstrahl wird das Strahlgut nach dem Austritt aus dem zentralen Zufuhrrohr 1 quer zur Drehachse 7 des Rotors 4 abgelenkt und in Richtung der zu strahlenden Wandung beschleunigt. Auf diese Weise können Bohrungs- und Rohrwandungen gestrahlt werden.By rotating the rotor 4, and thus the compressed air supply pipe 5 and its end piece 20 about the central axis 7 the device is made transverse to the axis of rotation 7 of the rotor 4 air jet emerging with respect to the rotatable feed pipe the mouth opening 21 of the end piece 20 circularly around the rotor axis of rotation 7 moves. Through this on a circular path moving jet of air, the blasting material will exit after exiting the central feed pipe 1 transverse to the axis of rotation 7 of the rotor 4 deflected and accelerated in the direction of the wall to be blasted. In this way, bore and pipe walls can be blasted become.

Bei einer Vorrichtung zum Sandstrahlen von Bohrungs- und Rohrwandungen, die mit den vorgängig aufgeführten Merkmalen versehen ist, kann der Verschleiss im Bereich der Austrittsdüse erheblich reduziert werden, da das Strahlgut erst ausserhalb des Zufuhrrohres 1 abgelenkt und beschleunigt wird. Da nur das Zufuhrrohr 5 für Druckluft drehbar angeordnet ist, können die Nachteile, die sich im Zusammenhang mit der Lagerung und Abdichtung von Strahlgut führenden Rohren ergeben, eliminiert werden. In a device for sandblasting bore and pipe walls, provided with the features listed above the wear in the area of the outlet nozzle can be considerable can be reduced because the blasting material is only outside the Feed pipe 1 is deflected and accelerated. Because only the feed pipe 5 is arranged rotatably for compressed air, the Disadvantages related to storage and sealing of pipes carrying blasting material, eliminated become.

Es ist zudem durchaus denkbar, dass mehrere Vorrichtung hinter-und/oder nebeneinander angeordnet werden bzw. eine Mehrfachvorrichtung konstruiert wird. Mit einer solchen Mehrfachvorrichtung könnten beispielsweise mehrere oder sämtliche Zylinder-Bohrungen eines Motorblocks in einem Arbeitsgang gestrahlt werden.It is also quite conceivable for several devices to be behind and / or can be arranged side by side or a multiple device is constructed. With such a multiple device could, for example, several or all cylinder bores of an engine block can be blasted in one operation.

Zur Änderung des Winkels und der Geschwindigkeit, mit der das Strahlgut auf die zu strahlende Wandung auftrifft, können folgende Parameter verändert werden:

  • die Geschwindigkeit, mit der das Strahlgut aus dem Zufuhrrohr austritt,
  • die Menge des Strahlguts,
  • die mittlere Masse der einzelnen Strahlgutkörner,
  • die Geschwindigkeit des Luftstrahls bzw. der Luftdruck,
  • der Auftreffwinkel des Luftstrahls auf das Strahlgut, indem der Abbiegewinkel des Endstücks variiert wird.
To change the angle and the speed at which the blasting material hits the wall to be blasted, the following parameters can be changed:
  • the speed at which the blasting material emerges from the feed pipe,
  • the amount of blasting material,
  • the average mass of the individual grits,
  • the speed of the air jet or the air pressure,
  • the angle of impact of the air jet on the blasting material by varying the angle of the end piece.

Durch Änderung eines einzelnen oder mehrerer Parametern können somit Wandungen von Bohrungen mit unterschiedlichen Durchmessern gestrahlt werden. In der Praxis hat es sich jedoch gezeigt, dass es in den allermeisten Fällen genügt, wenn die Luftgeschwindigkeit und/oder der Austrittswinkel des Luftstrahls verändert werden.By changing a single or multiple parameters thus walls of bores with different diameters be blasted. In practice, however, that in most cases it is sufficient if the Air speed and / or the exit angle of the air jet to be changed.

Um zu verhindern, dass sich einzelne Strahlkörner in der gestrahlten Wandung festsetzen, wird das aus dem Zufuhrrohr austretende Strahlgut durch den Luftstrahl vorzugsweise um 50° bis 70° abgelenkt.To prevent individual blasting grains from being blasted in the If the wall is fixed, that which emerges from the feed pipe Blasting material through the air jet preferably by 50 ° to 70 ° deflected.

Claims (17)

  1. Device for sandblasting walls of holes and pipes, having a first pipe (1) for supplying the abrasive material and a second pipe (5) for supplying compressed air, the second pipe (5) having an end piece (20) which diverts the jet of air, characterized in that the second pipe (5) can be rotated about the longitudinal centre axis (7) of the first pipe (1), the mouth (21) of the end piece (20) of the second pipe (5) being arranged downstream of the outlet opening (22) of the first pipe (1), as seen in the direction of flow, in such a manner that the flow of air which emerges from the end piece (20) diverts the stream of abrasive material which emerges from the first pipe (1), the first pipe for supplying the abrasive material being connected to a storage container for abrasive material.
  2. Device according to Claim 1, characterized in that the first pipe (1) is arranged in a rotationally fixed manner and is of straight design at least in the area of its outlet end.
  3. Device according to Claim 1 or 2, characterized in that the angled-off end piece (20) is of modular design and is releasably attached to the second pipe (5).
  4. Device according to one of the preceding claims, characterized in that the end area of the second pipe (5) is supported on the end area of the first pipe (1).
  5. Device according to one of the preceding claims, characterized in that an electric or pneumatic drive device is provided for driving the second pipe (5).
  6. Device according to one of the preceding claims, characterized in that it has a connection element (2) with a stator (3) and a rotor (4), and in that the second pipe (5) is mounted on the rotor (4) outside the axis of rotation of the rotor.
  7. Device according to one of the preceding claims, characterized in that the first pipe (1) is attached to the stator (3), and in that its longitudinal centre axis (7) coincides with the axis of rotation of the rotor (4).
  8. Device according to Claim 6 or 7, characterized in that the connection element (2) has a first annular cavity (14), into which a connection hole (15), which leads through the stator (3) from the outside, for supplying compressed air opens, in that the rotor (4) has a second annular cavity (18), which is connected to the first annular cavity (14) via a plurality of holes (17) which are made in the rotor (4), and in that the second pipe (5) for supplying compressed air is connected to the second annular cavity (18).
  9. Device according to one of the preceding claims, characterized in that the end piece (20) of the second pipe (5) is angled off at an angle of 30° to 90°, preferably 50° to 70°, with respect to the axis of rotation (7) of the rotor.
  10. Device according to one of Claims 6 to 9, characterized in that an end area (19) of the rotor (4) projects beyond the stator (3) at least on one side, the rotor (4) being provided in this area (19) with a coupling element (30), via which it can be rotated by a motor (6).
  11. Device according to Claim 10, characterized in that the coupling element (30) is designed as a toothed wheel.
  12. Method for sandblasting walls of holes and pipes, in which the abrasive material is supplied via a supply pipe (1), characterized in that the abrasive material is diverted by means of a jet of air, which rotates about the supply pipe (1), after it has emerged from the supply pipe (1).
  13. Method according to Claim 12, characterized in that the abrasive material is accelerated by the jet of air.
  14. Method according to Claim 12 or 13, characterized in that the abrasive material is diverted through 30° to 90°, preferably 50° to 80°, with respect to the axis of rotation (7) of the jet of air.
  15. Method according to one of Claims 12 to 14, characterized in that the angle through which the abrasive material is diverted is affected by the angle at which the jet of air comes into contact with the abrasive material and/or by the air velocity.
  16. Method according to one of Claims 12 to 15, characterized in that the abrasive material is supplied by means of compressed air.
  17. Use of an application device which has a first pipe (1) for supplying the material to be applied and a second pipe (5) for supplying compressed air, the second pipe (5) having an end piece (20), which diverts the jet of air, and being rotatable about the longitudinal centre axis (7) of the first pipe (1), the mouth (21) of the end piece (20) of the second pipe (5) being arranged downstream of the outlet opening (22) of the first pipe (1), as seen in the direction of flow, in such a manner that the flow of air which emerges from the end piece (20) diverts the stream of material to be applied which emerges from the first pipe (1), as a device for sandblasting walls of holes and pipes, by using sand or a corresponding abrasive, particulate material as the material to be applied.
EP96810032A 1995-02-20 1996-01-16 Apparatus and method for sandblasting bore- and tube-walls Expired - Lifetime EP0727282B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH484/95 1995-02-20
CH48495 1995-02-20
CH48495 1995-02-20

Publications (2)

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EP0727282A1 EP0727282A1 (en) 1996-08-21
EP0727282B1 true EP0727282B1 (en) 1999-10-06

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Application Number Title Priority Date Filing Date
EP96810032A Expired - Lifetime EP0727282B1 (en) 1995-02-20 1996-01-16 Apparatus and method for sandblasting bore- and tube-walls

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US (1) US5582537A (en)
EP (1) EP0727282B1 (en)
JP (1) JP3619598B2 (en)
KR (1) KR100374952B1 (en)
AT (1) ATE185306T1 (en)
CA (1) CA2168481C (en)
DE (1) DE59603253D1 (en)
ES (1) ES2140053T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130598A1 (en) 2018-11-30 2020-06-04 ZELL Oberflächentechnik GmbH & Co. KG Device, diverter pin and method for machining surfaces in dead space bores

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2443169A1 (en) * 2002-12-19 2004-06-19 Sulzer Metco Ag An apparatus for the surface working of a workpiece as well as the use of the apparatus for the blasting of bore walls
CA2505066C (en) * 2005-04-04 2009-02-24 High Production Inc. Hand held abrasive blaster
IT1396287B1 (en) * 2009-09-28 2012-11-16 Biesse Spa CONTINUOUS DISTRIBUTOR
DE102013109715A1 (en) * 2013-09-05 2015-03-05 Piller Entgrattechnik Gmbh Device for roughening the cylinder bores of cylinder crankcases
DE202017102179U1 (en) 2017-04-11 2018-04-13 Piller Entgrattechnik Gmbh Device for roughening cylinder surfaces
CN118404509A (en) * 2024-06-28 2024-07-30 江苏海达电气有限公司 GIS switch shell inner wall particle jet polishing device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE585239C (en) * 1933-09-30 Prea G M B H Spray gun for painting hard-to-reach objects
US2149526A (en) * 1937-06-30 1939-03-07 Oakite Prod Inc Device for cleaning surfaces
US2358557A (en) * 1942-06-26 1944-09-19 John G Boyd Blast cleaning device
GB631417A (en) * 1947-07-17 1949-11-02 Vauxhall Motors Ltd Improved method of and apparatus for shot or grit blasting internal surfaces
US2738231A (en) * 1955-02-07 1956-03-13 Clow James B & Sons Rotary spray gun
US2842095A (en) * 1956-05-15 1958-07-08 Leibner Robert Spraying device for lining the interior of small diameter pipes
US3654786A (en) * 1970-09-15 1972-04-11 Metal Improvement Co Metal surface treating apparatus for internal surfaces
CH571365A5 (en) * 1974-07-22 1976-01-15 Fischer Ag Georg
DE3040995A1 (en) * 1979-11-09 1981-05-27 National Research Development Corp., London DEVICE FOR PRODUCING A CLEANING SPRAYER SPRAYING
US4704826A (en) * 1981-06-26 1987-11-10 Kirkland Wyatt S Spin-blast tool
DE3336873A1 (en) * 1983-10-11 1985-04-25 Albert Ing.(grad.) 2800 Bremen Zimmer Nozzle head for apparatuses for finely metered application of liquid to pasty media to surfaces
US5461407A (en) * 1992-09-02 1995-10-24 Telesis Marking Systems, Inc. Marking method and apparatus using gas entrained abrasive particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130598A1 (en) 2018-11-30 2020-06-04 ZELL Oberflächentechnik GmbH & Co. KG Device, diverter pin and method for machining surfaces in dead space bores

Also Published As

Publication number Publication date
ATE185306T1 (en) 1999-10-15
US5582537A (en) 1996-12-10
EP0727282A1 (en) 1996-08-21
KR960031062A (en) 1996-09-17
JPH08229824A (en) 1996-09-10
JP3619598B2 (en) 2005-02-09
CA2168481C (en) 1999-01-19
ES2140053T3 (en) 2000-02-16
DE59603253D1 (en) 1999-11-11
CA2168481A1 (en) 1996-08-21
KR100374952B1 (en) 2003-04-23

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