EP3988221A1 - Rotor nozzle - Google Patents

Rotor nozzle Download PDF

Info

Publication number
EP3988221A1
EP3988221A1 EP21200848.6A EP21200848A EP3988221A1 EP 3988221 A1 EP3988221 A1 EP 3988221A1 EP 21200848 A EP21200848 A EP 21200848A EP 3988221 A1 EP3988221 A1 EP 3988221A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzles
rotor
bore
rotor nozzle
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.)
Pending
Application number
EP21200848.6A
Other languages
German (de)
French (fr)
Inventor
Fabian STOFFERS
Christian Stoffers
Jannick Hinschen
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.)
Hammelmann GmbH
Original Assignee
Hammelmann GmbH
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 Hammelmann GmbH filed Critical Hammelmann GmbH
Publication of EP3988221A1 publication Critical patent/EP3988221A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/025—Rotational joints
    • B05B3/027—Rotational joints with radial fluid passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • the invention relates to a rotor nozzle according to the preamble of claim 1.
  • Such rotor nozzles are used, for example and in particular, for cleaning the inside of pipes, e.g. to remove deposits in heat exchanger pipes.
  • the fluid used for cleaning is under high pressure of up to 4000 bar.
  • the rotor nozzle has a nozzle head which is rotatably mounted on a carrier element and has at least one, usually a plurality of, removal nozzles which are arranged at the same angular distance from one another.
  • removal nozzles are permanently in fluid communication with a central axial bore of the carrier element, with the pressurized liquid exiting laterally from the nozzle head via the removal nozzles during operation.
  • the removal nozzles are aligned at a distance from the radial line, so that when the liquid exits, there is a torque that causes the nozzle head to rotate.
  • the rotor nozzle can be slowed down by an active brake, e.g. an eddy current brake or by friction on the lateral surface caused by air or the escaping liquid.
  • an active brake e.g. an eddy current brake or by friction on the lateral surface caused by air or the escaping liquid.
  • the removal nozzles of the known rotor nozzle thus each fulfill two tasks, namely the removal of deposits adhering to the inner surface of a pipe to be processed and that of a rotating drive.
  • the lateral surface of the nozzle head can be destroyed by the resulting increased centrifugal forces, with fragments possibly detaching from the lateral surface that can no longer be removed from the pipe to be processed, so that further use of the pipe is impossible.
  • the nozzle head itself can no longer be used if it is worn and therefore also represents a problem from an economic point of view.
  • the invention is based on the object of further developing a rotor nozzle of the generic type in such a way that its functional reliability is improved and its service life is increased.
  • the removal nozzle and the drive nozzle are now separated, which, as has been shown, significantly increases the service life of the rotor nozzle, mainly because the wear of the removal nozzles that has been complained about up to now no longer occurs due to their radial alignment, in the worst case in one negligible amount.
  • the removal nozzles can be operated with the optimal pressure of the liquid to remove the deposits on the inner surfaces of the respective pipe
  • the pressure required for the function of the drive nozzles can be influenced by appropriate design of the drive nozzle in such a way that the necessary rotation is guaranteed, but at the same time the wear of the propulsion nozzle is minimized due to the off-radial position.
  • the removal nozzles are fed jointly and simultaneously with the pressurized liquid, for which purpose a peripheral annular chamber can be provided which is open to liquid on the one hand with the removal nozzles and on the other hand with the axial bore of the carrier element via transverse bores. Regardless of the speed of the nozzle head, the removal nozzles are constantly supplied with high-pressure liquid. This means that the removal nozzles are only used to clean the inner wall of a pipe.
  • the propulsion nozzles can be controlled with regard to their use.
  • through bores are guided through the wall of the carrier element, which are open to the drive nozzles when the nozzle head is in a corresponding rotational position.
  • the drive nozzles can be fed briefly with the liquid under high pressure, for example twice per revolution, by two such through-holes connected to the axial bore being brought into alignment with the entrance of the drive nozzle.
  • nozzle wear can be detected more reliably and bursting of the jacket of the nozzle head can be avoided. This results in a significant economic advantage, since a replacement procurement of the rotor nozzle or the nozzle head is accompanied by an interruption in operation at significantly longer time intervals, if at all.
  • a rotor nozzle is shown, with a carrier element 1 and a nozzle head 4, which is rotatably mounted on a supporting pin 2 of the carrier element 1, a hydraulic drive being provided for the rotary movement.
  • the support element 1 has an axial bore 3, which is designed as a blind bore that extends into the support pin 2 and via which a liquid under high pressure can be guided.
  • removal nozzles 5 are provided in the nozzle head 4 distributed over the circumference, which are open to fluid in connection with the axial bore 3, by means of which dirt or the like adhering to the inner wall of a pipe, for example, can be removed.
  • nozzle bores 6 are connected to an annular chamber 10, which in turn is fed via transverse bores 11 in the support pin 2 with the highly pressurized liquid that is guided through the axial bore 3.
  • a row of drive nozzles 7, also distributed around the circumference, is arranged in front of the removal nozzles 5 in the direction of flow of the liquid and is introduced into the nozzle head 4, via which the liquid also fed from the axial bore 3 can be guided in such a way that the nozzle head 4 is opposite the carrier element 1 rotates.
  • a necessary torque is achieved according to the invention that, as is particularly evident in the figure 3 it can be seen that the drive nozzles 7 are arranged at a distance A from the radial line R, with the distance A forming a lever arm.
  • the drive nozzles 7 can each be brought into operative connection via a feed bore 8 in the nozzle head 4 for the passage of liquid with at least one through bore 9 of the support pin 2 which is open towards the axial bore 3 .
  • each drive nozzle 7 is used twice for each revolution of the nozzle head 4. Otherwise, the drive nozzles 7 are arranged in front of the removal nozzles, seen in the flow direction of the liquid.
  • the feed bores 8 are expediently arranged parallel to an associated radial line R. What is decisive, however, is that the liquid emerges from the drive nozzle 7 at a distance A from the radial line R.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

Eine Rotordüse, mit einem eine Axialbohrung (3) zur Zuführung einer unter Druck stehenden Flüssigkeit aufweisenden Trägerelement (1), einem darauf drehbar gelagerten und durch ein hydraulisch erzeugtes Drehmoment rotierend antreibbaren Düsenkopf (4), der mindestens eine mit der Axialbohrung (3) flüssigkeitsoffen in Verbindung stehende, seitlich austretende Abtragsdüse (5) aufweist, ist so ausgebildet, dass die Abtragsdüse (5) radial ausgerichtet ist und der Düsenkopf (4) mindestens eine seitlich austretende, separate Antriebsdüse (7) aufweist, die mit einem Abstand (A) zur Radialen (R) verläuft und je nach Rotationsstellung des Düsenkopfs 4 über eine Durchgangsbohrung (9) des Trägerelementes (1) mit der Axialbohrung (3) verbunden ist.A rotor nozzle, with a carrier element (1) having an axial bore (3) for supplying a pressurized liquid, a nozzle head (4) rotatably mounted thereon and rotatably driven by a hydraulically generated torque, the at least one with the axial bore (3) open to liquid connected, laterally exiting removal nozzle (5), is designed in such a way that the removal nozzle (5) is aligned radially and the nozzle head (4) has at least one laterally exiting, separate drive nozzle (7) which is spaced at a distance (A) to the radial (R) and, depending on the rotational position of the nozzle head 4, is connected to the axial bore (3) via a through bore (9) in the carrier element (1).

Description

Die Erfindung betrifft eine Rotordüse gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a rotor nozzle according to the preamble of claim 1.

Solche Rotordüsen finden beispielsweise und insbesondere bei der Innenreinigung von Rohren Verwendung, um z.B. Ablagerungen in WärmetauscherRohren zu entfernen. Dabei steht das Fluid, mit dem die Reinigung erfolgt, unter einem hohen Druck von bis 4000 bar.Such rotor nozzles are used, for example and in particular, for cleaning the inside of pipes, e.g. to remove deposits in heat exchanger pipes. The fluid used for cleaning is under high pressure of up to 4000 bar.

Die Rotordüse weist einen auf einem Trägerelement drehbar gelagerten Düsenkopf mit mindestens einer, üblicherweise mehreren in gleichem Winkelabstand zueinander angeordnete Abtragsdüsen auf.The rotor nozzle has a nozzle head which is rotatably mounted on a carrier element and has at least one, usually a plurality of, removal nozzles which are arranged at the same angular distance from one another.

Diese Abtragsdüsen stehen flüssigkeitsoffen dauerhaft mit einer zentralen Axialbohrung des Trägerelements in Verbindung, wobei in Funktion die unter Druck stehende Flüssigkeit über die Abtragsdüsen seitlich aus dem Düsenkopf austritt.These removal nozzles are permanently in fluid communication with a central axial bore of the carrier element, with the pressurized liquid exiting laterally from the nozzle head via the removal nozzles during operation.

Die Abtragsdüsen sind abständig zur Radialen ausgerichtet, so dass sich beim Austritt der Flüssigkeit ein Drehmoment ergibt, durch das der Düsenkopf in Rotation versetzt wird.The removal nozzles are aligned at a distance from the radial line, so that when the liquid exits, there is a torque that causes the nozzle head to rotate.

Die Abbremsung der Rotordüse kann über eine aktive Bremse, z.B. eine Wirbelstrombremse oder über Reibung an der Mantelfläche durch Luft oder die austretende Flüssigkeit erfolgen.The rotor nozzle can be slowed down by an active brake, e.g. an eddy current brake or by friction on the lateral surface caused by air or the escaping liquid.

Die Abtragsdüsen der bekannten Rotordüse erfüllen also jeweils zwei Aufgaben, nämlich zum einen den Abtrag von an der Innenfläche eines zu bearbeitenden Rohres anhaftendem Belag sowie die eines rotierenden Antriebs.The removal nozzles of the known rotor nozzle thus each fulfill two tasks, namely the removal of deposits adhering to the inner surface of a pipe to be processed and that of a rotating drive.

Allerdings hat sich gezeigt, dass damit erhebliche Nachteile verbunden sind, insbesondere mit zunehmender Betriebsdauer.However, it has been shown that this entails considerable disadvantages, in particular as the operating time increases.

So ist durch diese Konzeption ein zunehmender Verschleiß der Düsenbohrungen zu beklagen, insbesondere in der Form, dass sich ihr Durchmesser vergrößert, wodurch sich der Volumenstrom erhöht, bei gleichbleibendem Betriebsdruck.Due to this design, there is increasing wear of the nozzle bores, in particular in the form that their diameter increases, which increases the volume flow, with the operating pressure remaining the same.

Dies führt zu einem höheren Drehmoment und somit zu einer höheren Drehzahl, bei der sich jedoch das Reinigungsergebnis verschlechtert.This leads to a higher torque and thus to a higher speed, at which, however, the cleaning result deteriorates.

Darüber hinaus kann die Mantelfläche des Düsenkopfes durch die sich ergebenden erhöhten Fliehkräfte zerstört werden, wobei sich unter Umständen Bruchstücke aus der Mantelfläche lösen, die nicht mehr aus dem zu bearbeitendem Rohr entfernt werden können, so dass eine weitere Nutzung des Rohres ausgeschlossen ist.In addition, the lateral surface of the nozzle head can be destroyed by the resulting increased centrifugal forces, with fragments possibly detaching from the lateral surface that can no longer be removed from the pipe to be processed, so that further use of the pipe is impossible.

Bei ungebremsten Rotordüsen, also bei solchen ohne aktive Bremsung, reicht schon ein geringer Verschleiß der Düsenbohrungen aus, um den Mantel des Düsenkopfes durch die höhere Drehzahl zu zerstören. Der zunächst geringe Volumenstromanstieg ist, wenn überhaupt, von der Bedienungsperson nur schwer erkennbar.In the case of unbraked rotor nozzles, i.e. those without active braking, even slight wear on the nozzle bores is sufficient to destroy the jacket of the nozzle head due to the higher speed. The initially slight increase in volume flow is difficult, if at all, to be recognized by the operator.

Neben der Gefahr der Beschädigung des zu bearbeitenden Rohres ist auch der Düsenkopf selbst bei entsprechendem Verschleiß nicht mehr nutzbar und stellt daher auch aus wirtschaftlicher Hinsicht ein Problem dar.In addition to the risk of damage to the pipe to be processed, the nozzle head itself can no longer be used if it is worn and therefore also represents a problem from an economic point of view.

Der Erfindung liegt die Aufgabe zugrunde, eine Rotordüse der gattungsgemäßen Art so weiterzuentwickeln, dass ihre Funktionssicherheit verbessert und ihre Standzeit erhöht wird.The invention is based on the object of further developing a rotor nozzle of the generic type in such a way that its functional reliability is improved and its service life is increased.

Diese Aufgabe wird durch eine Rotordüse mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a rotary nozzle having the features of claim 1.

Gemäß der Erfindung sind nunmehr die Abtragsdüse und die Antriebsdüse separiert, wodurch sich, wie sich gezeigt hat, die Standzeit der Rotordüse deutlich erhöht, vor allem deshalb, weil der bislang zu beklagende Verschleiß der Abtragsdüsen durch ihre radiale Ausrichtung nicht mehr auftritt, schlimmstenfalls in einem zu vernachlässigenden Maß.According to the invention, the removal nozzle and the drive nozzle are now separated, which, as has been shown, significantly increases the service life of the rotor nozzle, mainly because the wear of the removal nozzles that has been complained about up to now no longer occurs due to their radial alignment, in the worst case in one negligible amount.

Während die Abtragsdüsen mit dem zum Abtrag der Ablagerungen auf den Innenflächen des jeweiligen Rohres mit optimalem Druck der Flüssigkeit betrieben werden können, ist der für die Funktion der Antriebsdüsen notwendige Druck durch entsprechende Gestaltung der Antriebsdüse so beeinflussbar, dass die notwendige Rotation gewährleistet ist, gleichzeitig jedoch der Verschleiß der Antriebsdüse aufgrund der abständig zur Radialen ausgerichteten Position minimiert wird.While the removal nozzles can be operated with the optimal pressure of the liquid to remove the deposits on the inner surfaces of the respective pipe, the pressure required for the function of the drive nozzles can be influenced by appropriate design of the drive nozzle in such a way that the necessary rotation is guaranteed, but at the same time the wear of the propulsion nozzle is minimized due to the off-radial position.

Die Abtragsdüsen werden gemeinsam und gleichzeitig mit der unter Druck stehenden Flüssigkeit gespeist, wozu eine umfängliche Ringkammer vorgesehen sein kann, die flüssigkeitsoffen einerseits mit den Abtragsdüsen und andererseits über Querbohrungen mit der Axialbohrung des Trägerelements in Verbindung steht. Unabhängig von der Drehzahl des Düsenkopfes werden die Abtragsdüsen permanent mit Hochdruck-Flüssigkeit versorgt. D.h. die Abtragsdüsen dienen ausschließlich der Reinigung der Innenwand eines Rohres.The removal nozzles are fed jointly and simultaneously with the pressurized liquid, for which purpose a peripheral annular chamber can be provided which is open to liquid on the one hand with the removal nozzles and on the other hand with the axial bore of the carrier element via transverse bores. Regardless of the speed of the nozzle head, the removal nozzles are constantly supplied with high-pressure liquid. This means that the removal nozzles are only used to clean the inner wall of a pipe.

Die Antriebsdüsen hingegen können hinsichtlich ihres Einsatzes gesteuert werden. Dazu sind Durchgangsbohrungen durch die Wandung des Trägerelements geführt, die bei entsprechender Rotationsstellung des Düsenkopfes mit den Antriebsdüsen flüssigkeitsoffen in Verbindung stehen.The propulsion nozzles, on the other hand, can be controlled with regard to their use. For this purpose, through bores are guided through the wall of the carrier element, which are open to the drive nozzles when the nozzle head is in a corresponding rotational position.

So können die Antriebsdüsen kurzzeitig mit der unter Hochdruck stehenden Flüssigkeit gespeist werden, beispielsweise pro Umdrehung zweimal, indem zwei solcher mit der Axialbohrung in Verbindung stehende Durchgangsbohrungen mit dem Eingang der Antriebsdüse in Deckung gebracht werden.Thus, the drive nozzles can be fed briefly with the liquid under high pressure, for example twice per revolution, by two such through-holes connected to the axial bore being brought into alignment with the entrance of the drive nozzle.

Aufgrund der sehr kurzen Beaufschlagung der Antriebsdüsen mit Hochdruck-Flüssigkeit während der Rotation des Düsenkopfes ist der Verschleiß der Antriebsdüsen deutlich reduziert. Dies wiederum führt über einen längeren Zeitraum als bisher zu einer konstant bleibenden Drehzahl des Düsenkopfes mit Verbesserung des Reinigungsergebnisses.Due to the very brief exposure of the drive nozzles to high-pressure liquid during the rotation of the nozzle head, the wear on the drive nozzles is significantly reduced. This in turn leads to a constant speed of the nozzle head over a longer period of time than before, with an improvement in the cleaning result.

Überdies kann ein Düsenverschleiß sicherer erkannt und ein Bersten des Mantels des Düsenkopfes vermieden werden. Daraus ergibt sich ein wesentlicher wirtschaftlicher Vorteil, da eine Ersatzbeschaffung der Rotordüse bzw. des Düsenkopfes einhergehend mit einer Betriebsunterbrechung in deutlich längeren Zeitabständen, wenn überhaupt erforderlich wird.In addition, nozzle wear can be detected more reliably and bursting of the jacket of the nozzle head can be avoided. This results in a significant economic advantage, since a replacement procurement of the rotor nozzle or the nozzle head is accompanied by an interruption in operation at significantly longer time intervals, if at all.

Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous developments of the invention are characterized in the dependent claims.

Ein Ausführungsbeispiel wird nachfolgend anhand der beigefügten Zeichnungen beschrieben.An embodiment is described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine erfindungsgemäße Rotordüse in einem Längsschnitt
Figur 2
einen Querschnitt durch die Rotordüse im Bereich der Abtragsdüsen
Figur 3
einen Querschnitt durch die Rotordüse im Bereich der Antriebsdüsen.
Show it:
figure 1
a rotor nozzle according to the invention in a longitudinal section
figure 2
a cross section through the rotor nozzle in the area of the removal nozzles
figure 3
a cross-section through the rotor nozzle in the area of the propulsion nozzles.

In der Figur 1 ist eine Rotordüse dargestellt, mit einem Trägerelement 1 und einem Düsenkopf 4, der drehbar auf einem Tragzapfen 2 des Trägerelements 1 gelagert ist, wobei zur Drehbewegung ein hydraulischer Antrieb vorgesehen ist.In the figure 1 a rotor nozzle is shown, with a carrier element 1 and a nozzle head 4, which is rotatably mounted on a supporting pin 2 of the carrier element 1, a hydraulic drive being provided for the rotary movement.

Hierzu weist das Trägerelement 1 eine Axialbohrung 3 auf, die als bis in den Tragzapfen 2 geführte Sackbohrung ausgebildet ist und über die eine unter hohem Druck stehende Flüssigkeit führbar ist.For this purpose, the support element 1 has an axial bore 3, which is designed as a blind bore that extends into the support pin 2 and via which a liquid under high pressure can be guided.

Wie insbesondere die Figur 2 sehr deutlich wiedergibt, sind im Düsenkopf 4 über den Umfang verteilt Abtragsdüsen 5 vorgesehen, die flüssigkeitsoffen mit der Axialbohrung 3 in Verbindung stehen, mittels derer beispielsweise an der Innenwand eines Rohres anhaftende Verschmutzungen oder dergleichen abtragbar sind.Like those in particular figure 2 very clearly reproduces, removal nozzles 5 are provided in the nozzle head 4 distributed over the circumference, which are open to fluid in connection with the axial bore 3, by means of which dirt or the like adhering to the inner wall of a pipe, for example, can be removed.

Für einen ständigen und für alle Abtragsdüsen 5 gleichmäßigen Flüssigkeitsstrom stehen Düsenbohrungen 6 mit einer Ringkammer 10 in Verbindung, die wiederum über Querbohrungen 11 im Tragzapfen 2 mit der unter hohem Druck stehenden Flüssigkeit, die durch die Axialbohrung 3 geführt ist, gespeist wird.For a constant flow of liquid that is uniform for all removal nozzles 5, nozzle bores 6 are connected to an annular chamber 10, which in turn is fed via transverse bores 11 in the support pin 2 with the highly pressurized liquid that is guided through the axial bore 3.

Zum Drehantrieb des Düsenkopfes 4 ist in Strömungsrichtung der Flüssigkeit vor den Abtragsdüsen 5 angeordnet eine Reihe gleichfalls umfänglich verteilter Antriebsdüsen 7 in den Düsenkopf 4 eingebracht, über die ebenfalls aus der Axialbohrung 3 zugeführte Flüssigkeit führbar ist und zwar derart, dass der Düsenkopf 4 gegenüber dem Trägerelement 1 rotiert.To drive the nozzle head 4 in rotation, a row of drive nozzles 7, also distributed around the circumference, is arranged in front of the removal nozzles 5 in the direction of flow of the liquid and is introduced into the nozzle head 4, via which the liquid also fed from the axial bore 3 can be guided in such a way that the nozzle head 4 is opposite the carrier element 1 rotates.

Ein dazu notwendiges Drehmoment wird gemäß der Erfindung dadurch erreicht, dass, wie besonders deutlich in der Figur 3 zu erkennen ist, die Antriebsdüsen 7 mit einem Abstand A zur Radialen R angeordnet ist, wobei der Abstand A einen Hebelarm bildet.A necessary torque is achieved according to the invention that, as is particularly evident in the figure 3 it can be seen that the drive nozzles 7 are arranged at a distance A from the radial line R, with the distance A forming a lever arm.

Zur Aufbringung des Drehmoments sind die Antriebsdüsen 7 jeweils über eine Zuführbohrung 8 im Düsenkopf 4 zum Flüssigkeitsdurchtritt mit mindestens einer Durchgangsbohrung 9 des Tragzapfens 2 in Wirkverbindung bringbar, die zur Axialbohrung 3 hin offen ist.To apply the torque, the drive nozzles 7 can each be brought into operative connection via a feed bore 8 in the nozzle head 4 for the passage of liquid with at least one through bore 9 of the support pin 2 which is open towards the axial bore 3 .

Im Beispiel sind bei Anordnung von vier Antriebsdüsen 7, die in gleichem Winkelabstand zueinander angeordnet sind, zwei sich gegenüberliegende Durchgangsbohrungen 9 vorgesehen, so dass jede Antriebsdüse 7 bei jeder Umdrehung des Düsenkopfes 4 zweimal zum Einsatz kommt. Im Übrigen sind die Antriebsdüsen 7, in Strömungsrichtung der Flüssigkeit gesehen, vor den Abtragsdüsen angeordnet.In the example, with the arrangement of four drive nozzles 7, which are arranged at the same angular distance from one another, two opposing through-holes 9 are provided, so that each drive nozzle 7 is used twice for each revolution of the nozzle head 4. Otherwise, the drive nozzles 7 are arranged in front of the removal nozzles, seen in the flow direction of the liquid.

Die gezeigte Anordnung sowohl der Antriebsdüsen 7 wie auch der Durchgangsbohrungen 9 ist lediglich beispielhaft. Denkbar sind auch andere Anordnungen sowohl hinsichtlich der Anzahl der Antriebsdüsen 7 und/oder der Durchgangsbohrungen 9 wie auch hinsichtlich der Abstände A zu den Radialen R.The arrangement shown, both of the drive nozzles 7 and of the through bores 9, is merely an example. Other arrangements are also conceivable, both with regard to the number of drive nozzles 7 and/or the through-holes 9 and with regard to the distances A from the radials R.

Zweckmäßigerweise sind die Zuführbohrungen 8 parallel zu einer zugeordneten Radialen R angeordnet. Entscheidend ist jedoch, dass der Flüssigkeitsaustritt aus der Antriebsdüse 7 mit Abstand A zur Radialen R erfolgt.The feed bores 8 are expediently arranged parallel to an associated radial line R. What is decisive, however, is that the liquid emerges from the drive nozzle 7 at a distance A from the radial line R.

Bezugszeichenlistereference list

11
Trägerelementcarrier element
22
Tragzapfentrunnions
33
Axialbohrungaxial bore
44
Düsenkopfnozzle head
55
Abtragsdüseremoval nozzle
66
Düsenbohrungennozzle bores
77
Antriebsdüsepropulsion nozzle
88th
Zuführbohrungfeed hole
99
Durchgangsbohrungthrough hole
1010
Ringkammerring chamber
1111
Querbohrungcross bore
AA
AbstandDistance
RR
Radialeradials

Claims (10)

Rotordüse, mit einem eine Axialbohrung (3) zur Zuführung einer unter Druck stehenden Flüssigkeit aufweisenden Trägerelement (1), einem darauf drehbar gelagerten und durch ein hydraulisch erzeugtes Drehmoment rotierend antreibbaren Düsenkopf (4), der mindestens eine mit der Axialbohrung (3) flüssigkeitsoffen in Verbindung stehende, seitlich austretende Abtragsdüse (5) aufweist, dadurch gekennzeichnet, dass die Abtragsdüse (5) radial ausgerichtet ist und der Düsenkopf (4) mindestens eine seitlich austretende, separate Antriebsdüse (7) aufweist, die mit einem Abstand (A) zur Radialen (R) verläuft und je nach Rotationsstellung des Düsenkopfes (4) über eine Durchgangsbohrung (9) des Trägerelementes (1) mit der Axialbohrung (3) in Verbindung steht.Rotor nozzle, with a carrier element (1) having an axial bore (3) for supplying a pressurized liquid, a nozzle head (4) rotatably mounted thereon and rotatably drivable by a hydraulically generated torque, the at least one with the axial bore (3) open to liquid in Connecting, laterally exiting removal nozzle (5), characterized in that the removal nozzle (5) is aligned radially and the nozzle head (4) has at least one laterally exiting, separate drive nozzle (7) which is at a distance (A) from the radial (R) and, depending on the rotational position of the nozzle head (4), is connected to the axial bore (3) via a through bore (9) in the carrier element (1). Rotordüse nach Anspruch 1, dadurch gekennzeichnet, dass mehrere, über den Umfang verteilte Antriebsdüsen (7) vorgesehen sind, die über Zuführbohrungen (8) der Antriebsdüsen (7) mit den Durchgangsbohrungen (9) in Wirkverbindung bringbar sind.Rotor nozzle according to Claim 1, characterized in that several drive nozzles (7) distributed over the circumference are provided, which can be brought into operative connection with the through-holes (9) via feed bores (8) of the drive nozzles (7). Rotordüse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Durchgangsbohrung (9) radial ausgerichtet ist.Rotor nozzle according to Claim 1 or 2, characterized in that the through bore (9) is aligned radially. Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Anordnung mehrerer Antriebsdüsen (7) diese in gleichem oder unterschiedlichem Winkelabstand zueinander angeordnet sind.Rotor nozzle according to one of the preceding claims, characterized in that when several drive nozzles (7) are arranged, these are arranged at the same or different angular distances from one another. Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Zuführbohrung (8) der Antriebsdüse (7) parallel zur Radialen (R) verläuft.Rotor nozzle according to one of the preceding claims, characterized in that a feed bore (8) of the drive nozzle (7) runs parallel to the radial (R). Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebsdüsen (7) in Strömungsrichtung der Flüssigkeit vor den Abtragsdüsen (5) angeordnet sind.Rotor nozzle according to one of the preceding claims, characterized in that the drive nozzles (7) are arranged in front of the removal nozzles (5) in the flow direction of the liquid. Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Abtragsdüsen (5) in eine umfängliche Ringkammer (10) münden, die jeweils über eine Querbohrung (11) mit der Axialbohrung (3) flüssigkeitsoffen in Verbindung steht.Rotor nozzle according to one of the preceding claims, characterized in that the removal nozzles (5) open into a circumferential annular chamber (10) which is in fluid communication with the axial bore (3) via a transverse bore (11). Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Durchgangsbohrungen (9) vorgesehen sind.Rotor nozzle according to one of the preceding claims, characterized in that several through bores (9) are provided. Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwei Durchgangsbohrungen (9) vorgesehen sind, die sich gegenüberliegend angeordnet sind.Rotor nozzle according to one of the preceding claims, characterized in that two through bores (9) are provided, which are arranged opposite one another. Rotordüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebsdüsen (7) im Betrieb der Rotordüse in Intervallen mit den Durchgangsbohrungen (9) in Wirkverbindung bringbar sind.Rotor nozzle according to one of the preceding claims, characterized in that the drive nozzles (7) can be brought into operative connection with the through bores (9) at intervals during operation of the rotor nozzle.
EP21200848.6A 2020-10-21 2021-10-05 Rotor nozzle Pending EP3988221A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020127697.4A DE102020127697B3 (en) 2020-10-21 2020-10-21 Rotor nozzle

Publications (1)

Publication Number Publication Date
EP3988221A1 true EP3988221A1 (en) 2022-04-27

Family

ID=78078090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21200848.6A Pending EP3988221A1 (en) 2020-10-21 2021-10-05 Rotor nozzle

Country Status (3)

Country Link
US (1) US20220118466A1 (en)
EP (1) EP3988221A1 (en)
DE (1) DE102020127697B3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077562A2 (en) * 1981-10-20 1983-04-27 ENZ Technik AG Pipe cleaning apparatus for sewers
JP2010214295A (en) * 2009-03-17 2010-09-30 Sugino Mach Ltd Nozzle for cleaning inside of pipe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695749A (en) * 1926-05-26 1928-12-18 George D Watson Means for cleaning casings
US1715767A (en) * 1927-12-17 1929-06-04 Flore Joseph Le Casing-shoe nozzle
US5195585A (en) * 1991-07-18 1993-03-23 Otis Engineering Corporation Wireline retrievable jet cleaning tool
US6189618B1 (en) * 1998-04-20 2001-02-20 Weatherford/Lamb, Inc. Wellbore wash nozzle system
US9399230B2 (en) * 2014-01-16 2016-07-26 Nlb Corp. Rotating fluid nozzle for tube cleaning system
RU2017145614A (en) * 2017-12-25 2019-06-25 Общество с ограниченной ответственностью "Перфобур" MILLING MACHINE WITH SMALL-SIZE HYDRAULIC WAKING ENGINE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077562A2 (en) * 1981-10-20 1983-04-27 ENZ Technik AG Pipe cleaning apparatus for sewers
JP2010214295A (en) * 2009-03-17 2010-09-30 Sugino Mach Ltd Nozzle for cleaning inside of pipe

Also Published As

Publication number Publication date
US20220118466A1 (en) 2022-04-21
DE102020127697B3 (en) 2021-11-04

Similar Documents

Publication Publication Date Title
DE19780282B3 (en) Self-supporting expansion drill
DE3016804C2 (en)
EP3441207B1 (en) Method for core drilling and devices for same
EP0157395A2 (en) Whirl nozzle as a hydraulic tool
EP1901894B1 (en) Nozzle and method for treating an interior of a workpiece
EP0077562A2 (en) Pipe cleaning apparatus for sewers
EP1871549B1 (en) Extractor
EP2747891B1 (en) Nozzle head for a cleaning device
EP3326727B1 (en) Device for the inspection and cleaning of a conduit or pipe section
DE3122292A1 (en) BRAKE AND CLUTCH DEVICE
DE102020127697B3 (en) Rotor nozzle
CH649011A5 (en) Pipe cleaning device in particular for internally coated pipes
DE102009025528A1 (en) Apparatus and method for cleaning pipes and channels
EP0105047B1 (en) Cutting drum for tunneling machines
DE3108996A1 (en) DEVICE FOR MACHINING CYLINDER SURFACES FOR CUTTING MACHINE TOOLS
DE3135468A1 (en) "METAL BRUSH FOR REMOVING AN ANTI-CORROSION COATING FROM WORKPIECES UNDER WATER"
EP0447774A1 (en) Clamping device for beater bars in peripheral slots of impact-mill rotors
DE3122323A1 (en) Control of the pressure water of cutting drums with internal spray arrangement
EP1092836A2 (en) Boring device with a cutting wheel having high pressure nozzles
DE3718636C1 (en) Rock drilling machine, in particular for underground mining, with a projecting, freely visible threaded pin for the positive reception of boring bars
DE2432168A1 (en) Cleaning implement for sewerage pipes - has front mounted rotating tool driven by pressurised water turbine with shaft in base with reaction bores
DE3509291C2 (en) Bearing and guide element for clearing devices on roller arms with single and double planetary gears of cutting shearer loaders
EP1136159B1 (en) Rotation independent activating means of a machine part
DE3519533C2 (en)
DE3511645C2 (en) Road working machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20221025

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230719

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED