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EP0813918A2 - High-pressure nozzle for a high-pressure cleaning device - Google Patents

High-pressure nozzle for a high-pressure cleaning device Download PDF

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Publication number
EP0813918A2
EP0813918A2 EP97109832A EP97109832A EP0813918A2 EP 0813918 A2 EP0813918 A2 EP 0813918A2 EP 97109832 A EP97109832 A EP 97109832A EP 97109832 A EP97109832 A EP 97109832A EP 0813918 A2 EP0813918 A2 EP 0813918A2
Authority
EP
European Patent Office
Prior art keywords
pressure
nozzle
receiving body
jet
regulating ring
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.)
Granted
Application number
EP97109832A
Other languages
German (de)
French (fr)
Other versions
EP0813918A3 (en
EP0813918B1 (en
Inventor
Arthur Dipl.Ing. Rau (Fh)
Bernd Winkler
Thorsten Dipl.-Ing. Krüger
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.)
WAP Reinigungssysteme GmbH and Co
Original Assignee
WAP Reinigungssysteme GmbH and Co
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 WAP Reinigungssysteme GmbH and Co filed Critical WAP Reinigungssysteme GmbH and Co
Publication of EP0813918A2 publication Critical patent/EP0813918A2/en
Publication of EP0813918A3 publication Critical patent/EP0813918A3/en
Application granted granted Critical
Publication of EP0813918B1 publication Critical patent/EP0813918B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head

Definitions

  • the invention relates to a high-pressure nozzle for a high-pressure cleaning device according to the preamble of patent claim 1.
  • the invention is therefore based on the object of developing a high-pressure nozzle of the type mentioned in such a way that when the pressure is reduced, the amount of water released is not simultaneously reduced.
  • the invention is characterized by the technical teaching of claim 1.
  • An essential feature of the invention is that in the area of a central inner bore of a nozzle receiving body, a spring-loaded nozzle body rests axially displaceably in the flow direction of the water against a contact surface of a regulating ring, and that the nozzle body bears in the opposite direction of flow to a conical contact surface of the nozzle receiving body, so that it is spring-loaded between the contact surface of the regulating ring and the associated contact surface of the nozzle receptacle body is displaceable and that the regulating ring is also screwed onto the nozzle receptacle body with an axial thread and into the receptacle body in which surrounds the nozzle body and which is arranged in the nozzle receiving body, bypass holes emanate which penetrate the nozzle body and which open into the front part of the high-pressure nozzle in addition to the high-pressure calibration bore of the nozzle body.
  • the regulating ring which is used for pressure regulation, is additionally connected to a device for widening or changing the shape of the ejected water jet. It is a non-rotatable connection between the pressure regulating ring and the device for expanding the water jet, in which case a rotating sleeve is connected in a rotationally fixed manner to the previously mentioned pressure regulating ring. In this way it is possible to turn the Pressure regulating ring to change the pressure, whereby the rotating sleeve for expanding the water jet also rotates.
  • the shape of the water jet is also changed. It is provided that so-called guide blades are present in the interior of the rotary sleeve, the mutual distance between the guide blades being variable by rotation on the rotary sleeve.
  • the high pressure jet passes through the space between the guide blades and the distance between the guide blades is changed so that the high pressure jet is more or less enclosed between the guide blades and thereby limited or expanded. In this way, a round jet can be made into a flat jet and the beam characteristics can be changed accordingly.
  • the high-pressure nozzle essentially consists of a lance tube 1, which is connected to the shut-off gun via a bayonet coupling 2.
  • an inner tube 3 is inserted into the lance tube 1 in a sealed manner via sealing rings 5 and is covered on the outside by plastic grip shells 6.
  • the inner tube 3 extends, sealed via the sealing rings 5 mentioned, into a nozzle receiving body 4, which nozzle receiving body 4 forms a fixed part. It is, moreover, sealed by sealing rings 9, surrounded by a rotatable regulating ring 8, which has a scale ring 7, to which a fixed mark 44 on one of the plastic grips 6 is assigned.
  • a first display area 28 corresponds to a pressure area in which a chemical solution can be drawn in via the high-pressure lance, a very low pressure being required, but a relatively constant amount of water.
  • the left area of the display wedge 26 corresponds to a low pressure with a certain amount of water
  • the right area the maximum pressure of z. B. corresponds to 150 bar, at which the same amount of water is also dispensed.
  • the advantage of this measure is that, for example, the Venturi nozzle intended for dispensing the chemical solution is always flowed through with the same constant water flow, regardless of the pressure of the dispensed water.
  • a groove 11 is worked into the nozzle receiving body 4, into which a stop screw 10 engages. In this way it is ensured that the regulating ring 8 can only be rotated through 360 ° around the nozzle receiving body 4.
  • a pressure chamber 17 is arranged in the central interior of the nozzle receiving body 4, in which a nozzle body 12 is arranged so as to be axially adjustable in a spring-loaded manner.
  • the compression spring 13 is supported on a shoulder 23 of the nozzle body 12 and presses it with a conical contact surface against an associated conical contact surface 24 in the region of the regulating ring 8.
  • the high-pressure water flows through the inner tube 3 and the pressure chamber 15 into the central inner bore of the nozzle body 12, flows through the pressure chamber 20 of the nozzle body 12 and then flows through the calibration bore 19 into the outer pressure chamber of the bore 25.
  • bypass bores 16 in the nozzle body 12 lead parallel to the calibration bore 19 into the central discharge bore 25.
  • an enlarged one arrives Amount of water in the bypass to the central calibration bore 19 via the bypass bores 16 into the bore 25.
  • a rotating sleeve 29 is connected to the regulating ring 8 via pins 31, an inner part 32 being present which is arranged in the central recess 30 of the rotating sleeve 29.
  • the inner part 32 is fixed in relation to the rotating sleeve 29. In this case, it rests on the front end face of the nozzle holder body 4 by means of sealing rings.
  • guide blades 33, 34 are resiliently supported on one side, forming an intermediate space 35 between them according to FIG. 2, through which the high-pressure jet emerges from the calibration bore 19.
  • each guide leaf 33, 34 is connected to a respective guide part 41, 42, with each guide part 41, 42 having a radially outward-facing extension 36, 37 which interacts with an associated eccentric curve 38, 39.
  • the eccentric curve is formed on the inside of the rotating sleeve 29 and has radial stops 40 for limiting the angle of rotation of the rotation of the rotating sleeve 29 in relation to the fixed inner part 32.

Landscapes

  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The high pressure jet has a jet receiving body (4), round which there is an adjusting ring (8). The ring can be moved axially relative to the body. There is an axially spring-loaded jet body (12) inside the jet receiving body, in which there is a central passage (19,20) for the pressurised fluid and at least one bypass boring (16). The jet body is on one side against a resting surface (24) of the adjusting ring, and on the other side against that of the jet receiving body. It moves with the ring when the ring is moved, so that the endface of the jet body lifts off the resting surface of the jet receiving body and opens up passage for the pressurise fluid through the bypass boring.

Description

Die Erfindung betrifft eine Hochdruckdüse für ein Hochdruckreinigungsgerät nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a high-pressure nozzle for a high-pressure cleaning device according to the preamble of patent claim 1.

Bei den bisher bekannten Hochdruckdüsen besteht der Nachteil, daß bei der Verstellung des Arbeitsdruckes auch die durchfließende Wassermenge in unerwünschter Weise verstellt wird. Insbesondere wenn man einen niedrigeren Druck einstellen will, besteht der Nachteil, daß auch die Wassermenge vermindert wird.In the previously known high-pressure nozzles, there is the disadvantage that the amount of water flowing through is also undesirably adjusted when the working pressure is adjusted. Especially if you want to set a lower pressure, there is the disadvantage that the amount of water is also reduced.

Damit besteht also der Nachteil, daß bei eingestelltem niedrigeren Druck die Schwemmwirkung des von der Hochdruckdüse abgegebenen Wassers vermindert wird.Thus there is the disadvantage that, when the lower pressure is set, the floating effect of the water discharged from the high-pressure nozzle is reduced.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Hochdruckdüse der eingangs genannten Art so weiterzubilden, daß bei einer Verminderung des Druckes nicht auch gleichzeitig die abgegebenen Wassermenge vermindert wird.The invention is therefore based on the object of developing a high-pressure nozzle of the type mentioned in such a way that when the pressure is reduced, the amount of water released is not simultaneously reduced.

Zur Lösung der gestellten Aufgabe ist die Erfindung durch die technische Lehre des Anspruches 1 gekennzeichnet.To achieve the object, the invention is characterized by the technical teaching of claim 1.

Wesentliches Merkmal der Erfindung ist, daß im Bereich einer zentralen Innenbohrung eines Düsenaufnahmekörpers ein federbelasteter Düsenkörper axial verschiebbar in Strömungsrichtung des Wassers gegen eine Anlagefläche eines Regulierungsringes anliegt, und daß ferner der Düsenkörper in Strömungsgegenrichtung an einer konischen Anlagefläche des Düsenaufnahmekörpers anliegt, so daß er federbelastet zwischen der Anlagefläche des Regulierungsringes und der zugeordneten Anlagefläche des Düsenaufnahmekörpers verschiebbar ist und daß ferner der Regulierungsring mit einem axialen Gewinde auf dem Düsenaufnahmekörper aufgeschraubt und zu dem Aufnahmekörper in der den Düsenkörper umgibt und der in dem Düsenaufnahmekörper angeordnet ist, Bypassbohrungen ausgehen, die den Düsenkörper durchsetzen und die neben der Hochdruckkalibrierbohrung des Düsenkörpers in den Vorderteil der Hochdruckdüse münden.An essential feature of the invention is that in the area of a central inner bore of a nozzle receiving body, a spring-loaded nozzle body rests axially displaceably in the flow direction of the water against a contact surface of a regulating ring, and that the nozzle body bears in the opposite direction of flow to a conical contact surface of the nozzle receiving body, so that it is spring-loaded between the contact surface of the regulating ring and the associated contact surface of the nozzle receptacle body is displaceable and that the regulating ring is also screwed onto the nozzle receptacle body with an axial thread and into the receptacle body in which surrounds the nozzle body and which is arranged in the nozzle receiving body, bypass holes emanate which penetrate the nozzle body and which open into the front part of the high-pressure nozzle in addition to the high-pressure calibration bore of the nozzle body.

Mit der gegebenen technischen Lehre wird erreicht, daß durch Verdrehung des Regulierringes es nun möglich ist, den Düsenkörper von einer Anlagefläche am Düsenaufnahmekörper abzuheben, wodurch nun das Hochdruckmedium nicht mehr nur alleine durch die zentrale Mittenbohrung des Düsenkörpers strömt, sondern im Bypass zu dieser zentralen Mittenbohrung durch entsprechende seitliche am Düsenkörper und den Düsenkörper durchsetzende Bypassbohrungen strömt und die zentrale Düse umströmt.With the given technical teaching it is achieved that by turning the regulating ring it is now possible to lift the nozzle body from a contact surface on the nozzle receiving body, as a result of which the high-pressure medium no longer flows solely through the central center hole of the nozzle body, but in the bypass to this central center hole flows through corresponding lateral bypass holes on the nozzle body and the nozzle body and flows around the central nozzle.

Damit ergibt sich der Vorteil, daß man nun den Druck dadurch verringert, daß man im Bypass zu der Hochdruckdüse zusätzliches Wasser an der Hochdruckdüse vorbei führt und hierdurch der Druck insgesamt sinkt, die Wassermenge aber konstant bleibt.This has the advantage that the pressure is now reduced by passing additional water past the high-pressure nozzle in the bypass to the high-pressure nozzle, and as a result the pressure drops overall, but the amount of water remains constant.

Auf diese Weise wird also vermieden, daß bei Verringerung des Druckes auch die Wassermenge verringert wird, weil bei Verringerung des Druckes die Bypassöffnungen geöffnet werden und das Hochdruckmedium nicht nur durch die zentrale Innenbohrung des Düsenkörpers sondern auch durch die den Düsenkörper umgebenden Bypassbohrungen in die zentrale Ausstoßbohrungen des Lanzenrohres fließt.In this way, it is avoided that when the pressure is reduced, the amount of water is also reduced, because when the pressure is reduced, the bypass openings are opened and the high-pressure medium not only through the central inner bore of the nozzle body but also through the bypass bores surrounding the nozzle body into the central discharge bores of the lance tube flows.

In einer Weiterbildung der vorliegenden Erfindung ist es vorgesehen, daß der Regulierungsring, der zur Druckregulierung dient, noch zusätzlich mit einer Vorrichtung zur Aufweitung bzw. Formänderung des ausgestoßenen Wasserstrahles verbunden ist. Es handelt sich um eine drehfeste Verbindung zwischen dem Druckregulierungsring und der Vorrichtung zur Aufweitung des Wasserstrahls, wobei in diesem Fall eine Drehhülse drehfest mit dem vorher erwähnten Druckregulierungsring verbunden ist. Auf diese Weise ist es möglich, durch alleiniges Drehen am Druckregulierungsring den Druck zu verändern, wobei sich die Drehhülse für die Aufweitung des Wasserstrahls mitdreht.In a further development of the present invention, it is provided that the regulating ring, which is used for pressure regulation, is additionally connected to a device for widening or changing the shape of the ejected water jet. It is a non-rotatable connection between the pressure regulating ring and the device for expanding the water jet, in which case a rotating sleeve is connected in a rotationally fixed manner to the previously mentioned pressure regulating ring. In this way it is possible to turn the Pressure regulating ring to change the pressure, whereby the rotating sleeve for expanding the water jet also rotates.

Wenn man den Druckregulierungsring festhält und statt dessen die Drehhülse für die Wasserstrahlaufweitung dreht, wird noch zusätzlich die Form des Wasserstrahles verändert. Hierbei ist vorgesehen, daß im Innenraum der Drehhülse sogenannte Führungsblätter vorhanden sind, wobei der gegenseitige Abstand der Führungsblätter durch Drehung an der Drehhülse veränderbar ist. Der Hochdruckstrahl läuft durch den Zwischenraum zwischen den Führungsblättern hindurch und es wird der Abstand zwischen den Führungsblättern verändert, so daß der Hochdruckstrahl mehr oder weniger zwischen den Führungsblättern eingeschlossen und dadurch begrenzt oder aufgeweitet wird. Auf diese Weise kann aus einem Rundstrahl ein Flachstrahl gemacht werden und entsprechend die Strahlcharakteristik verändert werden.If you hold the pressure regulating ring and instead turn the rotating sleeve for the water jet expansion, the shape of the water jet is also changed. It is provided that so-called guide blades are present in the interior of the rotary sleeve, the mutual distance between the guide blades being variable by rotation on the rotary sleeve. The high pressure jet passes through the space between the guide blades and the distance between the guide blades is changed so that the high pressure jet is more or less enclosed between the guide blades and thereby limited or expanded. In this way, a round jet can be made into a flat jet and the beam characteristics can be changed accordingly.

Der Erfindungsgegenstand der vorliegenden Erfindung ergibt sich nicht nur aus dem Gegenstand der einzelnen Patentansprüche, sondern auch aus der Kombination der einzelnen Patentansprüche untereinander. Alle in den Unterlagen, einschließlich der Zusammenfassung, offenbarten Angaben und Merkmale, insbesondere die in den Zeichnungen dargestellte räumliche Ausbildung werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another. All of the information and features disclosed in the documents, including the summary, in particular the spatial design shown in the drawings are claimed to be essential to the invention, insofar as they are new to the prior art, individually or in combination.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert. Hierbei gehen aus den Zeichnungen und ihrer Beschreibung weitere erfindungswesentliche Merkmale und Vorteile der Erfindung hervor.The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Here, from the drawings and their description, further features and advantages of the invention that are essential to the invention emerge.

Es zeigen:

Figur 1:
Schnitt durch eine Hochdruckdüse nach der Erfindung;
Figur 2:
Draufsicht auf das hochdruckseitige Ende der Hochdruckdüse in Richtung des Pfeiles II;
Figur 3:
Abwicklung des Skalenringes der Hochdruckdüse auf der Zeichenebene.
Show it:
Figure 1:
Section through a high pressure nozzle according to the invention;
Figure 2:
Top view of the high-pressure end of the high-pressure nozzle in the direction of arrow II;
Figure 3:
Development of the scale ring of the high pressure nozzle on the drawing level.

Die Hochdruckdüse besteht im wesentlichen aus einem Lanzenrohr 1, welches über eine Bajonettkupplung 2 mit der Abschaltpistole verbunden ist.The high-pressure nozzle essentially consists of a lance tube 1, which is connected to the shut-off gun via a bayonet coupling 2.

In das Lanzenrohr 1 ist hierbei abgedichtet über Dichtringe 5, ein Innenrohr 3 eingesteckt, welches nach außen über Kunststoffgriffschalen 6 abgedeckt ist. Das Innenrohr 3 reicht, abgedichtet über die erwähnten Dichtringe 5, in einen Düsenaufnahmekörper 4, welcher Düsenaufnahmekörper 4 ein feststehendes Teil bildet. Er ist im übrigen, über Dichtringe 9 abgedichtet, von einem drehbaren Regulierungsring 8 umgeben, der einen Skalenring 7 aufweist, dem eine feststehende Marke 44 auf einer der Kunststoffgriffschalen 6 zugeordnet ist.In this case, an inner tube 3 is inserted into the lance tube 1 in a sealed manner via sealing rings 5 and is covered on the outside by plastic grip shells 6. The inner tube 3 extends, sealed via the sealing rings 5 mentioned, into a nozzle receiving body 4, which nozzle receiving body 4 forms a fixed part. It is, moreover, sealed by sealing rings 9, surrounded by a rotatable regulating ring 8, which has a scale ring 7, to which a fixed mark 44 on one of the plastic grips 6 is assigned.

In Figur 3 erkennt man, daß der Skalenring 7 verschiedene Anzeigebereiche hat. Ein erster Anzeigebereich 28 entspricht einem Druckbereich, bei dem eine Chemielösung über die Hochdrucklanze angesaugt werden kann, wobei ein sehr niedriger Druck benötigt wird, aber eine relativ gleichbleibende Wassermenge.In Figure 3 it can be seen that the scale ring 7 has different display areas. A first display area 28 corresponds to a pressure area in which a chemical solution can be drawn in via the high-pressure lance, a very low pressure being required, but a relatively constant amount of water.

Wichtig ist, daß die durch die Düse fließende Wassermenge über den gesamten Verstellbereich des Skalenringes 7 gleichbleibt, d. h. also nicht nur über den Anzeigebereich 28, sondern auch über den Anzeigekeil 26 mit den weiteren Druckbereichen 27.It is important that the amount of water flowing through the nozzle remains constant over the entire adjustment range of the scale ring 7, i. H. thus not only via the display area 28, but also via the display wedge 26 with the further printing areas 27.

Der linke Bereich des Anzeigekeils 26 entspricht einem geringen Druck bei einer bestimmten Wassermenge, wobei der rechte Bereich dem Höchstdruck von z. B. 150 bar entspricht, bei dem ebenfalls die gleiche Wassermenge abgegeben wird.The left area of the display wedge 26 corresponds to a low pressure with a certain amount of water, the right area the maximum pressure of z. B. corresponds to 150 bar, at which the same amount of water is also dispensed.

Vorteil dieser Maßnahme ist, daß beispielsweise die zur Abgabe der Chemielösung bestimmte Venturidüse stets mit dem konstant gleichen Wasserstrom durchflossen wird, unabhängig von dem Druck des abgegebenen Wassers.The advantage of this measure is that, for example, the Venturi nozzle intended for dispensing the chemical solution is always flowed through with the same constant water flow, regardless of the pressure of the dispensed water.

Zur Drehbegrenzung des Regulierungsringes 8 ist in dem Düsenaufnahmekörper 4 eine Nut 11 eingearbeitet, in welche eine Anschlagschraube 10 eingreift. Auf diese Weise wird sichergestellt, daß der Regulierungsring 8 nur um 360° um den Düsenaufnahmekörper 4 verdreht werden kann.In order to limit the rotation of the regulating ring 8, a groove 11 is worked into the nozzle receiving body 4, into which a stop screw 10 engages. In this way it is ensured that the regulating ring 8 can only be rotated through 360 ° around the nozzle receiving body 4.

Wichtig ist nun, daß in dem zentralen Innenraum des Düsenaufnahmekörpers 4 ein Druckraum 17 angeordnet ist, in dem axial verstellbar ein Düsenkörper 12 federbelastet angeordnet ist. Die Druckfeder 13 stützt sich an einer Schulter 23 des Düsenkörpers 12 ab und preßt diesen mit einer konischen Anlagefläche an eine zugeordnete konische Anlagefläche 24 im Bereich des Regulierungsringes 8.It is now important that a pressure chamber 17 is arranged in the central interior of the nozzle receiving body 4, in which a nozzle body 12 is arranged so as to be axially adjustable in a spring-loaded manner. The compression spring 13 is supported on a shoulder 23 of the nozzle body 12 and presses it with a conical contact surface against an associated conical contact surface 24 in the region of the regulating ring 8.

In der hier dargestellten Stellung strömt das Hochdruckwasser über das Innenrohr 3 und den Druckraum 15 in die zentrale Innenbohrung des Düsenkörpers 12 hinein, durchströmt den Druckraum 20 des Düsenkörpers 12 und strömt dann durch die Kalibrierbohrung 19 in den äußeren Druckraum der Bohrung 25.In the position shown here, the high-pressure water flows through the inner tube 3 and the pressure chamber 15 into the central inner bore of the nozzle body 12, flows through the pressure chamber 20 of the nozzle body 12 and then flows through the calibration bore 19 into the outer pressure chamber of the bore 25.

Wird hingegen der Regulierungsring 8 gedreht, dann erfolgt eine axiale Verschiebung des Regulierringes 8 in Bezug zu dem feststehenden Düsenaufnahmekörper 4 in Richtung 21 dadurch, daß der Regulierungsring auf einem entsprechenden Gewinde 43 zwischen dem Regulierungsring und dem Düsenaufnahmekörper axial verstellbar gehalten ist. In diesem Fall stützt sich aufgrund der Federbelastung, der Düsenkörper 12 weiterhin an der Anlagefläche 24 des Regulierungsring 8 ab, gleichzeitig hebt aber der Düsenkörper 12 von der zugeordneten konischen Anlagefläche 14 an der Innenseite des Düsenaufnahmekörpers 4 ab. Hierdurch gelangt nun Wasser aus dem Druckraum 15 nicht mehr allein nur in den Druckraum 20 des Düsenkörpers, sondern darüber hinaus noch in den im Bypass angeordneten Druckraum 17. Aus diesem Druckraum 17 führen Bypassbohrungen 16 im Düsenkörper 12 parallel zu der Kalibrierbohrung 19 in die zentrale Ausstoßbohrung 25. Dadurch gelangt beim Abheben des Düsenkörpers 12 von der Konusfläche 14, eine vergrößerte Wassermenge im Bypass zu der zentralen Kalibrierbohrung 19 über die Bypassbohrungen 16 in die Bohrung 25.However, if the regulating ring 8 is rotated, then there is an axial displacement of the regulating ring 8 with respect to the fixed nozzle receiving body 4 in the direction 21 in that the regulating ring is held axially adjustable on a corresponding thread 43 between the regulating ring and the nozzle receiving body. In this case, due to the spring load, the nozzle body 12 is still supported on the contact surface 24 of the regulating ring 8, but at the same time the nozzle body 12 lifts off from the associated conical contact surface 14 on the inside of the nozzle holder body 4. As a result, water from the pressure chamber 15 now no longer only goes into the pressure chamber 20 of the nozzle body, but also into the pressure chamber 17 arranged in the bypass. From this pressure chamber 17, bypass bores 16 in the nozzle body 12 lead parallel to the calibration bore 19 into the central discharge bore 25. As a result, when the nozzle body 12 is lifted off the conical surface 14, an enlarged one arrives Amount of water in the bypass to the central calibration bore 19 via the bypass bores 16 into the bore 25.

Dadurch wird der Druck kontinuierlich vermindert, wobei die durchfließende Wassermenge gleich bleibt.As a result, the pressure is continuously reduced while the amount of water flowing through remains the same.

Im folgenden wird nun die Strahlverstellung des Wasserstrahles näher beschrieben. Eine Drehhülse 29 ist über Stifte 31 mit dem Regulierungsring 8 verbunden, wobei ein Innenteil 32 vorhanden ist, welches in der zentralen Ausnehmung 30 der Drehhülse 29 angeordnet ist. Das Innenteil 32 ist feststehend in Bezug zu der Drehhülse 29 ausgebildet. Es legt sich hierbei mittels Dichtringen an der vorderen Stirnseite des Düsenaufnahmekörpers 4 an. Im Innenteil 32 sind Führungsblätter 33, 34 einseitig federnd gelagert, die zwischen sich gemäß Figur 2 einen Zwischenraum 35 bilden, durch den der Hochdruckstrahl aus der Kalibrierbohrung 19 heraustritt. Wird nun der Abstand (das Maß des Zwischenraumes 35) zwischen den Führungsblättern 33, 34 verändert, dann kann aus dem austretenden Rundstrahl ein entsprechender Breitstrahl erzeugt werden. Hierzu ist vorgesehen, daß jedes Führungsblatt 33, 34 mit jeweils einem Führungsteil 41, 42 verbunden ist, wobei an jedem Führungsteil 41, 42 ein radial auswärts weisender Ansatz 36, 37 angeordnet ist, der mit einer zugeordneten Exzenterkurve 38, 39 zusammenwirkt. Die Exzenterkurve ist an der Innenseite der Drehhülse 29 ausgebildet und weist radiale Anschläge 40 auf zur Drehwinkelbegrenzung der Verdrehung der Drehhülse 29 in Bezug zu dem feststehenden Innenteil 32.The jet adjustment of the water jet is now described in more detail below. A rotating sleeve 29 is connected to the regulating ring 8 via pins 31, an inner part 32 being present which is arranged in the central recess 30 of the rotating sleeve 29. The inner part 32 is fixed in relation to the rotating sleeve 29. In this case, it rests on the front end face of the nozzle holder body 4 by means of sealing rings. In the inner part 32, guide blades 33, 34 are resiliently supported on one side, forming an intermediate space 35 between them according to FIG. 2, through which the high-pressure jet emerges from the calibration bore 19. If the distance (the size of the intermediate space 35) between the guide blades 33, 34 is changed, a corresponding wide jet can be generated from the omnidirectional jet. For this purpose, it is provided that each guide leaf 33, 34 is connected to a respective guide part 41, 42, with each guide part 41, 42 having a radially outward-facing extension 36, 37 which interacts with an associated eccentric curve 38, 39. The eccentric curve is formed on the inside of the rotating sleeve 29 and has radial stops 40 for limiting the angle of rotation of the rotation of the rotating sleeve 29 in relation to the fixed inner part 32.

Erfolgt nun eine Drehung der Drehhülse 29, dann gleiten die Ansätze 36, 37 an der Innenseite der Exzenterkurven 38, 39 entlang, wodurch die Führungsteile 41, 42 radial einwärts verstellt werden und der Abstand (Zwischenraum 35) entsprechend vermindert wird.If the rotating sleeve 29 now rotates, the shoulders 36, 37 slide along the inside of the eccentric curves 38, 39, as a result of which the guide parts 41, 42 are adjusted radially inwards and the distance (intermediate space 35) is reduced accordingly.

Auf diese Weise ist es möglich, unabhängig von der Einstellung des Druckes einen Breitstrahl oder einen Rundstrahl herzustellen.In this way it is possible to produce a wide jet or an omnidirectional jet regardless of the setting of the pressure.

ZEICHNUNGSLEGENDEDRAWING LEGEND

1.1.
LanzenrohrLance tube
2.2nd
BajonettkupplungBayonet coupling
3.3rd
InnenrohrInner tube
4.4th
DüsenaufnahmekörperNozzle holder body
5.5.
DichtringSealing ring
6.6.
KunststoffgriffschalePlastic grip shell
7.7.
SkalenringScale ring
8.8th.
RegulierungsringRegulation ring
9.9.
DichtringSealing ring
10.10th
AnschlagschraubeStop screw
11.11.
NutGroove
12.12th
DüsenkörperNozzle body
13.13.
DruckfederCompression spring
14.14.
KonusflächeConical surface
15.15.
DruckraumPressure room
16.16.
BypassbohrungBypass hole
17.17th
DruckraumPressure room
18.18th
DichtringSealing ring
19.19th
KalibrierbohrungCalibration hole
20.20th
DruckraumPressure room
21.21.
PfeilrichtungArrow direction
23.23.
Schultershoulder
24.24th
AnlageflächeContact surface
25.25th
Bohrungdrilling
2626
AnzeigekeilDisplay wedge
27.27.
DruckbereichePressure ranges
2828
AnzeigebereichDisplay area
29.29.
DrehülseRotating sleeve
30.30th
AusnehmungRecess
31.31
Stiftepencils
32.32.
Innenteilinner part
33.33.
FührungsblattLeader sheet
34.34.
FührungsblattLeader sheet
3535
ZwischenraumSpace
36.36.
Ansatzapproach
37.37.
Ansatzapproach
38.38.
ExzenterkurveEccentric curve
39.39.
ExzenterkurveEccentric curve
40.40.
Anschlagattack
41.41.
FührungsteilGuide part
42.42.
FührungsteilGuide part
43.43.
Gewindethread
44.44.
Markebrand

Claims (7)

Hochdruckdüse für ein Hochdruckreinigungsgerät, mit Verstellmöglichkeit für den Arbeitsdruck eines die Düse durchströmenden Druckmediums, gekennzeichnet durch: einen Düsenaufnahmekörper (4) umgeben von einem Regulierungsring (8), welcher gegenüber dem Düsenaufnahmekörper (4) axial verschiebbar ist, einen in axialer Richtung federbelasteten Düsenkörper (12), der innerhalb des Düsenaufnahmekörpers (4) angeordnet ist, mit einem zentralen Durchlaß (19,20) für das Druckmedium und wenigstens einer Bypassbohrung (16), wobei der Düsenkörper (12) einerseits gegen eine Anlagefläche (24) des Verstellringes (8) andererseits gegen eine Anlagefläche (14) des Düsenaufnahmekörper (4) anliegt und sich bei Verschiebung des Regulierungsrings (8) mitverschiebt, so daß die Stirnfläche des Düsenkörpers (12) von der zugeordneten Anlagefläche (14) des Düsenaufnahmekörpers (4) abhebt und den Durchtritt des Druckmediums durch die Bypassbohrung (16) freigibt. High-pressure nozzle for a high-pressure cleaning device, with adjustment option for the working pressure of a pressure medium flowing through the nozzle, characterized by : a nozzle receiving body (4) surrounded by a regulating ring (8) which is axially displaceable relative to the nozzle receiving body (4), an axially spring-loaded nozzle body (12), which is arranged inside the nozzle receiving body (4), with a central passage (19, 20) for the pressure medium and at least one bypass bore (16), the nozzle body (12) on the one hand against a contact surface (24) of the adjusting ring (8), on the other hand, bears against a contact surface (14) of the nozzle receiving body (4) and also moves when the regulating ring (8) is displaced, so that the end face of the nozzle body (12) from the associated contact surface (14) of the nozzle receiving body (4) lifts off and releases the passage of the pressure medium through the bypass bore (16). Hochdruckdüse nach Anspruch 1, dadurch gekennzeichnet, daß der Regulierungsring (8) über ein Gewinde (43) drehbar am Düsenaufnahmekörper (4) angeordnet ist und sich bei Drehung in axialer Richtung (21) verschiebt.High-pressure nozzle according to Claim 1, characterized in that the regulating ring (8) is rotatably arranged on the nozzle receiving body (4) via a thread (43) and is displaced in the axial direction (21) upon rotation. Hochdruckdüse nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Regulierungsring (8) mit einer Drehhülse (29) verbunden ist, in deren zentraler Ausnehmung (30) ein feststehendes Innenteil (32) vorgesehen ist, an welchem Führungsblätter (33,34) einseitig federnd gelagert sind.High-pressure nozzle according to one of claims 1 or 2, characterized in that the regulating ring (8) is connected to a rotating sleeve (29), in the central recess (30) of which a fixed inner part (32) is provided, on which guide blades (33, 34 ) are spring-loaded on one side. Hochdruckdüse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen den Führungsblätter (33,34) ein Zwischenraum (35) für den Austritt des Druckmediums vorhanden ist.High-pressure nozzle according to one of Claims 1 to 3, characterized in that there is an intermediate space (35) between the guide blades (33, 34) for the outlet of the pressure medium. Hochdruckdüse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jedes Führungsblatt (33,34) ein Führungsteil (41,42) aufweist, das mit einem Ansatz (36,37) an einer zugeordneten, an der Innenseite der Drehhülse (29) ausgebildeten Exzenterkurve (38,39) anliegt.High-pressure nozzle according to one of Claims 1 to 4, characterized in that each guide blade (33, 34) has a guide part (41, 42) which is provided with an extension (36, 37) on an associated, on the inside of the rotating sleeve (29) trained eccentric curve (38.39). Hochdruckdüse nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Ansätze (36,37) durch Verdrehen der Drehhülse (29) an den Exzenterkurven (38,39) entlanggleiten und dadurch die Breite des Zwischenraums (35) verändern.High-pressure nozzle according to one of Claims 1 to 5, characterized in that the lugs (36, 37) slide along the eccentric curves (38, 39) by rotating the rotating sleeve (29) and thereby change the width of the intermediate space (35). Hochdruckdüse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Drehhülse (29) radiale Anschläge (40) zur Drehwinkelbegrenzung aufweist.High-pressure nozzle according to one of claims 1 to 6, characterized in that the rotary sleeve (29) has radial stops (40) for limiting the angle of rotation.
EP97109832A 1996-06-19 1997-06-17 High-pressure nozzle for a high-pressure cleaning device Expired - Lifetime EP0813918B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624333A DE19624333A1 (en) 1996-06-19 1996-06-19 High pressure nozzle for a high pressure cleaning device
DE19624333 1996-06-19

Publications (3)

Publication Number Publication Date
EP0813918A2 true EP0813918A2 (en) 1997-12-29
EP0813918A3 EP0813918A3 (en) 1998-07-01
EP0813918B1 EP0813918B1 (en) 2002-02-27

Family

ID=7797293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109832A Expired - Lifetime EP0813918B1 (en) 1996-06-19 1997-06-17 High-pressure nozzle for a high-pressure cleaning device

Country Status (3)

Country Link
EP (1) EP0813918B1 (en)
AT (1) ATE213668T1 (en)
DE (2) DE19624333A1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2016031612A1 (en) * 2014-08-25 2016-03-03 日立工機株式会社 Cleaning machine nozzle and cleaning machine
US10173230B2 (en) 2014-09-11 2019-01-08 Mtm Hydro S.R.L. Foam generating device for a high-pressure water gun
JP7034352B1 (en) * 2021-03-25 2022-03-11 株式会社スギノマシン nozzle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007014A1 (en) * 2012-04-05 2013-10-10 Anton Jäger Cleaning device for cleaning e.g. solar or photovoltaic bearing surface, has pivot and rotation limiting device that are provided at portions of the steering element

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US3746262A (en) * 1971-10-12 1973-07-17 Bete Fog Nozzle Inc Spray nozzle
US4886213A (en) * 1983-11-25 1989-12-12 K.E.W. Industri A/S Ejection nozzle for high-pressure cleaning units
DE4020737C1 (en) * 1990-06-29 1991-08-29 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
EP0501164A1 (en) * 1991-02-11 1992-09-02 FAIP S.r.L. OFFICINE MECCANICHE Ejection nozzle device for high pressure cleaning apparatus

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Publication number Priority date Publication date Assignee Title
DE2906648C3 (en) * 1979-02-21 1981-09-10 Alfred Kärcher GmbH & Co, 7057 Winnenden Spray nozzle arrangement for high pressure cleaning devices

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Publication number Priority date Publication date Assignee Title
DE1864293U (en) * 1961-02-02 1962-12-20 Apa Kg Bauder Otto HOSE MOUTH PIECE.
US3746262A (en) * 1971-10-12 1973-07-17 Bete Fog Nozzle Inc Spray nozzle
US4886213A (en) * 1983-11-25 1989-12-12 K.E.W. Industri A/S Ejection nozzle for high-pressure cleaning units
DE4020737C1 (en) * 1990-06-29 1991-08-29 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
EP0501164A1 (en) * 1991-02-11 1992-09-02 FAIP S.r.L. OFFICINE MECCANICHE Ejection nozzle device for high pressure cleaning apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016031612A1 (en) * 2014-08-25 2016-03-03 日立工機株式会社 Cleaning machine nozzle and cleaning machine
US10173230B2 (en) 2014-09-11 2019-01-08 Mtm Hydro S.R.L. Foam generating device for a high-pressure water gun
DE112015004184B4 (en) 2014-09-11 2019-06-19 Mtm Hydro S.R.L. Foaming device for a high-pressure water gun
US10562049B2 (en) 2014-09-11 2020-02-18 Mtm Hydro S.R.L. Foam generating device for a high-pressure water gun
JP7034352B1 (en) * 2021-03-25 2022-03-11 株式会社スギノマシン nozzle

Also Published As

Publication number Publication date
DE19624333A1 (en) 1998-01-08
EP0813918A3 (en) 1998-07-01
EP0813918B1 (en) 2002-02-27
ATE213668T1 (en) 2002-03-15
DE59706473D1 (en) 2002-04-04

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