EP0300327B1 - High pressure press-in connection - Google Patents

High pressure press-in connection Download PDF

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Publication number
EP0300327B1
EP0300327B1 EP88111089A EP88111089A EP0300327B1 EP 0300327 B1 EP0300327 B1 EP 0300327B1 EP 88111089 A EP88111089 A EP 88111089A EP 88111089 A EP88111089 A EP 88111089A EP 0300327 B1 EP0300327 B1 EP 0300327B1
Authority
EP
European Patent Office
Prior art keywords
fitting
press
piece
hose
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88111089A
Other languages
German (de)
French (fr)
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EP0300327A3 (en
EP0300327A2 (en
Inventor
Rainer Oberdorfer-Bögel
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
Priority to AT88111089T priority Critical patent/ATE63844T1/en
Publication of EP0300327A2 publication Critical patent/EP0300327A2/en
Publication of EP0300327A3 publication Critical patent/EP0300327A3/en
Application granted granted Critical
Publication of EP0300327B1 publication Critical patent/EP0300327B1/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

Definitions

  • the invention relates to a high-pressure press fitting for an HP hose connection with quick screw connection on the output side of a high-pressure cleaning device.
  • the present invention is based on the object; to bypass the restrictive section which is obstructing the ventilation of the unit. This is particularly necessary if the pump has to be depressurized from a water tank or the like and has to work against the resistance of the throttle section.
  • the press fitting of the quick screw connection receiving the device-side hose end and designed as a plug part has a Venturi insert molded in the throughflow area, and on the end face a transverse bore of the device-side hose connection piece, which is formed around the outer circumference and provides chemical additives in the coupled state is communicating with the through-flow bore via a transverse bore of the press fitting.
  • the inlet cone of the venturi insert attaches to the face of the press fitting and the annular groove upstream of an annular groove receiving the clutch-sealing O-ring and also so far from the end face of the press fitting that the transverse bore is arranged in the outlet cone Venturi insert flows.
  • the press fitting is assigned a connecting nut which effects the quick screw connection and overlaps the press sleeve of the hose nipple and rotates thereon for engagement with an internal thread of the device-side connector from an external thread threaded part and a molded on this and encompassing this and in the connected state overlapping the device-side connector consists of the central bore of the connecting nut in its dimensions for the locking engagement of the inwardly angled end
  • the end of the press sleeve is designed in an annular groove formed on the press-fit fitting, and the threaded part has an end-face stop surface for bearing against one n also has an integrally formed annular collar.
  • the threaded part of the connecting nut can consist of a suitable metal and the grip part, which is designed as a protective ring, can consist of a suitable plastic.
  • the special embodiment of the connecting nut with an internal thread engaging in the device-side connecting piece also offers the advantage that, according to the invention, the transverse bore is designed for the supply of chemical additives in the one for receiving the press-fit fitting Device-side hose connection piece can be arranged outside the area of the grip part of the connection nut which overlaps in the connected state, and a hose nipple receiving the overlapping supply hose can be permanently assigned to the outside of the wall of the connection piece.
  • press-in fitting designed as a plug part and integrated with the venturi insert can be made in one piece with the hose nipple attached to it for the HP hose leading to the spray gun.
  • any combination can be connected to the outside of the device immediately without a separate injector installed on the output side of the cleaning device or built into the device, this can be a chemical injector supply or the like, as it is offered with a press fitting for a quick screw connection. It is also possible to connect an HP hose in a simple manner, i.e. without such a combination of fittings, if additives are not required.
  • FIG. 1 shows, in a compilation, a preferred embodiment of the press-in fitting 1 with quick screw connection, inserted into the connection piece 22 on the device against the stop.
  • Figures 1 and 3 show in an enlarged view again the press fitting 1 and the connecting or union nut 9 individually.
  • the connecting piece 22 which is only shown as an example, receives the fitting 1 in its bore 15.
  • an internal thread 31 is provided in the device-side connecting piece 22 and engages with an external thread 12 of the connecting nut 9.
  • the feed for the additives to be added is shown starting in the arrow direction 20 above the connecting piece 22.
  • the wall of the connecting piece 22 here has a transverse bore 17 with an outside nipple 18, via which the corresponding connecting hose 19 is applied.
  • the venturi insert 2 is completely accommodated in the fitting 1.
  • the inlet cone 23 attaches directly to the end face 25 of the fitting 1, followed downstream by the actual insert 32 and an outlet cone 24.
  • the end face 25 has an annular groove 36 formed in it for an O-ring, which, in the connected state, lies sealingly against an annular stop surface 38 of the connecting piece 22 on the device side.
  • a second recess or annular groove 26 is then introduced for an O-ring 27 which seals the annular groove 14 and which is followed by a cylindrical guide surface 35 with an annular shoulder 11, against which the connecting nut 9 is connected on the rear rests with its end face or annular end face 30 (FIG. 3).
  • the one-piece molded hose nipple 3 has a profile known per se around the circumference for receiving the high-pressure hose 5.
  • the high-pressure hose 5 is attached to an annular shoulder 7 molded onto the fitting 1 and fixed on the hose nipple 3 by means of a pressing sleeve 4, the pressing sleeve 4 with its inwardly angled front end 29 over that of the fitting 1 molded ring shoulder 7 engages in a further recess or ring groove 6, and is additionally held in this position by the connecting sleeve or union nut 9 encompassing the compression sleeve 4.
  • a known anti-kink protection 21 is applied over the high-pressure hose 5, which has a radial extension towards the fitting 1 for plugging onto the compression sleeve 4.
  • connection nut 9 For screwing the fitting 1 to the device-side connection piece 22, the connection nut 9 already mentioned is provided, which, as can be seen from FIGS. 1 and 3, consists of a threaded part 10 and one of these parts enclosing handle part 13. Threaded part 10 and grip part 13 can be made in one piece, but, as in the embodiment shown, can also be combined from different materials.
  • the threaded part 10 has a central bore 28 which is adapted in its dimensions to the press sleeve 4 on which the connecting sleeve 9 is freely rotatable. Over a length range of the threaded part 10, an external thread 12 is preferably provided for engagement with the internal thread 31 of the device-side connection piece 22.
  • the handle part 13 is made in one piece with the threaded part 10 or rigidly connected to it. Grooves 37 are formed in the rear area of the grip, over part of the circumferential surface of the grip part 12.
  • the front area of the grip part 13 is elongated and encloses the threaded area 12 of the part 10.
  • the distance between the outer diameter of the threaded area 12 of the threaded part 10 and the inner diameter of the extension of the grip piece 13 which surrounds the threaded area is selected so that the extension in the connected State of the press fitting 1 engages over the end area of the device-side connection piece 22.
  • the inner diameter of the central recess in the rear region of the grip piece 13 is matched to the outer diameter of the kink protection 21 which overlaps the compression sleeve 4 with sufficient clearance or clearance.
  • the fitting 1 which is designed as a plug part with an integrated venturi insert, is inserted into the connecting piece 22 on the device side and fixed thereto by means of the connecting nut 9, the end face 30 of the threaded part 10 , adjacent to the armature 1 formed over the circumference of the annular shoulder 11, press the valve 1 up to the stop of its end face 25 against the annular stop surface 38 of the device-side connecting piece 22.
  • valve 1 With its molded-in annular groove 14 and the transverse bore 16 leading to the outlet cone 24 of the venturi insert 2 is flush with the wall of the device-side connecting piece 22 penetrating transverse bore 17, the fitting 1 being guided and supported in the bore 15 of the connecting piece 22 by the annular shoulders 33, 34, 35 formed on the fitting 1, and the O-ring 27 guided in the annular groove 26 together with the O-ring, which is preferably arranged in the end face groove 36 and pressed against the stop face 38 of the connecting piece 22, seals the entire arrangement.
  • the hose connection fitting has the venturi insert 2 integrated, as a result of which a communicating connection which is very easy to produce can be established between a line which, for example, supplies chemical additives and the venturi insert which is integrated in the plug-shaped fitting and is also referred to as an injector .
  • the valve can be freely separated from the device, including the Venturi insert, in order to vent the unit or to support the suction effect of the pump, for example if the pump is used in suction mode, ie, is sucked in from a container whose water level is significantly lower.
  • the quick screw connection can be loosened and the HP hose can be removed from the device outlet using the venturi insert integrated in the fitting (fitting).
  • the throttle 32 in the venturi section which is integrated in the hose connection fitting 1 according to the invention, can also be replaced very easily; the inner diameter of the throttle 32 can thus be adapted to the intended use and the desired mixing ratio.
  • the end part of the press fitting 1 can also be designed to be advanced in the area of the flow bore 8, in which the inlet cone 23 is formed, in order to increase the inlet diameter if necessary.
  • Another O-ring sealing the press-in fitting 1 against the flow-through bore 8 can thereby be arranged in a groove on the correspondingly wider annular shoulder 33.

Landscapes

  • Nozzles (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Joints With Pressure Members (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Pens And Brushes (AREA)

Abstract

High-pressure, press-in fitting for a high-pressure hose connection with a quick-release screw on the output side of a high-pressure cleaning unit, characterised in that the press-in fitting of the quick release screw which holds the hose end on the equipment side and is designed as a connector part has a venturi insert formed in the flow region and, on the end face, an annular slot is provided which is formed in around the outer circumference and, in the coupled state, is aligned with a lateral hole in the equipment-side hose connecting nozzle carrying chemical additives, and which is connected in a communicating manner via a lateral hole in the press-in fitting to the flow hole. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Hochdruck-Einpreßarmatur für einen HD-Schlauchanschluß mit Quickverschraubung ausgangsseitig eines Hochdruck-Reiningungsgerätes.The invention relates to a high-pressure press fitting for an HP hose connection with quick screw connection on the output side of a high-pressure cleaning device.

Ausgehend von einem Hochdruck-Reinigungsgerät an sich bekannter Bauart mit ausgangsseitig des Aggregates angeordneter, als Chemie-Injektor bezeichneter Drosselstrecke für die Beigabe von chemischen oder anderen Zusätzen in den Pumpenstrom, liegt vorliegender Erfindung die Aufgabe zugrunde; die für die Entlüftung des Aggregates hinderliche Drosselstrecke zu umgehen. Diese Notwendigkeit besteht insbesondere dann, wenn die Pumpe aus einem Wasserkasten oder dergleichen drucklos ansaugen und gegen den Widerstand der Drosselstrecke arbeiten muß.Starting from a high-pressure cleaning device of known type with a throttle section arranged on the output side of the unit, referred to as a chemical injector, for adding chemical or other additives to the pump flow, the present invention is based on the object; to bypass the restrictive section which is obstructing the ventilation of the unit. This is particularly necessary if the pump has to be depressurized from a water tank or the like and has to work against the resistance of the throttle section.

Als erfindungsgemäße Lösung ist dafür vorgesehen, daß die das geräteseitige Schlauchende aufnehmende und als Steckerteil ausgebildete Einpreßarmatur der Quickverschraubung im Durchflußbereich einen Venturieinsatz eingeformt aufweist, und stirnseitig eine um den Außenumfang eingeformte, im gekuppelten Zustand mit einer chemische Zusätze zuführenden Querböhrung des geräteseitigen Schlauchanschlußstückes fluchtende Ringnut vorgesehen ist, die über eine Querbohrung der Einpreßarmatur mit der Durchflußbohrung kommunizierend verbunden ist.As a solution according to the invention, it is provided that the press fitting of the quick screw connection receiving the device-side hose end and designed as a plug part has a Venturi insert molded in the throughflow area, and on the end face a transverse bore of the device-side hose connection piece, which is formed around the outer circumference and provides chemical additives in the coupled state is communicating with the through-flow bore via a transverse bore of the press fitting.

Diese Lösung bietet den Vorteil, daß mittels der Quickverschraubung der ausgangsseitig des Gerätes ansetzende HD-Schlauch einschließlich der Drosselstrecke auf einfache Art und Weise vom Gerät getrennt und damit das volle Durchflußprofil freigegeben werden kann, wodurch die Pumpe eine wesentlich bessere Ansaugleistung entwickeln kann.This solution has the advantage that by means of the quick screw connection the high-pressure hose including the throttling section attached to the outlet of the device can be separated from the device in a simple manner and the full flow profile can thus be released, whereby the pump can develop a significantly better suction performance.

In der besonderen Ausbildung der Einpreßarmatur ist hierzu vorgesehen, daß der Einlaufkonus des Venturieinsatzes stirnseitig der Einpreßarmatur ansetzt und die Ringnut oberstromig einer den kupplungsdichtenden O-Ring aufnehmenden Ringnut als auch derart abständlich von der Stirnseite der Einpreßarmatur angeordnet ist, daß die Querbohrung in den Auslaufkonus des Venturi-Einsatzes mündet.In the special design of the press fitting, it is provided that the inlet cone of the venturi insert attaches to the face of the press fitting and the annular groove upstream of an annular groove receiving the clutch-sealing O-ring and also so far from the end face of the press fitting that the transverse bore is arranged in the outlet cone Venturi insert flows.

Um nun die Handhabung der Quickverschraubung ungehindert ausführen zu können, wenn die Zuführungsleitung für die beizugebenden Zusätze unmittelbar nächst der Schlauchkupplung einmündet, ist weiter vorgesehen, daß der Einpreßarmatur eine die Quickverschraubung bewirkende, die Preßhülse des Schlauchnippels übergreifende und darauf drehbar lagernde Anschlußmutter zugeordnet ist, die für den Eingriff mit einem Innengewinde des geräteseitigen Anschlußstutzens aus einem ein Außengewinde aufweisenden Gewindeteil sowie einem daran angeformten dieses umgreifenden und im angeschlossenen Zustand den geräteseitigen Anschlußstutzen übergreifenden Griffteil besteht, wobei die zentrische Bohrung der Anschlußmutter in ihrer Dimensionierung für den arretierenden Eingriff des einwärts abgewinkelt ausgeführten stirnseitigen Endes der Preßhülse in eine der Einpreßarmatur angeformte Ringnut ausgelegt ist, und das Gewindeteil eine stirnseitige Anschlagfläche zur Anlage gegen einen ebenfalls der Einpreßarmatur angeformten ringförmigen Bund aufweist.In order to be able to carry out the handling of the quick screw connection unhindered when the supply line for the additives to be added opens directly next to the hose coupling, it is further provided that the press fitting is assigned a connecting nut which effects the quick screw connection and overlaps the press sleeve of the hose nipple and rotates thereon for engagement with an internal thread of the device-side connector from an external thread threaded part and a molded on this and encompassing this and in the connected state overlapping the device-side connector consists of the central bore of the connecting nut in its dimensions for the locking engagement of the inwardly angled end The end of the press sleeve is designed in an annular groove formed on the press-fit fitting, and the threaded part has an end-face stop surface for bearing against one n also has an integrally formed annular collar.

Das Gewindeteil der Anschlußmutter kann dabei aus einem geeigneten Metall und das als Schutzring ausgebildete Griffteil aus einem geeigneten Kunststoff bestehen.The threaded part of the connecting nut can consist of a suitable metal and the grip part, which is designed as a protective ring, can consist of a suitable plastic.

Die besondere Ausführungsform der Anschlußmutter mit einem in den geräteseitigen Anschlußstutzen eingreifenden Innengewinde bietet zudem noch den Vorteil, daß erfindungsgemäß die Querbohrung in dem für die Zuführung chemischer Zusätze in den für die Aufnahme der Einpreßarmatur ausgebildeten geräteseitigen Schlauchanschlußstutzen außerhalb des Bereichs des im angeschlossenen Zustand übergreifenden Griffteils der Anschlußmutter angeordnet werden kann, und außenseitig der Wandung des Anschlußstutzens einen den übergreifenden Zuführschlauch aufnehmenden Schlauchnippel fest zugeordnet erhalten kann.The special embodiment of the connecting nut with an internal thread engaging in the device-side connecting piece also offers the advantage that, according to the invention, the transverse bore is designed for the supply of chemical additives in the one for receiving the press-fit fitting Device-side hose connection piece can be arranged outside the area of the grip part of the connection nut which overlaps in the connected state, and a hose nipple receiving the overlapping supply hose can be permanently assigned to the outside of the wall of the connection piece.

Wesentlich ist mit dieser erfindungsgemäßen Einpreßarmatur auch, daß die als Steckerteil ausgebildete und integriert den Venturieinsatz aufweisende Einpreßarmatur mit dem daran ansetzenden Schlauchnippel für den zur Spritzpistole führenden HD-Schlauch einstückig ausgeführt werden kann.It is also important with this press-in fitting according to the invention that the press-in fitting designed as a plug part and integrated with the venturi insert can be made in one piece with the hose nipple attached to it for the HP hose leading to the spray gun.

Mit dieser besonders einfachen Quickverschraubung und der dafür ausgebildeten Einpreßmatur wird also erreicht, daß man ohne einen bisher ausgangsseitig des Reinigungsgerätes angebauten separaten oder im Gerät eingebauten Injektor sofort beliebige Kombinationen außen am Gerät anschliessen kann, dies kann eine Chemie-Injektor-Zuführung oder dergleichen sein, wie sie mit der erfindungsgemäßen Einpreßmatur für eine Quickverschraubung geboten wird. Auch ist es möglich, einen HD-Schlauch auf einfache Weise, d.h., ohne eine derartige Armaturkombination, direkt anzuschliessen, falls Zusätze nicht benötigt werden.With this particularly simple quick screw connection and the press fitting designed for this purpose, it is achieved that any combination can be connected to the outside of the device immediately without a separate injector installed on the output side of the cleaning device or built into the device, this can be a chemical injector supply or the like, as it is offered with a press fitting for a quick screw connection. It is also possible to connect an HP hose in a simple manner, i.e. without such a combination of fittings, if additives are not required.

Weitere Merkmale werden aus der nachfolgenden Beschreibung ersichtlich, die eine bevorzugte Ausführungsform der Erfindung anhand der anliegenden Zeichnungen erläutert. In den Zeichnungen zeigt

  • Figur 1 in einer teils geschnittenen Darstellung eine solche Einpreßarmatur in Anordnung an dem geräteseitigen Anschluß;
  • Figur 2 den Venturieinsatz der Einpreßarmatur einzeln in einer Schnittdarstellung;
  • Figur 3 die Anschlußmutter im Schnitt und in einerstirnansicht.
Further features will become apparent from the following description which explains a preferred embodiment of the invention with reference to the accompanying drawings. In the drawings shows
  • Figure 1 in a partially sectioned view of such a press fitting arranged in the device-side connection;
  • Figure 2 shows the Venturi insert of the press fitting individually in a sectional view;
  • Figure 3 shows the connecting nut in section and in an end view.

Die Figur 1 zeigt in einer Zusammenstellung eine bevorzugte Ausführungform der Einpreßarmatur 1 mit Quickverschraubung, eingeführt in den geräteseitigen Anschlußstutzen 22 im Anschlag gegen diesen. Die Figuren 1 und 3 zeigen in einer vergrößerten Darstellung nochmals die Einpreßarmatur 1 bzw. die Anschluß- oder Überwurfmutter 9 einzeln.FIG. 1 shows, in a compilation, a preferred embodiment of the press-in fitting 1 with quick screw connection, inserted into the connection piece 22 on the device against the stop. Figures 1 and 3 show in an enlarged view again the press fitting 1 and the connecting or union nut 9 individually.

Wie aus der Figur 1 ersichtlich, nimmt der nur beispielhaft dargestellte Anschlußstutzen 22 in seiner Bohrung 15 die Armatur 1 auf. In dieser bevorzugten Ausführungsform ist in dem geräteseitigen Anschlußstutzen 22 ein an der Stirnseite desselben ansetzendes Innengewinde 31 vorgesehen, das mit einem Außengewinde 12 der Ansclußmutter 9 in Eingriff kommt.As can be seen from FIG. 1, the connecting piece 22, which is only shown as an example, receives the fitting 1 in its bore 15. In this preferred embodiment, an internal thread 31 is provided in the device-side connecting piece 22 and engages with an external thread 12 of the connecting nut 9.

In der Zeichnungsfigur 1 ist die Zuführung für die beizugebenden Zusätze in Pfeilrichtung 20 oberhalb des Anschlußstutzens 22 ansetzend dargestellt. Die Wandung des Anschlußstutzens 22 weist hier eine Querbohrung 17 mit einem Außenseitigen Nippel 18 auf, über den der entsprechende Anschlußschlauch 19 aufgebracht ist.In the drawing figure 1, the feed for the additives to be added is shown starting in the arrow direction 20 above the connecting piece 22. The wall of the connecting piece 22 here has a transverse bore 17 with an outside nipple 18, via which the corresponding connecting hose 19 is applied.

Wie aus der vergrößerten Darstellung der Einpreßarmatur 1 in der Figur 2 klar ersichtlich, ist der Venturi-Einsatz 2 in der Armatur 1 vollständig aufgenommen. Der Einlaufkonus 23 setzt direkt an der Stirnseite 25 der Armatur 1 an, stromabwärts gefolgt von dem eigentlichen Einsatz 32 und einem Auslaufkonus 24. Wie ferner aus der Figur 2 ersichtlich, weist die Stirnfläche 25 eine eingeformte ringförmige Nut 36 für einen O-Ring auf, der im angeschlossenen Zustand abdichtend an einer ringförmigen Anschlagfläche 38 des geräteseitigen Anschlußstutzens 22 anliegt.As can clearly be seen from the enlarged illustration of the press-in fitting 1 in FIG. 2, the venturi insert 2 is completely accommodated in the fitting 1. The inlet cone 23 attaches directly to the end face 25 of the fitting 1, followed downstream by the actual insert 32 and an outlet cone 24. As can also be seen from FIG. 2, the end face 25 has an annular groove 36 formed in it for an O-ring, which, in the connected state, lies sealingly against an annular stop surface 38 of the connecting piece 22 on the device side.

Nächst der die Anschlagfläche der Armatur 1 bildenden Stirnseite 25 ist um den Umfang eine erste Eindrehung oder Ringnut 14 vorgesehen, die einerseits über eine Querbohrung 16 mit dem Auslaufkonus 24 des Venturieinsatzes 2 in kommunizierender Verbindung steht, und andererseits über eine Querbohrung 17 in der Wandung des geräteseitigen Anschlußstutzens 22 mit der Zufuhrleitung 19 für die beizugebenden Zusätze, wenn die Armatur 1 in den Anschlußstutzen 22 eingeführt ist (Figur 1). Nächst der Ringnut 14, zum Schlauchnippel 3 hin, ist dann eine zweite Eindrehung oder Ringnut 26 für einen die Ringnut 14 abdichtenden O-Ring 27 eingebracht, dem sich eine zylindrische Führungsfläche 35 mit einer ringförmigen Schulter 11 anschließt, gegen die rückseitig die die Anschlußmutter 9 mit ihrer Stirnseite oder ringförmigen Stirnfläche 30 (Figur 3) anliegt.Next to the stop surface of the fitting 1 Front 25 is provided around the circumference of a first indentation or annular groove 14, which communicates via a transverse bore 16 with the outlet cone 24 of the venturi insert 2, on the one hand, and on the other hand via a transverse bore 17 in the wall of the device-side connector 22 with the supply line 19 for the additives to be added when the fitting 1 is inserted into the connecting piece 22 (Figure 1). Next to the annular groove 14, towards the hose nipple 3, a second recess or annular groove 26 is then introduced for an O-ring 27 which seals the annular groove 14 and which is followed by a cylindrical guide surface 35 with an annular shoulder 11, against which the connecting nut 9 is connected on the rear rests with its end face or annular end face 30 (FIG. 3).

Der einstückig angeformte Schlauchnippel 3 besitzt für die Aufnahme des HD-Schlauches 5 außenseitig um den Umfang ein an sich bekanntes Profil. Wie aus der Figur 1 ersichtlich, wird der HD-Schlauch 5 bis zu einer der Armatur 1 angeformten Ringschulter 7 aufgesteckt und mittels einer Preßhülse 4 auf dem Schlauchnippel 3 festgelegt, wobei die Preßhülse 4 mit ihrem einwärts abgewinkelten stirnseitigen Ende 29 über die der Armatur 1 angeformte Ringschulter 7 in eine weitere Eindrehung oder Ringnut 6 greift, und in dieser Position von der die Preßhülse 4 umgreifenden Anschluß- oder Überwurfmutter 9 zusätzlich gehalten wird. Über dem HD-Schlauch 5 ist ferner ein an sich bekannter Knickschutz 21 aufgebracht, der zur Armatur 1 hin eine radiale Erweiterung zum Aufstecken auf die Preßhülse 4 aufweist.The one-piece molded hose nipple 3 has a profile known per se around the circumference for receiving the high-pressure hose 5. As can be seen from FIG. 1, the high-pressure hose 5 is attached to an annular shoulder 7 molded onto the fitting 1 and fixed on the hose nipple 3 by means of a pressing sleeve 4, the pressing sleeve 4 with its inwardly angled front end 29 over that of the fitting 1 molded ring shoulder 7 engages in a further recess or ring groove 6, and is additionally held in this position by the connecting sleeve or union nut 9 encompassing the compression sleeve 4. Furthermore, a known anti-kink protection 21 is applied over the high-pressure hose 5, which has a radial extension towards the fitting 1 for plugging onto the compression sleeve 4.

Zur Verschraubung der Armatur 1 mit dem geräteseitigen Anschlußstutzen 22 ist die bereits erwähnte Anschlußmutter 9 vorgesehen, die, wie aus den Figuren 1 und 3 ersichtlich, aus einem Gewindeteil 10 und einem dieses Teil umschließenden Griffteil 13 besteht. Gewindeteil 10 und Griffteil 13 können einstückig ausgeführt sein, jedoch auch, wie in der dargestellten Ausführungsform, kombiniert aus unterschiedlichem Material bestehen. Das Gewindeteil 10 weist eine zentrische Bohrung 28 auf, die in ihrer Dimensionierung der Preßhülse 4 angepaßt ist, auf der die Anschlußhülse 9 frei drehbar lagert. Über einen Längenbereich des Gewindeteils 10 ist vorzugsweise ein Außengewinde 12 für den Eingriff mit dem Innengewinde 31 des geräteseitigen Anschlußstutzens 22 vorgesehen. Das Griffteil 13 ist mit dem Gewindteil 10 einstückig ausgeführt oder mit diesem starr verbunden. Über einen Teil der Umfangsfläche des Griffteils 12 sind im hinteren Bereich der Griffigkeit dienende Rillen 37 eingeformt. Der vordere Bereich des Griffteils 13 ist verlängert ausgeführt und umschließt abständlich den Gewindebereich 12 des Teils 10. Der Abstand zwischen Außendurchmesser des Gewindebereichs 12 des Gewindeteils 10 und dem Innendurchmesser der abständlich den Gewindebereich umschließenden Verlängerung des Griffstücks 13 ist so gewählt, daß die Verlängerung im angeschlossenen Zustand der Einpreßarmatur 1 den stirnseitigen Bereich des geräteseitigen Anschlußstutzens 22 übergreift. Die zentrische Ausnehmung im hinteren Bereich des Griffstücks 13 ist in ihrem Innendurchmesser mit ausreichendem Spiel oder Abstand dem Außendurchmesser des die Preßhülse 4 übergreifenden Knickschutzes 21 angepaßt.For screwing the fitting 1 to the device-side connection piece 22, the connection nut 9 already mentioned is provided, which, as can be seen from FIGS. 1 and 3, consists of a threaded part 10 and one of these parts enclosing handle part 13. Threaded part 10 and grip part 13 can be made in one piece, but, as in the embodiment shown, can also be combined from different materials. The threaded part 10 has a central bore 28 which is adapted in its dimensions to the press sleeve 4 on which the connecting sleeve 9 is freely rotatable. Over a length range of the threaded part 10, an external thread 12 is preferably provided for engagement with the internal thread 31 of the device-side connection piece 22. The handle part 13 is made in one piece with the threaded part 10 or rigidly connected to it. Grooves 37 are formed in the rear area of the grip, over part of the circumferential surface of the grip part 12. The front area of the grip part 13 is elongated and encloses the threaded area 12 of the part 10. The distance between the outer diameter of the threaded area 12 of the threaded part 10 and the inner diameter of the extension of the grip piece 13 which surrounds the threaded area is selected so that the extension in the connected State of the press fitting 1 engages over the end area of the device-side connection piece 22. The inner diameter of the central recess in the rear region of the grip piece 13 is matched to the outer diameter of the kink protection 21 which overlaps the compression sleeve 4 with sufficient clearance or clearance.

Wie vorhergehend im Einzelnen zu der bevorzugten Ausführungsform der Einpreß-Armatur erläutert und in den Zeichnungsfiguren dargestellt, wird die als Steckerteil mit integriertem Venturieinsatz ausgebildete Armatur 1 in den geräteseitigen Anschlußstutzen 22 eingesteckt und mittels der Anschlußmutter 9 daran festgelegt, wobei die Stirnseite 30 des Gewindeteils 10, an der der Armatur 1 über den Umfang angeformten ringförmigen Schulter 11 anliegend, die Armatur 1 bis zum Anschlag ihrer Stirnseite 25 gegen die ringförmige Anschlagfläche 38 des geräteseitigen Anschlußstutzens 22 eindrückt.In dieser Position liegt die die Armatur 1 mit ihrer eingeformten Ringnut 14 und der zum Auslaufkonus 24 des Venturieinsatzes 2 führenden Querbohrung 16 exakt fluchtend mit der die Wandung des geräteseitigen Anschlußstutzens 22 durchgreifenden Querbohrung 17, wobei die Armatur 1 in der Bohrung 15 des Anschlußstutzens 22 durch die der Armatur 1 angeformten ringförmigen Schultern 33,34,35 geführt und gestützt wird, und der in der Ringnut 26 geführte O-Ring 27 zusammen mit dem vorzugsweise in der Stirnflächennut 36 angeordneten und gegen die Anschlagfläche 38 des Anschlußstutzens 22 gepreßten O-Ring die gesamte Anordnung abdichtet.As previously explained in detail for the preferred embodiment of the press-fit fitting and shown in the drawing figures, the fitting 1, which is designed as a plug part with an integrated venturi insert, is inserted into the connecting piece 22 on the device side and fixed thereto by means of the connecting nut 9, the end face 30 of the threaded part 10 , adjacent to the armature 1 formed over the circumference of the annular shoulder 11, press the valve 1 up to the stop of its end face 25 against the annular stop surface 38 of the device-side connecting piece 22. In this position, the valve 1 with its molded-in annular groove 14 and the transverse bore 16 leading to the outlet cone 24 of the venturi insert 2 is flush with the wall of the device-side connecting piece 22 penetrating transverse bore 17, the fitting 1 being guided and supported in the bore 15 of the connecting piece 22 by the annular shoulders 33, 34, 35 formed on the fitting 1, and the O-ring 27 guided in the annular groove 26 together with the O-ring, which is preferably arranged in the end face groove 36 and pressed against the stop face 38 of the connecting piece 22, seals the entire arrangement.

Selbstverständlich ist es auch möglich, eine Überwurfmutter mit Innengewinde und auf dem Anschlußstutzen aufgebrachten Außengewinde für die Quickverschraubung vorzusehen. Andere Ausführungsformen der abdichtenden Elemente und deren Anordnung sind möglich. Wesentlich ist jedoch gemäß dieser Erfindung, daß die Schlauchanschluß-Armatur den Venturieinsatz 2 integriert aufweist, wodurch eine sehr einfach herzustellende kommunizierende Verbindung zwischen einer zum Beispiel chemische Zusätze zuführenden Leitung und dem in der steckerförmigen Armatur integriert angeordneten, auch als Injektor bezeichneten Venturieinsatz hergestellt werden kann. Die Armatur kann freizügig samt Venturieinsatz vom Gerät getrennt werden, um das Aggregat zu entlüften, oder, um die Ansaugwirkung der Pumpe zu stützen, wenn zum Beispiel die Pumpe im Saugbetrieb eingesetzt wird, d.h., von einem Behältnis ansaugt, dessen Wasserspiegel wesentlich tiefer liegt. In allen diesen Fällen kann die Quickverschraubung gelöst und der HD-Schlauch mit dem im Anschlußstück (Armatur) integrierten Venturieinsatz vom Geräteausgang entfernt werden.Of course, it is also possible to provide a union nut with an internal thread and an external thread on the connecting piece for the quick screw connection. Other embodiments of the sealing elements and their arrangement are possible. It is essential, however, according to this invention that the hose connection fitting has the venturi insert 2 integrated, as a result of which a communicating connection which is very easy to produce can be established between a line which, for example, supplies chemical additives and the venturi insert which is integrated in the plug-shaped fitting and is also referred to as an injector . The valve can be freely separated from the device, including the Venturi insert, in order to vent the unit or to support the suction effect of the pump, for example if the pump is used in suction mode, ie, is sucked in from a container whose water level is significantly lower. In all these cases, the quick screw connection can be loosened and the HP hose can be removed from the device outlet using the venturi insert integrated in the fitting (fitting).

Die erfindungsgemäß in der Schlauchanschluß-Armatur 1 integriert angeordnete Drossel 32 in der Venturistrecke kann zudem sehr einfach ausgetauscht werden; der Innendurchmesser der Drossel 32 ist somit an den vorgesehenen Einsatz und das gewünschte Mischverhältnis anpaßbar.The throttle 32 in the venturi section, which is integrated in the hose connection fitting 1 according to the invention, can also be replaced very easily; the inner diameter of the throttle 32 can thus be adapted to the intended use and the desired mixing ratio.

Auch der stirnseitige Teil der Einpreßarmatur 1 kann im Bereich der Durchflußbohrung 8, in der der Einlaufkonus 23 eingeformt ist, vorgezogen ausgeführt sein, um so den Einlaufdurchmesser gegebenenfalls zu vergrößern. Ein weiterer, die Einpreßarmatur 1 gegen die Durchflußbohrung 8 abdichtender O-Ring kann dadurch auf der entsprechend breiteren ringförmigen Schulter 33 in einer Nut angeordnet sein. Weitere Ausbildungsformen sind im Rahmen der Ansprüche möglich.The end part of the press fitting 1 can also be designed to be advanced in the area of the flow bore 8, in which the inlet cone 23 is formed, in order to increase the inlet diameter if necessary. Another O-ring sealing the press-in fitting 1 against the flow-through bore 8 can thereby be arranged in a groove on the correspondingly wider annular shoulder 33. Other forms of training are possible within the scope of the claims.

Zeichnungs-LegendeDrawing legend

  •  1 Einpreßarmatur1 press fitting
  •  2 Venturieinsatz2 venturi insert
  •  3 Schlauchnippel3 hose nipples
  •  4 Preßhülse4 press sleeve
  •  5 HD-Schlauch5 HP hose
  •  6 Ringnut6 ring groove
  •  7 Ringschulter (ringförmige Sch)7 ring shoulder (ring-shaped sh)
  •  8 Durchflußbohrung8 flow hole
  •  9 Anschlußmutter9 connecting nut
  • 10 Gewindeteil (9)10 threaded part (9)
  • 11 Ringschulter (ringförmige Sch)11 ring shoulder (ring-shaped sh)
  • 12 Außengewinde (10)12 external thread (10)
  • 13 Griffteil (9)13 grip part (9)
  • 14 Ringnut14 ring groove
  • 15 Bohrung (22)15 hole (22)
  • 16 Querbohrung (1)16 cross bore (1)
  • 17 Querbohrung (22)17 cross bore (22)
  • 18 Nippel18 nipples
  • 19 (Chemie) Schlauch19 (chemistry) hose
  • 20 Pfeil (Zuflußrichtung)20 arrow (inflow direction)
  • 21 Knickschutz21 kink protection
  • 22 Anschlußstutzen, Gerät22 connecting piece, device
  • 23 Einlaufkonus (2)23 inlet cone (2)
  • 24 Auslaufkonus (2)24 outlet cone (2)
  • 25 Stirnseite (1)25 end face (1)
  • 26 Ringnut (27)26 ring groove (27)
  • 27 O-Ring27 O-ring
  • 28 Bohrung (9)28 hole (9)
  • 29 Ende (4)29 end (4)
  • 30 Anschlagfläche (10)30 stop surface (10)
  • 31 Innengewinde (22)31 internal thread (22)
  • 32 Drossel (2)32 throttle (2)
  • 33 Ringschulter (ringförm Sch)33 ring shoulder (ring-shaped sh)
  • 34 Ringschulter (ringförm.Sch)34 ring shoulder (ring-shaped sch)
  • 35 ringförm.Sch. Führungsfläche35 ring-shaped Leadership area
  • 36 (O-Ring)36 (O-ring)
  • 37 Rillen (13)37 grooves (13)
  • 38 ringförm.Anschlagfläche (22)38 annular stop surface (22)

Claims (6)

1. A high pressure press-in fitting for a high pressure hose connection with quick screw coupling on the output side of a high pressure cleaning apparatus, wherein the press-in fitting (1) of the quick screw coupling, receiving the apparatus-directed end (5) of the hose and constructed as a plug piece, has a Venturi section (2) moulded in the through flow region, and on the end side an annular groove (14) is provided which is moulded around the outer circumference and in coupled state is in alignment with a transverse bore (17) _ delivering chemical additives _ of the hose connection piece (22) on the apparatus side, which annular groove is connected with the through flow bore (8) so as to communicate via a transverse bore (16) of the press-in fitting (1).
2. A high pressure press-in fitting according to Claim 1, characterized in that the run-in taper (23) of the Venturi section (2) is fixed on the end face of the press-in fitting (1) and the annular groove (14) is arranged on the upstream side of an annular groove (26) receiving the O-ring (27) which seals the coupling, and is also arranged at a distance from the end face (25) of the press-in fitting (1) such that the transverse bore (16) opens into the run-out taper (24) of the Venturi section (2).
3. A high pressure press-in fitting according to Claim 1 and 2, characterized in that there is associated with the press-in fitting (1) a connecting nut (9) which brings about the quick screw coupling, overlaps the pressure sleeve (4) of the hose nipple (3) and rests rotatably thereon, which nut, for engagement with an internal thread of the connection piece (22) on the apparatus side, consists of a threaded piece (10) having an external thread (12) and also of a grip piece (13) formed thereon and embracing the latter and in connected state overlapping the connection piece (22) on the apparatus side, wherein the central bore (28) of the connecting nut (9) is designed in its dimensioning for the arresting engagement of the end-side end (29) of the pressure sleeve (4), constructed so as to be inwardly angular, into an annular groove (6) formed on the press-in fitting (1), and the threaded piece (10) has a stop face (30) on the end side to rest against an annular collar (11) which is likewise formed on the press-in fitting (1).
4. A high pressure press-in fitting according to Claim 3, characterized in that the threaded piece (10) of the connecting nut (9) consists of a suitable metal and the grip piece (13), constructed as a protective ring, consists of a suitable plastics material.
5. A high pressure press-in fitting according to one of Claims 1 to 4, characterized in that the transverse bore (17) is arranged in the
hose connection piece (22) on the apparatus side and constructed to receive the press-in fitting (1), outside the region of the grip piece (13) of the connecting nut (9), overlapping in connected state, and on the outer side there is fixedly associated with the wall of the connection piece (22) a hose nipple (18) receiving the overlapping supply hose (19).
6. A high pressure press-in fitting according to one of Claims 1 to 4, characterized in that the press-in fitting (1), which is constructed as a plug piece and has the Venturi section (2) integrally, is constructed in one piece with the hose nipple (3), adjoining thereon, for the high pressure hose (5).
EP88111089A 1987-07-20 1988-07-12 High pressure press-in connection Expired - Lifetime EP0300327B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88111089T ATE63844T1 (en) 1987-07-20 1988-07-12 HIGH PRESSURE PRESS-IN FITTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8709953U DE8709953U1 (en) 1987-07-20 1987-07-20 High pressure press fitting
DE8709953U 1987-07-20

Publications (3)

Publication Number Publication Date
EP0300327A2 EP0300327A2 (en) 1989-01-25
EP0300327A3 EP0300327A3 (en) 1989-10-18
EP0300327B1 true EP0300327B1 (en) 1991-05-29

Family

ID=6810260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111089A Expired - Lifetime EP0300327B1 (en) 1987-07-20 1988-07-12 High pressure press-in connection

Country Status (5)

Country Link
US (1) US4911481A (en)
EP (1) EP0300327B1 (en)
JP (1) JPH0724801B2 (en)
AT (1) ATE63844T1 (en)
DE (2) DE8709953U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534042A1 (en) * 1991-09-23 1993-03-31 WEBER, Gisela Angle insert assembly for pressure fluid hoses

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE10328773B3 (en) * 2003-06-25 2005-02-17 Framatome Anp Gmbh Nuclear facility
US20090243281A1 (en) * 2008-03-28 2009-10-01 Icu Medical Inc. Connectors having features to facilitate or hamper tightening and/or loosening
CN105756833B (en) * 2016-03-24 2018-08-21 中国北方发动机研究所(天津) A kind of switching device between high-pressure oil pipe and fuel injector
KR20220041916A (en) * 2019-08-05 2022-04-01 아이커 시스템즈, 인크. Seal for flow limiter
US11841036B2 (en) 2019-08-05 2023-12-12 Ichor Systems, Inc. Laminar flow restrictor and seal for same

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Publication number Priority date Publication date Assignee Title
CA791011A (en) * 1968-07-30 A. Schmitt Harry Conduit fitting
DE7505856U (en) * 1975-06-26 Specht H Device for spraying pesticides, liquid fertilizers or the like.
US1802766A (en) * 1927-12-08 1931-04-28 Babcock & Wilcox Co Pipe or tube joint
US3982965A (en) * 1975-03-10 1976-09-28 Spotz Donald R Water jet cleaning appliance
FR2419453A1 (en) * 1978-03-09 1979-10-05 Pellenc & Motte COUPLING DEVICE FOR COAXIAL SUPPLY AND RETURN HOSES TO MACHINES AND HYDRAULIC EQUIPMENT
US4662401A (en) * 1980-09-08 1987-05-05 Dowell Schlumberger Incorporated High pressure choke assembly
US4426213A (en) * 1980-11-17 1984-01-17 Engineering Resources, Inc. Condensate removal device for steam lines and the like
JPH038869Y2 (en) * 1985-01-28 1991-03-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534042A1 (en) * 1991-09-23 1993-03-31 WEBER, Gisela Angle insert assembly for pressure fluid hoses

Also Published As

Publication number Publication date
JPH01139163A (en) 1989-05-31
EP0300327A3 (en) 1989-10-18
ATE63844T1 (en) 1991-06-15
DE3863022D1 (en) 1991-07-04
EP0300327A2 (en) 1989-01-25
JPH0724801B2 (en) 1995-03-22
DE8709953U1 (en) 1987-09-10
US4911481A (en) 1990-03-27

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