WO2000047329A1 - Jet tube for high-pressure cleaning devices - Google Patents
Jet tube for high-pressure cleaning devices Download PDFInfo
- Publication number
- WO2000047329A1 WO2000047329A1 PCT/EP1999/008459 EP9908459W WO0047329A1 WO 2000047329 A1 WO2000047329 A1 WO 2000047329A1 EP 9908459 W EP9908459 W EP 9908459W WO 0047329 A1 WO0047329 A1 WO 0047329A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- jet pipe
- plastic
- spray nozzle
- pressure cleaning
- pipe according
- Prior art date
Links
Classifications
-
- 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
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- 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
Definitions
- the invention relates to a jet pipe for high-pressure cleaning devices made of a sprayable plastic, in which a spray nozzle is inserted as an insert at one end.
- the embedding is preferably carried out in a so-called two-component spraying process, and it is advantageous if the melting point of the plastic of the spray nozzle is at least as high as that of the plastic material of the steel tube.
- the melting point of the plastic of the spray nozzle is higher than that of the plastic material of the jet pipe.
- the melting point of the plastic of the spray nozzle is the same as the melting point of the plastic material of the spray lance.
- the plastic material of the jet pipe can be, for example, polyamide 66 or polypropylene or polybutylene terephthalate. It is advantageous if 10 to 50 percent by volume of glass fiber is added to the plastic of the jet pipe, in particular approximately 30 percent by volume.
- the plastic of the spray nozzle can be, for example, polyamide 66 or polyether ether ketone or polybutylene terephthalate.
- the drawing shows a partial longitudinal section through a jet pipe with an embedded plastic spray nozzle.
- the jet pipe 1 is an elongated component of conventional type, as is known for example from EP 0 456 010 B1. It consists of a sprayable plastic material and in one end region this plastic material surrounds a spray nozzle 2, which in turn also consists of plastic.
- This spray nozzle 2 has a narrowing through bore 3, which is connected to a longitudinal bore 4 of the jet pipe 1, and an outlet opening 5, through which the liquid passing through the jet pipe emerges in the desired jet shape.
- the spray nozzle 2 is made, for example, of polyamide 66 and can contain a glass fiber content of the order of 30 percent by volume.
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a jet tube (1) for high-pressure cleaning devices which is made of an extrudable plastic material and into one end of which an injection nozzle (2) is introduced in the manner of an insert. To make such a jet tube less complex to produce the invention provides for the injection nozzle to be made of a plastic material.
Description
STRAHLROHR FÜR HOCHDRUCKREINIGUNGSGERÄTE JET PIPE FOR HIGH PRESSURE CLEANING DEVICES
Die Erfindung betrifft ein Strahlrohr für Hochdruckreinigungsgeräte aus einem spritzbaren Kunststoff, in das an seinem einen Ende eine Spritzdüse als Einlegeteil eingelegt ist.The invention relates to a jet pipe for high-pressure cleaning devices made of a sprayable plastic, in which a spray nozzle is inserted as an insert at one end.
Ein solches Strahlrohr ist aus der EP 0 456 010 Bl bekannt. Bisher ist man davon ausgegangen, daß die Spritzdüsen eines Hochdruckreinigungsgeräts einem aus- serordentlich hohen Verschleiß unterworfen sind, so daß die erforderlichen Materialeigenschaften nur durch Spritzdüsen aus Metall erfüllt werden können. Bei bekannten Strahlrohren dieser Art sind daher Spritzdüsen verwendet worden, die aus Messing oder Edelstahl bestehen mit der Folge, daß die Herstellung entsprechend aufwendig und teuer ist.Such a jet pipe is known from EP 0 456 010 B1. So far, it has been assumed that the spray nozzles of a high-pressure cleaning device are subject to extremely high wear, so that the required material properties can only be achieved by spray nozzles made of metal. In known jet pipes of this type, spray nozzles have therefore been used, which consist of brass or stainless steel, with the result that the production is correspondingly complex and expensive.
Es ist Aufgabe der Erfindung, ein gattungsgemäßes Strahlrohr so auszugestalten, daß der Herstellungsaufwand herabgesetzt werden kann.It is an object of the invention to design a generic jet pipe in such a way that the production outlay can be reduced.
Diese Aufgabe wird bei einem Strahlrohr der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Spritzdüse aus Kunststoff besteht.This object is achieved according to the invention in a jet pipe of the type described in the introduction in that the spray nozzle is made of plastic.
Es hat sich überraschend herausgestellt, daß es möglich ist, Spritzdüsen aus Kunststoff auch bei Hochdruckreinigungsgeräten und der bei diesen auftretenden hohen Belastung einzusetzen, also bei Drücken von mindestens
20 bar, wenn diese Spritzdüsen als Einlegeteil in ein Strahlrohr aus Kunststoff eingelegt und von dem Kunststoffmaterial des Strahlrohrs zumindest teilweise umgeben werden.It has surprisingly turned out that it is possible to use spray nozzles made of plastic also in high-pressure cleaning devices and the high load occurring with them, that is to say at pressures of at least 20 bar if these spray nozzles are inserted as an insert into a plastic jet pipe and are at least partially surrounded by the plastic material of the jet pipe.
Vorzugsweise erfolgt die Einbettung in einem sogenannten Zweikomponenten-Spritzverfahren, und dabei ist es vorteilhaft, wenn der Schmelzpunkt des Kunststoffs der Spritzdüse mindestens so hoch liegt wie der des Kunststoffmaterials des Stahlrohrs.The embedding is preferably carried out in a so-called two-component spraying process, and it is advantageous if the melting point of the plastic of the spray nozzle is at least as high as that of the plastic material of the steel tube.
Insbesondere kann vorgesehen sein, daß der Schmelzpunkt des Kunststoffs der Spritzdüse höher liegt als der des Kunststoffmaterials des Strahlrohrs. In diesem Fall ist es möglich, die vorgefertigte Spritzdüse in eine Spritzform einzulegen und dann mit dem Kunststoffmaterial des Strahlrohrs zu umspritzen, ohne daß die Gefahr besteht, daß die Spritzdüse dabei in unerwünschter Weise verformt wird.In particular, it can be provided that the melting point of the plastic of the spray nozzle is higher than that of the plastic material of the jet pipe. In this case, it is possible to insert the prefabricated spray nozzle into an injection mold and then to encapsulate it with the plastic material of the jet pipe without the risk that the spray nozzle is deformed in an undesirable manner.
Bei einem anderen Ausführungsbeispiel kann jedoch auch vorgesehen sein, daß der Schmelzpunkt des Kunststoffs der Spritzdüse gleich ist wie der Schmelzpunkt des Kunststoffmaterials der Strahlrohrs. In einem solchen Verfahren ist es günstig, beim Spritzen des Strahlrohrs das Kunststoffmaterial auf der der Spritzdüse abgewandten Seite in die Spritzform einzufüllen, so daß das Kunststoffmaterial des Strahlrohrs beim Erreichen der eingelegten Spritzdüse gegenüber der Einführseite abgekühlt ist. Es hat sich überraschenderweise herausgestellt, daß bei einem solchen Verfahren eine Einbettung der Spritzdüse aus Kunststoff in das umgebende Kunststoffmaterial des Strahlrohrs möglich ist, ohne daß die
Spritzdüse in ihren wesentlichen inneren Bereichen Verformungen erfährt.In another embodiment, however, it can also be provided that the melting point of the plastic of the spray nozzle is the same as the melting point of the plastic material of the spray lance. In such a method, it is expedient to fill the plastic material on the side facing away from the spray nozzle into the injection mold when spraying the spray tube, so that the plastic material of the spray tube is cooled relative to the insertion side when it reaches the inserted spray nozzle. It has surprisingly been found that in such a method it is possible to embed the plastic spray nozzle in the surrounding plastic material of the jet pipe without the Spray nozzle experiences deformation in its essential inner areas.
Das Kunststoffmaterial des Strahlrohrs kann beispielsweise Polyamid 66 sein oder Polypropylen oder Polybuty- lenterephtalat. Günstig ist es, wenn dem Kunststoff des Strahlrohrs 10 bis 50 Volumenprozent Glasfaseranteil beigemischt ist, insbesondere etwa 30 Volumenprozent.The plastic material of the jet pipe can be, for example, polyamide 66 or polypropylene or polybutylene terephthalate. It is advantageous if 10 to 50 percent by volume of glass fiber is added to the plastic of the jet pipe, in particular approximately 30 percent by volume.
Der Kunststoff der Spritzdüse kann beispielsweise Polyamid 66 oder Polyetheretherketon oder Polybutylen- terephtalat sein.The plastic of the spray nozzle can be, for example, polyamide 66 or polyether ether ketone or polybutylene terephthalate.
Auch hier ist es vorteilhaft, wenn dem Kunststoff der Spritzdüse 10 bis 50 Volumenprozent Glasfaseranteil beigemischt ist, insbesondere 30 Volumenprozent.Here, too, it is advantageous if 10 to 50 percent by volume of glass fiber, particularly 30 percent by volume, is added to the plastic of the spray nozzle.
Die nachfolgende Beschreibung einer bevorzugten Ausfüh- rungsform der Erfindung dient der näheren Erläuterung. Die Zeichnung zeigt einen Teillängsschnitt durch ein Strahlrohr mit einer eingebetteten Kunststoffspritzdüse.The following description of a preferred embodiment of the invention serves for a more detailed explanation. The drawing shows a partial longitudinal section through a jet pipe with an embedded plastic spray nozzle.
Das Strahlrohr 1 ist ein längliches Bauteil herkömmlicher Art, wie es beispielsweise aus der EP 0 456 010 Bl bekannt ist. Es besteht aus einem spritzbaren Kunststoffmaterial und in seinem einen Endbereich umgibt dieses Kunststoffmaterial eine Spritzdüse 2, die ihrerseits ebenfalls aus Kunststoff besteht. Diese Spritzdüse 2 weist eine sich verengende Durchgangsbohrung 3 auf, die mit einer Längsbohrung 4 des Strahlrohrs 1 in Verbindung steht, sowie eine Auslaßöffnung 5, durch die
die das Strahlrohr durchsetzende Flüssigkeit in der gewünschten Strahlform austritt.The jet pipe 1 is an elongated component of conventional type, as is known for example from EP 0 456 010 B1. It consists of a sprayable plastic material and in one end region this plastic material surrounds a spray nozzle 2, which in turn also consists of plastic. This spray nozzle 2 has a narrowing through bore 3, which is connected to a longitudinal bore 4 of the jet pipe 1, and an outlet opening 5, through which the liquid passing through the jet pipe emerges in the desired jet shape.
Die Spritzdüse 2 besteht beispielsweise aus Polyamid 66 und kann einen Glasfaseranteil in der Größenordnung von 30 Volumenprozent enthalten.
The spray nozzle 2 is made, for example, of polyamide 66 and can contain a glass fiber content of the order of 30 percent by volume.
Claims
PA T E N T AN S P RÜ C H EPA T E N T AN S P RÜ C H E
Strahlrohr ( 1 ) für Hochdruckreinigungsgeräte aus einem spritzbaren Kunststoff, in das an seinem einen Ende eine Spritzdüse ( 2 ) als Einlegeteil eingelegt ist, dadurch gekennzeichnet, daß die Spritzdüse ( 2 ) aus Kunststoff besteht.Jet pipe (1) for high-pressure cleaning devices made of a sprayable plastic, into which a spray nozzle (2) is inserted as an insert at one end, characterized in that the spray nozzle (2) consists of plastic.
2. Strahlrohr nach Anspruch 1, dadurch gekennzeichnet, daß der Schmelzpunkt des Kunststoffs der Spritzdüse ( 2 ) mindestens so hoch liegt wie der des Kunststoffmaterials des Strahlrohrs ( 1 ) .2. jet pipe according to claim 1, characterized in that the melting point of the plastic of the spray nozzle (2) is at least as high as that of the plastic material of the jet pipe (1).
3. Strahlrohr nach Anspruch 2, dadurch gekennzeichnet, daß der Schmelzpunkt des Kunststoffs der Spritzdüse (2) höher liegt als der des Kunst- stoffmaterials des Strahlrohrs ( 1 ) .3. jet pipe according to claim 2, characterized in that the melting point of the plastic of the spray nozzle (2) is higher than that of the plastic material of the jet pipe (1).
4. Strahlrohr nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kunststoff des Strahlrohrs (1) Polyamid 66 ist.4. jet pipe according to one of the preceding claims, characterized in that the plastic of the jet pipe (1) is polyamide 66.
5. Strahlrohr nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kunststoff des Strahlrohrs (1) Polyetheretherketon ist. 5. jet pipe according to one of claims 1 to 3, characterized in that the plastic of the jet pipe (1) is polyether ether ketone.
6. Strahlrohr nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kunststoff des Strahlrohrs (1) Polybutylenterephtalat ist.6. jet pipe according to one of claims 1 to 3, characterized in that the plastic of the jet pipe (1) is polybutylene terephthalate.
7. Strahlrohr nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß dem Kunststoff des Strahlrohrs ( 1 ) 10 bis 50 Volumenprozent Glasfaseranteil beigemischt sind.7. jet pipe according to one of the preceding claims, characterized in that the plastic of the jet pipe (1) 10 to 50 volume percent glass fiber content are added.
8. Strahlrohr nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kunststoff der Spritzdüse (2) Polyamid 66 ist.8. jet pipe according to one of the preceding claims, characterized in that the plastic of the spray nozzle (2) is polyamide 66.
9. Strahlrohr nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß dem Kunststoff der Spritzdüse (2) 10 bis zu 50 Volumenprozent Glasfaseranteil beigemischt ist. 9. jet pipe according to one of the preceding claims, characterized in that the plastic of the spray nozzle (2) 10 to 50 volume percent glass fiber content is added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU13795/00A AU1379500A (en) | 1999-02-12 | 1999-11-04 | Jet tube for high-pressure cleaning devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19905803 | 1999-02-12 | ||
DE19905803.2 | 1999-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000047329A1 true WO2000047329A1 (en) | 2000-08-17 |
Family
ID=7897246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/008459 WO2000047329A1 (en) | 1999-02-12 | 1999-11-04 | Jet tube for high-pressure cleaning devices |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU1379500A (en) |
WO (1) | WO2000047329A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20020523U1 (en) | 2000-12-01 | 2001-03-08 | Alfred Kärcher GmbH & Co., 71364 Winnenden | Jet pipe for a high pressure cleaning device |
DE10163102A1 (en) * | 2001-12-20 | 2003-07-10 | Alto Deutschland Gmbh | High pressure nozzle, in particular for a high pressure cleaning device |
DE10248357A1 (en) * | 2002-10-17 | 2004-05-06 | Hammelmann Maschinenfabrik Gmbh | Nozzle for generating a high pressure jet |
WO2004110646A3 (en) * | 2003-06-09 | 2005-06-23 | Robert Allsop | Improvements to wear components in powder coating system |
WO2011039434A1 (en) * | 2009-10-02 | 2011-04-07 | Deltalyo & Valmy | Cannula for a laryngotracheal anesthesia device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3945708A (en) * | 1975-03-28 | 1976-03-23 | International Telephone And Telegraph Corporation | Electrical connector with premold |
DE2734950A1 (en) * | 1977-08-03 | 1979-02-15 | Agrotop Graef & Habich Gmbh | Dimensionally stable and wear-resistant nozzle - for spraying liq. agricultural soil additives, is made of glass-fibre- or glass-bead-reinforced polybutylene terephthalate! |
US4834293A (en) * | 1988-03-23 | 1989-05-30 | Lichfield William H | Spray wand |
EP0456010A2 (en) * | 1990-05-09 | 1991-11-13 | Alfred Kärcher GmbH & Co. | Jet pipe for high pressure cleaning apparatuses |
FR2681551A1 (en) * | 1991-09-19 | 1993-03-26 | Patrick International | Method for bonding together two parts of a product made of different plastics, especially differing in terms of their melting points |
US5326036A (en) * | 1992-01-30 | 1994-07-05 | Wilger Wilfred H | Radially locking spray nozzle cap |
US5606789A (en) * | 1994-07-13 | 1997-03-04 | Century; Theodore J. | Fixture for sub-miniature aerosolizer |
JPH09248491A (en) * | 1996-03-12 | 1997-09-22 | Aoyama Seisakusho:Kk | Lubricating nozzle |
-
1999
- 1999-11-04 AU AU13795/00A patent/AU1379500A/en not_active Withdrawn
- 1999-11-04 WO PCT/EP1999/008459 patent/WO2000047329A1/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3945708A (en) * | 1975-03-28 | 1976-03-23 | International Telephone And Telegraph Corporation | Electrical connector with premold |
DE2734950A1 (en) * | 1977-08-03 | 1979-02-15 | Agrotop Graef & Habich Gmbh | Dimensionally stable and wear-resistant nozzle - for spraying liq. agricultural soil additives, is made of glass-fibre- or glass-bead-reinforced polybutylene terephthalate! |
US4834293A (en) * | 1988-03-23 | 1989-05-30 | Lichfield William H | Spray wand |
EP0456010A2 (en) * | 1990-05-09 | 1991-11-13 | Alfred Kärcher GmbH & Co. | Jet pipe for high pressure cleaning apparatuses |
EP0456010B1 (en) | 1990-05-09 | 1995-07-05 | Alfred Kärcher GmbH & Co. | Jet pipe for high pressure cleaning apparatuses |
FR2681551A1 (en) * | 1991-09-19 | 1993-03-26 | Patrick International | Method for bonding together two parts of a product made of different plastics, especially differing in terms of their melting points |
US5326036A (en) * | 1992-01-30 | 1994-07-05 | Wilger Wilfred H | Radially locking spray nozzle cap |
US5606789A (en) * | 1994-07-13 | 1997-03-04 | Century; Theodore J. | Fixture for sub-miniature aerosolizer |
JPH09248491A (en) * | 1996-03-12 | 1997-09-22 | Aoyama Seisakusho:Kk | Lubricating nozzle |
US5884849A (en) * | 1996-03-12 | 1999-03-23 | Aoyama Seisakusho Co., Ltd. | Nozzle for lubrication |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20020523U1 (en) | 2000-12-01 | 2001-03-08 | Alfred Kärcher GmbH & Co., 71364 Winnenden | Jet pipe for a high pressure cleaning device |
DE10163102A1 (en) * | 2001-12-20 | 2003-07-10 | Alto Deutschland Gmbh | High pressure nozzle, in particular for a high pressure cleaning device |
DE10248357A1 (en) * | 2002-10-17 | 2004-05-06 | Hammelmann Maschinenfabrik Gmbh | Nozzle for generating a high pressure jet |
US7243865B2 (en) | 2002-10-17 | 2007-07-17 | Hammelmann Maschinenfabrik Gmbh | Nozzle for generating a high-pressure jet |
WO2004110646A3 (en) * | 2003-06-09 | 2005-06-23 | Robert Allsop | Improvements to wear components in powder coating system |
WO2011039434A1 (en) * | 2009-10-02 | 2011-04-07 | Deltalyo & Valmy | Cannula for a laryngotracheal anesthesia device |
Also Published As
Publication number | Publication date |
---|---|
AU1379500A (en) | 2000-08-29 |
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