WO2004052548A1 - Düsenanordnung für ein hochdruckreinigungsgerät - Google Patents
Düsenanordnung für ein hochdruckreinigungsgerät Download PDFInfo
- Publication number
- WO2004052548A1 WO2004052548A1 PCT/EP2003/012687 EP0312687W WO2004052548A1 WO 2004052548 A1 WO2004052548 A1 WO 2004052548A1 EP 0312687 W EP0312687 W EP 0312687W WO 2004052548 A1 WO2004052548 A1 WO 2004052548A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- pressure nozzle
- pressure
- sealing
- low
- Prior art date
Links
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
-
- 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
- B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
Definitions
- the invention relates to a nozzle arrangement for a high-pressure cleaning device or a similar device with a low-pressure nozzle, a high-pressure nozzle arranged therein, with a jet pipe which carries a sealing nozzle which can be inserted into the high-pressure nozzle, with a bypass path surrounding the high-pressure nozzle and leading to the low-pressure nozzle, and with displacement means which change the distance between the sealing nozzle and the high pressure nozzle in such a way that in a high pressure position the sealing nozzle lies sealingly on the high pressure nozzle and thereby interrupts the connection from the jet pipe to the bypass route, while in a low pressure position the sealing nozzle is removed from the high pressure nozzle and thereby the connection from the jet pipe to Bypass route released.
- high-pressure cleaners there are various known constructions for optionally delivering the liquid conveyed by the high-pressure cleaning device via a high-pressure nozzle, a low-pressure nozzle or a combination of both nozzles, so that the properties of the jet between the high-pressure jet and the low-pressure jet can be adjusted essentially continuously.
- a high-pressure nozzle a low-pressure nozzle or a combination of both nozzles
- EP 0 146 795 it is known from EP 0 146 795 to keep the nozzles in the respective switching position by the liquid pressure in a replaceable nozzle for high-pressure cleaning devices.
- the high-pressure nozzle insert is firmly connected to the jet pipe.
- EP 0 501 164 AI describes a one-piece nozzle body in which a central high-pressure nozzle opening and lower parts arranged parallel to it pressure nozzle openings are provided.
- the nozzle body can be moved in relation to the inflow pipe, which plunges into the high-pressure nozzle piece in the advanced position, the sealing takes place via O-ring seals on the immersing inflow nozzle.
- the object of the application is based on the design of a nozzle arrangement of the generic type in such a way that the structure is considerably simplified, in particular also the assembly.
- the jet pipe carries a cup-shaped housing which surrounds the sealing nozzle and in which the low-pressure nozzle and the high-pressure nozzle are sealed and freely displaceably mounted in relation to the inner wall of the housing, and in that the displacement means low-pressure Move the nozzle and the high pressure nozzle in the housing in its longitudinal direction against the sealing nozzle and away from it.
- the spray lance carries a pot-shaped housing, which serves as a bearing for the unit consisting of the low-pressure nozzle and the high-pressure nozzle, this unit is simply inserted into the housing from the front and is moved more or less against the sealing nozzle by the displacement movement.
- This is possible in a simple manner, and the assembly of such an arrangement is very simple, since only the assembly of high and low pressure nozzles has to be inserted into the pot-shaped housing, in addition only the displacement means on the jet pipe, which is the assembly of the low pressure nozzle, must be fixed and high pressure nozzle in the pot-shaped housing.
- the low-pressure nozzle is secured against rotation about the longitudinal axis of the housing by means of an anti-rotation device.
- the displacement means comprise a sleeve surrounding the pot-shaped housing, which can be displaced in the axial direction on the housing and thereby carries a stop surface which pushes the low-pressure nozzle more or less deeply into the housing.
- the sleeve can be rotatably mounted on the housing via a thread.
- the sleeve is composed of two half-shells that can be applied to the housing from both sides.
- a further advantageous embodiment is obtained if the high-pressure nozzle is pushed into the interior of the low-pressure nozzle from the rear and if stop means are provided which limit the depth of insertion of the high-pressure nozzle into the low-pressure nozzle.
- the assembly of the high-pressure nozzle and the low-pressure nozzle is thus obtained simply by pushing the high-pressure nozzle into the low-pressure nozzle from the rear; in the inserted position, it is held by the liquid pressure, and special fixing agents are not necessary.
- the bypass route can be formed by longitudinal channels in the inner wall of the interior of the low-pressure nozzle, which are open to the interior and are closed from the outer wall of the inserted high-pressure nozzle to the interior.
- This also leads to a structurally very simple solution, only the longitudinal channels, which can be formed by longitudinal ribs on the inside of the interior, are sufficient to form longitudinal flow channels for the bypass path together with the inserted high-pressure nozzle.
- the longitudinal channels can be connected to the interior of the pot-shaped housing via side openings in the wall of the low-pressure nozzle.
- the high-pressure nozzle is secured against rotation about the longitudinal axis of the housing by means of an anti-rotation device.
- the sealing nozzle in the high pressure position rests against a sealing surface of the high pressure nozzle surrounding the sealing nozzle with an annular sealing section which is elastically expanded and sealed against the surrounding sealing surface under the action of the pressure of the liquid conveyed.
- the inherent elasticity of the sealing section is used to achieve a sealing of the sealing nozzle against the interior of the high pressure nozzle when the high pressure nozzle is in the high pressure position. Additional sealants are not necessary, in particular O-ring seals can be omitted here. This also greatly simplifies the structure of the overall arrangement.
- the sealing section consists of an elastically deformable plastic material. It is possible that the entire jet pipe is made in this way from the same plastic material.
- the sealing section has a reduced wall thickness compared to the wall thickness of the jet pipe.
- the sealing section is circular cylindrical.
- the sealing surface of the high-pressure nozzle is also preferably of circular cylindrical design.
- a sealing area with a narrowing cross section to adjoin the sealing surface of the high-pressure nozzle in the direction of flow, and this can in particular be conical.
- This sealing area, which narrows in cross section, leads to a first seal between the sealing nozzle and the high pressure nozzle when these are brought closer to one another.
- This first seal increases the pressure of the liquid delivered in the interior of the high-pressure nozzle, since the bypass route is largely closed. This increase in pressure then leads to a complete sealing by elastic expansion of the sealing section.
- the high-pressure nozzle in the area of the sealing surface has a significantly lower elastic expandability than the sealing section of the jet pipe.
- the high-pressure nozzle in the area of the sealing surface can have an increased wall thickness in relation to the other wall areas.
- the high-pressure nozzle may consist, at least in the area of the sealing surface, of a metal or a plastic with low ductility, for example of brass or of particularly tough polyamide.
- FIG. 1 a side view of a jet pipe with the actuating sleeve removed;
- Figure 2 is a longitudinal sectional view through a nozzle arrangement in high pressure operation
- Figure 3 is a view similar to Figure 2 in low pressure operation
- Figure 4 is a perspective view of a partially cut assembly from low pressure nozzle and high pressure nozzle and
- Figure 5 is a sectional view taken along line 5-5 in Figure 4.
- the nozzle arrangement shown in the drawing comprises a jet pipe 1, which carries at one end a connection 2 in the form of a bayonet with which the jet pipe 1 can be connected to a supply line, not shown in the drawing, which in turn is fed by a high-pressure cleaning device, which is also not shown and is known per se.
- the jet pipe 1 is provided with a pot-shaped housing 3 which is arranged concentrically with the jet pipe and which has a closed bottom 4 towards the jet pipe and which is open on the opposite side.
- the interior of the housing 3 has an essentially circular cylindrical cross section, the diameter of which is larger than the diameter of the jet pipe 1.
- the interior 5 of the jet pipe 1 is connected to a sealing stub 6, which protrudes from the center of the base 4 and carries a thin-walled, circular-cylindrical sealing section 7 at its free end.
- the wall section 8 adjoining the sealing section 7 in the direction of the jet pipe 1 has a substantially greater wall thickness than the sealing section 7, this also applies to the jet pipe 1 as a whole.
- This is also made of a small amount of elastically deformable plastic material, for example polyphtalamide (PPA), polyphenylene sulfide (PPS), polyacrylether ketones (PEEK), polyamide (PA) or polyethylene terephthalate (PET).
- PPA polyphtalamide
- PES polyphenylene sulfide
- PEEK polyacrylether ketones
- PA polyamide
- PET polyethylene terephthalate
- the pot-shaped housing 3 On the outside, the pot-shaped housing 3 has an external thread 9, which extends over the entire height of the housing 3, and at a short distance from the bottom 4, stop elements 10 projecting outwards are formed on the outside of the jet pipe 1.
- a low-pressure nozzle 12 is inserted into the circular-cylindrical interior 11 of the pot-shaped housing 3 from its open front, which essentially has a circular-cylindrical outer wall 13, the outer diameter of which corresponds essentially to the inner diameter of the cylindrical interior 11 of the housing 3.
- the outer wall 13 carries an annular seal 15 in a circumferential groove 14, so that the low-pressure nozzle 12 is sealed off from the inner wall of the housing 3.
- the interior 16 of the low-pressure nozzle 12 is also circular-cylindrical, at the front end of the low-pressure nozzle 12 facing away from the jet pipe 1, the interior 16 is closed in a hood-like manner and has a larger outlet opening 17 there, while the interior 16 is open on the opposite side.
- Channels 18 which run in the longitudinal direction and are open towards the interior 16 are worked into the inner wall and extend essentially over the entire length of the cylindrical interior as far as the hood-like closed end thereof.
- a radially projecting flange 21 is formed on the low-pressure nozzle 12, which is outside the cup-shaped , -. "_,” O 2004/052548
- Housing 3 is arranged and has a larger outer diameter than the interior 11 of this housing 3rd
- a high-pressure nozzle 22 is inserted into it, which has an essentially circular cylindrical outer wall 23, the outer diameter of which corresponds to the inner diameter of the interior 16 of the low-pressure nozzle 12, so that when the high-pressure nozzle 22 is inserted, the latter corresponds to the interior 16 of the low-pressure nozzle 12 open channels 18 closes (Figure 5).
- the high-pressure nozzle 22 is closed at one end in a hood-like manner and has at this end an outlet opening 24, the outlet cross-section of which is smaller than the outlet cross-section of the outlet opening 17 of the low-pressure nozzle 12, on the opposite side the high-pressure nozzle 22 is open and widens there via a conical sealing step 25 and goes upstream of this sealing stage 25 into a circular cylindrical sealing surface 26.
- the depth of insertion of the high-pressure nozzle 22 into the interior 16 of the low-pressure nozzle 12 is limited by an annular flange 27 which, when the high-pressure nozzle 22 is fully inserted, rests against the rear end of the low-pressure nozzle 12.
- This annular flange 27 is flattened on opposite ends, the resulting flats 28 are overlaid by rear extensions 29 of the low-pressure nozzle 12, so that the high-pressure nozzle 22 is thereby received in the low-pressure nozzle 12 so that it cannot rotate (FIG. 4).
- the cup-shaped housing 3, the low-pressure nozzle 12 arranged therein and the high-pressure nozzle 22 inserted into it are formed by two half-shells 30 surrounded, which together form a sleeve 31 when they are connected to each other surrounding the other components, for example by screws.
- the half-shells 30 carry threads 32 in the form of juxtaposed, inwardly projecting projections 33, these projections 33 plunge into the threads of the external thread 9, so that when the sleeve 31 is rotated, it is displaced in the longitudinal direction of the jet pipe.
- the two half-shells 30 carry two inwardly projecting ring flanges 34 and 35, the front ring flange 34 lies against the outside of the flange 21, while the rear ring flange 35 engages behind the stop elements 10 of the jet pipe 1.
- the dimensioning is chosen so that the sleeve 31 can only be adjusted over a relatively small angular range and thereby carries out a displacement of only a few millimeters. This displacement is limited on the one hand by the annular flange 35 striking the stop elements 10 and on the other hand by that the low-pressure nozzle 12 can no longer be inserted into the housing 3.
- the sleeve 31 In a first position, hereinafter referred to as the low pressure position, the sleeve 31 is rotated so that it abuts the stop elements 10 with the annular flange 35, the low pressure nozzle 12 and the high pressure nozzle 22 accommodated therein can, in this position, the sleeve 31 under the action of the liquid under high pressure conveyed through the jet pipe 1 are pushed out of the housing 3 to a maximum, so that a space remains between the sealing nozzle 6 and the sealing surface 26 of the high-pressure nozzle 22, through which the liquid emerging from the jet pipe 1 enters the annular gap 20 can occur.
- the liquid thus has two Flow paths are available, namely a first flow path through the high-pressure nozzle 22 to the outlet opening 24, and a second flow path through the annular gap 20, the openings 19 and the channels 18 to the outlet opening 17 of the low-pressure nozzle 12. Due to the relatively large outlet cross section of the two outlet openings, this occurs Liquid with relatively low pressure.
- the sleeve 31 In the other end position, referred to below as the high-pressure position, the sleeve 31 is rotated so far that the low-pressure nozzle 12 and thus also the high-pressure nozzle 22 accommodated therein are maximally pushed into the housing 3 via the ring flange 34.
- the sealing nozzle 6 enters with its sealing section 7 into the open end of the high-pressure nozzle 22 and first contacts the conical sealing step 25, so that the flow connection to the annular gap 20 is interrupted, but possibly not completely without the interposition of a seal.
- this seal is sufficient to increase the pressure inside the high-pressure nozzle 22, and this pressure increase means that the circular-cylindrical, thin-walled sealing section 7 is pressed elastically outwards, and it lies sealingly against the surrounding sealing surface 26 of the high-pressure nozzle 22 , and in this way there is a complete seal, which does not require the interposition of a sealing ring and also easily compensates for manufacturing tolerances.
- the liquid can thus only exit through the high-pressure nozzle 22 and the outlet opening 24, the outlet cross section of the outlet opening 24 is relatively small, and the emerging jet is thus a high-pressure jet.
- the structure of the arrangement described is very simple, in particular this results in great advantages during assembly.
- the low-pressure nozzle 12 is then pushed into the housing 3 from the front, here the sealing is ensured by only one ring seal.
- This arrangement is then surrounded by the two half-shells 30, which are applied to the housing 3 from the outside and connected to one another. No further assembly steps are necessary, and the number of individual parts used is also extremely low.
Landscapes
- Nozzles (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50304166T DE50304166D1 (de) | 2002-12-11 | 2003-11-13 | Düsenanordnung für ein hochdruckreinigungsgerät |
CA002508981A CA2508981A1 (en) | 2002-12-11 | 2003-11-13 | Nozzle assembly for a high-pressure cleaning device |
EP03779910A EP1569755B1 (de) | 2002-12-11 | 2003-11-13 | Düsenanordnung für ein hochdruckreinigungsgerät |
AU2003288048A AU2003288048A1 (en) | 2002-12-11 | 2003-11-13 | Nozzle assembly for a high-pressure cleaning device |
US11/145,511 US7360721B2 (en) | 2002-12-11 | 2005-06-02 | Nozzle assembly for a high-pressure cleaning device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10257783A DE10257783B3 (de) | 2002-12-11 | 2002-12-11 | Düsenanordnung für ein Hochdruckreinigungsgerät |
DE10257783.8 | 2002-12-11 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/145,511 Continuation US7360721B2 (en) | 2002-12-11 | 2005-06-02 | Nozzle assembly for a high-pressure cleaning device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004052548A1 true WO2004052548A1 (de) | 2004-06-24 |
Family
ID=31724870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/012687 WO2004052548A1 (de) | 2002-12-11 | 2003-11-13 | Düsenanordnung für ein hochdruckreinigungsgerät |
Country Status (9)
Country | Link |
---|---|
US (1) | US7360721B2 (de) |
EP (1) | EP1569755B1 (de) |
CN (1) | CN100431712C (de) |
AT (1) | ATE332191T1 (de) |
AU (1) | AU2003288048A1 (de) |
CA (1) | CA2508981A1 (de) |
DE (2) | DE10257783B3 (de) |
ES (1) | ES2268453T3 (de) |
WO (1) | WO2004052548A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8640973B2 (en) | 2006-09-07 | 2014-02-04 | Briggs And Stratton Corporation | Pressure washer wand having a nozzle selector |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL1663504T3 (pl) | 2004-09-13 | 2008-01-31 | Washtec Holding Gmbh | Lanca czyszcząca |
US7559489B2 (en) * | 2006-08-23 | 2009-07-14 | Valiant Corporation | High-pressure pulse nozzle assembly |
GB0717918D0 (en) * | 2007-09-14 | 2007-10-24 | Logicor Ltd | Toilet apparatus |
US7543762B1 (en) * | 2007-10-23 | 2009-06-09 | Shih-Chung Cheng | Spraying gun having different spraying modes |
US7871019B1 (en) * | 2009-07-01 | 2011-01-18 | Active Products International Limited | Pressure-adjustable jet spray nozzle for cleaning machine |
DE102009048899A1 (de) * | 2009-10-09 | 2011-04-14 | Eisenmann Anlagenbau Gmbh & Co. Kg | Düsenanordnung |
FR2952047B1 (fr) * | 2009-11-04 | 2011-12-09 | Sidel Participations | Dispositif de remplissage avec systeme de clapet particulier |
WO2016050314A1 (de) * | 2014-10-02 | 2016-04-07 | Alfred Kärcher Gmbh & Co. Kg | Düsenanordnung für flüssigkeit |
CN104492620B (zh) * | 2014-12-16 | 2017-08-25 | 江苏苏美达五金工具有限公司 | 一种用于高压清洗设备的高低压喷嘴组件 |
CN104984841B (zh) * | 2015-07-16 | 2017-05-31 | 江苏大学 | 一种喷洒形式可变的微喷头 |
CN108014935B (zh) * | 2017-11-08 | 2019-12-27 | 江苏苏美达五金工具有限公司 | 一种压力线性调节组合喷嘴及高压清洗设备 |
CN107913808B (zh) * | 2017-11-08 | 2019-09-10 | 江苏苏美达五金工具有限公司 | 一种防滴漏高低压组合喷嘴及高压清洗设备 |
CN108787193A (zh) * | 2018-08-30 | 2018-11-13 | 苏州小科清洁科技有限公司 | 一种高压清洗机的喷嘴及喷嘴装置 |
ES1247064Y (es) | 2020-03-25 | 2020-08-27 | Istobal Sa | Boquilla de conmutacion automatica |
CN114453320A (zh) * | 2022-02-25 | 2022-05-10 | 明士新材料有限公司 | 一种可视高压清洗装置 |
CN116271647B (zh) * | 2023-04-23 | 2023-09-19 | 平顶山浩泰化工有限公司 | 一种化工管路消防泡沫快速供应装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0501164A1 (de) * | 1991-02-11 | 1992-09-02 | FAIP S.r.L. OFFICINE MECCANICHE | Injektordüse für Hochdruckreinigungsgerät |
EP0638366A1 (de) * | 1993-08-12 | 1995-02-15 | Alfred Kärcher GmbH & Co. | Strahlrohr für ein Hochdruckreinigungsgerät |
EP1254719A1 (de) * | 2001-05-03 | 2002-11-06 | Nilfisk-Advance A/S | Austragsvorrichtung für ein Hochdruckreinigungsgerät |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4095747A (en) * | 1976-05-17 | 1978-06-20 | Specialty Manufacturing Company | High pressure coaxial flow nozzles |
DK149503C (da) * | 1983-11-25 | 1986-12-29 | Westergaard Knud Erik | Udsproejtningsdyse til hoejtryksrensere |
US4789104A (en) * | 1987-02-24 | 1988-12-06 | Specialty Manufacturing Co. | High pressure coaxial flow nozzles |
DK172650B1 (da) * | 1995-04-21 | 1999-04-06 | Kew Ind As | Sprøjtedyse til højtryksrensere |
IT1294939B1 (it) * | 1997-07-31 | 1999-04-23 | Arrow Line Srl | Lancia doppia di lavaggio a comando assiale |
-
2002
- 2002-12-11 DE DE10257783A patent/DE10257783B3/de not_active Expired - Fee Related
-
2003
- 2003-11-13 EP EP03779910A patent/EP1569755B1/de not_active Expired - Lifetime
- 2003-11-13 CA CA002508981A patent/CA2508981A1/en not_active Abandoned
- 2003-11-13 AT AT03779910T patent/ATE332191T1/de not_active IP Right Cessation
- 2003-11-13 CN CNB2003801057609A patent/CN100431712C/zh not_active Expired - Lifetime
- 2003-11-13 AU AU2003288048A patent/AU2003288048A1/en not_active Abandoned
- 2003-11-13 DE DE50304166T patent/DE50304166D1/de not_active Expired - Lifetime
- 2003-11-13 ES ES03779910T patent/ES2268453T3/es not_active Expired - Lifetime
- 2003-11-13 WO PCT/EP2003/012687 patent/WO2004052548A1/de not_active Application Discontinuation
-
2005
- 2005-06-02 US US11/145,511 patent/US7360721B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0501164A1 (de) * | 1991-02-11 | 1992-09-02 | FAIP S.r.L. OFFICINE MECCANICHE | Injektordüse für Hochdruckreinigungsgerät |
EP0638366A1 (de) * | 1993-08-12 | 1995-02-15 | Alfred Kärcher GmbH & Co. | Strahlrohr für ein Hochdruckreinigungsgerät |
EP1254719A1 (de) * | 2001-05-03 | 2002-11-06 | Nilfisk-Advance A/S | Austragsvorrichtung für ein Hochdruckreinigungsgerät |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8640973B2 (en) | 2006-09-07 | 2014-02-04 | Briggs And Stratton Corporation | Pressure washer wand having a nozzle selector |
Also Published As
Publication number | Publication date |
---|---|
CA2508981A1 (en) | 2004-06-24 |
US7360721B2 (en) | 2008-04-22 |
ES2268453T3 (es) | 2007-03-16 |
CN100431712C (zh) | 2008-11-12 |
EP1569755B1 (de) | 2006-07-05 |
EP1569755A1 (de) | 2005-09-07 |
DE10257783B3 (de) | 2004-03-18 |
US20050263623A1 (en) | 2005-12-01 |
DE50304166D1 (de) | 2006-08-17 |
ATE332191T1 (de) | 2006-07-15 |
AU2003288048A1 (en) | 2004-06-30 |
CN1726085A (zh) | 2006-01-25 |
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