EP1383612A1 - Raccord rapide pour lance de dispositif de nettoyage a haute pression - Google Patents

Raccord rapide pour lance de dispositif de nettoyage a haute pression

Info

Publication number
EP1383612A1
EP1383612A1 EP02742820A EP02742820A EP1383612A1 EP 1383612 A1 EP1383612 A1 EP 1383612A1 EP 02742820 A EP02742820 A EP 02742820A EP 02742820 A EP02742820 A EP 02742820A EP 1383612 A1 EP1383612 A1 EP 1383612A1
Authority
EP
European Patent Office
Prior art keywords
tubular body
tubular
housing
ejection device
liquid ejection
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.)
Withdrawn
Application number
EP02742820A
Other languages
German (de)
English (en)
Inventor
Lasse Lind
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.)
Nilfisk AS
Original Assignee
Nilfisk Advance AS
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 Nilfisk Advance AS filed Critical Nilfisk Advance AS
Priority to EP02742820A priority Critical patent/EP1383612A1/fr
Publication of EP1383612A1 publication Critical patent/EP1383612A1/fr
Withdrawn legal-status Critical Current

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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1609—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a lift valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices

Definitions

  • a liquid ejection device for a pressure-cleaning apparatus comprising a housing having means for receiving a liquid supply tube and directing the liquid flow to a tubular body including a first end of the tubular body being connectable to connecting means of the housing and a second end with an ejection nozzle.
  • the US patent no. 6,016,975 discloses a washing gun, where the tubular body is permanently fastened to the housing.
  • the tubular body is provided with two concentric flow channels with an axially operated dual pressure switching means at its first end.
  • the first end is provided with a cylindrical bush with a flow passage that is permanently fastened to the hydrocleaner, i.e. the housing thereof.
  • the disadvantage of this device is that the tubular body cannot be changed without the use of special tools, if at all.
  • the permanently fastening is provided by a threaded mounting, and if the tubular body is screwed out of the receiving thread in the housing, the risk of damaging the sealed engagement is eminent.
  • the tubular body must be very accurately mounted on the housing in order to ensure a safe and reliable cleaning action by the liquid ejection device.
  • this coupling device is unsuitable for connecting the tubular body to the housing since the tubular body may carry a pressure regulation mechanism and must be held very firmly due to the long pointy tubular body and the high pressure of the flow inside the housing and the tubular body. It is therefore the object of the invention is to provide a releasable connection mechanism for a liquid ejection device for making it possible to change the tubular body in a quick and reliable manner without the use of any tools.
  • a liquid ejection device of the initially mentioned kind wherein the connecting means includes a tubular support element for receiving and supporting the tubular body, and that the support element is provided with locking means comprising a tubular sleeve, which is provided around and axially slidable on the tubular support element, and biasing means extending into co-operating receiving means in the tubular body for retaining the tubular body in a predetermined position, and that the locking means include operation means, which are operated by pressure, and movement transformation means transforming said generally radial pressure activation to an axial movement for operating the biasing means and sliding the tubular sleeve.
  • a liquid ejection device with quick release coupling of a tubular body to the housing is provided.
  • pressure regulating means may be provided in the housing whereby the tubular body may be designed in a more simple and more cost effective manner, just as the weight distribution of the entire device may be more comfortable seen from an operators point of view, as more weight may be moved to the housing and away from the tubular body.
  • the release of the lance may be carried out in a quick and efficient manner by the person operating the ejection device.
  • the operation means include an activation member, which is moveable in a radial direction and cooperating with movement transformation means including a radially outwardly projecting member fixedly mounted on the tubular sleeve.
  • the activation member is pivotably mounted in the housing at one end and provided with a roller member at the opposite end, said roller member cooperating with an inclined receiving surface of the radially outwardly projecting member on the tubular sleeve.
  • no further spring force than the biasing means of the tubular sleeve is needed to ensure that the activation member is returned to its rest position.
  • the pressure force needed to operate the release mechanism may be determined by the spring force of the biasing means and by the angle of inclination of the surface with respect to the axial direction.
  • the required pressure force of the operating means is preferably obtainable by a thump of the operator.
  • the activation member is arranged on the opposite side of the housing than the side of the housing where liquid flow regulation operation means are arranged.
  • the operator may change the lance, i.e. the tubular body, with a two-hand grip, i.e. with one hand on the tubular body and the other on the normal operating position around the housing.
  • a spring is provided between the tubular support element and the tubular sleeve.
  • the sleeve is retained in a resting position where it is locking the biasing means so that the tubular body is retained in the housing.
  • the biasing means comprises a number of balls loosely fitted in apertures on the tubular support element, said balls having a diameter which is larger than the thickness of the tubular wall of the tubular support element.
  • the connecting means include an end surface of the first end of the tubular body that abuts an abutment surface on the housing.
  • the tubular body is mounted in the housing is a predetermined position whereby a predictable axial position is achieved.
  • the biasing means may be arranged in an annular ring on the tubular support element in a predetermined distance from the abutment surface of the connecting means.
  • the receiving means may consist of an annular recess on the tubular body in a distance from the end surface corresponding to the predetermined distance between the biasing means and the abutment surface.
  • the predetermined outer shape of the tubular body may be provided on several different types of tubular bodies.
  • the outer shape of the first end of the tubular body preferably corresponds to the internal shape of the connection means of the housing.
  • the tubular body comprises an inner tube and an outer tube, said tubes being substantially concentric and defining a central flow channel and an annular second flow channel.
  • the central flow channel is substantially aligned with a feeding flow passage of a valve member of pressure regulation means provided in the housing.
  • the flow passage of the valve member is constantly in flow communication with the central flow channel of the tubular body, irrespective of the position of the valve member.
  • the device according to this embodiment of the invention is also advantageous since the pressure regulation means is provided in the housing and that the dual channel tubular body is releasably connectable directly to the housing and the valve member of the pressure regulation means.
  • the second flow passage is only open when the device is adjusted in such a way that a pressure less than maximum pressure is to be ejected from the nozzle of the device.
  • a particular simple and reliable cooperation between the tubular body and the valve member is achieved in order to provide the pressure regulation.
  • fig. 1 is a perspective view of a liquid ejection device according to the invention
  • fig. 2 is a cross-section side view of the assembled device
  • fig. 3 is a cross-section side view of the housing
  • fig. 4 is a cross-section side view of the tubular body of the device.
  • a liquid ejection device In fig. 1, a liquid ejection device is shown. It comprises a housing 2 or main body with a trigger 3 for operating the device.
  • the housing 2 has a connecting means 4 for receiving and connecting a liquid supply pipe 5.
  • the supplied liquid is supplied at a certain pressure from a base station (not shown).
  • the liquid may be water, a cleaning agent, or a mixture thereof.
  • pressure regulating means 6 are provided in the housing 2 in the housing 2, pressure regulating means 6 are provided.
  • the liquid flows through the housing 2 via the pressure regulating means 6 and into a tubular body 7, often referred to as a lance.
  • the tubular body 7 is provided with a first end adapted to be releasably connected to the housing 2.
  • the liquid is ejected from a spraying nozzle 8 at the second end of the tubular body.
  • the tubular body 7 may preferably be provided with a handle 9 for holding and directing the direction of liquid spray from the nozzle 8.
  • the tubular body 7 is cylindrical in shape.
  • the handle 9 may be made with means for releasably fastening it around the tubular body 7.
  • the handle 9 may be pivoted from one side of the device to the other, thereby setting up the device for left-handed or right-handed operator.
  • the handle 9 may be shifted in the axial direction.
  • the device shown in fig. 2 comprises a housing 2 with a trigger 3 for operating the main valve 29.
  • a supply pipe 5 is connected to coupling means 4.
  • the supplied liquid is pressurised and fed into a flow passage 15 and through the flow passage 14a and potentially also the flow passage 14b depending on the position of a valve member 10 of the pressure regulation means 6 that is accommodated in the housing 2. From the housing 2, the pressurised liquid is fed into the tubular body 7, which is connected to the housing 2.
  • the connecting means of the housing 2 includes a tubular extension 31 fixedly mounted in the first housing 2.
  • a cylindrical section is provided on the housing 2 wherein the outlets of the flow passages 14a, 14b are arranged.
  • the tubular body 7 is inserted into the tubular extension 31 that both receives and supports the tubular body 7 once inserted.
  • a tubular section 32 is provided having an increased internal diameter compared to the internal diameter of the tubular extension 31.
  • the tubular section 32 is provided with a threaded portion to which a tubular support element 33 is mounted.
  • the first end of the support element 33 substantially encompasses the end section of the tubular extension 31, which is provided with an inwardly protruding, annular, preferably conic receiving and aligning surface 40 for receiving and positioning the tubular body 7 by cooperating with a corresponding positioning surface 41 on the tubular body 7 (see figs. 2 and 4).
  • the tubular support element 33 is provided with a protrusion 34 for receiving a helical spring 35, which surrounds a portion of the tubular support element 33.
  • sealing members 42 are provided at the inner surfaces of the tubular extension 31 and the tubular support element 33 in order to ensure a watertight coupling between the housing 2 and the tubular body 7.
  • a tubular sleeve 38 is axially shiftable along the tubular support element 33.
  • the sleeve 38 is provided with a cylindrical portion 39, which has a diameter that just fits around the tubular support element 33, whereas the rest of the sleeve 38 has a larger inner diameter than the outer diameter of the tubular support element 33.
  • the end of the cylindrical portion 39 receives the other end of the helical spring 35 whereby the sleeve 38 is spring loaded and held in a resting position locking the biasing means 30.
  • annular member 50 On the outside of the sleeve 38 surrounding the cylindrical portion 39, an annular member 50 is fixedly mounted around the sleeve 38.
  • This annular member 50 is provided with a protruding rim flange 51 having an inclined surface 52 at its side pointing away from the insertion area of the tubular body 7.
  • a push button 54 is pivotally mounted in the housing 2 by a pivot pin 55 at one end of the push button 54. At the other end, a roller 53 is mounted. This roller 53 is arranged in such a way that it engages the inclined surface 52, and when the push button 54 is pressed in a radial direction, i.e. downwards, the roller 53 pushed on the inclined surface 52, which in turn causes the sleeve 38 to be moved forward and thereby release locking means for the tubular body 7 from its locked position in the housing 2.
  • the biasing means 30 may be released so that the tubular body 7 may be removed or inserted into the receiving means of the housing 2.
  • the biasing means 30 include a ring of apertures 43 provided in the tubular support element 33.
  • balls 36 with an at least slightly larger diameter than the thickness of the tubular wall of the support element 33 are provided.
  • the balls 36 are loosely retained in the apertures 43, and could be spring-loaded in the apertures 43 is appropriate.
  • the cylindrical portion 39 of the sleeve 38 blocks the apertures 43 when the sleeve 38 is in the resting position, as shown in fig. 2. This means that the balls 36 protrude into the inner space of the tubular support element 33 and into an annular groove 37 of the tubular body 7 and thereby prevents the tubular body 7 from being moved in the axial direction.
  • the groove 37 and the annularly arranged balls 36 are positioned with the corresponding axial distances from the positioning surfaces 40 and 41 of the two parts 2, 7 to be joined.
  • an accurate coupling between the tubular body 7 and the housing 2 is achieved, wherein the first end of the tubular body 7, in particular the receiving surface 25 of the end piece 26 (see fig. 4) is accurately positioned relative to the receiving means of the housing 2.
  • tubular body may be a double tube, as described above or any other type of tubular body with one or more flow channels.
  • This and other embodiments and equivalents thereof may be provided without departing from the scope of the invention, as set forth in the accompanying claims.

Landscapes

  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Nozzles (AREA)

Abstract

Cette invention concerne un dispositif éjecteur de liquides utilisé dans un appareil de nettoyage à haute pression, comprenant un logement pourvu d'un élément conçu pour recevoir un tuyau d'amenée de liquide et pour orienter l'écoulement du liquide vers un corps tubulaire. Une première extrémité du corps tubulaire peut être reliée à un élément de connexion du logement, et une seconde extrémité du corps tubulaire peut être reliée à une tuyère d'éjection. Cet élément de connexion comprend un élément de support tubulaire servant à recevoir et à maintenir le corps tubulaire, lequel élément de support est pourvu d'un élément de verrouillage comprenant un manchon tubulaire, disposé autour de l'élément de support tubulaire de manière qu'il puisse coulisser axialement sur celui-ci, et d'un élément d'activation s'étendant dans un élément récepteur de coopération dans le corps tubulaire afin de maintenir le corps tubulaire dans une position prédéterminée. Ledit élément de verrouillage comprend un élément d'actionnement, qui est actionné par pression, et un élément de conversion de déplacement qui transforme cet actionnement par pression globalement radial en un déplacement axial servant à actionner l'élément d'actionnement et à faire coulisser le manchon tubulaire. Cette invention permet d'obtenir un dispositif éjecteur de liquides à raccord rapide entre un corps tubulaire et le logement.
EP02742820A 2001-05-03 2002-05-03 Raccord rapide pour lance de dispositif de nettoyage a haute pression Withdrawn EP1383612A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02742820A EP1383612A1 (fr) 2001-05-03 2002-05-03 Raccord rapide pour lance de dispositif de nettoyage a haute pression

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01201630 2001-05-03
EP01201630A EP1254724A1 (fr) 2001-05-03 2001-05-03 Dispositif de décharge pour un appareil de nettoyage à haute pression
PCT/DK2002/000291 WO2002089997A1 (fr) 2001-05-03 2002-05-03 Raccord rapide pour lance de dispositif de nettoyage a haute pression
EP02742820A EP1383612A1 (fr) 2001-05-03 2002-05-03 Raccord rapide pour lance de dispositif de nettoyage a haute pression

Publications (1)

Publication Number Publication Date
EP1383612A1 true EP1383612A1 (fr) 2004-01-28

Family

ID=8180251

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01201630A Withdrawn EP1254724A1 (fr) 2001-05-03 2001-05-03 Dispositif de décharge pour un appareil de nettoyage à haute pression
EP02742820A Withdrawn EP1383612A1 (fr) 2001-05-03 2002-05-03 Raccord rapide pour lance de dispositif de nettoyage a haute pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01201630A Withdrawn EP1254724A1 (fr) 2001-05-03 2001-05-03 Dispositif de décharge pour un appareil de nettoyage à haute pression

Country Status (2)

Country Link
EP (2) EP1254724A1 (fr)
WO (1) WO2002089997A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101080B (zh) * 2010-11-19 2012-08-22 浙江亚特电器有限公司 一种高压枪组合枪头
US9943205B2 (en) * 2012-05-16 2018-04-17 Kevin M. Letera Multi-function surface cleaning apparatus
EP2922637B1 (fr) * 2012-11-21 2017-10-04 Alfred Kärcher GmbH & Co. KG Pistolet de pulvérisation à haute pression
DE102014108699A1 (de) 2014-06-20 2015-12-24 Alfred Kärcher Gmbh & Co. Kg Kupplungsanordnung für schraubkupplung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568515A (en) * 1947-01-02 1951-09-18 Albert T Scheiwer Combined nozzle and coupling member
US2747938A (en) * 1952-12-15 1956-05-29 Albert T Scheiwer Couplings for sprinklers and nozzles
FR1478859A (fr) * 1966-05-05 1967-04-28 Raccord pour la commande de l'écoulement d'un fluide
US4014467A (en) * 1975-11-03 1977-03-29 Duff-Norton Company, Inc. Dishwasher and coupling
US4114812A (en) * 1975-11-07 1978-09-19 The Black And Decker Manufacturing Company Spray nozzle
DE9007363U1 (fr) * 1990-02-08 1991-06-13 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
US5253716A (en) * 1991-11-27 1993-10-19 Mitchell Wallace F Fog producig firefighting tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02089997A1 *

Also Published As

Publication number Publication date
WO2002089997A1 (fr) 2002-11-14
EP1254724A1 (fr) 2002-11-06

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