EP0925124B1 - Lance de nettoyage - Google Patents

Lance de nettoyage Download PDF

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Publication number
EP0925124B1
EP0925124B1 EP97939027A EP97939027A EP0925124B1 EP 0925124 B1 EP0925124 B1 EP 0925124B1 EP 97939027 A EP97939027 A EP 97939027A EP 97939027 A EP97939027 A EP 97939027A EP 0925124 B1 EP0925124 B1 EP 0925124B1
Authority
EP
European Patent Office
Prior art keywords
barrel
barrels
valve means
detergent
mixing chamber
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
EP97939027A
Other languages
German (de)
English (en)
Other versions
EP0925124A1 (fr
Inventor
Colin John Kirk
Martin Williamson
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.)
Deb IP Ltd
Original Assignee
Deb IP Ltd
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
Priority claimed from GBGB9618772.9A external-priority patent/GB9618772D0/en
Application filed by Deb IP Ltd filed Critical Deb IP Ltd
Publication of EP0925124A1 publication Critical patent/EP0925124A1/fr
Application granted granted Critical
Publication of EP0925124B1 publication Critical patent/EP0925124B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/005—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0062—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/244—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle
    • B05B7/2443—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together downstream of the container before discharge
    • 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

Definitions

  • the present invention relates to a cleaning lance, of the type used for cleaning the exterior of vehicles for example.
  • cleaning lances normally incorporate a barrel having a high pressure nozzle which is used to direct a high pressure water jet at the exterior of the vehicle.
  • cleaning lances are normally supplied with pressurised water from a pump driven by an electric motor or a petrol engine and in many cases detergent is fed into the water flow at the site of the pump.
  • FR-1,363,426 discloses a cleaning lance having a mixing chamber in which an axially directed water jet sucks in air from an air inlet and detergent from a detergent inlet and forms a foam which is ejected axially from the outlet of the chamber.
  • the air inlet and detergent inlet are diametrically opposed within the mixing chamber.
  • FR-A-2,519,881 discloses a hand held cleaning lance having two barrels mounted on a common body and valve means incorporated in the body of the lance and operable by the user to switch pressurised fluid from an inlet of one barrel to an inlet of the other barrel, the barrels being arranged to form jets of different characteristics and the valve means comprising a freely movable valve member which is retainable by fluid pressure to selectively block said inlets.
  • valve member easily rolls from one side to the other if pressure is interrupted, so it is possible to accidentally switch to a detergent stream. This can be dangerous because detergent is sometimes corrosive.
  • US-A-4202495 discloses a nozzle head selector for one or more nozzles located at the end of a single barrel, the selector being located at the nozzle end of the barrel.
  • the selector has a changeover device formed by a ball which moves under gravity when the pressure is turned off to allow changeover of jets without changing the nozzle head, the jet being selected by slightly turning the barrel.
  • Such a changeover device in being located at the nozzle end is able to operate under lower pressures and although some leakage may be acceptable at the nozzle end, no leakage is acceptable at a user end of a cleaning lance.
  • the present invention seeks to at least partially mitigate the foregoing difficulties.
  • valve means comprising an elongate arcuate (preferably semi-circular) chamber having an inlet and having respective spaced apart outlets communicating with the barrels, a rolling or sliding valve member (such as a steel ball for example) being located in the chamber and being arranged to move within the chamber to block one of the outlets on tilting the lance and to block the other of the outlets automatically (e.g. by the action of gravity) when the pressure is interrupted.
  • a rolling or sliding valve member such as a steel ball for example
  • the lance is preferably provided with trigger means for blocking fluid pressure to enable such movement of the valve member and for reapplying fluid pressure to maintain the valve member in position against the last-blocked outlet by fluid pressure irrespective of the angle of tilt of the lance.
  • valve means is latched by fluid pressure which allows for rapid change in comparison with a non-latching, manually operated arrangement which involves a significant delay and dividing of the flow.
  • an elongate cleaning lance is shown to comprise a water inlet 1 provided with a trigger attachment (not shown) for applying and releasing water under pressure.
  • the water inlet 1 communicates with a valve comprising a steel ball 14 which runs within a semi-circular ball valve chamber 15 as best seen in Figure 2.
  • the ball 14 has a lower default position in which it blocks an inlet 18 to the foamer barrel 12 and has an upper position at which it blocks an inlet 17 to a pressure stream barrel 5 which generates a water jet.
  • the path of the steel ball 14 between these two extreme positions is semi-circular and accordingly it can be moved between these two positions by tilting the lance about its longitudinal axis after releasing the pressure with the trigger attachment connected to water inlet 1.
  • a water jet is formed within a mixing chamber 19 by a Venturi nozzle 3 which is supplied with high pressure water by conduit 6 from inlet 18.
  • the resulting jet draws in detergent 11 via a feed tube 10, mounting 8, detergent conduit 7 and needle valve 2 which controls the flow of detergent into the mixing chamber 19.
  • the resulting mixture of water and detergent exits the mixing chamber via a further Venturi nozzle 4 which draws in air by Venturi action through an annular air inlet 20 which communicates with an annular passage 21 ( Figure 1B) which in turn has an air inlet open 23 to the atmosphere.
  • the mixture of air, water and detergent passing along the foamer barrel 12 is foamed by a mesh 13 ( Figure 1B) and forms a stream of cleaning foam.
  • the mesh is a conventional mesh of plastics material (polypropylene or nylon).
  • Annular passage 21 extends axially of the lance around barrel 12 and at its end remote from that end coupled with air inlet 20 there is provided one or more axially extending walls circumferentially spaced about the outer peripheral surface of the barrel 12 and defining passages therebetween communicating with the external atmosphere via opening(s) 23 in the external surface of barrel 12 prior to but adjacent to foaming mesh 13 in the direction of movement of the water detergent and air mixture through barrel 12. Therefore when air is required it is drawing through opening 23 into the passages between walls 22 and then into the Venturi 4 via the annular passage 21 and air inlet 20.
  • a removable detergent cartridge 9 provided with its own detergent feed tube 10 and associated cap is attachable to mounting 8 by a standard bayonet fitting (not shown).
  • the ball 14 will normally fall to the lower position at which it blocks inlet 18 by the action of gravity.
  • the ball 14 can be moved to block inlet 17 and at this point pressure can be reapplied by the trigger (not shown) to maintain the ball in this position and form a foam jet by flow through inlet 18 to mixing chamber 19.
  • the water pressure is momentarily released by releasing the trigger, the lance is tilted slightly about its longitudinal axis to enable the ball 14 to roll back to its lower position, and fluid pressure is then reapplied by the trigger, allowing water to flow directly via inlet 17 to the upper barrel to form a cleaning stream.
  • the cleaning lance of the present invention can be used not only for vehicle cleaning but also for other cleaning applications, such as abattoir sanitising for example.

Landscapes

  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Air Bags (AREA)
  • Non-Flushing Toilets (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Claims (3)

  1. Lance de nettoyage comprenant deux canons adjacents, un premier canon (5) qui est disposé de façon à former un jet de rinçage et un second canon (12) qui est disposé de façon à former un jet mélangé d'eau et de détergent, le premier et le second canons ayant une entrée d'eau commune (1) et des moyens de soupape (15) pour coupler de façon sélective l'entrée d'eau à l'un respectif des canons (5,12) et une liaison (8) disposée de façon à supporter un conteneur (9) pour le détergent en dessous des deux canons, le détergent étant admis à l'intérieur dudit second canon (12) dans lequel second canon (12) est prévue une chambre de mélange (19) dans laquelle, par une action de Venturi, l'eau injectée dans la chambre de mélange est mélangée avec le détergent provenant dudit conteneur (9) et est éjectée à partir d'une buse de sortie (4), caractérisée en ce que ledit premier et ledit second canons sont disposés l'un au-dessus de l'autre, lorsque la lance est utilisée, avec la liaison (8) qui est disposée de façon à retenir le conteneur (9) qui est disposé au-dessous des canons, une structure à mailles (13) étant disposée dans le second canon (12) en aval de la chambre de mélange (19) pour faire mousser le mélange, le premier et le second canons (5,12) étant couplés en verrouillant les moyens de soupape (15) à une entrée commune d'eau (1), les moyens de soupape comportant une position par défaut dans laquelle lesdits moyens de soupape relient de façon sélective le premier canon (5) à l'entrée d'eau, lesdits moyens de soupape pouvant être actionnés par un utilisateur en réduisant la pression de l'eau à l'entrée d'eau ; où lesdits moyens de soupape (15) comprennent un organe de soupape roulant ou coulissant (14) qui est mobile de façon à bloquer sélectivement, soit une entrée inférieure (18) vers le second canon (12), soit une entrée supérieure (17) vers le premier canon (5), et lesdits moyens de soupape (15) définissent un trajet incurvé pour l'organe de soupape (14) lorsqu'il se déplace, lorsque la lance est utilisée, entre ses positions sélectives de blocage.
  2. Lance de nettoyage selon la revendication 1, dans laquelle les moyens de soupape (15) peuvent être commutés entre leurs positions de blocage sélectives en faisant basculer ou tourner la lance.
  3. Lance de nettoyage selon la revendication 1 ou 2, dans laquelle la provision de détergent (9) est située proche d'une extrémité proximale de la lance de nettoyage et est espacée de la chambre de mélange (19) avec laquelle elle communique par l'intermédiaire d'un conduit (7) comportant une soupape (2) de commande de l'écoulement, la chambre de mélange (19) étant située dans la partie médiane ou à l'extrémité distale de la lance de nettoyage.
EP97939027A 1996-09-09 1997-09-04 Lance de nettoyage Expired - Lifetime EP0925124B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US2629196P 1996-09-09 1996-09-09
GBGB9618772.9A GB9618772D0 (en) 1996-09-09 1996-09-09 Cleaning lance
GB9618772 1996-09-09
US26291P 1996-09-09
PCT/GB1997/002373 WO1998009739A1 (fr) 1996-09-09 1997-09-04 Lance de nettoyage

Publications (2)

Publication Number Publication Date
EP0925124A1 EP0925124A1 (fr) 1999-06-30
EP0925124B1 true EP0925124B1 (fr) 2001-03-28

Family

ID=26310000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97939027A Expired - Lifetime EP0925124B1 (fr) 1996-09-09 1997-09-04 Lance de nettoyage

Country Status (13)

Country Link
EP (1) EP0925124B1 (fr)
AT (1) ATE200040T1 (fr)
AU (1) AU741321B2 (fr)
CA (1) CA2266023A1 (fr)
DE (1) DE69704431T2 (fr)
DK (1) DK0925124T3 (fr)
ES (1) ES2158578T3 (fr)
GB (1) GB2316893B (fr)
GR (1) GR3035649T3 (fr)
NO (1) NO313230B1 (fr)
NZ (1) NZ334455A (fr)
PT (1) PT925124E (fr)
WO (1) WO1998009739A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6378789B1 (en) * 2000-06-01 2002-04-30 S. C. Johnson Commercial Markets, Inc. Combination spray apparatus
US6260772B1 (en) * 2000-06-14 2001-07-17 Ecolab Inc. Dispensing and rinsing gun
DE10342000A1 (de) * 2003-09-08 2005-04-07 Alfred Kärcher Gmbh & Co. Kg Verfahren zum Erzeugen eines Reinigungsmittelschaumes sowie Schaumerzeugungssystem zur Durchführung des Verfahrens
DK2345484T3 (en) 2010-01-15 2017-09-11 Nilfisk As Cleaning apparatus and cleaning procedure
WO2014125278A2 (fr) * 2013-02-12 2014-08-21 Tetrosyl Limited Dispositif de pulvérisation produisant de la mousse et tête de pulvérisation destinée à être utilisée dans ce dernier
HUE060326T2 (hu) 2013-10-02 2023-02-28 Aerocore Tech Llc Tisztítási eljárás sugárhajtású hajtómûvekhez
US11643946B2 (en) 2013-10-02 2023-05-09 Aerocore Technologies Llc Cleaning method for jet engine
DE202017102731U1 (de) 2017-05-08 2018-08-09 Otto Christ Ag Waschstation zur Reinigung von Fahrzeugen an einem SB-Waschplatz mit einer Schaumschwall-Sprühpistole

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965309A (en) * 1959-09-01 1960-12-20 Clarence F Parrott Mixing apparatus
FR1363426A (fr) 1963-05-03 1964-06-12 Perfectionnement apporté aux jets et lances d'arrosage, notamment à ceux pour le lavage des véhicules
US3799451A (en) * 1972-12-13 1974-03-26 K Kollmai Fluid flow wand assembly
US4277030A (en) * 1976-01-22 1981-07-07 Hechler Iv Valentine Spray and foam dispensing nozzle
DE2707663A1 (de) * 1977-02-23 1978-08-24 Kaercher Gmbh & Co Alfred Umschaltvorrichtung zum wahlweisen verbinden einer medienzufuehrleitung mit einer von mehreren abfuehrleitungen
DE2819345C3 (de) * 1978-05-03 1981-02-05 Josef 7918 Illertissen Kraenzle An dem Strahlrohr eines Spriihreinigungsgerätes auswechselbar befestigbarer Mehrfachdüsenkopf
FR2519881B1 (fr) 1982-01-21 1985-10-18 Tecalemit Equip Pistolet permettant la pulverisation d'une solution aqueuse d'un produit de base, suivie d'un rincage
DE3214180A1 (de) * 1982-04-17 1983-10-20 Wolfgang 4800 Bielefeld Suttner Zusatzgeraet fuer eine spritzpistole
DE3311382C2 (de) * 1983-03-29 1985-02-21 Alfred Kärcher GmbH & Co, 7057 Winnenden Verfahren zum Steuern eines Hochdruckreinigungsgerätes und Hochdruckreinigungsgerät zur Durchführung dieses Verfahrens
US4805700A (en) * 1987-05-29 1989-02-21 Mine Safety Appliances Company Foam generator adjustable to produce foam having various expansion ratios
US4878619A (en) * 1988-11-01 1989-11-07 Environmental Delivery Systems, Inc. Fluid spray system having a replaceable cartridge
CA2081392A1 (fr) * 1992-10-26 1994-04-27 Toshiharu Fukai Generateur de bulles d'air
US5445226A (en) * 1993-05-04 1995-08-29 Scott Plastics Ltd. Foam generating apparatus for attachment to hose delivering pressurized liquid

Also Published As

Publication number Publication date
WO1998009739A1 (fr) 1998-03-12
NO991070L (no) 1999-03-04
ES2158578T3 (es) 2001-09-01
GR3035649T3 (en) 2001-06-29
NO313230B1 (no) 2002-09-02
GB9718946D0 (en) 1997-11-12
AU741321B2 (en) 2001-11-29
CA2266023A1 (fr) 1998-03-12
DK0925124T3 (da) 2001-08-13
EP0925124A1 (fr) 1999-06-30
ATE200040T1 (de) 2001-04-15
DE69704431T2 (de) 2001-08-23
GB2316893B (en) 2001-01-10
PT925124E (pt) 2001-08-30
NO991070D0 (no) 1999-03-04
DE69704431D1 (de) 2001-05-03
NZ334455A (en) 2000-04-28
GB2316893A (en) 1998-03-11
AU4125797A (en) 1998-03-26

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