WO1988007895A1 - Systeme de nettoyage - Google Patents

Systeme de nettoyage Download PDF

Info

Publication number
WO1988007895A1
WO1988007895A1 PCT/AU1988/000097 AU8800097W WO8807895A1 WO 1988007895 A1 WO1988007895 A1 WO 1988007895A1 AU 8800097 W AU8800097 W AU 8800097W WO 8807895 A1 WO8807895 A1 WO 8807895A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
cleaning liquid
pressurised
line
liquid
Prior art date
Application number
PCT/AU1988/000097
Other languages
English (en)
Inventor
Robert James Green
Terence Arthur Bevan
Original Assignee
Foamtech Pty. 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 to KR1019890702122A priority Critical patent/KR900700715A/ko
Application filed by Foamtech Pty. Ltd. filed Critical Foamtech Pty. Ltd.
Publication of WO1988007895A1 publication Critical patent/WO1988007895A1/fr

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
    • 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
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device

Definitions

  • a CLEANING SYSTEM This invention relates to cleaning systems and particularly to systems for the delivery of aerated cleaning liquid (foam) for cleaning large areas such as can be found in abattoirs and the like.
  • the most basic system known in the past for foam cleaning utilizes a supply of cold water to a venturi which is connected to a drum of cleaning liquid.
  • the cleaning liquid is delivered with the assistance of air also fed into the venturi to generate a foam which is expelled through a hose at the cleaning site.
  • the major disadvantage of this basic form is that the water feed is not necessarily constant and it is not possible to meter the chemical concentration arriving at the cleaning site in the form of foam.
  • the system therefore is quite wasteful of expensive cleaning liquid (chemical) and cannot enable the use of hot water or alkaline which is commonly desirable.
  • a drum of cleaning liquid including a foaming agent and alkaline is connected to a pump operated by air to draw the liquid up and through a venturi where it is aerated with a- supply of air into a foam for subsequent delivery through a hose to the cleaning site.
  • a pump operated by air to draw the liquid up and through a venturi where it is aerated with a- supply of air into a foam for subsequent delivery through a hose to the cleaning site.
  • FIG. 1 it can be seen further that an in line lubricator (oiler) is provided in the air line.
  • An on/off valve ensures a clean flow of air.to the pump.
  • a disadvantage of the prior art as shown in Fig. 1 is that should the delivery hose kink, the cleaning liquid fills the oiler and the pump head which can damage the pump and render the cleaning device inoperable.
  • a further problem with the prior art system just described is that should the drum of cleaning liquid empty, and as a result the pump empty, the pump races leading to pump damage. It is an object of the present invention to provide a cleaning system which overcomes or alleviates the problems of the prior art as described above.
  • a cleaning system for dispensing an aerated cleaning liquid including: a container for a cleaning liquid to be dispensed in aerated form, means for causing pressurisation of the cleaning liquid in use, a liquid supply line for conveying pressurised cleaning liquid from the container, a pressurised air line for receiving air under pressure, a mixing means for receiving pressurised air from the air line and also for receiving liquid under pressure from the liquid supply line and being arranged to cause mixing of pressurised air and pressurised cleaning liquid therein to form an aerated form of the cleaning liquid, a discharge outlet downstream of the mixing means and where cleaning liquid is in use discharged in an aerated form, and a selectively operable control valve located at or in close proximity to the discharge outlet, the control valve being operable by a user to selectively allow or stop discharge of aerated cleaning liquid from the discharge outlet.
  • the container for cleaning liquid is a pressure vessel and the means for supplying liquid under pressure includes a pressurised air inlet to the pressure vessel, the pressurised air inlet being supplied in use with pressurised air so as to pressurise cleaning liquid in the vessel and enable supply of pressurised cleaning liquid through the liquid supply line, the pressurised air inlet and the pressurised air line leading to the mixing means being supplied from a common pressurised air source.
  • the pressurised air supplied to the pressure vessel may be at a pressure from 10 to 140 ⁇ si, preferably less than 60 psi (about 410 kpa) and most preferably about 20 psi, the pressurised air line receiving pressurised air at substantially greater pressure than the pressure vessel.
  • the mixing means is located at or near the discharge outlet, the pressurised air line and the liquid supply line extending over a substantial distance before reaching the mixing means whereby the aeration of the cleaning liquid occurs at or close to the discharge outlet.
  • the mixing means preferably comprises a mixing valve having an inlet connected to the pressurised air line and an inlet connected to the liquid supply line, the mixing valve being selectively operable to enable flow of air and cleaning liquid into a mixing zone provided in the mixing valve, the aerated cleaning liquid created in the mixing zone in use passing through an outlet to the control valve and thence to the discharge outlet.
  • the mixing means is located relatively close to the container, the system including a foam line extending from the mixing means to the discharge outlet, the foam line conveying in use aerated cleaning liquid from the mixing means to the discharge outlet.
  • the means for causing pressurisation of the cleaning liquid may comprise a pump associated with the container and operative to pump cleaning liquid from the container along the liquid supply line, the pump comprising an air operated pump operative to be driven by compressed air supplied through a pump air supply line, the pump air supply line including an air supply regulator operative to meter the supply of air to the pump so as to maintain the speed of the pump below a predetermined level.
  • the air operated pump and the pressurised air line to the mixing means are preferably supplied from a common pressurised air source, the system including a non-return valve in the air supply line which is operative to prevent flow of pressurised liquid from the mixing means through the pressurised air line thereby reaching the pressurised air source or the air operated pump.
  • the system preferably further includes a non-return valve located within the pressurised air line and operative to prevent cleaning liquid passing through the air line from the mixing means in the event of loss of pressure in that line.
  • the liquid supply line between the container and the mixing means includes a restrictor valve operative to control the maximum flow of cleaning liquid being supplied through the liquid supply line to the mixing means.
  • Fig. 1 shows a prior art cleaning system
  • Fig. 2 shows a cleaning system according to a preferred embodiment of the invention
  • Fig. 3 shows a cleaning system according to an alternative preferred embodiment
  • Fig. 4 shows a yet further preferred embodiment of a cleaning system.
  • the container or drum 1 contains the chemical liquid comprising foam agent, alkaline and hot water, although hot water is not essential. As the drum is filled with hot water, preferably as close to boiling point as possible, alkaline is added first and then the foaming agent.
  • the air line 3 has placed therein an in line lubricator 5, an air supply regulator 6 to meter the air to the pump, in line air filter 7 and on/off valve 8.
  • the regulator 6 may be a runaway protector or a regulator of a known type that meters the air going into the pump 2
  • the liquid supply line 4a has placed therein a restrictor valve 9 to control the maximum flow of cleaning liquid, mixing means 1Q shown
  • a branch of the air supply line 3 is tube 3b which connects to the mixing means 10 and includes a second adjustable restrictor valve 14 and non return valve 15 at the ends.
  • the non return valve 15 prevents the flow of chemical into the air supply line 3a and the pump 2.
  • the restrictor valve 14 controls the decree of aeration of the chemical liquid.
  • the runaway protector 6 ensures an even supply of air to the pump 2 for even pu ⁇ p stroke and avoidance of pump head overrunning.
  • the mixing means 10 in Fig. 2 is close to the container 1, and foam line 4b extends to the discharge outlet 4c and carries foam formed in the mixing means 10.
  • the container is shown as a pressure vessel 16 connected to an air supply line 17 via an air inlet 17a fitted with a three way air valve 18.
  • the air valve 18 can be vented to atmosphere via tube 19 to depressurize the vessel 16 when the air supply is switched off.
  • the pressure vessel 16 is further provided with a quick release drop-in top 20 to enable filling.
  • a non return valve 21 and restrictor valve 22 are also placed in the air supply line to prevent respectively the back flow of chemical from the pressure vessel 16 and also to control the amount of air mixing with the chemical in the liquid line at the mixing means (T-junction) 24 with the foam passing to the foam line 25.
  • the pressure in the vessel 16 forces the liquid therein out through the liquid line 23 into the T-junction 24 which mixes with air into a foam which passes to atmosphere through the foam line 25.
  • a number of further valves being a non return valve 25 and restrictor valve 27 in the liquid line 23 operate in the same fashion as the valves 21, 22 in the air line 17b.
  • on/off or control valves 28 and 29 are provided in the foam line 25 to enable operation of the device in a convenient and functional manner, the control valve 29 being near the discharge outlet 25a.
  • the benefit from the combination of the features disclosed in the various preferred embodiments is to provide a cleaning device and system which is functional over the prior art and utilizes cleaning liquid in a controlled way so that the amount of cleaning liquid is substantially less than that required using prior art systems whilst achieving the same cleaning effect.
  • a "dry" foam having a closely controlled_ amount of liquid relative to the amount of air enables the foam to cling to sloping or vertical surfaces for example v/hereas prior "wet” foams quickly run off with waste of liquid and ineffective cleaning.
  • the pressure vessel 16 supplies liquid line 23 which can be quite long, e.g. up to 50 metres or more.
  • a similarly long air supply line 17b is provided.
  • the mixing means 10 is located near the discharge outlet 25a so that aeration occurs at or close to the discharge outlet 25a.
  • the mixiny means comprises a mixing valve 30 having an inlet 31 connected via non return valve 21 to the pressurised air line 17b and an inlet 32 connected via non return valve 26 to the liquid supply line.
  • the mixing valve 30 is selectively operable to enable flow of air and cleaning liquid into a mixing zone provided in the mixing valve 30, the aerated cleaning liquid created in the mixing zone in use passing through an outlet 33 to the control valve 29 and thence to the discharge outlet 25a.
  • the pressurised air supplied to the pressure vessel 16 through the pressurised air inlet 17a may be at a pressure between 10 and 140 psi, preferably less than 60 psi (about 410 kpa) and most preferably about 20 psi, the pressurised air line 17b receiving pressurised air at substantially greater pressure than the pressure vessel 16.

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  • Nozzles (AREA)

Abstract

Système de nettoyage distribuant un liquide de nettoyage gazéifié, composé d'un réservoir (1) de liquide de nettoyage sous forme gazéifiée, un dispositif permettant de mettre sous pression le liquide de nettoyage utilisé, un tuyau d'alimentation en liquide (4a) destiné à amener le liquide de nettoyage sous pression depuis le réservoir (1), un tuyau à air sous pression (3b) destiné à recevoir de l'air sous pression, un dispositif mélangeur (10) destiné à recevoir l'air sous pression provenant du tuyau d'air (3b) et à recevoir également du liquide sous pression provenant du tuyau d'alimentation en liquide (4a), dispositif disposé de manière que le mélange d'air sous pression et de liquide de nettoyage sous pression qui s'y trouve constitue une forme gazéifiée du liquide de nettoyage, un orifice d'évacuation (4c) en aval du dispositif mélangeur (10), orifice par lequel le liquide de nettoyage est, lors de son utilisation, évacué sous une forme gazéifiée, enfin une soupape de commande sélective (12) placée à l'orifice d'évacuation (4c) ou très près de celui-ci, la soupape de commande (12) pouvant être actionnée par l'utilisateur pour permettre ou arrêter à volonté l'évacuation du liquide de nettoyage gazéifié par l'orifice d'évacuation (4c).
PCT/AU1988/000097 1987-04-06 1988-04-06 Systeme de nettoyage WO1988007895A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890702122A KR900700715A (ko) 1988-03-11 1988-03-10 문 작동기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU127287 1987-04-06
AUPI1272 1987-04-06

Publications (1)

Publication Number Publication Date
WO1988007895A1 true WO1988007895A1 (fr) 1988-10-20

Family

ID=3691852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1988/000097 WO1988007895A1 (fr) 1987-04-06 1988-04-06 Systeme de nettoyage

Country Status (1)

Country Link
WO (1) WO1988007895A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533983A1 (fr) * 1991-09-23 1993-03-31 Toto Ltd. Dispositif pour distribution du savon liquide
US5356051A (en) * 1991-09-23 1994-10-18 Toto, Ltd. Liquid soap supplying device
US5540362A (en) * 1991-09-23 1996-07-30 Toto, Ltd. Liquid soap supplying device
US5611487A (en) * 1995-01-27 1997-03-18 Hood; John A. Boat trailer fresh water wash down apparatus
WO1998045058A1 (fr) * 1997-04-08 1998-10-15 Cabanelas Hector Manuel Machine pneumatique a produire et a distribuer de la mousse detergente
WO1998057762A1 (fr) * 1997-06-17 1998-12-23 Peter David Young Procede de lavage
GB2416159A (en) * 2004-07-14 2006-01-18 Gotohti Com Inc Sink side touchless foam dispenser
WO2021253005A1 (fr) * 2020-06-12 2021-12-16 Oak Mountain Solutions, LLC Systèmes et procédés d'aseptisation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780943A (en) * 1972-08-14 1973-12-25 D Lilja Spray apparatus and method
US3801015A (en) * 1972-10-27 1974-04-02 Stoltz J Foam generator
US3829024A (en) * 1972-09-08 1974-08-13 Euroclean Ab Washing and high pressure jet cleaning apparatus
EP0062010A1 (fr) * 1981-03-31 1982-10-06 B & B ENGINEERING S.r.l. Dispositif pour mélanger et livrer des liquides en forme de mousse compacte
DE3216577A1 (de) * 1982-05-04 1983-11-17 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
US4424823A (en) * 1982-06-28 1984-01-10 Harry Gougoulas Tire spray cleaning system
US4468839A (en) * 1980-05-27 1984-09-04 Ibp, Inc. Method for washing animal carcasses
EP0140505A1 (fr) * 1983-08-15 1985-05-08 Generale de Mecanique et Thermique Procédé de nettoyage d'éléments industriels et système de jet pour la mise en oeuvre de ce procédé
EP0204673A2 (fr) * 1985-05-03 1986-12-10 Aktiebolaget Electrolux Dispositif dans un système de lavage à haute pression

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780943A (en) * 1972-08-14 1973-12-25 D Lilja Spray apparatus and method
US3829024A (en) * 1972-09-08 1974-08-13 Euroclean Ab Washing and high pressure jet cleaning apparatus
US3801015A (en) * 1972-10-27 1974-04-02 Stoltz J Foam generator
US4468839A (en) * 1980-05-27 1984-09-04 Ibp, Inc. Method for washing animal carcasses
EP0062010A1 (fr) * 1981-03-31 1982-10-06 B & B ENGINEERING S.r.l. Dispositif pour mélanger et livrer des liquides en forme de mousse compacte
DE3216577A1 (de) * 1982-05-04 1983-11-17 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
US4424823A (en) * 1982-06-28 1984-01-10 Harry Gougoulas Tire spray cleaning system
EP0140505A1 (fr) * 1983-08-15 1985-05-08 Generale de Mecanique et Thermique Procédé de nettoyage d'éléments industriels et système de jet pour la mise en oeuvre de ce procédé
EP0204673A2 (fr) * 1985-05-03 1986-12-10 Aktiebolaget Electrolux Dispositif dans un système de lavage à haute pression

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533983A1 (fr) * 1991-09-23 1993-03-31 Toto Ltd. Dispositif pour distribution du savon liquide
US5356051A (en) * 1991-09-23 1994-10-18 Toto, Ltd. Liquid soap supplying device
US5392965A (en) * 1991-09-23 1995-02-28 Toto, Ltd. Liquid soap supplying device having a middle height supplementing port
US5423461A (en) * 1991-09-23 1995-06-13 Toto, Ltd. Liquid soap supplying device
US5540362A (en) * 1991-09-23 1996-07-30 Toto, Ltd. Liquid soap supplying device
US5611487A (en) * 1995-01-27 1997-03-18 Hood; John A. Boat trailer fresh water wash down apparatus
WO1998045058A1 (fr) * 1997-04-08 1998-10-15 Cabanelas Hector Manuel Machine pneumatique a produire et a distribuer de la mousse detergente
US6138926A (en) * 1997-04-08 2000-10-31 Russo; Marsio Juan Detersive foam producer and expeller pneumatic machine
AU736952B2 (en) * 1997-04-08 2001-08-09 Marsio Juan Russo Detersive foam producer and expeller pneumatic machine
WO1998057762A1 (fr) * 1997-06-17 1998-12-23 Peter David Young Procede de lavage
GB2416159A (en) * 2004-07-14 2006-01-18 Gotohti Com Inc Sink side touchless foam dispenser
US7364053B2 (en) 2004-07-14 2008-04-29 Hygiene-Technik Inc. Sink side touchless foam dispenser
US7455197B2 (en) 2004-07-14 2008-11-25 Gotohti.Com Inc. Sink side touchless foam dispenser nozzle assembly
WO2021253005A1 (fr) * 2020-06-12 2021-12-16 Oak Mountain Solutions, LLC Systèmes et procédés d'aseptisation

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