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WO1998035759A1 - Dispositif pour ajouter par melange des additifs et procede mis en oeuvre a l'aide dudit dispositif a des fins de nettoyage et/ou de desinfection - Google Patents

Dispositif pour ajouter par melange des additifs et procede mis en oeuvre a l'aide dudit dispositif a des fins de nettoyage et/ou de desinfection Download PDF

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Publication number
WO1998035759A1
WO1998035759A1 PCT/EP1998/000658 EP9800658W WO9835759A1 WO 1998035759 A1 WO1998035759 A1 WO 1998035759A1 EP 9800658 W EP9800658 W EP 9800658W WO 9835759 A1 WO9835759 A1 WO 9835759A1
Authority
WO
WIPO (PCT)
Prior art keywords
additive
injector
cleaning
additives
flow
Prior art date
Application number
PCT/EP1998/000658
Other languages
German (de)
English (en)
Inventor
Werner Lüdecke
Thomas Tyborski
Dimitri Ouzounis
Heinz Goerke
Original Assignee
Henkel-Ecolab Gmbh & Co. Ohg
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 Henkel-Ecolab Gmbh & Co. Ohg filed Critical Henkel-Ecolab Gmbh & Co. Ohg
Publication of WO1998035759A1 publication Critical patent/WO1998035759A1/fr

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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
    • B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid

Definitions

  • the device relates to a device for metering admixture of an additive via a feed line to a solvent flowing in a main line, in particular water, with an injector arranged in the main line, the suction opening of which is connected to the feed line, and with a flow control valve arranged in the feed line.
  • Typical devices used in this area have an injector with only one suction opening, through which only a single cleaning agent or disinfectant is added to the water flowing in the main line.
  • injectors known per se for metering chemicals, the chemical is sucked in according to the Venturi principle by the negative pressure which arises at the point of the injector when the water flows.
  • a flow control valve in the concentrate suction line which is also called the feed line here, the application concentration of the product used can be freely selected.
  • a separate metering in of concentrates is particularly essential if premixing of the product concentrates and metering via only one suction opening of the injector is not possible.
  • the combination of an alkaline cleaning agent and a cleaning booster or disinfectant based on hydrogen peroxide may be mentioned as an example. Both components react violently with each other in concentrated form, releasing free oxygen, the cleaning or disinfecting effect of which, however, is only to be developed on the soiled surface. However, the concentrations of both components in the ready-to-use solution are so low that the undesired premature decomposition of the peroxide is largely avoided.
  • the high-pressure cleaning device known from DE 33 10 663 C2 shows a high-pressure line for water that is divided into two branch lines.
  • An injector is provided in each branch line, which can be used to draw in a liquid chemical on the one hand and an air-powder mixture on the other hand.
  • the amount of powder sucked in can be adjusted via a continuously adjustable conveying device for the powder.
  • the concentrations of the additives in the working solution fluctuate to an extent that is no longer acceptable for many applications, as the inventors have have found.
  • the cause is suspected in flow turbulence in the main line, so that there is no constant time division into two partial flows.
  • the invention is therefore based on the object of metering in at least two liquid additives into the main line in a freely selectable, mutually independent and practice-oriented concentration setting using a device of the type mentioned.
  • a desired change in the concentration of one additive should not influence the concentration of the other additive.
  • the constancy over time of the once set concentration ratio of the additives is required, irrespective of temporal fluctuations in the pressure of the main line.
  • additives should also be metered in, in which the mixture in a concentrated form is not desired.
  • the injector has at least two suction openings which are at the same height in the direction of the flow of the solvent, and that the second suction opening is connected to a second feed line for a second additive.
  • the device according to the invention is preferably designed for a liquid solvent and for liquid additives.
  • the common entry point for the additives in the main line leads to several technical advantages.
  • pressure fluctuations in the main line have the same effect on all injectors, so that the ratio of the flow rates of the additives and thus the ratio of the concentrations in the working solution are largely independent of the water pressure.
  • a change in the setting of one flow control valve also has no effect on the metering rate of the other additives, since their suction openings are exposed to the full, unchanged pressure in the main line.
  • the injector preferably has intake ports which are oriented at an angle of 90 ° to the direction of flow of the solvent. For structural and spatial reasons, it is advantageous if the injector has intake manifolds which form an angle of 90 to 180 ° with one another.
  • the flow rates for all additives and thus the concentrations in the ready-to-use solution should preferably be adjustable separately. It is therefore proposed that a flow control valve, for. B. a needle valve is provided.
  • the device according to the invention is used to produce cleaning or disinfecting foam.
  • an air supply line which is connected to the main line and is arranged downstream of the injector in the flow direction, is provided for producing foam in a further preferred embodiment.
  • the invention also relates to a method for cleaning and / or disinfecting, in particular of solid surfaces, with a device according to the invention already mentioned, which is connected to a pressurized water pipe.
  • This water pipe can be the water pipe network or a water reservoir with a booster pump.
  • the inventors propose that at least two additives which chemically react with one another in the undiluted state are added to the water flowing in the main line, one of which is a cleaning agent and the other of which is a cleaning booster and / or a disinfectant.
  • the one additive is an alkaline detergent and the other additive contains peroxide.
  • Hydrogen peroxide and peracetic acid may be mentioned as examples of such peroxides which give off free oxygen in contact with alkalis.
  • additives in a concentrated form are not miscible with each other, but which lead to a significantly improved cleaning and disinfection effect, the following are mentioned:
  • the method according to the invention can be operated with a water pressure of less than 25 bar in the main line, ie with "low pressure", or with a water pressure of at least 25 bar in the main line, ie with "high pressure”.
  • Foam cleaning is preferably carried out in the low pressure range.
  • the low aerosol formation the greater occupational safety for the cleaning staff and the better protection of the surfaces, machines and systems are examples.
  • High-pressure cleaning can only be used if the surfaces, machines and systems withstand this high mechanical stress.
  • FIG. 1 shows a flow diagram of an exemplary embodiment according to the invention
  • FIG. 1 a shows a detail from FIG. 1,
  • FIG. 2 shows the change in concentration over time with different settings of the device according to FIG. 1 in a diagram
  • FIG. 3 shows a diagram corresponding to FIG. 2, which shows the results of a second experiment
  • FIG. 4 shows an illustration according to FIG. 2 with respect to a third experiment with the device according to FIG. 1,
  • Figure 5 is a flow chart corresponding to Figure 1 for a device according to the
  • FIG. 6 shows a flow diagram corresponding to FIG. 5, which shows the arrangement with respect to a first comparative example
  • FIG. 7 shows a representation according to FIG. 6 with respect to a second comparative example
  • Figure 8 is an illustration of Figure 6 with respect to a third comparative example.
  • a main line 1 namely a pressure pipe, is connected to the water supply network.
  • the flow can be adjusted with a control valve 2.
  • the additives A, B are added via the intake ports 4, 5 and the supply lines 6, 7 connected to them sucked out of their storage containers, not shown.
  • additive A can be an alkaline cleaning agent concentrate and additive B can be concentrated hydrogen peroxide.
  • the flow control valves 8, 9 built into the flow lines 6 and 7 allow the concentrations of the additives A, B in the application solution to be set separately.
  • the intake manifold 6, 7 lie opposite each other in this embodiment, so that they form an angle of 180 ° with one another.
  • an entry point 11 for compressed air is provided downstream behind the injector 3.
  • the amount of compressed air can be adjusted via a further control valve 12, and the pressure in this branch line is displayed by a measuring device 13.
  • the foam emerging from a nozzle (not shown) at the end of the main line is used for cleaning and disinfecting solid surfaces and large containers.
  • the setting of the needle valves 8, 9 is given, the first number indicating the number of revolutions and the second number indicating the setting on an arbitrary scale that is the same for both valves.
  • the third and sixth columns list the flow rates in the feed lines 6, 7, which were measured in ml / min.
  • the resulting concentrations of components A and B can be found in the fourth and seventh columns. They were calculated as% by volume from the flow rates in the feed lines 6, 7 and the flow rate in the main line 1.
  • Tables 1 to 3 are shown graphically in FIGS. 2 to 4, the concentration in vol.% For both additives A and B being plotted against the test number.
  • Table 1 and Figure 2 show that the desired concentrations can be set within a wide range without problems.
  • FIG. 5 shows a flow diagram of the prior art already mentioned above. Only a single additive A can be metered in here, as can be seen from the comparison of FIG. 5 and FIG. 1.
  • FIGS. 6 to 8 show flow diagrams of arrangements with which comparative tests were carried out.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un dispositif permettant d'ajouter par mélange dosé un additif (A) par l'intermédiaire d'une conduite (6) à un solvant s'écoulant dans une conduite principale (1). Ce dispositif comprend un injecteur (3) monté dans la conduite principale (1), dont l'orifice d'aspiration (4) est relié à la conduite d'alimentation (6), ainsi qu'une soupape de régulation d'écoulement (8) montée dans la conduite d'alimentation (6). L'injecteur (3) comporte au moins deux orifices d'aspiration (4, 5) situés à la même hauteur dans le sens d'écoulement (10) du solvant. Le second orifice d'aspiration (5) est relié à une seconde conduite d'alimentation (7) prévue pour un second additif (B). Les concentrations des additifs peuvent être ajustées indépendamment les unes des autres dans une large plage.
PCT/EP1998/000658 1997-02-15 1998-02-06 Dispositif pour ajouter par melange des additifs et procede mis en oeuvre a l'aide dudit dispositif a des fins de nettoyage et/ou de desinfection WO1998035759A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19705861A DE19705861A1 (de) 1997-02-15 1997-02-15 Einrichtung zum Zumischen von Additiven und damit durchgeführtes Verfahren zum Reinigen und/oder Desinfizieren
DE19705861.2 1997-02-15

Publications (1)

Publication Number Publication Date
WO1998035759A1 true WO1998035759A1 (fr) 1998-08-20

Family

ID=7820371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000658 WO1998035759A1 (fr) 1997-02-15 1998-02-06 Dispositif pour ajouter par melange des additifs et procede mis en oeuvre a l'aide dudit dispositif a des fins de nettoyage et/ou de desinfection

Country Status (2)

Country Link
DE (1) DE19705861A1 (fr)
WO (1) WO1998035759A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20080043A1 (it) * 2008-09-04 2010-03-04 Allegrini S P A Sistema e metodo per ottenere diversi detergenti da piu' componenti concentrati.
CN119005920A (zh) * 2024-10-25 2024-11-22 正帆科技(湖州)有限公司 一种适用于新材料行业的湿化学品在线定量混配系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033339A1 (de) * 2000-07-08 2002-01-24 Henkel Ecolab Gmbh & Co Ohg Verfahren und Anlage zum Reinigen und/oder Desinfizieren von harten Oberflächen mit einem Schaum
DE10247161C5 (de) * 2002-10-09 2012-09-20 Alto Deutschland Gmbh Einschritt-Reinigungsverfahren von Oberflächen mit einem Hochdruckreinigungsmittel
DE10342000A1 (de) * 2003-09-08 2005-04-07 Alfred Kärcher Gmbh & Co. Kg Verfahren zum Erzeugen eines Reinigungsmittelschaumes sowie Schaumerzeugungssystem zur Durchführung des Verfahrens
DE102008014281B4 (de) 2008-03-06 2009-12-24 Alfred Kärcher Gmbh & Co. Kg Verfahren, Mischsystem und Vorrichtung zum Erzeugen eines desinfizierenden Schaumes
GB2552321A (en) * 2016-07-18 2018-01-24 Edwards Ltd Inlet assembly and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR557993A (fr) * 1922-02-13 1923-08-20 Outil Mec Usinage Artillerie Procédé et dispositifs pour la formation et la projection de mousses extinctrices
US3850371A (en) * 1974-03-25 1974-11-26 J Trapp Hand held spray gun
US4103827A (en) * 1976-05-27 1978-08-01 Mitsubishi Precision Co., Ltd. Method of and apparatus for generating mixed and atomized fluids
US4397422A (en) * 1981-06-04 1983-08-09 Gwyn Marion V Full spectrum selective color producing and spraying device
US4753390A (en) * 1987-01-27 1988-06-28 Henderson And Sons, Inc. Controlled liquid atomizer
US4802630A (en) * 1985-11-19 1989-02-07 Ecolab Inc. Aspirating foamer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR557993A (fr) * 1922-02-13 1923-08-20 Outil Mec Usinage Artillerie Procédé et dispositifs pour la formation et la projection de mousses extinctrices
US3850371A (en) * 1974-03-25 1974-11-26 J Trapp Hand held spray gun
US4103827A (en) * 1976-05-27 1978-08-01 Mitsubishi Precision Co., Ltd. Method of and apparatus for generating mixed and atomized fluids
US4397422A (en) * 1981-06-04 1983-08-09 Gwyn Marion V Full spectrum selective color producing and spraying device
US4802630A (en) * 1985-11-19 1989-02-07 Ecolab Inc. Aspirating foamer
US4753390A (en) * 1987-01-27 1988-06-28 Henderson And Sons, Inc. Controlled liquid atomizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20080043A1 (it) * 2008-09-04 2010-03-04 Allegrini S P A Sistema e metodo per ottenere diversi detergenti da piu' componenti concentrati.
CN119005920A (zh) * 2024-10-25 2024-11-22 正帆科技(湖州)有限公司 一种适用于新材料行业的湿化学品在线定量混配系统

Also Published As

Publication number Publication date
DE19705861A1 (de) 1998-08-20

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