EP2476481B1 - Dispositif et procédé de production de mousse - Google Patents

Dispositif et procédé de production de mousse Download PDF

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Publication number
EP2476481B1
EP2476481B1 EP11150846.1A EP11150846A EP2476481B1 EP 2476481 B1 EP2476481 B1 EP 2476481B1 EP 11150846 A EP11150846 A EP 11150846A EP 2476481 B1 EP2476481 B1 EP 2476481B1
Authority
EP
European Patent Office
Prior art keywords
foam
feed line
liquid
gas
disinfectant
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.)
Active
Application number
EP11150846.1A
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German (de)
English (en)
Other versions
EP2476481A1 (fr
Inventor
Jan Nevermann
Frank Von der Haar
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.)
Menno Chemie-Vertrieb GmbH
Menno-Chemie-Vertrieb GmbH
Original Assignee
Menno Chemie-Vertrieb GmbH
Menno-Chemie-Vertrieb GmbH
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Priority to EP11150846.1A priority Critical patent/EP2476481B1/fr
Publication of EP2476481A1 publication Critical patent/EP2476481A1/fr
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Publication of EP2476481B1 publication Critical patent/EP2476481B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam

Definitions

  • the present invention relates to a device for generating foam, in particular for producing a foam, which contains a cleaning agent and / or a disinfectant. Furthermore, it relates to a method for foam generation and the use of the device according to the invention for producing a foam, which contains in particular a cleaning agent and / or a disinfectant.
  • the application of cleaning agents and disinfectants is often in the form of a foam.
  • the foaming is used for better spray control to ensure the necessary exposure time on vertical surfaces, as well as to prevent spray and thus to ensure occupational safety.
  • the formation of fine spray drops affects users of detergents and disinfectants themselves. Such small drops are formed at high pressure on a spray nozzle but also by reflection of a spray solution on the treated surface or objects standing in space.
  • the large specific surface of a sprayed detergent or disinfectant solution can endanger the user by strong evaporation of cleaning agents or disinfectants.
  • a foam strikes a target area in a stress-relieved manner, is thus not reflected, and the intrinsically homogeneous nature with a specific surface that is smaller toward the outside also reduces the evaporation of cleaning agents or disinfectants. As a result, the workload is reduced.
  • Conventional foam generation devices include continuous and discontinuous foam generators. Discontinuous foam generators allow only short sprays of a foam. They are unsuitable for the treatment of large areas.
  • a continuous operation of a foaming device by direct connection to a water pipe and a compressed air source is in the DE 20 207 014 124 U1 described.
  • This device uses a proportional feeder which allows only low water pressures of not more than 200,000 Pa, resulting in low volume flows of the foam produced.
  • water and compressed air are mixed without a fine distribution of the liquid would take place. It therefore does not come to the formation of air bridges.
  • Foam without air bridges hits and occupies a surface in a manner similar to a liquid jet, so that only a small layer thickness can be applied. Such foam drains off vertical surfaces quickly, so that its exposure time, similar to that of an aqueous solution, is minimal.
  • Expiring foam transports a cleaning agent or disinfectant with, so that it collects on the ground and is transported, for example, in the application in livestock through slatted floors in the manure or discharged at the lowest point of the floor via a drain into the sewage.
  • unintentional inputs into the environment are to be assessed by means of risk assessment in authorization procedures specifically regulated by the Biocidal Products Act and minimized by suitable application techniques and application procedures.
  • the DE G 90 07 434.3 describes a foam generation system for cleaning equipment. First, a liquid and compressed air without fine distribution of the liquid mixed together before foaming the resulting mixture through a sieve. Again, there is no formation of air bridges.
  • US 3,618,713 discloses a device according to the preamble of claim 1 for the generation of foam, in particular for the production of a foam for cleaning or disinfection of production lines.
  • DE 102 33 471 A1 shows a cylindrical device for generating carbon dioxide added table water.
  • a water jet is divided by a sieve to foam water already in the cylinder and thus provide the largest possible surface for gas exchange.
  • Foam which has air bridges, has a "creamy" texture. This makes it possible, compared to foam without air bridges (according to the prior art), to attach larger layer thicknesses of a larger foam volume to be applied to a target surface and to place them there for a longer period of time. As a result, the exposure time at the site of action is increased, and the required amount of active ingredient per unit area is ensured over the required exposure time. In addition, the foam remains on the treated surface and dried there. This avoids inadvertent entry into the environment.
  • the liquid supply line and the gas supply line are separated, so that only liquid can be transported through the liquid line and only gas can be transported through the gas supply line.
  • the liquid exits through the screen as a fine spray jet and is then cyclone-like or vortex foamed by the gas flow from the gas supply line. This is preferably accomplished by use of a cylindrical foam generating chamber so that the gas stream can form a gas vortex along the wall of the foam generating chamber.
  • the foam produced according to the invention has air bridges.
  • an aqueous solution of a cleaning agent and / or a disinfectant is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber. This corresponds to the pressure of tap water in the low pressure range.
  • This aqueous solution preferably contains a foaming agent to enhance foaming. However, if the cleaning agent or the disinfectant itself has foam-forming properties, but can also be dispensed with an additional foaming agent.
  • the aqueous solution is preferably produced by continuously metering in a water stream the cleaning agent and / or the disinfectant and optionally the foaming agent. This dosing can be done, for example, the metering hygitrix ® from Menno Chemiemaschinesgesellschaft mbH.
  • the metered addition is regulated taking into account a measurement of the detergent / disinfectant concentration in the produced use solution taking place at intervals in order to avoid underdosing or overdosing.
  • the gas supply compressed air is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber.
  • the compressed air volume is 4,000 to 160,000 1 / h, in particular it is in the range of 60 to 2700 1 / min, more preferably in the range of 100 to 300 1 / min and most preferably in the range of 150 to 200 1 / min.
  • the stream of liquid introduced is preferably from 5% to 150% of the stream of introduced gas, more preferably it is in the range from 7 to 50% and most preferably from 10% to 20%. It is further preferred that the material flow of liquid introduced is a maximum of 600 1 / h. In particular, it is in the range of 5 to 40 1 / min, more preferably in the range of 10 to 30 1 / min and most preferably in the range of 15 to 25 1 / min.
  • the material flow of the liquid which is introduced through the liquid feed line (12) into the device (1), in the range of 15 to 25 1 / min.
  • the stream of gas which is introduced into the device (1) through the gas feed line (14), is preferably in the range from 150 to 2001 / min.
  • the sieve basket of the device according to the invention has a sieve-free opening and in the sieve basket is arranged at least one freely movable packing whose diameter is greater than the diameter of the screen-free opening.
  • the freely movable filler body is substantially spherical. Most preferably it consists of Teflon or is coated with Teflon.
  • the filler is pressed by the liquid flow on the screen-free opening and thus closes it. If there is a blockage of the screen basket, the filler falls back into the basket and can solve the blockage in this way, so that a self-cleaning of the screen basket is possible.
  • a shut-off valve is arranged, which is adapted to shut off the liquid supply, if there is a blockage of the screen basket.
  • the liquid supply line is arranged at an angle of 0 to 90 ° to the gas supply line.
  • the gas flow strikes the liquid spray substantially at a right angle, leaving the screen.
  • the liquid supply line and the gas supply line are arranged in parallel, wherein the gas supply line encloses the liquid supply line.
  • the gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket.
  • a baffle plate is arranged at the end of the screen basket, which faces away from the liquid supply line. As a result, a strong turbulence of the gas stream is achieved.
  • the liquid supply line is arranged at an angle of 90 to 180 ° to the gas supply line. In this case, the gas flow is substantially perpendicular to the liquid spray exiting the sieve.
  • a check valve is preferably arranged in the liquid supply line.
  • a check valve is preferably also arranged.
  • the foam discharge preferably has a conical shape, which allows a particularly favorable dissipation of the foam produced by the foam dissipation.
  • a hose with a lance can be connected to the foam discharge in order to apply the generated foam.
  • a small-pored, feinperliger, pasty, creamy cleaning / disinfecting foam is generated, which has small air bubbles, thereby having a higher water content, wherein larger proportions of efficient cleaning or effective disinfectant ingredients are attached to the target area.
  • a larger contact surface to the target surface and thus accelerated drug delivery is achieved because less air and more liquid per unit volume or thicker liquid layers are formed with small air bubbles. This enables accelerated impact processes.
  • the device according to the invention is dimensioned so that it is portable.
  • FIG. 1 schematically shows a first embodiment of a device for generating foam.
  • An apparatus (1) for producing a foam containing a detergent and / or a disinfectant comprises a foaming chamber (11) of polyvinyl chloride (PVC), a liquid feed line (12) terminating in the foam producing chamber (11) and the end thereof is designed as a screen basket (13), a gas supply line (14) which is connected to the foam-generating chamber (11), and a conical foam discharge (15) which is connected to the foam-generating chamber (11).
  • the liquid supply line (12) is arranged in parallel, ie at an angle of 0 °, to the gas supply line (14).
  • a shut-off valve (121) is arranged, which is adapted to shut off the liquid supply line (12) when there is a blockage of the screen basket (13).
  • a check valve (122) is arranged in the liquid supply line (12).
  • a check valve (141) is arranged in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) also a check valve (141) is arranged.
  • the device (1) is dimensioned so that it is portable.
  • FIG. 2 schematically shows a second embodiment of a device for generating foam.
  • This differs from the first embodiment in that the gas supply line (14) encloses the liquid feed line (12).
  • the gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket (13).
  • a circular metal plate is arranged as a baffle plate (131).
  • FIG. 3 schematically shows a third embodiment of a device for generating foam. This differs from the first embodiment in that the outlet of the liquid feed line (12) is arranged at an angle of 45 ° to the gas feed line (14).
  • FIG. 4 schematically shows an embodiment of the present invention. This differs from the first embodiment in that the liquid supply line (12) is arranged transversely, ie at an angle of 90 °, to the gas supply line (14). Furthermore, the screen basket (13) has a screen-free opening (132). In the screen basket (13) is a freely movable Teflon ball as packing (133). The diameter of the Teflon ball (133) is larger than the diameter of the screen-free aperture (132).
  • FIG. 5 shows how a device according to the invention for foam generation can be connected to supply and discharge systems.
  • An aqueous solution of a disinfectant is introduced from a liquid source (2) through the liquid supply line (12) into the device (1).
  • the liquid source (2) is a dosing system hygitrix ® of Menno Chemiemaschinesgesellschaft mbH. This is connected to a water line (21), which provides tap water in the low pressure range of 300,000 to 600,000 Pa.
  • Disinfectants and foaming agent are metered from a reservoir (22) in the form of the disinfectant concentrate VENNO ® VET 1 (Menno Chemie demosgesellschaft mbH) containing formic acid as a disinfectant, and a surfactant as a foaming agent.
  • Compressed air with a maximum pressure of 600,000 Pa is introduced from a compressed air source (3) through the gas supply line (14) in the device (1).
  • the disinfectant foam produced in the device (1) is passed through the foam discharge line (15) into an application device (4).
  • the application device (4) consists of a hose (41) which ends in a lance (42). Through this lance (42) of the disinfectant foam can be applied to the surface to be disinfected.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Claims (16)

  1. Dispositif (1) pour produire de la mousse, notamment pour produire une mousse contenant un détergent et/ou un désinfectant, comprenant
    un compartiment de production de mousse (11),
    un conduit d'alimentation en liquide (12) qui se termine dans le compartiment de production de mousse (11) et dont l'extrémité est réalisée en tant que panier de tamisage (13),
    un conduit d'alimentation en gaz (14) qui est relié au compartiment de production de mousse (11) et
    un conduit d'évacuation de mousse (15) qui est relié au compartiment de production de mousse (11),
    caractérisé en ce que le panier de tamisage (13) comporte une percée (132) exempte de tamis et en ce que dans le panier de tamisage est disposé au moins un corps de remplissage (133) librement mobile, dont le diamètre est supérieur au diamètre de la percée (132) exempte de tamis.
  2. Dispositif selon la revendication 1, caractérisé en ce que le corps de remplissage (133) librement mobile est sensiblement de forme sphérique.
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que dans le conduit d'alimentation en liquide (12) est disposée une soupape d'arrêt (121) qui est installée pour fermer le conduit d'alimentation en liquide (12) en présence d'un colmatage du panier de tamisage (13).
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit d'alimentation en liquide (12) est disposé sous un angle de 0 à 90° par rapport au conduit d'alimentation en gaz (14).
  5. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le conduit d'alimentation en liquide (12) est disposé sous un angle de 90 à 180 ° par rapport au conduit d'alimentation en gaz (14).
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit d'évacuation de mousse (15) présente une forme conique.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (1) est dimensionné de sorte à être portable.
  8. Procédé destiné à produire de la mousse, notamment à produire une mousse qui contient un détergent et/ou un désinfectant, comprenant les étapes suivantes :
    - introduction d'un liquide via un conduit d'alimentation en liquide (12) dans un dispositif (1) selon l'une quelconque des revendications 1 à 7,
    - introduction d'un gaz via un conduit d'alimentation en gaz (14) dans le dispositif (1) selon l'une quelconque des revendications 1 à 7,
    - production d'une mousse par la rencontre du liquide et du gaz et
    - évacuation de la mousse via un conduit d'évacuation de mousse (15) hors du dispositif (1) selon l'une quelconque des revendications 1 à 7.
  9. Procédé selon la revendication 8, caractérisé en ce que via le conduit d'alimentation en liquide (12), on introduit une solution aqueuse d'un détergent et/ou d'un désinfectant sous une pression de l'ordre de 150.000 à 600.000 Pa dans un compartiment de mélange (11).
  10. Procédé selon la revendication 9, caractérisé en ce que la solution aqueuse contient un agent moussant.
  11. Procédé selon la revendication 9 ou la revendication 10, caractérisé en ce qu'on produit la solution aqueuse en rajoutant par dosage à un flux d'eau un détergent et/ou un désinfectant, ainsi que le cas échéant un agent moussant.
  12. Procédé selon l'une quelconque des revendications 8 à 11, caractérisé en ce que via le conduit d'alimentation en gaz (14), on introduit dans un compartiment de mélange (11) de l'air comprimé sous une pression de l'ordre de 150.000 à 600.000 Pa.
  13. Procédé selon l'une quelconque des revendications 8 à 12, caractérisé en ce que le flux de la matière liquide que l'on introduit via le conduit d'alimentation en liquide (12) dans le dispositif (1) correspond à de 5 à 150 % du flux de la matière gaz que l'on introduit via le conduit d'alimentation en gaz (14) dans le dispositif (1).
  14. Procédé selon l'une quelconque des revendications 8 à 12, caractérisé en ce que le flux de la matière liquide que l'on introduit via le conduit d'alimentation en liquide (12) dans le dispositif 1 est de l'ordre de 15 à 25 1/mn.
  15. Procédé selon l'une quelconque des revendications 8 à 12, caractérisé en ce que le flux de la matière gaz que l'on introduit via le conduit d'alimentation en gaz (14) dans le dispositif (1) est de l'ordre de 150 à 200 1/mn.
  16. Utilisation d'un dispositif (1) selon l'une quelconque des revendications 1 à 7 pour la production d'une mousse qui notamment contient un détergent et/ou un désinfectant.
EP11150846.1A 2011-01-13 2011-01-13 Dispositif et procédé de production de mousse Active EP2476481B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11150846.1A EP2476481B1 (fr) 2011-01-13 2011-01-13 Dispositif et procédé de production de mousse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11150846.1A EP2476481B1 (fr) 2011-01-13 2011-01-13 Dispositif et procédé de production de mousse

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EP2476481A1 EP2476481A1 (fr) 2012-07-18
EP2476481B1 true EP2476481B1 (fr) 2013-08-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3238833A1 (fr) 2016-04-29 2017-11-01 Menno Chemie-Vertrieb GmbH Dispositif de pulverisation pour un robot et robot de pulverisation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3075569B1 (fr) 2017-12-22 2020-03-06 Theseo Composition desinfectante
EP3800239A1 (fr) 2019-10-01 2021-04-07 Menno Chemie-Vertrieb GmbH Compositions de détergent acides liquides pour surfaces dures

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618713A (en) * 1969-12-12 1971-11-09 Robert L Batchelor Foam lubricating system and method
DE9007434U1 (de) 1990-03-21 1991-09-19 Alfred Kärcher GmbH & Co, 7057 Winnenden Schaumerzeugungssystem für Reinigungsanlagen
DE19933200C2 (de) 1999-07-15 2003-04-10 Schneider Druckluft Gmbh Druckluftbetriebenes Reinigungsgerät
DE10233471B4 (de) * 2002-07-24 2007-02-08 Kundo Systemtechnik Gmbh Verfahren und Vorrichtung zum Herstellen von mit Kohlendioxid versetztem Tafelwasser
DE202007014124U1 (de) 2007-06-29 2008-08-14 Lorenzen, Andreas Vorrichtung zur Schaumerzeugung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3238833A1 (fr) 2016-04-29 2017-11-01 Menno Chemie-Vertrieb GmbH Dispositif de pulverisation pour un robot et robot de pulverisation

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