SELF-CONTAINED DEVICE FOR GENERATING A VISCOUS FOAM

This foam-generating device is easily transportable, free from fluid or power supply constraints, and able to supply a foam such as viscous foam with a high (low liquid fraction), time-invariant (low liquid fraction). The gas is withdrawn compressed from a cylinder, and a fixed fraction of its flow...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GRANDJEAN, Agnès, LEPEYTRE, Célia, FRANCES, Fabien, VENDITTI, Pierre
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CLEANING CLEANING IN GENERAL DECONTAMINATION ARRANGEMENTS THEREFOR MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NOZZLES NUCLEAR ENGINEERING NUCLEAR PHYSICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PREVENTION OF FOULING IN GENERAL PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	This foam-generating device is easily transportable, free from fluid or power supply constraints, and able to supply a foam such as viscous foam with a high (low liquid fraction), time-invariant (low liquid fraction). The gas is withdrawn compressed from a cylinder, and a fixed fraction of its flow is used to drive a pneumatic pump which draws in the foaming liquid. The foam is formed in a mixer containing free-moving solids shortly before the ejection end of the device. The mixer has highly mobile balls in a cage of much larger dimensions; it is suitable for producing foam with a high overrun. Application: decontamination and depollution of large surfaces, buildings or indoor or outdoor structures.