Apparatus for generating foam

Details Apparatus for generating foam Apparatus for generating foam

1995-03-28

1996-12-10

Miles, Tim R.

Gas and liquid contact apparatus

Multiple diverse liquids

169 15, 261DIG26, B01F 304

Patent

active

055827764

ABSTRACT:
An apparatus for generating foam includes a power source such as an internal combustion engine mounted in a frame for portable transportation of the apparatus. The power source drives an air compressor through an electric clutch which can disconnect the air compressor and a water pump. The water pump generates flow of the water under pressure through a duct system either to a water discharge valve or to a foam discharge valve. The foam is generated by injecting into the water stream a surfactant which is injected by reciprocating valve arrangement operated by flow of the water. The flow is controlled by a maximum flow orifice, a minimum flow orifice and an adjustable valve. The air compressor supplies a surge tank and the air is passed from the surge tank through a pressure regulator to a mixing device where the water and surfactant is mixed with the air to generate the foam. The mixing chamber comprises a vertical tube with a central shaft carrying a plurality of conical shaped baffles in spiral arrangement around the shaft.

REFERENCES:
patent: 2164153 (1939-06-01), Friedrich
patent: 2201040 (1940-05-01), Hansen-Ellehammer
patent: 2934149 (1960-04-01), Bedford et al.
patent: 2990380 (1961-06-01), Auerbach et al.
patent: 4027993 (1977-06-01), Wolff
patent: 4366081 (1982-12-01), Hull
patent: 4474680 (1984-10-01), Kroll
patent: 4729434 (1988-03-01), Rohrbach
patent: 5255747 (1993-10-01), Teske et al.
patent: 5427181 (1995-06-01), Laskaris et al.
patent: 5480597 (1996-01-01), Ishida et al.

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