Apparatus for generating foam

Details Apparatus for generating foam Apparatus for generating foam

A - Human Necessities

62

C

A62C 5/02 (2006.01) B01F 3/02 (2006.01) B01F 3/04 (2006.01) B01F 5/04 (2006.01) B01F 13/10 (2006.01)

Patent

CA 2145689

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.

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