A foam generating apparatus is disclosed which generates foam from a foamable liquid by pumping the liquid by means of a high pressure pump from a storage tank to a combining device in which the liquid is combined with compressed air. The apparatus is capable of both operation and storage under extremely cold ambient conditions without the components of the apparatus becoming frozen. When the apparatus is not generating the product foam, a foamable liquid is recirculated throughout the apparatus...

Apparatus for generating foam for use in fire fighting having two plates housed in a chamber which respectively introduce pressurized air and water/soap solution into the space between the two plates where foam is generated and emitted from an aperture on the side of the chamber. Pressurized water/soap solution is introduced through an orifice into a small opening through one plate. Pressurized air is introduced into the other plate through a number of channels bored through the plate to an annu...

The airtight foamable liquid reservoir of a portable foam generator includes a pressurized air inlet and a discharge tube with one or more venturi openings. As a foamable liquid within the reservoir is discharged from the reservoir by the pressurized air through the discharge tube, pressurized air enters the discharge tube through the venturi opening(s) to create a fluid foam from the foamable liquid. For pest control, the foam generator may be utilized to foam and dispense a foamable pesticide ...

A device for generating foam by the Venturi effect mixes liquid and gaseous phases. The device has a liquid insertion nozzle on the same axis as a Venturi stage having a converging portion disposed facing the nozzle, a throat of diameter "D", and a gas inlet coaxial with the nozzle and in communication with the converging portion. In operation, the gas is sucked in by the Venturi effect and directed towards a mixing chamber connected to a foam outlet. Mixing between the two phases takes place in...

A fluid mixing apparatus is provided in which pressure plates and collection plates are stacked alternately, with cavities between, the pressure plates each having an annular band of fine flow holes while the collection plates each have one or a small number of comparatively large flow-holes eccentrically disposed in relation to the center of the plate. The cavities between the plates can be provided by depressions formed in both faces of each collection plate. The pressure plates can each advan...

Methods and apparatus for producing high quality closed cell foams for use in applications such as coatings, sealant beads, seam filling and gaskets. An in-line single pass static mixing device containing a very large number of individual mixing elements is used to homogeneously disperse a gas throughout a highly viscous liquid polymeric material such as a plastisol, silicone, butyl or urethane based material.

A nozzle for continuously generating a foam is used for the purpose of bathing, cleaning, fire extinguishing, sterilizing or the like. The nozzle includes as essential components a chemical agent liquid mixture preparing unit, a cylindrical holder to be held in by a user's hand, an injection nozzle attached to the foremost end of the holder for ejecting a chemical agent liquid mixture as a spray, a cylindrical sleeve secured to the holder with a diameter larger than that of the holder, air intak...

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...

A styling mousse generator adapted to foam a liquid and deliver foamed styling mousse for use in hair treatment and the like having a liquid reservoir in its lower portion, means for filling the reservoir, a fan and motor above the reservoir, a fan inlet and a fan outlet, a foam delivery tube leading from the reservoir to the fan inlet, a liquid inlet duct (coming from the reservoir) and an air inlet duct (coming from a location higher than the reservoir liquid level) at an acute angle to each o...

The invention relates to a method and a device for foaming glue for the production of wood-based sheets. Gluing substance and gas are fed (1,2) into the foaming device through nozzles (3,4), which are directed to mix the gluing substance and gas to be fed to form an essentially homogenous mixture prior to foaming. After this the gluing substance is foamed mechanically in the foaming chamber (5) with the aid of gas.