(1)
Concept
The foam machine is the
actual air-entraining machine, it is the nature of the air, the foam in aqueous
solution, and its core technology is what is the best way to enter the aqueous
solution air to introduce. Foam machine itself can not expect the output bubble, which
is dispersed in order to achieve maximum liquid, gas may come into contact
interface, so that the foaming agent surfactant in the liquid film on the
formation of air into a foaming agent solution electrical double layer surface
and air surrounded by a bubble.
Therefore, foam machine, so
the bubble. This is a foaming
agent in aqueous solution foam air mixture.
The main body of the foam concrete is a bubble, foam fire extinguishing
systems, foam machines has become a key device and host of the production of
foam concrete. Without it, there is no foam concrete.
(2)
Status
Foam machines first appeared in a foreign country, the original model is
a bubble of high-speed rotating impeller system, it is also known as
"playing the bubble machine”. Later, as technology continues to
progress, central vacuum system the
technical content of the foam machine continuously improve the emerging new
models, the formation of the different systems. Started using a foam machine in
the early 1950s, but not a special foam model, rather than using a mortar
mixer. Forthcoming, the foaming agent
is added directly to the mortar mixer or concrete mixer, foam machine, mortar
or concrete mixing bubble. Later, around the 1970s, began a
special foam machine, foam machine, high-speed impeller. Continue to technological
transformation and update later, and now has developed into the third
generation of models of high-pressure inflatable foam concrete, and can
basically meet the demand. However, compared with
developed countries, the degree of automation of our foam machine is still
relatively low foaming properties have a certain gap between the need for
further improvement. From the development trend, the gap is gradually
reduced and exit.
The bubble machine at home and abroad, regardless of grade, the number of models, but the principle of bubble division, widely used in high-speed impeller, high-pressure air, low pressure, explosion three types. Different models of the same type, but the difference and its ancillary equipment and automation control, the foam part of the structure is substantially the same.