Unique defoaming equipment capable of continuous suction, defoaming and
transfer of liquid containing foam and bubbles.
It is often the case that foam and bubbles are generated in the processing
of liquids such as liquid foods, beverages and chemicals, and the bubbles
cause the following difficulties:
Measurement of liquid quantity becomes inaccurate, and flow rate control
Troublesome and costly removal of overflowing bubbles.
Bubbles cause difficulty in sending liquid to the next process.
Bubbles overflow during packaging, causing deterioration in packaging efficiency.
These problems have been commonly dealt with by giving time for the bubbles
to settle down. However, this creates new problems due to the amount of
time required for bubbles to settle down, causing a loss in processing
time, and the necessity of installing a large tank for stabilization of
liquid, which increases processing costs.
The Defoaming Pump, Defoaming Equipment UPSA type can clearly solve all
The pump, with an interlocked vacuum pump, produces a stable supply of
defoamed liquid by continuously separating and discharging gas bubbles
from liquid at surprising efficiency.
This pump (defoaming equipment) defoams liquid mechanically without using
any chemical additive. Therefore it is safe, does not cause contamination,
and greatly reduces maintenance costs.
Principle of defoaming (PAT.)
When pumping liquid containing gas bubbles flows into the inducer, liquid
and gas are initially separated by rotation of the inducer. The mist-like
gas-liquid mixture accumulates in the central area of the casing.
The gas-liquid mixture is transferred through the main impeller to the
separating impeller. The remaining liquid in the mixture is further separated
and the gas is drawn out by the vacuum pump.
The liquid separated by the separating impeller returns to the intake of
the inducer by centrifugal force.
Minute gas bubbles remaining in the liquid are confined to the central
area of the casing by the pressure difference generated by the main impeller
and transferred to the separating impeller, by which defoaming efficiency
is further enhanced.
Surprising defoaming efficiency!
Overview of operation
Conditions before and after defoaming
Intake side on the left, and outlet side on the right
Results show that a high volume of gas bubbles at the intake side are completely
eliminated at the outlet side.
Defoaming Pump UPSA type
Defoaming of foods and dairy products in processes such as boiling, extraction,
mixing, and fermentation
Defoaming of milk, beverages, wine, beer, other, in processes such as boiling,
extraction, mixing, and fermentation
Defoaming of gas-containing liquid, foam latex, foam starch liquid, normal
paraffin fermenter liquid, other
Defoaming of liquid foods, beverages, pharmaceuticals, detergents, cosmetics,
paints, other, before packaging/bottling (improvement of packaging efficiency
by prevention of overflow)
Defoaming of lubricants, hydraulic oil, cutting oil, other
Defoaming processes in treatment systems for pulp, waste water, sewage,
Also highly suitable for applications such as extraction from sealed tanks
(vacuum tanks), and suction and transfer of liquid containing large amount
of gas bubbles.
Examples of Defoaming of actual liquid, can be found at here.
(Pictures are example of Defoaming by ASP type. Please contact us for more
Example applications and installations
Defoaming Equipment for chemical processing
We are holding an "Online Exhibition" where you can experience
the same kind of tour as a real exhibition on the web.
Many videos showing actual examples of operation for processing various
liquids and evaluation methods for defoaming and degassing results are
(> "Online Exhibition" page)
Continuous defoaming/degassing can be done easily and at low cost even
for food and beverage processing!
YOKOTA defoaming/degassing technology is high-profile new technology that
has been featured in news articles.
For details of the news articles, please refer to "Current Topics: Defoaming, Degassing".
Moreover, YOKOTA Defoaming Equipment enables remarkable cost reduction
in the processing of various foaming liquids.
No clogging problems like that with membrane type equipment, no troublesome
maintenance required, and the pumps easily meet sanitary specifications.
Time required to eliminate foam and bubbles has been shortened, making
it unnecessary to install a large tank for stabilization of liquid.
The stirring operation of the built-in impeller simultaneously provides
favorable results such as liquid homogenization and reduced particle size.
With the self-priming and pressurized discharge capabilities, all processes
including suction, stirring, defoaming and transfer of liquid are achieved
in this single, compact pump, unlike conventional methods which require
installation of several components.
Use of YOKOTA Defoaming Equipment greatly reduces costs of liquid processing.
Equipment suitable for defoaming relatively small amounts of liquid and
equipment for defoaming with sanitary specifications are also available.
For details, please refer to Defoaming, Degassing Pump DP, ASP types.
Selection chart & Outer dimensions
Specifications (capacity, total head) and motor output power (kW) shown
above are based on normal water at normal temperature containing no gas
bubbles. Such specifications and motor output power vary depending on viscosity,
specific gravity and contained gas amount of the actual liquid handled.
Please ask for details.
Specifications stated here may be subject to change without notice due
to product improvement.