This degassing pump, with an interlocked vacuum pump, extracts and discharges even dissolved gas in liquid with extremely high efficiency
Yokota Manufacturing has launched a new type of degassing equipment, the ASP series, for highly efficient and quick degassing of gas-dissolved liquid.
The main part of this equipment is a degassing pump with novel structure patented in USA, UK, Japan, and elsewhere.
This degassing pump, with an interlocked vacuum pump, extracts and discharges even dissolved gas in liquid with extremely high efficiency.
Its patented mechanism comprising an orifice and multiple types of impellers generates strong decompression and centrifugal force to continuously extract and separate the dissolved gas from the liquid.
The separated gas is then drawn out by the vacuum pump. The outstanding degassing power is evident by the remarkable reduction of dissolved oxygen in water, for example, from a near 8ppm at the intake side to 0.5ppm or less at the outlet side. This equipment degasses liquid mechanically without using any chemical additive such as hydrazine.
Therefore it is safe, does not cause contamination, and greatly reduces maintenance costs, says Yokota.
Models are available with bores from 25 to 40mm, flow capacity from 0.01 to 0.06ton/min and total head from 5 to 25m.
Models that meet sanitary specifications are also available. This degassing equipment is capable of performing a wide range of tasks in industrial and laboratory applications including supply of deoxidised water to prevent water pipes or boilers from rustin, de-aeration of foods and beverages, production of ultra-pure water, degassing of gas-containing chemical liquid, degassing of liquid products before packaging to prevent overflow, de-aeration of lubricants and hydraulic oil, de-aeration of cleaning liquid to improve cleaning efficiency, and others.
Outstanding performance is also demonstrated in applications such as defoaming of various foaming liquids.
By using this equipment, efficient defoaming can be achieved in continuous processing, and time required to eliminate bubbles is shortened, making it unnecessary to install a large tank for stabilisation of liquid.
Also, the stirring operation of the built-in impeller simultaneously provides favorable results such as liquid homogenization and reduced particle size.
There are, says Yokota, no clogging problems like that with membrane type equipment, and no troublesome maintenance is required.
Moreover, with the self-priming and pressurised discharge capabilities, all processes including suction, stirring, defoaming and transfer of liquid are achieved in this single, compact equipment, unlike conventional methods which require installation of several components.
