中文
Ginhong Vacuum Mixer Co Ltd
China, Manufacturer, Hits: 1905, Updated:3/21/2014
Wang hua
106 Jinhu Road, Jinhu, Jiangsu | 211600
Company Profile
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Rotor-stator dispersers usually called vacuum mixers, are the most common form of dispersing mixer. By placing a form of closely-fitting shroud around a high speed impeller, it is possible to create a shearing action between the blades and stator shroud. As material is centrifugally pumped through the mixing head, some of it will see this high shear zone and experience shear stressing that results in dispersive mixing. Where small or uniform dispersions are required, material must be cycled through the head many times to ensure statistically that all of the material has passed through the high shear zone at least once. The viscosity range of fluids to be sheared is restricted, especially in batch mode, as the mixer uses a centrifugal pumping action which is not effective at higher viscosities. Although their dispersion performance is limited, vacuum emulsifying mixers are fairly flexible in terms of their duties and capabilities and are also available in both batch and inline forms.
Vacuum mixing systems are designed for relatively high fluid discharge velocities in order to disperse the gas into fine bubbles throughout the liquid. This will retain the gas in the liquid as long as possible and provide greater contact surface between the gas and liquid phases. The liquid in the vessel will expand by the volume of gas entrained and it is therefore necessary that adequate expansion space be provided above the normal ungassed liquid level. Under conditions of high gas input and/or low tank pressure the batch may expand considerably resulting in a reduced batch specific gravity.