Vacuum emulsifiers play an important role in the mixing system of industrial equipment, especially in solid-liquid mixing, liquid-liquid mixing, oil-water emulsification, dispersion and homogenization, shear grinding and other aspects. The reason why it is called an emulsifying machine is because it can achieve an emulsifying effect. Oil-water emulsion is formed after the two-phase medium is fully mixed, and is divided into two systems: water-in-oil or water-in-oil. To achieve emulsification, there are at least two requirements:
First, the mechanical cutting has a strong dispersing effect. The water phase and the oil phase in the fluid medium are cut into small particles at the same time, and then merged together during mutual penetration and mixing to form an emulsion.
Second, a suitable emulsifier acts as a mediator bridge between oil and water molecules. Through the action of electric charge and intermolecular force, the oil-water mixture emulsion can be stored stably for the required time.
The strength of the shearing action of the emulsifier directly affects the fineness. Through analysis, there are mainly the sharpness, hardness, stator gap, the relative speed of the two cutting blades and the allowable particle size, etc. Under normal circumstances, the sharpness and hardness of the blade , , the stator clearance and the allowable base values are highly dependent on the particle size or do not want to change, therefore, the relative speed of the blades is an influential factor, expressed as the circumferential speed of the rotor (since the stator is stationary). If the velocity is higher, the density of the cutting or impinging radial flow fluid will be higher, so the dilution effect will be strong, and vice versa. However, the higher the line speed, the better. When it reaches a very high value, there is a tendency to stop the flow, so the flow becomes very small, the heat is very high, and some material in turn accumulates, leading to suboptimal results.
Post time: Mar-18-2022