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What are the factors that affect the emulsifying effect of the homogeneous emulsifying machine?


Release time:

2019-05-20

The homogenizing emulsifier is composed of 1-3 working chambers. Under the high-speed drive of the motor, the material moves at high speed in the narrow gap between the rotor and the stator, forming turbulent flow. The material is subjected to stronger hydraulic shearing and centrifugal extrusion., High-speed cutting, impact and grinding, etc., so as to achieve the effects of dispersion, emulsification and crushing. The factors that affect the emulsification results of the homogeneous emulsifying machine are as follows: 1. the form of the emulsifying head (batch type and continuous type) (continuous type is better than batch type) 2. the shear rate of the emulsifying head (the greater the effect, the better the effect) 3. the tooth shape structure of the emulsifying head (divided into initial teeth, medium teeth, fine teeth, ultra-fine teeth, and the better the effect of about fine teeth

The homogenizing emulsifier is composed of 1-3 working chambers. Under the high-speed drive of the motor, the material moves at high speed in the narrow gap between the rotor and the stator, forming turbulent flow. The material is subjected to stronger hydraulic shearing and centrifugal extrusion., High-speed cutting, impact and grinding, etc., so as to achieve the effects of dispersion, emulsification and crushing. The factors affecting the emulsification results of the homogeneous emulsifying machine are as follows:
1, the form of the emulsifying head (batch and continuous) (continuous is better than batch).
2, the shear rate of the emulsifying head (the larger, the better the effect).
3. The tooth structure of the emulsifying head (divided into initial teeth, medium teeth, fine teeth, ultra-fine teeth, the better the effect of fine teeth)
4, the material in the dispersion wall residence time, emulsification dispersion time (can be regarded as the same motor, the smaller the flow, the better the effect).
5. Number of cycles (the more, the better the effect, and the better the time limit of the equipment)
Homogenizing emulsifying machine
Calculation of line speed.
Shear rate is defined as the relative velocity of the liquid layer between two surfaces.
-=   V  (s-1) (m/s)
g x stator-rotor spacing x (m)
As can be seen from the above, the shear rate depends on the following factors:
-The line rate of the rotor.
-The distance between the two surfaces in this case is the rotor-stator spacing. Kan Kan
Range of spacing between rotors is 0.2-0.4mm-
Rate of rotation V = 4: 3.14: X D (rotor diameter) X x RPM: 60
From the above, the speed and the precision of the emulsification head determine the emulsification effect.
The high rotational speed and shear rate of the ultra-high speed dispersion homogenizing emulsifying machine are important for obtaining ultrafine suspensions. The shear rate of the ultra-high speed shear homogenizer can exceed 200.00 rpm, and the speed of the rotor can reach 66 m/s. In this velocity range, the turbulence caused by shear forces in combination with specially developed motors can make the particle size range as small as nanometer. The shear force is stronger, and the particle distribution of the emulsion is narrower. Due to the extremely high energy density, no other auxiliary dispersion equipment is required, and the particle size under the pressure of 400BAR of an ordinary high-pressure homogenizer can be reached.