Ⅰ. WORKING THEORY
PRODUCT INTRODUCTION
The using speed of the toothed high speed decentrilizer of all the
impellers is the highest with the speed of 500-3000r/min being
equal to the speed of the impeller sides 15-30m/s. The ratio of the
impeller diameter and the kettle diameter(d/D) is 0.25-0.35.
Although the viscosity and the diameter increase, the d/D will not
surpass 0.5.
The adoption area of the toothed high speed decentrilizer: liquid
and liquid decentrilization system such as the mixture of
colophony, the solid and liquid system such as the high
decentrilization of the kaoline, clay, calcium chloride and dye.
The suitable scope of the viscosity is less than 50Pa.s.
WORKING THEORY
DECENTRILIZATION PROCEDURE
The familiar use of the machine is to add the infinitesimal solid
particle into the liquid or the auxiliary and form into suspensing
particles in the decentrilization process. The process is as below:
liquid particle filtering into the powder particle and realizing
dissolution and infiltration
the tooth face of the high speed decentrilization impeller
homogenizing the particle
the dissolution, the decentrilization, the homogenization and
reation between the liquid particle and powder particle in the
block
VORTEX EFFECT
To get the best working effect of the high speed decentrilizater,
we must pay attention to the cooperation of the switch, the
diameter, the speed around the decentrilization tray and the
container, and the height from the decentrilization tray to the
bottom of the container and the denaturalization of the materials.
The relationship between the correct diameter and the location of
the decentrilization tray and the container size can produce a
felicitous moving status as the left picture.
AN IDEAL VORTEX STATUS
The material will accelerate forth from the edge of the
decentrilization tray. When reaching the wall of the container, the
material will be seperated into two parts. One part will move
downwards along the bottom of the container to the center and then
to reach upwards to the center of the decentrilization tray. And
the other move upwards with a similar way, but it will move
downwards because of the denaturalization of the material and the
gravitation. The switch of the vortex is influenced largely by the
rate of the liquid and the powder. If the powder is not enough, it
will bring splash and air bladder because of the low material
viscosity; equally, if the solid is too much, the movement of the
material will be influenced by the bending index of the viscosity
and then will be lancinated. The decentrilization tray cannot
contact with the material when rotating. Therefore there is no
ideal vortex existing.
THE DECENTRILIZED EFFECT OF THE PARTICLE IN THE DECENTRILIZING TRAY
When the decentrilizing tray make a high speed rotation in the
material of high viscosity, there wil be a stress district of
different height around the impeller. And the movable pressure can
bring out the decentrilizing effect on the particles. Meanwhile the
decentrilizing effect will appear when the larger particles crash
the impeller edge and the container wall heavily.
But the major decentrilizing work arises in the decenctrilizing
tray. The high speed rotation will form the cropping ladders in the
decentrilizing tray and the decentrilzation happens in the ladders.
The distance between the decentrilization tray and the
PAY ATTENTION TO THE FOLLOWING POINTS WHEN USING THE HIGH SPEED
DECENTRILIZER
TEMPERATURE
The sawtooth blade of the toothed high speed decentrilizing
impeller tray rotates with high speed and make itself have a high
cropping force. Seventy five percent of the energy around the blade
will be transmitted to the material by the form of cropping. And
the major part of the energy will be changed into the heat and make
the temperature of the kettle increase. Therefore if the
temperature of the dealing liquid is not allowed to increase, the
jacket must be used to cool the liquid.
TIME
When using the high speed decentrilizing machine, the terminal
decentrilizing cooling of the material will be reached within ten
to fifteen minutes.
VORTEX EFFECT
The vortex should be ensured to happen in the whole
decentrilization procedure.
THE SPEED OF THE RUNNING SHAFT
In the premise of the vortex not being damaged, the charging of the
largest mechanical power realizes when th
