The working principle mainly includes the following aspects:
Grading process: The grading wheel rotates at high speed in the grading
housing (the speed can be adjusted), forming a strong centrifugal
force. When the air-powder mixture enters the interior of the
classifying wheel, due to the centrifugal force, large or heavy
particles will be thrown to the periphery of the classifying wheel, and
finally fall into the crushing host to continue crushing; while small or
light materials will be thrown to the periphery of the classifying
wheel due to centrifugal force. Smaller and hovering inside the grading wheel, it is
then guided to a high place by the induced draft fan and moved through
the pipe to the next component for grading or collection.
Classification effect: The design of the classification wheel allows the particles to be further refined while being
impacted and rubbed so that they can be better taken away by the
airflow. Small holes of specific sizes inside the grading chamber can be
adjusted as needed to achieve grading of different finenesses.
Classification mechanism: The blades on the classification wheel will
hit and rub the particles, making them smaller and easier to be carried
by the airflow. The speed of the classifying wheel can be adjusted by
frequency conversion to adjust the size of the centrifugal force to
achieve the purpose of separating materials of specified particle size.
To sum up, the principle of the airflow mill classification wheel is to
achieve the classification and refinement of particles through the
centrifugal force generated by high-speed rotation, combined with the
impact and friction of the blades on the classification wheel on the
particles, and the induced wind force of the induced draft fan.
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