Second hand flat airflow crusher

Second hand flat airflow crusherAlso known as disc type air flow mill, it is the earliest application in the field of ultrafine grinding. It uses supersonic air flow sprayed from multiple nozzles in a circular flat cavity to cause severe particle collision, friction, and shear in a high-speed rotating flow field, thereby achieving ultrafine grinding from tens of microns to sub microns, and integrating internal or external grading functions. This device has become a high-value powder in the pharmaceutical, electronic materials, fine chemical, and food industries due to its significant characteristics of no mechanical moving parts, low-temperature crushing, high purity, and narrow particle size distributionSecond hand flat airflow crusher

The high-pressure gas is accelerated into a supersonic jet through a Laval nozzle and sprayed into an annular crushing chamber along the tangential direction, forming a high-speed rotating fluidized bed or strong turbulent layer inside the chamber.

Particle acceleration and collision: Material particles are accelerated by the airflow and swept into the flow field, making high-speed circular motion in the annular region. Due to the intersection of jet streams from various nozzles and the turbulence effect of the flow field, particles undergo frequent collisions, impacts, and shearing (accounting for about 80% of the crushing amount), with a small portion of particles (about 20%) colliding with the inner wall lining and being crushed.

Grading and circulation: The crushed particles move towards the center with the airflow. In the central grading zone, under the action of the grading wheel (or centrifugal force field): fine particles with a diameter smaller than the set value enter the central exhaust pipe with the airflow and are discharged; Coarse particles with a particle size greater than the set value are thrown back to the outer crushing zone due to high centrifugal force to continue crushing, forming an internal closed-loop cycle.

The high-pressure gas is accelerated into a supersonic jet through a Laval nozzle and sprayed into an annular crushing chamber along the tangential direction, forming a high-speed rotating fluidized bed or strong turbulent layer inside the chamber.

Particle acceleration and collision: Material particles are accelerated by the airflow and swept into the flow field, making high-speed circular motion in the annular region. Due to the intersection of jet streams from various nozzles and the turbulence effect of the flow field, particles undergo frequent collisions, impacts, and shearing (accounting for about 80% of the crushing amount), with a small portion of particles (about 20%) colliding with the inner wall lining and being crushed.

Grading and circulation: The crushed particles move towards the center with the airflow. In the central grading zone, under the action of the grading wheel (or centrifugal force field): fine particles with a diameter smaller than the set value enter the central exhaust pipe with the airflow and are discharged; Coarse particles with a particle size greater than the set value are thrown back to the outer crushing zone due to high centrifugal force to continue crushing, forming an internal closed-loop cycle.