WFQ series fluidized bed airflow crusher

Equipment composition and working principle

Fluidized bed airflow mill is composed of three parts: classification chamber, crushing chamber and frame. The classification chamber can be divided into direct and parallel type according to the motor drive mode. According to the feeding mode, there are two kinds of feeding: the inclined pipe entering from the upper part of the classification chamber and the forced entering from the injection feeder at the lower part of the crushing chamber. Material into the crushing chamber, the expansion of the compressed air through crushing nozzle JiJu acceleration produced by a supersonic jet flow formed at the bottom of the crushing chamber centripetal reverse jet flow field, under the action of pressure difference, make grinding bottom material fluidization, materials are accelerated in the intersection of multi-nozzle rendezvous, produce severe shock, collision, friction and shattered. The pulverized fine powder moves with the airflow to the upper turbine classifier, and under the action of centrifugal force, the coarse powder is thrown to the cylinder wall and continues to be pulverized. The fine powder that meets the fineness requirements is discharged from the exhaust pipe. The feeding rate of the crushing chamber is adjusted according to the current of the classifier motor and the pressure of the injector, so that the crushing is always in the best working state.

The performance characteristics of

The machine integrates crushing, grading, mixing and homogenizing mechanisms, realizing the unique advantages of online operation, so it has the following characteristics:

1. High impact velocity, particles are accelerated by the airflow nozzle after the hedge impact, impact velocity is the superposition of two relative speeds, high crushing efficiency.

2. Low energy consumption, compared with other forms of air mill, can save energy by 30-40%.

3. Small wear, because particles impact and collide with each other in the fluidized bed, particles rarely collide with cylinder wall and materials do not pass through the nozzle, so it is suitable for crushing hard materials.

4. The built-in turbine classifier has high classification accuracy, narrow particle size distribution and convenient particle size adjustment.

5. Wide application range, can crush heat sensitive materials.

6. Compact structure, covering an area of 3-6 times less than the traditional air mill, 6-10 times smaller in volume.

7. The equipment is easy to clean, and the grinding variety is convenient to change.

Scope of application

This machine can be widely used in chemical industry, metallurgy, non-metallic ore, electronics, medicine, pesticide, pigment, food, cosmetics and other industries.