The Introduction Of Air Jet Mill

The air mill combines the fluidized-bed jet crushing technology and the self-diverging classification technology, and its core structure is composed of the lower air crushing zone and the upper air grading zone. In the air flow crushing zone, the compressed air is cooled, filtered and dried through a precision Laval nozzle to form a supersonic flow into the crushing chamber. This supersonic airflow makes the material fluidize, and the accelerated material collides violently, frictions and shear at the intersection of multiple nozzles, so as to achieve the ultrafine crushing of particles.

The pulverized material rises to the airflow classification area under the action of the air flow, where the material is classified by the three-dimensional arrangement of the classification worm wheel and the motor drive system. In the process of particle classification, both the centrifugal force and the centripetal force caused by the viscous action of the air flow are affected. When the centrifugal force is greater than the centripetal force, the coarse particles fall into the crushing zone along the cylinder wall and continue to crush. The particles with qualified particle size enter the collector with the air flow through the turbine. In this classification process, the turbine speed is controlled by the inverter to realize stepless speed regulation, which ensures the reliability of classification performance and the flexibility of operation.

1. The air mill adopts a mediumless crushing method to avoid the impurities that may be introduced in the traditional crushing process, thus ensuring the highest purity of the crushed material.

2. Low temperature crushing: Because the whole crushing process is carried out in a low temperature environment, it is especially suitable for processing high-purity new materials and heat-sensitive materials such as medicine and food, effectively reducing the loss of active ingredients.

3. Uniform particle size: the particle size distribution after grinding is narrow, the single particle composition is more, and the quality of the finished product is stable and reliable.

4. Wide range of application: Air flow crusher can handle a variety of materials including extremely hard materials, high purity materials, heat sensitive materials and flammable and explosive materials, showing a wide range of applicability.

5. Simple structure, easy maintenance: there are no complex moving parts inside the equipment, daily maintenance and cleaning work is relatively simple, reducing maintenance costs.

Pneumatic mill is often used in the pharmaceutical industry to prepare fine powder of pharmaceutical raw materials, such as Chinese medicine powder, western medicine powder and plant extracts. Its low temperature mediumless grinding features can maximize the retention of the active ingredients of the drug, while the clean and environmentally friendly grinding process also meets the high standards of the pharmaceutical industry.

2. Food industry: In the field of food processing, air mill is used to crush dried vegetables, condiments, puffed food and so on. Its fine crushing effect not only improves the taste and quality of food, but also meets the strict requirements of the food industry for hygiene standards.

3. Chemical industry: The demand for ultrafine grinding of chemical raw materials such as aluminum hydroxide and nano-zinc oxide is efficiently met through the air flow crusher. Its low temperature grinding characteristics ensure the stability of the original properties of chemical raw materials.

4. New material industry: In the field of new material preparation, air mill is widely used in the preparation of nanomaterials and composite materials. Its fine crushing effect and wide applicability meet the stringent requirements of the new materials industry for the fineness and purity of raw materials.

5. Mineral and metallurgical industry: For the crushing of hard materials such as metal powder and ore, the air mill has become an important equipment in these industries with its efficient crushing ability and adaptability.