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Vertical Air Classifier
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Air classifiers are widely used in chemical, mineral (especially suitable for classification of non-metallic mineral products such as quartz, feldspar, graphite, calcium carbonate, kaolin, talc, mica, etc.), metallurgy, abrasives, ceramics, refractory materials, pharmaceutical and food, new materials and other industries. The complete classification system consists of an air classifier main unit, cyclone collector, pulse dust collector, high-pressure induced draft fan, electrical control cabinet, etc.
Advantages and Features
1. The interior of the classifier is protected with ceramics, resulting in less equipment wear, no product contamination, and high purity.
2. The classifier structure has been specially designed to cut off all large particles, achieving high classification precision and strict large-particle control. The cut point can be freely adjusted through the classifier impeller speed and induced draft fan air volume to obtain the desired product, offering a wide classification range.
3. It adopts a low-speed vertical single-impeller classification structure, ensuring a stable material flow field, large equipment processing capacity, and high classification efficiency.
4. Multi-stage series structure can be adopted to simultaneously classify products into several particle size fractions, achieving an ideal particle size distribution.
5. Different material classifier impellers can be customized according to different customer materials, ensuring high purity and no contamination of the product.
Working Principle
The complete classification system consists of an air classifier main unit, cyclone collector, pulse dust collector, high-pressure induced draft fan, electrical control cabinet, etc.
The air classifier main unit is a forced-type classifier equipped with secondary air inlet and a vertical impeller rotor.
During operation, materials enter through the lower cylinder under the suction force of the induced draft fan and rise to the classification zone. In the classification zone, the materials are subjected to both the centrifugal force generated by the rotation of the classifying impeller and the centripetal force generated by the induced draft fan. When the centrifugal force acting on the materials exceeds the centripetal force, coarse particles larger than the classification particle size are thrown to the inner wall of the cylinder, lose velocity, and slide down along the wall. External secondary air enters through air inlets evenly distributed on the cone, creating an air-screening effect on the coarse particles and thoroughly separating fine powder mixed with or adhering to the coarse material. The separated coarse material is collected by the discharge device and discharged from the classifier, while fine powder below the classification particle size enters the cyclone collector and pulse dust collector along with the airflow and is collected. The purified gas is discharged by the induced draft fan.
Product Structure Diagram
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