The airflow classifier is a screening apparatus for ultrafine powder. The material can be separated from different granularities under the wind of the equipment, which can be said that the airflow classifier is current dry grading. Precision ZUI high equipment in the device. The following small series will explain in detail the working principle, structure characteristics, and performance advantages of the airflow classifier. The working principle of the airflow classifier is moved from the lower airflow at the lower airflow at the lower airflow at the lower airflow at the stage, and the crude material is separated, and the particle diameter is separated under the power of the hierarchical turbine of high-speed rotation. The required fine particles enter the cyclone separator or dust collector (effect: purifying air) by a grading wheel blade gap, and the thick particles of the thick particles disappear, and the DESCEND is descended to the second tone. The strong isolated by the secondary wind, separating the thick particles, and the fine particles rises to the secondary grade of the fractionation area, and the crude particles fall to the unloading mouth. Airflow pulverizer and cyclone separator, dust collector, and airplane set into a set of pulverization systems. The main applicable pulverization mechanism determines its scope, high finished product, typical materials are: super hard diamond, silicon carbide, metal powder, etc. The rotor impeller of the airflow classifier (the rotation of the movable leaves) is a composite bidirectional centrifuge, and the impeller is rotated at a high speed.
The lower portion of the impeller forms a negative pressure zone, and the air in the hierarchy is inserted into the impeller, along the leaf The Take Turns is discharged from the outlet. Under the action of the injection of fine granules, under the action of the control ring, the air flow rotation is moved, and there is a sport in the axial direction and circumferential direction, and the airflow flows through the hierarchical flow in the hierarchy. After the upper exit of the impeller, enter the lower impeller, discharge from the lower impeller outlet, the discharged airflow moves downwardly in the cartridge, and then flows upward through the inner cylinder to the lower air outlet in the impeller, and thus circulating flows to form a cross circulating airflow. The material input from the star feed valve falls into a high-speed rotating tubing plate, and the metering ring is poured under the action of centrifugal force, and the material is submitted downward in the grading cartridge under the action of the gasket. The coarse particulate (dust) is slid from the wall sheet of the control ring on the coarse collector from the wall of the control ring, and the fine powder is delivered to the airflow of the inner suction port above the rotor (rotor) to the lower micro-spinning wind collector. (The inner cylinder of the hierarchy), so that the raw material is divided into two parts, while the remaining air is rotoredIn the lower middle stroke, flow through the blade, spray the fine grain ring, the control ring, and then flow back from the center of the rotor to the rotor, and form a continuous automatic cycle of the rotor. Follow the excess air brought into the material and due to the high leveling room temperature, excess gas is discharged from the remaining wind to ensure the balance of airflow in the classification, stable.
Yu Fengkou sets a filter bag, so that the discharged air is not polluting the environment. The structural characteristics of the airflow classifier is injected under high-speed rotary impelled wheel, and after the gas pressure flowing through the impeller, after the high pressure airflow flows out of the impeller, after ejection of the fine grain ring, the blade of the rotating guide leaf is designed as a curved shape, The inlet is large, small export cross-sectional area, so the airflow pressure reduction of the outlet is reduced, the speed is increased, and the rotten flow is conducive to the grading. The classified point adjustment mechanism sets three adjustment rods and keeps it synchronous with the chain (chain). The adjustment rod moves upward, the fine powder is increased; the adjustment rod moves downward, the fine powder is reduced. The grade continuous continuous continuous (Continuity) is adjusted, the performance of the airflow classifier product is arbitrarily adjustable, the gradular product is up to D97: 3 ~ 150 microns, suitable for fine grading of dry micrometer products. The control loop sets a control ring to ensure the formation of a suitable cross section between the control loop and the injection fine granules, control the flow rate of the airflow (explained: stable stability; no change). The remaining wind port is inevitable in the dry material to bring excess gas, and the level of temperature is high, and the air will expand, so it is designed to maintain a stable and balance of stability and balance between the graded indoor airflow. Performance advantage of airflow classifier
● Suitable for fine grading, graded spherical, sheet-like, and irregular shaped particles, granules of different densities (units: g / cm3 or kg / m3) can also be used. Raise.
● The granularity of the grading product can reach D97: 3 ~ 150 microns, the product particle size is not adjustable, and the variety replacement is extremely convenient. The grading efficiency (extraction rate) is 60% ~ 90%, the grading efficiency is related to the material properties and the particle size of the particle size, the material is fluid, and the particle size required to meet the particle size is high, and the efficiency is high, and then low. The hierarchical rotation speed is high and the vertex cut is accurate. The multi-level classifier is used in series, while producing multiple granular sections of multiple granularities.
● Can be used with ball mills, vibration grinding, Raymond mill and other polls are used in series to form a closed circuit loop. Control System Using Program (Procedure), the running status is displayed in real time, and the operation is easy. The system is negatively operated, and the dust emissions are 40mg / m. After silence measures, the equipment operates noise (decibel (DB)) is not higher than 75 dB (a). The development direction of the airflow classifier is refined: With the continuous expansion of the ultrafine powder market, the demand for large ultra-fine pulverization and fine classification equipment is increased, and the use of large equipment can reduce energy consumption, simplifying the process. And reduce the area, thereby reducing the company's equipment investment funds and production costs. The above is the working principle, structural characteristics, and performance characteristics of Xiaobian to introduce the airflow classifier. The airflow classifier has the advantages of simple structure, adapting to the use of materials, is widely used in the fields of medicine, food, minerals, etc., even with high viscosity, strong agglomeration, difficult dispersion, and poor mobility.