Inert gas protection airflow explosion explosion. The whole system has explosion-proof holes in different positions in the whole line, which minimizes the loss during the bursting and explosion caused by the internal pressure and concentration of the system. The motor and other devices used in the whole system are explosion-proof motors, and the sealing performance is better, which effectively reduces the accumulation of dust.Airflow classifier is a screening apparatus for ultrafine powder, and the material can be separated from different granularities, which can be said that the airflow classifier is precision Zui in the current dry grading equipment. device of. The following Shandong Erpai Xiaobian will explain in detail the working principle, structure characteristics and performance advantages of the airflow classifier. The working principle of the airflow classifier
The material is moved from the lower airflow at the lower airflow at the lower airflow at the bottom of the stamper, which causes the crude material to isolate the strong centrifugal force generated by the high-speed rotation of the hierarchical turbine. The fine particles that meet the particle size requirements are collected by the graded wheel blade gap. The thick particles are partially collided with the pellets. The speed is disappeared, and the tube wall drops to the secondary tone, and the strong Amoy of the second wind Wash, separation of the thick particles, and the fine particles rise to the secondary grade of the fractionation region, and the crude particles drops to the unloading port.
The rotor impeller of the airflow classifier is a composite bidirectional centrifuge, and the impeller is high-speed, and the lower portion of the impeller forms a negative pressure region. The air in the hierarchy is entry into the lower portion of the impeller. The spray fine granules flow out, under the action of the control ring, the air flow is moved upward, and there is a sport in the axial and circumferential direction. The airflow flows inward in the hierarchical space, and the upper impeller is imported from the upper impeller outlet. The discharged gas stream moves downward in the cartridge, and then flows upward through the inner cylinder to the lower air inlet of the impeller, so that the circulating flow is formed to form a cross circulating airflow.
The material input from the star feed valve falls into a high-speed rotating blade, and the material is pushed to the feed ring under the action of the centrifugal force, and the material is submitted downward in the hierarchy. Under the action of the cross airflow, the thick particle material is slid from the wall sheet of the control ring to the coarse collector, and the fine powder is delivered to the lower micro-spinning wind collector with the air flow above the upper stroke of the rotor (the inner cylinder of the hierarchy). This, in this way, the raw material is divided into two parts, while the remaining air is inhaled from the central suction port below the rotor, flowing through the blade, spraying the fine grain ring, controlling the ring, and thenThe control ring is rotated back to the upper stroke of the rotor to form a continuous automatic cycle of the week. Follow the excess air brought into the material and due to high leveling room temperature, excess gas is discharged from the remaining wind to ensure the balance of airflow in the classification, stabilize. Yu Fengkou sets a filter bag, so that the discharged air is not polluting the environment.
Structural characteristics of the airflow classifier
Under the high-speed rotary impeller, the gas pressure flowing through the impeller is raised, and after the high pressure airflow flows out of the impeller, it passes through the spray fine loop, due to the rotating guide leaf The blade is designed as a curved shape, a large imported cross-sectional area, small exit cross-sectional area, so the airflow pressure of the outlet is lowered, the speed is increased, and the rotten flow is conducive to the grading.
The hierarchical point adjustment mechanism sets three adjustment rods and keeps it synchronously with the chain. The adjustment rod moves upward, the fine powder is increased; the adjustment rod moves downward, the fine powder is reduced. The graded point may be adjusted continuously, and the performance of the Erfai airflow classifier is arbitrarily adjustable. The gradular product has a granularity of D97: 3 to 150 microns, suitable for fine classification of dry micron-based products.
The control ring is provided with a control ring to ensure that the control loop is formed between the control loop and the injection fine granules, and the airflow flow rate is stabilized. 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.
Airflow classifier performance
● It is suitable for fine grading, graded spherical, sheet-like, and irregular shaped particles, which can be graded for different density particles.
● The granularity of the graded 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% to 90%, the grading efficiency is related to the material properties and the particle size of the particle size, the material is fluidity, the particle size requirements are high, and the efficiency is high, and the vice verse is low. The hierarchical rotation speed is high and the vertex cut is accurate. Multi-level classifiers are used in series, while producing a plurality of particle size sections.
● Can be used in series with polishing equipment such as ball mill, vibration grind, Raymond mill, constitute a closed circuit loop. The control system uses program control, and the operation status is displayed in real time, and the operation is easy. System negative pressure running, dust emissionsAfter 40 mg / m, after silence measures, the equipment operated noise is not higher than 75dB (a).
The development direction of the airflow class
Fine, with the continuous expansion of the ultrafine powder market, each industry has increased the demand for large ultra-fine pulverization and fine classification equipment, and large equipment can reduce the energy consumption of enterprises. , Simplify the process and reduce the area, thereby reducing the company's equipment into funds and production costs.
The above is the working principle, structure characteristics, and performance characteristics of the airflow classifier introduced for you. 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.
In the future, ALPA Powder Technology will further expand its landscape in the Colombian market, and in Colombia as the entry point, gradually radiate Brazil, Chile, and is expected to open a new situation for the South American market. At the same time, the high-light performance in the powder equipment industry, AlPa powder technology has played a positive role in the high-endization and international image of its brand, and further consolidated the leadership of its energy-saving and environmentally friendly powder equipment. Providing a good development idea for the world's powder equipment and even Chinese brands.