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Summary
Air classifier is a classifier with air classification equipment, cyclone separator, dust remover, draught fan a grading system. The material suction force under the action of the fan by the lower inlet classifier with the updraft speed to the classification area, strong centrifugal force generated in the high-speed rotation of the turbine grade, the thickness of material separation, meeting the size requirement of fine particles by classifying blade gap into the cyclone separator or dust collection, disappear the speed of the coarse particles entrained fine particles hit the wall, along the cylinder wall decreased to two times after two times the wind outlet, strong washing effect, the particle separation of fine particles up to two grade grade area, coarse particles down to the discharging port at discharge.
Working principle
The impeller air classifier is a composite bidirectional centrifugal impeller rotating speed, forming a negative pressure zone in the lower part of the impeller, grading cylinder air through the inlet into the lower part of the impeller, the impeller discharge along from the outlet, the spray fine ring outflow, in the control loop under the effect of swirling upward movement of in the axial and circumferential velocity, the air flow through the classification of disk space on the upper part of the inward flow of the impeller, the upper inlet into the impeller outlet from the impeller discharge flow rotation in the cylinder and the inner cylinder to move downward, upward to the middle lower part of the impeller inlet, so the cycle flow to form a cross circulation flow. From the star type feeding valve input material falls into high-speed feed tray rotation, under the action of centrifugal force shuaixiang material retaining ring, the material retaining ring under the action of the material down there in the grading cylinder. Coarse particles in cross flow under the action of the control loop from the wall slip in the crude material collector, and fine powder with airflow above the rotor central suction outlet to convey powder below the cyclone collector (inner cylinder cylinder, so that the classification) of raw materials that are divided into two parts and the thickness. The remaining air from beneath the central air inlet rotor vane, spray inhalation, fine loop and control loop, and then from the periphery to the central control loop above the rotor suction outlet to form a continuous, automatic cycle cycle. Follow the excess air into the material and due to the high temperature of the classification chamber, air expansion and excess gas is discharged from the outlet, in order to ensure that the indoor air flow balance, stability. More than a set of air filter bag, the exhaust air is not caused by environmental pollution
performance features
It can be applied to the fine classification of dry process micron grade products, which can be classified into the particles of spherical shape, flake shape and irregular shape.
The grain size of the product can reach D97:3 ~ 150 micron, the product granularity can be adjusted, the variety is very convenient.
Classification efficiency (extraction rate) of 90% ~ 60%, the classification efficiency and material properties, as well as the particle size of the particle content, material flow is good, meet the requirements of particle size, high efficiency, and vice versa.
The high speed of the grading wheel, and the accuracy of the cutting.
Multi classifier used in series, while producing multiple products segment size.
With the ball mill, vibrating mill, Raymond mill, grinding equipment used in series, which closed cycle.
Control system using the program control, running state real-time display, easy to operate.
The system of negative pressure operation, dust emissions 40mg/m, silencer measures, equipment operation noise is higher than that of 75dB (A).
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