JSP ultrafine powder classifier

Product Advantages

(1) The use of the JSP series ultrafine powder classifier creates the necessary conditions for the production of high-surface-weight ultrafine powder products. The JSP series ultrafine powder classifier has higher classification accuracy for ultrafine powders, and the particle size of the powder can be adjusted arbitrarily within the range of 1~20μm. The fineness range of non-mineral ultrafine powder preparation is: 650m/kg~1000m/kg. Equipped with a high-efficiency ball mill, the material temperature during the material processing is lower than 110℃, and the grinding efficiency is higher.

(2) The classification efficiency of the classifier reaches more than 80%. Due to the high powder selection efficiency, the production capacity of the sorting system is greatly increased. Compared with the open-circuit grinding and sorting system, it can increase production by 25%~50%; the increase increases with the decrease in fineness.

(3) Power consumption is reduced. The unit power consumption of the system grinding can be reduced by 20%~30% compared with the open-circuit grinding system. (4) Clean emissions, high level of civility, simple process flow. The system uses high-efficiency micro-powder collection equipment, and full negative pressure operation makes the dust emission (under standard conditions) less than 10mg/㎡.

(5) The uniquely designed classification flow field and vertical classification wheel can classify the product particle size, reduce the friction between the powder and the classification wheel, and greatly extend the service life of the classification wheel.

(6) The material contact part uses ceramic or austenitic stainless steel for wear resistance, and the rounded corner design avoids energy consumption caused by eddy currents. The fluid resistance is reduced and the wear is greatly reduced. It meets GMP requirements.

Working Principle

The housing consists of upper and lower cones, a sealing cover, and an ash hopper. The housing is equipped with support plates, guide vanes, and air seals. Inspection doors are located on the sides and top of the housing. The upper portion of the housing supports the weight of the motor, reducer, and supports connected to the classifier's main shaft.

The rotating section consists of the rotor, coupling, and main shaft assembly. The rotor is keyed to the main shaft, which rotates through the transmission. The rotor is the core of the classifier. The main shaft and bearings are mounted on a main shaft sleeve. The bearings are lubricated with dry oil and sealed with a rubber skeleton oil seal.

The ground material is fed into the classifier's inlet, where it is dispersed by the primary air flow and carried between the guide vanes and the rotor. Classification occurs within the rotating airflow, primarily based on the balance between centrifugal force and the centripetal force of the rotating airflow, achieving effective classification. The secondary air inlet serves as the air inlet to the air dispersion device. Coarse particles flow downward into the device, where they are dispersed and separated by the secondary air flow at the guide vanes. Unselected fine particles are carried upward by the airflow and re-enter the primary separation zone. Further coarse particles flowing downward pass through the hopper and are further separated by the tertiary air, which further removes any fine particles mixed with the coarse powder. The selected coarse powder is discharged through the coarse powder outlet. The fine powder is discharged through the rotor center along with the air through a curved pipe and collected in a dust collector as the finished product.

This machine operates under negative pressure, and the separation air can be dust-laden air, outside air, or a mixture of the two. The primary and secondary gases enter the classifier from their respective air inlets, form vortices through the fixed guide blades at a certain angle and the grating of the rotor, and the tertiary air is blown into the classifier from the lower part of the air flow dispersion device.

Technical Specifications