Multi wheel classifier

Main purpose:

WFJ260/4 multi wheel classifier is suitable for particle separation, iron removal, fiber removal, and selection in all powder processing. For example, the selection of gypsum powder, calcium carbonate, and other non-metallic minerals, as well as the iron removal processing and particle separation of feldspar, quartz, alumina, barite, and pegmatite, can easily form precipitates of granular materials such as pigments, dyes, insecticides, resins, cement, and non-metallic limestone, chalk, E-PVC extrusion materials. The classification of inorganic powders in the industry can also separate fiber impurities from materials of different densities, such as recycled rubber. The extraction of special industrial ultrafine powders, such as magnetic powder, has a wide range of applications.

working principle:

During operation, materials are fed into the lower box of the classifier through primary air, which acts as an air screen to fully disperse particles and raise them to the classification area. Due to the high-speed rotation of the grading impeller, particles are subjected to both centrifugal force generated by the grading impeller and centripetal force generated by the viscous effect of the airflow. When the centrifugal force received by the particles is greater than the centripetal force, that is, coarse particles above the grading diameter rotate down the container wall, and the external secondary air is rectified into a uniform vortex through the guiding part, separating the fine particles mixed or adhered to the coarse powder completely. After separation, the coarse particles are discharged from the lower coarse particle port; Fine particles below the graded diameter enter the cyclone separator with the airflow, are collected by the collector, and the purified gas is discharged from the induced draft fan. By adjusting the speed of the driving motor and the size of the secondary air intake, the best grading effect can be achieved.

characteristic:

1. It can be combined with various types of dry grinding machinery (air flow mill, cyclone mill, planetary mill, ball mill, Raymond mill, vibration mill, etc.) to form a closed-loop system. Material grading can also be performed separately.

2. The grading accuracy is high, ranging from d97=2~15 μ m. By adjusting the speed of the grading rotor, the grading particle size can be adjusted and stepless grading can be achieved. The entire grading process adopts frequency conversion operation to achieve automatic control.

3. The classification efficiency is high, and the material is subjected to vortex impact before unloading, further separating the fine particles mixed or adhered to the coarse particles, thereby improving the classification efficiency and accuracy. The particle size distribution is narrow, and 97% of ultrafine powder products smaller than 5 μ m can be obtained.

4. An air seal device is used at the bearing to prevent the bearings at the graded impeller from being contaminated by dust.

5. This machine occupies less space, has a simple and compact structure, is easy to operate, has fewer vulnerable parts, and is low-cost.

6. Low vibration, low noise, smooth operation, easy maintenance and cleaning, high degree of automation.