Summary：First talk about the dust collection system, according to the change of product fineness, use the small diameter, small taper multi-cylinder combined cyclone du
First talk about the dust collection system, according to the change of product fineness, use the small diameter, small taper multi-cylinder combined cyclone dust collector to replace the large diameter, large taper single cylinder cyclone dust collector of the original Raymond mill system, to improve Fine dust collection efficiency, it is necessary to reduce the diameter of the cyclone, but its processing capacity also decreases, so a multi-cylinder combined cyclone dust collector should be used to meet the powder collection capacity. At present, most domestic Raymond mill production lines use pulse dust collectors to improve production efficiency. Improve dust collection efficiency and reduce drag to reduce pressure loss.
Let's talk about the air intake system. To obtain a good grading effect, in addition to the reasonable structural parameters of the classifier itself, it depends on the air volume and wind pressure passing through the classifier. The blasting volume of the ordinary Raymond mill is matched with the index of the produced powder, and the rated blast volume is large, and the wind pressure is small. From the principle of wind selection of the impeller classifier, the grading particle size is proportional to the square root of the air volume. To obtain a small grading particle size, it is necessary to reduce the air volume passing through the grading wheel. Therefore, under the premise of ensuring the amount of material to be delivered, the rated air volume of the blower should be greatly reduced, and the wind pressure should be greatly increased to overcome the increased resistance after the introduction of the high-speed centrifugal impeller classifier.
The specific measures for improving the air intake system are: the layout of the air supply duct must be short, and the smoothness should be too smooth, avoid turning straight, and absolutely avoid the horizontal arrangement of the pipeline, because straight bend will increase the resistance of the air duct, while straight bend and The horizontal pipeline is easy to deposit dust, which will cause pollution of the finished product. The air blower with high wind pressure and small air volume is nearly half of the air volume of the ordinary Raymond mill, and the wind pressure is more than twice as high. The selection of such parameters not only facilitates the transportation and grading of high-mesh ultrafine powder, but in the case where the air volume is reduced by half, the yield is not reduced, but is increased, and the large particles in the powder are significantly reduced.