What should I do if the feeding system of the jet mill is not uniform?

The jet mill and cyclone separator, dust collector, induced draft fan and feeding system form a complete set of crushing system. After the compressed air is filtered and dried, it is sprayed into the pulverizing chamber at high speed through the Laval nozzle. At the intersection of the multiple high-pressure air streams, the material is repeatedly collided, rubbed, sheared and pulverized, and the pulverized material rises under the action of the fan. The airflow moves to the grading zone, and the coarse and fine materials are separated under the strong centrifugal force generated by the high-speed rotating grading turbine. The fine granules meeting the particle size requirements are collected by the grading wheel into the cyclone separator and the dust collector, and the coarse particles are descended to the pulverizing zone to continue pulverizing. .

The feeding system is one of the key components of the jet mill. In actual use, problems are often encountered, such as unloading of the silo, uneven feeding, or even feeding.

Reasons for not cutting: The material accumulates in the silo knot for a long time, the material absorbs moisture and agglomerates, the bridging phenomenon occurs in the silo, and the cone angle design of the silo has no reference angle of the reference material. It is not a small idea to solve the silo: the design stage fully understands the nature of the material, such as: bulk specific gravity, fluidity, moisture absorption, angle of repose, particle size, flammability and explosive properties. Use auxiliary cutting measures, such as: air disc, air hammer, air blowing, vibration discharge mechanism, manual tapping, etc.

Reasons for uneven feeding: The material is sticky or has good fluidity and the feeding system is defective in design. The problem should be solved systematically according to the nature of the material, such as silo structure, auxiliary blanking structure, feed valve structure, ie auxiliary feeding measures, and air intake and control system.

In some cases, the different operation modes and settings will make the airflow pulverizer less effective in smashing the articles and increase the feed rate. The principle of airflow crushing mainly relies on high-speed airflow to produce between the powder and the powder, the powder and the inner wall. Strong collision to achieve the effect of breaking. If the feed is too small, the purpose of frequent and strong collisions cannot be achieved, so that the force cannot be lowered. In addition, if the fan damper is too large, the internal negative pressure will cause the collision to decrease, and vice versa. If the above two methods can not be achieved by the crusher to achieve a good crushing effect, then it may be better to clean the machine to try out the effect, or it may be that the dust in the machine affects the efficiency and effect of the work.