What is the control of particle size of superfine air flow pulverizer

The control of the particle size of the product by the superfine air flow pulverizer depends on the superfine air flow pulverizer It is the shearing of materials by high-pressure air flow, the impact between particles of materials and the impact and friction between materials and other parts of the equipment that make the materials crushed The ultra-fine air flow pulverizer can be operated in a sterile state After being crushed by air flow, the average particle size of materials is fine, the particle size distribution is narrow, the particle shape is regular and the surface is smooth, with the characteristics of high purity, high activity, good dispersion, etc., and There is no heat generated during grinding, so it is suitable for grinding low melting point and heat sensitive substances Therefore, the superfine air pulverizer is very suitable for the superfine preparation of drugs According to statistics, about 25% of the superfine air pulverizers in the world are used in the pharmaceutical industry The control of the particle size of the product by the superfine air flow pulverizer mainly depends on the particle size of the raw material, the crushing pressure, the feeding pressure and the feeding speed The logical relationship between the superfine airflow pulverizer and these parameters is as follows: the smaller the particle size of raw materials, the higher the pulverizing efficiency, on the contrary, the larger the particle size of raw materials, the lower the pulverizing effect When the crushing pressure and feeding pressure are fixed, the product will be finer if the feeding speed is reduced, and the product will be coarser if the feeding speed is increased In the case of a certain feeding speed, the product particle size will be finer if the grinding pressure is increased, and the product will be coarser if the grinding pressure is reduced Therefore, the particle size control is to achieve different fineness by adjusting the parameters of the ultra-fine airflow pulverizer in the pulverizing process Before pulverizing, it is necessary to determine the relationship between the feeding speed and the pressure and then determine the appropriate pulverizing parameters to meet the particle size requirements of customers The particle size of the product needs to be checked by the particle size detector to check the fineness and distribution range In addition, if the measurement is more accurate with the help of the electronic microscope, the test results can also be compared with the internationally famous particle size detector The ultra-fine airflow pulverizer is a relatively precise machine Some details in the daily use and maintenance process still need the operator's attention In order to improve the pulverizing efficiency of the ultra-fine airflow pulverizer, it is necessary to check whether the raw materials meet the requirements before production, and it is strictly prohibited to mix foreign matters in the raw materials During production, a certain amount of materials must be kept in the grinding chamber of the ultrafine air flow pulverizer In the case of constant flow of pulverizing gas, there are more materials in the grinding chamber, and the current of classifier is large; there are less materials in the grinding chamber, and the current of classifier is small In addition, the feeding speed must be kept uniform and stable, not too fast or too slow If the feeding speed is too fast, the equipment will be overloaded It is also necessary to maintain the equipment on a regular basis, check whether the air supply pressure reaches the pressure required for pulverization, and check the grading motor of the ultra-fine air flow pulverizer After 3000 hours of operation, or after long-term shutdown and long-term storage and reuse, please timely clean the materials adhered to the nozzle of the ultra-fine air flow pulverizer, the inner wall of the grinding chamber and the grading part to prevent shadow The pulverizing effect of ring ultrafine air flow pulverizer All of the above points can ensure that the ultra-fine air flow pulverizer has been working for you with high pulverizing efficiency!