Factors influencing the pulverizing effect of Chinese medicine ultrafine pulverizer

The main factors affecting the effect of ultra-fine comminution are as follows: 1 The influence of medium filling rate on comminution effect the comminution efficiency of drugs will increase with the increase of medium filling rate, but when it reaches a certain degree, because the comminution space becomes smaller, the working medium is difficult to disperse and cannot fully contact with drugs, at this time, the comminution efficiency drops sharply When the filling rate of the medium is too small, the movement of the medium is only carried out in the lower part of the cylinder, the force on the material is not complete, and the crushing effect is not good There is a good matching relationship between the amplitude of Juncheng ultra micro pulverizer and the filling rate of the grinding medium, which is between 60% and 70% 2 The influence of moisture on the grinding effect the strong impact of the material in the grinding process makes the moisture in the material move out, forms a liquid bridge between the powder and greatly enhances the adhesion, which seriously affects the dispersion of the material in the grinding chamber In the process of material comminution, the higher the moisture content, the lower the energy transfer and utilization ratio, and the greater the influence on the particle size and specific surface area of the powder Water often affects the characteristics of the material The high water content of the drug will greatly increase its toughness, making it difficult to carry out the comminution In actual production, different materials should be dried appropriately, and the moisture content of materials should be controlled at about 2% ~ 5% 3 Generally, the smaller the particle size of raw material is, the smaller the particle size of powder is, the larger the number of nano particles and the larger the specific surface area are 4 The influence of the amount of feed on the pulverizing effect when the amount of feed is too much, it will lead to the agglomeration of the powder and become the secondary particles, and the particle size of the powder will increase According to the nature of texture, the amount of Astragalus is different When the amount of Astragalus is 20% of the container, the crushing effect is better 5 The impact of grinding time on the grinding effect is not that the longer the grinding time is, the better for most materials The energy utilization rate of the crusher in the early stage of grinding is higher than that in the later stage This is because some particles in the product will form a relatively solid agglomerate under the effect of excessive grinding force, thus producing the reverse grinding phenomenon 6 In the process of comminution, there will be violent friction and impact between the filling medium and the medium, between the medium and the medicine, between the medicine and the medicine, which will produce a lot of heat energy, and the temperature will rise sharply, which will cause the medicine to soften and increase the difficulty of comminution Some drugs with high thermal sensitivity, high sugar content and rich volatile components are difficult to be crushed by general pulverizers Juncheng ultrafine pulverizer is equipped with a refrigeration system for the pulverizing equipment The pulverizing temperature is controlled below 10 ℃, the texture of the medicine is relatively brittle, and the particle size of the powder can be better controlled.