Some knowledge points of dry granulator

The dry granulator adopts a new rolling control technology. The control equipment of this equipment can adjust any fluctuation of physical properties between different materials and different batches of the same material, so that the process parameters of dry granulation can be adjusted accurately and repeatedly. Thus producing high quality pellets. Dry granulation technology can be done by roller plate granulator. The traditional Chinese medicine extract with a certain relative density is spray-dried to obtain dry extract powder. After adding certain auxiliary materials, it is pressed into thin slices with a dry extrusion granulator, and then crushed into granules. The method requires less auxiliary materials and is beneficial to improving the stability, disintegration and solubility of the granules. Dry granulator The particle size and disintegration degree of the dry granulator are adjustable and automatically controlled by PLC, which can meet different requirements and greatly increase the yield. It has the characteristics of high efficiency, high degree of automation, convenient use and maintenance, low noise and good versatility, and is widely used in medicine, daily chemical, food and other fields. With the improvement of environmental protection requirements and the improvement of automation in the production process, dry granulator, as one of the important branches of powder processing, has become more and more important. Granulation of powder products has become an inevitable trend of powder post-processing technology in the world. Dry tumbling granulation has the characteristics of low energy consumption, no need to add binders, low investment and wide range of production capacity. The significance of particle strength processing of powder products is mainly reflected in three aspects: 1. Reduce dust pollution and improve working conditions. 2. The dry granulator can meet the requirements of the production process, such as increasing porosity and specific surface area, improving heat transfer, etc. 3. Improve the physical properties of the product (such as fluidity, air permeability and bulk density), avoid segregation, pulsation, agglomeration and racking in the subsequent operation process (drying, sieving and metering) and use process (measurement and batching, etc.) Bridge and other adverse effects. ). It creates conditions for improving the automation and closed operation of the production and use process. When selecting the drying process of the dry granulator, it is very important to identify the drying performance of the material. Materials can be classified as hygroscopic and non-hygroscopic. Hygroscopic materials can absorb moisture from the surrounding environment, while non-hygroscopic materials cannot absorb moisture from the environment. For non-hygroscopic materials, any moisture present in the environment will remain on the surface as "surface moisture" which is easily removed. However, colloidal particles made of non-hygroscopic materials may also become hygroscopic due to the action of additives or fillers. Drying granulator requires three aspects of knowledge and technology in the development and application of drying technology. First of all, we need to understand the physical and chemical properties of the drying material and the use characteristics of the product. The second is to be familiar with the principles of transfer engineering, that is, the principles of energy transfer such as mass transfer, heat transfer, fluid mechanics, and aerodynamics. Third, means of implementation are required, that is, engineering design of the drying process, main equipment, electrical instrument control, etc. Obviously, these three aspects of knowledge and technology do not belong to one discipline. In the practice of dry granulator, these three aspects of knowledge and technology are indispensable. Therefore, drying technology is a cross-industry and interdisciplinary technology.