The dry granulator is suitable for a variety of materials, so the pressure of the dry granulator, feeding, pressing, crushing, and the whole grain speed can be adjusted, so that the requirements for the operation of the dry granulator will be higher, and the manufacturer will generally provide a relative parameter before leaving the factory.
However, in actual use, according to the characteristics of the material and the required particle strength, particle size should be reasonably adjusted, generally for the material with good fluidity, the feeding speed can be slower, the pressure of the easily formed material can be smaller, for the larger particles, the crushing speed can be slower, as long as the screen mesh is not blocked.
When adjusting, you can adjust one parameter appropriately without changing other parameters.
In short, adjust the parameters, as long as the meaning of each parameter can be mastered, in the actual operation according to the specific situation to adjust, but also by constantly experimenting to sum up experience, to achieve the best effect.
Technical parameters of Chinese medicine powder dry granulator:
1. This equipment is mainly used for direct granulation of Chinese medicine powder, Chinese medicine full extract powder and Chinese medicine half extract powder. Meet the production requirements of 40 ~ 80kg/h, at the same time, the particle size is uniform, and the particle rate of 16 ~ 80 goals is more than 70%.
2. The feeding system adopts vertical and horizontal two-stage feeding, the material is pre-compressed and degassed, the feeding speed and pressure are adjustable, and the phenomenon of plugging and aggregate is not occurred.
3. The surface structure of the press wheel is suitable for the production demand of Chinese medicine powder granulation, which is easy to be separated from the press wheel after being pressed into sheet. The press wheel is made of special stainless steel such as Cr12, which is nitrided and has strong wear resistance, fatigue strength and good corrosion resistance on the surface, and long service life.
4. Adjustable speed, clearance and pressure of pressure wheel. With scraping dao and other devices, the gap between scraping dao and the pressure wheel can be adjusted to prevent material from accretion on the surface of the pressure wheel.
5. When working, water cooling is used, tap water or frozen water is circulated inside the press wheel to prevent the material from being heated and discolored, and the cooling water does not leak and damage the material.
6. The side seal plate of the pressure wheel is composed of wear-resistant nitriding stainless steel material, which can effectively solve the phenomenon of powder leakage and does not pollute the material.
7. The diameter of the pressure wheel is not less than 200mm, the width of the pressure wheel is not less than 70mm, and the working area can effectively prevent dust from flying.
8. Crushing and granulation process: The pressed sheet is broken by the cutter teeth and other forms, and then sifted through the stainless steel sieve plate to complete the whole process.
9. The equipment adopts PLC control, which can automatically adjust the feed speed, press wheel speed, press wheel pressure by setting parameters, and can also dynamically observe the press wheel current, feed current, speed, pressure and other parameters, and manually adjust, which can effectively prevent equipment blocking.
10. The parts in contact with the material are easy to install and disassemble, and easy to clean.
11. The main material of the equipment is SUS304 or 316 stainless steel, the sealing material meets the medicinal requirements, and the whole machine meets the requirements of GMP certification.
12.PLC, touch screen, inverter and other key components are imported brands.
Advantages of dry granulator:
Under normal circumstances, the dry process does not need to add additives, and can directly make the dry powder into particles, increase the packing density, improve the appearance and fluidity, and control the disintegration degree, easy to store and transport, save energy than the wet process, improve the multi-process of the wet process, and reduce pollution. In addition, the effect of drug granulation is more obvious for some unstable drugs under hot and humid conditions.
Scope of application of dry granulator:
In general, materials containing crystal water, Chinese medicine extracts, and materials containing a certain amount of water (3%-8%) can be dried granules, in addition to a few special materials such as flour, carbon black, graphite and other materials are difficult to granulate, and pure Chinese medicine crushed without special treatment is also difficult to granulate, you can consider adding appropriate accessories; The fineness of the powder is better at about 80-300 mesh, which has a greater impact on the coarser or finer powder and dry powder granulation:
For coarser powder, the particles are not uniform, and for finer powder, there is a certain difficulty in feeding and pressing, which will directly affect the yield of the particles.
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