The precautions for using the medicinal dry granulation machine mainly include the following aspects:
1. Raw material preparation and characteristic control
Powder characteristics: It is necessary to ensure that the particle size, moisture content, flowability, etc. of the raw materials meet the requirements to avoid uneven granulation or roller sticking due to differences in material characteristics.
Thermally sensitive materials: Materials that are sensitive to moisture or heat (such as certain drugs) require strict control of environmental temperature and humidity to prevent degradation.
2. Equipment inspection and maintenance
Roll condition: Regularly check the wear of the rolls to avoid a decrease in particle quality due to insufficient surface hardness or misalignment.
Sealing and cooling system: Ensure that the side sealing structure is intact to prevent powder leakage; The cooling water system needs to be leak free to avoid overheating of the rolling mill.
Lubrication and vibration: Regularly maintain the hydraulic system and bearings to reduce dust dispersion caused by equipment vibration.
3. Optimization of process parameters
Pressure and Gap: Adjust the pressure and gap of the pressure roller according to the characteristics of the material to avoid excessive compression that may cause loss of compressibility or delamination of the material.
Speed and crushing speed: Reasonably set the roller speed and crushing speed to ensure particle uniformity and production efficiency.
4. Operating standards and safety
Cleaning and disinfection: Strictly follow GMP requirements to clean equipment and prevent cross contamination.
Dust control: Optimize equipment structure or adopt vacuum measures to reduce dust production.
5. Common problem handling
The problem of sticking rollers can be solved by adding lubricants, controlling moisture, or reducing roller temperature.
Low yield: Check the rolling process or adjust process parameters (such as pressure stability) to improve the grain yield.
The above precautions need to be flexibly adjusted based on specific material and equipment characteristics to ensure granulation efficiency and production safety.