Control requirements for dry granulation machine

　　Dry granulation machineAs the wet material is mixed and kneaded, or the softening point of the material is low (usually below 60 ° C), it is extruded from the die hole of the granulator head, which is generated during the extrusion pressure spiral conveying process. Squeeze the material into strips, then dry or cool to obtain short columnar finished particles. In this way,Dry granulation machineMake the powder into uniform particles. The particle shape is cylindrical or irregular in cross-section, and the finished particle size is controlled by the mold hole diameter. In addition, the particle size is 0.6-2.0mm for side discharge and 1.0-12mm for front discharge. Dry granulation machines are widely used for products that require granulation processes, such as catalysts, pesticides, dyes, pigments, drugs, rubber additives, food additives, plastic additives, daily chemical products, etc.

The strength of tablet pressing is generally related to the magnitude of pressure, feeding speed, and the feeding process is also a pre pressing and degassing process. If the air in the material is exhausted as much as possible, the yield rate will be higher. If controlled reasonably, the dry granulation machine can achieve the desired effect and meet the needs of customers.

Control requirements for dry granulation machine:

1. The speed of the mixing blade and the chopper blade should be at least adjustable by a dual speed motor. The speed range of the mixing blade is 30 to 500, and the speed range of the chopper blade is 300 to 3000 rpm. It can be variable frequency speed regulation and set for display.

2. For the dual speed simple control, the control is equipped with start, emergency stop, stop switches and fault display, as well as current display and second gear motor speed change display. When the discharge valve or drain is closed, the motor for mixing slurry and chopping knife can only operate, and vice versa. In addition, the cleaning process can only be entered when the discharge valve is closed.

3. Electrical control should have self-protection function to prevent possible damage caused by misoperationDry granulation machineThe damage caused includes main motor fault protection and emergency stop protection. For configuration, it should be controlled by PL+touch sensitive color LCD panel. The interface design is divided into manual trial operation interface and normal operation interface, and has a good human-machine dialogue interface.

The air door of the dry granulation machine adopts an imported servo system, which enables the air door to control the opening degree by equal percentage, changing the traditional manual method used in the past and fundamentally ensuring the controllability of the boiling state.