Principle of End Runner Mill:
End Runner Mill Similar to the edge runner mill, operates on the principle of crushing and grinding.
However, it uses a pestle and mortar setup.
Construction:
Mortar: Bowl-shaped grinding surface.
Pestle: Heavy cylindrical or conical grinding tool.
Feed Mechanism: Manual or automated hopper for material input.
Discharge Mechanism: Outlet for processed material.
Working:
Material is placed in the mortar.
The pestle rotates or oscillates, crushing and grinding the material.
Continuous rotation or oscillation ensures thorough grinding and mixing.
Processed material is discharged from the outlet.
Uses:
Grinding and mixing of pastes, ointments, and powders in the pharmaceutical and cosmetic industries.
Merits:
Simple and effective design.
Suitable for small-scale production.
Effective for both grinding and mixing.
Demerits:
Limited to small quantities.
High labor intensity for manual operation.
Wear of the pestle and mortar.