Introduction
In seed processing, multiple machines are used together — but many people confuse their roles.
How is a gravity separator different from other cleaning equipment?
Gravity Separator vs Air Screen Cleaner
Air Screen Cleaner
- Removes impurities based on size and airflow
- Good for general cleaning
Gravity Separator
- Separates seeds based on density
- Focuses on quality improvement
👉 Key difference:
Cleaner removes impurities, separator improves seed quality
Gravity Separator vs Destoner
Destoner
- Removes stones and heavy materials
- Uses density difference
Gravity Separator
- Separates seeds of similar size but different quality
👉 Key difference:
Destoner removes foreign objects, separator removes bad seeds
Gravity Separator vs Indented Cylinder
Indented Cylinder
- Separates seeds based on length
Gravity Separator
- Separates seeds based on weight
👉 Key difference:
Length vs Density
Where Does It Fit in the Process?
Typical order:
Cleaning → Screening → Destoning → Gravity Separation → Coating
👉 It is one of the final quality control steps.
Why It Cannot Be Replaced
No other machine can:
- Detect internal seed quality
- Separate by density at high precision
- Improve germination consistency
Conclusion
Each machine has its role, but the gravity separator is the key to achieving premium seed quality.
Want to upgrade your processing line?
Our team can help you design a complete solution with the right equipment combination.



