---

Technical Principles of Length Separation

The Mechanics of Hemispherical Pocket Lifting

The engineering success of the Seed & Grain Indented Cylinder Separator lies in the internal geometry of the rotating drum and the precision of the centrifugal force.

• Indented Pocket Geometry: The internal surface of the drum is lined with thousands of high-precision, hemispherical "indents." Shorter seeds or broken fragments fit into these pockets, while longer whole grains do not.

• Centrifugal Lift and Discharge: As the cylinder rotates, the short particles trapped in the pockets are lifted to a certain height and then dropped into a central collection trough. The longer grains remain at the bottom and are discharged at the end of the cylinder.

• Adjustable Trough Control: The position of the internal collection trough can be adjusted in real-time, allowing operators to fine-tune exactly which particles are "caught" and which are rejected.

---

Why Integrate Indented Cylinder Separators?

Strategic Value for Milling and Seed Conditioning

Adding an ADDAMS Indented Cylinder to your processing line ensures that your final product is free from broken fragments and foreign seeds of different lengths.

1. Total Removal of Broken Grains: Ideal for rice, wheat, and pulses where "half-seeds" reduce the market value and cooking quality of the batch.

2. Elimination of Foreign Seeds: Effectively removes wild oats, cockles, and other weed seeds that have the same diameter as your prime product but a different length.

3. Optimized Seed Uniformity: Ensures that every seed in a planting lot is of equal length, which is critical for the smooth operation of precision seeding equipment.

4. Enhanced Milling Extraction: Removing broken kernels before milling ensures a more consistent flour or semolina quality, as broken grains often harbor more dust and bran.

---

Key Features of the ADDAMS Indented Cylinder Series

Engineered for Micro-Precision and Minimal Maintenance

Our Seed & Grain Indented Cylinder Separator category features robust construction designed for high-purity industrial environments:

• Modular Segmented Drums: The cylinders are designed in segments, allowing for easy replacement of the indented sheets if you need to switch to a different pocket size for a new crop.

• Synchronized Multi-Stage Sorting: Available in single, double, or triple-tier configurations to handle multiple sorting tasks (e.g., removing both short and long impurities) in one pass.

• Dust-Tight Enclosure: Fully enclosed housing prevents the release of dust and ensures a clean, safe processing environment.

• Variable Speed Inverters: Allows for the adjustment of the cylinder's rotation speed to achieve the perfect "lift" for different seed weights and textures.

---

Frequently Asked Questions – Seed & Grain Indented Cylinder Separator

1. What is the main difference between an Indented Cylinder and a Screen Cleaner? A Screen Cleaner (vibratory) sorts seeds by their width or thickness. An Indented Cylinder Separator sorts seeds specifically by their length. It is the only way to separate a whole grain from a broken one of the same width.

2. Can I use the same cylinder for wheat and sesame? The "indents" (pockets) are sized specifically for the product. While the machine itself is the same, you would need to switch the internal cylinder sheets to a different pocket size to move from a large grain like wheat to a small seed like sesame.

3. Does this machine remove stones or dust? No. The Indented Cylinder is a specialized length grader. Stones should be removed by a De-Stoner, and dust should be removed by a Pre-Cleaner or Fine Cleaner before the material reaches the Indented Cylinder.

4. How do I know which indent size (pocket diameter) I need? The size depends on the specific variety of your crop and the type of impurity you want to remove. Our engineering team provides custom sizing charts and can test your product samples to determine the perfect indent diameter for your needs.

5. Is the machine difficult to clean between different batches? Our cylinders feature an "Easy-Access" design. The internal trough and the cylinder surface can be cleaned quickly, and the modular design allows for rapid sheet changes to prevent cross-contamination.

6. Can it separate round seeds from elongated seeds? Yes. This is one of the primary uses for the Indented Cylinder. It can lift round seeds (like vetch) out of elongated seeds (like wheat) with nearly 100% accuracy.

7. Is the machine noisy during operation? Because the cylinder rotates slowly and does not use intense vibration, it is one of the quietest machines in a processing plant.

8. What capacities are available for this machine group? Our range covers capacities from 1 ton per hour for specialty seed lots to 15+ tons per hour for large-scale milling and export facilities.