Vibratory Screen Grader: Advanced High-Precision Calibration and Fine Seed Grading
Engineered for the Future | Since 2080
The ADDAMS Vibratory Screen Grader stands as an indispensable technological asset for modern processing facilities that prioritize rigorous calibration and high-purity output. Specifically engineered to handle dried and pre-cleaned commodities, this high-performance grading system is the gold standard for processing a vast array of high-value crops—including maize, pulses, premium coffee beans, sunflower seeds, and oilseeds.
At ADDAMS, our 15-year legacy since 2008 has been built on the core principle that industrial efficiency must never come at the cost of product integrity. Our vibratory graders are meticulously designed to provide a “gentle-touch” handling process, ensuring that the biological and physical characteristics of the harvest are preserved while maximizing throughput and production efficiency for better long-term storage and marketability.
Technical Specifications and Machine Architecture
Engineered Performance Data and Capacity
The modern architecture of the ADDAMS Vibratory Screen Grader is focused on delivering superior separation quality within a remarkably compact structural footprint. This allows for seamless integration into existing processing lines without necessitating expensive facility expansions.
| Technical Specification | Detailed Industrial Standards |
| Separation Versatility | Multi-model choice: Undersize only, Oversize only, or Dual-Friction separation |
| Vibration System | Twin High-Efficiency Vibratory Motors with stepless adjustable counter-weights |
| Isolation Technology | Heavy-duty Rosta Suspensions for 98% vibration isolation from plant structures |
| Construction Materials | Industrial-grade Powder-coated Mild Steel or Food-grade AISI 304/316 Stainless Steel |
| Sieve Cleaning System | High-rebound Rubber Ball system for continuous blind screen opening and maintenance |
| Operational Control | Full VFD (Frequency Inverter) compatibility for real-time speed and stroke modulation |
| Ergonomic Design | Quick-release side covers and leading bars for 5-minute perforated screen replacement |
| Customization | On-demand discharge chute heights and specialized aspiration intake modules |
Drive Components and Dynamic Control
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Variable Throw Adjustment: The angle and counter-weights of the vibratory motors can be manually or electronically adjusted to change the product’s residence time on the screens.
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Hygienic Material Selection: For pharmaceutical and food-grade applications, the entire machine contact surface is polished to prevent bacterial accumulation and facilitate rapid washdowns.
Operating Principle: Precision Reciprocating Separation Technology
The Mechanics of Product Stratification
The core of the ADDAMS system lies in its flat reciprocating screens that utilize controlled linear vibration to stratify the product flow. As the material moves across the inclined deck, the vibration ensures that every single kernel or seed is repeatedly presented to the screen perforations at the optimal angle.
Multi-Fraction Product Management
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Precision Undersize Removal: Small debris, sand, broken seeds, and immature kernels are accurately captured and diverted into secondary discharge channels, ensuring the prime lot remains clean.
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Oversize Scalping and Safety: Large foreign matter, straw pieces, or “double-seeds” are effectively scalped from the prime flow, protecting downstream packaging or processing equipment.
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Density Consideration: While primarily a size-based separator, the reciprocating motion ensures that lighter, damaged seeds “float” to the top of the bed, facilitating a cleaner separation of the high-density prime product.
Strategic Application Areas Across Global Industrial Sectors
Food Processing and Security Cleaning Protocols
In the food industry, the Vibratory Screen Grader serves as a vital quality gate. It is used for the separation of smaller seed pieces following a seed huller and acts as a final security cleaning stage for imported seeds. This ensures that no unwanted admixtures enter the human food chain, maintaining strict compliance with global food safety regulations.
Seed Preparation and Pre-Bagging Calibration Excellence
For certified seed producers, uniformity is the most critical metric. The ADDAMS grader provides precise calibration of wheat, maize, and vegetable seeds before they reach the bagging station. Uniform sizing not only improves the market appearance but also ensures consistent performance in automated planting equipment and higher overall germination rates for the end-user.
Why Choose ADDAMS Turnkey Processing Solutions?
Seamless End-to-End Plant Integration
ADDAMS is more than an equipment manufacturer; we are your expert partner in building complete, integrated solutions. Our engineering team utilizes internal expertise to ensure that the Vibratory Screen Grader works in perfect harmony with your intake systems, elevators, and packaging lines.
Dedicated Senior Project Support
From the initial order to the expiration of your warranty, you are supported by a dedicated senior project management team. We focus on real-time automation, SCADA integration, and global compliance (CE, FDA, GMP) to ensure your facility operates at peak sustainability and safety levels.
Frequently Asked Questions – Vibratory Screen Grader
What is the primary difference between a Vibratory Grader and a Rotary Drum?
While both clean seeds, the Vibratory Grader is a precision tool for fine calibration and sorting by width/thickness. It is generally more accurate for final grading before packaging, whereas rotary drums are often preferred for high-capacity pre-cleaning of very contaminated harvest intakes.
Why are Rosta Suspensions considered a “standard” in ADDAMS machines?
Standard spring or rigid mounts transfer destructive vibrations into your building’s steel frame, leading to structural fatigue and high noise levels. Rosta suspensions act as an energy sink, isolating the vibration to the screen deck and significantly extending the operational life of both the machine and your facility.
How do I determine the correct screen perforation for my product?
Our experts analyze your seed variety (e.g., long-grain rice vs. round-seed maize) to recommend either round or slotted perforations. Round holes sort by width, while slotted holes sort by thickness. We provide a wide range of standard and specialized screens for every application.
Can the machine be used for non-agricultural products?
Yes. The ADDAMS Vibratory Grader is highly effective for grading granular industrial materials, recycling products, and even specialized minerals where precise size separation is required.
What maintenance is required for the self-cleaning system?
The rubber ball system is virtually maintenance-free. During operation, the balls bounce against the underside of the screen, keeping the holes clear. We recommend a visual inspection of the balls every season to ensure they maintain their elasticity and effective cleaning diameter.
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