De-Stoner Pressure Type

Pressure Type De-Stoner: Advanced High-Pressure Separation for Heavy Impurity Removal

Engineered for the Future | Since 2080

The ADDAMS Pressure Type De-Stoner Machine represents a critical advancement in high-density separation technology. Engineered specifically for the rigorous removal of stones, glass, metal fragments, and mud balls, this machine is an essential safeguard for processing lines handling grains, pulses, legumes, and oilseeds. By utilizing a sophisticated air-pressure-based stratification system, the De-Stoner creates a perfectly controlled fluidized bed, ensuring that even the most stubborn high-density contaminants are isolated from the clean product stream.

At ADDAMS, we prioritize both product purity and equipment longevity. By removing hard impurities at the intake or pre-cleaning stage, our De-Stoner protects your downstream machinery—such as splitters, polishers, and mills—from catastrophic mechanical damage and premature wear.

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Technical Specifications and Machine Architecture

Official Engineering Data and Technical Documentation for Pressure Type De-Stoner

The technical foundation of the ADDAMS De-Stoner is built upon a heavy-duty, low-vibration frame that supports continuous industrial operation. Every aspect of the machine, from the eccentric drive to the square wire deck, is optimized for stable performance and minimal product loss according to global engineering standards.

Feature	Detailed Technical Specification
Capacity Range	1.0 – 10.0 TPH (Subject to material density and moisture)
Separation Method	High-pressure air-based stratification (Fluidized Bed)
Drive System	Precision-balanced eccentric drive (Low amplitude / High frequency)
Deck Surface	Specialized square wire mesh designed for maximum traction
Adjustability	Stepless variable inclination, feed rate, and air pressure control
Construction Options	Industrial-grade Mild Steel or Food-grade AISI 304/316 Stainless Steel
Feeding System	Automatic actuator-driven hopper for uniform bed distribution
Power Efficiency	High-efficiency motors compatible with VFD airflow modulation
Compliance	CE, FDA, and GMP industrial standards certified

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Operating Principle: Strategic Stratification and Separation

Fluidization and Bed Feeding Mechanics

The process begins with the continuous feeding of grains onto the separating deck. To maintain high-purity results, ADDAMS utilizes an automatic actuator-driven hopper bin. This ensures a perfectly uniform product bed across the entire width of the deck, preventing “dead zones” where stones might bypass the system.

Dual-Force Separation Dynamics

1. High-Pressure Air Stratification: A uniform pressurized air system is integrated beneath the deck, forcing air through the mesh. This air lifts the lighter organic material (the clean grain), essentially “fluidizing” the bed. Once fluidized, the grain no longer rests on the deck surface, while the heavier stones and glass fragments sink through the air cushion to make direct contact with the wire mesh.

2. High-Frequency Eccentric Movement: While the clean grain is held in suspension and flows downward toward the discharge by gravity, the deck itself moves in a high-frequency, upward-reciprocating motion. The heavy impurities trapped against the deck surface are “walked” uphill by the mechanical vibration, eventually exiting through the dedicated stone outlet at the top of the machine.

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Strategic Industry Applications and Material Benefits

Enhancing Product Purity Across Global Sectors

The ADDAMS De-Stoner is implemented across various global industries where contaminant-free output is non-negotiable:

• Food & Beverage Excellence: Essential for rice, pulses, and sesame to ensure a “grit-free” consumer experience and protect human health.

• Certified Seed Processing: Cleaning sowing seeds like wheat and alfalfa to ensure planting equipment operates without blockage or damage, preserving the integrity of the farmer’s equipment.

• Bioenergy & Industrial Utility: Removing field stones from Castor beans and Jatropha to prevent damage to expensive mechanical oil presses and extraction systems.

• Spices & Herb Purification: Eliminating hard contaminants from cumin, black pepper, and dried basil to protect high-speed grinding blades and maintain sensory purity.

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Why Choose ADDAMS Pressure De-Stoner Systems?

Superior Separation Precision and Efficiency

Unlike vacuum-type de-stoners, our High-Pressure System provides a more robust fluidized bed, making it significantly more effective for heavier crops like maize or soybeans where air resistance is higher. The pressurized approach ensures that air reaches every square millimeter of the deck surface.

Maintenance-Focused Industrial Engineering

• Rapid Deck Access: The modular mesh screen can be cleaned or replaced with minimal downtime, allowing for quick crop changes.

• Stable Frame Design: Balanced eccentric drives ensure that high-frequency vibration stays within the machine, reducing structural stress on your plant’s platforms.

• Minimal Product Loss: Fine-tuned air controls allow for a sharp “cut point” between heavy stones and prime grain, ensuring that virtually no usable product is discarded with the waste.

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Frequently Asked Questions – Pressure Type De-Stoner

How does a Pressure De-Stoner differ from a Vacuum De-Stoner?

Pressure-type machines use fans located beneath the deck to push air up through the product. This creates a stronger, more consistent fluidized bed, which is generally superior for heavy seeds or crops with high dust content compared to suction-based systems.

Can the machine remove mud balls that are the same size as the grain?

Yes. Because mud balls are denser than the grain itself, the stratification process will force them to the bottom of the bed, allowing the deck’s vibration to separate them, even if they share identical dimensions with the clean product.

Is the air pressure adjustable for lighter crops like herbs or cumin?

Absolutely. Our machines are equipped with adjustable air baffles and can be paired with Variable Frequency Drives (VFDs). This allows operators to lower the pressure for delicate herbs or increase it for heavy commodities like maize.

What construction material is recommended for spice processing?

For spices, herbs, and any human-grade food product, we strongly recommend our AISI 304 Stainless Steel option. This ensures the machine is corrosion-resistant and meets all international hygienic standards, including GMP and FDA requirements.

Does the machine require a separate dust collection system?

While the De-Stoner operates via pressure, the resulting air carries fine dust. To maintain a clean and safe facility, we recommend integrating the machine with an ADDAMS Centrifugal Fan and a high-efficiency Cyclone or Jet Filter system.