Industrial Stone Siever
High-efficiency aerodynamic and vibratory separation systems ensuring absolute purity for your raw materials and protecting downstream machinery.
Protecting Machinery.
Ensuring Purity.
Raw materials often harbor heavy impurities like stones, glass, and metal. Our sieving systems act as the ultimate first line of defense for your plant.
Precision Separation
By combining specifically angled vibratory decks with upward airflow, our Destoners differentiate materials purely by density. This guarantees that heavier impurities are separated from lighter grains and seeds with up to 99.9% accuracy.
Machinery Protection
A single stone can shatter the dies of a pelletizer or severely damage the screens of a hammer mill. Our stone sievers completely eliminate these hidden hazards before they enter the processing line.
Equipped with heavy-duty suspension springs and dual vibratory motors, our systems handle massive continuous loads without transferring destructive vibrations to your factory floor.
Flagship Equipment
Advanced Vibratory Destoner
Gravity & Aerodynamic Separation
The sieving process utilizes the difference in specific gravity and suspension velocity between seeds and heavy impurities. As air passes through the vibrating mesh, lighter materials float downward while stones are driven upward against the slope.
This dual-action force ensures a completely clean separation, preventing good grain from being discharged with the stone rejects.
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check_circleAdjustable deck angle to fine-tune separation for various grains.
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check_circleHighly sensitive airflow control valves for different densities.
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check_circleContinuous, uninterrupted heavy impurity discharge.
Enclosed & Heavy-Duty Frame
Vibratory machines suffer immense stress. Our Destoners are built on a reinforced, thick-walled tubular steel chassis mounted on highly resilient rubber or coil springs to absorb all kinetic shock.
The entire sieving deck is fully enclosed with a negative pressure dust extraction hood. This guarantees a completely dust-free factory environment while processing heavily soiled raw materials.
Operational Impact
Proven Separation Efficiency
Effectively removes stones, glass, metal, and heavy dirt from good grain.
High-throughput models available for continuous large-scale milling plants.
Fully sealed chassis combined with active suction guarantees a clean factory.
Technical Specifications
Engineered Features
Replaceable high-carbon steel wire mesh ensures longevity and can be customized with different hole sizes depending on the grain being processed.
Two synchronized vibratory motors mounted on the sides provide a stable, directional throw that effectively propels stones up the incline.
Built-in wind volume adjustment valves allow operators to perfectly balance the air pressure needed to float the specific grain being processed.
The fully enclosed upper canopy prevents any dust particles from escaping into the environment, drawing them securely out through the exhaust port.
Food-grade rubber bouncing balls are placed under the screen deck, continuously striking the mesh to prevent it from blinding or clogging over time.
The deck's incline can be manually adjusted via a mechanical lifting device, accommodating the specific weight variance of different grains or legumes.
Implementation Protocol
How We Work
Our engineering teams tailor every destoner to match the specific density profiles and impurity loads of your input raw materials.
Material Analysis
We evaluate samples of your raw grain, measuring its specific density against the typical impurities (stones, glass) found in your geographic region.
Screen & Airflow Tuning
Based on the analysis, we select the exact wire mesh size and pre-calibrate the suction fans to create the perfect aerodynamic float layer.
Installation & Calibration
Our technicians install the siever into your processing line and perform on-site pitch angle adjustments for maximum purity yield.
Case Studies & Endorsements
Industry Testimonials
"Before installing the Vibratory Destoner, we had constant downtime because field stones were destroying our hammer mill screens. Since this machine was installed at the intake, it has flawlessly separated out every piece of gravel and glass. It has literally saved us thousands in repair costs."
Mr. Rahul K.
Operations Head, Agrotech Processing
Featured Video Case Study
Mr. Osman Ansari
Managing Director, Ansari Feed Mills
Support & Information
Frequently Asked Questions
The Stone Siever is highly versatile and can clean wheat, paddy, soybeans, pulses, sunflower seeds, corn, and almost any granular raw agricultural or industrial material.
It separates materials based on specific gravity (density), not just size. Because a stone is significantly heavier than a seed of the same size, the upward airflow floats the lighter seed downward along the screen, while the vibratory action drives the heavy stone upward.
Yes, the Destoner relies on negative pressure (suction) to work efficiently. It must be connected to an external centrifugal blower and a cyclone separator to create the necessary upward airflow while securely capturing airborne dust.
The machine is equipped with an integrated self-cleaning mechanism. Food-grade rubber bouncing balls are trapped under the screen; the constant vibration causes them to strike the mesh from below, preventing seeds or clay from blinding the screen.
No. The main sieving deck chassis is completely isolated from the base mounting frame using highly resilient rubber suspension joints or heavy-duty coil springs, which absorb and isolate over 90% of the kinetic energy.
Yes. Operators can manually adjust the pitch (incline angle) of the vibratory deck using a mechanical lifting gear, and utilize the sensitive air valves to tune the suction strength perfectly for light seeds or heavy beans.