High-Precision Industrial Gyratory Screen
The industrial-grade Gyratory Screen (also known as a Square Swing Sieve) is a newly engineered, high-efficiency screening solution designed to meet the rigorous demands of large-scale, precision dry material classification. Utilizing a unique drive device that generates a regularly changing inertial force around a fixed axis, this equipment seamlessly combines high processing capacity with ultra-precise separation accuracy.
Featuring a riveted, fully enclosed structural design, it eliminates environmental dust contamination while running with exceptional mechanical stability. This versatile screening system optimizes effective screening areas within a compact physical footprint, delivering an operational output up to 2 times higher than conventional single-vibration source equipment.
Working Principle of Gyratory Screen
The Gyratory Screen operates on a advanced compound motion drive mechanism. This drive arrangement generates a horizontal planar gyratory motion, translating the motor’s rotational force into a structured, elliptical reciprocating movement across the screen cloth surface. The material progresses through three distinct motion zones from the inlet to the outlet:
- Feed End (Circular Motion): At the material entry zone, the pure circular motion rapidly disperses incoming dry bulk materials across the full width of the screen mesh, encouraging swift stratification and immediate sorting of fines.
- Center Deck (Elliptical Motion): As the material moves down the deck, the trajectory transitions into a long-stroke elliptical motion. This action extends the net retention time and specific material-to-mesh contact duration, allowing near-size particles to find apertures efficiently.
- Discharge End (Linear Reciprocating Motion): At the final stage, the motion becomes almost purely linear reciprocating, gently conveying oversized materials toward the discharge ports while allowing remaining compliant particles to pass through.
To prevent particle blinding and mesh clogging, an integrated self-cleaning assembly featuring dynamic bouncing balls is positioned beneath each screen layer. These balls continuously impact the grid frames during operation, dislodging stuck particles and keeping the open sifting area clean at all times.
Product Advantages
- High Output & Multi-Layer Grading: Designed with a modular multi-deck framework supporting 1 to 9 tiers in a single structure. It can divide a single continuous feed into up to 10 distinct fractional outputs simultaneously.
- Flexible Screening & Extended Service Life: Utilizing a low-frequency, flexible plane motion, the dynamic acceleration force is 4 to 5 times lower than that of high-frequency vibrating screen variants. This minimizes stress on vulnerable materials, prevents particle degradation, and extends screen cloth lifespan significantly.
- Dust-Free & Environmentally Compliant: The fully sealed and premium-gasketed enclosure ensures absolute dust containment. Combined with low operating noise and low dynamic load transmission to building basements or steel structures, it complies easily with industrial environmental standards.
- Innovative Grid & Quick-Change Mesh Design: Features an engineered outward tensioning attachment system. This eliminates center sagging profiles, reduces uneven localized fatigue wear, and allows operators to complete screen replacements quickly, minimizing operational downtime.
- Advanced Electrostatic Spray Finish: All external surfaces undergo a heavy-duty electrostatic powder coating process, ensuring high wear resistance, rust protection, and a professional industrial appearance.
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Technical Parameters
The industrial-grade Gyratory Screen (Square Swing Sieve) is engineered with a robust, heavy-duty framework to maintain high structural integrity under continuous, high-volume grading loads. The table below outlines the core mechanical and operational configurations for our standard industrial models:
| Model | Screen Dimensions (m) | Effective Sifting Area (m²) | Deck Inclination Angle (°) | Available Screen Layers | Power Rating (kW) | Gyratory Speed (rpm) | Gyratory Stroke (mm) |
| FYBS1535 | 1.5 × 3.5 | 4.5 – 9.0 | 5 – 8 | 1 – 9 | 5.5 | 180 – 260 | 25 – 60 |
| FYBS2040 | 2.0 × 4.0 | 8.0 – 16.0 | 5 – 8 | 1 – 9 | 7.5 | 180 – 260 | 25 – 60 |
Technical Notes & Customization:
- Aperture Range: Compatible with woven wire mesh configurations grading down to 300 mesh for ultra-fine dry separation.
- Capacity Scalability: Actual sifting capacity varies based on the bulk density, moisture content, and particle size distribution of the material feed.
- Drive Options: Equipped with premium, energy-efficient power units suitable for international power grids and continuous heavy-duty industrial processing environments.
- Mounting Arrangements: Can be configured as a floor-anchored unit or engineered as a suspended mounting structure to accommodate specific production line building footprints.
Applications
The industrial Gyratory Screen is built to handle intensive bulk material sorting, complex fractional separations, and abrasive dry solids below 300 mesh across numerous sectors:
Frac Sand & Minerals
High-volume processing of silica sand (petroleum fracturing sand), machine-made sand, quartz sand, crushed limestone, activated carbon, perlite, dolomite, talc, and garnet.
Chemical Processing
Large-scale fertilizer manufacturing (urea granulates, phosphate), soda ash, resin polymers, calcium carbonate powder, and petroleum coke.
Food & Agriculture
Large-scale grain grading, sugar crystals, starch powders, industrial salt purification, and animal feed pellets.
Metallurgy & Materials
Advanced metal powders, abrasives, silicon carbide, refractory compounds, recarburizers, and ceramic pellets.
Flexible Process Configurations
The internal structure can be configured with modular parallel decks depending on specific volumetric capacity and grading path requirements:
- Single-Unit Split Stack: Uses a 9-layer split-deck sequence inside a single housing, converting a complex feed into 10 precisely separated product sizes.
- Dual-Line Parallel Stream: Integrates a 4-deck stack combined with another 4-deck parallel stack within the same frame size to double the output of a single fractional grade.
- Triple-Line Parallel Layout: A balanced multi-layer split (such as 2 decks + 2 decks + 2 decks) that optimizes multiple fractional grading arrangements within a single machine package.
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