Multi-Frequency Vibrating Screen
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Separate Frequency & Amplitude Adjustment by Sections for Higher Screening Efficiency: Separate vibration parameter control matches material dispersion and fine screening. Screening efficiency increases by 5%–12% vs standard linear & circular screens with greatly improved fine grain recovery rate.
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Multiple Self-cleaning Decks for Long-term Anti-clogging of Sticky Wet Materials: Optional polyurethane relaxation panels, string steel bars and curved probability mesh deliver vibration intensity from 3G to 50G, adapting to materials with 8%–20% moisture and drastically cutting manual cleaning downtime.
- Fully Static Rigid Sealing, Low Noise & Eco-friendly Complying with Global Standards: Eliminates aging flexible joints; rigid sealing at all moving joints prevents dust leakage. Built-in double sound insulation reduces running noise below 80dB. Reserved negative-pressure dust ports, optional rock wool insulation for high/low temperature working conditions.
1. Product Overview
Multi-Frequency Screen is a new generation composite screening machine with segmented independent vibration sources. It completely subverts the synchronous overall vibration structure of conventional vibrating screens. Core innovation: the screen cabinet, base and top cover remain static without vibration; only segmented screen decks and exciter units vibrate independently. Each section is equipped with separate frequency-conversion exciters to switch freely between two modes: low frequency & large amplitude at feeding end for material dispersion, high frequency & small amplitude at discharge end for precise fine screening. It thoroughly solves industrial pain points including sticky mesh clogging, heavy foundation load, dust leakage and high energy consumption.
The full series adopts lightweight split modular design and fully static rigid sealing with negative-pressure dust removal. Dynamic-static foundation load is cut by 50% and power consumption reduced by 40%-50% vs traditional screens. Multiple optional decks including polyurethane relaxation panels, self-cleaning string bars and multi-layer curved probability mesh cover all working conditions: wet coal washing, dry aggregate processing, coking coke screening, thermal power fine coal separation and high-moisture sticky lump ore treatment. Six sub-models (C/XC/G/L/X/Y) are available for grading, dewatering, desliming and medium removal of mineral, aggregate and coal materials with particle size 0–150mm and moisture content 0–20%. It serves as cost-effective replacement for imported screening equipment in mining, coal washing, metallurgy, aggregate and thermal power industries.
2. Detailed Description
The machine consists of 5 core components: static sealed cabinet, multi-section independent vibrating screen cores, split frequency-conversion exciters, damping support springs and PLC frequency control system. The cabinet is fully fixed with no vibration transmitted to plant foundation.
1. Materials enter feeding section: low frequency & large amplitude generates strong throwing force to break agglomerates and thin thick material layers for primary stratification.
2. Height difference between sections realizes secondary tumbling stratification for automatic separation of lumps and fine grains.
3. Rear sections switch to high frequency & small amplitude to boost fine particle penetration rate.
4. Continuous deformation of screen panels (relaxation stretch, secondary micro-vibration of bars, curved probability screening) realizes dynamic self-cleaning to eliminate sticky silt clogging.
5. PLC independently adjusts frequency, amplitude and linear/elliptical vibration track of each section to fit materials of various viscosity and moisture.
6. Standard dust extraction ports reserved on cabinet, rigid connection with upstream & downstream equipment for fully enclosed dust-free operation under negative pressure.
3. Why Choose Us
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Segmented independent multi-frequency excitation system, separate frequency & amplitude adjustment for higher screening efficiency: Cancel unified vibration parameters of conventional screens. Low-frequency large amplitude breaks thick feed bed; high-frequency small amplitude accelerates fines penetration. Flexible vibration setting for various sticky/dry/wet materials, 7%-12% higher efficiency than linear & circular screens.
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Stationary frame with rigid static sealing, negative pressure dust suppression & low noise for green mines: Stationary cabinet eliminates dust leakage of flexible joints. Dedicated dust port forms internal negative pressure for zero overflow dust, built-in sound insulation cuts noise by 8–10dB and reduces supporting fan air volume demand by 40%-45%.
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Light low-vibrating assembly, drastically reduced foundation load to cut civil construction cost: Only screen decks and vibrators vibrate with 75%-80% less vibrating mass than integrated screens. Multi-point composite damping springs cut single-point ground load by 50%-65%. No heavy reinforced damping base required for new or renovated workshops.
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Multi-material modular screen panels with dedicated self-cleaning structure to reduce blinding downtime: Optional manganese mesh, perforated steel, PU, movable bar & flip-flow panels with exclusive self-cleaning structure. Stable operation for sticky wet feed with minimal blinding, extending screen service cycle by 3–3.8 times and cutting manual cleaning labor by over 70%.
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Full-condition wear & corrosion resistant technology, low weld cracking risk for doubled service life: All slurry-contact parts coated with thick polyurea for wet models, hardfacing overlay for dry models. Laser cutting, robotic welding and integral stress relief eliminate weld cracking risks, extending service life by over 50% under round-the-clock mine operation.
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Segmented independent vibrator modules, offline single-section maintenance for zero full-line shutdown loss: Fully independent segmented vibrator assemblies allow offline maintenance of single deck without full-line shutdown. External long-life grease lubrication avoids oil contamination, intelligent monitoring alarms abnormal bearing temperature, amplitude and eccentric mass for non-stop production.
4. Specifications & Technical Data
| Technical Parameter | Specification Detail |
| Vibration Trajectory | Segmented Directed Linear Motion |
| Number of Drive Units | 2 – 12 Independent Exciters |
| Screen Deck Width Range | 1200 – 4200 mm |
| Screen Deck Length Range | 3000 – 9600 mm |
| Processing Capacity | 80 – 1500 t/h |
| Max Feeding Particle Size | ≤ 150 mm |
| Screening Accuracy | ≥ 95% |
| Vibration Frequency Range | 730 – 1500 rpm |
| Installation Incline Angle | 10° – 25° |
| Screen Media Material | High elasticity polyurethane screen plate, polyurethane slit screen plate,
bar screen plate, punched screen plate, stainless steel screen plate |
| Total Equipment Weight | 5.5 – 55 Tons |
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