High-Frequency Vibrating Dewatering Screen / Hydraulic Screen for Filtration
High-frequency vibrating dewatering screen is a high-efficiency screening equipment designed for dewatering, desliming, and medium removal of fine materials. It is widely used in washing sand in aggregate plants, coal slurry recovery in coal preparation plants, and tailings dry d...
Specifications
Product details
High-Frequency Vibrating Dewatering Screen
I. Product Overview
The high-frequency vibrating dewatering screen is an efficient screening device specially designed for dewatering, desliming, and medium removal of fine materials. It is widely used in processes such as washing sand in aggregate plants, coal slurry recovery in coal preparation plants, and tailings dry discharge in mineral processing plants. This equipment adopts dual-motor self-synchronizing drive technology. Through high-frequency and low-amplitude vibration, materials quickly form a dense filter layer on the screen surface, achieving efficient solid-liquid separation, and the moisture content of the finished product can be reduced to below 8%.
II. Working Principle
The equipment is driven by two vibrating motors (or flange-type exciters) through belt couplings, running in synchronized reverse rotation. The centrifugal forces generated by two sets of eccentric masses superimpose along the vibration direction, while the reverse centrifugal forces cancel each other out, thus forming a single excitation force along the vibration direction, causing the screen box to perform reciprocating linear motion.
After the material is evenly fed onto the screen surface from the feed box, it first quickly removes part of the free water in the arc section; then the material forms a gradually thickening filter layer on the screen surface, preventing fine particles from passing through. The water that cannot pass through forms a water pool on top of the filter layer. Under the continuous high-frequency low-amplitude vibration, the filter layer is increasingly compacted, forcing the water to be removed, and finally forming a filter cake-like dry material discharged at the outlet.
III. Structural Features
- Screen Design: V-shaped structure combining arc and straight sections, with a negative inclination angle (usually -5° to -3°) for drainage and preventing water overflow from the discharge port.
- Screen Mesh Material: Options include polyurethane screen panels, stainless steel welded stepped screen plates, or high-strength composite screen meshes, with high open area (≥33%), strong wear resistance, and service life up to 6 months or more.
- Overall Structure: The screen frame is connected with high-strength bolts, providing high rigidity and strength; the machine is compact, small in size, and light in weight, supporting pedestal or suspension installation.
IV. Technical Advantages
| Advantage | Description |
|---|---|
| High Dewatering Efficiency | High-frequency vibration (frequency up to 25~50Hz) combined with low amplitude (1~5mm) results in significant dewatering effect and low moisture content of finished product. |
| Large Processing Capacity | High processing capacity per unit area; effectively recovers fine sand above 0.075mm with recovery rate exceeding 90%. |
| Low Operating Noise | Self-synchronizing technology and optimized structural design ensure smooth operation and low noise. |
| Easy Maintenance | Modular screen design for easy installation and removal; no risk of sudden spring breakage, low maintenance cost. |
| Energy Saving & Environmental | Compared to traditional drying processes, it can reduce drying energy consumption by about 30%, lowering operating costs. |
V. Application Fields
- Aggregate Industry: Dewatering of washed sand, fine sand recovery, solving fine sand loss in wet production lines.
- Coal Industry: Coal slurry dewatering and recovery, coarse coal slime pre-dewatering and desliming.
- Mineral Processing: Dry discharge of metal/non-metal tailings, concentrate dewatering.
- Environmental Engineering: Municipal sludge dewatering, mud purification treatment.
- Other Industries: Solid-liquid separation in sugar production, salt production, papermaking, food processing, etc.