Multi-Rake Mechanical Bar Screen Triple Synchronized Rake System
The Multi-Rake Mechanical Bar Screen with Triple Synchronized Rake System is a high-throughput screening solution engineered for industrial wastewater applications where continuous, uninterrupted debris removal is critical to downstream process reliability. Unlike single-rake screens that pause debris removal during the return stroke, this multi-rake design employs three independently driven rake assemblies that operate in a phased sequence controlled by a central PLC.
At any given moment, at least one rake is actively traveling upward with debris while another is descending for the next capture cycle and the third is discharging at the top platform. This phased operation eliminates intermittent debris bypass, achieving a true continuous debris removal rate that can be 2.5 to 3 times higher than a single-rake screen of equivalent channel width.
Key Features
- Triple Rake Continuous Operation: Three independently driven rakes operating in phased sequence eliminate debris bypass gaps inherent in single-rake return-stroke designs
- Independent VFD Control Per Rake: Each rake drive has its own variable frequency drive for granular speed optimization based on real-time debris loading
- Replaceable Scraper Tips: Bolt-on NBR rubber scraper tips can be replaced individually in under 30 seconds using standard hand tools
- Anti-Collision PLC Logic: Central controller monitors absolute position of all three rakes with redundant proximity sensors and software interlocks
- Load-Adaptive Speed Control: Motor current monitoring feeds real-time load data to automatically adjust rake speed for heavy debris loads
- Quick-Change Bar Rack Segments: Bar rack divided into individually removable 500 mm wide segments secured with stainless steel wedge clamps
Technical Specifications
| Number of Rakes |
3 (triple synchronized phased operation) |
| Bar Spacing |
3 mm – 50 mm, selectable per application |
| Channel Width |
500 mm – 3000 mm customizable |
| Channel Depth |
800 mm – 8000 mm customized to site |
| Rake Material |
Reinforced SS304 frame, bolt-on replaceable NBR scraper tips |
| Drive Per Rake |
Independent VFD-controlled motor-reducer, 0.55 kW – 3 kW each |
| Debris Removal Rate |
Up to 3× single-rake equivalent at equivalent bar spacing |
| Installation Angle |
60° – 85° (standard 75°) |
| Position Feedback |
Multi-turn absolute encoders on each rake drive shaft |
| Control System |
PLC with 10-inch touchscreen, data logging, and remote diagnostics |
Applications
The Multi-Rake Bar Screen excels in high-load industrial wastewater environments where single-rake screens cannot keep pace with debris accumulation. Ideal for fruit and vegetable processing plants with seasonal harvest peaks, sugarcane and sugar beet processing mills, municipal solid waste leachate treatment facilities, and tannery wastewater pretreatment systems handling heavy solids loads.
Packaging & Quality Assurance
Each Multi-Rake Bar Screen is fully assembled, aligned, and cycle-tested at the factory to verify proper phased operation of all three rake assemblies, encoder calibration, and anti-collision logic functionality. Complete test run data including torque curves and cycle timing is provided with quality documentation.
For shipping, the screen is carefully disassembled into manageable modules packed in export-grade plywood crates with clear assembly sequence labeling. Spare NBR scraper tips sufficient for two years of normal operation are included at no additional charge. Standard warranty covers 18 months from shipment.
