Chain and Rake Monster
This highly efficient Chain and Rake Monster® is used in headworks systems and storm overflows where large concentrations of debris are expected and is normally installed in gravity fed or pumped flow systems. A series of replacable rakes are bolted to two bands of matched endless chain.
The chains are driven by sprockets fixed to the heavy-duty drive shaft running in tensioned roller bearings. They pass around a bottom guide track which avoids the necessity of sprockets and bearnings in the sewage flow. The result is greatly reduced maintenance and increased system life.
Grids can be provided in .25″ (6mm) and up bar spacing, and can be supplied as standard taper bars or rectangular bars. Grids can be extended to discharge point, or more commonly, finishing above water level and continued in stainless steel dead plate.
The debris on the rakes is removed by a pivoted wiper with a nylon blade. Drives can be rated for explosion proof environments. Screens can be supplied up to 8 feet (2.4m) wide in a choice of materials and are suitable in channels up to 25 feet (7.6m) deep.
Materials is then conveyed to the Screenings Washer Monster® for additional washing, dewatering and compacting. The SWM has helped some treatment plants reduce the volume/weight of screenings by up to 95%.
During screen operation JWCE’s optional Monster Blind Diagnostic System™ monitors, calculates and displays the percent of screen “blinding”. There are three significant benefits of this patent-pending control system. First, MBDS allows the screen or screens to automatically operate at optimal efficiency. Second, it continuously updates the control room on the screen’s precise performance so upsets (for example heavy grease loading) can be detected and dealt with early on before the problem can grow. And finally, MBDS can inform operations when the cleaning brush or spray nozzles need adjustment. Monster Blind Diagnostic System is always watching the screens so you have less to worry about.
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Features and Benefits
Heavy Duty Stainless Steel Roller Chains
- Stainless steel construction ensure long life
- No sprockets or shafts in the flow, minimizing wear
- Able to handle large concentrations of debris
- Suitable for headworks and storm overflow duty
Stainless Steel Bar Rack
- Curved sill plate at base of grid forms accurate path for rakes
- Available in a variety of bar spacing sizes, from 6mm and up
- Efficient debris removal by pivoted wiper with nylon blade
- Optional multi-speed operation allows user to set rake speed
Ease of Maintenance
- Easy to lift access covers
- Easy to reach assembly allows simple fine tuning
- Optional pivoting frame allows access to the entire unit from the operating floor level. The pivoting screen clears the discharge area completely making it even more convenient for operations and maintenance staff.
Specifications:
- Widths from 2′ to 8′ (.6m to 2.4m)
- Depths to 25′ (7.6m) and greater
- Head of screen is completely enclosed above grade level with stainless steel guards and can be designed to fit custom heights, including low profile
- Hinged cover provides easy access for maintenance
- Can be installed from 75° - 90° degrees inclination
