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Grande - Model TRU-RAKE -Self-Cleaning Bar Screen System
The TRU-RAKE self-cleaning bar screen system is designed to remove debris from stormwater overflow systems, combined sewer overflow (CSO) systems and sanitary sewer overflow (SSO) systems. The TRU-RAKE self-cleaning bar screen offers an economical and effective solution for preventing floating and suspended coarse matter from entering watercourses. It is designed for installation on stormwater weirs, decanter weirs, CSO weirs and flood discharge weirs. Thanks to its modular design, the TRU-RAKE adapts to all types of overflow system and is easy to install in existing structures.
- Low maintenance
- Self-cleaning without external energy
- Opens automatically in case of blockage
- Easy to retrofit into existing installations
- Stainless steel construction
The TRU-RAKE Self-Cleaning Bar Screen System models vary depending on the bar spacing, the design water depth, the maximum acceptable head loss, the number of modules and the overall length. The models are designated as GTR. The units are modular in design with a single unit being up to 20 feet (6 m) long. The units are currently designated with asterix due to the high variety of model options.
The TRU-RAKE Self-Cleaning Bar Screen System has a standard bar opening of ½ inch (12 mm) to 2 inches (50 mm). During an overflow event, the upstream water level increase causes the float to lift the cleaning rake to its upper position before any water flows over the weir. The cleaning rake remains in this position during the entire overflow event. At the end of the overflow event, the float drops as the upstream water level decreases and using no external energy the cleaning rake is pulled through the bars removing the retained debris from the screening surface. This debris is then transported by the dry weather flow to the waste water treatment plant for disposal.
Should the bar screen become blinded with debris, the TRU-RAKE is designed to swing up and out of the flow path with the increase in hydrostatic pressure. This prevents any negative impact on the upstream water level. When the water level drops, the bar screen will return to its initial position by its own weight.
