Bar screen HLT

for wastewater treatment

Cable Operated Bar Screens HKI and TGS are robust equipment designed for heavy duty applications. They are specially designed for deep and wide channels for installation in pumping stations or inlet structures of high capacity water and wastewater treatment plants. With vertical installation possibility they require less space for screening. Cable Operated Bar Screens consist of a two main part: Parts in the channel; which are bar screen, guide frame and dead plate are equipped with parts over the channel; which are chassis, discharge chute, raking and cleaning mechanism. The upper part can be both designed as stationary (HKI) or travelling (TGS) versions. Operation Principle for Stationary Cable Operated Bar Screen (HKI): In this design the upper part is connected to the lower part. The equipment waits in park position until it receives a signal from one of the channels that the pre-set differential water level is reached and it means that the screen has to be cleaned. The bar screens are cleaned by the help of a grab rake. The grab rake is lowered down to the bottom of the channel in open position and closed to carry the collected debris while going up. The collected debris is cleaned by a counter wiper when the ladle rake reaches to discharge point. Here the screenings are either removed to a container or a transporter for further processing.