Mechanical Screen

    Multi-raked, chain operated screens which are generally used as coarse and fine screens for medium and large sized wastewater treatment plants.  mainly consists of bar screens, a frame and a discharge chute which is equipped with multi-rakes.

 use a stationary screen field with openings ranging from 3 to 25 [mm] or wider, depending on customer preference. High screenings discharge capacity and low head loss is achieved by the help of the multi-rakes. It is proper equipment for full automatic removal of solids from all kinds of water and wastewater.

Spaced steel bars are used to catch coarse and even fine debris. Debris is removed from the screen field periodically by a continuous traveling rake bar screen. These traveling rake bars may be activated by a timer, run continuously or run with the signal from a level sensor.

Each rake bar is mounted onto a chain on both sides of the screen frame. The rake bars’ teeth engage between the bars of the screen field and comb debris upward where the debris is removed mechanically and discharged through the outlet chute into a screw/hydro/belt conveyor which in turn conveys the screenings to a screw compactor.