The wastewater screen consists of a unique set of rakes assembled into a rotating screen chain. Driven by a motor and gearbox, the rake chain rotates against the direction of the water flow.
When the rake chain reaches the upper part of the equipment, the guiding action of the sprockets and curved tracks causes a relative self-cleaning movement between each set of rakes, allowing most of the solid material to fall off due to gravity. The remaining debris is then cleaned off the rakes by the reverse movement of a cleaning device.
The rake chain, in the direction of water flow, is similar to a screen. The spacing between the rakes mounted on the rake chain shaft can be selected according to the operating conditions. After the rakes separate the solid suspended matter from the fluid, the water can flow through freely. The entire working process is continuous, but can also be intermittent.
