Widely used for primary filtering, Siwa grates are tailored to the channel in width and depth, with different openings and cleaning systems. Of the “SIERRA-STEP” type, with rotating share, or bars with cleaning system. The openings can be from 3 to 120 mm.
Safety System Against Traffic Jams
The equipment has two ways to detect blockages. On the one hand, an inductive sensor registers the increase in torque on a damped arm and sends the signal to the controller. On the other hand, the variable speed drive detects the increase in intensity and sends a signal to the controller.
In both cases, the controller immediately stops the comb and reverses until the second comb clears the obstruction. If the obstruction is not released, the action is repeated a certain number of times, and if this is not achieved, the equipment stops and reports the failure.
Solids Extraction System
An articulated arm sweeps the solids from the comb when it is at the top and induces them into a tray that guides them to a basket.
Transmission
The equipment has two pairs of gear wheels. The upper wheels are driven directly by the gear motor and are linked to a solid axle that rotates on bearings. The lower wheels are linked to the upper ones through a chain which in turn is responsible for moving the combs. The lower wheels are independent and rotate on heavy-duty bearings.
Product photos
