Sub vertical cable flat screen for large plants

GGPSC

CATEGORY WATER INTAKE
TYPOLOGY SCREENS

WHEN TO USE IT

The GGPSC-type sub-vertical cable screen for large systems meets the needs of macro-screening in intake plants and large plants of sewage or industrial wastewater treatment, and is particularly suitable for large channels.

HOW IT IS MADE

It essentially consists of: a sturdy frame made of press-bended steel sheets; a set of bars constituting the filter screen and fixed to the channel by means of suitable support crosspieces; a steel pendulum bucket with comb sliding on guides by means of wheels; a bucket-handling system consisting of three steel cables, a cable drum and relative supports; a pendulum gearmotor for the movement of the bucket keyed on the shaft of the drum; an electric actuator to manage the rotation of the bucket through the third cable; a cleaning system of the bucket for discharging the screened material, installed in the upper part of the machine.

HOW IT WORKS

The material deposited on the bars of the screen is removed by the bucket as it runs upwards. The bucket is discharged and cleaned at a suitable distance from the upper end-run. This is possible thanks to the combined action of its rotation, guided by the dedicated electric actuator and its particular geometric shape. At the end of the upward run, the bucket stops for a pre-established time and then starts the downward run. This occurs while remaining at a distance from the bars thanks to the combined action of the movement actuator and a suitable guide system. At the end of the downward run the bucket stops again and then resumes its upward run, gently approaching the screen thanks to the action of the actuator dedicated to the rotation of the bucket. Protection against overloading is guaranteed by standard dynamometric devices or, upon request, by electronic absorption limiters. The simplicity of its design and the completely automatic cleaning, as well as the absence of mechanical parts immersed in water, allow this screen to always guarantee high performance and reliability over the time.