Self-cleaning Screen Filters
Automatic self-cleaning filters for high loads of suspended solids and heavy duty applications
Flow rates : 3 up to 1800 m /h (8000 US gpm)
Filtration degrees : 800-10 micron
Water for cleaning : less than 1% of the total flow
Minimum operating pressure : 2 bar (30 psi)
- Large filtration area, reliable operating mechanism and simple construction make the SCSF filter the ideal solution for filtration of high-flow and poor quality water to very fine filtration degrees
- Robust and reliable self-cleaning mechanism to give best results in marginal operating conditions and poor water quality
- Automatic flushing according to pressure differential and/or time
- Option for continuous flushing
- Low pressure operation, suitable for 2 bar (30 psi) and lower
- No interruption of downstream flow during flushing
- Applications: Water supply systems, cooling water, wastewater treatment.
- Industrial pre-filtration treatment, irrigation system.
- Industries: manufacturing, mining, water and wastewater treatment plants, turf, agriculture, etc.
How the SCSF Filter Works
Technomax SCSF Series are automatic filters, with an electric self-cleaning mechanism. The “SCSF” filters range in flow-rates of up to 1800 m³/h (8000 US gpm), with screens designed ranging from 800-10 micron filtration degree. Inlet/Outlet ranges are available from 8”- 20” diameter.
The Filtering Process
Raw water enters from the filter inlet
- and passes through the screen
- Clean water flows through the filter outlet
- The gradual dirt buildup on the inner screen surface causes a filter cake to develop, with a corresponding increase in the pressure differential across the screen. A pressure differential switch
- senses the pressure differential and when it reaches a pre-set value, the cleaning process begins.
The Cleaning of the filter is carried out by the suction scanner
(5) which spirals across the screen, the open exhaust valves creates a high velocity suction stream at the nozzle tip which “vacuums” the filter cake from the screen. During the self-cleaning process, which takes approximately 30 seconds, filtered water continues to flow downstream.