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Help CenterPure Water Filter For Groundwater Filtration , Industrial Filtration Equipment Self Cleaning
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Certification:CE/ISO9001/SGS
Automatic Self Cleaning Bernoulli Filter AF Seires for Groundwater and Freshwater Filtration
Description
The AF Series Bernoulli Self-cleaning Filter ( AF Filter for short ) is designed for automatic continuous filtration of water in the pressurized systems. AF Filter removes debris and particles from natural water sources such as sea water or river water. It is the ideal solution for the coarse water filtration ranging from 200μm to 2000μm. The AF filter works in Bernoulli Effect Principle, which leads to the simple and reliable filtering operation. It cleans the filter screen with surface cross flow and the back-flushing flow, which brings higher particle removal efficiency than the conventional brush filter. Many particles larger than the screen aperture are extruded through the screen when a brush filter is brushing and cleaning.
The filter screen of AF Bernoulli Filter is back-flushed d by the cleaning disc inside, which is mounted on the piston rod driven by the pneumatic cylinder. When the cleaning action triggered, the disc moves into the filter screen and the water passes through the gap between the disc and the filter screen inner surface. Flow velocity is accelerated when the water passses the gap, while the static pressure around the gap is reduced because of the Bernoulli Effect Principle. Around the disc edge, the vacuum effect of lower static pressure back-flushes the filter screen inside surface with the filtered water.
Bernoulli Effect Cleaning Principle
The filter screen of AF Bernoulli Filter is back-flushed d by the cleaning disc inside, which is mounted on the piston rod driven by the pneumatic cylinder. When the cleaning action triggered, the disc moves into the filter screen and the water passes through the gap between the disc and the filter screen inner surface. Flow velocity is accelerated when the water passses the gap, while the static pressure around the gap is reduced because of the Bernoulli Effect Principle. Around the disc edge, the vacuum effect of lower static pressure back-flushes the filter screen inside surface with the filtered water.
Specifications:
| Filter Main Type | S Series | G Series | R Series |
| Control Mode | D.P. and time mode | ||
| D.P. Instrument | differential pressure transmitter | ||
| Filter Screen Material | 304/316L/duplex 2205 | ||
| Housing Material | 304/316L/duplex 2205/CS | ||
| Flushing Valve | Pneumatic butterfly valve | ||
| Power Supply | 110V/220V/380V/440V AC | ||
| Largest Removable Particle | 6mm | ||
| Housing Seal | NBR | ||
| Compressed Air Supply | 0.6Mpa clean and dry compressed air | ||
| Working Pressure | 30Kpa | ||
| Filtration Rating | 200-2000μm | ||
| Design Pressure (Mpa) | 0.6/1.0/1.6/2.5 | ||
| Design Temperature | 80℃ | ||
| Flowrate Range | 30-6500 m3/h | ||
| Cleaning Pressure Drop | 11Kpa | ||
| Inlet and Outlet Size | DN65-D800 | ||
| Piston Rod Material | 316L | ||
| Piston Rod Seal | PU | ||
Applications:
• Biomass power stations • Coal power stations
• Gas power stations • Nuclear Power stations
• Surface water filtration • Industrial water filtration
• Cooling circuits/water treatment • Ballast water fi ltration
• Marine • Offshore
• FSRU • REGAS
TECHNICAL FEATURES AND ADVANTAGES
■ Only two moving parts (the cleaning disc and the flushing valve )
■ Simple and reliable design structure, very easy to open for maintenance
■ Non-contact back-flushing cleaning, no particle larger than the screen aperture extruded through the filter screen
■ Consistant low pressure drop (<11Kpa) when the filter screen is clean or dirty
■ Very low working pressure requirement down to 30Kpa
■ Wide flowrate ranging from 30 to 3000 m3/ h with one single filter housing
■ No filtration interruption when back-flushing
■ Filtration degree ran
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