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Help CenterLake Water Bernoulli Filter Continuous Operation 200m to 2000m Degree Ranges
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Certification:CE/ISO9001/SGS
Bernoulli Automatic Self Cleaning Filter for Pure Water 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. The AF Series which does not only use the backflush effect caused by the simple pressure drop to outside lower pressure than the working pressure – the Bernoulli self cleaning backflush filter creates it ́s own backflush effect in the gap between the cleaning disc and the strainer insert. The insert can be made out of wedged wire profiles or a perforated plate. In some special applications also stainless steel or alloy mesh is used. The wedged wire filter screen can be made out of stainless steel SS 316 or materials like super duplex or duplex SS. If perforated plate is used for filter degrees over or 1 mm than as well stainless steel and also duplex Ss or titanium perforated plates are used. 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.
Working Principle
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 | ||
Benefits for the operator:
• Flow rates of up to 7,500 m3/h in a single unit
• Working pressure is possible from 0.3 bar to 25 bar
• Continuous operation
• Minimal differential pressure (Δp) during continuous operation (even below 0.1 bar)
• Short, adjustable flushing time and minimum pressure drop in the system during fl ushing
• Small variable flush rates
• Positive energy balance due to low differential pressure during fi ltration
Applications:
Typical Applications water treatment prefiltration, circulating cooling system, heat exchanger protection, spraying nozzle protection, ballast water treatment system, ultrafiltration membrane protection
Applicable Liquids underground water, sea water, lake water, river water, circulating cooling water, sewage water, process water, cleaning water
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 ba
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