Delivery Time:60 days after received your payment
Certification:CE/ISO9001/SGS

Bernoulli Automatic Self Cleaning Filter for Sealing 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. 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.

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:

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 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 ranges from 200μm to 2000μm

■ Flexible installation in the horizontal or vertical position

■ Equiped with differential pressure transmitter as d.p. instrument