Automatic Backwash Hydraulic Screen Filter / Before Precision Filter

Product structure

1:Water inlet
2.Screen
3:Automatic drain valve
4: Hydraulic piston
5:Suction nozzle
6:Axis
7:Water outlet
8:Hydraulic motor

Product principle
The water flows through the screen and the particles are retained on the inside of the screen of the filter element. The filtered water then flows out through the outlet.
Self-cleaning mode can be started by pressing, timing or manual three ways, following the principle of pressure difference.
When the internal and external pressure difference reaches the set value, the self-cleaning mode starts.Drain pipe hydraulic valve open, sucking the scanner to produce negative pressure suction nozzle inside, absorbing impurities, at the same time sucking scanner in under hydraulic motor along the inside surface mesh do reciprocating screw, movement, no cleaning blind area, impurities by the discharge outlet.
The cleaning time of self-cleaning filter is set by the controller in advance, the drain valve is closed after cleaning, and little water loss in cleaning process.


Technical parameters

A single maximum flow capacity is up to 4000m3 / h
Wide filtration range:screens from 4000 to 20 microns
Working pressure(min)≥0.18Mpa
Working pressure(max)≤1.6MPa(customized is available)
Working temperature ≤65ºC
Power supply: 220 v / 50 Hz (Customized is availabel)
Cleaning method: suction
Adjustable cleaning time: 10-200 seconds

Filter material

Shell: carbon steel, 304 stainless steel, 316L stainless steel
Screen: 304 stainless steel, 316L stainless steel
Drain valve, cast iron,copper,stainless steel,PVC,nylon
Controller: PVC, aluminum
Seal ring: EPDM rubber
Suction: stainless steel, PVC

DLAF200 series self-cleaning filter specification table