automatic self-cleaning filter are applicable for harsh operation conditions and can be equipped with the mesh of 25-3500 micron and the caliber of 2"-36" according to different use requirements.
When the filter element is blocked, the back-flush swivel arm
back-flushes the filter elements group by group, and automatically
cleans the filter element through differential pressure control and
timing control. When impurities in the filter accumulate on the
surface of the filter element, causing the pressure difference
between the inlet and outlet to increase to the set value, or when
the timer reaches the preset time, the electric control box sends a
signal to drive the back-flushing mechanism. When the back-flushing
suction cup port is opposite the inlet of the filter element, the
sewage valve opens. At this time, the system relieves pressure and
drains, and a negative pressure area with a pressure relatively
lower than the water pressure on the outside of the filter element
appears on the inside of the suction cup and the filter element,
forcing part of the clean circulating water to flow into the inside
of the filter element from the outside of the filter element. And
the impurities adsorbed on the inner wall of the filter element are
back-flushed into the tray with the water and discharged from the
sewage valve. The specially designed filter screen produces a spray
effect inside the filter element, and any impurities will be washed
away from the smooth inner wall. When the pressure difference
between the inlet and outlet of the filter returns to normal or the
timer setting time ends, the motor stops running and the electric
sewage valve closes. In the whole process, the slurry flows
continuously, the back-flushing consumes little water, and the
continuous and automated production is realized.
