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.