Multi filter automatic backwash filter DLSF

The DLSF multi filter automatic backwash filter is a new generation backwash filtration system that integrates multiple filter elements. When the filter elements become clogged, the unique backwash arm backwashs them one by one. When impurities accumulate on the inner 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 backwash mechanism. When the backwash suction cup port is aligned with the inlet of the filter element, the drain valve opens, and the system releases pressure and drains water. A negative pressure zone with a relative pressure lower than the water pressure outside the filter element appears on the inside of the suction cup and filter element, forcing some of the clean circulating water to flow from the outside of the filter element into the inside of the filter element. Impurities and particles adsorbed on the inner wall of the filter element flow into the tray with the water and are discharged from the drain valve. The specially designed filter creates a jet 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 set time ends, the motor stops running and the electric drain valve closes. Throughout the entire process, the material does not stop flowing, and backwashing consumes less water, achieving continuous and automated production (controlled by PLC or DCS).

The DLSF multi filter automatic backwash filter has outstanding advantages compared to ordinary mesh self-cleaning filters. It has a single machine with a large filtration area (180000 cm2), a single machine with a large flow rate of up to 10000 m3/h, a small backwash water consumption (only 25 L), and can finely filter at low surface flow rates. It has high reliability and can withstand harsh water quality, such as oily sludge impurities, soft viscous impurities, high impurity content, and a small amount of hair and fiber impurities.