For constant pressure circulating water filtration
Automatic backwash filter is a kind of self-cleaning filter that consists of multiple stainless steel filer elements and can continuously perform filtration for 24 hours.
The unfiltered liquid flows into the automatic backwash filter from the inlet (3), 50% of the liquid flows through the central distribution tube, moves towards the top of the filter (4) and enters filter elements from the top (5). The other part of the liquid flows into filter elements directly from the bottom of the filter (6). The unfiltered liquid enters filter elements from the upper and lower ends at the same time and flows out from the outlet after filtering (7).
When the pressure drop or time reaches the preset value (9), the automatic backwash procedure is triggered. The gear motor drives the back-flushing rotation arm (1) to backwash the filter elements in turn while the filtration continues. During backwashing, the upper end of the filter element is covered by the sliding block (2) and then the back-flushing valve opens. The differential pressure between the outside of the filter element and back-flushing outlet makes the clean filtrate reversely flush the inner surface of filter element (8). The washed down impurities are discharged through the sewage pipe.
Automatic backwash filer can effectively filter out solid particle contaminants from water and low viscosity liquids (such as rolling emulsion, etc.), so that the liquid cleanliness can meet the system operation and downstream process requirements and protect the downstream key equipment. As a result, automatic backwash filers are widely used in the following industries.
For constant pressure circulating water filtration
For ship cooling seawater filtration
For power plant cogeneration water filtration