Automatic sewage filter applied to remove all impurities, water supply systems, the product can be filtered and sewage in the case of downtime. Automatic sewage filter works: 1, the normal filter: In normal operation the steering valve is open, the drain valve is closed. Flow from the inlet into the filter tube interior, filtered through a mesh strainer into the cylinder outside the exit filter into the pipeline system. Impurities and dirt left in the filter cartridge inside. 2, the normal flushing sewage: normal working quickly open the drain valve, filter housing pressure transient decline, causing the filter drum vibrates, the vibration stopped falling loose tube adhered to the inside of the filter impurities and dirt, and with water from outfall discharge. 3, the backwash of sewage: the steering valve closed, drain valve open, water forced through the interior of the filter from the inlet section of the cylinder through a mesh strainer into the cylinder outside, most of the water from the outlet into the piping system, and from a part of the water filter cartridge external impurities collected through the mesh into the transition network segment inside of the cylinder, the cylinder of the filter backwash, reaching from external flushing filter cartridge stuck in the inside of the filter cartridge impurity effect, to clean the filter cartridge purposes. Impurities and contaminants discharged from the outfall. Related information Browser http://www.ryjdsb.com