Water enters through the inlet and first passes through the coarse filter to filter out larger particles of impurities and then reaches the fine filter. During the filtration process, the fine filter gradually accumulates dirt and impurities in the water and forms a filter impurity layer. Since the impurity layer is deposited on the inner side of the fine filter, a pressure difference is formed on the inner and outer sides of the fine filter. .
When the pressure difference of the filter reaches the preset value, the automatic cleaning process will start. During this period, the continuous supply of purified water will continue, the cleaning valve will open, the pressure in the cleaning chamber and the suction device will drop drastically, and the pressure of the filter cartridge and the suction pipe will decrease. The pressure difference between the suction pipe and the cleaning chamber generates a suction force through the suction nozzle to form a suction process. At the same time, the electric motor drives the suction pipe to make a spiral movement in the axial direction. The combination of the axial movement and the rotary movement of the dirt sucker completely cleans the entire inner surface of the filter. The entire flushing process takes only tens of seconds. The drain valve closes at the end of the cleaning. The filter starts to prepare for the next flush cycle.
When the pressure difference of the filter reaches the preset value, the automatic cleaning process will start. During this period, the continuous supply of purified water will continue, the cleaning valve will open, the pressure in the cleaning chamber and the suction device will drop drastically, and the pressure of the filter cartridge and the suction pipe will decrease. The pressure difference between the suction pipe and the cleaning chamber generates a suction force through the suction nozzle to form a suction process. At the same time, the electric motor drives the suction pipe to make a spiral movement in the axial direction. The combination of the axial movement and the rotary movement of the dirt sucker completely cleans the entire inner surface of the filter. The entire flushing process takes only tens of seconds. The drain valve closes at the end of the cleaning. The filter starts to prepare for the next flush cycle.