During the filtration process of the brush filter, the impurities in the inner layer of the fine filter gradually accumulate, and a pressure difference is formed between the inner and outer sides of the brush filter. When this pressure difference reaches the preset value, the filter will start the automatic cleaning process: the drain valve is opened, the hydraulic motor chamber and hydraulic cylinder of the main assembly release the pressure and discharge the water; the pressure in the hydraulic motor chamber and the suction pipe drops greatly, Due to the effect of negative pressure, the dirt on the inner wall of the fine filter is absorbed by the suction nozzle, and then flows into the hydraulic motor chamber by the hydraulic motor, and is discharged by the sewage valve, forming a sewage suction process. When the water flows through the filter hydraulic motor, it drives the sewage suction pipe to rotate, and the hydraulic cylinder piston drives the sewage suction pipe to move axially.
The self-cleaning filter dust collector assembly completely cleans the entire inner surface of the filter screen through the combination of axial movement and rotational movement. The entire cleaning process will last for tens of seconds. The blowdown valve closes at the end of the wash, the increased water pressure returns the hydraulic cylinder piston to its original position and the filter begins to prepare for the next flush cycle.
During the cleaning process, the normal filtration work of the filter is uninterrupted. Poolking.