Automatic self-cleaning hydraulic drive filter principle

Water enters the filter from the water inlet, first passes through the coarse Filter Element to filter out impurities of larger particles, and then reaches the fine filter. After the fine particles are filtered out through the fine filter, clear water is discharged from the outlet. During the filtration process, 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 fine filter. When this pressure difference reaches a preset value, the automatic cleaning process will start: the blowdown valve opens, the hydraulic motor chamber and the hydraulic cylinder of the main assembly will release the pressure and discharge the water; the pressure in the hydraulic motor room and the suction pipe will drop significantly due to the negative pressure. Pressure, through the suction nozzle to suck the dirt on the inner wall of the fine filter, the hydraulic motor into the hydraulic motor room, discharged by the sewage valve to form a suction process. When the water flows through the hydraulic motor, it drives the suction pipe to rotate, and the piston of the hydraulic cylinder drives the suction pipe to make an axial movement. The suction device assembly completely cleans the inner surface of the filter mesh through the combination of the axial movement and the rotary motion. The entire cleaning process will last for tens of seconds. The blowdown valve closes at the end of the wash. The increased water pressure causes the hydraulic cylinder piston to return to its initial position and the filter begins to prepare for the next flush cycle. During the cleaning process, the filter works normally without interruption.