The transverse partition in the fully automatic self-cleaning filter tank divides it into upper and lower chambers. The upper part is the clear water area, and the lower part is the muddy water area. The two are completely separated. Several stainless steel filter columns are installed on the transverse diaphragm. The raw water to be treated enters the muddy water area through the inlet, and enters the inner cavity of the filter column from bottom to top through the water distribution holes on the diaphragm. Impurities that are larger than the gaps in the filter column are retained, and the clean water passes through the gaps into the clean water area. All the liquids filtered by the filter column are combined in the clear water area, and then flow out from the outlet. When impurities accumulate to a certain thickness in the filter column, a pressure difference will be generated between the clean water area and the muddy water area. At this time, the backwash filter can be automatically controlled by the differential pressure controller to start the backwash mechanism, or the backwash system can be manually started. , remove the filter residue.

During the filtering process of the filter, 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 the pressure difference reaches the preset value, the automatic cleaning process will start: the drain valve opens, the hydraulic motor chamber and hydraulic cylinder of the main pipe assembly release the pressure and discharge the water; the pressure in the hydraulic motor chamber and the suction pipe drops sharply, due to the load Under the action of pressure, the dirt on the inner wall of the fine filter is sucked through the suction nozzle, flowed into the hydraulic motor chamber by the hydraulic motor, and discharged by the sewage valve, forming a sewage suction process. When the water flows through the hydraulic motor, it drives the sewage suction pipe to rotate, and the hydraulic cylinder piston drives the sewage suction pipe to move axially. The sewage suction device assembly completely cleans the entire inner surface of the filter screen through the combination of axial movement and rotational movement. the

The entire cleaning process will last tens of seconds. The blowdown valve closes at the end of the wash, the increased water pressure returns the cylinder piston to its initial position and the filter begins preparing for the next flush cycle. During the cleaning process, the normal filtering work of the filter is uninterrupted. We all know that the self-cleaning filter overcomes many shortcomings such as the small amount of dirt held by traditional filter products, is easily blocked by dirt, the filter part needs to be disassembled and cleaned, and the filter status cannot be monitored. It has the ability to filter raw water and automatically clean the filter element. The function, and the system supplies water continuously during cleaning and sewage discharge, and can monitor the working status of the filter, with a high degree of automation.