What is the Working principle of Auto Backwash Filter
The Auto Backwash Filter is mainly composed of a cylinder body, a stainless steel filter screen, a butterfly valve and a sewage discharge device. The Auto Backwash Filter can make the industrial sewage meet the waste water discharge standard, which can effectively protect the environment, and at the same time, the sewage can be treated to the standard that can be reused.
The automatic backwash filter is a kind of filter that directly intercepts impurities in the water, removes suspended solids and particulate matter in the water body, reduces turbidity, purifies water quality, and reduces system fouling, algae, rust, etc. equipment to improve water quality and protect other equipment from working properly.
The water enters the self-cleaning filter body from the water inlet. Due to the intelligent (PLC, PAC) design, the system can automatically identify the degree of impurity deposition and automatically discharge the sewage by the signal of the blowdown valve.
The working principle of the Auto Backwash Filter is that the water enters from the inlet, first through the coarse filter to filter out larger particles of impurities, and then to the fine filter. During the filtration process, the fine filter gradually accumulates dirt and impurities in the water to form a filter impurity layer. Since the impurity layer accumulates on the inner side of the fine filter, a pressure difference is formed between 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 time, the supply of clean water will continue to flow, the cleaning valve will be opened, and the water pressure in the cleaning chamber and the sewage suction device will drop significantly. The pressure difference generates a suction force between the suction pipe and the cleaning chamber through the suction nozzle, forming a sewage suction process. At the same time, the electric motor drives the sewage suction pipe to make a spiral motion in the axial direction. The combination of the axial movement and the rotational movement of the dust collector completely cleans the inner surface of the entire filter screen. The entire flushing process takes only tens of seconds. The drain valve closes at the end of the cleaning. The filter begins to prepare for the next flush cycle.
Any requirements, contact us now!
Grace
Email:grace@filtrationchina.com
Mobile/Whatsapp/WeChat：+86 17269571160
