ndustrial Cartridge Filter Housing Auto Outer  Scraping Filter   The external scraping filter can automatically remove the impurities on the outer surface of the filter screen by mechanical scraping, and can filter continuously on-line. Traditional filters are frequently cleaned manually, with large investment, heavy work and serious material waste. The electric external scraping filter can easily solve such problems by advanced self-cleaning method, always keep the filter screen clean regularly, and discharge the waste liquid containing high concentration impurities to reduce material waste. It has obvious advantages and higher efficiency when filtering water with poor water quality and viscous materials such as adhesives, resins, polymers, coatings and oils. Industrial Cartridge Filter Housing Auto Outer Scraping Filter Working Principle   The liquid flows in from the inlet, the scraper with compensation is close to the outer surface of the filter screen in the tangent way, the liquid flows inward from the outer surface of the filter screen through the filter screen, the impurities are intercepted on the outer surface, and the liquid flows out from the outlet; With the passage of time, the impurities gradually increase and the differential pressure increases. Clean the filter screen according to the set differential pressure or regularly   Industrial Cartridge Filter Housing Auto Outer Scraping Filter Cleaning Status The motor drives the scraper to rotate horizontally to clean the filter screen. When the scraper rotates, the impurities are scraped (stripped) by the scraper and flow along the filter screen to the bottom of the filter, and the impurities are deposited in the dirt collection chamber. Each cleaning consists of several strokes. After the surface of the filter screen is cleaned, the filtering capacity is restored. During cleaning, filter normally and the flow is not interrupted. Industrial Cartridge Filter Housing Auto Outer Scraping Filter Blowdown Status: After multiple cleaning cycles, when impurities accumulate to a certain amount, open the blowdown valve regularly to discharge the waste liquid containing high concentration impurities. If necessary, it can also be recycled.