ZPG automatic backwashing filter overcomes many shortcomings of traditional filtration products such as small dirt-holding capacity, susceptibility to dirt clogging, filtration part needing to be disassembled for cleaning and inability to monitor the filter status, etc. It has the function of filtering raw water and automatically cleaning and discharging the cartridge automatically, and the system does not interrupt water supply when cleaning and discharging, and it can monitor the filter's working status, and the degree of automation is very high. The backwashing filter can be installed vertically, horizontally, inverted in any direction and at any position, and can be used for water filtration in various industries such as industry, agriculture, municipal power, electronics, medicine, food, printing and dyeing, construction, steel, metallurgy, paper making and so on.