Shanghai agricultural irrigation automatic cleaning filter: single filter flow rate of 25-9300t/h, can be used in parallel with multiple units. Adopting industrial single-chip PLC automatic control, backwashing can be controlled according to pressure difference or timing, and manual forced cleaning can be carried out. It can also be cleaned even when powered off. Application scope: Cooling water treatment, supplementary water treatment, air conditioning system; Can filter river water, lake water, surface water, purified water, and groundwater; Industrial recycling water treatment; Irrigation and white water filtration in the paper industry.