Agricultural self - cleaning filter

The utility model discloses an agricultural self - cleaning filter, including box, filter cabin, accuse stream subassembly and level sensor, box one side is established and is strained back clear water delivery port, the accuse flow a subassembly set up in the box top is flowed the tee bend by electronic accuse and is connected sewage oral siphon, filter cabin sewage oral siphon and drain pipe respectively, the filter cabin of cylinder sets up inside the box, filter cabin has the filter screen in the surface, and inside sets up level sensor, and the below is the filter residue precipitation tank. The blowdown pipe is connected to filter residue precipitation tank below to by electronic ball valve control blowdown. Stopped up by the filter residue when the filter screen, the positive surge touches level sensor and starts the automatic cleaning machine system in the filter cabin, makes electronic accuse flow the tee bend and with the leading -in drain pipe of sewage, lets the electrical ball valve open the blow