Multilayer filtering device for wastewater treatment

The utility model relates to the technical field of wastewater treatment, and discloses a multilayer filtering device for wastewater treatment, which comprises a bottom plate, a pretreatment box is fixedly mounted on the outer surface of the top of the bottom plate, a water inlet pipe is fixedly inserted into the inner surface of the pretreatment box, and a sealing partition plate is movably inserted into the inner surface of the pretreatment box. A supporting block is fixedly mounted on the inner surface of the pretreatment box, a first filter screen is movably connected to the outer surface of the top of the supporting block, and a pulley is fixedly connected to the inner surface of the pretreatment box. According to the multi-layer filtering device for wastewater treatment, when too many impurities are accumulated on a first filtering plate, a sealing partition plate is pulled upwards, the first filtering plate is pulled leftwards, the first filtering plate is pushed rightwards, a scraping plate is extrude