Multi-stage purification device for urban water treatment

The utility model discloses a multi-stage purification device for urban water treatment, and relates to the technical field of sewage treatment. The device comprises a settling tank, a water inlet is fixedly connected to the top of the settling tank, a closing plate is hinged to one side of the settling tank, the end, away from a hinge point, of the closing plate is connected with the settling tank in a lock catch mode, an impurity removal assembly is installed in the settling tank, and a sewage pump is fixedly connected to one side of the top of the settling tank. The water pumping end of the sewage pump is connected with a soft glue pipe, the water outlet end of the sewage pump is fixedly connected with a conveying pipe, when the device is used, a sealing plate can be opened, and through operation of the impurity removal assembly, an internal component of the impurity removal assembly scrapes away impurities and sundries settled in the settling tank; and then the impurities are discharged from the opening o