Sewage suction device for cement pond seedling culture

The utility model discloses a sewage suction device for cement pond seedling culture, which comprises a pond bottom and a fixing plate, the lower surface of the fixing plate is fixedly connected with a stand column, and the bottom end of the stand column is provided with a ball body; a water pump is fixedly connected to the upper surface of the fixing plate, a water inlet pipe is fixedly connected to the input end of the water pump, and an expansion disc is fixedly connected to the bottom end of the water inlet pipe; movable rods are arranged on the outer wall of the stand column, a transverse rod is fixedly connected between the movable rods, a scraping rod is fixedly connected to the lower surface of the transverse rod, threaded columns are arranged on the upper side of the transverse rod, and threaded rings are fixedly connected to the positions, located on the outer sides of the threaded columns, of the upper surface of the fixing plate. The scraping rod is attached to the bottom of the pond, the water pu