Rainwater collecting device for sponge city

The utility model relates to the technical field of sponge cities, and discloses a rainwater collecting device for sponge cities, which comprises a water storage tank, a collecting tank is arranged in the water storage tank, a water inlet is arranged at the top of the water storage tank, a filter screen is fixedly connected onto the inner wall of the water storage tank, a push rod is arranged in the filter screen, and a water outlet is arranged on the push rod. A floating ball is fixedly connected to the lower end of the push rod and placed on the inner bottom wall of the water storage tank. According to the rainwater collecting device for the sponge city, due to the fact that breeze can drive fan blades to rotate by 180 degrees, then a rotating rod is driven to rotate, resetting of the rotating rod is facilitated, when no wind power exists, two baffles are matched with a water outlet and the water outlet end of a water pipe correspondingly, and irregular irrigation on potted plants is facilitated; the irriga