JPH0482090U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the rainwater storage device according to the present invention, FIG. 2 is a perspective view of a cylindrical float, and FIG. 3 is a schematic diagram of the main parts of FIG. 1 when the water level rises. FIG. 4 is a diagram corresponding to FIG. 1 of a conventional example. 1...Rainwater basin, 2...Inverted conical bottomed basin,
5... Inlet, 7... First outlet, 9... Second outlet, 10... Discharge pipe, 11... Overflow pipe, {20... Water stop plate, 21... Float} (Flow rate adjustment Means), 23... Cylindrical float.

Claims (1)

[Scope of utility model registration request] A first outlet to the sewer pipe is provided on the side wall of the main body of the rainwater basin, the inner peripheral surface of the bottom of which has a substantially inverted conical shape, and a second outlet to the storage tank located higher than the first outlet is provided in the side wall of the main body of the rainwater basin. a rainwater inlet, and the first outlet includes a discharge pipe whose lower end opens at a position maintaining a predetermined gap in the center of the inner circumferential surface of the bottom, and an overflow pipe whose upper end opens. and a rainwater storage device having two branched rainwater storage devices, the second outflow port being provided with a flow rate adjustment means configured to be able to open from a blocked state in response to a rise in the water level in the drain pipe, and the second outlet portion being provided with a flow rate adjusting means configured to be able to open according to a rise in the water level in the drain pipe from a blocked state. A cyclone-type rainwater storage device characterized by being provided with a cylindrical float member having an inverted cone-shaped lower part that slides and floats up and down depending on the weather.