WATER STORAGE TANK

摘要

A water storage tank is disclosed. The water storage tank, according to an embodiment of the present invention, comprises: a tank body which has first and second water entrances where water flows thereinto/therefrom; and a bladder which is formed inside the tank body to be connected to the first water entrance and allows the water to flow out of/into the tank body through the second water entrance, or allows the water to flow into/out of the tank body through the first water entrance, wherein the bladder can have a pole member therein.