| 摘要 |
In a water tank with an spiral water inlet pipe for separating the sand with particle characteristics or suspended materials in the underground water to let them flow into, the spiral water inlet pipe comprises: an external pipe which is placed to be inclined to one side when viewed from the side surface of the outer circumferential surface of the top end, which has a side surface inflow pipe through which underground water pumped from the outside flows in, and an outlet for discharging foreign substances to the bottom at the bottom end; an internal pipe inserted into the external pipe from the top thereof by a certain depth; a delivery plate which has a guide wing for connecting the outer circumferential surface of the internal pipe and the inner circumferential surface of the external pipe in a spiral shape and which allows the underground water flowed through the side surface inflow pipe, to move downward by rotating; multiple internal wall inducing plates protruding from the inner circumferential surface of the external pipe at the bottom of the delivery plate to the inside to induce the particle sand or the suspended materials to the bottom end of the external pipe; and an water outlet unit at the top end of the internal pipe to allow the underground water to flow into the water tank toward the sides. |
