| 摘要 |
PURPOSE: An automatic flow control device is provided to prevent the inflow of the adulteration such as leaves and plastic bags into an intercepting sewer. CONSTITUTION: An automatic flow control device comprises a flow rate control pipe, a lower closing part(200) and an upper closing part(300). The flow rate control pipe is connected to one side of an intercepting sewer of a rainwater chamber. The upper and lower closing parts open and close the lower part of the flow rate control pipe according to the water lever change due to the inflow of sewage and rain into the rain chamber, respectively. |
