| 摘要 |
PURPOSE: A drainage system is provided to facilitate the cleaning of a screen by using swirling water current formed in a main body. CONSTITUTION: A drainage system comprises a main body(100) and a screen(200). The screen filters rainwater detouring the main body and waste water. The main body comprises an inner space(102), an inlet port(104), and an outlet hole(106). The pollutant in the rainwater and waste water is settled down in the inner space through the detouring of the rainwater and waste water. The inlet port and the outlet port are formed in the main body respectively. The screen is installed in the outlet hole of the main body. |
