| 摘要 |
The present invention relates to a sink drainage device. According to an embodiment of the present invention, a joining member for a drainage tank is joined and fixed to the drainage tank so that the drainage tank does not rotate and the drainage tank is mounted on the top of a sink by the joining member. The sink drainage device is equipped with a backflow prevention device which is latched on the drainage tank to prevent the drainage tank from being separated by upward pressure. |
