| 摘要 |
PURPOSE: A drain bad smell leak preventing device is provided to prevent damage to the device and prevent the counter flow of the accumulated sewage to the ground from the drain by covering a drain opening an inlet cove. CONSTITUTION: A drain bad smell leak preventing device comprises an odor prevention film(21) and an odor prevention part(20). The odor prevention film is arranged to be tilted toward the horizontal plane. A framework of the odor prevention film has a cylindrical body having open top and bottom. The odor prevention part is installed in order to block up upward and downward gas flow through the cylindrical body. |
