| 摘要 |
A reverse osmosis-typed water purifier with a backflow preventing function is provided to prevent reverse current of water by osmotic pressure in a membrane filter in which the water is purified by the reverse osmotic pressure. A reverse osmosis-typed water purifier with a backflow preventing function includes a filter unit and a reverse current preventing unit. A filter unit includes a membrane(105) and a collecting pipe(110). A membrane is spirally wound on the collecting pipe having a collecting hole(112). The reverse current preventing unit blocks reverse current of purified water through the collecting hole. The reverse current preventing unit is a check valve, and can be arranged to the collecting hole. The check valve comprises a cylindrical body, a disk, and a spring. The reverse current preventing unit includes a rod(135), a blocking plate(136) and an opening plate(137). |
