| 摘要 |
A water purification device, comprising a first pressure cylinder (10), a second cylinder body (12), a first connecting piece (15) and a second pressure cylinder (13) arranged sequentially from bottom to top, and also comprising a first cylinder body (11) arranged within the second cylinder body (12), an ultrafiltration membrane being placed within the first cylinder body (11). The first pressure cylinder (10) and the second pressure cylinder (13) are both open at one end and provided with a through-hole at the other end. The first cylinder body (11) and the second cylinder body (12) are both open at both ends and arranged to have a hollow shape. The second cylinder body (12) is provided with a water inlet (121) in communication with a first water flow channel (123) formed between the first cylinder body (11) and the second cylinder body (12). A water outlet pipe (122) in communication with the first cylinder body (11) is inserted into an outer wall of the water purification device. When it is necessary for the ultrafiltration membrane to be cleaned, a water flow is guided from a second through-hole (131) on the second pressure cylinder (13) into the water purification device, and stains remaining in the ultrafiltration membrane are flushed away under the effect of the water pressure, preventing the ultrafiltration membrane from being clogged and scrapped as a result. The service life of the ultrafiltration membrane is increased, and water purification costs are reduced. |
