Hollow fiber ultrafiltration membrane water purifier and cleaning method thereof

Abstract

The invention relates to a hollow fiber ultrafiltration membrane water purifier comprising a shell, a control mechanism, a coil, a cleaning slide block and a hollow fiber ultrafiltration membrane, wherein the cleaning slide block is fixedly connected with the hollow fiber ultrafiltration membrane into a whole; and a water producing port and a water inlet are arranged on the shell. Water to be filtered enters the water purifier from the water inlet, and after pollutants in the water are adsorbed by the hollow fiber ultrafiltration membrane, purified water flows out of the water producing port, therefore, the water purifier achieves the effect of water purification. Because an electromagnetic transmission mechanism is formed from the cleaning slide block and the coil, when the water purifier is cleaned, the coil is switched on to alternate voltage so that an alternating magnetic field is generated, the cleaning slide block drives the ultrafiltration membrane to do a reciprocating motion under the action of the alternating magnetic field so that the pollutants on the ultrafiltration membrane are removed, therefore, the purpose of cleaning is achieved. By adopting electromagnetic transmission, the cleaning method has simpler and more direct cleaning process, and because the filtration membrane is a bidirectional spiral hollow fiber ultrafiltration membrane, the hollow fiber ultrafiltration membrane water purifier has good filtration effect and high efficiency, and the method can be widely applied to cleaning the hollow fiber ultrafiltration membrane water purifier.

Description

【Technical field】 [0001] The invention relates to a water purifier and a cleaning method thereof, in particular to a hollow fiber ultrafiltration membrane water purifier and a cleaning method thereof. 【technical background】 [0002] The current household ultrafiltration water purifiers mostly use hollow fiber membranes to filter out tiny suspended solids, colloids, particles, bacteria and other substances in the water, and the filtered water can be directly drunk. [0003] Hollow fiber membranes are generally cleanable and reusable. There are mainly two ways to restore the membrane flux of hollow fiber membranes: one is chemical cleaning, and the cleaning effect is achieved by soaking in chemicals and chemically reacting with the dirt on the membrane. This cleaning method is complicated, and the frequent use of chemicals will also have a certain impact on the service life of the membrane material. It also requires supporting facilities and has high requirements for the use e...

AI Technical Summary

Problems solved by technology

[0003] Hollow fiber membranes are generally cleanable and reusable. There are mainly two ways to restore the membrane flux of hollow fiber membranes: one is chemical cleaning, and the cleaning effect is achieved by soaking in chemicals and chemically reacting with the dirt on the membrane. This cleaning method is complicated, and the frequent use of chemicals has a certain impact on the service life of the membrane material, and it requires supporting facilities and has high requirements for the use environment. Therefore, chemical cleaning methods are mainly used in industrial engineering projects.

[0004] The other is a physical cleaning method, such as the cleaning method used in the patent with the authorized announcement number of CN201423368 and the patent with the application publication number of CN 101757855A. The pollutants attached to the membrane are flushed forward or reverse to make them fall off to achieve cleaning. effect, but this kind of cleaning effect is poor, the recovery percentage of membrane flux after cleaning is low, and it is difficult to meet the normal water demand

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