Self-cleaning reverse osmosis water purification system

Abstract

The invention relates to a self-cleaning reverse osmosis water purification system, which comprises a pipeline connected from a water inlet to a water outlet, wherein a pre-filter, a booster pump anda reverse osmosis filter are sequentially arranged on the pipeline in the water flow direction, a pressure tank is connected to a pipeline between the reverse osmosis filter and the water outlet, andgas with set pressure is stored in the pressure tank, so that the pressure in the pipeline is changed to form water flow between the pipeline and the pressure tank, and a filter core in the reverse osmosis filter is cleaned by utilizing the water flow. Through the arrangement, reversing water flow is formed between the pressure tank and the pipeline by utilizing the adjustable pressure differencein the pipeline, and the RO membrane filter core of the reverse osmosis filter is cleaned by utilizing the water flow, so that the aim of self-cleaning the RO membrane filter core by the water purification system is fulfilled so as to automatically flush the reverse osmosis filter after the water purification system is shut down, reduce the concentrated water remaining in the reverse osmosis filter and improve the health and the taste of drinking water.

Description

technical field [0001] The invention belongs to the field of household water purification equipment filtration, in particular to a water purification system with a self-cleaning reverse osmosis filter element function. Background technique [0002] The reverse osmosis water purifier can effectively solve the problem of drinking water pollution. Its core component is the reverse osmosis filter element, which generally uses the RO membrane filter element to filter the incoming water flow through the reverse osmosis principle. In the process of using the above water purifier, the pollution of the RO membrane filter element will be caused by the concentration polarization caused by the increase in the concentration of pollutants on the surface of the RO membrane filter element. [0003] In addition, during the shutdown of the reverse osmosis water purification system, the ion concentration of the water purification side and the concentrated water side of the reverse osmosis memb...

AI Technical Summary

Problems solved by technology

During the use of the above-mentioned water purifier, the concentration polarization caused by the increase in the concentration of pollutants on the surface of the RO membrane filter will cause the problem of contamination of the RO membrane filter.

[0003] In addition, due to the large difference in ion concentration between the purified water side and the concentrated water side of the reverse osmosis membrane filter element during the shutdown process of the reverse osmosis water purification system, the impurities and dirt contained in the concentrated water side will be driven by the concentration difference. Next, the concentrated water penetrates through the RO membrane filter and diffuses to the pure water side, resulting in an increase in the conductivity of the stored water on the pure water side.

Furthermore, when the user subsequently uses the water purification system to prepare purified water, the conductivity of the first cup of purified water prepared will increase significantly, which will affect the preparation of purified water, and affect the health of the user's drinking water and the quality and taste of the prepared purified water.

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