A reverse osmosis water purifier and a washing method for a reverse osmosis filter element thereof

Abstract

The invention discloses a reverse osmosis water purifying machine and a flushing method of a reverse osmosis filter core of the reverse osmosis water purifying machine. The reverse osmosis water purifying machine comprises a filtering part, a water purifying part, a concentration water part, a reverse osmosis filter core and an electric control device, wherein the filtering part is output in two paths through the reverse osmosis filter core; one path is output to the pure water part; the other path is output to the concentration water part; the filtering part is provided with a pressure regulating device and a water pressure sensor; a water flow switch valve is arranged on the concentration water part; the electric control device is respectively and electrically connected with the pressure regulating device, the water pressure sensor and the water flow switch valve The reverse osmosis water purifying machine has the advantages that the electric control device detects the water pressure condition of the filtering part according to the water pressure sensor; the reverse osmosis filter core is automatically flushed through controlling the pressure regulating device and the water flow switch valve; the pressure regulating device can automatically regulate the water flow water pressure, so that when the sufficient water flow water pressure is ensured for performing flushing on the reverse osmosis filter core, the salt content of the surface of the filter core film can be reduced in the short flushing time; the curing salt attached onto the surface of the film can be easily flushed away; therefore the reverse osmosis water purifying machine has the advantages that the water resources are saved; the flushing effect is greatly improved.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a reverse osmosis water purifier and a washing method for a reverse osmosis filter element thereof. Background technique [0002] In recent years, water purification products have attracted more and more attention from consumers as health products, and the water purification industry has also developed rapidly; especially reverse osmosis water purifiers are the mainstream of domestic household water purifiers, in order to ensure reverse osmosis The service life of the filter element. During use, the membrane surface of the reverse osmosis filter element must be continuously flushed to reduce the salt concentration on the membrane surface of the reverse osmosis filter element and slow down the clogging caused by scaling on the membrane surface. [0003] Such as figure 1 As shown, it is an example of the flushing of a reverse osmosis filter element of an existing water pur...

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Problems solved by technology

[0004] However, the flushing scheme of the above-mentioned traditional reverse osmosis filter element still has the following disadvantages: since the water outlet is completely open, a large water pressure cannot be established, and the water flow is relatively slow. The salt content on the membrane surface of the filter element needs to be reduced by a long flushing time, and the solidified salt attached to the membrane surface is not easy to wash away. Therefore, this flushing scheme not only wastes water, but also has a poor flushing effect.

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