Flushing structure, water purifier and flushing method

Abstract

The invention provides a flushing structure, a water purifier and a flushing method. The flushing structure comprises a high pressure pump, a reverse osmosis filter element, a first electromagnetic valve and a second electromagnetic valve; a concentrated water outlet of the reverse osmosis filter element is communicated with an inlet of the high pressure pump to form a loop; a Venturi pipe is arranged on a loop portion on which a concentrated water outlet of the reverse osmosis filter element is connected with a water inlet of the high pressure pump; the Venturi pipe comprises a water inlet and a water outlet, and a detergent inlet is arranged between the water inlet and the water outlet; and a detergent source is communicated with a detergent inlet of the venturi pipe by virtue of the second electromagnetic valve. The flushing structure of the invention can automatically circularly clean a reverse osmosis membrane, and can prolong the service life of the reverse osmosis filter element.

Description

technical field [0001] The present invention relates to a structure for a water purifier, a water purifier using the structure and a method for using the structure. Background technique [0002] Reverse osmosis is a process that uses a pressure higher than the osmotic pressure as the driving force to separate water molecules from solutes from water by using the selective permeability of selective membranes that can only pass through water but not solutes. The reverse osmosis water purifier is a machine that mainly uses the principle of reverse osmosis for water treatment. Reverse osmosis water purifier (RO machine) is a kind of household drinking water equipment that appears on the market, but its appearance has been well received by more and more consumers, especially favored by water machine users, because it eliminates the need to buy barrels The cost of filling water and the cumbersomeness of transporting bottled water. [0003] At present, reverse osmosis water purifi...

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Problems solved by technology

[0003] At present, reverse osmosis water purifiers are widely used to purify raw water, and remove bacteria, viruses and heavy metals in the water through reverse osmosis membranes. However, calcium and magnesium ion crystals gradually form on the surface of the membrane after long-term use, causing membrane blockage; especially Some water-saving reverse osmosis water purifiers, in order to increase the maximum water production rate, increase the waste water ratio, resulting in extremely high concentrations of calcium Ca and magnesium Mg ions at the raw water end of the reverse osmosis membrane, and it is easier to precipitate crystals, resulting in reverse osmosis membrane Blockage phenomenon

[0004] Although most product manuals warn consumers to replace the reverse osmosis filter element regularly, the replacement period specified in the manual is often much longer than the actual replacement period. The reason is that the user has no equipment to monitor the water quality, and the second is that the manufacturer is worried that the replacement period is short. can not accept

At the same time, it is difficult for users to accurately remember the replacement time of each time. In addition, the replacement of the reverse osmosis filter element is troublesome and costly. In fact, it is difficult for a large number of users to replace the reverse osmosis filter element in time, which makes it difficult to ensure the effect of the water purifier.

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