Reverse osmosis water purification machine-intelligent pure water forward/reverse-alternate flushing water-saving system and method

Abstract

The invention discloses a reverse osmosis water purification machine-intelligent pure water forward / reverse-alternate flushing water-saving system and method. The reverse osmosis water purification machine-intelligent pure water forward / reverse-alternate flushing water-saving system comprises an intelligent water monitor, a water inlet solenoid valve, a first intelligent valve, a second intelligent valve, a third intelligent valve, a first check valve, a second check valve and an intelligent controller, wherein the first intelligent valve comprises a flushing valve and a wastewater ratio valve. The system is characterized in that a pressure barrel and a pure water outlet of a reverse osmosis membrane set form a reverse flush channel through a high-pressure switch and the second intelligent valve; and the pressure barrel, high-pressure switch, third intelligent valve, second check valve and a raw water inlet of the reverse osmosis membrane set form a forward flush channel. The forward flush and reverse flush are performed alternately. The system implements the purified water / concentrated water ratio of 1:1; and the pure water performs forward / reverse flush on the RO (reverse osmosis) membrane and dilutes and removes organic colloids, inorganic salts and the like on the surface layer of the RO membrane, thereby prolonging the service life of the RO membrane.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to water filtration and water purification technology, in particular to a reverse osmosis water purifier and an intelligent pure water positive and negative alternating flushing water saving system and method. Background technique [0002] The reverse osmosis water purifier is a machine that mainly uses the principle of reverse osmosis for water treatment. Reverse osmosis membrane technology is to apply a certain pressure on water, so that water molecules and ionic mineral elements pass through the reverse osmosis membrane, while most of the inorganic salts (including heavy metals), organic matter, bacteria, and viruses dissolved in water cannot penetrate. Through the reverse osmosis membrane, so that the permeated pure water and the impermeable concentrated water are strictly separated. Reverse osmosis water purifiers are generally equipped with five-stage filtration is more ...

AI Technical Summary

Problems solved by technology

[0004] As mentioned above, the traditional reverse osmosis water purifier uses raw water or waste water for flushing, which cannot effectively flush the impurities such as organic colloids and inorganic salts attached to the surface of the RO membrane, and the life of the membrane will be shortened.

At the same time, the traditional reverse osmosis water purifier has a large concentrated water displacement. Taking the 50G reverse osmosis water purifier as an example, the wastewater ratio valve parameter is 420 ml / min, while the pure water flow rate is 130 ml / min. The water flow reaches a ratio of 1:3, which is quite water-consuming

[0005] At the same time, during the water production process of the reverse osmosis water purifier, as the pressure of the pressure tank increases, the back pressure of the reverse osmosis membrane module increases, that is, the back pressure problem that the pressure tank is easy to generate

[0006] When the raw water temperature of the reverse osmosis membrane is lower than 10°C, the water production rate will drop significantly, which will cause the water purifier to run for too long, even without shutting down, and the load of the booster pump will increase, which will affect the service life of the membrane.

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