Water purifier waterway system capable of backwashing

[0002] At present, with the development of society, people pay more and more attention to health issues. Since tap water contains many substances that are not conducive to health, more and more people will install water purification equipment in their homes to filter tap water; currently The water purification equipment mainly relies on the reverse osmosis membrane (RO membrane) to filter the tap water. The water purification equipment uses the RO membrane to separate the water in the tap water from impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria and viruses under pressure. ;During the standby process of the water purification equipment, there are tap water, waste water and pure water in the RO membrane filter element at the same time, wherein the raw water and waste water are both in front of the membrane of the RO membrane filter element, while the pure water is behind the membrane of the RO membrane filter element, and the tap water The total dissolved solids (TDS) value in wastewater and wastewater is much higher than the TDS value of pure water, so when the water purification equipment is on standby for a long time, the ions in tap water and wastewater will gradually diffuse into the pure water, thus making the pure water The TDS value of the water will increase; when the water purification equipment is started next time, the TDS value of the water in the front section will be relatively high, which will affect the health of users