Water-saving purifier

Abstract

The invention provides a water-saving purifier, which comprises a first filter unit. A water pump is arranged at a water outlet of the first filter unit. A water outlet of the water pump is equipped with a RO reverse osmosis filter unit, which is provided with a pure water outlet pipe and a wastewater outlet pipe. The wastewater outlet pipe is provided with a wastewater proportioner, which is connected in parallel with a flushing solenoid valve. Discharge rate of pure water to wastewater in the wastewater proportioner is greater than or equal to 1:1. A water production pressure transducer is arranged between the water pump and the RO reverse osmosis filter unit. With the arrangement of proportion of the wastewater proportioner, lots of water resources can be saved. The arrangement of the proportion of the wastewater proportioner is easy to block minimal filtration pores in the RO reverse osmosis filter unit. With the arrangement of the water production pressure transducer and the flushing solenoid valve, the RO reverse osmosis filter unit can be repeated washed regularly, thus preventing the RO reverse osmosis filter unit from being blocked.

Description

technical field [0001] The invention relates to the field of water purification equipment, in particular to a water-saving water purifier. Background technique [0002] Water purifiers, or also known as water purifiers, can be used to filter out floating objects, heavy metals, germs, etc. in the water. For the water purifiers that filter out bacteria and viruses, the water can be directly drunk. [0003] At present, various types of filter devices are used on water purifiers to purify water quality. In addition to traditional PP cotton, activated carbon and other filter materials, relatively new filter materials include ultrafiltration membranes and RO reverse osmosis membranes, both of which can improve water quality. The bacteria and viruses in the water are filtered out, and the effluent can be directly drunk, and the RO reverse osmosis membrane can further filter out heavy metal ions and various macromolecular substances in the water. The water after RO membrane purifica...

AI Technical Summary

Problems solved by technology

However, when RO reverse osmosis membrane is filtered, the membrane must be continuously flushed, that is, a large amount of wastewater will inevitably be generated during the water production process. Generally speaking, the ratio of pure water and wastewater produced by RO reverse osmosis membrane water purifiers is 1:2. Or 1:3, drink a cup of pure water, you have to discharge two or three cups of waste water, a serious waste of water resources

However, if the ratio of pure water and waste water is increased, and the amount of waste water for flushing is insufficient, the RO membrane will be easily blocked and scrapped. However, the cost of RO membrane is much higher than that of other filter materials, resulting in maintenance and reduction of waste water. The huge opposition between wastes greatly increases the cost of maintenance and use

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