Most water purifiers adopt a progressive structure based on the screen-blocking filtering principle, which is composed of multi-stage filter elements connected in series from end to end. The precision of filter elements is arranged in sequence from low to high, so that multi-stage filter elements can share the trapped dirt, reduce the number of filter element blockage, manual sewage discharge and disassembly and washing, and prolong the cycle of replacing filter elements.
There is also a new design idea, that is, the self-cleaning structure based on the principle of mass circulation. Its design idea is no longer to provide as much space as possible, but to separate a small part of clean water by the principle of mass separation, and at the same time, to make the raw water circulate as usual as much as possible, so that pollutants can be taken away with the water in time, so as to achieve the purpose of running water without rot.
In this way, pure water can be obtained without or easily depositing dirt in the machine, which avoids secondary pollution, greatly reduces the loss of filter elements, and has better water quality, safety, energy saving and low carbon.
Extended data
Different structures of water purifiers have different water purification effects. Generally speaking, the primary filtration water purifier is simple in structure, mainly made of activated carbon, with limited filtration capacity, and can only be used for coarse filtration. It is best to boil the filtered water and drink it. Most of the primary filtration water purifiers belong to low-grade water purification products, and the price of each one ranges from 10 yuan to 150 yuan.
Multi-stage filtration water purifier. This water purifier has two stages of coarse filtration and a set of fine filtration. The fine filtration mostly adopts hollow fiber filter element, and the filtered water can be directly drunk. Multi-stage filtration water purifier is a mid-range water purification product, the price is between 300-500 yuan, which is acceptable to the working class and widely used in families.
UF ultrafiltration nanofiltration membrane water purifier is composed of multi-stage pre-filtration and ultrafiltration membrane, which can intercept most bacteria and harmful substances. It is the most commonly used direct drinking water purification device with the most common separation and filtration effect in the market, while retaining mineral trace elements beneficial to human body. Using the advantages of KDF and activated carbon, it can effectively inhibit the growth of bacteria and fungi in water and remove abnormal colors and odors.
Moreover, the water output is relatively large, and the waste water discharge is small, so it is faster and more convenient to use in the family kitchen without waiting for a long time. It belongs to mass consumer goods. According to different requirements, the price of each set ranges from 5,000 yuan to 200 yuan.
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