Pure water device

Abstract

The invention provides a pure water device. The pure water device comprises a water inlet pipeline, a PP (Polypropylene) cotton filter element, a prepositive activated carbon filter element, a first RO membrane filter element, a second RO membrane filter element, a composite filter element and a water outlet pipeline, wherein the first RO membrane filter element and the second RO membrane filter element are arranged in series or in parallel; the composite filter element comprises an ultrafiltration membrane and postpositive activated carbon; and tap water enters from the water inlet pipeline and then sequentially passes through the PP cotton filter element, the prepositive activated carbon filter element, the first RO membrane filter element or the second RO membrane filter element and enters the composite filter element and finally flows out of the water outlet pipeline. According to the pure water device, since the composite filter element is arranged in front of the pure water outlet, the water quality of effluent water can be ensured so that the mouth feeling of the effluent water is good; and the filtration process is improved, even if the pure water machine is not used in a long term, the pure water can be drunk when the pure water machine is started and thus the pure water device is convenient to use and safe.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a pure water device. Background technique [0002] With the development of the pure water industry, the water filtration process of the pure water machine is various, which can filter and produce pure water of different qualities, and the functions of each filter element in the filtration process are also different. [0003] The general filtration process is to pass through the PP cotton filter element, activated carbon filter element, ultrafiltration membrane filter element, etc. or a combination of these filter elements before the RO membrane. The conventional filtration process generally uses these filter elements. In a large-flow pure water system (that is, without using a water storage pressure tank, the flux of the RO membrane is large), the pure water filtered by the RO membrane is connected to the gooseneck faucet, and there is no gap between the RO membrane pure water end ...

AI Technical Summary

Problems solved by technology

If the pure water machine is not used for a period of time, or when the filter element is being maintained, bacteria and viruses in the tap water can easily enter the pure water pipeline to pollute the water quality and affect the safety of the water quality

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