A kind of microfiltration or ultrafiltration or nanofiltration or ro water purifier that filters again

Abstract

The invention discloses a microfiltration or ultrafiltration or nanofiltration or RO water purifier realizing filter core secondary filtration. The microfiltration or ultrafiltration or nanofiltration or RO purifier comprises a raw water inlet, one or more stages of pre-filter cores, a microfiltration or ultrafiltration or nanofiltration or RO filter core, one or more stages of post-filter cores, an air-pressure water storage cavity, a one-way valve A or a valve A, a one-way valve B or a valve B, and a clean water outlet or the next stage of a filter core connector. The raw water inlet is communicated orderly with one or more stages of the pre-filter cores, a connection pipe A, the microfiltration or ultrafiltration or nanofiltration or RO filter core, a connection pipe B, one or more stages of the post-filter cores, a connection pipe C, the air-pressure water storage cavity, a connection pipe D, the connection pipe B, one or more stages of the post-filter cores, and the clean water outlet or the next stage of the filter core connector. The one-way valve B or the valve B is arranged between the air-pressure water storage cavity and a three-way valve B. The one-way valve A or the valve A is arranged between the air-pressure water storage cavity and a three-way valve A.

Description

Technical field: [0001] ---The present invention relates to water quality and liquid purification treatment technology, specifically a microfiltration or ultrafiltration or nanofiltration or RO water purifier for re-filtering with a filter element. technical background: [0002] ---At present, each filter element of microfiltration, ultrafiltration, nanofiltration or RO membrane water purifiers at home and abroad can only achieve one filtration and then reach the water purification outlet, especially for pure water machines because the pure water produced by the pure water machine lacks minerals and trace elements, because domestic studies have pointed out that drinking pure water for a long time may have the risk of cardiovascular and cerebrovascular and arteriosclerosis, in general, because pure water lacks natural minerals and trace elements, and humans have been All drinking water contains natural minerals and trace elements. Therefore, pure water is not the best and mos...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages in the prior art that the filter element only reaches the water purification outlet after filtering once, and the mouthfeel is not perfect, so that activated carbon or carbon fiber and other residual chlorine removal filter elements can be filtered again to improve the quality of purified water , so as to achieve the purpose of more perfect water taste

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