Backwashing water purifier

Abstract

The invention relates to the water treatment industry, in particular to deep filtration and purification of drinking water. The invention discloses a backwashing water purifier which comprises a base and a filter element, wherein a double interface water path switcher and a sealing gland are also arranged in the base; the double interface water path switcher comprises an upper disk, a middle disk and a lower disk which are respectively provided with a switching water slot; the sealing gland is in contact and matched with the upper disk, the middle disk, the lower disk and the base; the water path switcher respectively comprises 5 to 8 pairs of equally divided switching positions; the switching water slot of the upper disk is respectively communicated with independent water channels A, B and C; the water slot of the lower disk is communicated with the water slot of the filter element; the middle disk which is positioned between the upper disk and the lower disk can rotate to simultaneously carry out sealing switching to the two switching interfaces; and the communicated relations among the switching water slots of the three disks can be changed along with the rotation of the middle disk. The invention has the advantages of simple and practical structure, low cost, easy control of the assembling quality, visual backwashing conditions, good effect and good environmental adaptability.

Description

Technical field [0001] The present invention is related to the water treatment industry, and specifically relates to the deep filtration and purification of drinking water. Background technique [0002] At present, the use of water purifiers has become more popular in China. When using water, a water purifier is used to deeply filter the impurities in the water and the water pipeline, which better protects the health of users. However, with the promotion of water purifiers, their application defects and deficiencies have gradually been exposed. After the filter element of the water purifier has been used for a period of time, the filter material of the filter element is gradually blocked by impurities and adsorbed on the outer surface of the filter material, resulting in a significant decrease in filtration and adsorption effects. Moreover, as the filter element intercepts more and more impurities, it tends to The "pollution" degree of the impurities of the filter element exceeds...

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Problems solved by technology

However, since the outlet and the water inlet are on the same side of the filter layer, the effect of flushing the filter layer is very poor. Reverse flushing of the water port to flush out the impurities trapped in the filter element

However, due to the need to be equipped with a power supply system, electronic control system, timing device, multiple solenoid valves, etc., the price is very high. Therefore, although this type of water purifier has a better effect, the price is very high and it is not easy to promote.

Moreover, the front and rear stages of existing water purifiers mostly use screen-type filter materials, and the intermediate stage is a structure of granular filter materials. It is difficult to remove the impurities accumulated in the middle and permeated screens in the rear stage by using the reverse full recoil mode. After passing through the multi-stage filter element, it is completely discharged from the water inlet, and the intermediate impurities are often washed back and forth in the forward and reverse directions and cannot be discharged; the water purifier without the "backwash" function, because the user is worried that the purification effect will decline. The fast stability is poor, and the filter element is afraid of excessively intercepting impurities and causing secondary pollution, so it is unwilling to use

In addition, the water purifier has a single function and poor adaptability

Generally, it is a mode of small flow and fine filtration, which is limited to drinking water, and there is a lack of models that can take into account the dual functions of drinking and washing

However, water purifiers with washing flow are often expensive and bulky.

Above-mentioned defect and deficiency cause water purifier to be difficult to obtain wider popularization

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