Purifier

Abstract

The invention relates to the field of water treatment, particularly to the deep filtration and purification of drinking water, and comprises a filter element, an inlet and an outlet pipeline interfaces, and a water path switcher connected between the inlet and the outlet pipeline interfaces and the filter element, wherein the water path switcher comprises two switching disks with 2 to 16 switching positions and a plurality of switching water gaps that are arranged in the switching positions on the contact surface between the two switching disks and respectively communicate with the water paths. The water path switcher further comprises a pressing component and a closed switching interface formed at the periphery of the switching water gaps by the contact surface of the two switching disks with overlapping axis of rotation; the two switching disks contact each other and can rotationally change the relative switching positions. The invention has the advantages of simple and practical structure, low cost, good repercussion effect, improved purifying effect and prolonged service life of the filter element. Through the switching of the water path switcher, multiple layers of the filter element or multi-stage filter element can be thoroughly washed layer by layer or stage by stage, and the impurities can be discharged layer by layer or stage by stage.

Description

technical field [0001] The invention relates to the water treatment industry, and specifically relates to the deep filtration and purification of drinking water. Background technique [0002] At present, water purifiers are relatively popular in China. When using water, the water purifier is used to filter the water and the impurities caused by the water pipeline in depth, which better protects the health of users. Yet, along with the popularization of water purifier, their defect and deficiency also gradually exposed in application aspect. After the filter element of the water purifier is 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 decline in filtration and adsorption effects. The "pollution" degree of the filter element impurities exceeds the "pollution" degree of the drinking water itself, so that the filter element becomes a n...

AI Technical Summary

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 secondary pollution caused by excessive interception of impurities, so it is reluctant to use it, which makes it difficult for water purifiers to be widely used

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