Backwashing water processor

Abstract

The invention relates to the water processing industry, in particular to depth filtration and purification of drinking water. The invention discloses a backwashing water processor, comprising a filter element, a machine base with water inlet and water outlet pipes A, B and a waterway switcher composed of upper and lower switching discs which have five equant switching positions and are contacted and matched with each other to form a sealed switching surface. The waterway switcher is connected between the water inlet and water outlet pipes A, B of the machine base and the water inlet and water outlet of the filter element. An upper disc of the waterway switcher, which is provided with five water gaps, can rotate. A lower disc of the waterway switcher is correspondingly provided with four water gaps, a discharge water gap of which is connected with a discharge pipe C of the machine base. The backwashing water processor has the following advantages: the filter element is characterized by thorough backwashing and visual effects; the backwashing water processor meets different demands for drinking water and used water; dynamic monitoring and alarming toward the fine filter element ensures the filtration quality and prolongs the service life of the filter element; and users can voluntarily change the filter element, thus correspondingly lowering the use cost of the filter element and simultaneously being convenient for the remote users.

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, the use of water purifiers has been popularized to a certain extent in China. When using water, the water purifier is used to deeply filter the impurities in the water and water pipelines, 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 el...

AI Technical Summary

Problems solved by technology

However, with the popularization of water purifiers, their defects and deficiencies in application have gradually been exposed.

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. Make the "pollution" degree of the filter element impurities exceed the "pollution" degree of drinking water itself, so that the filter element becomes a new "pollution" source

Especially in some fine filter elements using ultrafiltration membrane, nanofiltration membrane, and reverse osmosis membrane, due to the extremely small pore size of the screen, it is easy to cause clogging during use, which affects the life of the filter element

For this reason, these fine filter elements are equipped with a "drainage outlet" for drainage and flushing: nanofiltration membranes and reverse osmosis membranes adopt a regular discharge "drainage outlet" for continuous discharge; Flow-type filter structure, open the sewage outlet intermittently to flush the ultrafiltration filter element, but because the sewage outlet and the water inlet are on the water inlet side of the filter layer, the effect of flushing the filter layer is very poor, although some high-end water treatment equipment Through the electric control system and multi-channel solenoid valve to change the direction of water flow, the reverse flushing from the water outlet to the water inlet is realized, and the impurities trapped in the filter element are flushed out.

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 can only recoil at regular intervals. , not easy to promote

At the same time, in order to ensure that the granular filter material such as activated carbon does not escape from the filter element, that is, the phenomenon of "running carbon" does not occur, the front and rear stages of the existing water purifier mostly use screen-type filter material, and the intermediate stage is granular filter material. It is very difficult to use the reverse full backflushing mode to completely discharge the intermediate impurities accumulated on the rear screen through the multi-stage filter element and then completely discharged from the water inlet. It often occurs that the intermediate impurities cannot be discharged by forward and reverse back and forth flushing.

However, high-end water purifiers with filter element status prompt function determine the corresponding filter element status according to the water flow rate, which cannot truly reflect the use status of the filter element in different environments.

In addition, all the washing water that only needs rough treatment will be purified water after advanced treatment, and the machine will quickly alarm and prompt to replace the filter element, which will increase the user's economic and psychological burden.

Furthermore, the discharge pipes of existing water purifiers with recoil cleaning function or concentration discharge port are usually directly discharged into the sewer pipe, and users cannot intuitively see the effect of filtering and retaining impurities, and then understand the importance of using water purifiers insufficient

This is a great shortcoming for the popularization of water purifiers, and it is also a major reason for the long-term slow development of the water purifier industry.

In addition, it is generally a small flow and fine filtration mode, 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.

In addition, the replacement of the filter element of the existing water purifier is more troublesome, and generally requires professional on-site service, resulting in higher cost of the filter element

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

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