Engine base device of backwashing water purifier

Abstract

The invention relates to the industry of water treatment, in particular to the aspects of depth-type filtration and purification of drinking water and discloses an engine base device of a backwashing water purifier. The engine device comprises an inner cavity and a sealing pad, wherein the inner cavity is provided with a water inlet pipeline and a water outlet pipeline and a draining pipeline, and the opening end face of the inner cavity is provided with a sealing piece and screw holes; the engine base device also comprises a water way switching device and a sealing cover, and the water way switching device is provided with a fixing disk, a rotating disk and a manual shaft assembly; the fixing disk is provided with a water draining hole communicated with the draining pipeline and mutually inserted with a limit device together with the sealing pad; a downward water inlet bent hole of the rotating disk corresponds to the water inlet of the fixing disk and is communicated with a water inlet pipeline of the sealing cover; the lower end of the manual shaft assembly is in a connection fit with the rotating disk, and the upper part of the manual shaft assembly is matched with a small cavity of the sealing cover and passes through a through hole of the small cavity; the sealing cover is provided with the water inlet pipeline and a water outlet pipeline and an isolating and sealing piece of the two pipelines, in a contact fit with a water way switching device through the isolating and sealing piece and matched with the inner cavity through screws. The engine base device has simple assembly and operation, stable quality and good backwashing effect.

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...

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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.

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

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