Water purifying device for water dispenser

Abstract

The invention discloses a water purifying device for a water dispenser. The invention relates to the technical field of water purification equipment, and discloses a water purifying device. The water purifying device comprises a reverse osmosis membrane filter element, a rear carbon filter element and a TDS reduction filter element, wherein the reverse osmosis membrane filter element is provided with a pure water outlet, a wastewater outlet and a raw water inlet communicated with raw water; the rear carbon filter element comprises a first water inlet communicated with the pure water outlet and a pure water outlet communicated with a faucet; the TDS reducing filter element is arranged between the reverse osmosis membrane filter element and the rear carbon filter element and comprises a second water inlet and a water outlet, the second water inlet is communicated with the pure water outlet, and the water outlet is communicated with the first water inlet. According to the invention, pure water filtered by the reverse osmosis membrane filter element is filtered by the TDS reducing filter element again, so that the TDS value of outlet water is ensured to be in a relatively low condition in the whole running period of the drinking water equipment, pipeline pollution is avoided, the quality of the pure water is ensured, the body health of a user is ensured; meanwhile, 'a first cup of water' does not need to be discharged, and the waste of water resources is avoided.

Description

technical field [0001] The invention relates to the technical field of water purification equipment, in particular to a water purification device for a water dispenser. Background technique [0002] At present, in domestic or commercial water purifiers, reverse osmosis membranes are used to filter impurities in water. However, in the actual use process, since the use of drinking water equipment is intermittent, during the shutdown process, the water flow inside and outside the membrane is in a static state. It will permeate through the membrane to the pure water end, making the TDS of the pure water end higher, which violates the original intention of the reverse osmosis membrane to remove ions. Aiming at the problem of high TDS of the "first glass of water", existing manufacturers will set up pure water outlet TDS probes to detect the TDS of the outlet water, and remind users of the high TDS of the outlet water through the indicator light. Although this can remind users, b...

AI Technical Summary

Problems solved by technology

However, in the actual use process, since the use of drinking water equipment is intermittent, during the shutdown process, the water flow inside and outside the membrane is in a static state. It will permeate through the membrane to the pure water end, making the TDS of the pure water end higher, which violates the original intention of the reverse osmosis membrane to remove ions

Aiming at the problem of high TDS of the "first glass of water", existing manufacturers will set up pure water outlet TDS probes to detect the TDS of the outlet water, and remind users of the high TDS of the outlet water through the indicator light. Although this can remind users, but for users to Reduce the TDS of drinking water and discharge the "first glass of water", resulting in a waste of water resources

In addition, some manufacturers do not have corresponding prompts, which causes users to drink high TDS water by mistake for a long time and affect their health

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