A combined type reverse-osmosis constant-pressure water purifier

Abstract

The invention relates to a water purifier and particularly relates to a combined type reverse-osmosis constant-pressure water purifier. The technical problems to be overcome are to prolong the service lifetime of RO (reverse osmosis) membranes, to increase the water purification efficiency, to accurately master the replacing time of the RO (reverse osmosis) membrane, and to effectively avoid a circumstance that a bacteria amount of purified water exceeds a threshold. To achieve the objectives, a technical scheme as follows is provided: the water purifier comprises a water pump, a filtering unit, an RO (reverse osmosis) membrane treatment unit, and a water storage barrel connected to a purified water discharging pipe of the RO (reverse osmosis) membrane treatment unit, wherein the filtering unit and the RO (reverse osmosis) membrane treatment unit are connected to a water feeding pipe in order; the water feeding pipe of the RO (reverse osmosis) membrane treatment unit is provided with a magnetic valve; a waste water pipe of the RO (reverse osmosis) membrane treatment unit is provided with a water return pipe; and the water return pipe is used for returning waste water to a water feeding end of the RO (reverse osmosis) membrane treatment unit. The water purifier achieves beneficial effects of prolonging the service lifetime of RO (reverse osmosis) membranes, achieving effective bacteriostasis, and reducing energy consumption and the output of waste water.

Description

technical field [0001] The invention relates to a water purifier, in particular to a combined reverse osmosis constant pressure water purifier. Background technique [0002] The main problem existing in the current product is that the total number of colonies in the soaking test exceeds the standard. However, none of the existing reverse osmosis water purifiers has a filter element to kill the colonies, so that the total number of bacterial colonies will exceed the standard again when the water purified by the entire reverse osmosis water purifier enters the pressure tank, causing harm to human health. The RO reverse osmosis membrane of the reverse osmosis water purifier has a short service life, and there is no good control over the time to replace the RO reverse osmosis membrane, resulting in either not being replaced in time, or the RO reverse osmosis membrane being replaced before its service life, resulting in waste. Contents of the invention [0003] The technical p...

AI Technical Summary

Problems solved by technology

However, none of the existing reverse osmosis water purifiers has a filter element to kill the colonies, so that the total number of bacterial colonies will exceed the standard again when the water purified by the entire reverse osmosis water purifier enters the pressure tank, causing harm to human health. The RO reverse osmosis membrane of the reverse osmosis water purifier has a short service life, and the time for replacing the RO reverse osmosis membrane is not well controlled, resulting in either not being replaced in time, or the RO reverse osmosis membrane is replaced before the end of its service life, resulting in waste

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