Installation-free water purification system capable of adjusting recovery rate, and control method of installation-free water purification system

Abstract

The invention relates to an installation-free water purification system capable of adjusting recovery rate, and a control method of the installation-free water purification system. The installation-free water purification system comprises a raw water tank, a reverse osmosis membrane treatment device, a pure water tank, an instantaneous hot heating body and an electric control device; the raw watertank is provided with a raw water outlet and a concentrated water inlet; and a vertical partition plate with adjustable height, three electromagnetic type liquid level switches and a magnetic floatercontrolled by an electromagnetic switch are arranged in the raw water tank. A raw water TDS probe is mounted at the raw water outlet, the concentrated water outlet of the reverse osmosis membrane treatment device is connected with the concentrated water inlet of the raw water tank, the pure water outlet of the reverse osmosis membrane treatment device is connected with the water inlet of the purewater tank, a pure water TDS probe is mounted at the pure water outlet of the reverse osmosis membrane treatment device, the water outlet at the bottom of the pure water tank is connected with the water inlet of a water supply pump, and the water outlet of the water supply pump is divided into two paths which are connected with a water and steam separation water outlet nozzle respectively. The installation-free water purification system capable of adjusting recovery rate can adjust the recovery rate of the concentrated water to adapt to the water quality requirements in different areas.

Description

technical field [0001] The invention relates to an installation-free water purification system with adjustable recovery rate and a control method thereof, belonging to the technical field of drinking water treatment. Background technique [0002] Now there are installation-free clean drinking machines on the market, which are easy to operate, save the need for laying pipelines and specific installation environments, and are more suitable for current home places. However, this type of free-installation clean drinking machines use water tanks to hold municipal tap water. The water quality of municipal tap water in different regions The difference is very large. In the process of preparing pure water, the original municipal tap water in the water tank and the concentrated water concentrated by the reverse osmosis membrane will mix with each other, resulting in the continuous increase of the salt content and hardness of the mixed water in the original water tank. The remaining h...

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Problems solved by technology

[0002] Now there are installation-free clean drinking machines on the market, which are easy to operate, save the need for laying pipelines and specific installation environments, and are more suitable for current home places. However, this type of free-installation clean drinking machines use water tanks to hold municipal tap water. The water quality of municipal tap water in different regions The difference is very large. In the process of preparing pure water, the original municipal tap water in the water tank and the concentrated water concentrated by the reverse osmosis membrane will mix with each other, resulting in the continuous increase of the salt content and hardness of the mixed water in the original water tank. The remaining high-concentration mixed wastewater still remains in the reverse osmosis membrane

Soaking the membrane in wastewater will lead to a decrease in the life of the reverse osmosis membrane. At the same time, the salt in the high-concentration mixed wastewater will have an osmotic effect, so that the longer the shutdown time, the more salt will penetrate, resulting in ultra-high TDS of pure water.

The concentrated water recovery rate of this installation-free drinking water machine is fixed, and the water saving rate cannot be adjusted according to the water quality in different regions, and the water saving rate is always kept high. The concentration is too high, resulting in an increase in the concentration of the influent water of the reverse osmosis membrane, which accelerates the attenuation of the reverse osmosis membrane, accelerates the pollution speed of the reverse osmosis membrane, shortens the life of the reverse osmosis membrane and causes waste of reverse osmosis membrane consumables

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