Seawater desalting device, seawater desalting method and medicinal liquid washing method

Abstract

The invention relates to a seawater desalting device, a seawater desalting method and a medicinal liquid washing method. A seawater reverse osmosis filtering device comprises a water inlet valve, a high-pressure pump, a reverse osmosis membrane group, a pressure adjusting valve, a water outlet valve, a fresh water outlet valve, a liquid level valve, a washing water tank and a washing valve, wherein the water inlet valve and the washing valve are first duplex integrated control valves; a fluid channel I is formed inside the water inlet valve; a fluid channel II is formed inside the washing valve; the fluid channel I and the fluid channel II are rotated and matched synchronously with valve core rods; touch points are arranged on the valve core rods; the touch points respectively correspond to a first touch point switch and a second touch point switch in different positions; the first touch point switch is electrically connected with a high-pressure pump switch so as to form a first power-on switch circuit; the second touch point switch is electrically connected with a time controller and the high-pressure pump switch so as to form a second power-on switch circuit. By adopting the structure, procedures of stopping and washing machines and washing by using a medicinal liquid in seawater desalting are reduced, the structure is simplified, and the efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a seawater desalination device with a double-connected integrated control valve, a seawater desalination method and a liquid medicine cleaning method. Background technique [0002] At present, in the field of seawater desalination, the technology for preparing freshwater from seawater is to perform precision filtration first, and then use a high-pressure pump to pressurize the seawater to produce freshwater through a reverse osmosis membrane. However, when the high-pressure pump is shut down, the remaining And the seawater in the reverse osmosis membrane cannot flow out, and over time, it is easy to cause fungal pollution to the high-pressure pump and the reverse osmosis membrane; in addition, when the reverse osmosis membrane reaches the working limit, the reverse osmosis membrane needs to be cleaned with chemicals to continue to produce fresh water; In view of thi...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of seawater desalination, the technology for preparing freshwater from seawater is to perform precision filtration first, and then use a high-pressure pump to pressurize the seawater to produce freshwater through a reverse osmosis membrane. However, when the high-pressure pump is shut down, the remaining And the seawater in the reverse osmosis membrane cannot flow out, and over time, it is easy to cause fungal pollution to the high-pressure pump and the reverse osmosis membrane; in addition, when the reverse osmosis membrane reaches the working limit, the reverse osmosis membrane needs to be cleaned with chemicals to continue to produce fresh water; In view of this, how to design an easy-to-control seawater desalination device and an easy-to-operate seawater desalination method and liquid medicine cleaning method have become problems to be solved

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