Online Cleaning Device for Ship Ballast Water Filters
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Solution Overview
Problem
Existing ship ballast water treatment filters face issues with mesh blockage and decreased filtration capacity due to the accumulation of dirt and corrosion, requiring frequent backwashing and regeneration, with limited effective cleaning technologies available.
Innovation Solution
An online cleaning device and method that includes a filter cleaning pipeline and a cleaning liquid preparation tank, where a specifically formulated cleaning liquid is injected into the filter and then re-injected after soaking, allowing for filter cleaning without disassembly, using hydrochloric acid, hexamethylene tetramine, polyacrylic acid, polyaspartic acid, sodium dodecyl sulfate, and sodium gluconate to effectively remove dirt without damaging the filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the filter mesh diameter is made fine (tens of microns) to improve filtration capacity, then the filtration effectiveness increases, but the meshes become easily blocked by sand and dirt
Solution Approach 1:
The patent applies preliminary action by injecting cleaning liquid into the filter before the meshes become completely blocked, performing preventive maintenance. The cleaning liquid circulates through the filter to remove accumulated dirt and sand proactively, preventing blockage rather than waiting for it to occur.
Solution Approach 2:
The cleaning liquid acts as an intermediary substance that facilitates the removal of dirt and sand from the filter meshes. This chemical mediator enables cleaning without disassembling the filter, allowing maintenance while the filter remains in place during ship operation.
2Productivity
If the filter operates continuously without disassembly to maintain productivity, then the ship's ballast water treatment continues, but the filter meshes become corroded and blocked
Solution Approach 1:
The patent implements continuity of useful action by enabling the filter to undergo cleaning cycles while remaining installed in the ballast water system. The cleaning liquid circulation system allows the filter to be cleaned in-place without removing it from service, maintaining continuous operational capability.
Solution Approach 2:
The filter performs self-service cleaning through the circulation of cleaning liquid that removes dirt and corrosion products autonomously. The system includes injection and circulation mechanisms that enable the filter to clean itself without external disassembly or manual intervention.
3Ease of repair
If traditional cleaning methods are used requiring filter disassembly, then thorough cleaning can be achieved, but the operation becomes complex and time-consuming
Solution Approach 1:
The patent replaces mechanical disassembly and manual cleaning with a chemical cleaning system. Instead of physically taking apart the filter for cleaning, the system uses cleaning liquid circulation to chemically remove dirt and corrosion, substituting mechanical complexity with a simpler chemical process.
Solution Approach 2:
The cleaning liquid serves as an intermediary that performs the cleaning function without requiring direct mechanical access to the filter meshes. This chemical mediator enables effective cleaning while keeping the filter assembly intact, simplifying the overall cleaning process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method achieves high cleaning efficiency, restoring the filter's capacity with minimal damage and no corrosion, allowing for continuous operation without filter disassembly, and is simple to implement with a cost-effective solution.
Implementation Method 1
injecting the cleaning liquid prepared in the cleaning liquid preparation tank into the filter through the cleaning liquid injection pipeline; soaking for a predetermined period of time
Data Source
AI summary
The present invention discloses a cleaning liquid for a ship ballast water treatment filter, an online cleaning device and an online cleaning method. The online cleaning device comprises a filter cleaning pipeline and a cleaning liquid preparation tank located in the filter cleaning pipeline. The cleaning liquid preparation tank is provided with a cleaning liquid outlet and a cleaning liquid reinjection opening. The filter cleaning pipeline comprises a cleaning liquid injection pipeline located between the cleaning liquid outlet of the cleaning liquid preparation tank and a filter water inlet, and a cleaning liquid reinjection pipeline located between a filter water outlet and a cleaning liquid reinjection opening of the cleaning liquid preparation tank. The cleaning liquid prepared in the cleaning liquid preparation tank is injected into the filter through the cleaning liquid injection pipeline and is re-injected into the cleaning liquid preparation tank through the cleaning liquid reinjection pipeline.