Rotating Shellfish Cultivation Base for Sediment Avoidance
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Solution Overview
Problem
Current shellfish cultivation methods face challenges such as labor-intensive installation and harvesting, exposure to sediment and parasites, overcrowding, complex and costly equipment, and inadequate tagging and identification systems, leading to stress and quality issues in shellfish.
Innovation Solution
A shellfish cultivation apparatus featuring a base with a culture surface and a pin attachment that allows rotational movement on a culture rope, enabling self-orientation of shellfish, combined with a disc for secure adhesive application and UV-stable plastic materials for durability, and markings for traceability and marketing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If shellfish are cultivated on fixed platforms installed on the seabed, then large numbers of shellfish can be cultivated, but the shellfish are exposed to sediment and parasites, and the cultivation process is labor-intensive
Solution Approach 1:
The invention transitions from seabed-level cultivation to water-column cultivation by suspending shellfish on ropes hung from floating structures. This vertical dimensionality change elevates shellfish above sediment-prone zones while maintaining high-density cultivation capacity through multi-ropes per floating structure.
Solution Approach 2:
The floating structure acts as an intermediary between the seabed and shellfish, providing a mobile platform that can be positioned in optimal water currents while keeping shellfish suspended in clean water columns, thereby mediating between cultivation density requirements and sediment avoidance.
2Quantity of substance
If shellfish are cultivated on fixed platforms, then cultivation capacity is increased, but harvesting requires intensive labor to remove and individually harvest each shellfish
Solution Approach 1:
The cultivation system is segmented into modular units where shellfish are grouped on individual ropes or sections that can be independently harvested. This allows selective harvesting of mature shellfish without disturbing the entire cultivation system, significantly reducing harvesting time and labor.
Solution Approach 2:
The floating structures and suspension ropes create a dynamic cultivation system that can be easily deployed, repositioned, and harvested. The modular design allows rapid assembly and disassembly, transforming the static, labor-intensive platform system into a flexible, quickly harvestable configuration.
3Area of stationary object
If shellfish are densely packed on platforms, then cultivation space is maximized, but shellfish experience overcrowding stress and compete for food resources
Solution Approach 1:
Each shellfish or small group of shellfish on a rope segment experiences its own localized water flow and food delivery zone. The suspension configuration creates micro-environments around each shellfish that ensure adequate food access and reduce competitive stress, while maintaining high overall cultivation density through efficient space utilization.
4Object-affected harmful factors
If complex holder designs are used to cultivate individual shellfish, then shellfish can be suspended in water column, but manufacturing costs increase significantly
Solution Approach 1:
The invention employs simple, inexpensive rope and basic floating structure components that can be easily manufactured or sourced. These simple elements replace complex, expensive holders while achieving the same function of suspending shellfish in clean water columns, significantly reducing manufacturing costs.
5Reliability
If precise placement of juvenile oyster spat is required for optimum growth, then growth quality is improved, but the commencement process becomes time-consuming
Solution Approach 1:
The suspension ropes and floating structures are designed to allow juvenile oyster spat to attach themselves naturally to the rope surfaces or simple attachment points in the water column. This self-attachment mechanism eliminates the need for time-consuming manual precise placement while still achieving optimal growth conditions through natural distribution and water flow exposure.
Data Source
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AI summary
An apparatus for the cultivation of shellfish, the apparatus including a base with a culture surface and a support attachment for the base, the apparatus characterised in that the support attachment is configured to permit rotational movement of the base relative to a support when the base is secured to the support.