Larvae Separation System Using Graded Screens and Phototaxis
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Solution Overview
Problem
Existing methods struggle to produce a homogeneous batch of larvae with minimal variance in development stage, which is crucial for efficient protein production from insects.
Innovation Solution
A larvae separation system utilizing multiple separation chambers with graded classifier screens and selective illumination to sort larvae by size and development stage, assisted by gravity and light sources, ensuring uniformity and reducing mortality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separation chambers with graded classifier screens are used to sort larvae by size, then manufacturing precision of larvae uniformity is improved, but device complexity increases
Solution Approach 1:
The separation system is divided into multiple sequential chambers (first separation chamber, second separation chamber, third separation chamber) each with progressively finer classifier screens. This segmentation allows gradual sorting of larvae by size, achieving uniformity through staged separation rather than a single complex operation.
Solution Approach 2:
The system transitions from two-dimensional planar separation to three-dimensional stacked chambers arranged vertically. The classifier screens are positioned at different heights, creating a multi-level separation architecture that improves sorting precision while maintaining compact footprint.
2Ease of operation
If gravity is used to assist larvae movement between chambers, then ease of operation is improved, but productivity is reduced due to slower separation rate
Solution Approach 1:
Artificial light sources are introduced to replace or supplement gravity as the driving mechanism for larvae movement. The light sources create phototactic responses that actively propel larvae through the classifier screens, overcoming the limitations of passive gravitational movement and significantly increasing separation throughput.
3Productivity
If light sources are used to motivate larvae passage, then productivity is improved, but energy consumption increases
Solution Approach 1:
The artificial light sources operate in periodic cycles rather than continuously. By alternating between illumination and darkness, the system creates rhythmic phototactic responses that drive larvae movement through the screens while reducing overall energy consumption compared to continuous operation.
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 system achieves a uniform distribution of larvae size and development stage, enhancing yield and reducing mortality, thereby optimizing the insect rearing process for protein production.
Implementation Method 1
The first separation chamber comprises a first volume which is separated from the second volume by a first classifier screen with a plurality of openings of a first size
Implementation Method 2
movement of larvae from the first separation chamber to the second separation chamber through the first classifier screen is assisted by gravity
Implementation Method 3
the second light source configured to selectively illuminate the second volume for motivating the passage of larvae contained in the second separation chamber to a third separation chamber through the first classifier screen
Data Source
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AI summary
System (100) and method for separating larvae. The larvae separation system (100) features a first separation chamber (110) and a second separation chamber (120). The first separation chamber (110) features a first classifier screen (112) with a plurality of openings of a first size and a first volume (114) which is at least partly delimited by the first classifier screen (112). The second separation chamber (120) is connected to the first chamber (110) and has a second volume (124). The first volume (114) and the second volume (124) are separated by the first classifier screen (112) of the first separation chamber (110) which has first light source (113) for selectively illuminating the first volume (114) for the purpose of motivating the passage of larvae contained in the first separation chamber (110) to the second separation chamber (120) through the first classifier screen (112).