Inclinable Tub Pupae Separator with Adjustable Bars
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Solution Overview
Problem
Existing methods for separating male and female pupae in mosquitoes, such as the Fay-Morlan and McCray devices, are labor-intensive, prone to human error, and not scalable for industrial use due to reliance on manual adjustments and inconsistent performance.
Innovation Solution
A separation apparatus with an inclinable tub and adjustable bars that allows for efficient separation of pupae based on size, featuring a bar positioning assembly to adjust the gap height and a method involving the inclinable tub's pivoting between downward and upward inclinations for effective separation and rinsing, reducing manual labor and increasing consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual adjustment of separator space is used, then device complexity is reduced, but productivity and reliability deteriorate due to labor-intensive operation and operator variability
Solution Approach 1:
The patent implements adjustable bars with positioning assemblies that allow dynamic adjustment of gap heights to accommodate varying pupae sizes across different batches and species. This dynamic adjustability replaces fixed manual separators, enabling consistent reproduction of optimal separation parameters without manual intervention for each batch.
Solution Approach 2:
The invention changes the physical parameters of the separation device by providing multiple adjustable bars at different heights and positions. These adjustable parameters (gap heights, bar positions) can be configured to match specific pupae size distributions, thereby optimizing separation efficiency for different insect types and batch variations.
2Device complexity
If manual adjustment of separator space is used, then device complexity is reduced, but reliability deteriorates due to operator variability and inconsistency
Solution Approach 1:
The adjustable bars with positioning assemblies provide dynamic configuration capability, allowing the separation device to adapt to different pupae sizes while maintaining consistent separation performance. The bars can be positioned at predetermined heights to ensure repeatable gap dimensions across multiple batches.
Solution Approach 2:
The positioning assemblies allow pre-adjustment of bar positions and gap heights before each separation batch. This preliminary configuration ensures that optimal separation parameters are established in advance, eliminating variability introduced by manual adjustment during operation and ensuring consistent results.
3Device complexity
If fixed slit space is used, then device complexity is reduced, but adaptability deteriorates for varying insect types and batch variations
Solution Approach 1:
The patent employs multiple adjustable bars that can be independently positioned at different heights and locations. This dynamic configuration allows the same device to accommodate varying pupae sizes across different insect species and batch variations, providing versatility without requiring multiple fixed devices.
Solution Approach 2:
The adjustable bar system creates a universal separation device that can handle multiple insect types and batch variations through a single configuration. By adjusting bar positions and gap heights, the same apparatus serves multiple functions for different species and size distributions, eliminating the need for species-specific fixed separators.
4Device complexity
If manual inversion of screen is used, then device complexity is reduced, but productivity deteriorates due to labor-intensive rinsing operation
Solution Approach 1:
The patent implements a periodic rinsing cycle where water is automatically directed through the separator at scheduled intervals between batches. This periodic automated rinsing action maintains separator cleanliness without requiring manual intervention, thereby preserving productivity while using a relatively simple water delivery system.
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 apparatus enables reliable, repeatable, and cost-effective sex separation of pupae, improving scalability and reducing operator variability, making it suitable for large-scale industrial applications.
Implementation Method 1
water with pupae mixture is poured on one side of the inclined tray, such that the smaller male pupae are washed through the louvered slits
Implementation Method 2
the smaller male pupae are washed through the louvered slits and out of a discharge spout at the opposite end of the tray
Data Source
AI summary
The present invention relates to devices and methods for separation of non-adult insects, such as pupae or larvae, according to sexual dimorphisms or developmental stages that can affect their size.