Multi-Layer Net Device for Wind-Borne Seed Harvesting
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Solution Overview
Problem
Existing devices for harvesting wind-borne seeds of wetland plants are complex, costly, and inefficient, often leading to low germination rates due to structural flaws and difficulty in determining seed maturity.
Innovation Solution
A multi-layer net device with progressively smaller mesh sizes and elastic hard fibers to guide and secure seeds, ensuring easy entry and preventing seed loss, featuring a simple structure made from easily available materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex harvesting devices with multiple components are used, then seed capture capability is improved, but device complexity and cost increase
Solution Approach 1:
The harvesting device is divided into multiple functional segments: a seed capture net with progressively smaller mesh sizes arranged in layers, an elastic hard fiber layer for securing seeds, and a collection container. Each segment performs a specific function in the seed harvesting process, allowing the system to achieve reliable seed capture through modular functional division rather than a single complex structure.
Solution Approach 2:
The device employs a nested structure where the collecting net is placed inside the collection container, and the elastic hard fiber layer is integrated within the net structure. The multi-layer net with progressively smaller meshes is arranged concentrically, creating a compact configuration that maximizes seed capture efficiency while minimizing overall device complexity and material usage.
2Quantity of substance
If traditional harvesting methods are used, then seed collection is achieved, but germination rate decreases due to premature or delayed picking
Solution Approach 1:
The device enables seeds to harvest themselves through natural wind dispersal. The multi-layer net with progressively smaller meshes allows seeds to be passively captured as they are blown by the wind, eliminating the need for manual monitoring and picking. This self-service mechanism ensures seeds are collected at their natural maturity stage without human intervention that might cause premature or delayed harvesting, thereby maintaining high germination rates.
3Device complexity
If simple harvesting devices are used, then device complexity is reduced, but seed capture efficiency decreases
Solution Approach 1:
The device applies local quality differentiation through the multi-layer net structure where each layer has progressively smaller mesh sizes. The first layer captures larger seeds, while subsequent layers capture smaller seeds, creating localized functional zones within the simple overall structure. This local quality variation enables efficient seed separation and capture without requiring complex mechanical sorting mechanisms.
Solution Approach 2:
The device utilizes parameter changes in mesh size across different layers to achieve efficient seed harvesting. By progressively decreasing the mesh size from the first layer to the last layer, the device creates a gradient that effectively captures seeds of various sizes through wind dispersal. This parameter variation in a simple net structure achieves high seed capture efficiency without complex mechanical components.
4Quantity of substance
If existing harvesting devices are used, then seed collection is achieved, but consumptive materials and production cost increase
Solution Approach 1:
The device employs thin film net structures with progressively smaller meshes that are lightweight and low-cost to manufacture. The elastic hard fibers are thin and flexible, forming a minimalistic structure that captures seeds efficiently while using very little material. This approach to seed harvesting achieves effective seed collection with minimal consumptive materials and low production costs.
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 device effectively captures mature seeds with high germination rates, reducing costs and effort, and simplifying the seed harvesting process while ensuring seed quality and efficiency.
Implementation Method 1
the collecting net, the intermediate layer net and the bottom layer net are all plate-like structure having a plurality of meshes; mesh sizes on the collecting net, the intermediate layer net and the bottom layer net are configured to be successively and gradually decreased; air but not plant seeds can pass through the meshes of the bottom layer net
Implementation Method 2
a plurality of elastic hard fibers are provided at periphery of mesh of the collecting net; the elastic hard fibers stretch out towards the intermediate layer net
Data Source
AI summary
A plant seed harvesting device comprises a multi-layer net unit; the multi-layer net unit comprises collecting net, intermediate layer net and bottom layer net; the collecting net, the intermediate layer net and the bottom layer net are all plate-like structure having a plurality of meshes; the peripheral edge of the plate-like structure is a net frame, area with the meshes is net face; The collecting net, the intermediate layer net and the bottom layer net are arranged closely in the axial direction to form the multi-layer net unit; mesh sizes on the collecting net, the intermediate layer net and the bottom layer net are configured to be successively and gradually decreased; plant seeds can pass through the meshes of the collecting net; air but not plant seeds can pass through the meshes of the bottom layer net.