Impact Processing Device for Weed Seed Devitalization
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Solution Overview
Problem
Current seed devitalization technologies, such as hammer mills and cage mills, face limitations in throughput capacity and efficiency when processing chaff residues due to screen size constraints and airflow issues, which hinder effective weed seed destruction during harvesting.
Innovation Solution
An impact processing device with a central impact mechanism and circumferentially extending structures featuring textured surfaces and strategically arranged holes, which induces differential material flow and residence time based on material type, enhancing seed devitalization and throughput capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hammer mills or cage mills are used for weed seed devitalization, then seed destruction capability is improved, but throughput capacity is limited due to screen size constraints
Solution Approach 1:
The processing structure is divided into multiple circumferential sections with different functions: a first processing sector with textured surface for impact, and a first screening sector with holes for material flow. This segmentation allows simultaneous processing and screening, increasing throughput without compromising seed devitalization effectiveness.
Solution Approach 2:
The invention transitions from traditional linear or radial screen arrangements to a circumferential arrangement around the impact mechanism. This dimensional change allows the screening surface to wrap around the impact zone, maximizing the use of three-dimensional space and enabling higher throughput capacity while maintaining effective seed contact.
2Quantity of substance
If traditional screening arrangements are used, then material separation is achieved, but differential material flow and residence time optimization is lost
Solution Approach 1:
Different circumferential sectors have different properties: the processing sector has a textured impervious surface for impact, while the screening sector has holes for flow. This local differentiation optimizes material flow paths and residence times for different material types, enhancing processing efficiency and throughput capacity.
3Reliability
If screen holes are made smaller to improve seed destruction, then devitalization effectiveness increases, but airflow and throughput are restricted
Solution Approach 1:
The screening surface is arranged circumferentially around the impact mechanism, creating a three-dimensional flow path. This allows adequate airflow and throughput capacity even with smaller hole sizes, as the circumferential arrangement provides multiple flow paths and maximizes the screening surface area relative to the processing zone.
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 devitalizes weed seeds by optimizing impact and flow dynamics, increasing throughput capacity and ensuring efficient processing of chaff residues, thereby reducing the risk of volunteer weeds and grain loss.
Implementation Method 1
The impact mechanism is operable to impact material against the processing sector
Implementation Method 2
Crop cleaning system used during harvesting employ a winnowing action to remove light chaff material from the heavier grain using airflow and mechanical sieving
Data Source
AI summary
An impact material processing device has a central impact mechanism arranged to rotate about a rotation axis and at least one stator extending circumferentially about the impact mechanism. Each stator has one or more openings through which material impacted by the impact mechanism can pass. A housing extends about the stator and between an upper plate and a base plate. Each stator is located within the housing and can be moved between a first position and a bypass position. In the first position a lower edge of one or more stator is on the base plate and an upper edge extends to at least an inside surface of the upper plate. In the bypass position the stator is moved to where the lower edge of the stator is lifted from the base plate to form a gap through which material entering the device can flow radially beyond the stator.