Material Processing Barrel with Spiral Impact Flow for Seed Devitalization
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Solution Overview
Problem
Current weed seed destruction technologies in agricultural harvesters face limitations in throughput capacity, integration complexity, and energy efficiency, particularly in handling fibrous materials like chaff residues, leading to incomplete seed devitalization and grain loss.
Innovation Solution
A barrel-like structure with a textured inner impact surface and spiral flow path, utilizing a rotating impact mechanism to process material, allowing for differential treatment of constituents based on density and size, and incorporating adjustable apertures and louvers for control, enhances throughput and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If roller mill technology is used to destroy weed seeds, then seed devitalization is achieved, but throughput capacity is limited due to reliance on separation means to reduce residue material
Solution Approach 1:
The system divides the residue processing into two stages: first using a hammer mill to fragment and devitalize weed seeds in the residue, then using a separator to remove the processed material. This segmentation allows the hammer mill to handle bulk residue directly without requiring prior separation, thereby increasing throughput capacity while maintaining seed devitalization effectiveness.
Solution Approach 2:
The hammer mill performs preliminary fragmentation and devitalization of weed seeds in the residue before the separation process. By pre-processing the residue to break down fibrous materials and destroy seeds, the system enables higher throughput as the subsequent separation can handle larger volumes of pre-processed material efficiently.
2Reliability
If hammer mill is used to devitalise weed seeds in crop residues, then comprehensive seed destruction is achieved, but device complexity increases due to integration requirements
Solution Approach 1:
The system merges the hammer mill and separator into a single integrated unit that can be mounted on the harvester. The hammer mill chamber and separator are combined in one housing, sharing common features such as the drive mechanism and material feed system. This merging reduces overall integration complexity compared to having separate systems, while maintaining comprehensive seed destruction capability.
Solution Approach 2:
The integrated unit performs multiple functions: the hammer mill devitalizes weed seeds and fragments fibrous residue, while the separator simultaneously removes the processed material from the stream. This multi-functionality in a single integrated device reduces the number of separate components needed, thereby reducing integration complexity while achieving reliable seed destruction.
3Adaptability or versatility
If hammer mill processes fibrous materials like chaff, then material processing capability is improved, but energy consumption increases
Solution Approach 1:
The hammer mill performs preliminary fragmentation of fibrous chaff and weed seeds before the separation process. By pre-breaking down the fibrous materials into smaller, lighter fragments, the system reduces the energy required for subsequent separation operations. This preliminary action enables the system to handle diverse fibrous materials effectively while controlling overall energy consumption through more efficient processing stages.
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 effectively increases impact surface area and processing capacity, ensuring comprehensive weed seed devitalization while minimizing grain loss and energy waste, facilitating integration into harvesters for efficient agricultural applications.
Implementation Method 1
an impact mechanism capable of rotating about the central axis of the barrel and arranged to impact material entering the barrel and accelerate the material to impact the impact surface
Implementation Method 2
The impact surface is formed with a plurality of valleys or protrusions or both valleys and protrusions configured to guide, or otherwise induce motion of, the material
Implementation Method 3
creates a spiral flow path of the material between an inlet opening and an outlet opening that are formed in the inner surface and spaced along the axis
Data Source
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AI summary
A material processing system (10) comprises barrel (12) also referred to hereinafter having a milling or impact surface (14) and a central axis (16). The impact surface (14) is impervious, in that material cannot pass through the surface (14), but rather is contained by the surface. An impact mechanism (18) is located within barrel and is rotates about the central axis (16). The system (10) has inlet openings (20a) and (20b) formed in the barrel (12) at axially spaced locations along the axis (16). At least one outlet opening (22) is formed in the barrel (12) at a location intermediate of the inlets (20). The impact mechanism (18) includes a plurality of hammers (52) mounted on shaft (52) which rotates about the axis (16).