Seed Distributor Frustoconical Restricting Assembly Even Dispersion
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Solution Overview
Problem
Existing seed treatment applicators result in uneven seed flow and treatment fluid application due to seeds falling disproportionately, leading to longer mixing times and waste of treatment fluid.
Innovation Solution
A restricting assembly within the seed distribution housing, featuring a downwardly converging frustoconical surface with a lower retaining portion, a porous portion, and an upper retaining portion, which defines multiple seed flow paths to ensure even seed distribution and application, adjustable to accommodate varying seed flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conical distributing assembly is used to direct seed flow into an annular veil, then seed distribution is improved, but uneven seed flow over the conical housing results in uneven treatment fluid application
Solution Approach 1:
A restricting assembly is introduced as an intermediary component between the seed inlet and the distributing assembly. This restricting assembly with its frustoconical surface and flow paths regulates and conditions the seed flow before it reaches the distributing assembly, ensuring uniform flow distribution across the conical surface and thereby achieving uniform treatment fluid application.
Solution Approach 2:
The restricting assembly changes the flow parameters of the seed by controlling its velocity and distribution pattern. The frustoconical surface with specific geometry (lower retaining portion, porous portion, upper retaining portion) modifies the seed flow characteristics to ensure even distribution over the distributing assembly, resolving the uniformity issue.
2Manufacturing precision
If seed flow rate is restricted to achieve even distribution, then treatment fluid application uniformity is improved, but seed flow rate is vertically restricted for extended periods at higher flow rates
Solution Approach 1:
The restricting assembly segments the seed flow into multiple paths: a first seed flow path defined by the lower retaining portion and conical surface, and a second seed flow path through the porous portion. This segmentation allows different portions of seed flow to be managed separately, enabling uniform distribution while accommodating varying total flow rates without excessive restriction.
Solution Approach 2:
The system dynamically adapts to different seed flow rates. At low flow rates (up to 700-1000 pounds per minute), seed flows primarily through the first flow path. At higher flow rates (700-1800 pounds per minute), seed flows through both the first and second flow paths, allowing the system to maintain uniform distribution across a wide range of productivity levels.
3Reliability
If a rotating mixing drum is used to compensate for uneven treatment application, then treatment uniformity is improved, but mixing time increases and treatment fluid is wasted
Solution Approach 1:
The restricting assembly performs the uniformization action preliminarily, before the seed reaches the distributing assembly and treatment housing. By ensuring even seed flow distribution at the source, the system eliminates the need for subsequent mixing operations to correct unevenness, thereby reducing mixing time and preventing treatment fluid waste.
4Productivity
If the porous portion with seed outlet openings is added to minimize seed retention, then seed flow efficiency is improved, but the complexity of the restricting assembly increases
Solution Approach 1:
The restricting assembly incorporates a porous portion with multiple seed outlet openings that allow seed to pass through while maintaining flow regulation. This porous structure provides an additional flow path (second seed flow path) that enhances seed flow efficiency and prevents excessive retention, while the integrated design keeps the overall complexity manageable.
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 solution ensures a substantially even annular veil of seed, optimizing seed treatment fluid application and reducing waste, while maintaining efficient seed flow across a range of rates from 700 to 1800 pounds per minute.
Implementation Method 1
Seed flows into the applicator under the force of gravity
Data Source
AI summary
Existing seed treatment applicators distribute seed into an uneven annular veil and results in wasted seed treatment fluid and unnecessarily long mixing/drying times. We developed a seed distribution apparatus comprising a partially porous, frustoconical restricting assembly that is mounted above and partially receives a conical distributing assembly. The orientation of the distributor and restricting assemblies provides three different seed flow paths to provide a substantially even annular veil of seed to the seed treatment housing.