Fertilizer Conditioner Wings for Consistent Dispense Opening
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Solution Overview
Problem
Variable rate dry fertilizer dispensing systems face inaccuracies at higher conveyor speeds due to increased friction and compaction of fertilizer particles, leading to a smaller effective dispense opening and inconsistent fertilizer application, which is exacerbated in precision farming systems.
Innovation Solution
A fertilizer conditioner with angled wings or fins is introduced to deflect compacted particles out of the main flow path, maintaining a consistent effective dispense opening across various conveyor speeds, allowing for accurate determination of dispense rates without altering the physical size of the dispense opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conveyor speed is increased to improve productivity, then the fertilizer dispensing rate increases, but the friction and compaction of fertilizer particles increases causing the effective dispense opening to decrease
Solution Approach 1:
A conditioner is introduced as an intermediary device between the conveyor and the dispense opening. The conditioner includes a flow path with angled surfaces that redirect fertilizer particles before they reach the dispense opening, preventing compaction and ensuring consistent flow regardless of conveyor speed. This mediator component resolves the contradiction by decoupling the conveyor speed from the effective dispense opening size.
Solution Approach 2:
The invention changes the physical state and flow characteristics of the fertilizer particles by introducing them through a conditioner with specific angled surfaces. This modifies how the particles behave at the dispense opening, maintaining a constant effective opening size across different conveyor speeds by altering the particle flow parameters before dispensing.
2Measurement precision
If an automated movable gate is used to manipulate the dispense opening size to maintain accurate dispense rates, then the dispense rate accuracy is improved, but the system cost and complexity increase
Solution Approach 1:
The invention extracts the problem of maintaining constant effective opening size from the dispense opening itself by addressing it upstream in the conditioner. Instead of manipulating the opening size at the point of dispensing, the solution removes the compaction issue before the fertilizer reaches the opening, eliminating the need for automated gates.
Solution Approach 2:
Instead of adjusting the dispense opening size to compensate for speed-related compaction (the conventional approach), the invention inverts the approach by preventing compaction from occurring in the first place through the conditioner's flow path design. This eliminates the need for feedback control and automated adjustment mechanisms.
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
Ensures uniform fertilizer dispensing per conveyor length and accurate rate calculation across a wide range of conveyor speeds, eliminating the need for costly and unreliable automated gate adjustments.
Implementation Method 1
the increased speed of the conveyor causes increased friction and the fertilizer particles tend to collide together and compact as the fertilizer attempts to move through the dispense opening
Data Source
AI summary
A conditioner for a fertilizer box configured to convey compacted particles away from a conveyor path of fertilizer particles. The conditioner may include a plurality of wings for deflecting a portion of a flow of fertilizer particles from a conveyor path. A method includes determining a constant effective dispense opening for a fertilizer box having the conditioner and using the constant effective dispense opening to determine a fertilizer dispense rate.