Row Unit Manifold Cleanout Using Reversible Pneumatic Flow
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Solution Overview
Problem
Conventional agricultural machines face challenges in efficiently cleaning residual commodity from row units due to manual and time-consuming processes, especially when multiple row units are involved, leading to potential machine damage and accessibility issues.
Innovation Solution
A system with a blower for forward air flow and a vacuum assembly for reverse air flow, combined with a controller and valve mechanism, automatically cleans residual commodity from row units by switching between forward and reverse air flow paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cleaning process is used for row units, then the user can access and clean the hoppers, but the process is lengthy and time-consuming
Solution Approach 1:
The patent replaces the manual mechanical cleaning process with an automated pneumatic system. A blower delivers compressed air through hoses into the row unit hoppers, automatically fluidizing and ejecting residual commodity without requiring manual access or intervention. This substitution of mechanical manual cleaning with pneumatic automation directly resolves the contradiction by eliminating the time-consuming manual process while maintaining cleaning effectiveness.
Solution Approach 2:
The system enables self-service cleaning where the agricultural machine cleans its own row units autonomously. The blower and hose system is integrated into the machine, allowing it to perform its own maintenance function without external assistance. This self-service capability eliminates the need for operators to manually clean multiple row units, significantly reducing the time required while maintaining accessibility to all hoppers.
2Ease of operation
If manual cleaning is performed on machines with multiple row units, then cleaning can be done, but space constraints prevent user access to row unit hoppers
Solution Approach 1:
The patent introduces a flexible hose as an intermediary element that bridges the gap between the compressed air source and the row unit hoppers. The hose can be extended and positioned to reach hoppers that are otherwise inaccessible due to the machine's compact multi-row structure. This intermediary allows the cleaning system to overcome spatial constraints without requiring structural changes to the machine itself.
Solution Approach 2:
The system uses pneumatic power delivery through flexible hoses to reach inaccessible hoppers. The compressed air system can be directed through extended hoses to any row unit hopper regardless of its position on the machine, eliminating the need for physical access. This pneumatic approach resolves the contradiction by allowing cleaning of all hoppers while maintaining the complex multi-row machine structure.
3Reliability
If residual commodity remains in hoppers, then the machine structure is maintained, but the commodity and machine can be damaged over time
Solution Approach 1:
The system performs preliminary cleaning action by delivering compressed air to fluidize and eject residual commodity from hoppers after each use. This preliminary removal of residue prevents the progressive damage that would occur over time if commodity were allowed to remain. By acting promptly to clear hoppers, the system protects both the remaining commodity and the machine structure from degradation before damage can occur.
Solution Approach 2:
The system converts the potential harm of residual commodity into a benefit by using the commodity's own properties against it. Compressed air is used to fluidize the residual commodity, turning the stuck residue into a mobile stream that can be ejected from the hopper. This converts the harmful stationary residue into a beneficial removable flow, protecting the machine and preventing commodity degradation.
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
Automated cleaning process efficiently removes residual commodity, reducing manual effort and preventing machine damage, while ensuring consistent commodity distribution.
Implementation Method 1
a blower configured to provide an air flow through the tank line and the row unit line to transfer commodity from the tank, through the manifold assembly, and to the hopper of the row unit
Implementation Method 2
a vacuum assembly configured to provide an air flow through the row unit line and the return line to transfer commodity from the hopper of the row unit, through the manifold assembly, and to the tank
Data Source
AI summary
An agricultural machine comprises a central commodity storage tank configured to store commodity, a row unit having a hopper configured to receive the commodity from the tank and a meter configured to distribute the commodity from the hopper to the soil. A manifold assembly is positioned between the central storage tank and the hopper and includes a controllable valve configured to direct commodity. The controller moves the valve between positions to direct commodity from the central storage tank to the hopper and either from the hopper to the central storage tank or from the hopper to a seed bin separate from the central storage tank. The controller may move the valve in response to measured characteristics associated with the distribution of commodity or in response to input from a user interface.