Seeding System Pneumatic Distribution and Volumetric Metering
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Solution Overview
Problem
Current seeding systems either require precise seed placement, which is not feasible in high-rate applications, or they lack the precision needed for optimal yield due to volumetric metering, leading to inefficiencies in seed distribution and placement.
Innovation Solution
A metering and distribution system that combines volumetric metering with a pneumatic distribution system, using air streams to convey seeds through conduits and nozzles, allowing for both precise placement and high-rate seeding by maintaining a predetermined seed quantity in the hopper and using sensors to control seed flow, ensuring adequate supply and preventing overfilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If volumetric metering is used for high-rate seeding, then seeding rate is improved, but manufacturing precision of seed placement deteriorates
Solution Approach 1:
The system segments the seeding process into two independent stages: volumetric metering for bulk seed delivery and pneumatic singulation for precise individual seed placement. The volumetric meter delivers seeds in bulk to a pneumatic distribution system, which then singulates and places individual seeds with precision. This segmentation allows each subsystem to optimize for its specific function without compromise.
Solution Approach 2:
The pneumatic distribution system acts as an intermediary between the volumetric meter and the seed placement point. It receives bulk seed flow from the volumetric meter, processes individual seeds through pneumatic conveyance, and delivers them with precise placement. This intermediary enables the transition from volumetric to precision delivery.
2Manufacturing precision
If singulating technologies are used for precise seed placement, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system uses pneumatic mechanisms to singulate and convey individual seeds through controlled air streams. Pneumatic tubes and fans create airflow that picks up and transports single seeds to precise placement locations. This pneumatic approach simplifies the singulation process compared to mechanical alternatives while maintaining high precision.
3Productivity
If air streams are used to convey seeds, then productivity is improved, but loss of substance increases due to potential seed overdispersion
Solution Approach 1:
The system incorporates sensors that monitor seed flow and placement in real-time, providing feedback to the control system. When seeds are detected or placement conditions change, the system adjusts the pneumatic airflow and volumetric metering rates to prevent overdispersion. This closed-loop control ensures high productivity while minimizing seed loss.
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
This system enables precise seed placement while accommodating high-rate seeding applications, optimizing yield by maintaining a consistent seed supply and preventing seed overdispersion, thus enhancing the efficiency of seed distribution.
Implementation Method 1
an air stream flowing into the pick-up assembly entrains product therein and conveys product downstream through a plurality of conduits
Implementation Method 2
each pneumatic distribution tower includes an inlet extending upwards to a plurality of radially spaced outlets
Data Source
AI summary
A product distribution system includes a product on demand pick-up assembly including a hopper. The hopper is configured such that an air stream flowing into the pick-up assembly entrains product therein and conveys product downstream through a plurality of conduits. The product distribution system further includes a container for storing product prior to delivery of product to the pick-up assembly and a meter and conveyor assembly configured to move product from the container to the pick-up assembly hopper such that an amount of product greater than a predetermined quantity is maintained in the pick-up assembly hopper during operation of the system.