U-Shaped Conduit Seed Hopper for Strip Tillage
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Solution Overview
Problem
Conventional strip tillage machines face challenges in precision seed delivery, particularly for large seeds like maize and sunflower seeds, due to issues with pneumatic seed distribution systems that can lead to blockages and uneven seed distribution, and providing separate seed hoppers for each delivery member is impractical due to space and weight constraints.
Innovation Solution
A seed hopper system featuring a primary seed hopper with a metering unit and secondary seed hoppers connected via a U-shaped conduit member, where the inlet is below the outlet and aligned with air flow, allowing for precise seed delivery and adjustable air flow regulation through the accumulation of seeds acting as a valve mechanism, ensuring consistent seed supply to multiple seed delivery tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a pneumatic seed distribution system is used to deliver seed to multiple seed delivery members, then seed can be distributed from a single primary hopper, but the system becomes prone to blockages and uneven seed distribution
Solution Approach 1:
The system divides the seed delivery function into two parts: a primary seed hopper for bulk storage and multiple secondary seed hoppers (one per seed delivery member) for localized delivery. This segmentation allows the primary hopper to serve as a reservoir while secondary hoppers ensure reliable, blockage-free delivery to each delivery tube, resolving the contradiction between system simplicity and delivery reliability.
Solution Approach 2:
Secondary seed hoppers act as intermediary components between the primary seed hopper and the seed delivery tubes. These intermediaries receive seed from the primary hopper and independently manage seed flow to each delivery point, preventing blockages from affecting the entire system and ensuring consistent seed distribution.
2Measurement precision
If separate seed hoppers are provided for each seed delivery member, then precise seed delivery is achieved, but the weight and space requirements become unacceptable
Solution Approach 1:
The seed storage function is segmented between a single large primary hopper for bulk storage and small secondary hoppers for precision delivery. The secondary hoppers are much smaller and lighter than a full-size hopper would be, yet they provide the necessary precision for each delivery point by receiving controlled amounts of seed from the primary hopper.
Solution Approach 2:
The secondary seed hoppers are nested within the overall machine structure in a space-efficient manner, with each secondary hopper positioned close to its corresponding seed delivery tube. This nesting approach minimizes the space and weight requirements while maintaining precise seed delivery capability at each location.
3Productivity
If pneumatic distribution is used to supply seed to secondary hoppers, then seed can reach all delivery points, but air flow variations cause blockages when secondary hoppers become full
Solution Approach 1:
The system incorporates a feedback mechanism where the state of secondary seed hoppers (full or not full) influences air flow distribution. When a secondary hopper becomes full, the air flow to that hopper is automatically reduced or stopped, preventing blockages. This feedback control maintains stable air flow throughout the system and ensures continuous reliable operation.
Solution Approach 2:
The air flow distribution system is designed to be dynamic, automatically adjusting air flow rates to each secondary hopper based on real-time conditions. When secondary hoppers reach capacity, the system dynamically reduces air flow to those points, preventing overfilling and blockages while maintaining efficient seed distribution to hoppers that still need seed.
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 ensures precise and consistent seed delivery to multiple seed delivery tubes, reducing blockages and weight issues, allowing for efficient operation of strip tillage machines by maintaining a constant seed supply and adjusting air flow based on seed accumulation, thereby overcoming previous pneumatic system limitations.
Implementation Method 1
a pneumatic seed delivery system which conveys seed from a primary seed hopper to a plurality of secondary seed hoppers
Implementation Method 2
a U-shaped conduit member (73) provided with an opening (75) in the wall thereof, the opening communicating directly with the interior of the secondary seed hopper
Implementation Method 3
allowing for precise seed delivery and adjustable air flow regulation through the accumulation of seeds acting as a valve mechanism
Data Source
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AI summary
The object of the present invention is a seed hopper for a strip tillage machine, the hopper comprising a container (57) for seed, a cover (71) for the container, and a substantially U-shaped conduit member (73) having an inlet arm and an outlet arm, the substantially U-shaped conduit member (73) being attached to the cover (71) and being formed with an opening (75) communicating with the interior of the container (57) of the hopper. The present invention also relates to a method of operating a seed hopper for a strip tillage machine, a strip tillage machine and a method .of operating a strip tillage machine.