Synchronized Granular Dispensing Assembly for Constant Seed Spacing
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Solution Overview
Problem
Existing seed distribution systems in seeders suffer from variability in inter-seed distances due to differences in seed shape and size, leading to precision issues and back-rolling, especially at higher working speeds, and are not suitable for small granular products or resistant to wear.
Innovation Solution
A distribution assembly with synchronized transfer means using alveolar wheels that maintain a constant distance between seeds by immobilizing them during transfer, comprising alveoli that receive one seed at a time and adjust the distance based on seed type, ensuring precise placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If identical circular cells are used on the distribution disc to accommodate various seed shapes and sizes, then versatility is improved, but inter-seed distance precision deteriorates due to variable seed positioning
Solution Approach 1:
The patent applies local quality by providing different cell geometries (circular, oval, rectangular) for different seed types within the same distribution system. Each cell shape is optimized for specific seed characteristics, allowing precise seed positioning while maintaining versatility across multiple seed varieties.
Solution Approach 2:
The patent implements dynamics through adjustable cell geometries and positions on the distribution disc. The system can dynamically adapt cell configurations based on seed type, enabling precise inter-seed distance control while accommodating various seed shapes and sizes through reconfigurable cell arrangements.
2Ease of operation
If a guide chute is used to direct seeds to the ground, then seed placement is improved, but precision deteriorates due to back-rolling at high speeds
Solution Approach 1:
The patent applies periodic action through the rotational motion of the distribution disc, which delivers seeds at regular intervals to the guide chute. This periodic delivery synchronizes with the seed placement mechanism, ensuring consistent spacing and reducing back-rolling effects by controlling the timing and frequency of seed release.
Solution Approach 2:
The guide chute acts as an intermediary element that receives seeds from the distribution disc and directs them to the ground. The chute is designed with specific geometric features that control seed trajectory and minimize back-rolling, serving as a mediator between the distribution mechanism and the ground placement point.
3Ease of operation
If repeated impacts against chute walls occur during seed fall, then seed guidance is achieved, but inter-seed distance variability increases due to disruptions in seed deposit
Solution Approach 1:
The patent employs a flexible seed guide surface within the chute that can adapt to seed impacts without causing disruptions. The flexible material absorbs impact forces and maintains smooth seed flow, preventing the kind of disruptions that would cause inter-seed distance variability while still providing effective guidance.
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 maintains consistent inter-seed distances and reduces back-rolling, allowing precise seed placement even at high working speeds, suitable for various seed sizes and reducing wear, thus enhancing the accuracy and reliability of seed distribution.
Implementation Method 1
The vacuum applied to one side of the distribution disc makes it possible to capture, from the reservoir, the seeds in each of the cells of the disc, and thus to isolate them.
Implementation Method 2
The individualized seeds, thus captured, are then discharged, one by one, by the rotation of the distribution disc, bringing the cells containing the individualized seed, towards an area free of vacuum.
Implementation Method 3
the transfer means being synchronized in speed and position with the distribution means, and the transfer means capturing the granular products in an individualized manner and immobilizing them within the transfer means so as to keep each granular product spaced a determined and constant distance from each other
Implementation Method 4
Since the drop height is constant for a given sowing element, in a system relying solely on gravity, the horizontal speed can reach a maximum optimum value and will never exceed this value.
Data Source
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AI summary
The present invention concerns an assembly (1) for dispensing granular products to be dispensed to the ground, comprising dispensing means (3) for dispensing said granular products in individualised form, conveying means (4) for conveying said individualised granular products to the ground, transfer means (5) for transferring said individualised granular products from the dispensing means (3) to the conveying means (4), characterised in that the transfer means (5) are synchronised in speed and position with the dispensing means (3) and in that the transfer means (5) capture the granular products in an individualised manner and immobilise them within the transfer means (5) so as to keep each granular product spaced apart from each other by a determined and constant distance, in said transfer means (5) and during the transfer of the granular products to the conveying means (4). The invention also relates to a seeding element (24) and a sowing machine comprising the dispensing assembly (1) according to the invention, as well as a method for dispensing granular products to the ground using one or more dispensing assemblies (1), seeding element (24) or sowing machine according to the invention.