Seed Singulation Device Dual Compressed Air Supply
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Solution Overview
Problem
Existing singulation devices for grains, such as seeds and fertilizer, face challenges in adapting to different grain types and soil conditions due to reliance on a single compressed air supply, leading to clogging, inconsistent transport, and interference between airflows, especially in damp conditions.
Innovation Solution
A singulation device with two separate compressed air supplies: one for creating a pressure differential to hold grains in recesses and another to accelerate their transport through a grain line, ensuring pneumatic separation and independent adjustment of both processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single compressed air supply is used for both generating pressure differential and accelerating grain transport, then the device complexity is reduced, but the reliability deteriorates due to airflow interference and inability to adapt to different grain types
Solution Approach 1:
The single compressed air supply system is segmented into two independent compressed air supplies: a first compressed air supply for generating pressure differential to hold grains in recesses, and a second compressed air supply for accelerating grain transport through the grain line. This segmentation allows independent optimization of each function without airflow interference.
2Productivity
If compressed air acceleration is used for grain transport, then the productivity is improved, but the device becomes unsuitable for certain grain types and damp conditions due to clogging
Solution Approach 1:
The system provides dynamic adaptability by allowing independent adjustment of the second compressed air supply parameters (pressure, flow rate) to match different grain types and transport requirements. The independent control enables the system to adapt to various conditions including damp conditions without clogging issues.
3Speed
If additional compressed air supply is provided in discharge area, then the grain transport acceleration is improved, but the airflow from different supplies negatively influences each other
Solution Approach 1:
The harmful airflow interaction is eliminated by extracting the two compressed air supplies into completely independent systems with separate control. The first supply operates in the chamber to create pressure differential, while the second supply operates in the grain line for acceleration, preventing mutual interference between airflows.
4Reliability
If high overpressure levels are used for singulation, then the singulation effectiveness is improved, but the energy consumption increases and adaptability to different grain types decreases
Solution Approach 1:
The system enables parameter optimization by independently adjusting the pressure levels of both compressed air supplies according to different grain types. The first supply pressure can be optimized for effective singulation while the second supply pressure can be adjusted for efficient transport, achieving high effectiveness with minimized energy consumption.
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
Enables universal use for various grain types and soil conditions by preventing airflow interference, ensuring smooth and efficient transport of grains without affecting the pressure differential-based singulation, even in damp conditions.
Implementation Method 1
grains can be held in the recesses based on the pressure differential generated by the first compressed air supply
Implementation Method 2
accelerate the transport of the grains through the grain line with compressed air provided by the second compressed air supply
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The invention relates to an individualizing device (10), in particular for assembling on an agricultural row unit (50) and for individualizing grains (S) on the basis of a pressure difference, comprising a chamber (B1), preferably for receiving the grains (S), - a rotatable individualizing element (150), wherein the chamber (B1) is delimited in at least one direction by a wall formed by the individualizing element (150), and grains (S) are transported from the chamber (B1) to a dispensing region (B2) by means of the individualizing element (150), and - a first compressed air supply (D1) which opens into the chamber (B1) and by means of which the chamber (B1) can be supplied with compressed air in order to generate at least one pressure difference. The individualizing element (150) has a plurality of recesses (151) for the grains (S), and the grains (S) can be held in the recesses (151) on the basis of the pressure difference using the compressed air provided by the first compressed air supply. Individualized grains (S) are dispensed into a grain line (K) in the dispensing region (B2) in order to distribute individualized grains (S) on or in cropping soil. In order to provide an improved and/or alternative individualizing device, preferably an individualizing device which can be used universally for different grain types and/or for different soil conditions for example, a second compressed air supply (D2) is provided in order to prevent a flow of air out of the chamber (B1) into the grain line (K) and in order to transport the grains (S) through the grain line (K) in an accelerated manner by means of the compressed air. The invention additionally relates to a method for dispensing grains in an individualized manner and to an agricultural row unit.