Seed Drill Bypass Opening for Turbulence Control
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Solution Overview
Problem
Conventional seed drills with grain separating devices directly on dispensing elements face challenges in maintaining precise longitudinal spacing of seeds due to space constraints and turbulence in compressed air seed lines, leading to irregular seed distribution.
Innovation Solution
Designing the seed drill with a grain separating device centrally located and using seed lines with a bypass opening and flow guide elements to minimize turbulence and ensure uniform grain entrainment in the compressed air flow, allowing for precise control of seed spacing even with long seed lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the grain separating device is placed centrally under the storage container with long seed lines to dispensing elements, then space requirements at dispensing elements are reduced, but longitudinal spacing precision of grains deteriorates due to turbulence and speed variations in compressed air flow
Solution Approach 1:
A flow guide element is introduced as an intermediary component between the grain separating device and the seed lines. This flow guide element shapes and directs the compressed air flow, ensuring uniform grain entrainment and reducing turbulence that would otherwise cause spacing variations in the long seed lines
Solution Approach 2:
The flow guide element modifies the physical parameters of the compressed air flow, specifically controlling flow velocity and pressure distribution in the transfer area. By optimizing these flow parameters, the system maintains precise longitudinal spacing despite the length of the seed lines
2Productivity
If grains are fed into compressed air flow of seed lines, then grains are transported to dispensing elements, but small scatters in feed timing cause relatively larger scatters in longitudinal spacing
Solution Approach 1:
The flow guide element acts as a mediator between the grain feed opening and the compressed air flow. It creates a controlled transition zone that synchronizes grain entry with air flow velocity, ensuring that even with timing variations, grains are uniformly entrained and maintain consistent longitudinal spacing
Solution Approach 2:
The flow guide element prepares the compressed air flow in advance before grains enter the seed line. By pre-shaping the flow profile and velocity distribution, the system compensates for potential timing variations in grain feeding, ensuring uniform spacing is maintained throughout transport
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 enables precise and uniform longitudinal spacing of seeds across a row, reducing irregularities and maintaining accurate spacing despite long seed lines, thereby improving seed distribution efficiency.
Implementation Method 1
seed lines which are subjected to compressed air and lead from the grain separating device to the dispensing elements
Implementation Method 2
optimize the infeed or transfer area of the seed line in terms of flow and to design it with little turbulence or as little turbulence as possible
Implementation Method 3
a flow guide element, which accelerates and/or shapes the compressed air flow (22)
Implementation Method 4
the flow-guiding element can form a nozzle (24), the cross-sectional area of which, viewed in the direction of flow, initially tapers down to a cross-section of the smallest diameter (25) and then widens again. The compressed air flow in the transfer area (14) is significantly accelerated by the nozzle (24) mentioned
Data Source
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AI summary
The present invention relates to a seed drill (100) with a seed singulation device (12) for singulating the seeds to be sown and compressed air-operated seed lines (11) for transporting the singulated seeds from the seed singulation device to application elements (10), wherein the seed singulation device can be connected to the seed lines via feed openings (23), so that seeds fed into the seed lines from the seed singulation device are carried along in the seed lines by the compressed air flow (22). According to the invention, the seed lines (11) each have at least one bypass opening (28) for releasing compressed air in the transfer area between the seed singulation device (12) and the seed lines.