Pneumatic Seeder Air Flow Deflector for Dust Control
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Solution Overview
Problem
Pneumatic seeders generate air that expels harmful particles, including insecticides, into the atmosphere, violating environmental standards and causing dust that interferes with the seeder's operation and visibility for the driver, leading to imprecise seeding.
Innovation Solution
Implementing means to dampen and/or divert the air flow from the suction fan's discharge outlet, such as a deflector or flap, to reduce the kinetic energy and direct the air flow parallel to the ground, preventing dust formation and particle dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If air is expelled from the discharge outlet at high speed to meet environmental standards, then particle dispersion is reduced, but dust formation and harmful particle propagation increase
Solution Approach 1:
A deflector element is introduced as an intermediary component between the air outlet and the ground. This deflector redirects the air flow path, causing air to travel parallel to the ground rather than directly onto it, thereby preventing dust formation while maintaining particle containment
Solution Approach 2:
The air flow direction is changed from a vertical dimension (directly onto ground) to a horizontal dimension (parallel to ground). This dimensional shift allows the air to be expelled at high speed without causing dust formation, as the kinetic energy is directed sideways rather than downward
2Quantity of substance
If air flow speed is increased to prevent particle propagation, then environmental standards are met, but dust around the seeder and tractor increases
Solution Approach 1:
The deflector serves as a mediator that decouples the relationship between air flow speed and dust formation. By redirecting the flow path, high-speed air expulsion no longer directly impacts the ground, eliminating dust generation while preserving particle containment capabilities
3Object-affected harmful factors
If air is directed towards the ground to meet discharge requirements, then particle dispersion is limited, but visibility for the driver and operational precision deteriorate
Solution Approach 1:
The air flow is redirected from a downward vertical path to a horizontal path parallel to the ground. This dimensional change prevents dust cloud formation that would obscure the driver's view and interfere with seeding precision, while still containing particles through the controlled horizontal flow
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
Effectively reduces dust around the seeder and tractor, meeting environmental standards by minimizing the dispersion of harmful particles and maintaining operational precision during seeding.
Implementation Method 1
the suction fan 20, which is for example connected to the power output connection of the tractor or to a motor, for example a hydraulic motor, is put into action in order to generate low pressure within the compartments demarcated in the box by the perforated disc. The seed contained in the reservoir 18 is then sucked out
Implementation Method 2
means for damping and/or diverting the flow of air coming from said means for extracting, said means for damping and/or diverting being placed downstream from the end of said means for extracting air
Implementation Method 3
such as a deflector or flap, to reduce the kinetic energy and direct the air flow parallel to the ground, preventing dust formation and particle dispersion
Data Source
AI summary
A pneumatic seeder is provided, which is configured to be fixedly attached to a farming machine. The seeder includes an element for contacting with the ground, an element for storing a product to be sown, a pneumatic distributor of said product, a suction fan having at least one air inlet connected to the pneumatic for distributor and at least one air discharge outlet, an air extractor connected to the discharge outlet, the end of the air extractor leading out to face the ground. The seeder includes a damper and/or diverter for damping and/or diverting the flow of air coming from the air extractor. The damper and/or diverter is placed downstream from the end of the air extractor.