Agricultural Granular Distributor Pressure Balancing for Singulation
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Solution Overview
Problem
Existing agricultural distribution machines with pneumatic conveying systems struggle to maintain consistent pressure differences for distributing granular materials, which varies based on the type of material, limiting their flexibility and reliability.
Innovation Solution
The system incorporates an adjustment device to control and preset static pressure levels between the air and supply lines, using drive units and control systems to manage airflow and supply airflow, ensuring consistent pressure differentials for flexible material distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flow generation device with fixed pressure difference is used, then the system structure is simple, but the adaptability to different granular materials is poor
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed pressure difference system with a variable pressure difference system. The flow generation device can dynamically adjust the pressure difference between the air line and supply line based on the type of granular material being distributed. This allows the system to adapt to different materials (seeds, fertilizer, etc.) while maintaining a relatively simple overall structure, resolving the contradiction between adaptability and complexity.
2Adaptability or versatility
If separate flow generation devices are used for pneumatic conveying and singulation pressurization, then the pressure control flexibility is improved, but the system complexity increases
Solution Approach 1:
The patent applies the universality principle by designing a single flow generation device that can perform multiple functions: it generates both the pneumatic conveying airflow and the pressurization airflow for the singulation units. This multi-functional approach provides pressure control flexibility while avoiding the need for separate flow generation devices, thus resolving the contradiction between pressure control flexibility and system complexity.
3Reliability
If a fixed pressure difference is maintained between air line and supply line, then the system operation is simple, but the reliability for different material types decreases
Solution Approach 1:
The patent applies the parameter changes principle by enabling the pressure difference parameter to be adjusted according to the type of granular material being distributed. Instead of maintaining a fixed pressure difference, the system can modify the pressure parameters (air line pressure, supply line pressure, and their difference) to optimize performance for different materials. This improves reliability across different material types while maintaining operational simplicity through automated or semi-automated parameter adjustment.
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 approach enhances the flexibility and reliability of agricultural distribution machines by allowing them to handle a wide variety of granular materials effectively, reducing back pressure and ensuring trouble-free conveying.
Implementation Method 1
a pressure differential is generated at the openings of a singulation element... by means of overpressure or underpressure
Implementation Method 2
Pneumatic conveying systems are frequently employed to supply the individual singulation units with the granular material to be distributed
Data Source
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AI summary
The invention relates to an agricultural distribution machine (10) and a method for operating an agricultural distribution machine (10) for distributing granular material (24), comprising a singulation system (60) with at least two singulation devices (62), wherein the singulation devices are functionally connected to an air line (30) with an air flow (32) for pressurizing the respective singulation element (66), further comprising a conveying system (50) for conveying granular material, with feed lines (40) to supply granular material to the respective singulation device by means of a feed air flow (42), further comprising a flow generation system (70) which is configured to generate the air flow and/or the feed air flow.wherein an adjustment device (80) is provided which is configured to influence, preferably to control and/or preset, a difference in the pressure levels, preferably the static pressure levels, caused by the respective airflow and/or the respective supply airflow, between at least one air duct and a supply duct.