Distributed Positive Displacement Pumps for Uniform Row Fluid Application
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Solution Overview
Problem
Existing fluid distribution systems in agriculture face challenges such as uneven distribution, high costs, and potential failures due to extensive plumbing and continuous monitoring of flow meters and valves, leading to inefficiencies and waste.
Innovation Solution
A liquid application system utilizing distributed positive displacement pumps and switching valves for precise control of fluid flow, with optional flow meters and modular components for individual row control, enabling uniform pressure and flow across an agricultural toolbar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If tanks are located on or near the tractor, then fluid distribution is simplified, but extensive plumbing is required to transport fluid between the pump and rows
Solution Approach 1:
The patent divides the fluid distribution system into multiple independent row units, each with its own pump and tank. This segmentation eliminates the need for extensive plumbing connecting all rows to a central source, as each row unit operates independently with localized fluid storage and pumping capability.
Solution Approach 2:
Each row unit is equipped with its own pump and fluid control mechanisms, allowing local adjustment and optimization of fluid application for each specific row. This localizes the fluid control functionality, eliminating the need for long-distance fluid transport through complex plumbing systems.
2Device complexity
If a main system pump is used, then the system structure is simplified, but product flow rate and pressure drop or change at varying points along the toolbar, creating uneven distribution
Solution Approach 1:
Instead of one main pump, the system uses multiple individual pumps distributed along the toolbar, with each pump serving a specific row or section. This segmentation ensures that each pump delivers fluid at consistent pressure and flow rate to its designated discharge point, eliminating the pressure drops and flow variations that occur in centralized pump systems.
Solution Approach 2:
By positioning pumps at multiple locations along the toolbar rather than at a single central point, the system creates equipotential conditions for fluid pressure and flow across different discharge points. Each pump maintains consistent operating conditions, ensuring uniform fluid distribution throughout the entire toolbar length.
3Measurement precision
If flow meters and product regulating valves are continually monitored and adjusted, then desired application rate is achieved, but system cost and chance for failure increase
Solution Approach 1:
The positive displacement pumps are designed to inherently provide precise metering of fluid flow based on their mechanical displacement characteristics. This self-metering capability eliminates or reduces the need for external flow meters and continuous electronic monitoring systems, while still achieving accurate application rates through the pumps' inherent flow control properties.
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 system achieves precise, cost-effective, and reliable fluid application by reducing plumbing complexity, minimizing waste, and allowing for targeted, intermittent fluid placement, thereby enhancing application accuracy and reducing environmental impact.
Implementation Method 1
a plurality of positive displacement pumps distributed along the manifold so as to be proximate to the plurality of discharges
Data Source
AI summary
The disclosed apparatus, systems and methods relate to fluid distribution systems. The fluid distribution systems being made up of a plurality of positive displacement pumps disposed on a fluid distribution manifold and proximate to the tank and the point of product discharge. The system optionally has a valve system for precision control of fluid discharge.