Centrifugal Fertilizer Spreader Material Divider for Asymmetrical Swath Control

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Solution Overview

Problem

Existing agricultural centrifugal spreaders are complex and costly, with systems like dual feed gates and conveyors requiring intricate control systems to achieve asymmetrical swaths, often resulting in misapplication and operational inefficiencies.

Innovation Solution

A centrifugal spreader with a material divider that adjusts the stream of material arbitrarily to achieve symmetrical or asymmetrical spread patterns, using a movable linkage and actuator to direct material to either or both centrifugal disks, allowing for precise control without the need for complex control systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dual feed gates and conveyors are used to achieve asymmetrical swath, then asymmetrical distribution is improved, but device complexity increases

Engineering Contradiction:

Improveasymmetrical swath capabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The material stream is segmented into two separate streams by the material divider, with each stream directed to a separate centrifugal disk. This segmentation allows independent control of material distribution to each disk, enabling asymmetrical swath patterns without requiring complex dual conveyor systems or feed gates.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A material divider is introduced as an intermediary component between the single conveyor and the centrifugal disks. This divider acts as a mediator that splits and directs material flow arbitrarily to different disks, providing asymmetrical distribution capability while keeping the conveyor system simple and unified.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If dual conveyors and hydraulic systems are used, then asymmetrical swath control is improved, but cost increases

Engineering Contradiction:

Improveswath width controlVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges the material division function into a simple mechanical divider component rather than requiring separate conveyor systems. The single conveyor feeds material to the divider, which then distributes material to multiple centrifugal disks, eliminating the need for duplicate conveyors and hydraulic systems while achieving the same asymmetrical swath control.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The material divider is designed as a simple, inexpensive mechanical component with moving parts that can be easily manufactured and replaced if needed. This replaces expensive hydraulic valves, cylinders, and sensors with a straightforward mechanical linkage system that achieves the same functional outcome at lower cost.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Ease of operation

If metering orifice is positioned upstream, then material flow control is improved, but timing lag increases

Engineering Contradiction:

Improvematerial flow meteringVSAvoidcontrol response time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The material divider is positioned immediately at the conveyor discharge point, allowing real-time division and direction of material flow as it exits the conveyor. This eliminates the need for upstream metering and anticipatory control, as the material is directed to the appropriate disk at the moment of discharge, achieving instantaneous response to control signals.

Inventive Principle:

Principle #10Preliminary action

4Adaptability or versatility

If one feed gate is closed, then asymmetrical swath is achieved, but material leakage and stress on structures increases

Engineering Contradiction:

Improveswath width adjustmentVSAvoidmaterial containment

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The material divider employs dynamic, movable components that can adjust the division ratio and direction of material flow in real-time. Rather than closing gates or stopping conveyors, the system dynamically redirects material streams to achieve asymmetrical swath patterns while maintaining continuous, controlled flow to both disks, preventing leakage and reducing structural stress.

Inventive Principle:

Principle #15Dynamics

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 efficient and precise material distribution, minimizing misapplication and enhancing operational efficiency while maintaining a simple and cost-effective construction, adaptable to various types of particulate products and agricultural implements.

Implementation Method 1

centrifugal spreader with a material divider that adjusts the stream of material arbitrarily to achieve symmetrical or asymmetrical spread patterns

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentUS12295281B2System and method for controlling distribution pattern of centrifugal fertilizer spreaders

Publication Date: 2025.05.13 HIGHWAY EQUIPMENT CO

AI summary

A spreader with a material divider that is adjustable to change a stream of material which flows in an arbitrary manner to the centrifugal disk(s) to achieve a desired symmetrical or asymmetrical spread pattern.