Mechanical-Pneumatic Meter for Sowing Regularity

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Solution Overview

Problem

Conventional seed or fertilizer meters often experience synchronization issues and irregular distribution of granular materials due to impact against unloading tube walls, leading to time lags and desynchronization in material fall, resulting in inconsistent sowing distances.

Innovation Solution

A mechanical-pneumatic meter system that generates a pressurized cold or hot air stream to circulate throughout the system, counteracting hopper pressurization, allowing materials to be applied by gravitational force without aspiration or suction, ensuring continuous and synchronized material fall across the entire work width.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional meters are used for seed distribution, then the metering mechanism can control seed release, but the granular material impacts against the unloading tube inner wall causing desynchronization and irregular distribution

Engineering Contradiction:

Improvesowing regularityVSAvoidcontinuous synchronization

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

A flexible tube is introduced as an intermediary element between the unloading tube and the seed distribution point. This flexible tube acts as a mediator that receives seeds from the rigid unloading tube and delivers them to the furrow, preventing direct impact against hard surfaces that cause desynchronization. The flexible nature of this tube allows it to absorb impact variations and maintain continuous seed flow.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

A pneumatic system using compressed air is introduced to create a controlled airflow through the unloading tube and flexible tube. This pneumatic flow serves multiple functions: it prevents material impact by providing a cushioning air stream, maintains continuous synchronized seed delivery by controlling the flow dynamics, and ensures reliable seed distribution by using air pressure to guide seeds smoothly to the target location.

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Productivity

If aspiration or suction is used to load and unload materials, then materials can be transported through the system, but environmental harm occurs and materials cannot be reused

Engineering Contradiction:

Improvematerial transport efficiencyVSAvoidenvironmental impact

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system inverts the conventional approach by using pressurization instead of suction. Rather than creating negative pressure to pull materials through the system, compressed air is used to create positive pressure that pushes materials through the unloading tube and flexible tube. This inversion eliminates the need for aspiration, preventing environmental harm and enabling material reuse while maintaining transport efficiency.

Inventive Principle:

Principle #13The other way round (Inversion)

3Adaptability or versatility

If conventional distributors are used, then seeds can be distributed, but combined downloadings of multiple materials cannot be performed

Engineering Contradiction:

Improvecombined material distributionVSAvoiddistributor structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system achieves multi-functionality by using a single flexible tube that can handle multiple different materials (seeds, fertilizers, granulates) through the same unloading mechanism. The flexible tube and pneumatic system are designed to accommodate various material types and delivery requirements, allowing the same basic structure to perform multiple distribution functions without requiring separate specialized distributors for each material type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 mechanical-pneumatic meter system achieves improved, synchronized, and continuous material distribution, reducing environmental impact by allowing reuse of excess materials and eliminating the need for aspiration or suction processes.

Implementation Method 1

a turbine in operative communication with the lower compartment to generate a pressurized cold or hot air stream that circulates throughout the system

Methodology Applied

Scientific EffectPressurized air stream: Pressurisation

Implementation Method 2

allowing materials to be applied by gravitational force without aspiration or suction

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS20250153958A1Mechanical - pneumatic meter of solid materials for agricultural machines and implements

Publication Date: 2025.05.15 INDECAR MAQUINARIAS SA

AI summary

A mechanical-pneumatic meter of solid materials for agricultural machines and implements that allows for an improved metering of the solid materials without the need of a forced suction or aspiration, covering the entire work width in a much more practical, simple and safe way, whether by metering the material either individually or combined with another type, and reducing, in turn, the negative impacts on the environment since it makes it possible to reuse those materials that have not been unloaded.