Pneumatic Accelerator for Precision Seed Spacing

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Solution Overview

Problem

Existing precision pneumatic seed drills face challenges in maintaining consistent sowing spacing at high sowing speeds, leading to irregular seed distribution and reduced productivity.

Innovation Solution

A sowing element with a rectilinear conduit and a pneumatic accelerator is designed, featuring an inclined selector disc and a pneumatic flow accelerator to enhance seed transport efficiency, reducing sensitivity to vibrations and impacts, and maintaining regularity of seed spacing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sowing speed is increased to improve productivity, then productivity increases, but sowing spacing regularity deteriorates

Engineering Contradiction:

Improvesowing speedVSAvoidsowing spacing regularity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies pneumatic principles by using a pneumatic accelerator that introduces compressed air into the seed transport conduit. This creates a pneumatic flow that accelerates seeds uniformly, enabling high sowing speeds while maintaining spacing regularity through controlled aerodynamic forces rather than mechanical contact.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The patent changes the physical state and motion parameters of seed transport by transitioning from gravitational/free-fall motion to pneumatic-accelerated motion. The pneumatic accelerator modifies air pressure and flow velocity parameters to control seed acceleration, allowing precise speed regulation that maintains spacing regularity even at high sowing speeds.

Inventive Principle:

Principle #35Parameter changes

2Loss of time

If sowing speed is increased to reduce transit time, then productivity improves, but sensitivity to vibrations and impacts increases

Engineering Contradiction:

Improvetransit timeVSAvoidsensitivity to vibrations and impacts

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The pneumatic accelerator uses compressed air flow to suspend and accelerate seeds through the transport conduit, replacing mechanical contact-based transport. This pneumatic suspension reduces seed contact with conduit walls, minimizing impacts and vibration sensitivity while enabling faster transit times.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The patent introduces compressed air as an intermediary medium between the seed and the transport conduit. This air cushion acts as a mediator that reduces direct mechanical contact, thereby decreasing sensitivity to vibrations and impacts during high-speed transport while maintaining efficient seed movement.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If conventional seed transport is used to maintain simplicity, then device complexity remains low, but sowing spacing regularity deteriorates at high speeds

Engineering Contradiction:

Improvetransport system complexityVSAvoidsowing spacing regularity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent integrates a pneumatic accelerator system that uses compressed air injection into the existing seed transport conduit. This approach maintains relatively simple device structure while dramatically improving sowing spacing regularity through pneumatic acceleration, avoiding complex mechanical positioning systems.

Inventive Principle:

Principle #29Pneumatics and hydraulics

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 significantly increases sowing speed while maintaining the regularity of seed spacing, reducing transit time and sensitivity to vibrations and impacts, thus enhancing productivity.

Implementation Method 1

a pneumatic accelerator which is arranged along the conduit for transporting the seed, characterized in that the pneumatic accelerator is positioned between the intermediate portion and the terminal portion of the conduit for transporting the seed

Methodology Applied

Scientific EffectPneumatic acceleration: Pressure Gradient

Implementation Method 2

This flow accelerator produces inside the conduit a high-speed flow of air which greatly accelerates the movement of the seed

Methodology Applied

Scientific EffectCompressed air flow: Pressure Gradient

Implementation Method 3

the conduit for transporting the seed is constructed to be rectilinear and coaxial to the greatest possible extent with a vertical orientation (with respect to the sowing ground) so as to prevent such deviations of travel of the seed in the transport conduit as to involve impacts and friction between the seed and the wall of the transport conduit itself

Methodology Applied

Scientific EffectFriction reduction: Friction

Data Source

PatentUS10959368B2Sowing element for precision pneumatic seed drills

Publication Date: 2021.03.30 MASCHIO GASPARDO

AI summary

A sowing element for precision pneumatic seed drills. The sowing element includes a conduit for transporting the seed with an initial portion which is proximal to a device for isolating the seed, an intermediate portion which extends in continuation of the initial portion, and a terminal portion for dispensing the seed; and a pneumatic accelerator which is arranged along the conduit for transporting the seed. The pneumatic accelerator is positioned between the intermediate portion and the terminal portion of the conduit for transporting the seed.