Adjustable Exhaust Gate for Pneumatic Material Deceleration
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Solution Overview
Problem
Existing material decelerating devices in agricultural air distribution systems fail to effectively separate particulate materials from air streams, leading to unintended ejection of lighter materials and inconsistent air flow control across different delivery lines.
Innovation Solution
A decelerating device with a duct member and adjustable exhaust openings, featuring a gate member that can be rotated to vary the cumulative exposed area of exhaust openings, and a perforated screen member with interchangeable apertures, allowing for customizable air flow adjustment to prevent excessive air exhaustion and ensure consistent material delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cyclonic separator is used to separate material from conveying air, then material separation is achieved, but lighter materials are inadvertently exhausted out of the upper air vent instead of the product delivery opening
Solution Approach 1:
The invention extracts the harmful effect by providing a separate exhaust opening that specifically vents conveying air away from the product delivery opening. This separates the air exhaust function from the material delivery function, preventing lighter materials from being inadvertently exhausted while maintaining effective material separation.
2Device complexity
If fixed exhaust openings are used in decelerating devices, then device simplicity is maintained, but air flow control cannot be adjusted for different delivery lines with varying air flow rates
Solution Approach 1:
The invention applies dynamics by making the exhaust opening adjustable through a gate member that can be rotated or moved to vary the opening area. This allows the decelerating device to adapt to different air flow rates in various delivery lines while maintaining a relatively simple overall device structure.
3Object-affected harmful factors
If air is exhausted from delivery lines, then material ejection is prevented, but excessive air exhaustion negatively affects the flow rate for carrying particulate material through other delivery lines
Solution Approach 1:
The invention applies parameter changes by allowing adjustment of the exhaust opening area to optimize the balance between preventing material ejection and maintaining adequate air flow for material delivery. The gate member enables tuning of the exhaust parameter to achieve optimal performance without excessively reducing flow rates in other delivery lines.
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
Enables precise control of air flow across different delivery lines, preventing material ejection and maintaining optimal particulate material flow rates by allowing adjustable air exhaustion, thereby improving the efficiency of particulate material distribution in agricultural systems.
Implementation Method 1
a gate member supported on the duct member so as to be movable relative to the exhaust openings to vary a cumulative exposed area of the exhaust openings
Implementation Method 2
for at least partially exhausting the conveying air through a diffuser opening in the device separate from the particulate material deposited into the material outlet
Data Source
AI summary
A decelerating device is mounted in series within a pneumatic particulate material delivery passage that communicates from a particulate material supply to a material outlet of a furrow opener for depositing particulate material into a furrow formed by the furrow opener. The decelerating device has a duct member extending longitudinally between opposing open ends for connection in line with the pneumatic particulate material delivery passage. A plurality of exhaust openings communicating through a peripheral wall of the duct member to exhaust air therethrough. A gate member is supported on the duct member so as to be movable relative to the exhaust openings to vary a cumulative exposed area of the exhaust openings. A perforated screen member spans across the exhaust openings having a smaller aperture size than the exhaust openings to ensure small particulate materials being conveyed do not escape through the exhaust openings.