Grain Spreader Layout for Uniform Silo Drying Airflow
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Solution Overview
Problem
Current spreaders for rice grain in silos cause uneven drying due to interlocking (rice packing) and debris buildup, leading to improper air flow and reduced market value of the end-product.
Innovation Solution
A spreader device with a base, primary opening, and angled barrier wall featuring peripheral openings and optional chutes, which directs grain flow into a single column initially and then disperses it radially to prevent packing and debris accumulation, ensuring even distribution and airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rice grain is spread using conventional electrically powered spreaders or gravity-based spreaders, then the grain is dispersed around the tank, but the rice grains interlock (rice packing) and prevent proper air flow, causing uneven drying
Solution Approach 1:
The spreader device divides the grain flow into multiple separate streams using multiple openings arranged in a circular pattern. Each opening creates an individual flow column that falls to the grain pile, preventing the grains from interlocking while still achieving even distribution across the silo floor.
Solution Approach 2:
The invention introduces a vertical dimension to the grain dispersion process by creating multiple elevated flow columns that fall vertically onto the grain pile. This vertical dropping mechanism prevents horizontal spreading that causes interlocking, while the radial arrangement of openings ensures even distribution without debris buildup at perimeters.
2Productivity
If rice grain is diverted into multiple different piles using conventional spreaders, then the grain is distributed, but debris builds up around the perimeter of each pile and obstructs air flow during drying
Solution Approach 1:
The device segments the grain flow through multiple openings positioned at specific angles around the circular base. This segmentation creates controlled flow columns that deposit grain in a radial pattern, preventing debris accumulation at pile perimeters while maintaining efficient distribution across the entire silo floor.
Solution Approach 2:
The multiple flow columns act as intermediaries between the single inlet and the grain pile surface. Each flow column delivers grain to a specific radial location, distributing the load evenly and preventing the formation of large peripheral debris zones that would obstruct air flow during the drying process.
3Reliability
If hand leveling is used in small silos (18-30 feet diameter), then even drying can be achieved, but the process is not commercially viable for larger silos (36-60 feet diameter)
Solution Approach 1:
The spreader device enables self-leveling of the grain pile by automatically distributing incoming grain evenly across the entire silo floor through its multiple radial openings. The system performs the leveling function autonomously as grain flows through the device, eliminating the need for manual intervention while maintaining drying uniformity in large-scale commercial silos.
Solution Approach 2:
The invention scales the leveling function to large silos by introducing vertical flow columns that radially distribute grain across the entire floor area. This three-dimensional distribution mechanism replaces two-dimensional hand leveling, making uniform drying commercially viable for large-diameter silos while maintaining the same drying uniformity results.
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 device ensures proper air flow and uniform drying of rice grain, preventing cracking and meeting moisture content requirements, thus maintaining the quality and market value of the rice.
Implementation Method 1
The other spreader uses gravity to sprinkle grain into multiple different piles
Implementation Method 2
grain is dispersed throughout the silo through the one or more peripheral openings, thereby creating multiple flow columns and grain piles that are located radially away from the primary flow column
Data Source
AI summary
The present invention is a spreader device used to fill a container or silo with grain that comprises a shaped body including a primary opening with a removable cover and several angled, peripheral openings located a distance from the primary opening. The spreader functions by allowing grain to pass through its primary opening to form a single flow column and grain pile and then having the primary opening closed via the cover to direct grain to the one or more peripheral openings, thereby creating multiple flow columns and grain piles that are located radially away from the primary flow column and grain pile.