Adjustable Louver Sieve for Grain Cleaning
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Solution Overview
Problem
Current grain cleaning systems in agricultural combines face challenges in achieving optimal grain separation due to limited adjustability of sieve openings, leading to suboptimal grain throughput and increased grain loss, particularly for varying grain sizes and conditions.
Innovation Solution
A sieve with an adjustable spacing system that allows for customizable positioning and angular orientation of louvers, enabling precise adjustment of opening sizes and air flow, accommodating different grain sizes and conditions without the need for multiple sieves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sieve opening size is increased to allow more grain throughput, then grain loss is reduced, but MOG (material other than grain) contamination increases
Solution Approach 1:
The patent implements adjustable louver spacing that can be dynamically reconfigured based on grain size and cleaning requirements. The louver spacing adjustors allow the sieve opening size to be changed during operation, enabling optimization of both throughput and separation precision for different grain types and conditions
Solution Approach 2:
The system changes the physical parameter of louver spacing to adapt to different grain sizes and cleaning requirements. By adjusting the spacing between louvers, the system optimizes the balance between grain throughput and MOG contamination for various operating conditions
2Adaptability or versatility
If fixed sieve configurations are used for different grain sizes, then device complexity is reduced, but adaptability to varying grain conditions deteriorates
Solution Approach 1:
The patent creates a universal sieve system with adjustable louver spacing that can handle multiple grain types and sizes with a single device. The adjustors allow one sieve to perform the functions of multiple fixed configurations, eliminating the need for multiple specialized sieves
Solution Approach 2:
The sieve is divided into multiple independent louver sections, each with its own adjustor. This segmentation allows individual adjustment of different sections to optimize performance for specific grain sizes and conditions, providing flexibility without requiring complete sieve replacement
Data Source
AI summary
A sieve for a grain cleaning system of an agricultural combine, including a system providing enhanced adjustability of spacing, including capacities for quickly and easily varying a number of rows of sieve fingers, spacing between the rows, and angular orientation of the fingers, such that better sieve performance, and cleaning action above the sieve, can be achieved for a particular grain or seed size and other conditions, particularly very large sizes and very small sizes.