Grain Fractionation via Air-Current Assisted Particle Separation
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Solution Overview
Problem
Current grain processing technologies face challenges in achieving high-throughput, non-clogging, and cost-effective separation of grain fractions enriched in dietary fiber, starch, and protein, with existing methods often resulting in low extraction rates and high capital costs.
Innovation Solution
The use of air-current assisted particle separation (ACAPS) technology, which employs dynamic air currents created under vacuum and high-pressure pulsing to fluidize grain particles and filter them through micron-sized sieves, preventing clogging and enabling efficient separation of coarse and fine fractions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fine sieves with openings of 100 μm or less are used for separation, then separation efficiency is improved, but clogging occurs and throughput decreases
Solution Approach 1:
The patent employs air-current assisted particle separation (ACAPS) technology that uses pneumatic forces to prevent clogging of fine sieves. Air currents are generated to keep particles in motion and prevent them from accumulating and blocking the sieve openings, thereby maintaining both high separation efficiency with fine sieves and adequate throughput.
Solution Approach 2:
The patent utilizes vibration mechanisms to agitate particles during the sieving process. This mechanical vibration prevents particle accumulation on the sieve surface and maintains open passages, allowing fine sieves to operate at high throughput without clogging while preserving separation precision.
2Manufacturing precision
If pin-milling and air-classification (PMAC) technology is used for separation, then separation of finer particulates is improved, but extraction rates and yields of targeted components deteriorate
Solution Approach 1:
The ACAPS technology uses optimized pneumatic air currents that selectively separate particles based on their physical properties while maintaining high extraction rates. The air currents are carefully controlled to prevent loss of targeted components while achieving efficient separation of finer particulates.
Solution Approach 2:
The patent employs parameter changes in the air current characteristics (velocity, pressure, flow pattern) to optimize both separation precision and extraction rate. By adjusting these parameters, the system achieves efficient separation of fine particles while maintaining high yields of desired components.
3Manufacturing precision
If PMAC technology is used for commercial scale production, then separation capability is improved, but capital costs deteriorate
Solution Approach 1:
The ACAPS technology achieves effective particle separation using pneumatic principles that can be implemented with more cost-effective equipment compared to traditional PMAC systems. The air current generation and sieve configuration allow for reduced capital investment while maintaining high separation capability for commercial applications.
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
This method significantly increases the yield of high-quality beta-glucan concentrates and other enriched fractions at reduced costs, improving the efficiency and throughput of grain processing operations while minimizing equipment wear and maintenance.
Implementation Method 1
There is a first exit port in a sidewall of the bottom chamber for exit of air and exit of a first grain fraction from the bottom chamber when the interior of the sieving apparatus is under vacuum via the exit port
Implementation Method 2
The use of air-current assisted particle separation (ACAPS) technology, which employs dynamic air currents created under vacuum and high-pressure pulsing to fluidize grain particles
Implementation Method 3
dynamic air currents created under vacuum and high-pressure pulsing to fluidize grain particles
Data Source
AI summary
A method for fractionating a milled grain product into coarse and fine fractions includes providing a sieving apparatus with a bottom chamber divided from a top chamber by a sieve, an inlet port in the top chamber, a top chamber cover defined by a plurality of openings, and a first exit port in the bottom chamber, and applying vacuum suction to the sieving apparatus. The vacuum suction is configured to draw grain particles through the inlet port into the top chamber, generate substantially horizontal airflow in the top chamber via the inlet port; and generate substantially vertical airflow in the top chamber via the plurality of openings, wherein the substantially horizontal airflow and the substantially vertical airflow combine to generate turbulence which fluidizes the grain particles in the upper chamber and prevents blockage of the sieve; and drawing fine grain particles through the sieve and out of the bottom chamber via the first exit port under the vacuum suction and collecting a fine grain particle fraction.