Rotary Collider Air Mill for Fine Powder Production
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Solution Overview
Problem
Current rock crushing machines are inefficient in reducing large material sizes to fine powders, requiring multiple processing steps and causing significant wear and tear, limiting their scalability and effectiveness.
Innovation Solution
A rotary collider air mill that uses high-speed chaotic air currents to fracture materials into smaller pieces by repeatedly colliding them within a scalable, polygonal housing with a rotating sprocket and blades, capable of achieving a 1/1000 reduction in material size in a single step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional rock crushing machines use hardened steel to smash and pulverize rocks, then particle size reduction is achieved, but the machines suffer from great wear and tear requiring frequent part replacement
Solution Approach 1:
The patent replaces the traditional mechanical impact system (hardened steel jaws crushing rocks) with a pneumatic system. High-speed air jets (supersonic气流) are used to propel material particles into collisions with each other, achieving size reduction without direct mechanical contact between crushing components and material. This eliminates wear on crushing parts while maintaining effective particle size reduction.
Solution Approach 2:
The patent introduces air (gas medium) as an intermediary to transfer energy and momentum for material crushing. Instead of steel directly impacting rock, compressed air serves as the mediator that accelerates material particles and facilitates their mutual collision, reducing wear on the crushing mechanism while achieving the desired particle size reduction.
2Manufacturing precision
If traditional rock crushing machines process materials through multiple steps, then fine powder is achieved, but processing time and handling requirements increase significantly
Solution Approach 1:
The patent merges multiple crushing stages into a single integrated pneumatic chamber. Material enters once and undergoes progressive size reduction through repeated collisions in the high-speed air stream, achieving fine powder in one continuous process rather than requiring multiple sequential crushing stages with intermediate handling.
Solution Approach 2:
The patent maintains continuous pneumatic action within the crushing chamber, where high-speed air jets continuously propel and recirculate material particles, ensuring uninterrupted collision and size reduction. This continuous process eliminates the start-stop nature of traditional multi-stage crushing with intermediate handling, significantly reducing processing time.
3Manufacturing precision
If traditional crushing machines are designed for specific size ranges, then certain materials are processed effectively, but scalability to different material sizes is limited
Solution Approach 1:
The patent enables scalability by allowing adjustment of key pneumatic parameters: air pressure, air flow rate, and chamber dimensions. By changing these parameters, the same basic pneumatic crushing design can effectively process materials across a wide range of input sizes and achieve different output particle sizes, providing versatility without requiring completely different machine designs.
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 rotary collider air mill effectively reduces input materials to fine powders with particles smaller than 100 microns, outperforming existing ball, hammer, and jet mills by minimizing wear and allowing for scalable operation.
Implementation Method 1
create high velocity chaotic air currents within an enclosure that will force input materials to repeatedly collide with each other at very high speeds
Implementation Method 2
capable of moving air at speeds in the transonic range of about 600 to 768 miles per hour (mph) and approaching the speed of sound
Data Source
AI summary
A rotary collider air mill apparatus that uses accelerated air moving at high velocities as the primary reduction medium is described. The apparatus produces turbulent air currents and shear waves within a polygonal housing whereby solid particles introduced into the housing repeatedly collide with each other and are fractured into smaller particles. An exemplary rotary collider air mill apparatus may include a polygonal housing having a front plate and a back plate and 5 or more side plates, a drive shaft passing through the central portion of the polygonal housing, a sprocket mounted on the drive shaft and having arms extending radially from a central hub, and 3 or more blade sections attached to the arms. The rotary collider air mill apparatus is scalable upward or downward in sizes ranging between 12 inches and 144 inches in diameter with the housing and internal mechanisms sized proportional to one another.