Variable Oscillation Milling Device for Consistent Particle Size
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Solution Overview
Problem
Conventional oscillating mills face challenges in maintaining optimal milling parameters due to changes in material properties caused by temperature and humidity, leading to inconsistent particle size and low throughput.
Innovation Solution
A milling device with a variable oscillation angle and frequency rotor movement, controlled by a drive unit, allows for real-time adjustment of milling parameters and enhanced material flow direction, enabling efficient processing and high throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional oscillating mills use fixed milling parameters, then the device structure is simple, but the particle size consistency deteriorates due to material property changes during milling
Solution Approach 1:
The patent implements dynamic adjustment of milling parameters during the milling operation. The rotor oscillation amplitude and frequency are varied in real-time based on material properties, transforming the static milling process into a dynamic one that adapts to changing conditions, thereby maintaining consistent particle size without requiring overly complex pre-programmed control systems
Solution Approach 2:
The patent changes physical parameters of the milling process by varying the rotor oscillation amplitude and frequency during operation. This allows the system to respond to material property changes (temperature, humidity) by adjusting key milling parameters, achieving consistent particle size output while avoiding the need for completely complex adaptive control mechanisms
2Productivity
If conventional mills operate with standard configuration, then the device complexity is low, but the throughput of crushed material is limited
Solution Approach 1:
The patent introduces a new dimensional aspect to the milling process by directing material flow in a direction substantially parallel to the rotor shaft, rather than perpendicular to it. This dimensional change in material flow configuration, combined with the concentric screen design, significantly increases throughput capacity without requiring proportionally complex structural modifications
Solution Approach 2:
The milling chamber is designed to perform multiple functions: it not only contains the milling operation but also directs material flow parallel to the rotor shaft and facilitates gravity-assisted material movement. This multi-functionality increases throughput while avoiding the need for separate dedicated components for each function
3Manufacturing precision
If milling parameters are adjusted during operation to maintain particle size consistency, then particle size uniformity improves, but the control system complexity increases
Solution Approach 1:
The patent employs periodic oscillation of the rotor with variable amplitude and frequency during the milling operation. This periodic action inherently provides the necessary parameter variation to maintain consistent particle size, as the oscillating motion creates repeated crushing cycles that uniformly process material regardless of property changes, reducing the need for complex continuous control systems
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 consistent particle size and increased throughput by dynamically adjusting milling parameters and utilizing a concentric screen design that leverages gravity and vibration to facilitate continuous material flow.
Implementation Method 1
the drive unit is designed to impart an oscillation movement to the rotor around the shaft, the oscillation angle being variable during the milling operation
Implementation Method 2
the milling chamber is configured to direct the product to be milled in a direction substantially parallel to the rotation shaft of the rotor
Data Source
AI summary
A milling device for implementing a milling operation including a milling unit having a body including a milling chamber that can be filled with a material to be milled, a rotor mounted so as to be able to rotate around a shaft in the body, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation. The drive unit is designed to impart an oscillating movement to the rotor around the shaft, the oscillation angle being variable during the milling operation. The milling chamber is configured to direct the product to be milled in a direction substantially parallel to the rotation shaft of the rotor.