Vibrating Disc Mill Eccentric Shaft Phase Offset Balancing
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Solution Overview
Problem
Vibrating disc mills experience inefficient grinding due to friction losses, leading to overheating, inhomogeneous grinding results, and reduced mill lifespan, particularly when handling varying loads, which complicates material analysis and requires optimization of vibration and balancing systems.
Innovation Solution
A device and method that utilize a balancing mass unit coupled to the eccentric shaft drive with a phase offset greater than 180°, allowing for optimized vibration control and compensation of imbalances, ensuring smooth operation across varying loads by adjusting the phase offset between the balancing mass unit and the grinding chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional eccentric shaft drive is used to generate oscillating movement in the grinding chamber, then grinding function is achieved, but friction losses cause overheating and inhomogeneous grinding results
Solution Approach 1:
The patent applies counterweight balancing by coupling a balancing mass unit to the eccentric shaft drive, where the balancing mass unit generates counteracting vibrations to compensate for the harmful friction losses and overheating effects in the grinding chamber
Solution Approach 2:
The patent changes the phase offset parameter to greater than 180° between the grinding chamber and balancing mass unit, optimizing the vibration characteristics to reduce friction losses and improve grinding efficiency while preventing overheating
2Reliability
If eccentric shafts with standard balancing are used, then basic operation is maintained, but vibration optimization is insufficient under varying loads
Solution Approach 1:
The patent implements dynamic vibration optimization by allowing the phase offset between the grinding chamber and balancing mass unit to be adjustable or variable, enabling the system to adapt to different load conditions and maintain optimal vibration characteristics across varying operational requirements
3Reliability
If a balancing mass unit with phase offset greater than 180° is coupled to the eccentric shaft drive, then vibration optimization and operational stability are improved, but device complexity increases
Solution Approach 1:
The patent merges the balancing mass unit with the existing eccentric shaft drive system, integrating the vibration optimization function into the conventional drive mechanism to minimize additional complexity while achieving improved operational stability
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 approach enhances the mill's operational stability and flexibility, enabling consistent vibration and grinding performance even under changing conditions, extending the mill's service life and improving material analysis precision.
Implementation Method 1
at least two synchronously revolving eccentric shafts; and set up with at least one balancing mass unit coupled to the eccentric shaft drive for imbalance compensation; wherein the balancing mass unit is coupled to the eccentric shaft drive in such a way that a phase offset of greater than 180° can be set between an eccentric maximum of the balancing mass unit and an eccentric maximum of the grinding chamber
Implementation Method 2
The grinding chamber can be coupled to the eccentric shafts by means of at least one material-elastic linkage unit
Data Source
Figure 1A~1C
Figure 2A~2D
Figure 3
AI summary
The invention relates to a vibrating disc milling device (10) for comminuting feed material, comprising: a milling housing (11); a milling system (13) which is arranged in the milling housing in an oscillating manner and which comprises a milling chamber (13.1) and at least one millstone movably arranged in the milling chamber; at least one eccentric shaft drive (14), which is mounted in the milling housing and generates the oscillating movement in the milling chamber, and at least two eccentric shafts (15); and at least one compensating mass unit (16) which is coupled to the eccentric shaft drive and is designed to compensate for an imbalance; wherein the compensating mass unit is coupled to the eccentric shaft drive such that a phase offset of more than 180°, in particular more than 185°, can be set between the eccentric maximum of the compensating mass unit and the eccentric maximum of the milling chamber, thus allowing vibrationally optimized operating conditions. The invention additionally relates to a method for vibrationally regulating a vibrating disc milling device and to the use of eccentric shafts (15) with a phase offset.