Grinding Device with Multi-Axis Trajectory for Solid Comminution
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Solution Overview
Problem
Existing grinding devices lack the ability to efficiently adjust the intensity of grinding for solids with varying sizes or wide size distributions, and they often require bearings that come into contact with the solids or ground material.
Innovation Solution
A device with a container that is driven along a trajectory curve generated by superimposing movements along at least two axes at different frequencies and/or with phase offset, containing at least one loosely contained grinding body to comminute solids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a ball mill with an inclined vertical axis is used, then grinding can be performed, but the device cannot be rotated and has limited adaptability for different solid sizes
Solution Approach 1:
The container is driven along a trajectory curve generated by superimposing reciprocating movements along at least two axes at different frequencies, transforming the static grinding configuration into a dynamic one that can adapt to different solid sizes and shapes, resolving the contradiction between adaptability and structural simplicity
Solution Approach 2:
The reciprocating movements along multiple axes create periodic trajectory curves that generate varying grinding intensities and patterns, enabling the device to handle solids with different size distributions without requiring complex structural modifications
2Adaptability or versatility
If a cylindrical container with vertical axis is moved on a circular path by eccentric drive, then grinding can be performed, but the device cannot adjust grinding intensity for different materials
Solution Approach 1:
The container follows a dynamically generated trajectory curve through superimposed reciprocating movements, allowing real-time adjustment of grinding intensity by modifying the frequency and phase relationships between axes, providing both adaptability and operational simplicity
Solution Approach 2:
By changing the frequency ratios and phase offsets of the reciprocating movements along different axes, the grinding intensity can be adjusted for different materials and solid sizes without mechanical reconfiguration, maintaining ease of operation while enhancing adaptability
3Reliability
If bearings are used in the grinding device, then mechanical support is provided, but the bearings come into contact with solids or ground material causing contamination
Solution Approach 1:
The grinding device eliminates bearings that would contact the solids or ground material, extracting the problematic component from the system while maintaining mechanical support through the trajectory curve mechanism that moves the container without requiring internal bearings, thus preventing contamination
Solution Approach 2:
The trajectory curve mechanism acts as an intermediary that provides the necessary mechanical support and motion without direct contact between supporting components and the ground material, allowing reliable operation while preventing contamination of the product
4Device complexity
If grinding bodies are loosely contained in the container, then the container can be driven along trajectory curves, but the grinding bodies may move uncontrollably
Solution Approach 1:
The loosely contained grinding bodies are stabilized through the controlled dynamic motion of the container along trajectory curves, where the reciprocating movements create consistent grinding patterns that prevent uncontrolled motion while maintaining operational simplicity
Solution Approach 2:
The periodic reciprocating movements along multiple axes create predictable gravitational and inertial patterns that keep the grinding bodies in controlled positions during the grinding cycle, preventing uncontrolled movement while preserving the simplicity of the container drive mechanism
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 effectively comminutes solids by accelerating the grinding body and solids relative to the container, allowing for adjustable grinding intensity and continuous adaptation to the material, without the need for bearings that contact the solids.
Implementation Method 1
The trajectory curve accelerates the at least one grinding body, which can move freely in the container, relative to the container
Implementation Method 2
solids contained in the container are comminuted by the acceleration against the container wall
Implementation Method 3
the reciprocating movement of the container drives the grinding body to move against the inner wall of the container
Data Source
AI summary
Device for comminuting solids, comprising a container which is driven to reciprocate along a trajectory curve which can be generated by superimposing the movement along at least two axes, which are at an angle to each other, at different frequencies and/or different speeds along each of the axes, with at least one grinding body loosely contained in the container.