Rotatable Sample Holder for Homogeneous Milling
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Solution Overview
Problem
Existing laboratory mills struggle to achieve homogeneous results during sample treatment, particularly when multiple samples are treated simultaneously, due to variations in the effective radius of sample vessel orbits.
Innovation Solution
The laboratory mill incorporates complementary coupling geometries on the sample holder and holding device, allowing the sample holder to be coupled in multiple orientations relative to the axis of rotation and/or oscillation, thereby altering the effective radius of the sample vessel orbits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sample vessels are treated simultaneously in a laboratory mill, then productivity increases, but homogeneity of treatment results deteriorates due to variations in effective radius of sample vessel orbits
Solution Approach 1:
The sample holder is designed to be rotatable relative to the swing arm, allowing the effective radius of sample vessel orbits to be dynamically adjusted during operation. This enables optimization of treatment homogeneity while maintaining high productivity by treating multiple samples simultaneously.
Solution Approach 2:
The invention changes the parameter of effective radius by providing multiple positioning positions for the sample holder. By selecting different positioning positions, the effective radius of sample vessel orbits can be adjusted to achieve homogeneous treatment results while processing multiple samples in parallel.
2Device complexity
If the sample holder is fixed in a single orientation, then device complexity is reduced, but adaptability deteriorates as different sample configurations cannot be optimized
Solution Approach 1:
The sample holder incorporates a rotatable mechanism with multiple positioning positions, transforming a static structure into a dynamic one. This allows the system to adapt to different sample configurations and optimization requirements without significantly increasing device complexity.
Solution Approach 2:
The rotatable sample holder with multiple positioning positions serves multiple functions: it can optimize treatment homogeneity, accommodate different sample vessel arrangements, and adapt to various processing requirements, making the device universally applicable to different sample configurations.
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 configuration ensures homogeneous treatment results by adjusting the kinematics of samples within the sample vessels, allowing for equal treatment of radially inner and outer samples by changing the orientation of the sample holder.
Implementation Method 1
heat is transferred between the temperature control medium and the grinding bowl via a wall of the heat transfer element when a cold or warm or hot temperature control medium passes through the temperature control line
Implementation Method 2
During grinding operation, an outer side of the cooling plate is in contact with a base surface of the grinding bowl, whereby heat is transferred by conduction via the contact surface of the cooling plate and the base surface of the grinding bowl
Implementation Method 3
A pendulum drive of the vibrating mill has a multi-part design with an eccentric shaft mounted to rotate about a vertical eccentric axis
Implementation Method 4
two swing arms each mounted to vibrate about vertical vibration axes and connected to the eccentric shaft via couplings. Grinding bowl holders for the grinding bowls are attached to the swing arms
Data Source
AI summary
A laboratory mill is shown and described with at least one sample holder for receiving at least one sample vessel and with at least one holding device arranged to be rotatable about an axis of rotation and/or to oscillate about an axis of oscillation for holding and carrying along the sample holder during operation of the laboratory mill, wherein the sample vessel is moved on an orbit with an effective radius during operation of the laboratory mill, wherein complementary coupling geometries are provided on the sample holder and the holding device for a positive coupling of the sample holder to the holding device, and wherein the sample holder can be coupled to the holding device via the coupling geometries in at least two different orientations relative to the axis of rotation and/or the axis of oscillation in order to change the effective radius of the orbit of a sample vessel.