Nonlinear Reciprocating Agitation Mechanism for Homogenization
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Solution Overview
Problem
Conventional homogenization devices with linear reciprocating motion fail to effectively disaggregate samples, causing excessive heat generation and inadequate particle-size reduction due to limited grinding shear action.
Innovation Solution
The implementation of a nonlinearly reciprocating agitation mechanism within homogenization devices, utilizing a combination of rotary members and connecting members to create a grinding shear action through a nonlinear motion profile, which includes both axial and transverse motion of the sample tubes, thereby enhancing sample disaggregation and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If linear reciprocating motion is used in homogenization devices, then the device structure is simple, but the grinding shear action on samples is insufficient and excessive heat is generated
Solution Approach 1:
The patent applies curvature by implementing a nonlinear reciprocating motion profile that includes both linear and transverse components. The transverse motion component creates a curved agitation path that generates grinding shear action, converting the purely linear motion into a curved trajectory that enhances sample disaggregation while reducing heat generation through more effective mechanical action.
2Device complexity
If linear reciprocating motion is used in homogenization devices, then the device structure is simple, but particle-size reduction is inadequate
Solution Approach 1:
The nonlinear motion profile incorporating transverse motion creates a curved agitation path that generates grinding shear action, converting the purely linear motion into a curved trajectory that enhances sample disaggregation and achieves better particle-size reduction.
Solution Approach 2:
The patent employs periodic reciprocating motion with alternating directions and varying speeds. The motion includes acceleration and deceleration phases that create periodic stress on the sample, enhancing disaggregation and particle-size reduction through repeated mechanical action.
3Object-generated harmful factors
If nonlinearly reciprocating motion profile is implemented, then grinding shear action is increased, but the device complexity increases
Solution Approach 1:
The nonlinear motion profile is implemented through a mechanical linkage system that converts simple rotary motion into complex reciprocating motion with transverse components. The curvature is achieved through geometric arrangement of linkages rather than complex actuators, generating grinding shear action while maintaining reasonable device complexity.
Solution Approach 2:
The patent uses a connecting rod and crank mechanism as intermediary elements that transform simple rotary motion into complex nonlinear reciprocating motion. These intermediary mechanical elements generate the desired transverse motion component without requiring complex control systems or multiple actuators.
4Stability of the object's composition
If nonlinearly reciprocating motion profile is implemented, then homogenization is improved, but the device complexity increases
Solution Approach 1:
The nonlinear motion profile with transverse components creates a curved agitation path that generates grinding shear action, significantly improving homogenization effectiveness. The curved trajectory ensures thorough sample disaggregation and mixing.
Solution Approach 2:
The periodic reciprocating motion with varying speeds and directions creates repeated mechanical stress on the sample, enhancing homogenization through cumulative mechanical action. The oscillating motion pattern ensures consistent agitation throughout the sample volume.
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 nonlinear motion profile effectively increases the grinding shear action on samples, leading to improved homogenization and reduced heat generation, resulting in more efficient particle-size reduction and sample processing.
Implementation Method 1
the sample in the tube in the tube holder on the connecting member is driven through a nonlinearly reciprocating motion profile to produce a grinding shear action to better homogenize the samples
Data Source
AI summary
Agitation mechanisms for homogenization devices for processing sample materials in tubes that are secured by tube holders to the agitation mechanisms. Each agitation mechanism includes a first rotary member having a first fixed rotational axis, a second rotary member having a second fixed rotational axis, and a connecting member that extends between them, is rotationally mounted to them at third and fourth non-fixed rotational axes, and to which the tube holder is mounted, with the first and third rotational axes defining a first offset, and with the second and fourth rotational axes defining a second offset. When the first rotary member is driven through rotation, the sample in the tube in the tube holder on the connecting member is driven through a nonlinearly reciprocating motion profile to produce a grinding shear action to better homogenize the samples. Other disclosed embodiments produce linearly reciprocating motion profiles.