Shaking Device Non-Periodic Impact Homogenization
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Solution Overview
Problem
Existing mechanical devices are unsuitable for shaking content comprising a material in powder form and a liquid product within a rigid container of less than one liter, as they fail to replicate the effectiveness and repeatability of manual shaking, particularly for tests like the AACC—Method 56-11 for flour and solvent mixtures.
Innovation Solution
A shaking device with a frame, first and second plates, and a drive unit that moves the second plate in alternating translational and rotational motion to create non-periodic impacts with a stop, mimicking manual shaking and achieving complete homogenization, while being compact and easily implementable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing mechanical shaking devices are used, then mechanical and reproducible shaking is achieved, but the shaking is unsuitable for powder-liquid mixtures in containers of less than one liter and does not replicate manual shaking effectiveness
Solution Approach 1:
The device employs dynamic motion characteristics by allowing the container to pivot about a horizontal axis during shaking. The container moves from an initial position through a series of impacts with the stop, creating non-periodic motion that adapts to the powder-liquid mixture requirements while maintaining mechanical reproducibility for reliable testing.
2Ease of operation
If complex mechanical devices are implemented to achieve manual-like shaking, then shaking effectiveness is improved, but device complexity increases
Solution Approach 1:
The shaking device is segmented into distinct functional components: a support structure with a stop, a container mounted on a pivot axis, and a drive mechanism. This segmentation allows each component to perform its specific function simply - the stop provides impact resistance, the pivot enables natural container motion, and the drive provides controlled actuation - collectively achieving manual-like shaking without overall system complexity.
3Productivity
If periodic shaking motion is used, then mechanical shaking is achieved, but complete homogenization and blending are not accomplished
Solution Approach 1:
The device uses periodic actuation of the drive mechanism to initiate shaking sequences. Each sequence consists of multiple impacts between the container and stop, creating non-periodic container motion. This periodic triggering of non-periodic motion achieves complete homogenization while maintaining operational efficiency for productivity.
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 achieves effective and repeatable shaking of contents in containers of less than one liter, ensuring thorough mixing and homogenization, similar to manual methods, while being simple to implement and adaptable for use with other devices like centrifuges.
Implementation Method 1
cause a series of impacts between the container and the stop in order to achieve a non-periodic shaking of the container
Implementation Method 2
The relative rotational motion of the container in relation to the second plate limits the damage that could result from the series of impacts between the container and the stop and increases the irregularity of the shaking
Data Source
AI summary
Device for shaking, within a rigid container, a powder and liquid, for conducting a test on the shaken content, includes: a frame; a first plate assembled thereto; a second plate assembled indirectly to the frame, arranged close to the first plate and movable relative to the frame and first plate; and a drive unit for moving the second plate relative to the frame and first plate. The container is carried by the second plate and is movably mounted relative thereto; the first plate includes a stop fixedly mounted on the first plate; and the second plate is moved relative to the first plate by the drive unit, in an alternating and periodic translational and/or rotational motion between a proximal position and a distal position, to move the container relative to the second plate and cause a series of impacts between the container and the stop to achieve a non-periodic shaking.