Fluidized Particulate Dosing for Shear-Sensitive Material Filling
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Solution Overview
Problem
Existing receptacle filling machines face challenges in accurately and consistently filling shear-sensitive materials and suffer from dose variation and machine clogging, particularly when handling a wide range of solid products with varying packing densities.
Innovation Solution
An apparatus with a dosing unit that imparts a fluid-like state to solid particulate materials, using a reservoir with a fluidized bed and dosing chambers that displace relative to the reservoir along a perpendicular axis, reducing shear stresses and enabling precise dosing without compacting the materials, combined with a receptacle handling unit for aligning receptacles with the dosing unit and an optional closing unit for sealing the filled receptacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vacuum compression filling is used, then filling speed is improved, but dose variation increases and shear-sensitive materials are damaged
Solution Approach 1:
The invention changes the physical state parameter of the particulate material from solid/compressed to fluidized state. By introducing a fluidizing medium (gas or liquid) and controlling fluidization parameters (flow rate, velocity), the material behaves like a fluid during filling, eliminating compression-induced dose variation and shear damage while maintaining high filling speed through continuous material flow.
Solution Approach 2:
The invention replaces the mechanical vacuum compression system with a fluidization-based filling system. Instead of using mechanical force to compact and transfer material, the system uses fluid dynamic forces to suspend and transport particles, eliminating the harmful mechanical compression step while maintaining efficient material transfer.
2Productivity
If vacuum compression is applied to increase filling efficiency, then productivity improves, but machine clogging increases
Solution Approach 1:
The invention changes the material state parameter from compressed solid to fluidized state, fundamentally altering flow characteristics. In the fluidized state, particles remain suspended and mobile, preventing the compaction and bridging that lead to clogging, while maintaining high filling efficiency through continuous material availability at the dosing point.
Solution Approach 2:
The invention introduces a fluidizing medium (gas or liquid) as an intermediary between the particulate material and the filling mechanism. This intermediary prevents direct contact and compression between particles and machine surfaces, eliminating clogging while maintaining efficient material transfer through the fluidized state.
3Productivity
If high shear force is applied during filling, then filling speed improves, but material integrity deteriorates
Solution Approach 1:
The invention changes the stress state parameter of the material during filling. By fluidizing the material, the stress distribution changes from high localized shear forces in compression to distributed buoyant and drag forces in the fluidized state, eliminating shear damage while maintaining filling speed through continuous material flow.
Solution Approach 2:
The invention replaces the mechanical shear force application system with a fluidization-based transport system. Instead of using mechanical movement that applies shear, the system uses fluid flow to suspend and transport particles gently, eliminating shear damage while maintaining efficient material transfer.
4Manufacturing precision
If material is compacted during filling, then dosing precision improves, but particle shape and size are altered
Solution Approach 1:
The invention changes the material state parameter from compacted solid to fluidized state, fundamentally altering how dosing precision is achieved. Instead of compression, dosing precision is achieved through controlled fluidization parameters (flow rate, velocity, distribution) that maintain particle integrity while enabling precise metering of the fluidized material.
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 solution ensures accurate and consistent filling of receptacles with shear-sensitive materials, reducing dose variation and machine clogging, while maintaining the bioavailability of materials with specific particle shapes and sizes, and minimizing the impact of packing density variability.
Implementation Method 1
the reservoir being arranged to impart a fluid-like state to the solid particulate material at least for the duration of the displacement
Data Source
AI summary
An apparatus for dosing solid particulate material into one or more receptacles, the apparatus comprising: a reservoir for containing an amount of solid particulate material; a dosing unit comprising a dose collection position for collecting a predetermined dose of solid particulate material from the reservoir, and a dose release position for releasing the solid particulate material into the one or more receptacles; a receptacle handling unit for retaining the one or more receptacles, arranged to at least periodically align at least one of the one or more receptacles with the dosing unit when in the dose release position; and optionally a receptacle closing unit for closing the one or more receptacles once filled with the solid particulate material; wherein the dosing unit comprises one or more dosing chambers arranged to displace relative to said reservoir, and/or vice versa, along a perpendicular axis Y such that at least a portion of the chamber(s) is capable of being immerged into, and emerged out of, the solid particulate material at least when the dosing unit is in the dose collection position, the reservoir being arranged to impart a fluid-like state to the solid particulate material at least for the duration of the displacement.