Dosage Dispensing Device Tapping Mechanism
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Solution Overview
Problem
Existing dosage-dispensing devices face challenges in delivering pulverous substances like cornstarch due to cohesion and compactibility issues, leading to clogged delivery orifices and inconsistent flow, as particles tend to stick together and form lumps, which conventional stirring and vibrating mechanisms often exacerbate rather than alleviate.
Innovation Solution
A dosage-dispensing device featuring a pivotably supported receiving device that undergoes oscillatory pendulous movements generated by an actuator, producing mechanical pulses to loosen the dosage material before dispensing, preventing compaction and ensuring a homogeneous flow by varying the direction of impact, thus improving the flow capability and preventing alignment of flake-like particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional stirring and vibrating mechanisms are used to move dosage material, then the material can be propelled towards the delivery orifice, but the mechanisms often exacerbate compaction and clogging rather than alleviating them
Solution Approach 1:
Instead of applying force from below to propel material upward through the delivery orifice, the invention applies tapping forces from above to loosen and disaggregate the powder mass. This inverted approach prevents compaction by breaking up lumps before they can form, rather than trying to move already-compacted material.
Solution Approach 2:
The invention employs a tapping mechanism that generates mechanical vibrations to loosen the dosage material. These vibrations disrupt particle cohesion and prevent bridge formation in the source container, ensuring consistent material flow without the harmful compaction effects of conventional stirring mechanisms.
2Productivity
If the delivery orifice aperture is increased to improve flow, then material delivery rate increases, but precision of dosage control decreases
Solution Approach 1:
The invention changes the physical state parameters of the dosage material by applying tapping forces that alter bulk density and particle arrangement. This creates optimal flow conditions that enable precise control through smaller aperture openings, thereby maintaining both productivity and dosage precision.
3Stability of the object's composition
If tapping forces are applied to loosen dosage material, then bulk density homogeneity improves, but energy consumption increases
Solution Approach 1:
The tapping mechanism operates periodically rather than continuously, applying brief impulses at intervals sufficient to maintain bulk density homogeneity. This periodic action achieves the desired material loosening effect while minimizing energy consumption compared to continuous stirring or vibrating mechanisms.
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 loosens sticky dosage materials, enhancing flow behavior and preventing clogging, allowing for precise and efficient delivery of pulverous substances with improved bulk density homogeneity, even for materials with varying densities.
Implementation Method 1
The receiving device is pivotably supported on the holder device and configured with freedom for performing an oscillatory pendulous movement in response to operation of the actuator
Implementation Method 2
producing mechanical pulses to loosen the dosage material before dispensing
Implementation Method 3
the particles in many pulverous substances have a tendency to stick together
Implementation Method 4
most powders are compactible, so that lumps of compacted powder will form
Data Source
AI summary
A dosage-dispensing device for dosage material in powder- or paste form includes a holder device and at least one receiving device. At least one dosage-dispensing unit can be set into, as well as removed from, this receiving device. The dosage-dispensing device further includes at least one actuator whose action is directed at the receiving device. The receiving device is pivotably supported on the holder device with the freedom of performing a pendulous movement. The actuator can generate oscillatory pendulous movements of the receiving device.