Axial Piston Drum Assembly for Dust-Free Powder Dispensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing powder dispensing apparatuses face issues with unintentional powder loss and undesirable dusting of surfaces, particularly due to the use of pressurized gas, and often require complex disassembly for cleaning.
Innovation Solution
A powder dispensing apparatus with a reduced drum diameter and axial piston placement, utilizing a flexible piston plate and compaction band to minimize powder loss and facilitate easy cleaning, where the piston is controlled to compress and accurately dispense powder without pressurized air, and the drum assembly can be easily disconnected from the drive mechanism for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressurized gas is used to expel powder from chambers, then powder can be effectively dispensed, but powder dusting on surfaces and unintentional powder loss occur
Solution Approach 1:
The harmful element (pressurized gas) is extracted and replaced with a mechanical ejection system. The piston mechanically pushes powder out of the chamber through a defined aperture, eliminating the need for pressurized gas and thereby preventing powder dusting and unintended powder loss while maintaining effective powder dispensing.
Solution Approach 2:
A piston is introduced as an intermediary mechanical element between the powder chamber and the ejection mechanism. The piston provides controlled mechanical force to expel powder through a defined aperture, serving as a mediator that achieves effective powder dispensing without the harmful effects of pressurized gas.
2Productivity
If a standard drum assembly with radial pistons is used, then powder can be dispensed, but the drum diameter increases and cleaning becomes difficult
Solution Approach 1:
The piston arrangement is changed from a radial configuration (requiring large drum diameter) to an axial configuration (allowing compact drum design). The piston moves axially within the chamber rather than radially, enabling the drum to have a reduced diameter while maintaining powder dispensing capability and improving accessibility for cleaning.
Solution Approach 2:
The drum assembly is segmented into separable components, with the piston and chamber designed as modular units that can be easily disassembled for cleaning. This segmentation allows maintenance personnel to access and clean internal surfaces without complex disassembly procedures.
3Stability of the object's composition
If the drum assembly is integrated with the drive mechanism, then structural stability is improved, but maintenance requires complete disassembly of the machine
Solution Approach 1:
The system is divided into separable modules: the drum assembly with piston-chamber units can be detached from the drive mechanism. This segmentation maintains structural stability during operation while enabling independent maintenance of the powder handling components without requiring complete machine disassembly.
Solution Approach 2:
The connection between the drum assembly and drive mechanism is made dynamically adjustable, allowing the drum to be easily coupled and decoupled. This dynamic interface provides structural stability during operation but facilitates quick removal of the drum assembly for maintenance and cleaning.
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 solution effectively reduces powder loss, minimizes dusting, and simplifies the cleaning process by isolating the drive assembly from powder, allowing for precise control of powder dosage and easy maintenance without stripping the machine apart.
Implementation Method 1
the piston is controlled to compress and accurately dispense powder
Data Source
Figure 1~4
Figure 2~5
Figure 6~7
AI summary
A powder dispensing apparatus is disclosed in which the apparatus includes a drum assembly 2. The drum assembly includes a support portion 10 and a foil 14 which are linearly movable relative to one another. The foil 14 has a plurality of through-apertures 25, and the support portion 10 includes a corresponding number of apertures 20. The base of each aperture 20 in the support portion is closed off by a piston 24. The apertures 25, 20 are aligned at a filling position where powder can fill a compartment. The foil 14 is then translated relative to the support portion 10 in order to close the compartments. The drum 2 can be rotated through 180° to a dispensing position. The foil 14 is moved so that the apertures 25, 20 are aligned and the pistons 24 can be used to dispense powder into a receptacle.