Aeraulic Particle Separation With Variable Turbine Size Control
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Solution Overview
Problem
Existing particle separation methods for additive manufacturing, such as physical sieves, lack the ability to adjust particle size and suffer from poor aeration and clogging issues.
Innovation Solution
A particle separation device using a dry-type aeraulic separator with a variable-speed turbine to select particles based on size, combined with an extraction system and optional filtering, allowing dynamic adjustment and improved aeration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a physical sieve with fixed mesh is used for particle separation, then particle separation is achieved, but the particle size cannot be adjusted and aeration is poor
Solution Approach 1:
The patent replaces the static fixed mesh sieve with a dynamic aeraulic separation system using a turbine that rotates at variable speeds. The turbine's rotation speed can be adjusted to separate particles of different sizes dynamically, allowing adaptability to different particle size requirements without changing the physical structure of the separator itself.
Solution Approach 2:
The patent substitutes the mechanical contact-based sieve system with a pneumatic/aeraulic system where particles are separated through air stream interactions with a rotating turbine. This replacement eliminates the need for physical mesh contact, improving aeration while enabling adjustable separation through turbine speed control.
2Reliability
If a physical sieve is used for particle separation, then separation is achieved, but clogging occurs and aeration is low
Solution Approach 1:
The patent replaces the mechanical sieve system prone to clogging with a pneumatic aeraulic separation system. Particles are separated through air stream dynamics and turbine interaction without physical contact with a mesh surface, eliminating the clogging problem entirely while maintaining continuous operation.
Solution Approach 2:
The patent employs a pneumatic system where an air stream carries particles through a rotating turbine for separation. This pneumatic approach uses gas flow dynamics rather than mechanical filtration, ensuring continuous particle separation without clogging and providing excellent aeration throughout the separation process.
3Adaptability or versatility
If a fixed mesh sieve is used, then simple structure is maintained, but particle size selection is not adjustable
Solution Approach 1:
The patent introduces dynamic control through variable turbine rotation speed to achieve particle size selection. By adjusting the turbine's rotational speed, operators can selectively separate particles of different sizes without changing the physical separator configuration, providing adaptability while maintaining operational simplicity through speed control.
Solution Approach 2:
The patent utilizes parameter changes in the turbine's rotation speed to control particle separation. By varying this operational parameter, the system can adapt to different particle size requirements. This approach maintains ease of operation through simple speed adjustment while achieving versatile particle size selection capability.
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
Enables precise control over particle size selection, reduces clogging, and enhances aeration, resulting in better particle handling and preparation for additive manufacturing processes.
Implementation Method 1
a dry-type aeraulic separator comprising a separating turbine, a speed of rotation of which is variable. The dry-type aeraulic separator selects the particles contained in the gas stream according to a particle size depending on the speed of rotation of the separating turbine
Data Source
AI summary
A device for separating particles contained in a gas stream for selective additive manufacturing and a selective additive manufacturing apparatus are disclosed. The device comprises at least one dry-type aeraulic separator comprising a separating turbine, a speed of rotation of which is variable. The dry-type aeraulic separator selects the particles contained in the gas stream according to a particle size depending on the speed of rotation of the separating turbine. The device also comprises a device for extracting the particles. The dry-type aeraulic separator and the extraction device are in fluidic communication such that a gas stream exiting the dry-type aeraulic separator circulates through the extraction device and such that the gas stream exiting the extraction device circulates through the dry-type aeraulic separator. The device also comprises a device for circulating the gas stream between the dry-type aeraulic separator and the extraction device.