Adjustable Air Knife Vibratory Separator for Particle Clumping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibratory material separators face challenges in effectively separating particles of different densities due to clumping issues, where fixed air supply systems often fail to propel low-density particles to the landing area, leading to incomplete separation, especially when the composition of the mixture varies.
Innovation Solution
The introduction of an adjustable air knife system, which includes a foraminous fluidizing deck and an adjustable air knife with a deflector plate that can alter the width and velocity of the air stream, allowing for optimized separation by adjusting the air flow to suit the specific composition of the particles, ensuring that both heavier and lighter particles are correctly directed to their respective collection areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air flow velocity is increased to break up clumps, then particle separation is improved, but heavy unwanted particles are propelled across the drop out opening and onto the landing area
Solution Approach 1:
The air knife width is made adjustable rather than fixed, allowing the system to dynamically adapt to different particle compositions. The deflector plate can be repositioned to change the air stream width, optimizing the balance between breaking up clumps and preventing heavy particle contamination for different material mixes.
Solution Approach 2:
The system changes the physical parameter of air stream width by adjusting the deflector plate position. This parameter change allows optimization of air flow characteristics - narrowing the stream to increase velocity for breaking clumps, or widening it to reduce velocity and prevent heavy particle propulsion, depending on the specific separation needs.
2Reliability
If a fixed width air stream is used, then the system structure is simple, but the separation is incomplete when particle composition varies
Solution Approach 1:
The air knife system transitions from a fixed width design to an adjustable width design. The deflector plate can be repositioned along the air knife structure, allowing the effective width of the air stream to be dynamically adjusted to match different particle compositions and separation requirements.
Solution Approach 2:
The adjustable air knife system provides multi-functionality by being able to handle different particle compositions with a single device. By adjusting the deflector plate position, the same air knife structure can optimize separation for various material mixes, making the system universally applicable to different separation scenarios.
3Speed
If the air stream width is reduced to increase velocity, then clump breaking is improved, but the air flow coverage is reduced
Solution Approach 1:
The system uses parameter changes to adjust air stream characteristics. By moving the deflector plate, the operator can change the air stream width parameter, which inversely affects velocity. This allows optimization of the velocity-coverage trade-off based on the specific separation task at hand.
Solution Approach 2:
The air knife system provides dynamic control over air stream parameters. Rather than being fixed, the deflector plate can be repositioned to change the air stream width and velocity characteristics, allowing the system to adapt to different operational requirements for clump breaking and particle propulsion.
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 enhances the separation efficiency by breaking up clumps and optimizing air flow to accurately separate particles of varying densities, allowing a single separator to effectively handle different composite mixtures within the same physical setup, improving the overall separation process.
Implementation Method 1
a foraminous fluidizing deck was provided in the conveying plateau adjacent the drop out opening for directing an air supply upward through the fluidizing deck. Air forcibly delivered through the fluidizing deck tended to aid in the initial break up of lumped particles
Implementation Method 2
A fixed width forced air supply is directed through the flow path and propels additional low density particles onto the landing surface or second plateau
Implementation Method 3
the particles on the landing surface are conveyed, typically by a vibratory force, to a second, separate area
Implementation Method 4
The more dense particles fall to the bottom of the structure for accumulation in a first area
Data Source
AI summary
A vibratory material separating apparatus has at least two plateau conveying surfaces interrupted by a drop out opening. A composite mixture is conveyed by a vibrating action beyond the first conveying plateau and over a foraminous section in the first conveying plateau adjacent the drop out opening. Air is directed upwardly through the foraminous section to break apart the composite mixture, and an air supply formed by an air duct is also directed angularly in relationship to the plane of the first conveying plateau to further break apart the composite mixture and to propel particles of predetermined density and/or dimension to the landing area on the second conveying plateau. The air duct is adjustable between a first position and a second position to form an air stream having an adjustable and width. In another aspect, a separating tube is located between and spaced from the first and second conveying plateaus, within the drop out opening. The separating tube interacts with the air stream produced by the air duct to assist in carrying particles passing over the leading edge of the separating tube over the drop out opening and onto the landing area of the second conveying plateau.