Shear Blade Angle Optimization for Agitator Particle Micronization
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Solution Overview
Problem
Existing agitators face challenges in further micronizing particles in fluids while minimizing energy consumption and extending the lifespan of consumables, such as seals, when increasing the rotational speed of shear blades.
Innovation Solution
An agitator design featuring a shear blade with a base portion rotating around a predetermined axis and multiple blades at its edge, where the angle between each blade and the tangent line to the outer periphery is between 15 degrees and 60 degrees, allowing for effective micronization of particles without the need for high rotational speeds, thus reducing energy consumption and prolonging the life of consumables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rotational speed of the shear blade is increased to further micronize particles, then the particle size is reduced, but the energy consumption increases and the lifespan of consumables such as seals is shortened
Solution Approach 1:
The patent changes the geometric parameters of the shear blade, specifically setting the angle between the blade and the tangent line to the outer periphery at the fixed position to be 15-60 degrees. This parameter optimization allows the blade to effectively micronize particles without requiring high rotational speeds, thereby reducing energy consumption while achieving fine particle size
Solution Approach 2:
The patent designs the shear blade with blades fixed at the edge of the base portion, creating an optimized distribution that ensures uniform particle micronization across the fluid processing area. This configuration achieves effective particle size reduction without concentrating stress or energy consumption at specific points, extending consumable lifespan
2Manufacturing precision
If the rotational speed of the shear blade is increased to further micronize particles, then the particle size is reduced, but the lifespan of consumables such as seals is shortened
Solution Approach 1:
By optimizing the blade angle parameter to 15-60 degrees, the patent achieves effective particle micronization at lower rotational speeds. This reduces mechanical stress and wear on seals and other consumables, thereby extending their lifespan while still achieving the desired particle size reduction
Solution Approach 2:
The shear blade configuration with blades distributed at the edge of the base portion creates uniform stress distribution during operation. This prevents localized wear and extends the service life of consumables such as seals, while maintaining effective particle micronization 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
The agitator effectively micronizes particles in fluids, achieving results comparable to high-speed operations while maintaining lower energy consumption and extending the lifespan of consumables, such as seals, by optimizing the angle of the shear blades.
Implementation Method 1
a shear blade disposed inside the flow blade at a bottom of the agitation tank to disperse the particles
Data Source
AI summary
An agitator includes: an agitation tank that accommodates a fluid to be processed containing particles; a flow blade that agitates the fluid to be processed accommodated in the agitation tank; and a shear blade disposed inside the flow blade at a bottom of the agitation tank to disperse the particles. The shear blade 16 includes a base portion rotating around a predetermined axis and a plurality of blades provided at an edge of the base portion. An angle formed on a downstream side in a rotation direction of the base portion between the blade and a tangent line to an outer periphery of the base portion and each of the blades is 15 degrees or more and 60 degrees or less.