Horizontal Bead Mill Vessel Taper to Prevent Outlet Bead Buildup
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Solution Overview
Problem
Existing horizontal bead mills face issues with increased bead density at the outlet side due to forces applied in the direction of material flow, leading to decreased dispersion efficiency and productivity.
Innovation Solution
The bead mill is designed with an inclined inner surface on the vessel sidewall, angled 1 to 3 degrees relative to the rotor axis, which applies force opposite to the material flow direction, combined with a slit or screen at the outlet to separate beads from dispersed media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the moving speed of materials is increased to enhance productivity, then productivity is improved, but bead density increases in the outlet area causing decreased dispersion efficiency
Solution Approach 1:
The inclined inner surface of the vessel sidewall creates a counteracting force that opposes the material flow direction. This counterforce prevents beads from accumulating in the outlet area, maintaining uniform bead density even at high material flow speeds, thus preserving dispersion efficiency while enabling high productivity operation
2Manufacturing precision
If beads are rotated at high speed to improve dispersion, then dispersion efficiency is improved, but bead density increases at the outlet side
Solution Approach 1:
The inclined surface geometry creates a counterbalancing effect that prevents excessive bead accumulation in the outlet region. The angle of inclination is designed to counteract the centrifugal and drag forces that would otherwise cause bead density buildup, maintaining optimal bead distribution for effective dispersion
3Device complexity
If the vessel is designed with a straight sidewall, then device complexity is low, but bead density buildup occurs at the outlet
Solution Approach 1:
The vessel sidewall transitions from a symmetric straight design to an asymmetric inclined design. The inclination angle creates an asymmetric force distribution on the beads, generating a counteracting component that prevents bead accumulation in the outlet area, thereby improving dispersion efficiency with a relatively simple structural modification
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 configuration enhances dispersion efficiency and maintains productivity by preventing bead density buildup, even at higher material flow speeds.
Implementation Method 1
an inner surface of a sidewall of the vessel is inclined at a predetermined angle with respect to an axis of the rotor and is formed as an inclined portion whose inner diameter gradually decreases from an inlet side toward an outlet side
Implementation Method 2
a rotor which is rotated in the vessel to rotate the beads to thereby disperse the disperse media
Data Source
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AI summary
A horizontal bead mill for dispersing secondary battery materials and a method for dispersing conductive materials using the horizontal bead mill for dispersing the secondary battery materials are provided. The horizontal bead mill includes a vessel including an inlet and an outlet configured to receive disperse media. The vessel is filled with beads. A rotor is rotated in the vessel to rotate the beads to disperse the disperse media. A driving unit rotates the rotor. An inner surface of a sidewall of the vessel is inclined at a predetermined angle for an axis of the rotor in a manner that an inner diameter of the vessel gradually decreases from an inlet side to an outlet side.