Polymer Hydration Cutting Head Shear Slicing
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Solution Overview
Problem
Conventional methods for hydrating polymers with particle sizes smaller than 1200 microns often result in clumping, making it difficult to achieve efficient hydration and dispersion.
Innovation Solution
A cutting head with an enclosed fine tooth design on both the rotor and stator of a polymer slicing assembly, which applies high shear forces to slice polymers into smaller sizes, such as 75-125 microns, facilitating quicker hydration and improved dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If polymer particle size is decreased to increase surface area and reduce hydration time, then hydration speed is improved, but particle clumping occurs during wetting
Solution Approach 1:
The cutting head divides polymer particles into smaller segments (75-125 microns, down to 50 microns) through high-shear mechanical action between rotor and stator teeth. This segmentation increases surface area for faster hydration while the continuous cutting action prevents clumping by maintaining particle separation during the wetting process.
Solution Approach 2:
The rotor rotates at high speed creating dynamic cutting action between rotor teeth and stator teeth. This dynamic mechanical shearing continuously breaks up forming clumps and maintains particle dispersion during hydration, allowing small particle sizes without aggregation.
2Ease of operation
If conventional wetting techniques are used on small polymer particles, then particles can be wetted, but clumping occurs
Solution Approach 1:
The cutting and wetting operations are merged into a single integrated process within the cutting head. Water is introduced simultaneously with the mechanical cutting action, allowing particles to be sized and wetted in one step. This combined approach prevents clumping by maintaining particle separation through continuous shearing while introducing moisture.
3Ease of operation
If polymer is sliced to standard size of 1200 microns, then handling is easier, but hydration time increases and surface area is reduced
Solution Approach 1:
The invention changes the particle size parameter from the conventional 1200 microns down to 75-125 microns (and potentially 50 microns). This parameter change dramatically increases surface area and reduces hydration time. The robust enclosed tooth design and high-shear cutting mechanism enable this size reduction while maintaining operational ease through automated processing.
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 enables rapid hydration of polymers, potentially eliminating the need for maturation tanks, especially in space-constrained environments, and achieves hydration in 20 minutes or less, with some embodiments allowing for instantaneous hydration of particles as small as 50 microns.
Implementation Method 1
the polymer may be subjected to high shear surface, which may result in improved dispersion and quicker hydration time
Data Source
Figure 1A~1C
Figure 2
Figure 3A~3B
AI summary
An apparatus for cutting polymer includes a rotor having a base with a first side and a second side opposite the first side. The rotor includes an outer annular wall extending from the first side and defining a number of slots, an inner annular wall defining a number of slots and extending from the first side and surrounded by, and spaced apart from, the outer annular wall. The rotor also includes blades extending from the first side and positioned within the inner annular wall. A circular-shaped stator also defines a number of slots. At least a portion of the stator is positioned in a space between the outer annular wall and the inner annular wall of the rotor.