Wedge Floatation Device for Solid Particle Surface Energy Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining solid particle surface energy, such as the Film Floatation Technique, face limitations including high liquid volume requirements, measurement uncertainties, and experimental difficulties, particularly for particles in the tens of microns to hundreds of microns range, where kinetic energy dominates over surface tension.
Innovation Solution
A method involving a container made of high surface energy material where solid particles are placed, and a liquid is poured in, with the container tilted to separate floating and sinking particles, using a wedge floatation device to control the liquid's movement and surface tension, allowing for accurate measurement of surface energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the Film Floatation Technique is used to determine solid particle surface energy, then surface energy measurement can be performed, but large volumes of liquid are required which results in need for disposal of large volumes of liquid
Solution Approach 1:
The patent extracts only the essential function of the liquid (providing surface tension for particle flotation) while eliminating the need for large volumes. The liquid is used in minimal amounts within a capillary tube, and the system is designed to minimize liquid consumption while maintaining measurement capability.
Solution Approach 2:
The patent uses a capillary tube with very small internal diameter (micro-capillary) to contain the liquid. This thin-film-like constraint on the liquid volume allows the measurement to proceed with minimal liquid amounts, solving the contradiction between measurement requirements and liquid consumption.
2Measurement precision
If the Film Floatation Technique is used, then surface energy can be measured, but the results have a large degree of uncertainty
Solution Approach 1:
The patent replaces the mechanical sprinkling/placement operation with a gravitational flow system. Liquid is allowed to flow naturally through the capillary tube under gravity, eliminating the need for manual particle placement and reducing operational variability that causes measurement uncertainty.
Solution Approach 2:
The patent changes the physical parameters of the system by using a micro-capillary tube with specific diameter ranges and controlling liquid flow rates. These parameter optimizations ensure that kinetic energy of particles does not dominate surface tension effects, improving measurement reliability and reducing uncertainty.
3Measurement precision
If particles are placed on liquid surface using conventional methods, then surface energy measurement can be performed, but kinetic energy component of particle striking liquid surface dominates surface tension component
Solution Approach 1:
The patent performs preliminary action by allowing particles to be gently introduced to the liquid surface through controlled gravitational flow before measurement begins. This preliminary gentle introduction prevents high-velocity impact that would create kinetic energy dominance, ensuring surface tension is the primary force measured.
Solution Approach 2:
The patent uses hydraulic principles by controlling liquid flow through the capillary tube to gently deliver particles to the surface. The controlled flow rate and pressure gradient ensure particles enter the liquid surface at low velocities, preventing kinetic energy from dominating the surface tension measurement.
4Measurement precision
If the Film Floatation Technique is used, then surface energy measurement can be performed, but experimental difficulties are associated with sprinkling/placing solid particles on liquid surface
Solution Approach 1:
The patent implements self-service by allowing the liquid flow system to automatically deliver particles to the measurement zone. The controlled gravitational flow through the capillary tube performs the particle placement function automatically, eliminating the need for manual sprinkling or placement operations that cause experimental difficulties.
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 approach reduces measurement uncertainties and difficulties, providing a more reliable and efficient method for determining solid particle surface energy by effectively separating and measuring the surface energy of particles across various size ranges.
Implementation Method 1
The wettability of solid particles, which is related to the surface energy of the solid particles, is an important parameter in many industrial applications
Implementation Method 2
tilting the container to drain out from the container a first subset of the solid particles floating at a top surface of the liquid
Data Source
AI summary
A wedge floatation device includes a bottom section and a sidewall positioned around a perimeter of the bottom section to contain a liquid within the wedge floatation device. The bottom section includes an outer portion and a plateau portion centrally positioned in the bottom section. The plateau portion is raised to a height above the outer portion and below a top edge of the sidewall. The plateau portion includes a groove that is substantially concentric with an outer perimeter of the plateau portion. The groove is designed to dampen the velocity of a liquid directed from the outer perimeter of the plateau portion to a center of the plateau portion. The bottom section further includes a transition portion extending between the outer portion and the plateau portion. The transition portion surrounds the outer perimeter of the plateau portion. The outer portion surrounds a perimeter of the transition portion.