Fluid Height Feedback for Continuous Slurry Viscosity Control
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Solution Overview
Problem
Conventional viscometers are inefficient for measuring and controlling the viscosity of viscous fluids like slurries and emulsions, as they require manual measurement methods that are time-consuming and costly due to the abrasive nature of suspended particles, which are incompatible with conventional sensors.
Innovation Solution
A viscosity control system comprising a sensor unit with a container and controller that senses the fluid height and modulates the flow of viscosity-adjusting fluids to maintain the viscosity within a predetermined range, using pumps and solenoid valves to continuously adjust the fluid's viscosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual Zahn cup method is used to measure viscosity of slurry, then measurement can be performed on viscous fluids with suspended solids, but the process is slow and time-consuming
Solution Approach 1:
The patent replaces manual mechanical measurement (Zahn cup dipping and timing) with an automated optical sensing system. A sensor detects fluid height in a container, and a controller automatically adjusts viscosity based on the detected level, eliminating manual intervention and significantly increasing measurement and control speed while maintaining compatibility with viscous slurries containing suspended solids
Solution Approach 2:
The system enables self-service operation where the viscosity control system automatically monitors fluid height and adjusts viscosity without requiring manual measurement. The controller continuously receives sensor signals and modulates viscosity-adjusting fluid flow automatically, allowing the system to service itself and eliminate the need for repeated manual Zahn cup measurements
2Manufacturing precision
If multiple viscosity corrections are made with manual measurement between each correction, then viscosity can be adjusted, but the delays are time-consuming and costly
Solution Approach 1:
The patent implements continuous viscosity monitoring and control by maintaining a sensor in the fluid stream that continuously detects fluid height. The controller continuously processes this data and makes real-time adjustments to viscosity-adjusting fluid flow, eliminating the discontinuous manual measurement process and enabling continuous useful action without time losses between corrections
Solution Approach 2:
The system employs feedback control where the sensor continuously monitors fluid height (which correlates with viscosity) and feeds this information back to the controller. The controller compares the detected level against target parameters and automatically adjusts viscosity-adjusting fluid flow to maintain optimal viscosity, creating a closed-loop feedback system that rapidly responds to viscosity changes without manual intervention delays
3Productivity
If conventional automated viscometers are used for low viscosity fluids, then measurement is efficient, but they are unsuitable for viscous fluids and slurries
Solution Approach 1:
The patent creates a universal viscosity control system that can handle both low-viscosity fluids and viscous slurries with suspended solids. The optical sensor and controller design is adaptable to various fluid types by adjusting measurement parameters and viscosity-adjusting fluid selection, making the system multi-functional and universally applicable across different fluid viscosities and compositions that conventional specialized viscometers cannot handle
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 system enables continuous and automatic viscosity control, increasing workflow efficiency, reducing worker-hours, and decreasing production costs by maintaining viscosity within predetermined limits.
Implementation Method 1
a sensor configured to sense a height of a surface of the viscous fluid in the container
Implementation Method 2
A diameter of the outlet and the flow of the viscous fluid are configured to generate a height of the viscous fluid in the container that is within a predetermined height range
Data Source
AI summary
A viscosity control system for measuring and controlling a viscosity of a viscous fluid includes a viscosity sensor unit, a supply of viscosity adjusting fluid, and a controller. The viscosity sensor unit includes a container having an inlet and an outlet, a flow of the viscous fluid flowing into the inlet, and a sensor configured to sense a height of a surface of the viscous fluid in the container. A diameter of the outlet and the flow of the viscous fluid are configured to generate a height of the viscous fluid in the container that is within a predetermined height range. The controller is configured to receive the sensed height, compare the sensed height to the predetermined height range, and modulate a flow of fluid from the supply of viscosity adjusting fluid in response to the sensed height being outside the predetermined height range.