Cylindrical Chemical Dosing Block for Uniform Dissolution
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Solution Overview
Problem
Existing methods for chemically dosing fluids, such as fire retardant foams and agricultural chemicals, require large storage volumes and suffer from uneven dissolution or erosion of solid blocks, leading to rapid concentration reduction and frequent replacements.
Innovation Solution
A block with a stable surface area design, typically a rectangular prism with flat surfaces, composed of active ingredients and a soluble solid carrier like polyethylene glycol, housed in a chamber that maintains constant chemical concentration through controlled fluid flow, allowing for even dissolution or erosion without significant surface area change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If solid blocks are used for chemically dosing fluid, then storage volume requirements are reduced, but the blocks suffer from uneven dissolution or erosion causing rapid concentration reduction
Solution Approach 1:
The block is designed with a cylindrical shape instead of conventional flat or angular shapes. This curved geometry ensures uniform dissolution or erosion across the entire surface area as fluid flows over it, maintaining consistent chemical concentration in the dosed fluid throughout the block's service life.
Solution Approach 2:
The block features a specific geometric configuration where the cylindrical shape creates uniform surface exposure to flowing fluid. This local geometric quality ensures that all portions of the block dissolve or erode at equivalent rates, preventing the uneven concentration reduction that occurs with traditional block shapes.
2Volume of stationary object
If solid blocks are used for chemically dosing fluid, then large storage tanks are not needed, but frequent block replacements are necessary to maintain concentration
Solution Approach 1:
The cylindrical block design maximizes uniform dissolution/erosion characteristics, ensuring that the entire surface area degrades at consistent rates. This extends the functional service life of the block compared to conventional shapes, reducing replacement frequency while maintaining the space-saving advantage of solid block dosing.
3Ease of manufacture
If conventional block shapes are used, then manufacturing is simple, but surface area changes substantially during dissolution
Solution Approach 1:
The cylindrical block geometry, while slightly more complex than simple rectangular blocks, remains manufacturable using standard molding or machining processes. The curved surface maintains substantially constant area during dissolution, achieving the dual benefit of reasonable manufacturing ease and stable dosing performance.
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 ensures a consistent chemical concentration in the fluid over a longer period, reducing the need for frequent block replacements and minimizing storage requirements, while allowing for adjustable chemical concentration through flow regulation.
Implementation Method 1
the block including the surfactant dissolves and/or erodes into the fluid
Implementation Method 2
the block including the surfactant dissolves and/or erodes into the fluid
Data Source
AI summary
A block for chemically dosing a stream of fluid flowing past the block, the block comprising at least one surface for the fluid to flow past to dissolve and/or erode the block, wherein the block is shaped to enable the at least one surface to be dissolved and/or eroded without a substantial change in the area of the at least one surface.