Termite Barrier Seal With One-Way Valving
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Solution Overview
Problem
Existing termite barrier systems fail to effectively seal concrete slabs against unintentional leakage of termicidal formulations from soil, leading to inefficiencies in maintaining termite barriers due to fluid pressure and leakage through injection apertures.
Innovation Solution
A termite barrier seal featuring a hollow seal body with one-way valving, external, and internal seal means to prevent liquid flow from the insertion end to the surface end, combined with a closure cap for sealing engagement, effectively preventing termicidal fluid leakage from the soil beneath concrete slabs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plugs with axially spaced disks are used to close injection holes, then cosmetic closure is achieved, but sealing against liquid transfer under fluid pressure is insufficient
Solution Approach 1:
The seal body is divided into multiple functional segments: external seal means for sealing against the concrete slab, internal seal means for sealing against the injector, and one-way valving means for controlling fluid flow direction. This segmentation allows each component to perform its specific sealing function effectively under fluid pressure.
Solution Approach 2:
The seal body acts as an intermediary component between the concrete slab and the injector, providing a sealed interface that prevents liquid transfer while allowing controlled injection. The one-way valve mechanism serves as a mediator that permits injection flow but prevents reverse flow through the aperture.
2Duration of action of moving object
If regular injection through apertures is used to maintain termite barrier, then termite barrier maintenance is achieved, but unintentional leakage of termicidal formulation occurs
Solution Approach 1:
The harmful reverse flow of termicidal formulation is extracted and removed from the system by the one-way valving means, which allows injection flow to pass through but blocks any reverse flow that would cause leakage. This extracts the problem of leakage while preserving the beneficial injection function.
Solution Approach 2:
The one-way valve mechanism converts the potential harm of fluid pressure causing leakage into a beneficial feature by using the pressure differential to automatically close the valve during injection and prevent reverse flow during non-injection periods, thus eliminating leakage while maintaining barrier effectiveness.
3Ease of operation
If apertures are provided in concrete slab for injection, then termite barrier injection is enabled, but leakage through apertures and adjacent apertures occurs
Solution Approach 1:
The seal body provides localized sealing quality at each aperture by sealing against both the concrete slab externally and the injector internally, creating a sealed chamber that directs fluid flow only through the intended injection path and prevents leakage through the aperture or adjacent apertures.
Solution Approach 2:
The one-way valving means provides dynamic flow control that adapts to injection conditions: it opens to permit flow during injection and automatically closes to prevent reverse flow and leakage. This dynamic response eliminates the harmful leakage effect while maintaining operational capability.
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 termite barrier seal significantly reduces leakage of termicidal formulations by allowing injection while preventing expulsion, ensuring effective maintenance of termite barriers and minimizing fluid pressure issues.
Implementation Method 1
one-way valving means at or about the insertion end or intermediate the insertion end and the surface end of the seal body, the one-way valving means being arranged to permit liquid flow through the axial bore from the surface end to the insertion end, but to prevent liquid flow through the axial bore from the insertion end to the surface end
Implementation Method 2
external seal means about an external surface of the wall of the seal body for sealing the wall of the seal body against the internal surface of a hole drilled through a concrete slab
Implementation Method 3
internal seal means about an internal surface of the wall of the seal body for sealing the wall of the seal body against an external face of an injector when inserted into the bore of the seal body
Data Source
AI summary
A termite barrier seal including a hollow seal body having a wall surrounding an axial bore extending from an insertion end to a surface end. A closure formation is located about the surface end for engagement with a closure for the orifice of the bore at the surface end of the seal body. A one-way valve at or intermediate the insertion end and the surface end of the seal body, the one-way valve arranged to permit liquid flow through the axial bore, but to prevent liquid flow to the surface end. An external seal about the seal body for sealing the wall of the seal body against the internal surface of a hole drilled through a concrete slab. An internal seal engages the seal body for sealing the wall against an external face of an injector when inserted into the bore of the seal body.