Pivoting Flange Sealing for Oblique Wall Bore Installation
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Solution Overview
Problem
Existing devices for passing lines through building walls face challenges in sealing and fastening small diameter pipes without the need for protective tubes, especially when the wall hole is drilled at varying angles, requiring efficient sealing against water and gas ingress.
Innovation Solution
A device featuring a perforated pipe connected to an outer flange with an articulated design, allowing the perforated tube to pivot and align with the wall bore, using an expanding grouting resin to ensure watertight and gas-tight sealing at different angles, with strategically positioned openings to control the flow of the resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a small diameter wall bore is drilled for speedpipe installation, then drilling effort is reduced and hand drills can be used, but sealing against water and gas ingress becomes more difficult
Solution Approach 1:
The sealing system is divided into multiple components: an outer flange with sealing lip, an inner flange with sealing lip, and a speedpipe with integrated sealing elements. Each component contributes to the overall sealing effectiveness, allowing reliable sealing in small diameter bores where a single sealing mechanism would be insufficient.
Solution Approach 2:
The flanges are pre-equipped with sealing lips and the speedpipe has pre-installed sealing elements. These sealing components are prepared in advance and positioned before the actual sealing action occurs when the assembly is installed in the wall bore, ensuring proper sealing geometry is maintained during installation.
2Adaptability or versatility
If the wall bore is drilled at varying angles (including diagonally), then installation flexibility is improved, but mechanical fastening and sealing reliability deteriorates
Solution Approach 1:
The articulation mechanism between the outer and inner flanges allows the assembly to dynamically adapt to different installation angles. The flanges can pivot relative to each other to accommodate horizontal, vertical, and diagonal bore orientations while maintaining sealing contact through the resilient sealing lips that deform to match the bore angle.
Solution Approach 2:
The sealing lips are designed as flexible elements that can deform and conform to the wall bore surface at various angles. This flexibility allows the sealing interface to maintain reliable contact whether the bore is horizontal, vertical, or diagonal, without requiring rigid mechanical fastening at specific orientations.
3Reliability
If a perforated tube with filler substance is used for sealing, then sealing effectiveness is improved, but device complexity and material usage increase
Solution Approach 1:
The invention extracts and eliminates the perforated tube and filler substance components from the sealing system. Instead, it uses a simplified flange assembly with integrated sealing lips that directly contact the wall bore, removing the need for additional materials and complex installation procedures while maintaining sealing effectiveness.
Solution Approach 2:
The sealing function is merged into the flange structure itself through integrated sealing lips, rather than being a separate component. The outer and inner flanges combine mechanical fastening and sealing functions in a single integrated assembly, reducing overall device complexity while achieving reliable sealing.
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 device effectively seals the wall hole at various angles, preventing water and gas ingress, while minimizing material usage and effort, by ensuring the resin fills the gap between the pipe and the wall, even when the bore is drilled obliquely.
Implementation Method 1
using an expanding grouting resin to ensure watertight and gas-tight sealing
Data Source
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AI summary
The device for passing at least one conduit through a wall bore has an outer flange, which covers the bore on the outside of the building and rests against the building wall, through which the conduit can be passed, and an inner flange, which covers the bore on the inside of the building and rests against the building wall, through which the conduit can be passed. A perforated tube is pivotably connected to the inner side of the outer flange, surrounding the conduit in the bore at least over a portion of its length with a radial clearance. The outer flange can be pressed tightly against the building wall both when the bore passes through the building wall horizontally and at angles to it. A filling substance, initially flowable, then foaming and hardening, is fed into the perforated tube from the outside of the outer flange, thus sealing the outer flange against the wall.