Sealing Plug With Differentiated Head Compressive Strength
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Solution Overview
Problem
Existing sealing plugs for holes in concrete walls often fail to provide a hermetic seal, allowing water leaks due to insufficient sealing between the protective tube and the concrete, requiring additional sealing means and specialized skills.
Innovation Solution
A sealing plug comprising an elastic body with a main body and a head, where the head has a compressive strength less than the main body, radially expands when the stem is pulled, ensuring both internal and external hermetic closure of the hole without additional sealing means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sealing plug with uniform elastic body is used, then the plug can be easily manufactured, but it fails to provide hermetic sealing both internally and externally, allowing water leaks
Solution Approach 1:
The elastic body is designed with non-uniform compressive strength: the head portion has lower compressive strength than the main body. This local differentiation allows the head to deform and seal against the protective tube while the main body maintains structural integrity for internal sealing, resolving the contradiction between sealing effectiveness and structural simplicity.
2Reliability
If additional sealing means such as O-rings, fillers, or cements are used, then hermetic sealing can be achieved, but the sealing process becomes more complex and requires specialized skills
Solution Approach 1:
The elastic body with differentiated compressive strength performs self-sealing: the head portion automatically deforms to seal against the protective tube when the plug is installed, while the main body provides internal sealing. This eliminates the need for additional sealing materials and specialized sealing processes, allowing workers without specialized skills to achieve hermetic sealing.
3Reliability
If the head of the elastic body has the same compressive strength as the main body, then the plug structure is simple, but the head cannot deform sufficiently to seal against the protective tube
Solution Approach 1:
The head portion is designed with lower compressive strength than the main body, enabling it to deform and conform to the protective tube surface for effective external sealing. The main body retains higher compressive strength to maintain structural integrity and provide internal sealing, resolving the contradiction between external sealing capability and overall structural strength.
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 plug effectively seals both the inner and outer surfaces of the hole, preventing water leaks and eliminating the need for additional sealing materials or specialized skills, providing a reliable and economical solution for sealing holes in concrete walls and water tanks.
Implementation Method 1
an elastic body and a stem coaxially assembled to one another. The elastic body may include a main body which is configured for being expanded radially when pulling on the free end of the stem
Data Source
AI summary
A sealing plug including an elastic body and a stem coaxially assembled to one another. The elastic body has a main body which is suitable for being expanded radially when pulling on the free end of the stem which emerges out of said elastic body. The elastic body also has a head attached to the main body, the head having a compressive strength less than that in the main body.