Drain Closure Seal Structure for Sewer Gas Backflow Blocking
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Solution Overview
Problem
Existing drain pipe closure protection devices fail to allow full flow through the drain, provide access for maintenance, prevent evaporation, and block sewer gas escape when the primary closure fails.
Innovation Solution
A drain pipe waste water closure protection device featuring a conical body with a corrosion-resistant radial compression cylinder and quadruple pressure accumulating seals, made from elastomer with adhesion prevention additives, allowing fluid flow while blocking backflow and maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional drain pipe closure protection device is used, then the structure provides basic sealing, but it fails to allow full flow through the drain and provides no access for maintenance
Solution Approach 1:
The device is divided into multiple functional segments: a conical body for flow guidance, radial disc seals for sealing, a compression cylinder for maintaining seal pressure, and a quadruple pressure accumulating seal for backup protection. This segmentation allows each component to perform its specific function optimally while maintaining full drainage flow and enabling maintenance access to the primary closure.
2Reliability
If a simple seal structure is used, then the device complexity is low, but it fails to prevent evaporation and block sewer gas escape when the primary closure fails
Solution Approach 1:
The quadruple pressure accumulating seal acts as a pre-positioned backup sealing mechanism. It remains dormant during normal operation but automatically activates when the primary water seal fails, providing redundant protection against sewer gas escape. This beforehand cushioning approach enhances reliability without requiring complex active control systems.
Solution Approach 2:
The device employs composite material construction: the conical body and seals are made from elastomer imbibed with adhesion prevention additives for optimal sealing and slip resistance, while the compression cylinder is made from corrosion-resistant stainless steel. This composite approach provides both the necessary sealing flexibility and structural durability.
3Productivity
If a rigid seal structure is used, then the structural integrity is high, but it allows adhesion and fails to provide full flow through the drain
Solution Approach 1:
The radial disc seals and quadruple pressure accumulating seal are constructed from flexible elastomer materials that can deform to conform to the drain geometry and maintain sealing contact. The elastomer's flexibility allows full drainage flow while the adhesion prevention additives and compression cylinder maintain structural integrity and prevent seal degradation.
4Duration of action of stationary object
If a corrosion-resistant material is used for the compression cylinder, then the durability is improved, but the manufacturing complexity increases
Solution Approach 1:
The compression cylinder is manufactured from stainless steel, changing the material parameter to achieve superior corrosion resistance and durability. While stainless steel manufacturing is slightly more complex than standard materials, the cylinder's simple cylindrical geometry and embedding process keep the overall manufacturing complexity manageable while providing long-term durability in corrosive sewer environments.
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
Ensures unobstructed drainage flow, allows maintenance access, prevents evaporation, and effectively blocks sewer gas backflow at atmospheric pressure, enhancing the reliability of the primary drain seal.
Implementation Method 1
the drain pipe waste water closure protection device is capable of blocking backflow of gas or fluid from the waste water pipe into the drain when the pressure in the waste water pipe is equal to or higher than atmospheric pressure
Implementation Method 2
a corrosion resistant, radial compression cylinder embedded in the conical body near the inlet, the corrosion resistant, radial compression cylinder comprised of a strong, hard, resilient material
Data Source
AI summary
An embodiment includes a drain pipe waste water closure protection device which allows passage of fluids through a drain into a pipe waste water closure and a waste water pipe while preventing backflow of fluid or gas from the waste water pipe and pipe waste water closure, as well as preventing evaporation of a water-containing pipe waste water closure located below the drain pipe waste water closure protection device in the waste water pipe. Embodiment drain pipe waste water closure protection devices are easily installed in existing or new drains. Embodiments have two radial disc seals which insure a strong seal between the drain pipe waste water closure protection device and the drain wall. Embodiments include a reinforcing band embedded below the radial disc seals which prevents failure of the radial disc seals.Embodiments include a quadruple pressure accumulating seal which protects against the flow of gas or fluid from the waste water pipe.