Irrigation Pipe Coupling With O-Ring Seal and Rotational Lock
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Solution Overview
Problem
Conventional irrigation pipe coupling designs suffer from water leakage issues due to loose mechanical engagement and inadequate sealing, particularly when pressure is released, and they can also slip during towing, requiring partial disassembly and reconnection, which is labor-intensive and inefficient.
Innovation Solution
The development of mechanically engaging couplings with a female coupling featuring a cylindrical receiver and O-ring gasket for a tight fit, along with interleaving fasteners that allow for coaxial insertion and rotation to secure the male coupling, providing a watertight seal and preventing separation during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a loose mechanical engagement with lateral tabs and slots is used to allow flexing at the coupler, then the coupling can accommodate towing movement, but water leakage occurs when pressure is released
Solution Approach 1:
The coupling mechanism is divided into separate functional components: the mechanical engagement system (tabs and slots) handles flexing and positioning, while the O-ring gasket provides dedicated sealing. This segmentation allows each component to optimize its specific function without compromise.
Solution Approach 2:
An O-ring gasket is introduced as an intermediary sealing element between the male and female coupling portions. This intermediary component provides reliable water sealing independent of the mechanical engagement looseness, solving the leakage problem while maintaining flexing capability.
2Adaptability or versatility
If a thick and wide Chevron gasket is used to compensate for loose mechanical connection, then mechanical flexibility is maintained, but water drains out when pressure is released
Solution Approach 1:
The sealing approach changes from relying on gasket compression under pressure (Chevron gasket) to using an O-ring that maintains sealing through its circular geometry and elastic properties, effective both under pressure and when pressure is released.
Solution Approach 2:
The O-ring gasket serves as an intermediary sealing element that prevents water loss regardless of pressure conditions, eliminating the drainage problem associated with conventional Chevron gaskets while preserving mechanical flexibility.
3Productivity
If oblique insertion is required to engage lateral tabs with slots, then quick connection is achieved, but a large gap requires a large gasket that complicates the design
Solution Approach 1:
The oblique insertion requirement and associated large gap problem are eliminated by extracting the lateral tab engagement mechanism and replacing it with coaxial alignment and rotation. This removes the need for large compensating gaskets, simplifying the design.
Solution Approach 2:
Instead of inserting the male coupling at an oblique angle to engage lateral tabs, the invention inverts the engagement sequence: coaxial insertion first, then rotation to engage the fastening structures. This inversion eliminates the large gap requirement and associated gasket complexity.
4Reliability
If interleaving fasteners require rotation after insertion, then watertight seal is achieved, but additional manipulation steps are required
Solution Approach 1:
The sealing function and mechanical fastening function are merged into a single rotational motion. As the male coupling rotates to engage the interleaving fasteners, the O-ring gasket simultaneously achieves its sealing position, combining multiple functions in one action.
Solution Approach 2:
The coupling mechanism transitions from static coaxial alignment to dynamic rotational engagement. The rotation action simultaneously achieves both the mechanical interlocking of fasteners and the proper positioning of the O-ring gasket for sealing, making the additional step efficient and necessary for reliability.
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 secure, watertight connection between irrigation pipes, preventing water loss even at low pressures and allowing for easy disassembly and reassembly without breaking welds or using complex fasteners, thus enhancing water conservation and reducing labor costs.
Implementation Method 1
The cylindrical section of the female coupling may include a gasket (e.g., an O-ring style gasket) for frictional engagement with the outer surface of the male coupling to prevent leakage of water
Data Source
AI summary
Improved couplings for conduit systems include a male coupling and a female coupling. The male coupling and female coupling may be mechanically engaged by inserting the male coupling into a receiver in the female coupling until fastening structures are aligned, and then rotating one or both of the male and female couplings until the fastening structures are overlapping and in interfacial engagement. The male and female couplings provide an efficient coupling solution for end-to-end conduit connection and also addresses a leakage problem in conventional irrigation pipe couplers.