Drain Clean-Out Assembly With Selective Fluid Control
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Solution Overview
Problem
When attempting to remove obstructions from sewage drain lines, existing methods often result in spills as sewage drains back through the clean-out fitting, making it difficult to insert rods or cables without causing a mess.
Innovation Solution
The development of drain clean-out assemblies equipped with devices such as plunger assemblies, three-way ball valves, or flapper assemblies that allow for selective control of fluid flow, enabling the drainage of sewage upstream of the obstruction before removing the clean-out plug, thus preventing spills during the removal process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clean-out plug is removed to access the drain line for obstruction removal, then access to the drain line is achieved, but sewage spills out through the fitting
Solution Approach 1:
The clean-out fitting is segmented into multiple functional components: a body, a removable plug, and a separate drainage mechanism. This allows the plug to be removed for access while the drainage system independently controls sewage flow, preventing spillage during obstruction removal operations.
Solution Approach 2:
A drainage hose or conduit acts as an intermediary element, providing a controlled pathway for sewage to exit the drain line separately from the clean-out plug opening. This mediator channel directs sewage away from the work area, enabling safe plug removal without spillage.
2Object-generated harmful factors
If a drainage hose is attached to the clean-out fitting, then sewage can be drained before plug removal, but the device complexity increases
Solution Approach 1:
The drainage hose attachment is integrated into the clean-out fitting body through threaded connections or bayonet mounts, combining the drainage function with the existing plug removal mechanism. This merging approach adds drainage capability without requiring a completely separate system.
Solution Approach 2:
The clean-out fitting is designed with multi-functionality: it serves both as an access point for obstruction removal (via plug removal) and as a drainage point (via hose attachment). This universal design consolidates multiple functions into a single fitting, reducing overall system complexity.
Data Source
AI summary
Drain clean-out assemblies that can be used to drain the contents of a drain line prior to removing a clean-out plug mounted to the assembly or to which the assembly is mounted. The drain clean-out assembly includes clean-out plug and a device for selectively preventing and permitting drainage of a fluid through a drain port of the assembly. The assembly may include a housing having oppositely-disposed first and second ends, wherein the first end of the housing is configured to attach to a drain line, the second end of the housing is a clean-out port, the clean-out plug is removably attached to the clean-out port, and the drain port is defined by and through the clean-out plug and in fluidic communication with an interior of the housing.