Black Tank Flush Adapter for Direct Interior Pressure Washing
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Solution Overview
Problem
Conventional black tank flush systems for recreational vehicles are inefficient in applying water pressure directly to the interior surfaces, leading to decreased cleaning effectiveness due to the hose end being attached externally, resulting in reduced pressure washing efficiency.
Innovation Solution
A vehicle black tank sewer flush adapter with a tubular body and boss connector allows the water hose to pass through, enabling direct application of the water stream into the tank, combined with a flexible sealing washer and fastener for secure and leak-resistant attachment, allowing for adjustable nozzle positioning and accommodating various hose diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the water hose is attached externally to the adapter, then the attachment is simple, but the water stream cannot be applied directly to the interior surfaces, reducing cleaning effectiveness
Solution Approach 1:
The water hose is nested through the boss connector structure, passing through its hollow interior to reach the tank interior. This allows the hose to be positioned inside the tank while maintaining a simple external attachment interface, resolving the contradiction between ease of attachment and cleaning effectiveness.
Solution Approach 2:
The boss connector acts as an intermediary structure that facilitates the passage of the water hose from the external attachment point to the interior of the black tank. This mediator enables direct water application to interior surfaces while maintaining simple external connectivity.
2Device complexity
If the hose attachment structure is simplified, then the device complexity is reduced, but the sealing reliability decreases
Solution Approach 1:
A flexible sealing washer is incorporated into the boss connector structure to provide reliable sealing between the water hose and the adapter. This flexible element maintains leak-resistant sealing while keeping the overall attachment structure simple and easy to assemble.
3Adaptability or versatility
If the water hose can be positioned freely, then the nozzle positioning is adjustable for better cleaning, but the sealing becomes difficult to maintain
Solution Approach 1:
The flexible sealing washer accommodates adjustments in hose position while maintaining seal integrity. Its flexibility allows it to conform to slight position variations of the water hose, ensuring leak-resistant sealing regardless of minor positioning changes.
Solution Approach 2:
The sealing system is designed to be dynamic rather than rigid, allowing the flexible washer to adapt to hose position changes. This dynamic sealing approach maintains reliability while enabling the adaptability needed for effective cleaning operations.
Data Source
AI summary
A black tank sewer flush adapter comprises a tubular body, a boss connector connected to or integrally formed to the tubular body, a flexible sealing washer, and a fastener. The fastener is for forming an attachment with the distal end of the boss connector while the water hose passes longitudinally through at least all the opening of the fastener, the opening of the flexible sealing washer, and the distal end opening of the boss connector. By allowing the water stream emitting end of the water hose to pass through the boss connector and the proximal end of the adapter and into a black tank, the water stream can be applied directly to the interior surfaces of the black tank and a net increase in dislodging adhered sludge from the interior surfaces of the black tank is observed.