Sealed Float Cup for Leak-Proof Toilet Tank
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Solution Overview
Problem
Conventional toilet tanks face issues with water leakage, where the volume of leakage can exceed or be less than the inflow, leading to unstable water levels and ineffective blocking of the float cup bottom hole, resulting in incomplete water supply control.
Innovation Solution
A leak-proof toilet tank design featuring a sealed float cup with a double-water-supply valve system, including a sub-tank and siphon drain devices, which ensures the float is maintained in a predetermined position by providing additional water pathways from the water supply pipe to the float cup, and a siphon drain mechanism to prevent overflow and maintain water level stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the float cup bottom is open (conventional design), then water can flow freely to push the float up, but water leakage causes unstable water levels and ineffective blocking of the float cup bottom hole
Solution Approach 1:
The float cup is divided into two functional zones: an upper sealed chamber that maintains stable water level for reliable float positioning, and a lower connection region that allows controlled water flow. This segmentation resolves the contradiction by isolating the float mechanism from water level fluctuations while maintaining the water flow pathway.
Solution Approach 2:
A sealed bottom structure acts as an intermediary between the water flow path and the float mechanism. It transmits the necessary water pressure and flow control while preventing direct water level changes from affecting the float position, thus maintaining both reliability and stability.
2Reliability
If the water level rises above the float cup to push the float up, then water supply can be blocked, but if leakage volume exceeds inflow volume, the water level cannot push the piston disc up to block the float cup bottom hole
Solution Approach 1:
The sealed bottom is pre-configured with a sufficient air cushion volume that can compensate for water leakage before the float needs to activate. This preliminary preparation ensures that even when leakage exceeds inflow, the float cup maintains enough water volume to push the float up and block the water supply effectively.
Solution Approach 2:
The system changes the physical parameter of the float cup bottom from open to sealed, fundamentally altering the water volume dynamics. This allows the system to maintain a stable minimum water volume regardless of leakage rate, ensuring the float can always be pushed to the blocking position when needed.
3Stability of the object's composition
If a sealed float cup is used to prevent water leakage, then water level stability improves, but the structure becomes more complex
Solution Approach 1:
Only the float cup bottom is sealed while the rest of the float cup structure remains simple and open. This localized application of sealing provides the necessary water level stability without requiring a complete redesign of the entire float cup, thus minimizing structural complexity while achieving the stability goal.
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 effectively prevents water leakage by maintaining the float's position and ensuring consistent water supply control, even during fluctuations in water level, thereby stabilizing the water level in the float cup and maintaining efficient water supply management.
Implementation Method 1
the float contained in the float cup will be pushed up to a predetermined position by the buoyancy force
Implementation Method 2
a siphon drain mechanism to prevent overflow and maintain water level stability
Data Source
AI summary
A leak-proof toilet tank, includes a toilet tank, a water-supply valve, a float cup, a float and a sealed drain device; wherein, the float cup has a sealed bottom. When the water supply is filled to the toilet tank, the water level raises up to make the float blocking the water supply. When leaks water leakage, the float cup does not leak water because of the sealed bottom, and the water level is not changed, further maintains the float to the predetermined position. The present disclosure further provides a passway for supplying water to the float cup. Even if water leakage happens, the float can be pushed to block the water supply by filling the water in the sub-tank into the float cup or by supplying water directly by the water supply pipe, so that reaching the effect of leak-proof of the toilet tank.