Adjustable Float Chamber Flush Valve for Toilet Tanks
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Solution Overview
Problem
Existing flush valve structures for toilet tanks do not allow for adjustable water volume discharge during a single flush, limiting their versatility and effectiveness across different toilet models with varying flushing characteristics.
Innovation Solution
A flush valve structure with a float assembly that includes an adjustable float chamber volume, achieved by a closure member within an outer shell that can be adjusted relative to the shell, allowing for varying buoyancy and water discharge quantities, and a flared extension with a skewed configuration to ensure proper sealing and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the float chamber volume is fixed, then the manufacturing process is simple, but the adaptability to different toilet models is poor
Solution Approach 1:
The float chamber volume is made adjustable through a threaded rod mechanism that allows the closure member to be positioned at different heights relative to the outer shell. This dynamic adjustment capability enables the same flush valve structure to adapt to different toilet models with varying flushing requirements, resolving the contradiction between adaptability and device complexity.
2Reliability
If the float assembly diameter is greater than the outlet hole diameter, then the sealing effectiveness is improved, but the installation complexity increases
Solution Approach 1:
The outer shell of the float assembly is designed with a flared configuration where the diameter at the lower end is greater than the diameter at the upper end. This curved, flared shape allows the float assembly to seal effectively against the outlet hole while facilitating easier installation and alignment, resolving the contradiction between sealing effectiveness and installation complexity.
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
Enables adjustable water volume discharge, accommodating different toilet models and ensuring effective waste removal by allowing a single flush valve model to be used across multiple toilet assemblies with unique flushing requirements.
Implementation Method 1
a float assembly that is movable relative to the valve base between a sealing position in which a second valve member at a lower end of the float assembly engages the first valve member
Data Source
AI summary
A toilet tank flush valve structure includes a valve base for installation in the outlet hole formed in the floor of a toilet tank and defining a water outflow passage and including a first valve member at the upper end of the water outflow passage. A float assembly is movable relative to the valve base between a sealing position in which a second valve member at a lower end of the float assembly engages the first valve member in sealing relationship and a flushing position in which the second valve member is spaced upwardly from the first valve member. The float assembly includes an outer shell that is open downwards and has a lower edge at which the shell is provided with the second valve member, and a closure member within the outer shell and cooperating with the outer shell to define a float chamber. The closure member is adjustable in position relative to the outer shell, whereby the float chamber is adjustable in volume.