Faucet Control Valve Sealing Structure for Leakproofing
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Solution Overview
Problem
Conventional faucets suffer from structural weakness and inadequate leakproofing due to the twisting or deformation of O-rings under torque force, leading to potential leakage and the need for frequent replacements.
Innovation Solution
A control valve design featuring a balancing valve with symmetric shells, upper and lower O-rings, a water outlet unit with sealing rings, and a flange and locating ring configuration that disperses force evenly, preventing twisting and enhancing leakproofing by ensuring the sealing rings are pressed downwardly rather than twisted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shell is pressed by a user to operate the control valve, then the valve operation is enabled, but the O-ring is twisted or deformed leading to leakage
Solution Approach 1:
The shell is divided into a first shell and a second shell that are symmetrically formed and fit together. This segmentation distributes the pressing force from user operation across multiple surfaces and sealing points, preventing concentration of torque on a single O-ring location. The symmetric structure ensures balanced force distribution during valve operation.
Solution Approach 2:
The patent introduces multiple O-rings positioned at different locations between the first shell and second shell, as well as between the control valve and faucet body. These intermediary sealing elements act as buffers that accommodate operational forces without compromising the leakproof effect, replacing the single O-ring design with a distributed sealing system.
2Device complexity
If a single O-ring is used between the shell and faucet body, then the structure is simple, but the O-ring breaks or deforms under torque force
Solution Approach 1:
The single O-ring sealing system is segmented into multiple O-rings positioned at different locations. The first O-ring is disposed between the first shell and second shell, while additional O-rings are positioned between the control valve and faucet body. This segmentation distributes mechanical stress and prevents single-point failure under torque loading.
Solution Approach 2:
The patent employs multiple O-rings as preliminary cushioning elements that absorb and distribute torque forces before they can concentrate on any single sealing point. The symmetric shell structure provides additional cushioning by distributing operational forces across multiple contact surfaces, preventing premature O-ring failure.
3Reliability
If the O-ring is disposed between the shell and faucet body, then leakproofing is achieved, but the O-ring is twisted under torque force during operation
Solution Approach 1:
The sealing system is segmented into multiple O-rings positioned at different locations: one between the first shell and second shell, and additional O-rings between the control valve and faucet body. This segmentation prevents any single O-ring from bearing the full torque load during operation, maintaining both leakproofing and O-ring integrity.
Solution Approach 2:
The patent employs asymmetric positioning of multiple O-rings at different locations around the valve assembly rather than a single symmetric O-ring position. This asymmetric distribution of sealing elements provides better resistance to rotational torque forces, preventing twisting and deformation during valve operation while maintaining reliable sealing.
Data Source
AI summary
A control valve for faucet may comprise a control valve, a balancing valve, a water outlet unit, and a faucet body. A lower end of the control valve has a water inlet chamber and a water outlet chamber, and the balancing valve secured inside the water inlet chamber comprises a first shell and a second shell which are formed symmetrically and are configured to fit together to secure a pressure regulator therein. The water outlet unit secured inside the water outlet chamber has a first through hole, and a lower end thereof comprises a lower sealing ring which covers around a lower edge of the water outlet chamber. When control valve connected to the faucet body, the lower sealing ring only will be pressed downwardly instead of being twisted thereby reducing the possibility of damage or deformation and improving the strength of structure and the leakproof effect.