Pull-Out Faucet Pressure Reducing Valve for Seal Ring Stability
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Solution Overview
Problem
Conventional pressure reducing valves suffer from sudden deformation and leakage due to uneven force on the seal ring, leading to incomplete sealing and potential damage from high water pressure.
Innovation Solution
The pressure reducing valve features a piston with a discharging section comprising one or more discharging passages that allow water to flow out, preventing sudden closure of water passing holes and maintaining constant pressure, while the elastic member ensures the seal ring is not deformed or squeezed out, and the valve is integrated with a pull-out faucet for controlled water discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the peripheral wall acts on the seal ring with sudden force, then the water passage closes quickly, but the seal ring deforms and is squeezed out causing leakage
Solution Approach 1:
The patent introduces a buffer cavity and buffer hole structure that provides gradual pressure release during the closing process. When the peripheral wall moves toward the connector, the buffer cavity allows water pressure to be gradually equalized through the buffer hole, preventing sudden force application on the seal ring. This cushioning effect maintains sealing reliability while achieving closure, directly resolving the contradiction between fast closure and preventing seal ring deformation.
2Productivity
If the water passage is completely closed suddenly, then water flow stops immediately, but pressure mutation deforms the seal ring and causes it to be squeezed out
Solution Approach 1:
The patent implements preliminary pressure equalization through the buffer cavity and buffer hole before complete closure occurs. As the peripheral wall approaches the connector, water pressure builds in the buffer cavity and gradually equalizes through the buffer hole, preparing the system for closure without sudden pressure mutation. This preliminary action prevents seal ring deformation while maintaining efficient flow control, resolving the contradiction between flow control efficiency and seal ring stability.
3Reliability
If the piston structure is added with discharging section and sealed section, then seal ring deformation is prevented, but the device complexity increases
Solution Approach 1:
The patent divides the piston peripheral wall into functionally distinct segments: the discharging section with buffer cavity and buffer hole for pressure equalization, and the sealed section with sealing groove for seal ring placement. This segmentation allows each section to perform its specific function independently, preventing seal ring deformation through the discharging section while maintaining a relatively simple overall structure. The modular segmentation resolves the contradiction between improving sealing reliability and minimizing device 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
This design prevents seal ring deformation and leakage, maintains constant pressure, and allows for direct control of water passages, enhancing the faucet's appearance and functionality by integrating pressure regulation within the faucet's structure.
Implementation Method 1
an elastic member, wherein the elastic member acts on the piston to generate an elastic force configured to drive the piston to be separated from the connector
Implementation Method 2
the discharging section defines one or more discharging passages... the one or more discharging passages continue to discharge water, so as to prevent the water passing holes from being suddenly and completely closed
Implementation Method 3
the sealed section of the peripheral wall is hermetically disposed on the seal ring... achieve a complete seal
Implementation Method 4
a holding pin disposed on the valve body or on the valve bracket respectively protrudes into the holding sleeve... The stop and a mating stop on an outer circumference of the holding pin work together so that when the pressure reducing valve in the open position, the stop and the mating stop limit a sliding distance of the valve body relative to the valve bracket
Data Source
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AI summary
The present disclosure discloses a pressure reducing valve and a pull-out faucet. The pressure reducing valve comprises a valve body, a piston and an elastic member, the valve body comprises a connector, the connector comprises a water passing hole penetrating from an inner side to an outer peripheral surface of the connector, a sealing member encompasses the connector, the piston comprises a bottom wall and a peripheral wall extending upward from a periphery of the bottom wall, an inner peripheral surface of the peripheral wall comprises a discharging section and a sealed section disposed between the discharging section and the bottom wall, the discharging section defines one or more discharging passages, the peripheral wall of the piston is configured to slidably encompass an outer side of the connector, the peripheral wall slides relative to the connector to control the sealed section to cooperate with the sealing member to control the water passing holes to discharge water, and the elastic member acts on the piston to generate an elastic force configured to drive the piston to be separated from the connector. It has following advantages: there will not be a pressure mutation of a portion of the seal ring that results in the seal ring being deformed and being squeezed out, the seal ring is prevented from being squeezed out, the seal ring is prevented from moving.