Slide Switch Valve Core With Axial Guide for Side-Feed Sealing
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Solution Overview
Problem
Existing slide switch valve cores suffer from poor sealing performance when water feeding and discharging connections are reversed, leading to axial displacement of the static ceramic chip and deformation of the sealing ring, causing sealing failure, especially under high water pressure.
Innovation Solution
Incorporating an annular guiding element that can move axially, radially fixed in the barrel, and an elastic element between the guiding element and the barrel, which ensures the movable and static ceramic chips remain close-abutted under water pressure, maintaining sealing performance regardless of the inlet or outlet configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If water feeding and discharging connections are reversed (side inlet, bottom outlet), then the valve cannot be used normally, but the sealing ring deforms and static ceramic chip displaces axially causing sealing failure
Solution Approach 1:
The guiding element is designed to be movable axially rather than fixed, allowing it to adapt its position dynamically. When water pressure acts on the ceramic chips, the guiding element moves axially to accommodate the displacement, maintaining the sealing interface between ceramic chips while preventing excessive axial displacement that would cause sealing failure. This dynamic adjustment enables the valve to function reliably regardless of inlet/outlet orientation.
2Reliability
If a support skeleton is added to the bottom sealing ring to reduce deformation, then sealing performance improves, but device complexity increases
Solution Approach 1:
The invention extracts the sealing function from the bottom sealing ring and relocates it to the side of the barrel where the sealing element is positioned. By moving the sealing interface away from the bottom, the need for a complex support skeleton in the bottom sealing ring is eliminated. The sealing is now performed by the sealing element on the side, which does not require additional reinforcement structures.
3Device complexity
If the static ceramic chip is positioned above the sealing ring, then the valve structure is compact, but axial displacement occurs under water pressure causing sealing failure
Solution Approach 1:
The guiding element serves as an intermediary between the static ceramic chip and the barrel. It provides a guiding surface that constrains the axial displacement of the static ceramic chip while allowing controlled movement. The guiding element translates and limits the motion of ceramic chips, ensuring they remain properly positioned for sealing while accommodating pressure-induced movements, thus maintaining both compact structure and reliable sealing.
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 configuration allows the slide switch valve core to freely select inlet and outlet orientations, ensuring stable sealing performance by limiting axial movement and maintaining close contact between the ceramic chips, even under varying water pressures, thus enhancing its operational range and reliability.
Implementation Method 1
at least one elastic element is arranged between an upper end of the guiding element and the barrel... relying on the action of the elasticity of the elastic element itself, the guiding element, the movable ceramic chip and the static ceramic chip are axially close abutted against the sealing element
Data Source
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AI summary
The present invention provides a slide switch valve core, and belongs to the technical field of valves. The slide switch valve core solves a problem of a poor sealing performance of side water feeding of an existing slide switch valve. The slide switch valve core includes a valve rod, a barrel, and a movable ceramic chip and a static ceramic chip which are arranged in the barrel in an up-down jointing manner. A first water passage hole is formed in a bottom of the barrel. A second water passage hole is formed in a side of the barrel. The valve rod is capable of driving the movable ceramic chip to slide relative to the static ceramic chip and enable the first water passage hole to communicate with the second water passage hole. An annular guiding element which is capable of moving axially is further radially fixed in the barrel, is located at an upper part of the movable ceramic chip, and is capable of guiding the movable ceramic chip to slide relative to the static ceramic chip. A sealing element is arranged between a lower end of the static ceramic chip and the barrel. An elastic element is arranged between an upper end of the guiding element and the barrel. The slide switch valve core can ensure the sealing performance of both bottom water feeding and side water feeding, and has an advantage of a wide range of applications.