Shower Valve Cover Plate Sealing Under Pressure Deformation
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Solution Overview
Problem
Concealed shower faucets experience water leakage due to deformation of the cover plate body under water pressure, which weakens the sealing effect and leads to wear and blockage in downstream valve elements.
Innovation Solution
The cover plate body features protruding inlets and outlets with sealing rings, a water diverting channel, and a filter mounting position, allowing for improved sealing even when deformed, and enabling easy maintenance and filtration to prevent wear and blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cover plate body is directly pressed to the bottom of the inner cavity of the concealed water distribution box, then the installation is simple, but the cover plate body is prone to deformation under water pressure, weakening the sealing effect and causing water leakage
Solution Approach 1:
The sealing structure is segmented into multiple independent sealing rings positioned at different locations (cold water inlet, hot water inlet, and water outlets) rather than relying on a single end-face seal. This segmentation allows each sealing ring to independently maintain sealing at its specific location even when the cover plate body deforms under water pressure.
Solution Approach 2:
The sealing approach transitions from a two-dimensional end-face seal to a three-dimensional protruding cylindrical structure with sealing rings wrapped around the outer cylindrical walls. This dimensional change provides radial sealing capability that compensates for axial deformation of the cover plate body under water pressure.
2Device complexity
If traditional end-face sealing structure is used, then the structure is simple, but the sealing effect is weakened when the cover plate body deforms under water pressure
Solution Approach 1:
The sealing structure extends from a flat end-face (2D) to protruding cylindrical walls (3D), allowing sealing rings to wrap around the circumference. This provides radial sealing that remains effective even when axial deformation occurs under water pressure, maintaining sealing reliability without significantly increasing structural complexity.
Solution Approach 2:
The sealing mechanism changes from relying on end-face contact pressure to utilizing the radial position of sealing rings on protruding cylindrical surfaces. This parameter change allows the sealing interface to remain stable even when the cover plate body undergoes axial deformation under water pressure.
3Device complexity
If no filter is installed, then the structure is simpler, but debris and scale enter the switching valve elements causing wear and blockage at water outlets
Solution Approach 1:
The filter is installed at the water mixing valve mounting position to perform preliminary filtration of debris and scale before water enters the switching valve elements. This preliminary action prevents harmful particles from reaching downstream components, reducing wear and blockage risks.
Solution Approach 2:
The filter acts as an intermediary component between the water inlet and the switching valve elements. It intercepts and removes harmful debris and scale particles from the water flow, protecting the downstream valve elements from wear and blockage without significantly complicating the overall structure.
Data Source
AI summary
The present invention provides a valve element cover plate, comprising a cover plate body. The cover plate body is provided with a water mixing valve mounting position and at least one switching valve mounting position. A cold water inlet, a hot water inlet and water outlets connected to water mixing valve mounting position are arranged on the back of the cover plate body; a water diverting channel is arranged in the cover plate body. A mixed water channel is arranged in the water mixing valve mounting position; fixing parts are arranged on the side of the cover plate body. The present invention has good sealing effect, and can maintain good sealing performance even when the cover plate body is deformed. It also has good filtering effect, and can effectively reduce the wear of downstream switching valve elements, and avoid blockage at the downstream outlets.