Ribbed Sealing Connection for Sanitary Valve O-Ring Extrusion
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Solution Overview
Problem
In sanitary installations, sealing rings often experience material extrusion when pressed into limited spaces, leading to gap formations and compromised seals, particularly in confined areas.
Innovation Solution
The use of a support surface with circumferential ribs on the housing part of sanitary installations, which provides a structured surface for the sealing ring to absorb material and prevent extrusions, ensuring a secure seal while allowing for variable filling and reduced pressure on individual ribs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing ring is pressed into a limited receiving area, then the sealing effect is improved, but gap extrusions form in the sealing ring
Solution Approach 1:
The support surface is segmented into multiple ribs that are distributed across the surface. Each rib independently supports and distributes the compression force, preventing localized material extrusion while maintaining overall sealing effectiveness. The ribs divide the receiving area into multiple zones that can accommodate sealing ring material deformation.
Solution Approach 2:
The solution transitions from a flat, two-dimensional support surface to a three-dimensional structured surface with ribs. This dimensional change creates additional volume and escape zones above the support surface where sealing ring material can deform and redistribute, preventing gap extrusions while maintaining compression sealing.
2Stress or pressure
If the sealing ring is compressed in a confined space, then the sealing pressure is increased, but the material oozes out of the limited receiving area
Solution Approach 1:
Multiple ribs segment the support surface to distribute compression forces across different locations. This segmentation allows the sealing ring material to deform and redistribute along the rib structures rather than being forced to ooze outward, maintaining high sealing pressure without material loss.
Solution Approach 2:
The ribs act as intermediary structures between the compression force and the sealing ring material. They provide a structured interface that guides material deformation, allowing compression pressure to be effectively transmitted to create sealing while preventing uncontrolled material extrusion from the receiving area.
3Device complexity
If a flat support surface is used, then the structure is simple, but gap extrusions form and sealing effectiveness is reduced
Solution Approach 1:
The ribs introduce curved and profiled surfaces to the support structure, creating a three-dimensional geometry that facilitates sealing ring material deformation and distribution. This curved surface approach prevents gap extrusions by providing escape zones, while the ribbed pattern maintains relative structural simplicity through repetitive geometric elements.
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 effectively prevents material extrusion, enhances load distribution, and maintains the sealing effectiveness regardless of the sealing ring's size or contact pressure, improving the durability and reliability of the seal.
Implementation Method 1
The structured surface creates deflection areas that can absorb sealing ring material when the sealing ring is compressed
Implementation Method 2
The deflection areas can be defined, for example, by one or more ribs and/or other parts of the sanitary fitting
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
Thus, a sanitary installation part (1), which may be designed, for example, as a valve (2) and/or a diverter valve (3), is provided, in which at least one sealing ring (9, 18, 19, 20), which may be designed, for example, as an O-ring, rests on a bearing surface (10, 22) on a housing part (11, 21) of the sanitary installation part (1), and wherein the bearing surface (10, 22) has at least one preferably circumferential rib (12, 13, 14, 27, 28, 29, 30, 31, 32, 33, 34).Furthermore, a sealing connection (200) between two stationary parts (11, 21, 100) is proposed, wherein at least one of the parts (11, 21, 100) can be a housing part (11, 21) of a sanitary installation part (1), wherein the sanitary installation part (1) can be a sanitary installation part (1) according to the invention, wherein a sealing ring (9, 18, 19, 20) is inserted between the two parts (11, 21, 100), and wherein each of the two parts (11, 21, 100) forms a pressing surface (201, 202) for the sealing ring (9, 18, 19, 20), and wherein at least one of the pressing surfaces (201, 202) has at least one preferably circumferential rib (12, 13, 14, 27, 28, 29, 30). 31, 32, 33, 34). Furthermore, a sanitary fitting (100) is proposed which comprises a sanitary installation part (1) according to the invention and/or a sealing connection (200) according to the invention.