Split Dust Seal Ring Structure for Cut-Edge Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dust seal rings do not provide sufficient sealing performance at their cut portions, leading to oil leakage and foreign matter intrusion.
Innovation Solution
A dust seal ring with an annular body portion having inwardly inclined lips and protrusions, along with retaining plates, to enhance sealing performance by minimizing lip collapse under pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a split seal ring structure is used to enable replacement without disassembly, then maintenance time and cost are reduced, but sealing performance at the cut portion deteriorates
Solution Approach 1:
The seal ring is divided into a body seal and end seals that can be separately assembled and replaced, allowing maintenance without full disassembly while maintaining sealing integrity through the segmented design
Solution Approach 2:
The end seals are designed with asymmetric structures including inclined surfaces and protrusions that create directional sealing forces, preventing leakage at the cut portion while accommodating the split design
2Reliability
If the seal ring is designed as a complete annular structure, then sealing performance is improved, but replacement requires full disassembly of the apparatus
Solution Approach 1:
The seal ring is divided into a body seal and end seals that can be separately assembled and replaced, allowing maintenance without full disassembly while maintaining sealing integrity through the segmented design
Solution Approach 2:
The end seals extend in the axial direction beyond the body seal, creating overlapping sealing zones that maintain radial sealing performance while enabling axial方向的 assembly and disassembly for easier replacement
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
The design effectively reduces oil leakage and foreign matter intrusion by maintaining lip integrity under pressure, enhancing overall sealing efficiency.
Implementation Method 1
a first lip (112) extending, on an inner surface in a radial direction of the body portion, while inclining inwardly away from the body portion on one side in a direction of extension of the central axis, and a second lip (113) extending, on the inner surface in the radial direction of the body portion, while inclining inwardly away from the body portion on the other side in the direction of extension of the central axis
Implementation Method 2
a body seal abutment surface (110c) provided to be joined on a split surface of the body seal (110)
Implementation Method 3
the body portion includes a first protrusion (114) protruding, on an outer surface in the radial direction of the body portion, outwardly on the one side in the direction of extension of the central axis, and a second protrusion (115) protruding, on the outer surface in the radial direction of the body portion, outwardly on the other side in the direction of extension of the central axis
Data Source
AI summary
A dust seal ring includes a body portion of an approximately rectangular shape, a first lip extending, on an inner surface in a radial direction of the body portion, while inclining inwardly away from the body portion on one side in a direction of extension of a central axis, and a second lip extending, on the inner surface in the radial direction of the body portion, while inclining inwardly away from the body portion on the other side in the direction of extension of the central axis.