Seal Set with Slide Ring for Dynamic Piston Sealing
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Solution Overview
Problem
Seal sets for piston cylinder arrangements face challenges in maintaining effective sealing while minimizing friction, especially under high pressure differences and dynamic conditions, often requiring trade-offs between sealing efficiency and interference with relative movements.
Innovation Solution
A seal set design featuring a main body with a radial circumferential receiving groove and a slide ring that covers the groove, with a conical ring surface and a sealing lip, allowing reduced surface pressure and preventing direct contact between the main body and slide partner, optimized for highly dynamic applications with reduced friction and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seal set uses a conventional design with direct contact between the main body and slide partner part, then sealing effectiveness is improved, but friction increases excessively
Solution Approach 1:
The patent introduces a slide ring as an intermediary component between the main body and the slide partner part. The slide ring contacts the slide partner part while the main body contacts the slide ring, thereby mediating the interaction and reducing direct contact friction between the main body and slide partner part, while still maintaining effective sealing through the sealing lip.
2Reliability
If the seal set is designed for high pressure difference sealing, then sealing reliability is improved, but the interference with relative movements increases
Solution Approach 1:
The patent segments the sealing function into two separate components: the main body with sealing lip responsible for pressure sealing, and the slide ring responsible for low-friction sliding contact. This segmentation allows each component to optimize its specific function without compromising the other, enabling effective sealing under pressure differences while maintaining smooth relative movements.
3Ease of manufacture
If the seal set uses a simple design, then manufacturing ease is improved, but robustness under heavy-load applications decreases
Solution Approach 1:
The patent employs a composite structure combining the main body (typically elastomeric material for sealing) and the slide ring (typically PTFE or similar low-friction material for sliding contact). This composite design leverages the advantages of different materials to achieve both manufacturing feasibility and high robustness under heavy-load applications, with each material selected for its specific functional properties.
Data Source
AI summary
The disclosure relates to a seal set, and to a sealing arrangement comprising a seal set. The seal set is arranged for sealing a primary side against a secondary side and comprises a main body which is arranged to be received at a support part, and a slide ring for contacting a slide surface of a slide partner part, wherein the main body is arranged in an annular fashion and comprises a radial circumferential receiving groove for the slide ring, wherein further a radial circumferential sealing lip is provided at the main body, which is formed between the receiving groove for the slide ring and a secondary-side end of the main body, wherein the sealing lip comprises a tip region and a conical ring surface adjoining the tip region, and wherein the slide ring, in a mounted state, at least sectionally covers the receiving groove, a primary-side adjoining surface adjoining the receiving groove, and the conical ring surface.