Split Shaft Sleeve Seal Assembly for Easier Ring Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mechanical seal assemblies with one-piece shaft sleeves are costly and difficult to assemble and disassemble, as they require high-quality materials and complex assembly processes, which can lead to handling issues and increased manufacturing costs.
Innovation Solution
A split shaft sleeve mechanical seal assembly with a snap-in connection between two annular sleeve parts, featuring a latching connection with lugs and recesses, and an elastomer seal for clamping the rotating slide ring, allowing for easy assembly, disassembly, and replacement without additional components like screws, while enabling the use of different materials for cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a one-piece shaft sleeve is used, then the mechanical seal assembly can be delivered as a preassembled unit, but the shaft sleeve must be made of high-quality expensive material and causes handling problems during assembly
Solution Approach 1:
The shaft sleeve is divided into two separate annular sleeve parts (first annular sleeve part and second annular sleeve part) that can be assembled separately onto the shaft and then connected together using a snap-in connection. This segmentation allows for easier handling during assembly while maintaining the preassembled unit benefit.
2Device complexity
If a one-piece shaft sleeve is used, then the structure is simple, but high-quality expensive material must be used for the entire shaft sleeve
Solution Approach 1:
Different materials can be used for the first and second annular sleeve parts based on their specific functional requirements. The first sleeve part that contacts the product can be made of high-quality material, while the second sleeve part can be made of less expensive material, optimizing both performance and cost.
3Stability of the object's composition
If a one-piece shaft sleeve is used, then the assembly is complete, but disassembly and replacement of seal rings is difficult
Solution Approach 1:
The shaft sleeve is segmented into two parts connected by a snap-in connection with latching lugs and latching recesses, allowing the connection to be quickly released and the sleeve parts to be separated for easy seal ring replacement, while maintaining a complete assembly during operation.
4Ease of operation
If a snap-in connection with latching lugs is used, then assembly and disassembly is simplified, but additional components are required
Solution Approach 1:
The latching lugs are integrated directly into the structure of the annular sleeve parts themselves, rather than being separate components. This merging of the latching function into the sleeve parts achieves simplified assembly and disassembly without adding significant component complexity.
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
Simplifies assembly and disassembly, reduces manufacturing costs by allowing the use of less expensive materials for non-contacting parts, and prevents damage to the slide ring through the use of an elastomer seal, enhancing the mechanical seal's design and cost-effectiveness.
Implementation Method 1
an elastomer seal for clamping the rotating slide ring
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a slip ring seal arrangement, comprising a slip ring seal with a rotating slip ring (2) and a stationary slip ring (3) which define a sealing gap (4) between slip faces (21, 31), a shaft sleeve arrangement (5) comprising a split shaft sleeve with a first annular sleeve part (51) and a second annular sleeve part (52), which are connected to one another by means of a latching connection (6), wherein the rotating slip ring (2) is arranged on the shaft sleeve arrangement (5), and wherein the latching connection (6) has at least one latching tab (60) and a latching recess (61) that receives the latching tab (60) in order to allow the first sleeve part (51) to be latched together with the second sleeve part (52).