Flexible Stuffing Box Packing Assembly with Segmented Rings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Prior art stuffing box packing assemblies fail to effectively disperse pressure radially, leading to premature destruction of packing pieces and a short lifespan due to inadequate expansion spaces and stress distribution.
Innovation Solution
A flexible stuffing box packing assembly comprising five round rings with specific inner and outer cylinder configurations, including V-shape recesses and inclined surfaces, allows for sequential pressure transfer and expansion without compromising the seal, ensuring effective stress dispersion and prolonged ring lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If prior art stuffing box packing assembly structure is used, then the assembly can be manufactured with simple structure, but the packing pieces cannot effectively disperse pressure radially leading to premature destruction and short lifespan
Solution Approach 1:
The packing assembly is divided into five separate rings instead of using a single packing piece. This segmentation allows each ring to independently disperse pressure radially and provides multiple expansion spaces between rings, preventing premature destruction and extending the packing assembly lifespan while improving pressure dispersion capability
Solution Approach 2:
The patent introduces radial expansion spaces between the five rings, adding a dimensional aspect for pressure dispersion in the radial direction. This allows pressure to be distributed across multiple dimensions and spaces, significantly improving pressure dispersion capability and preventing concentration of stress on single packing pieces
2Stability of the object's composition
If prior art stuffing box packing assembly is used, then the structure is simple, but there is insufficient space for material expansion causing destruction of packing pieces
Solution Approach 1:
Dividing the packing into five separate rings creates four expansion spaces between them, allowing each ring to expand independently without compromising the overall structural integrity. This segmentation provides the necessary adaptability for material expansion while maintaining stable composition
Solution Approach 2:
The five rings are nested sequentially within the stuffing box, with each ring fitting within the previous one. This nesting arrangement provides expansion spaces between rings while maintaining a compact, stable structure that preserves structural integrity during operation
3Reliability
If prior art packing structure is used, then manufacturing is simple, but the packing cannot maintain tight seal under prolonged pressure
Solution Approach 1:
The five-ring segmented structure distributes sealing responsibility across multiple components, with each ring contributing to the overall seal. This segmentation maintains reliable sealing performance under prolonged pressure while the modular design keeps manufacturing relatively simple
Solution Approach 2:
The five rings work together as an integrated sealing system, combining their individual sealing capabilities to achieve superior and more reliable sealing performance. The cumulative effect of multiple rings maintains tight seal under pressure better than a single packing piece
Data Source
AI summary
A flexible stuffing box packing assembly has fifth rings which are placed within a stuffing box. The pressures are transferred along the sequence of the first, second, third, fourth and fifth rings. The gaps between the first and second rings and between the fourth and fifth rings provide a space for expansion of the rings. The V shape recesses in various rings provide margins for the materials of the rings to expansion. Therefore, the structure provides that all rings can expand effectively without destroying the seal structure and the stresses from various rings will disperse effectively so that lifetime of the rings are prolong.