Seal Cartridge Pin Locking Assembly for Precise Sealing Alignment
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Solution Overview
Problem
Existing seal cartridges for rotating assemblies are complex and require specific knowledge for assembly and disassembly, leading to potential inefficiencies and failures due to misalignment or damage during installation.
Innovation Solution
A pin locking device is introduced to couple and secure sealing components of a seal cartridge, allowing for easier assembly and disassembly without screws, using a pin body with a spring mechanism and an extraction tool to facilitate alignment and locking of ring-shaped components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional screw and bolt coupling is used to assemble sealing components, then the structural strength and reliability are improved, but the assembly and disassembly complexity increases and requires specific knowledge and skills
Solution Approach 1:
The patent replaces the traditional screw and bolt mechanical coupling system with a pin locking device that uses a simple insertion and locking mechanism. The pin locking device comprises a pin that is inserted through aligned holes in the sealing components and locked in place, eliminating the need for threaded fasteners and reducing assembly complexity while maintaining structural integrity.
Solution Approach 2:
The sealing components are designed with separate modular sections that can be easily aligned and connected using the pin locking device. The housing components and shaft sleeve are segmented into discrete parts that fit together through precision-machined interfaces, allowing for simple assembly and disassembly without requiring complex fastening procedures.
2Manufacturing precision
If precision alignment is achieved during assembly, then the sealing efficiency is improved, but the assembly time and skill requirement increase
Solution Approach 1:
The sealing components are pre-designed with precisely positioned alignment features, including locating surfaces and guide holes, that automatically ensure correct alignment during assembly. The pin locking device itself incorporates alignment guidance, allowing the pin to be inserted along a predetermined path that naturally aligns the housing components and shaft sleeve without requiring manual adjustment or specialized assembly skills.
3Volume of moving object
If a compact cartridge design is implemented, then the space efficiency is improved, but the assembly and disassembly difficulty increases
Solution Approach 1:
The compact seal cartridge is designed as a segmented modular assembly where housing components and shaft sleeves are connected through the pin locking device. This segmentation allows the compact structure to be easily separated into discrete parts for maintenance and reassembly, combining the benefits of compactness with operational simplicity.
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 pin locking device simplifies the assembly and disassembly process, reducing complexity and enhancing the reliability of the cartridge by preventing misalignment and damage, resulting in a more compact and efficient sealing mechanism.
Implementation Method 1
a spring (32) arranged within said pin cavity (100A) and configured for pushing said pin body (31) in said locked position
Data Source
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AI summary
The present invention proposes a pin locking device (3) for assembling a first sealing component (10A) with a second sealing component (10B) of a seal cartridge (1) and a method for assembling such a seal cartridge comprising said first sealing component (10A) and said second sealing component (10B), the pin locking device (3) comprising: - a pin body (31) comprising a longitudinal bore (310) extending along a longitudinal axis (C), wherein an inner wall (311) of said bore (310) comprises fixing means configured for cooperating with an extraction tool (4), the pin body (31) comprising two parts arranged longitudinally one after the other one along said longitudinal axis (C), namely a first part (31A) configured for fitting a pin cavity (100A) of the first sealing component (10A) and a second part (31B) configured for fitting a locking cavity (100B) of the second sealing component (10B); - a spring (32) configured for moving the pin body (31) from a withdrawn position, where the pin body (31) is entirely located within a pin cavity (100A) of the first20 sealing component (10A), towards a locked position wherein a second part (31B) of the pin body (31) is located and maintained within a locking cavity (100B) of the second sealing component (100B) while a first part (31A) remains located within said pin cavity (100A).