Split Double-End-Face Mechanical Seal for Easier Shaft Assembly
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Solution Overview
Problem
Traditional mechanical seals require complex and precise mounting and dismounting procedures, reducing production efficiency and necessitating high skill levels, and they lack adequate sealing performance under medium pressure and anti-cavitation conditions.
Innovation Solution
A cartridge axial double-end-face split type mechanical seal design featuring center-split components such as a shaft sleeve, gland, medium rotary and stationary rings, and atmospheric rotary and stationary rings, with multiple sealing rings and push rings, allowing for easier assembly and disassembly without removing the seal from the main shaft, and enhancing sealing performance under pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mechanical seal components are designed as closed cylindrical bodies, then the seal structure is compact and simple, but the mounting and dismounting procedures are complex and time-consuming
Solution Approach 1:
The mechanical seal components (shaft sleeve, gland, rotary rings, stationary rings) are divided into split-type structures with axial splitting surfaces, allowing them to be assembled and disassembled without complete removal from the main shaft. This segmentation enables partial access and simplifies maintenance operations while maintaining overall structural integrity.
2Productivity
If traditional mechanical seal is sleeved on the main shaft before mounting other components, then the seal is protected during assembly, but the mounting procedure becomes tedious and production efficiency is reduced
Solution Approach 1:
The split-type design allows the mechanical seal to be assembled in sections around the main shaft rather than requiring complete sleeve assembly beforehand. This enables parallel assembly operations and reduces the sequential dependency that causes time loss in traditional mounting procedures.
3Manufacturing precision
If traditional mechanical seal requires high precision mounting abilities, then the seal installation is accurate, but the skill requirement increases and training costs rise
Solution Approach 1:
The axial splitting surfaces and corresponding grooves provide natural alignment features that guide the split components into correct positions during assembly. This self-alignment mechanism reduces the precision demands on operators while ensuring accurate final positioning of the seal components.
Solution Approach 2:
The connection steps and positioning structures act as intermediary elements that facilitate precise alignment between the split components and the main shaft. These intermediaries transfer and maintain positional accuracy without requiring high operator skill levels.
4Reliability
If traditional mechanical seal lacks adequate sealing performance under medium pressure, then the structure is simpler, but the sealing reliability is insufficient
Solution Approach 1:
The mechanical seal is designed with dual sealing faces (atmospheric and medium sides) that are independently sealed. This segmentation of sealing functions allows each sealing interface to be optimized for its specific pressure conditions, improving overall reliability under medium pressure while maintaining manageable structural 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
This design simplifies the mounting and dismounting process, reduces workload, improves sealing efficiency, and extends the service life and anti-cavitation capabilities of the mechanical seal, thereby increasing its application scope.
Implementation Method 1
a plurality of first drive pieces and a plurality of first elastic pieces are disposed between the first push ring and the connection step, and a plurality of second drive pieces and a plurality of second elastic pieces are disposed between the second push ring and the connection step
Data Source
AI summary
Provided is a cartridge axial double-end-face split type mechanical seal, including: a shaft sleeve, a gland, a medium rotary ring, a medium stationary ring, an atmospheric rotary ring, and an atmospheric stationary ring which are all center-split, wherein the shaft sleeve is sleeved on a main shaft, a medium rotary ring groove is disposed at the bottom of the shaft sleeve, the medium rotary ring is fixed in the medium rotary ring groove, the medium stationary ring is sealingly connected with the medium rotary ring, and a first push ring is disposed at the top of the medium stationary ring; an atmospheric rotary ring groove is disposed at the top of the shaft sleeve, the atmospheric rotary ring is fixed in the atmospheric rotary ring groove, the atmospheric stationary ring is sealingly connected with the atmospheric rotary ring.