Split Cartridge Mechanical Seal for Faster Mounting and Leak Resistance
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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 due to their non-split design, which complicates the process and increases workload.
Innovation Solution
A cartridge radial double-end-face split type mechanical seal design featuring center-split components such as a shaft sleeve, gland, rotary ring, outer stationary ring, and inner stationary ring, with spliced pieces and additional sealing rings, push rings, and limiting blocks that allow for easier assembly and disassembly without requiring the seal to be fully sleeved on the main shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional non-split mechanical seal design is used, then sealing performance is maintained, but mounting and dismounting procedures become complex and time-consuming
Solution Approach 1:
The mechanical seal components (shaft sleeve, gland, rotary ring, stationary ring) are divided into split types with center-split designs, allowing each component to be assembled in half and connected together. This segmentation enables easy mounting and dismounting without requiring complete disassembly of other shaft components, directly resolving the contradiction between ease of operation and time loss.
2Productivity
If split-type design is adopted for easier assembly, then mounting efficiency improves, but structural complexity increases
Solution Approach 1:
The split-type design segments components into manageable halves that can be independently handled and assembled, improving productivity. The complexity is managed through standardized connection structures (connection bolts, sealing rings) that simplify the assembly process despite the increased number of parts.
Solution Approach 2:
Multiple functional elements (sealing rings, push rings, limiting blocks, drive pieces) are integrated into the split-type structure, combining assembly and sealing functions into unified components. This merging reduces the overall operational complexity while maintaining high mounting efficiency.
3Manufacturing precision
If traditional mechanical seal design is used, then structural simplicity is maintained, but precision mounting requirements increase
Solution Approach 1:
The center-split design allows components to be assembled in a controlled manner with alignment features (limiting blocks, positioning structures) that guide precise positioning during assembly. This reduces the skill level required while maintaining manufacturing precision through the segmented approach.
Solution Approach 2:
Connection structures such as connection bolts, sealing rings, and limiting blocks act as intermediaries that facilitate precise alignment and connection between split components. These intermediary elements ensure accurate positioning without requiring extremely high mounting precision from the operators.
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, and enhances sealing performance by increasing contact pressure between sealing surfaces under medium pressure, thereby improving resistance to medium leakage.
Implementation Method 1
a plurality of drive pieces and a plurality of elastic pieces are disposed between the gland and the outer push ring/inner push ring
Implementation Method 2
one spring is placed as an elastic piece in each spring hole, and the top of the spring is abutted against the gland
Implementation Method 3
a contact pressure between the rotary ring and the outer stationary ring/the inner stationary ring increases along with increase of a pressure of the sealed medium, thus improving a resistance of the sealed medium flowing out of a sealing surface
Data Source
AI summary
Provided is a cartridge radial double-end-face split type mechanical seal, including: a shaft sleeve, a gland, a rotary ring, an outer stationary ring, and an inner stationary ring which are all of split type structure, split pieces of the shaft sleeve are spliced and sleeved on a main shaft, a rotary ring groove is disposed at the bottom of the shaft sleeve, split pieces of the rotary ring are spliced and fixed in the rotary ring groove, split pieces of the outer stationary ring are spliced and sealingly connected with the rotary ring, split pieces of the inner stationary ring are also spliced and sealingly connected with the rotary ring, an outer push ring is disposed at the top of the outer stationary ring, an inner push ring is disposed at the top of the inner stationary ring.