Crusher Dust Seal Ring Assembly for Tight-Tolerance Installation
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Solution Overview
Problem
The installation of dust seal rings in crushers is cumbersome due to tight tolerances, which can lead to damage and allow dust particles to enter the mechanical components, increasing maintenance and operational costs.
Innovation Solution
A dust sealing system comprising multiple sealing members that can move from a non-operating to an operating position, forming a dust seal ring with a specific tolerance, using an actuating mechanism such as an inflatable tube or fastening members to secure the seal ring in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dust seal ring is installed with tight tolerance (0.5 mm to 2.2 mm) to prevent dust entry, then sealing effectiveness is improved, but installation difficulty increases and risk of damage to the dust seal ring increases
Solution Approach 1:
The dust seal ring is divided into multiple individual sealing members that can be installed separately in a loose configuration and then assembled together after the main shaft is in place, eliminating the difficulty of maneuvering a complete pre-assembled seal ring through tight tolerances
Solution Approach 2:
The sealing members are pre-positioned in a loose, non-operating configuration within the annular groove before main shaft installation, allowing easy placement without requiring precise alignment or complex maneuvering through tight clearances
2Ease of operation
If multiple sealing members are used to form the dust seal ring, then installation ease is improved, but device complexity increases
Solution Approach 1:
Multiple individual sealing members are designed to engage with each other through complementary engaging faces and step portions, merging into a unified dust seal ring configuration that provides the same sealing function as a traditional single-piece seal ring but with easier installation
3Productivity
If the head center is lowered around the dust collar during installation, then main shaft installation is achieved, but risk of damaging the dust seal ring increases
Solution Approach 1:
The sealing members are positioned in a loose, non-operating configuration with increased clearance from the dust collar before main shaft installation, providing a buffer zone that prevents contact and potential damage during the lowering and installation process
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 system allows for easy and damage-free installation of the main shaft in the crusher, maintaining the integrity of the dust seal ring and preventing dust entry, thus reducing maintenance costs and ensuring the reliability and durability of the crusher.
Implementation Method 1
The actuating mechanism includes an inflatable tube. The inflatable tube is configured to move the plurality of sealing members to the operating position
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A dust sealing system (210) for a crusher (100) is provided. The dust sealing system (210) includes a plurality of sealing members (220) at least partly received within an annular groove (222) defined in a head center (150) of the crusher (100). The dust sealing system (210) further includes an actuating mechanism (600) for moving the plurality of sealing members (220) from a non-operating position to an operating position. The plurality of sealing members (220) together forms a dust seal ring (300) in the operating position and abuts a dust collar (202) of the crusher (100). A tolerance (C1) defined between the plurality of sealing members (220) and the dust collar (202) at the non-operating position is greater than a target tolerance (C2) defined between the plurality of sealing members (220) and the dust collar (202) at the operating position.