Thread Sealing System for Rock Crusher Force Transmission
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Solution Overview
Problem
Conventional sealing systems for rock crushers are bulky, expensive, and increase the height and weight of the crusher due to extended support bowls and upper frames, with crushing forces being cantilevered around the sealing surface, which is inefficient and costly.
Innovation Solution
A thread sealing system with a scraper seal that fits into a low-profile upper frame and support bowl, allowing direct transmission of crushing forces and reducing the size and cost of the seal by eliminating the need for an extended support bowl and upper frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional circular seals are used to prevent dirt and dust from entering the threaded areas, then sealing effectiveness is improved, but the support bowl and upper frame must be extended which increases height, weight and expense
Solution Approach 1:
The seal is divided into multiple sealing lips (first sealing lip, second sealing lip, third sealing lip) that contact different surfaces. This segmentation allows the seal to function effectively without requiring an extended support bowl, as each lip handles sealing at a specific location along the threaded section.
Solution Approach 2:
The seal contacts multiple surfaces at different dimensional locations (bowl threaded section, adjustable ring, and frame threaded section) rather than requiring a single extended surface. This multi-dimensional sealing approach eliminates the need for vertical extension of the support bowl while maintaining sealing effectiveness.
2Reliability
If conventional circular seals are used with extended support bowl, then sealing is achieved, but the upper frame must be extended which increases height and expense
Solution Approach 1:
The sealing function is segmented across multiple components and surfaces (bowl threaded section, adjustable ring, frame threaded section) rather than requiring a single extended frame structure. This allows sealing to be achieved within the existing frame height.
Solution Approach 2:
The seal performs multiple sealing functions simultaneously at different locations (sealing between bowl and adjustable ring, and between adjustable ring and frame) without requiring the frame to be extended, making the sealing system more versatile and space-efficient.
3Reliability
If conventional seals are used with extended support bowl, then sealing surface is provided, but crushing forces are cantilevered around the sealing surface which is inefficient
Solution Approach 1:
The sealing function is extracted from the structural components (support bowl and frame) and placed in a dedicated seal component. This allows the support bowl to maintain its original, shorter structure while crushing forces are transmitted directly through the threaded connection without being cantilevered around a sealing surface.
Solution Approach 2:
The adjustable ring acts as an intermediary component that the seal contacts during threading operations. This intermediary allows the seal to access the threaded areas for sealing without requiring the support bowl or frame to be extended, enabling direct force transmission while maintaining sealing functionality.
4Reliability
If conventional seals are used, then sealing is achieved, but the seal size and cost are large and expensive
Solution Approach 1:
The seal is segmented into multiple smaller sealing lips that contact different surfaces, rather than requiring a single large seal. This segmentation reduces the overall size and material quantity of the seal while maintaining effective sealing across all interfaces.
Solution Approach 2:
Each sealing lip is designed with specific properties optimized for its particular sealing surface (bowl threaded section, adjustable ring, or frame threaded section). This local optimization allows smaller, more efficient sealing surfaces rather than requiring a uniformly large seal, reducing overall seal size and cost.
Data Source
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AI summary
A sealing system adapted for use on an item of equipment having a male threaded component including a male threaded section having an interior portion. The sealing system comprises a female threaded component having a female threaded section and a scraper seal groove. The sealing system also comprises a scraper seal that is configured to be disposed in the scraper seal groove of the female threaded component and fit into the male threaded section of the male threaded component. The forces produced by the item of equipment pass directly to the female threaded component from the male threaded section. A method for sealing an interior portion of a threaded section of the male threaded component comprising providing such a sealing system and screwing the male threaded component, into the female threaded component.