Screw Centrifuge Bearing Arrangement With Elastic Axial Load Equalization
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Solution Overview
Problem
Existing solid bowl worm centrifuge bearing arrangements with multiple axial bearings face issues with individual bearing overload and limited service life, making it difficult to evenly distribute and manage axial forces effectively.
Innovation Solution
Incorporating an elastic means to support the axial force of the worm, which compresses and redistributes the axial force between two axial bearings, ensuring equal loading and preventing overloading, while also absorbing impacts and compensating for thermal changes and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple axial bearings are used to absorb axial force, then the overall axial force absorption capacity is improved, but individual bearings may become overloaded and defective
Solution Approach 1:
A movable connection element is introduced between the second axial bearing and the worm hub, acting as an intermediary that redistributes axial forces. This element can move axially to equalize the load distribution between the two axial bearings, preventing individual bearing overload while maintaining the enhanced force absorption capacity of the dual-bearing arrangement
Solution Approach 2:
The movable connection element changes the load distribution parameter dynamically. By allowing axial movement, the system automatically adjusts the force distribution ratio between the two bearings based on their respective positions and stiffness characteristics, ensuring optimal load sharing under varying operating conditions
2Force
If axial bearings are dimensioned to handle maximum axial force, then the bearing load capacity is sufficient, but the radial overall height of the bearing arrangement increases
Solution Approach 1:
The bearing arrangement is segmented into two separate axial bearings that share the axial force load. The movable connection element divides the force transmission path, allowing each bearing to be dimensioned for a portion of the total axial force rather than the full load, thereby reducing the required radial height of each individual bearing and the overall arrangement
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 solution effectively distributes and limits the axial force on each bearing, reducing the maximum individual load by half, allowing for smaller bearing dimensions, reduced radial height, and improved maintenance intervals, particularly beneficial in large pond depth applications.
Implementation Method 1
an elastic means is provided on which the second axial bearing for supporting the axial force of the worm is supported in the axial direction
Implementation Method 2
the elastic means can also absorb impacts and vibrations of the screw in certain construction situations
Implementation Method 3
it can compensate for changes in the shape of components, such as a thermal change in length or abrasion due to wear
Data Source
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AI summary
The invention relates to a bearing arrangement of a screw of a solid bowl screw centrifuge, having a centrifuge axis, a first axial bearing and a second axial bearing, which are provided to absorb an axial force of the screw. According to the invention, an elastic means is provided, on which the second axial bearing is supported in the axial direction for supporting the axial force of the screw.