Roller Screen Shaft Adjustment via Eccentric Spherical Bearings
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Solution Overview
Problem
Existing roller grate screening devices face challenges in robustly and simply adjusting gap widths due to limitations in horizontal and inclined plane adjustments, which affect screening performance, especially under varying weather conditions and material requirements.
Innovation Solution
The implementation of movable shafts with adjustable gap widths, utilizing eccentric discs to change the center of rotation, allowing movement out of the horizontal plane, and a hydraulic locking system for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shafts are adjusted in horizontal plane or inclined plane, then gap width can be changed, but adjustment robustness and simplicity deteriorate
Solution Approach 1:
The invention moves the shaft adjustment from horizontal plane movement to vertical plane movement by allowing shafts to tilt relative to the horizontal plane. This dimensional change enables gap width adjustment through a different mechanism - tilting shafts supported by spherical bearings rather than displacing shafts horizontally, thereby improving adjustment robustness and simplicity
Solution Approach 2:
The invention changes the adjustment parameter from horizontal displacement distance to tilt angle of the shafts. By using spherical bearings that allow angular movement, the system adjusts gap width through angle variation rather than linear displacement, simplifying the adjustment mechanism and improving operational robustness
2Device complexity
If traditional horizontal adjustment is used, then structure is simple, but screening performance deteriorates under varying weather conditions and material requirements
Solution Approach 1:
By enabling shafts to tilt in the vertical plane through spherical bearings, the invention adds a new degree of freedom to the adjustment mechanism. This allows the screening surface to be oriented optimally for different material types and weather conditions, significantly improving screening performance without requiring a fundamentally complex structure
Solution Approach 2:
The invention introduces dynamic adjustability by allowing shafts to change their orientation angle relative to the horizontal plane. This dynamic capability enables the screening device to adapt to varying operational conditions (different materials, weather), improving productivity while maintaining relatively simple mechanical components
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 enables robust and simple adjustment of gap widths, enhancing screening performance by allowing eccentric movement of shafts, resulting in consistent and adaptable screening across different materials and conditions.
Implementation Method 1
the shafts with an adjustable gap width are accommodated with spherical bearings in the roller grate screening device, each of which on a curved section in relation to the roller grate screening device have a movable center of rotation
Implementation Method 2
The movable shafts are mounted eccentrically in the eccentric disks, so that the respective movable center of rotation of the bearings of the movable shafts is guided on a circular arc section by means of the eccentric disks
Data Source
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AI summary
The roller screen-sieve device has multiple parallel drivable shafts placed in a frame (12). A bearing of the respective shaft has a rotation center and a gap width between movable shafts is changed in the flow direction (11) in a section (26). Bearings of the movable shafts arranged in the section have a rotation center (28) movable on a sheet section relative to the frame.