Slag Remover Drive Lever Arrangement for Incineration Plants
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Solution Overview
Problem
Conventional slag removers for incineration plants face issues with twisting moments and suboptimal power transmission, leading to inefficient operation and increased mechanical stress, particularly when dealing with inhomogeneously distributed combustion residues.
Innovation Solution
The slag remover design features a shaft with a drive lever arranged between two output levers, eliminating twisting moments by bypassing shaft bearings and allowing for optimal power transmission, with a single cylinder-piston unit and symmetrical drive lever arrangement, enabling simpler operation and higher mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the drive lever is arranged on the ends of the shaft protruding beyond the side walls, then the power flow passes through the shaft bearings, but this causes large moments of force on the bearings and suboptimal power transmission
Solution Approach 1:
The drive lever is inverted from the conventional arrangement on the ends of the shaft to a central arrangement on the shaft between the output levers. This inversion changes the power flow path to bypass the shaft bearings, eliminating large moments of force on the bearings and optimizing power transmission efficiency.
2Strength
If the shaft is dimensioned to handle large twisting moments, then the shaft can withstand inhomogeneously distributed combustion residues, but this increases the shaft dimensions and weight
Solution Approach 1:
The invention converts the harmful twisting moments that previously required oversized shafts into beneficial direct force transmission. By arranging the drive lever centrally to bypass bearings, the harmful rotational moments are eliminated and replaced with efficient direct force transmission, allowing slimmer shaft dimensions while maintaining strength.
3Adaptability or versatility
If wedge tracks are provided for removable lever attachment, then the levers can be removed and reattached, but this weakens the shaft or lever and impairs mechanical stability
Solution Approach 1:
The lever attachment system is segmented into modular components that can be removed and reattached without compromising overall stability. The drive lever and output levers are designed as separate attachable components with optimized connection points that maintain mechanical integrity while enabling maintenance and replacement.
4Adaptability or versatility
If multiple cylinder-piston units are used to handle inhomogeneously distributed combustion residues, then the system can accommodate varying slag distribution, but this increases device complexity and operational monitoring requirements
Solution Approach 1:
The single cylinder-piston unit is designed with multi-functionality to handle both symmetric and inhomogeneous slag distributions. The central drive lever arrangement and articulated output levers enable the single actuator to effectively push slag regardless of its distribution pattern, eliminating the need for multiple specialized actuators.
Data Source
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AI summary
The remover has trough (6) to collect combustion residues evacuated from combustion chamber of incineration plant. The push rams pushes the combustion residues out of trough. A shaft (38) is rotatably mounted in two shaft bearings (36a,36b), on which drive lever cooperating with cylinder-piston unit (48) and two output levers (40a,40b) connected to push rams are arranged in rotationally secure manner. The cylinder-piston unit is arranged such that push rams move back and forth between retracted position and extended position, while drive lever is arranged between the two output levers.