Reconfigurable Pulverizer Rotor Assemblies for Output Flow Control
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Solution Overview
Problem
Existing pulverizers face issues with controlling the output flow of size-reduced material, including dead zones where material accumulates and the need to adjust flowrate based on material type or downstream processing configurations.
Innovation Solution
A pulverizer design with reconfigurable rotor assemblies and discharge components that allow adjustment of output flow parameters, such as flowrate and shape, through movable rotor arms and interchangeable apex plates to optimize discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pulverizer uses a fixed rotor assembly configuration, then the structure is simple and easy to manufacture, but the output flow parameters (flowrate and shape) cannot be adjusted for different materials or downstream requirements
Solution Approach 1:
The rotor arms are made movable relative to the rotor hub, allowing the outer diameter of the rotor assembly to be adjusted dynamically. This enables the pulverizer to adapt output flow parameters for different materials and downstream requirements while maintaining a relatively simple overall structure.
Solution Approach 2:
The rotor assembly is segmented into a rotor hub and multiple independently adjustable rotor arms. This segmentation allows individual arms to be repositioned to change the rotor assembly's outer diameter, providing adaptability without requiring complete redesign of the entire rotor system.
2Adaptability or versatility
If the pulverizer has fixed discharge configuration, then the housing structure is simple, but dead zones are created where material accumulates instead of being properly discharged
Solution Approach 1:
The discharge configuration incorporates movable elements that can be adjusted to change the shape and direction of the output flow. This dynamic adjustment capability allows the system to eliminate dead zones and optimize material discharge for different operating conditions.
Solution Approach 2:
The discharge configuration is designed with locally adjustable features that can be modified to optimize flow patterns in specific areas. This allows targeted elimination of dead zones without requiring complete redesign of the entire discharge system.
3Productivity
If the rotor arms are made movable to adjust outer diameter, then the output flowrate can be controlled, but the mechanism for moving and positioning rotor arms increases structural complexity
Solution Approach 1:
The rotor arms are designed with movable connections to the rotor hub, enabling adjustment of the rotor assembly's outer diameter. This dynamic configuration allows control over output flowrate by varying the effective radius of the rotating elements.
Solution Approach 2:
The rotor assembly is divided into a central hub and separate rotor arms that can be independently positioned. This segmentation simplifies the adjustment mechanism, as each arm can be moved to a desired position without affecting the structural integrity of the entire rotor system.
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
Enhances control over output flow, preventing material accumulation and enabling tailored discharge according to material type and downstream requirements.
Implementation Method 1
The pulverized material is usually expelled through the outlet by an output flow created by the rotation of the shaft and rotor assemblies
Data Source
AI summary
A pulverizer comprising: a housing having top and bottom ends, an inlet located towards the top end for receiving input material to pulverize and an outlet located towards the bottom end for discharging pulverized material from the housing, the housing including a housing sidewall defining an interior chamber and having a central housing axis: a rotatable shaft extending along the central housing axis: a plurality of rotor hub assemblies mounted to the shaft, each rotor hub assembly including a rotor hub and a plurality of rotor arms extending outwardly from the rotor for forming an airflow revolving about the central housing axis within the interior chamber, wherein at least one of the housing and of one or more of the rotor hub assemblies is selectively reconfigurable between a plurality of configurations to adjust at least one parameter of an output flow of the pulverized material at the outlet.