Adjustable Static Classifier for Variable Airflow Particle Separation
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Solution Overview
Problem
Existing static classifiers are limited to specific air flow and velocity, making them unsuitable for classifying a wide range of materials, such as natural and synthetic gypsum, due to varying moisture levels and airflow requirements.
Innovation Solution
A static classifier with adjustable flow restrictors, including sleeves and vanes, that can modify the flow velocity and direction of particles, allowing for flexible operation across different materials and airflow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a static classifier uses a fixed physical structure, then it maintains simple operation, but it cannot adapt to different materials and airflow rates
Solution Approach 1:
The patent applies the dynamics principle by making the flow restrictors adjustable rather than fixed. The flow restrictors can be positioned at different locations along the outlet duct to change the flow velocity and direction, allowing the same classifier to adapt to different materials and airflow rates. This transforms the static structure into a dynamic, adjustable system that maintains versatility without requiring multiple different classifiers.
Solution Approach 2:
The patent implements parameter changes by allowing the flow restrictors to modify key flow parameters (velocity and direction) through positional adjustment. By changing the position of the flow restrictors along the outlet duct, the system can optimize particle separation for different materials such as natural gypsum, synthetic gypsum, and other particulate materials with varying moisture levels and classification requirements.
2Adaptability or versatility
If a static classifier is designed for specific air flow, then it maintains optimal performance for that flow, but it cannot handle varying airflow rates
Solution Approach 1:
The adjustable flow restrictors enable the classifier to dynamically adapt to varying airflow rates while maintaining optimal classification efficiency. The flow restrictors can be repositioned to compensate for changes in airflow, ensuring that the particle separation performance remains reliable across different operating conditions and material types.
Solution Approach 2:
The patent achieves universality by designing a single classifier that can handle multiple materials and airflow rates through adjustable flow restrictors. This multi-functional design allows the same device to optimize performance for natural gypsum, synthetic gypsum, and other particulate materials without requiring multiple specialized classifiers, thereby maintaining reliability across diverse applications.
3Ease of operation
If a static classifier uses fixed openings, then it maintains simple construction, but it cannot adjust flow velocity and direction
Solution Approach 1:
The patent applies dynamics by introducing adjustable flow restrictors that can be positioned at different locations along the outlet duct. This allows operators to control flow velocity and direction by simply moving the flow restrictors to appropriate positions, providing flexible flow control without requiring complex mechanical mechanisms. The flow restrictors can be adjusted manually or automatically based on the specific material and airflow requirements.
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
Enables efficient separation of particles regardless of varying feed types and airflow rates, optimizing classification efficiency and maintaining performance under changing conditions.
Implementation Method 1
The flow restrictor is configured to establish a flow velocity of the particles entrained in the gas, through the static classifier
Implementation Method 2
The plurality of openings are configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area
Implementation Method 3
a static separator for a grinding mill system or an in-stream classification system without the mill, the static separator being configured for separating ground or pulverized particles of different sizes
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
A static classifier (100) including a vessel (10) having an inlet (10A) and an outlet (10B) and having a vessel interior area (10V). A classifier chamber (40) is positioned in the vessel interior area. The classifier chamber has a plurality of openings (42) extending through a side wall (44) of the classifier chamber and into a classifier interior area (40D) of the classifier chamber. The plurality of openings are configured for passing particles entrained in a gas from the vessel interior area into the classifier interior area. One or more flow restrictors (30, 50, 70) are arranged with the classifier chamber. The flow restrictors are configured to establish an optimal flow velocity and direction of the particles entrained in the gas, through the static classifier.