Cantilever Grate Bar Coal Gangue Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional coal and gangue separation devices using airflow face challenges in accuracy and control due to uncertain airflow confinement, leading to scattered thrust and difficulty in separating materials effectively.
Innovation Solution
A coal and gangue separation device with a rotating guide part and cantilever grate bars, where high-pressure airflow is directed at the grate bar driving mechanisms, allowing for precise directional discharge of materials into separate bins, with adjustable grate bar orientations controlled by electromagnetic valves for improved accuracy and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-pressure airflow directly acts on materials for coal and gangue separation, then separation function is achieved, but airflow confinement is uncertain causing scattered thrust and difficult strength control
Solution Approach 1:
The patent introduces cantilever grate bars as intermediary elements between the high-pressure airflow and the materials. The airflow acts on the grate bars to drive their rotation, rather than directly acting on the materials. This intermediary mechanism provides deterministic force transmission and eliminates the scattered thrust problem, achieving reliable separation with simplified control.
Solution Approach 2:
The patent replaces the direct pneumatic action on materials with a mechanical rotation system. The high-pressure airflow is converted into rotational motion of the cantilever grate bars through a driving mechanism, and this mechanical rotation is then used to control material discharge. This substitution provides precise control over material flow direction and timing.
2Measurement precision
If discharge directions of cantilever grate bars are adjusted by controlling rotation, then separation accuracy is improved, but control complexity increases
Solution Approach 1:
The patent employs electromagnetic valves that can dynamically adjust the opening degree to control the discharge direction of cantilever grate bars. By varying the valve opening from fully closed to fully open, the system can precisely control the timing and direction of material discharge without complex mechanical adjustment mechanisms.
Solution Approach 2:
The patent controls the discharge direction by changing the opening parameter of electromagnetic valves rather than adjusting mechanical rotation angles. This parameter change approach simplifies the control system, as electromagnetic valves can be precisely controlled through electrical signals to achieve accurate timing and direction control of material discharge.
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
The solution enables accurate separation of coal and gangue, reducing control difficulties and increasing precision, while maintaining constant pressure and compact bin structures to optimize floor space.
Implementation Method 1
the high-pressure airflow of the high-pressure nozzle does not directly act on the materials, but on the grate bar driving mechanisms; and the cantilever grate bars are driven to rotate by the grate bar driving mechanisms
Data Source
AI summary
The present invention proposes a coal and gangue separation device, including a first supporting seat, a guide part and multiple material bins. The guide part is hinged with the first supporting seat; the guide part rotates in a vertical direction; and inlets of the plurality of material bins are sequentially distributed on a rotation track of a movable end of the guide part. In the coal and gangue separation device of the present invention, the high-pressure airflow of a high-pressure nozzle does not directly act on the materials, but on grate bar driving mechanisms; and cantilever grate bars are driven to rotate by the grate bar driving mechanisms so as to directionally discharge the mineral aggregate. Therefore, the gangue can accurately enter a gangue collection bin; and the clean coal can accurately enter a clean coal collection bin.