Rotary Coal Identification Device Using Water Injection and Weighing
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Solution Overview
Problem
Current coal and gangue separation devices rely on radiation-based methods, which pose radiation pollution risks and are limited by underground space constraints, making them inefficient and difficult to operate underground.
Innovation Solution
A coal and gangue identification device and system that uses a rotary supporting frame with water injection, weighing, and liquid level detection to identify mineral aggregates based on volume and weight ratios, allowing for safe, radiation-free sorting without the need for transporting coal to the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiation-based photoelectric sorting devices are used for coal and gangue identification, then identification capability is achieved, but radiation pollution risk and equipment complexity increase
Solution Approach 1:
The patent replaces the radiation-based photoelectric sorting device with a mechanical weighing system. Instead of using gamma rays or X-rays to identify coal and gangue, the invention uses a rotary supporting frame with weighing units that mechanically measure the weight of mineral aggregates. This substitution eliminates radiation pollution while maintaining identification capability through weight-based differentiation between coal and gangue.
Solution Approach 2:
The patent introduces water as an intermediary substance to facilitate the identification process. Water is injected into the loading unit to enable volume measurement through liquid level detection, and the combination of weight and volume measurements provides additional parameters for accurate coal and gangue differentiation. The water serves as a mediator that enables non-radiation-based identification.
2Ease of operation
If radiation-based sorting devices are deployed underground, then coal and gangue separation can be performed in situ, but equipment design and installation are restrained by limited underground space
Solution Approach 1:
The patent divides the identification device into modular components arranged on a rotary supporting frame. The loading unit, water injection unit, weighing unit, and liquid level detection device are segmented into distinct functional modules that can be independently designed and installed. This segmentation allows the system to be adapted to limited underground spaces while maintaining full identification capability.
Solution Approach 2:
The patent employs a rotary supporting frame that dynamically positions different functional modules at different locations during rotation. The loading unit rotates through water injection region, material adding region, volume measurement region, and unloading region sequentially. This dynamic arrangement allows the system to perform multiple functions within a compact footprint, making it suitable for underground environments with space constraints.
3Measurement precision
If coal is transported to the surface for processing, then identification can be performed with established equipment, but operational costs and time increase
Solution Approach 1:
The patent enables the identification device to perform coal and gangue separation directly at the underground mining site without requiring external transport to surface facilities. The self-contained system with rotary supporting frame, water injection unit, weighing unit, and liquid level detection device can operate autonomously underground, eliminating transport time and reducing operational costs while maintaining identification accuracy.
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 accurate underground coal and gangue sorting, reducing costs and complexity by eliminating radiation risks and space constraints, while improving operational safety and efficiency.
Implementation Method 1
the liquid level detection device is used to measure a liquid level in the loading unit on the volume measurement region; the processing module is used to calculate, according to a measurement result of the liquid level detection device, a volume of the mineral aggregate filled to the loading unit
Implementation Method 2
the weighing unit is used to acquire the weight of the mineral aggregate filled to the loading unit in the material adding region
Implementation Method 3
the water injection unit is used to inject water to the loading unit of the water injection region
Data Source
AI summary
A coal and gangue identification device is disclosed. The device includes a rotary supporting frame, a water injection unit, a weighing unit, a liquid level detection device and a processing module. The rotary supporting frame is provided with a loading unit used to load a mineral aggregate. The rotary supporting frame is used to drive the loading unit to rotate on a horizontal plane. In the rotating process of the rotary supporting frame, the loading unit cyclically passes through a water injection region, a material adding region, a volume measurement region and an unloading region which are sequentially disposed on a rotation trajectory of the rotary supporting frame. The water injection unit is used to inject water to the loading unit of the water injection region.