Coal gangue identification system and method based on heat detection

Abstract

The invention discloses a coal gangue identification system and method based on heat detection. The method comprises the steps that a coal-rock mixture is discharged to a scraper conveyor located below through n-2 coal discharging openings of N sets of top coal caving hydraulic supports arranged side by side in the same direction, and the coal-rock mixture is transported and sequentially passes through the coal discharging openings of all the top coal caving hydraulic supports; a chemical reagent is sprayed to the coal-rock mixture on the scraper conveyor at the current position through achemical spraying device; and a heat signal generated after the coal-rock mixture reacts with the chemical reagent is detected through an infrared heat detection device, and then is converted into anelectric signal and sent to a controller, the controller controls the corresponding coal discharging opening, the chemical spraying device and the infrared heat detection device to be opened and closed according to the electric signal, and cyclic coal discharging and detection are achieved. According to the coal gangue identification system and method based on heat detection, the coal-rock mixtureis distinguished through a chemical reaction, the identification speed is high, and the accuracy rate is high.

Description

Technical field [0001] The present invention relates to the field of coal governing identification, and more particularly to a coal mean identification system and method based on heat detection. Background technique [0002] my country's thick coal seam reserves, comprehensive mining technology is one of the main means of mining such coal seams. Currently, comprehensive development is still generally employed by artificial discharge, and the intelligentization of coal is the main technical bottleneck of intelligent fully exploiting. Since there is a low illumination, electromagnetic / vibration signal interference, the smart discharge is long-term exploration, but it has not yet achieved key breakthroughs so far at home and abroad. At present, existing smart discharge coal technology is low, and the recognition accuracy is not high. Either it is difficult to reduce the cost of raw material due to the bad engineering environment in the downhole. For the implementation of intellige...

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Problems solved by technology

[0003] For top coal caving intelligent gangue identification technology, traditional techniques mostly use physical methods (such as vibration, image, etc.) to distinguish between coal and gangue based on their physical properties. The physical properties are generally relatively close; and affected by factors such as low lighting, large dust, and a lot of electromagnetic / vibration signal interference in the mine, traditional physical methods have low recognition accuracy and are prone to misjudgments during the recognition process. In addition, some methods are costly Most of them are not easy to implement underground, so it is necessary to provide a system and method that can accurately identify coal gangue

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