A cutting internal spraying device of a continuous coal miner

Abstract

The invention belongs to the technical field of continuous miners and particularly relates to a cutting internal spraying device of a continuous miner. The continuous miner comprises a cutting reducerand a cutting roller. The cutting internal spraying device comprises a sector-shaped liquid plate, a water distribution device and a plurality of spraying nozzles, wherein the sector-shaped liquid plate is used for achieving sector-shaped water distribution, the water distribution device is arranged on the cutting roller and connected with the liquid plate, and the spraying nozzles are arranged on the cutting roller. A shell is arranged outside the cutting reducer, the cutting roller can rotate relative to the sector-shaped liquid plate, and channels for connecting the water distribution device and the nozzles are arranged in the cutting roller. Cooling spraying water is introduced through the shell and distributed through the sector-shaped liquid plate, enters the channels inside the cutting roller through the water distribution device, flow to the corresponding nozzles and is sprayed out through the nozzles. The device is convenient to mount, reliable in sealing, long in service life, capable of effectively inhibiting mining face dust, and capable of cooling cutting teeth, reducing cutting tooth consumption and avoiding sparks generated by cutting.

Description

technical field [0001] The invention belongs to the technical field of continuous coal mining machine formation, and relates to a cutting internal spraying device of a continuous coal mining machine. Background technique [0002] Continuous miners are widely used in coal mine underground roadway excavation and corner coal, "three under" coal, irregular blocks and coal resource mining that are not suitable for fully mechanized mining face mining, while the cutting internal spray device refers to continuous mining During the working process of the coal machine, the cooling water is atomized and sprayed from the nozzles arranged on the rotating cutting drum through the internal flow channel of the cutting part, and sprayed directly around the pick, which has the functions of suppressing dust, cooling the pick and reducing the pick. Consumption and avoid cutting sparks and other effects. However, due to reasons such as basic theory, technical foundation and reliability, none of...

AI Technical Summary

Problems solved by technology

However, due to reasons such as basic theory, technical basis and reliability, none of the domestically imported and domestically produced continuous miners are equipped with an internal spray system.

[0003] For this reason, many domestic coal machine manufacturers have carried out the research and development of the internal spray of longitudinal axis roadheaders and fully mechanized coal mining machines, but the use effect is poor, which is manifested in the following aspects: (1) due to the existing roadheader The inner spray water channel passes through the inside of the reducer. Once the seal fails, it will easily cause the gear oil inside the reducer to emulsify, and then cause a major failure of the reducer; (2) The life of the water seal is short and maintenance is difficult. The existing inner spray water seal is directly connected to the water shaft Positive pressure contact, large running resistance, fast wear and consumption, and the average service life is less than 3 months; (3) Since the water seal is arranged inside the reducer, it is necessary to disassemble the roller and open the reducer box for replacement, which is extremely inconvenient for maintenance; (4) Cutting coal rocks and circulating coal in the cylinder during use can easily cause nozzle clogging, and nozzle replacement is difficult

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