Underground coal mine dust collecting device

Abstract

The invention provides an underground coal mine dust collecting device and belongs to the dust collecting device. One end of a pressure wind inlet of the dust collecting device is provided with a wind inlet, and the other end of the pressure wind inlet is provided with a first inner nozzle. The wind pressure inlet is inserted into a one-level ejector which is provided with a first dust suction inlet. The first dust suction inlet is located on a position of a first receiving room. The one-level ejector is provided with the first receiving room. A first mixing room is arranged at the front end of the first receiving room. A second inner nozzle is arranged on the end portion of the first mixing room. The end of the first mixing room is inserted into a two-level ejector provided with a second dust suction inlet, a water inlet, a dedusting agent inlet and a nozzle. The two-level ejector is provided with a second receiving room. A second mixing room is arranged at the front end of the second receiving room. The second dust suction inlet is arranged on the position of the second receiving room. The water inlet and the dedusting agent inlet are arranged on the position of the second mixing room. The nozzle is arranged at the front end of the second mixing room. The underground coal mine dust collecting device is simple in structure and high in dedusting efficiency, reduces water consumption of coal mine dust collection, eliminates a high-pressure water pump, and reduces cost.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a coal mine underground dust removal device. Background technique [0002] The hazard of coal dust is one of the five natural disasters in coal mines. Dust has caused great harm to coal mine workers and safety production. On the one hand, the dust-polluted working environment seriously endangers the health of workers and can cause lung disease and pneumoconiosis. According to the latest data, there are as many as 1.2 million patients with severe pneumoconiosis in my country, accounting for more than half of the patients with pneumoconiosis in the world, and the direct loss caused by it exceeds 8 billion yuan each year; Coal miners have the highest proportion of pneumoconiosis. On the other hand, the high dust concentration poses the danger of explosion, and the suspended coal dust is also one of the main causes of coal dust explosion in coal mines. Therefore, the elimination of coal min...

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Problems solved by technology

[0003] At present, the equipment used for dust reduction is generally a high-pressure spray dust reduction device, which relies on high water pressure to generate water mist. Although the device can achieve a certain dust reduction effect, its working pressure is very high, usually above 4MPa, and it needs to be equipped with a special atomizer. pumps, and special high-pressure pipelines and high-pressure pumps need to be laid, which consumes a lot of water, takes up a lot of equipment, and costs high

Excessive water consumption can easily damage coal quality

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