Manpower supercharged powder conveying device for mine

Abstract

The invention discloses a manpower supercharged powder conveying device for a mine. According to the device, the lower end of an air storage tank is connected with the upper end of a material supplying device; an air compression device is connected with the air storage tank through a check valve; the air storage tank is connected with a pneumatic vibrator; an air outlet of the pneumatic vibrator is connected with a mechanical flow meter, a pressure regulating valve and a control valve I sequentially; the control valve I is connected with a nozzle of the material supplying device through an air inlet pipe; the side face of the material supplying device is connected with a charging hole, a control valve II and a pressure gauge II; a reducing pipe is arranged on the lower part of the material supplying device; a discharging hole of the reducing pipe is connected with a discharging pipe and a control valve III sequentially; and a steel wire mesh is arranged in the middle of the material supplying device. The device stores pressure quickly, and the highest stored pressure can reach 0.5MPa; and based on a gas jet principle, a nozzle shaping parameter and a nozzle and reducing pipe relative position parameter which are determined by analog computation and rest results are reasonable and scientific, and powder is conveyed efficiently. The device is easy to operate and convenient to carry and is particularly suitable for conveying the powder of a coal mine without electricity and wind.

Description

technical field [0001] The invention relates to a powder conveying device, in particular to a manual pressurized powder conveying device in an underground gas drainage project. Background technique [0002] During the gas extraction process of underground drilling, there will be air leakage cracks in the drilling area, resulting in a decrease in the concentration of coal seam gas extraction. In order to improve the gas drainage effect and ensure the safety of the gas drainage system, researchers invented the "Secondary Sealing Method for Increasing the Gas Drainage Concentration of Coal Seam Boreholes" (ZL200810023609.5). The compressed air transports the powder to the cracks around the borehole to block the air leakage channel through the powder conveying device, so as to improve the extraction effect. However, the existing powder conveying device needs to use the high-pressure air in the compressed air system as the conveying power to convey granular powder, which has the...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing powder conveying device, which are large in size, inconvenient to move, and not suitable for underground windless places, and provide a small volume, simple operation, easy to carry, and no need for compressed air and electric power. Manpower pressurized powder conveying device for mine

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