Gas extraction device at upper corner of coal face of coal mine
A technology for coal mining face and gas extraction, which is applied in the directions of gas discharge, safety devices, mining equipment, etc., can solve the problems of reducing the work efficiency of gas extraction operations, and achieves avoiding the reduction of gas extraction efficiency, improving work efficiency, and improving Using the effect of the effect
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.
[0026] Such as Figure 1 to Figure 4 As shown, the gas extraction device at the upper corner of the coal mining working face in the coal mine in this embodiment includes an air extraction pipeline 1 and an air supply pipeline 3, and the air extraction pipeline 1 and the air supply pipeline 3 are fixedly connected by a fixed connection frame 8; One end of the gas pipeline 1 communicates w...
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