Automatic strong-spray-preventing device for high protruding coal seam
The utility model discloses an automatic strong-spray-preventing device for a high protruding coal seam. The device comprises a shell and a drill stem, wherein the rear side, the front side and the lower side of the shell are connected with a rear pipe, a front pipe and a second cinder discharging p...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses an automatic strong-spray-preventing device for a high protruding coal seam. The device comprises a shell and a drill stem, wherein the rear side, the front side and the lower side of the shell are connected with a rear pipe, a front pipe and a second cinder discharging pipe respectively, the second cinder discharging pipe is connected with a main cinder discharging pipe, the shell is further connected with a second exhaust pipe which is connected with an extracting pipe, a connecting pipe is connected between the second exhaust pipe and the main cinder discharging pipe, a first exhaust pipe is connected between the front pipe and the second exhaust pipe, and the front pipe is connected with the main cinder discharging pipe through the first cinder discharging pipe; the drill stem sequentially penetrates through the rear pipe, the shell and the front pipe, a sealing cover is arranged between the rear pipe and the drill stem, the shell is provided with a front connector used for bei |
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