Automatic measuring device for liquid level of reverse drainage tank of coal seam drainage and production well
The utility model provides an automatic liquid level measuring device for a reverse drainage tank of a coal seam drainage well. The automatic liquid level measuring device comprises a floating ball, a fixed pulley block, a plumb bob and a liquid level ruler, the floating ball penetrates through the...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
22.08.2023
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Subjects | |
Online Access | Get full text |
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