Underground screw pump and construction method for penetrating underground screw pump

The invention discloses an underground screw pump and a construction method for penetrating the underground screw pump. The underground screw pump comprises a positioning pin, the positioning pin is connected to the lower end of a stator, and a center hole allowing a construction instrument or a too...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WU YUNGANG, LI JIMEI, AN TAO, BI YOUJUN, ZHANG TAIBIN, ZHANG HONG, LIU YANHUI, YANG YUSHENG, MA QINGLI, JIANG HONGMEI, WANG MEI, HAN TONGFANG, WANG HONGYI, SUN JINGGUANG, LU YUNXIAO, HUANG JIANSHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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