Automatic liquid injecting and draining device

• Main Authors: SHEN JIANHONG, XIAO WEIYUAN, TIAN YU, SHEN YANFEI, LYU CHAO, WANG KAI'EN, LIU BAOHUA
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2017
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BYUSING INERTIA OF FLUID TO BE PUMPED; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SIPHONS; WEAPONS

The invention discloses an automatic liquid injecting and draining device. The automatic liquid injecting and draining device comprises a high-position liquid storage tank and a low-position liquid storage tank, wherein the high-position liquid storage tank communicates with the low-position liquid storage tank through a liquid inlet and outlet pipeline; the upper end of the liquid inlet and outlet pipeline is connected with the bottom of the high-position liquid storage tank; the lower end of the liquid inlet and outlet pipeline is inserted into the low-position liquid storage tank and extends to the position, close to the bottom in the low-position liquid storage tank; a cavity above a liquid surface in the low-position liquid storage tank is connected with a high-pressure gas source and a vacuum valve through a gas inlet and outlet pipeline; and in a liquid injecting and draining process, a lower end opening of the liquid inlet and outlet pipeline is always located below the liquid surface in the low-posit