| 摘要 |
A pump for lift of liquid from large depths has a suction branch pipe and a valve, a cylinder with piston installed over the well. Over the well a vacuum pump is installed, this is connected to upper parts of suction branch pipes, and each repeated at least twice suction branch pipe and valve, and siphon installed additionally, are placed one above another, at that the siphon of lower branch pipe is hermetically connected to the cavity under the suction valve of the upper suction branch pipe. |
