| 摘要 |
The invention relates to a borehole pumping device for pumping a medium (9) out of a borehole (8), comprising a drive (2); a pump (3); a shaft (4) which connects the drive (2) to the pump (3); a sliding ring sealing unit (5) comprising a sliding ring seal (50) with a rotating sliding ring (51) and with a stationary sliding ring (52), said sliding ring seal (50) sealing against the shaft (4); and an autonomous supply device (6) which supplies a blocking medium to the sliding ring seal (50); wherein the autonomous supply device (6), the drive (2), the pump (3), the shaft (4), and the sliding ring sealing unit (5) form a compact pumping unit which can be completely lowered into the borehole. |
