Patent ID: 9512591
Filing Date: 2016-12-06
CPC Classification: B08B,E02D,E21B

Claim Text:
1. Cleaning device for cleaning a bottom of a borehole in the ground, with a pumping part, through which sedimented ground material in a region of the bottom of the borehole being sucked away via a suction opening and discharged from the borehole via a suction line, wherein at least one flushing nozzle is provided, the at least one flushing nozzle being configured to produce a flushing jet including liquid, which exits the cleaning device and flushes sedimented ground material from the bottom of the borehole, wherein a spacer ring is provided which surrounds a rotor or at least one rolling body, the spacer ring being drum-shaped and upwardly and downwardly open wherein the at least one flushing nozzle is directly exposed to the bottom of the borehole, wherein the pumping part is configured to suck the sedimented ground material together with the liquid in the borehole, wherein a branch line is configured to remove a portion of the liquid to the at least one flushing nozzle to form the flushing jet.