Patent ID: 8800888

Claim:
A driving device for lifting buried spraying head comprising a case ( 2 ), a filter ( 3 ) provided in the lower end of the case ( 2 ), and a spraying head driving unit which is disposed inside the case ( 2 ), connected with a spraying head positioned on the top of the case ( 2 ) via a main shaft, and drives the spraying head to rotate and spray water, characterized in that the spraying head driving unit comprises a tangential flow generator ( 4 ) and a hydraulic rotator ( 5 ), wherein the tangential flow generator ( 4 ) is a small case structure which is hollow, a water supply gap is formed between the tangential flow generator and the inner wall of the case ( 2 ), inflow openings ( 44 ) are arranged on the shell wall of the tangential flow generator ( 4 ), the hydraulic rotator ( 5 ) is disposed inside the tangential flow generator ( 4 ), the hydraulic rotator ( 5 ) has stress surfaces ( 55 ) corresponding to the inflow openings ( 44 ), and the hydraulic rotator ( 5 ) connects with the spraying head directly or indirectly via the main shaft.