| 摘要 |
The hydraulic system comprises a housing (10) in which there are arranged a hydraulic device (12), a shaft (14) engaged in the housing and a sealing device (16) between the shaft and the housing. The sealing device comprises first and second sealing elements (20, 22) arranged successively on the shaft, providing between them a discharge chamber (24) connected to a drain (26), the first sealing element being located between the discharge chamber and the inner space (11) of the housing. The system has, between the discharge chamber (24) and the inner space (11) of the housing, a communication pipe (28) in which a calibrated nozzle (30) is arranged. |
