DRAIN FOR DYNAMIC SEALING ASSEMBLY

摘要

The present invention relates to a system comprising: a shaft having a distal end and a proximal end; a casing defining a housing in which a hydraulic device is rotatably mounted on the shaft; and a sealing element comprising a low pressure dynamic sealing means and a reinforced dynamic sealing means formed by a static seal tightly mounted on a friction pad, such as to isolate the dynamic sealing means from the rotating hydraulic device, said sealing element defining a discharge chamber between the dynamic sealing means and the reinforced dynamic sealing means, which discharge chamber is connected to a drain via a pipe arranged on the surface of the shaft, between the hydraulic device and the shaft, so as to discharge the fluid located in the discharge chamber, such that said discharge chamber is not subjected to the pressure in the casing of the hydraulic device.

主权项

1. A system comprising:
a shaft (1) presenting a distal end (11) and a proximal end, a casing (C) defining a housing in which a hydraulic device (M, F) is rotatably mounted on the shaft (1), a sealing member comprising low-pressure dynamic sealing means (4) and reinforced dynamic sealing means (5) formed from a static sealing gasket (51) tightly mounted on a friction pad (51) so as to isolate said dynamic sealing means (4) from the rotating hydraulic device (M, F), and defining a discharge chamber between the dynamic sealing means (4) and the reinforced dynamic sealing means (5), characterized in that the discharge chamber is connected to a drain (18, 91) via a pipe (16) arranged on the surface of the shaft (1) between the hydraulic device (M, F) and the shaft so as to discharge fluid located in the discharge chamber such that said discharge chamber is not subjected to the pressure prevailing in the casing (C) of the hydraulic device (M, F).