DYNAMIC PRESSURE SEAL DEVICE AND ROTARY JOINT DEVICE USING THE SAME

摘要

PURPOSE: To provide a dynamic pressure seal device applicable to a rotor rotating at high speed and capable of delivering object fluid between a rotating-side member and a fixed-side member without causing leakage for a long period, even if used for the delivery of high-pressure fluid, and also to provide a rotary joint device using the same. CONSTITUTION: The fixed-side member 1 and the rotating-side member 2 are opposed in both sides of a prescribed clearance, and lubricating fluid is led to the clearance to be formed into a dynamic pressure bearing. The fixed-side member 1 is formed with a feed hole 13 opened to the bearing clearance of the dynamic pressure bearing and feeding the object pressure fluid to the rotating-side member 2. The rotating-side member 2 is formed with a receiving hole 22 opened to the bearing clearance of the dynamic pressure clearance in opposition to the feed hole 13 and receiving the object fluid from the feed hole 13.