Oil leak prevention device for a rotary machine bearing

摘要

(57) [summary] [purpose] simple, and, I to prevent oil leakage from the surely bearing with an inexpensive structure. [Configuration] rotating part and the oil leakage prevention of the rotating machine bearing labyrinth seal 14 is provided by forming a fixing portion and a passage 16 which bent during preventing oil leakage adjacent the bearing 13 which supports the rotary shaft 11 In the device, opposite the labyrinth seal 14 and the fan boss 17 is located on the side, and send air Kyusuru to fan the air chamber 22 as well as the mounting ring 19 forming an air chamber 22 which communicates with the passage 16 of the bearing 13 of the labyrinth seal 14 is provided with a 21 at the tip portion of the mounting ring 19, the fan is actuated by feeding air into the air chamber the air flows from the air chamber to the bearing side by increasing the pressure in the air chamber to occur during the rotation of the rotary shaft let.