Oil tank is kept apart to vacuum oil air

The utility model relates to an oil tank is kept apart to vacuum oil air, including the box, keep apart gasbag, interior isolation gasbag outward, keep apart the gasbag setting outward outside the box, the inner chamber of keeping apart gasbag and box outward is linked together, and the setting of interior isolation gasbag is in the box, the outside of box is equipped with the third air cap that is linked together with interior isolation gasbag. The beneficial effects of the utility model are that: can effectually stop the contact of fluid and air, simultaneously can also avoid appearing in extreme rugged environment in dust and moisture enters into fluid, prolong fluid and hydraulic system's life. 本实用新型涉及种真空油空气隔离油箱，包括箱体、外隔离气囊、内隔离气囊，外隔离气囊设置在箱体外，外隔离气囊与箱体的内腔相连通，内隔离气囊设置在箱体内；箱体的外部设有与内隔离气囊相连通的第三空气帽。本实用新型的有益效果是：能够有效的杜绝油液和空气接触，同时还能避免在极端恶劣的环境中出现灰尘和水分进入到油液内，延长了油液及液压系统的使用寿命。