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    发布时间:2022-05-19 15:01:49人气:

      纸箱机械常用的非接触式密封形式有以下三种:

      1、隙缝密封。简单的结构形式是在轴和轴承盖的通孔之间留出半径间隙约为0.1~0.3mm的隙缝。这对使用脂润滑的轴承具有一定的密封效果。在轴承盖的通孔内车出环形槽,槽中填充润滑脂,可以提高密封的效果。

      2、迷宫式密封。迷宫是指由旋转的和固定的密封件之间构成的隙缝是曲折的。通常迷宫沿径向布置,隙缝小取为0.2~0.5mm。隙缝中常填入润滑脂。

      3、甩油环密封。在轴上开出沟槽或装上油环,借离心力将沿轴表面外流的油甩掉,集结后流回油池,因而起到密封的作用。但是,停车后便失去密封效果,故常和其他形式的密封联合使用。轴承内侧装设的甩油盘就是借离心作用将可能进入轴承内部的油甩掉,起到密封的作用。

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