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接触式密封常用形式的种类

(2009-04-21 08:58:52)
标签:

接触式

杂谈

    接触式密封常用形式有两种。
  1、皮碗密封。密封件是用耐油橡胶或皮革制成的碗形件,放进轴承盖中,用环形螺旋弹簧压紧皮碗的唇部,使皮碗与轴颈密切接触,密封唇的方向应朝向需密封的部位。皮碗密封的结构简单,安装方便,易于更换,密封可靠,但接触面滑动不能太高,一般用于v<10m/s的油润滑或者脂润滑处,而且轴颈表面径精车和抛光。
  2、毡圈密封环。密封件为用细毛毡制成的环形毡圈。轴承盖上开出梯形槽,毡圈嵌入梯形槽中与轴颈密切接触。这种密封结构简单,安装方便,但是密封压紧力小,且不易调节。一般只能用于低速v<5m/s的脂润滑和很低速度的油润滑装置中。

Commonly used form of contact, there are two seals.
1,皮碗sealed. Oil seals are made of rubber or leather pieces bowl, put in the bearing caps, with the annular coil spring皮碗the lips pressed so皮碗close contact with the journal, the direction of sealing lips to be sealed should be directed to site. Sealed皮碗simple structure, easy installation, easy replacement, a reliable seal, but the sliding surface can not be too high in general for v <10m / s of oil or grease lubrication lubrication, and that fine journal diameter surface and polishing cars.
2, sealing ring loop carpet. Seals made blankets for the use of small circular loop carpet. Bearing trapezoidal groove stamped out, felt ring embedded trapezoidal tank in close contact with the journal. This sealing structure is simple and easy to install, but pressed edge sealing small, and difficult to regulate. General can only be used for low-speed v <5m / s and the low rate of lubricating grease oil lubrication device.

 

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