联系人:孔经理
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地址：中国.河北省.河间市
成型填料按工作原理分为挤压型密封及唇形密封两类。挤压型及唇型密封按其界面形状又可分为数种，并以截面形状命名，如O形圈、L形圈等。
Molding packing divided by the working principle of extrusion type sealing and lip seal two.Extrusion type and the lip seal on the interface shape and can be divided into several types, and the section shape name, such as O ring, L ring etc..
油封实际上是一种唇形密封，因其品种规格繁多，需要量大而另列一类。油封也有橡胶油封、塑料油封及皮革油封等。它在石油、化工、机械等行业中有着广泛用途。
挤压型密封依靠装填沟槽施加的预压缩弹性变形，阻塞泄露通道，获得密封效果。当在介质压力作用下，接触面上的接触压力增加，可进一步提高密封效果。
The oil seal is actually a lip seal, because of the different specifications, the demand for largeand a separate category. Oil seal with rubber seal, plastic seal and leather oil seal. It is widely used in petroleum, chemical, machinery and other industries.
唇型密封亦依靠装填沟槽的预压缩弹性变形阻塞泄漏通道，并在介质压力的作用下，唇口进一步贴紧对偶件，增强阻塞密封效果。这一特性，被称为自封作用。唇型密封因此又称为自紧型密封。
Compression elastic deformation extrusion seal relies on loading groove applied pre, blockingleakage channels, sealing is obtained. When in the medium under pressure, the contact pressure on the contact surface increases, which can be further
正确设计的成型填料密封泄漏量不大，有时可低于机械密封。做静密封件时，泄漏量更少。
Leakage is not properly designed molding packing seal, mechanical seal is sometimes lower than. Static seal, leakage less.
成型填料的泄漏与工作面上的液膜关系密切。泄漏计算的关键便是确定液膜形态与尺寸。由于影响液膜的因素相当复杂，目前尚无使用的计算方法。因此，成型填料的泄漏量由相应的经验数值或根据实验统计资料给予规定。
Molding packing leakage relationship with work on the surface of the liquid film close. The leakage calculation key is to determine the film morphology and size. Because of the influence of membrane complex factors, calculation method of no use. Therefore, the leakage molding packing by corresponding numerical experience or stipulated according to the experimentaldata.
根据实验得知，成型填料密封的泄漏量与轴杆速度的平方成比例增大。泄漏量随介质粘度的1.5次方增大。当介质压力不高时，泄漏量随介质压力增高而直线上升；当介质压力增高到某一限度后（对挤压型密封约为3MPa，对唇型密封约为7~10MPa，泄漏量对压力变化不敏感。在合理限度内适当提高密封圈材料硬度，可使泄漏量下降。泄漏量将伴随压力的脉动而明显增加。对于脉动压力或恒定压力，虽然两者的最大值相 等，但前者的泄漏量将比后者增大5倍至65倍之多。各种成型填料的泄漏量差异不大，可认为泄漏量与密封圈种类关系不大。
According to the experimental results, molding packing seal leakage and the shaft speed is proportional to the square. Leakage increases with the 1.5 power of the medium viscosity. When the medium pressure is not high, the leakage of the medium pressure increases and the rise in a straight line; when the media pressure is increased to a certain limit (on extrusion type seal is about 3MPa, the lip seal is about 7~10MPa, the leakage is not sensitive to the change ofpressure. Appropriate increase within reasonable limits the ring material hardness, can make the leakage decreased. Pulse leakage with pressure and increased. For the fluctuating pressure or constant pressure, although the two maximum phase, but the leakage of the formerthan the latter is increased 5 times and 65 times as much. Leakage difference in variousmolding packing, can think of leakage and sealing ring type is.
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