随着现代科学技术的发展,旋转轴的密封也在不断地改进和完善,并逐步地为机械密封所代替。当前,由于石油、化工迅速发展的需要,我国许多炼油厂中的大部份离心泵和化工厂中的一部分离心泵的填料密封也逐渐改装成为机械密封的结构型式。因此,机械密封这个新技术得到了迅速的发展和广泛的应用。机械密封通常又称为端面密封。根据机械密封的作用原理,它是把两个光制的、精密的平面在流体介质的静压力和弹簧的作用下,互相紧贴着、并作相对旋转运动而达到密封目的 With the development of modern science and technology, the sealing of rotating shaft is also constantly improving and perfecting, and the mechanical seal is gradually replaced. At present, due to the rapid development of petroleum and chemical industry, most of our oil refineries and some centrifugal pumps in chemical plants have also been gradually modified into mechanical seals. Therefore, the mechanical seal of this new technology has been rapid development and extensive application. Mechanical seals are often referred to as end seals. According to the principle of mechanical seal, it is the two light, precision plane in the fluid medium under the action of static pressure and spring, close to each other, and for relative rotation to achieve the purpose of sealing