In the mechanical industry, the filling seal is mainly used as dynamic sealing, and is often used as a rotor seal of centrifugal pumps, compressors, vacuum pumps, and mixers. After the filler is loaded into the filling cavity, the screw of the dialogenic cover is compressed to it. When the shaft and the filler are relative to exercise, due to the plasticity of the filler, it produces radial force and is closely in contact with the shaft. At the same time, the lubricant immersed in the filler is squeezed out and forms an oil film between the contact surface. Because the contact state is not particularly uniform, the contact site appears

The border lubrication state is called the "bearings effect"; the unprepared concave parts form a small oil groove, which has a thicker oil membrane. Mystery effect. This is the mechanism of packing. A good seal is to maintain the "bearing effect" and "maze effects". In other words, it is necessary to maintain good lubrication and proper compression. If the lubrication is poor, or if the pressure is too tight, the oil membrane will be interrupted, causing dry friction between the fillers and the axis, and the burning shaft and severe wear. Therefore, we need to regulate the pressure of the filler frequently, so that the lubricant in the filler is lost for a period of time, and then squeeze out some lubricants. At the same time Essence Of course, this is often squeezed into the filling, which will finally dry the immersion agent, so it is necessary to replace the filler regularly. In addition, in order to maintain the liquid film and take away friction heat, it is also necessary to make a small amount of leakage in the filler.