What is mechanical seal?Single mechanical seal? Double mechanical seal? What's the shaft seal?
2. mechanical seal is a kind of rotating machinery shaft seal device. Such as centrifugal pumps, centrifuges, reactors and compressors and other equipment. Due to the drive shaft through the inside and outside of the equipment, so there is a gap between the shaft and the peripheral equipment, equipment in the media leak out through the gap, if the device internal pressure below atmospheric pressure, air leakage to the equipment, so there must be a package of the shaft to prevent leakage. There are many kinds of shaft seals, because mechanical seals have the advantages of less leakage and long service life
1. mechanical seals (mechanical seal) is defined by at least a pair of end faces perpendicular to the axis of rotation of the fluid pressure and the elasticity of compensation organizations (or force) the role of the device and auxiliary seal with maintaining relative sliding postmerger and constitutes to prevent fluid leakage. The elastic loading mechanism and the auxiliary seal are the mechanical seals of metallic corrugated tubes, which we call metal bellows seals. In the light seal, as well as the use of rubber bellows as an auxiliary seal, rubber bellows elastic limited, generally need to be supplemented with spring to meet the loading elasticity. Mechanical seals are often referred to as "mechanical seals"".
So in today's world, mechanical seal is the most important shaft seal in these equipment. The mechanical seal is also called the seal, in the relevant national standard is defined as: "by at least a pair of end faces perpendicular to the axis of rotation of the fluid pressure and the elasticity of compensation organizations (or magnetic) device and the role of the coordination of auxiliary seals to keep up with the relative sliding to prevent fluid leakage. "
