The use of a mechanical seal for kettle is vertical through the end surface of the minimum pair and the rotating axis, and the elasticity (or magnetic) effect of the fluid pressure and the compensation mechanism. An exposed device. The auxiliary seal of the compensation ring with mechanical seal for kettle is a metal ripple tube, which can also be called a ripple mechanical seal.
The mechanical seal for kettle can be divided into interior and outer type according to the installation position of the headed head; mechanical sealing according to the structure and layout of the elastic element can be divided into multiple spring, film, single spring, and ripple tubes, etc. The quantity of the sealing surface and the sealed head can be divided into single -end and two -terminal surface; the degree of stress unloading of mechanical sealing according to the medium can be divided into balance type and non -balanced type.
The mechanical seal for kettle is mainly device that reaches the axial -oriented seal with the pre -tightening of the elastic element, the pre -tightening side of the surface of the dynamic ring, the pressure of the medium, and the pressure of the elastic element pressure. Usually mechanical seals are divided into two categories: contact type and non -contact type. Mechanical sealing contains leaks, which can be limited to small, high seal pressure, long life, good vibration resistance, no need to adjust during operation (with pressure of springs and fluids), and inconvenient structural disassembly.
There are five aspects of the kettle's mechanical sealing. It is easy to wear: the first is to erode (brush) wear: formed by the high -speed flow of the liquid or gas; the second is the wear and wear: it is very easy to wear This wear occurs. The third is adhesion and wear: two types of sliding friction sub -material surface force attract each other. The fourth is the abrasive wear: because the two rough surfaces are crushed or the outer miscellaneous objects in the seal gap are used as abrasives. The fifth is surface fatigue wear: the fatigue cracks and thermal stress cracks on the surface of the surface.