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This passage is going to talk about the followings of mechanical seal:
1) What is a mechanical seal?
2) The Key to Mechanical seals
3) The Technology Behind Mechanical seals
Power machinery with rotating shafts, such as pumps and compressors, are generally referred to as "rotating machinery". A mechanical seal is a packing that is installed on the power transmission shaft of rotating machinery. They are used in a variety of applications, from automobiles, ships, rockets and industrial plant equipment, to residential equipment.
The purpose of a mechanical seal is to prevent the leakage of fluids (water or oil) used in machines to the external environment (atmosphere or water bodies). The purpose of mechanical seals is to prevent environmental pollution, to save energy by increasing the operating efficiency of the machine, and to ensure the safety of the machine.
Generally, machines using mechanical seals have a large container with a rotating shaft in the center of the container (for example, a mixer). Cases without mechanical seals are prone to fluid leakage; cases with packing are prone to shaft wear and require regular lubrication to prevent wear; but as long as you use cases with mechanical seals, your shafts will not wear and will be virtually leak-free.
This control of fluid leakage is known in the mechanical seal industry as a "seal".
While the two sealing points in a primary seal design are simple static seals, the seal between rotating and stationary components requires more consideration. This primary seal is the foundation of all seal designs and is critical to their effectiveness.
The main seal is essentially a spring-loaded vertical bearing that consists of two very flat faces, one fixed and one rotating, opposite each other. The sealing faces are pushed together using a combination of hydraulic pressure from the sealing fluid and elastic force from the seal design. This creates a seal to prevent process leakage between the rotating (shaft) and stationary areas of the pump.
The surface of the seal face is highly ground and has a high degree of flatness; typically, 2-3 helium strips (0.00003 inches/0.0008 mm).
If the sealing surfaces are rotated relative to each other without some form of lubrication, they will wear and fail rapidly due to face friction and heat generation. Therefore, some form of lubrication is required between the rotating and fixed sealing surfaces.
Due to the functions and applications described above, mechanical seal technology is the sum of mechanical engineering and physical performance technology. More specifically, the core of mechanical seal technology is tribological (friction, wear and lubrication) technology, which is used to control the surfaces on which the fixed and rotating rings rub (slide) against each other.
Mechanical seals with improved functionality not only prevent the leakage of liquids or gases handled by the machine to the outside, but also increase the operating efficiency of the machine, thus helping to achieve energy savings and prevent environmental pollution. In addition, in some cases, the media handled by rotating machinery can lead to dangerous accidents in case of leakage. Therefore, manufacturing supported by reliable engineering expertise requires mechanical seals with a high degree of reliability.
These functions and roles will make mechanical seals increasingly important in the future. Further technological innovations are expected from them. In order to respond positively to these expectations, we are working on technology development every day.