Because mechanical seals have the advantages of low leakage and long life, mechanical seals in the world today are the main shaft sealing methods in these devices. The transmission shaft penetrates the inside and outside of the equipment. In this way, there is a circumferential clearance between the shaft and the equipment. The medium in the equipment leaks through the clearance. If the pressure in the equipment is lower than the atmospheric pressure, the air leaks into the equipment. Therefore, there must be a blockage. Leaking shaft seals. Many types of shaft seals, mechanical seals, also known as face seals, are defined in the relevant standards: "At least one pair of end faces perpendicular to the axis of rotation in the role of fluid pressure and compensation mechanism elastic (or magnetic) and auxiliary sealing A device for preventing fluid leakage that is formed by holding together and sliding relative to each other."
The seal ring is the general name of the moving ring and the stationary ring, and is the main component of the mechanical seal. The seal ring largely determines the service performance and life of the mechanical seal. Strive for simple symmetry and give priority to the use of integrated structure, can also be combined (such as insert type) seal ring, try to avoid the use of sealed end spray structure. The seal face should have sufficient hardness and corrosion resistance to ensure a satisfactory service life under working conditions. The seal ring should have good thermal shock resistance. For this purpose, the material must have high thermal conductivity and a small linear expansion coefficient, and should not crack when subjected to thermal shock. With sufficient strength and stiffness, under the working conditions (such as pressure, temperature and sliding speed, etc.) is not damaged, the deformation should be as small as possible, and the sealing performance can still be maintained when the working conditions fluctuate. There should be a small coefficient of friction and good self-lubrication. The matching of the seal ring should have a small friction coefficient and good self-lubrication. The seal ring material and the seal fluid should also have good wettability. If dry friction occurs for a short period of time during operation, the sealing face is not damaged. The sealing ring should be easy to manufacture, installation and maintenance should be convenient, and the price should be low.
Floating seal ( )
Corporate contact information is as follows:
Company Name: Shanghai Luo Geng Electromechanical Technology Co., Ltd.
Address: Room 1810, Block C, 547 Tianmu West Road, Shanghai
Contact: Manager Chen
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