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2021

What problems should be paid attention to in the design process of rotating sealing ring?

The rotating sealing ring is a kind of circular cross-section seal. It has the advantages of simple seal structure, compact installation parts, and light weight. It is resistant to most media and has strong chemical resistance; it is resistant to high pressure, wear and high temperature; it has low friction, It does not crawl when starting, and can continue to move even at low speed; good dimensional stability; good sealing performance, almost no leakage when used as a fixed seal, and only partial leakage when used as a dynamic seal; and it has the advantages of standardization of size and groove, low cost, easy access to products, convenient use and outsourcing, and can be used in some occasions that require piston rod or piston seal.

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In various industrial fields such as construction machinery, construction machinery, automotive equipment, etc., mechanical seals are indispensable. Rotating sealing rings can withstand the two-way action of pressure or alternating pressure on both sides. At present, they have been widely used in rods, shafts, Pins, rotary joints, etc., have rotating or swinging actions, and have been widely praised.

　　Rotating seal ringIt is a kind of seal with a circular cross section. It has the advantages of simple seal structure, compact installation parts, and light weight. It is resistant to most media and has strong chemical resistance; it is resistant to high pressure, wear and high temperature; it has low friction and does not start Crawling, it can continue to move even at low speed; good dimensional stability; good sealing performance, almost no leakage when used as a fixed seal, only partial leakage when used as a dynamic seal; and it has the advantages of standardization of size and groove, low cost, easy access to products, convenient use and outsourcing, and can be used in some occasions that require piston rod or piston seal.

The rotating seal ring is generally sealed by the rebound generated by compression, but with the increase of pressure, it is squeezed into the seal gap and its shape changes. Therefore, in order to have a good sealing effect and prolong its service life, in the design process of the rotating seal ring, we must pay attention to the relationship between rubber hardness, sealing gap size, pressure level and cross-sectional diameter of the rotating seal ring, select the design scheme of small compression deformation and good sealing performance.

At present, most of the mechanical seal designs seen on the market are made of soft materials, so that the rotating surface rotates and rubs on the hard stationary surface. No matter what material is used, in short, a layer of liquid film must be maintained between the contact surfaces. Play a role in lubrication. Therefore, in the future development, the major seal manufacturing companies will continue to take the road of innovation and development, continue to strive to improve the straightness of the contact surface of the rotating seal ring, carefully handle these seal contact surfaces, and strictly follow the installation instructions to ensure The sealing surface is properly protected and correctly positioned.

Key words:

Rotary seal,Rotating seal ring