Floating oil seal with narrow-line and narrow-face friction pair

Abstract

The invention provides a floating oil seal with a narrow-line and narrow-face friction pair. The floating oil seal comprises a pair of sealing ring bodies. The structures of the sealing ring bodies are vertically symmetrical. Friction-resistant assemblies are arranged on the two opposite end faces of the pair of sealing ring bodies respectively. The two friction-resistant assemblies form the friction pair which is oppositely matched. One friction assembly of the friction pair is a plane friction assembly, the friction working face is a plane, and the minimum width of the friction working face is larger than the maximum center eccentric distance allowed when the floating oil seal is assembled; and the other friction assembly is an accurate-face friction pair assembly, the section of the friction assembly is in the shape with one side narrow and one side wide, and the narrow line type end face of the narrow side is a working face. By means of the floating oil seal, the wear resistance of the working faces can be effectively improved, the service life can be prolonged, and sealing can be effectively ensured.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a floating oil seal with narrow lines and surface friction pairs used for sealing floating end faces in mechanical equipment. Background technique [0002] The floating oil seal is applied to the floating end face seal. It is a mechanical seal with a large amount of use and wide application (the annual demand in the country exceeds 100 million pieces). The "O" type rubber sealing ring is assembled in the special sealing cavity - the floating seal seat. Its metal sealing surface has the characteristics of wear resistance, impact resistance, certain adaptability, long life, simple structure, low price, and convenient maintenance and replacement. It is widely used in mining, construction machinery, construction machinery, agricultural machinery, transportation machinery, deep well drilling rig , It is widely used in the sealing structure of underground mining machinery. Due to the special...

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Problems solved by technology

[0010] Similarly, the symmetrical structure determines that there will be a gap between the contact surfaces of the two oil seals, and the sealing oil and grease will leak, which will affect the contact quality and sealing effect of the friction pair.

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