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Sealing structure for rotating part

A technology of sealing structure and rotating parts, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of oil leakage, affecting the sealing effect, displacement or deformation of the oil seal lip, and achieve good sealing effect and easy maintenance. , good sealing effect

Inactive Publication Date: 2015-09-09
SHAANXI FAST GEAR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, oil seals are often used to seal rotating moving parts, but when the pressure of the sealing medium is extremely high, the lip of the oil seal is prone to shift or deformation under high pressure conditions, which affects the sealing effect
Only using high-pressure oil seals to seal rotating parts tends to cause oil leakage

Method used

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  • Sealing structure for rotating part
  • Sealing structure for rotating part
  • Sealing structure for rotating part

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Effect test

Embodiment Construction

[0023] The present invention is described in further detail below in conjunction with accompanying drawing:

[0024] see figure 1 , When the present invention works normally, the decompression ring 1, the rotating shaft 2, the oil seal seat 6, the labyrinth outer ring 7, and the flange 10 rotate together. The pressure ring 1 is installed in the groove of the rotating shaft 2, and the high-pressure oil seal 5 and the installation hole of the fixed part are interference fit and stand still during normal operation, and contact with the oil seal seat ring 6 to play the role of dynamic sealing. The first O-ring 3 and the second O-ring 4 are respectively installed in the grooves of the rotating shaft 2 and the flange 10 . The labyrinth inner ring 8 is installed on the fixed parts with bolts, and a groove is arranged on the outer side of the labyrinth inner ring 8 for installing the third O-ring 9 . The invention adopts decompression design, oil seal, static seal and labyrinth seal...

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Abstract

The invention discloses a sealing structure for a rotating part. The sealing structure comprises a rotating shaft, a flange plate, and a fixing part connected with the rotating shaft, wherein a pressure reduction ring for reducing the pressure of a high pressure oil seal when the rotating shaft rotates at a high speed is arranged between the rotating shaft and the fixing part; oil seal seat rings are arranged between the high pressure oil seal, the rotating shaft and the flange plate; the part in which the high pressure oil seal and the oil seal seat rings are connected is dynamically sealed; the side surface of the high pressure oil seal is sealed to the flange plate through a maze sealing structure. According to the sealing structure, the pressure reduction design, the oil seal for sealing, the static sealing and the maze sealing modes are combined to seal the rotating part under a high pressure condition; the sealing effect of the rotating part under the high pressure condition is superior to that of the traditional independent oil seal; in addition, the repair is convenient; the high pressure oil seal can be conveniently replaced by dismounting the oil seal seat rings during replacing the oil seal; therefore, the process of dismounting the rotating shaft during replacing the oil seal can be avoided.

Description

【Technical field】 [0001] The invention belongs to the technical field of sealing structures, and relates to a sealing structure for rotating parts. 【Background technique】 [0002] At present, oil seals are often used to seal rotating parts. However, when the pressure of the sealing medium is extremely high, the lip of the oil seal is prone to shift or deformation under high pressure conditions, which affects the sealing effect. Only using high-pressure oil seals to seal rotating parts often results in oil leakage. A combined sealing structure can be used to solve the sealing problem under high pressure. [0003] A pressure-reducing structure can be used before the high-pressure oil seal to first reduce the working pressure of the high-pressure oil seal, and then adopt the method of combining static seal and labyrinth seal to prevent tiny leakage and improve the sealing quality of rotating parts. 【Content of invention】 [0004] The object of the present invention is to ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/20F16J15/447
CPCF16J15/06F16J15/447
Inventor 孙博王伟健
Owner SHAANXI FAST GEAR CO
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