Sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage

A mechanical seal, non-contact technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve problems such as leakage, and achieve the effect of long service life, compact structure and easy installation.

Inactive Publication Date: 2017-09-22
SICHUAN XINCHUAN AVIATION INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and the purpose is to provide a non-contact mechanical seal and a sealing assembly for preventing lubricating oil leakage, so as to solve the leakage problem caused by the wear between the moving ring and the static ring

Method used

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  • Sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage
  • Sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage
  • Sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage

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Embodiment

[0025] Such as Figure 1-3 As shown, the present invention is a non-contact mechanical seal and a sealing assembly for preventing lubricating oil leakage, which is applied to a pumping dynamic seal for sealing mineral oil or lubricating oil. The seal is mainly composed of a static ring assembly and a dynamic The ring consists of two parts. The product structure and main dimensions are shown in the following 1. It consists of a static ring cover 1, an O-ring seal 2, a wave spring 3, a gasket 4, an O-ring seal 5, a collar 6, a graphite ring 7 and a moving ring 8. attached figure 2 Among them, the outer part of ΦA on the working end surface of the dynamic sealing ring 8 is the sealing dam 11 , and the parts of the two hydrodynamic pressure grooves 12 are the sealing weir 10 . The structural shape of the fluid dynamic pressure groove 12 is determined according to the diameter of the working end surface of the sealed graphite static ring 7 and the actual situation. The inner sur...

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Abstract

The invention discloses a sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage. The sealing assembly comprises a sealing graphite static ring and a dynamic sealing ring. A wavy spring acting the pretension force effect is arranged on the rear end face of the sealing graphite static ring, and fluid dynamic pressure grooves are additionally formed in the working end face of the dynamic sealing ring in a surrounding and evenly distributed mode. Half of the working end face on the outer side of the sealing graphite static ring is attached to a sealing dam of the dynamic sealing ring, and half of the working end face on the inner side of the sealing graphite static ring is attached to the excircle sides of the fluid dynamic pressure grooves and the sealing dam. The sealing assembly is compact in structure and easy to install and does not need to be daily maintained; under the normal working condition, no contact abrasion between the dynamic ring and the static ring exists, a large amount of heat due to friction cannot occur, thus, the service life is long, and the sealing assembly is particularly applicable to high-speed rotary sealing; and if the device is well operated, the zero-abrasion-and-zero-leakage effect can be achieved.

Description

technical field [0001] The invention relates to the field of sealing products, in particular to a non-contact mechanical seal and a sealing assembly for preventing lubricating oil leakage. Background technique [0002] At present, the machinery and equipment used in industrial production are generally equipped with sealing devices, and most of them use contact mechanical seals. However, in some dynamic seals in high-speed and high-pressure situations, the contact friction pair composed of dynamic and static rings will generate a lot of heat during the operation of the equipment, resulting in increased wear, seal failure, and reduced seal life. Therefore, the development direction of non-contact mechanical seals with spiral grooves on the sealing surface and sealing components to prevent oil leakage is to reduce leakage, reduce wear, improve reliability and working stability, and prolong service life. [0003] Therefore, how to provide a dynamic seal assembly to avoid leakag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16
CPCF16J15/164
Inventor 高波郑强马文涛
Owner SICHUAN XINCHUAN AVIATION INSTR
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