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Labyrinth seal with oil scraping structure and oil scraping method

A technology of labyrinth seal and oil scraper, applied in the direction of engine sealing, engine lubrication, engine components, etc., can solve the problems of leaking grease, insufficient sealing performance, inability to adapt, etc., and achieve the effect of preventing leakage and good sealing.

Pending Publication Date: 2020-11-13
童春国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to its simple structure, the existing labyrinth seals only have multiple sealing teeth inside, and their sealing performance can only be applied to the light-load and low-viscosity lubricating grease working conditions in the main shaft gear seat. When working with heavy-duty and high-viscosity lubricating media, the existing labyrinth seals cannot adapt due to insufficient sealing performance, and more grease will leak from the main shaft gear seat over time

Method used

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  • Labyrinth seal with oil scraping structure and oil scraping method
  • Labyrinth seal with oil scraping structure and oil scraping method
  • Labyrinth seal with oil scraping structure and oil scraping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as Figure 1-6 As shown, the present invention provides a labyrinth seal with an oil scraping structure. The labyrinth seal 100 includes a moving ring 10 fixedly installed on the gear 300 and a static ring 20 fixedly installed on the gear cover 303. The moving ring 10 accommodates Inside the stationary ring 20, at least one oil scraper 22 is provided on one side of the stationary ring 20 against the surface of the moving ring 10, and the oil scraper 22 is used to move the gear 300 axially The lubricating grease 400 on the end face is scraped to the oil storage tank formed by the gear cover lower section 3031 of the gear cover 303 .

[0054] By setting an oil scraper 22 on the inner wall of one side of the static ring 20 against the surface of the movable ring 10, when the movable ring 10 starts to rotate with the gear 300, the oil scraper 22 can move the distance between the movable ring 10 and the static ring 20. The lubricating grease in the gap is scraped and s...

Embodiment 2

[0070] Such as Figure 7 As shown, the labyrinth seal 100 also includes at least one scraper adjuster 30, the scraper adjuster 30 includes a sleeve 31, an elastic member 36 and a locking member, and the sleeve 31 is fixedly installed on the static In the installation hole of the ring 20, the elastic member 36 is installed in the cavity of the sleeve 31, and one end of the elastic member 36 is against one side of the oil scraper 22, so that the oil scraper 22 The other side is against the surface of the moving ring 10 , and the other end of the elastic member 36 is provided with a locking member fixed in the cavity of the sleeve 31 . Wherein the oil scraper 22 can be made of flexible material. The elastic member 36 can be designed as a compression spring.

[0071] In order to ensure the tight and flexible fit between the side of the oil scraper 22 and the surface of the moving ring 10, an elastic member 36 is provided on one side of the oil scraper 22, that is, the oil scrape...

Embodiment 3

[0075] Such as Figure 8 As shown, the number of the oil scraper 22 is four, and each of the oil scraper 22 is evenly distributed on the inner peripheral surface of the stationary ring 20 .

[0076] By distributing each oil scraper plate 22 evenly on the inner peripheral surface of the stationary ring 20, it is ensured that the upper and lower sections of grease in the gap between the moving ring 10 and the stationary ring 20 are scraped to the oil storage tank below. .

[0077] preferred, such as Figure 5 , 6 , 8, the first end 221 of each oil scraper 22 is set to be close to the axial end face of the gear 300, and the second end of each oil scraper 22 is set to be away from the axial end of the gear 300 The end face, each of the oil scraper 22 and the axial end face of the gear 300 has a certain inclination angle, and the inner surface of each of the oil scraper 22 faces the axis of the stationary ring 20 so that the lubricating oil returns to the gear In the oil storag...

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Abstract

The invention relates to a labyrinth seal with an oil scraping structure and an oil scraping method. The labyrinth seal comprises a dynamic ring which is fixed on a gear and a static ring which is fixed on a gear shield; the dynamic ring is accommodated in the static ring; at least one oil scraping plate which is resisted against the surface of the dynamic ring is arranged on one side inner wall of the static ring; and the oil scraping plate is used for scraping lubrication oil which flows into a dynamic gear socket from a gear edge into an oil storage tank which is arranged below the gear shield. According to the labyrinth seal with the oil scraping structure, the oil scraping plate which is resisted against the dynamic ring is arranged on one side inner wall of the static ring; when thedynamic ring rotates along with the gear, the oil scraping plate scrapes lubrication oil between the dynamic ring and the static ring into the oil storage tank which is arranged below the gear shield;and in a heavy-load high-stickness lubrication medium working condition, the labyrinth seal also has good sealing performance when being applied to a main shaft gear stand, and the lubrication oil iseffectively prevented from being leaked out of the main shaft gear stand.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a labyrinth seal with an oil scraping structure and an oil scraping method thereof. Background technique [0002] The labyrinth seal is to set a number of annular sealing teeth arranged in sequence around the rotating shaft. A series of cut-off gaps and expansion cavities are formed between the teeth. To achieve the purpose of leak prevention. Due to the characteristics of simple structure, no friction, simple maintenance and reliable operation, labyrinth seals are widely used in the main shafts of power machinery such as rotary compressors, blowers and steam turbines, such as main shaft gear seats. [0003] However, due to its simple structure, the existing labyrinth seals only have multiple sealing teeth inside, and their sealing performance can only be applied to the light-load and low-viscosity lubricating grease working conditions in the main shaft gear seat. When...

Claims

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Application Information

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IPC IPC(8): F16J15/16F16J15/34F16N31/02
CPCF16J15/16F16J15/34F16N31/02
Inventor 童春国
Owner 童春国
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