CN201810353U - Sweepforward type shaft seal structure - Google Patents
Sweepforward type shaft seal structure Download PDFInfo
- Publication number
- CN201810353U CN201810353U CN2010205611649U CN201020561164U CN201810353U CN 201810353 U CN201810353 U CN 201810353U CN 2010205611649 U CN2010205611649 U CN 2010205611649U CN 201020561164 U CN201020561164 U CN 201020561164U CN 201810353 U CN201810353 U CN 201810353U
- Authority
- CN
- China
- Prior art keywords
- shaft seal
- sweepforward
- shaft
- axle
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Supercharger (AREA)
Abstract
The utility model relates to a sweepforward type shaft seal structure, which comprises a shaft, a shaft seal body, a sealing ring and a shaft seal sleeve. A sealing ring groove is formed on the shaft seal body; the sealing ring is arranged inside the sealing ring groove; the shaft seal sleeve is sleeved on the sealing ring to form a double-sealing ring shaft seal; and the shaft seal body is positioned on the shaft through a shaft hole and is fixed on the shaft through a locking nut at a shaft end. The shaft seal body also comprises an integrally molded sweepforward blade, wherein the integrally molded sweepforward blade forms an oil-thrown shaft seal with the shaft seal sleeve; and the sweepforward blade and the shaft seal sleeve are arranged correspondingly. The sweepforward type shaft seal structure is simple, compact and reasonable in structure, can effectively improve oil sealing capacity of a supercharger, is low in centralized stress and long service life of products, and can meet the requirements of customers.
Description
Technical field
The utility model relates to a kind of sweepforward shaft seal structure, specifically oil can be thrown away running shaft effectively to play the device of good motive sealing, belongs to turbo-charger technical field.
Background technique
In pressurized machine, middle case is used for the axle of support high-speed rotation, needs sufficient machine oil to lubricate simultaneously, rotation spool output power to pressure impeller in the pressure shell, therefore to prevent that the machine oil in the middle case from spilling (in pressure shell), just need good motive sealing ability.The axle envelope is one of part of realizing this function.In existing shaft seal structure, can not get rid of oil effectively, oil leakage fault often takes place under some abominable operating conditionss.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of running shaft that oil can be thrown away effectively to play the sweepforward shaft seal structure of good motive sealing.
The technological scheme that provides according to the utility model, a kind of sweepforward shaft seal structure comprises axle, shaft seal housing, seal ring, axle big envelope, offer closure gasket groove on the described shaft seal housing, seal ring is installed in the closure gasket groove, the axle big envelope is enclosed within and forms double-sealing annulate shaft envelope on the seal ring, described shaft seal housing is positioned on the axle by axis hole, and is fixed on the axle by the locking nut of axle head.
Described shaft seal housing also comprises one-time formed sweepforward blade, and one-time formed sweepforward blade gets rid of oily formula axle envelope with axle big envelope formation.Described sweepforward blade and the corresponding setting of axle big envelope.
Described closure gasket groove is provided with two.Described seal ring is provided with two.The corresponding setting of described seal ring with closure gasket groove.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Can improve pressurized machine oil sealing ability effectively, stress is concentrated little simultaneously, and life of product is long, can satisfy client's demand.
Description of drawings
Fig. 1 is the utility model shaft seal housing structural front view.
Fig. 2 is the utility model shaft seal housing structure side view.
Fig. 3 is the utility model structural representation.
Fig. 4 is the utility model user mode supercharger structure schematic representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
Shown in Figure 1, comprise shaft seal housing 1, sweepforward blade 1-a, closure gasket groove 2, seal ring 3, axle big envelope 4, axis hole 5, axle 6.Offer two closure gasket grooves 2 on the described shaft seal housing 1, two seal rings 3 are installed in two closure gasket grooves 2, an axle big envelope 4 is enclosed within and forms double-sealing annulate shaft envelope 12 on the seal ring 3.
Described shaft seal housing also comprises one-time formed sweepforward blade 1-a, and one-time formed sweepforward blade 1-a gets rid of oily formula axle envelope 13 with axle big envelope 4 formations.Described sweepforward blade 1-a and the 4 corresponding settings of axle big envelope.
Shaft seal housing is positioned on the axle 6 by axis hole 5, and is fixed on the axle 6, with axle 6 high speed rotating by the locking nut of axle head.
As shown in Figure 2, be supercharger structure, comprise pressure shell 7, press impeller 8, middle case 9, volute 10, turbine 11, shaft seal housing 1.The combustion gas of high temperature enters expansion and sprays to turbine 11 at a high speed through the inlet of volute 10, makes turbine 11 obtain very high kinetic energy, and the combustion gas of expanding after doing work is drawn from outlet after volute 10 is collected.Turbine 11 drives by axle 6 and presses impeller 8 rotations, air enters pressure impeller 8 through the inlet of pressure shell 7, through pressing impeller 8 drivings to obtain very high speed, pressure raises behind the air process Diffuser reduction of speed at a high speed, and the air after the compression is drawn from the pressure shell outlet after pressure can be collected.To press impeller 8, shaft seal housing 1 to be fixed on the axle 6 by locking nut, and form rotor-support-foundation system together with turbine 11.Rotor-support-foundation system is supported in the middle case 9 by radial bearing, and carries out axially locating by thrust bearing.In supercharging gas when work,, when the pressure of pressing impeller 8 back sides during greater than the pressure in middle case 9 oil pockets, because action of pressure, the machine oil in the middle case 9 can not gone here and there in the pressure shell.But when pressurized machine (motor) ran to certain specific operating mode, the pressure at pressure specific pressure impeller 8 back sides of middle case 9 was big, and the interior machine oil of middle case 9 oil pockets this moment is easy to be leaked to the pressure shell end.
Pressure impeller locating face, thrust surface when the utility model uses is located at two end faces of shaft seal housing respectively.Press the impeller locating face to press impeller in order to the location, Thrust Faces is in order to the axially locating of rotor-support-foundation system, and forms certain lubrication gap.Radially-arranged chamber is formed on the blade of sweepforward, blade bottom surface and axle big envelope 4 planes that are fixed on the middle case 9, and machine oil is got rid of oily formula axle envelope 13 and drives acquisition speed in these chambeies, because action of centrifugal force machine oil is tangentially thrown away.Machine oil is thrown away constantly, the machine oil that accumulates in double-sealing annulate shaft envelope root will be seldom, has reduced the probability that middle case oil pocket inner engine oil is leaked to pressure shell; Because machine oil is thrown away constantly, between double-sealing annulate shaft envelope and seal ring, can form local low pressure simultaneously.Even therefore middle case oil pocket pressure still can keep pressure side pressure greater than the middle case end pressure greater than the pressure of pressure shell in the part, two ends of seal ring, therefore can leakage of oil.The anti-leakage of oil ability of this envelope is greatly improved within the specific limits.
Claims (4)
1. sweepforward shaft seal structure, comprise axle (6), it is characterized in that: also comprise shaft seal housing (1), seal ring (3), axle big envelope (4), offer closure gasket groove (2) on the described shaft seal housing (1), seal ring (3) is installed in the closure gasket groove (2), axle big envelope (4) is enclosed within seal ring (3) and goes up formation double-sealing annulate shaft envelope, and described shaft seal housing (1) is positioned on the axle (6) by axis hole, and is fixed on the axle (6) by the locking nut of axle head.
2. a kind of sweepforward shaft seal structure as claimed in claim 1 is characterized in that described shaft seal housing (1) also comprises one-time formed sweepforward blade (1-a), and described sweepforward blade (1-a) gets rid of oily formula axle envelope (13) with axle big envelope (4) formation.
3. a kind of sweepforward shaft seal structure as claimed in claim 1 is characterized in that described closure gasket groove (2) is provided with two, and described seal ring (3) is provided with two, the corresponding setting with closure gasket groove of described seal ring.
4. a kind of sweepforward shaft seal structure as claimed in claim 1 is characterized in that described sweepforward blade (1-a) and the corresponding setting of axle big envelope (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205611649U CN201810353U (en) | 2010-09-28 | 2010-09-28 | Sweepforward type shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205611649U CN201810353U (en) | 2010-09-28 | 2010-09-28 | Sweepforward type shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810353U true CN201810353U (en) | 2011-04-27 |
Family
ID=43893296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205611649U Expired - Lifetime CN201810353U (en) | 2010-09-28 | 2010-09-28 | Sweepforward type shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810353U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375188A (en) * | 2012-04-13 | 2013-10-30 | 于强 | Precise sealing ring support frame of turbocharger |
| CN104271918A (en) * | 2012-05-16 | 2015-01-07 | 博格华纳公司 | Flinger oil seal and turbocharger incorporating the same |
| CN106285923A (en) * | 2016-07-29 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of turbocharger seals gets rid of oil structure |
-
2010
- 2010-09-28 CN CN2010205611649U patent/CN201810353U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375188A (en) * | 2012-04-13 | 2013-10-30 | 于强 | Precise sealing ring support frame of turbocharger |
| CN104271918A (en) * | 2012-05-16 | 2015-01-07 | 博格华纳公司 | Flinger oil seal and turbocharger incorporating the same |
| CN106285923A (en) * | 2016-07-29 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of turbocharger seals gets rid of oil structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |