CN2182303Y - Sealing device for rotation axis - Google Patents
Sealing device for rotation axis Download PDFInfo
- Publication number
- CN2182303Y CN2182303Y CN 93229756 CN93229756U CN2182303Y CN 2182303 Y CN2182303 Y CN 2182303Y CN 93229756 CN93229756 CN 93229756 CN 93229756 U CN93229756 U CN 93229756U CN 2182303 Y CN2182303 Y CN 2182303Y
- Authority
- CN
- China
- Prior art keywords
- oil
- hole
- flange
- negative pressure
- communicated
- 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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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a sealing device for rotation, which is suitable for the axis head extending towards the outer part of the crank of the diesel engine. The utility model comprises a flange (1) and a coaxial gear (4) fixedly connected with the flange; the face of the outer column which is composed of the flange hub of the flange and a gear hub is sheathed with a fixed sealing cover (3) in sliding way; the inner part of a hole is provided with an oil draining groove (2); the wall of the groove is provided with an oil draining hole (A). The utility model is characterized in that the inner part of the main pipe of the machine oil comprises a high-pressure oil source (P) which is communicated with the oil inlet hole of a negative pressure generator (K), a high-pressure oil pipe (L1) which is communicated with the high-pressure oil source and the oil inlet hole of the negative pressure generator, and an oil draining pipe which is communicated with an oil sucking pipe (C) and the oil draining hole (A) on the sealing cover (3) with oil (L2). The utility model has advantages of simple structure and reliable sealing.
Description
The utility model relates to a kind of sealing device for rotary shaft, is particularly useful for the sealing of the overhanging spindle nose of crankshaft of diesel engine.
In the sealing of the overhanging spindle nose of existing crankshaft of diesel engine,, the centrifugal seal of disc formula and the labyrinth sealing of ring channel structures have therefore been adopted owing to be subjected to the restriction of its axial dimension.But because in the process that the oil gas that the machine oil in the crankcase is produced under the high temperature and the effect of splashing outwards overflows along the gap between rotating shaft and sealing cover, meeting the liquid that condensation forms still can be to external leakage.As on the 16V24OZJC diesel engine with regard to the problem existing.
The sealing device for rotary shaft that the utility model relates to, its purpose are exactly to increase a negative pressure generator on original seal arrangement, and the annular negative-pressure sealing band of gap location generation at rotating shaft and sealing cover stops the oil and gas leakage in the crankcase.The sealing device for rotary shaft that the utility model relates to, comprise flange and coaxial with it fixedly connected gear, on the external cylindrical surface that the flange hub and the gear wheel hub of flange are formed, slidably suit fixing sealing cover, be provided with drain pan in its hole, on the cell wall of this groove, have the draining hole, its structural feature is: have high pressure fuel source in the machine oil house steward, the negative pressure generator that is communicated with high pressure fuel source, be provided with oil inlet hole and the spill port concentric in this generator with this hole, spill port passes to oil sump, is communicated with the high-pressure oil pipe of the oil inlet hole of high pressure fuel source and negative pressure generator, the drain mast that also is provided with oil-sucking hole on the negative pressure generator and is communicated with draining hole on the sealing cover.Negative pressure generator comprises an elbow-for-nozzle, is installed in interior nozzle of this elbow and the sealing gasket between junction plane thereof.
The sealing device for rotary shaft that the utility model relates to, through the installation evidence, in the running shaft cylinder and the annular drain pan in the sealing cover of flange flange hub and gear wheel hub composition, negative pressure by the negative pressure generator generation, make the excessive oil gas of desire return oil sump, thereby solved along the problem of the outside leakage of oil of rotating shaft axial clearance through drain mast.
Fig. 1 is the erection drawing of the sealing device for rotary shaft that relates to of the utility model.
Fig. 2 is the sectional view in E-E cross section among Fig. 1.
Fig. 3 is the sectional view in F-F cross section among Fig. 1.
Now details are as follows to the embodiment of the related sealing device for rotary shaft of the utility model in conjunction with the accompanying drawings:
As shown in Figure 2, flange (1) and coaxial with it fixedly connected gear (4), on the external cylindrical surface that flange flange hub and gear wheel hub are formed, slidably suit the sealing cover of fixing (3), be provided with annular drain pan (2) in this lid hole, have draining hole (A) on the cell wall.
As shown in Figure 1, there is high pressure fuel source (P) in the machine oil house steward, what be communicated with this oil sources has a negative pressure generator (K), this generator is provided with oil inlet hole (B) and the spill port (D) concentric with oil inlet hole, spill port passes to the oil sump (not shown), the high-pressure oil pipe (L1) that is communicated with the oil inlet hole of high pressure fuel source and negative pressure generator, the drain mast (L2) that also is provided with oil-sucking hole (C) on the negative pressure generator and is communicated with draining hole on the sealing cover.
As shown in Figure 3, a T shape elbow-for-nozzle (7) is arranged on the negative pressure generator (K), nozzle (5) is housed in elbow-for-nozzle, spill port (D) on oil inlet hole on this nozzle (B) and the elbow-for-nozzle is a concentric hole, sealing gasket (6) is housed between elbow-for-nozzle and nozzle junction plane, on elbow-for-nozzle, also is provided with oil-sucking hole (C).
When diesel engine is worked, bent axle is by vibration damper driven gear and flange coaxial rotation, simultaneously, set up oil pressure (P) in the machine oil house steward, oily temperature in the crankcase increases and produces splashes, it is excessive that oil gas just begins to reach the fixing formed gap of cap apertures along the cylinder of flange flange hub and gear wheel hub composition, this moment, high pressure oil entered the oil inlet hole (B) of negative pressure generator through oil pipe (L1), spray to the oil sump (not shown) through spill port (D), meanwhile, produce negative pressure at T shape elbow-for-nozzle inner chamber, the oil-sucking hole (C) that is communicated with this negative cavity, drain mast (L2), annular drain pan (2) in draining hole (A) and the sealing cover all is in negative pressure state, can be with the oil gas desiring to overflow successively through the draining hole, drain mast, the oil-sucking hole of negative pressure generator, T shape elbow-for-nozzle inner chamber and spill port are to oil sump.
Claims (2)
1, a kind of sealing device for rotary shaft, be particularly useful for the sealing of the overhanging spindle nose of crankshaft of diesel engine, comprise flange (1) and coaxial with it fixedly connected gear (4), on the external cylindrical surface that the flange hub and the gear wheel hub of flange are formed, slidably suit fixing sealing cover (3), be provided with drain pan (2) in its hole, have draining hole (A) on this cell wall, it is characterized in that:
There is high pressure fuel source (P) in the machine oil house steward, the negative pressure generator that is communicated with high pressure fuel source (K), this generator is provided with oil inlet hole (B), the spill port concentric (D) with oil inlet hole, spill port passes to oil sump, the high-pressure oil pipe (L1) that is communicated with the oil inlet hole of high pressure fuel source and negative pressure generator, the oil-sucking hole of negative pressure generator (C) and the drain mast (L2) that is communicated with draining hole (A) on the sealing cover (3) thereof.
2, sealing device for rotary shaft according to claim 1 is characterized in that: negative pressure generator (K) comprises an elbow-for-nozzle (7), is installed in interior nozzle (5) of this elbow-for-nozzle and the sealing gasket (6) between junction plane thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229756 CN2182303Y (en) | 1993-11-21 | 1993-11-21 | Sealing device for rotation axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229756 CN2182303Y (en) | 1993-11-21 | 1993-11-21 | Sealing device for rotation axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182303Y true CN2182303Y (en) | 1994-11-09 |
Family
ID=33806562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93229756 Expired - Lifetime CN2182303Y (en) | 1993-11-21 | 1993-11-21 | Sealing device for rotation axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182303Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782374A (en) * | 2010-03-03 | 2012-11-14 | 索尤若驱动有限及两合公司 | Arrangement for contactlessly sealing off a rotatably mounted shaft from a housing, and gearing |
-
1993
- 1993-11-21 CN CN 93229756 patent/CN2182303Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782374A (en) * | 2010-03-03 | 2012-11-14 | 索尤若驱动有限及两合公司 | Arrangement for contactlessly sealing off a rotatably mounted shaft from a housing, and gearing |
| CN102782374B (en) * | 2010-03-03 | 2015-11-25 | 索尤若驱动有限及两合公司 | For making structure and the gear mechanism of rotatably mounted axle and shell noncontact seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU03 | Correction of utility model patent gazette |
Correction item: Patent agency Correct: Dalian Railway Patent Agency Number: 45 Page: 171 Volume: 10 Correction item: Agent Correct: Sun Zonglin Number: 45 Page: 171 Volume: 10 |
|
| ERR | Gazette correction |
Free format text: CORRECT: PATENT AGENCY AGENT; FROM: NONE NO TO: TIE ROAD, DALIAN CITY PATENT OFFICE SUN ZONGLIN |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |