CN105114143A - Sealing oil seal for valve rod of diesel engine - Google Patents
Sealing oil seal for valve rod of diesel engine Download PDFInfo
- Publication number
- CN105114143A CN105114143A CN201510576600.7A CN201510576600A CN105114143A CN 105114143 A CN105114143 A CN 105114143A CN 201510576600 A CN201510576600 A CN 201510576600A CN 105114143 A CN105114143 A CN 105114143A
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- Prior art keywords
- sealing lip
- diesel engine
- sealing
- oil seal
- spring
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Abstract
The invention relates to a sealing oil seal for a valve rod of a diesel engine. The sealing oil seal comprises a sealing sleeve and a steel sheath, wherein the sealing sleeve is inserted in the steel sheath, and is a step-shaped sleeve tube provided with a small-diameter tube on the upper part and a large-diameter tube on the lower part; a first sealing lip and a second sealing lip are sequentially arranged in the small-diameter tube on the upper part of the sealing sleeve from top down, and a third sealing lip and a fourth sealing lip are sequentially arranged in the large-diameter tube on the lower part of the sealing sleeve from top down; annular grooves are formed in the upper end and the lower end of the sealing sleeve along an axial direction, and a first spring is arranged in the annular groove at each end; and a second spring is arranged outside the steel sheath in a sleeving manner. The first sealing lip is effectively dustproof, and the second sealing lip, the third sealing lip and the fourth sealing lip are effectively waterproof and oilproof; the first spring can enhance the tightness between the first sealing lip and the valve rod, and the tightness between the fourth sealing lip and a guide tube, so that the sealing effect is improved; the steel sheath and the sealing sleeve are installed in a matching manner by virtue of a boss and a groove, thus preventing the steel sheath from loosening and falling off; and the second spring is capable of increasing the connection tightness between the steel sheath and the sealing sleeve.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, be specifically related to a kind of oil sealing of good airproof performance.
Background technique
Diesel engine is that burning diesel oil is to obtain exergonic motor.The advantage of diesel engine is that moment of torsion is large, economic performance good.Working procedure and the petrol engine of diesel engine have many identical places, and each work cycle also experiences air inlet, compression, acting, exhaust four strokes.Cylinder of diesel engine covers and is provided with conduit, is furnished with valve stem mutually with conduit, and operationally, valve stem moves up and down diesel engine in conduit.Be firing chamber below cylinder head, each parts in top operationally need lubrication, owing to there being a certain amount of gap between conduit and valve stem, have lubricant oil when therefore working and enter firing chamber downwards, cause the comparatively high consumption of the machine oil of diesel engine, combustion chamber deposit is serious, and in exhaust, harmful matter increases; Exhaust in firing chamber also can enter through gap the machine oil that lubricate is polluted on cylinder head top.Existing oil sealing used for diesel engine is just provided with the firm sheath of stuffing box gland and outside, is directly enclosed within outside valve stem by stuffing box gland, and do not have concrete sealing lip and corresponding parts to carry out enhanced leaktightness, sealing effect is bad, easy leakage of oil, and dust-proof effect is bad.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of oil sealing of good airproof performance.
A kind of hermetic oil seal for diesel engine spiracle bar comprises stuffing box gland 1 and steel sheath 2, and stuffing box gland 1 is plugged in steel sheath 2, and stuffing box gland 1 is step-like sleeve pipe, and top is narrow tube, and bottom is large diameter tube;
Be provided with the first sealing lip 3 and the second sealing lip 4 in the narrow tube on stuffing box gland 1 top from top to bottom successively, in the large diameter tube of bottom, be provided with the 3rd sealing lip 6 and the 4th sealing lip 7 from top to bottom successively;
The top and bottom of stuffing box gland 1 all offer circular groove 8 vertically, are equipped with the first spring 9 in the circular groove 8 often held;
The outer cover of described steel sheath 2 is provided with the second spring 12.
Described first sealing lip 3 is C shape sealing lip.
Described second sealing lip 4 is K shape sealing lip.
The cross section at the two ends, middle part of described K shape sealing lip is spherical crown shape.
Described 3rd sealing lip 6 is semicircle sealing lip.
Described 4th sealing lip 7 is rectangular seal lip.
The end of described rectangular seal lip is arc-shaped.
The same radial direction of the inner cylindrical surface of described steel sheath 2 is provided with the bulge loop of one or more, and the same radial direction of the external cylindrical surface of stuffing box gland 1 is provided with the groove of one or more, the bulge loop of one or more and the groove fit of one or more.
Described second spring 12 is the cluster spring of major diameter spring and minor diameter spring coaxial package.
Advantageous Effects of the present invention embodies in the following areas:
1. the first sealing lip on stuffing box gland of the present invention can be effectively dust-proof, and the second sealing lip, the 3rd sealing lip and the 4th sealing lip can effective waterproof and grease proofing.
2. the first spring on stuffing box gland of the present invention can increase between the first sealing lip and valve stem, the 4th tightness degree between sealing lip and conduit, lift-off seal effect.
3. adopt boss and groove fit to install between steel sheath and stuffing box gland, prevent steel sheath from loosening and coming off.
4. the second spring on steel sheath adds the connection tightness of steel sheath and stuffing box gland, and structure is simple, rationally novel in design, and low cost of manufacture is safe and reliable, economical and practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is using state figure of the present invention.
Sequence number in upper figure: stuffing box gland 1, steel sheath 2, first sealing lip 3, second sealing lip 4, spherical crown 5, the 3rd sealing lip 6, the 4th sealing lip 7, circular groove 8, first spring 9, boss 11, second spring 12, valve 13, valve guide bushing 14.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Embodiment
See Fig. 1, a kind of hermetic oil seal for diesel engine spiracle bar comprises stuffing box gland 1 and steel sheath 2, and stuffing box gland 1 is plugged in steel sheath 2, and stuffing box gland 1 is step-like sleeve pipe, and top is narrow tube, and bottom is large diameter tube.
Be provided with the first sealing lip 3 and the second sealing lip 4 in the narrow tube on stuffing box gland 1 top from top to bottom successively, in the large diameter tube of bottom, be provided with the 3rd sealing lip 6 and the 4th sealing lip 7 from top to bottom successively; First sealing lip 3 is C shape sealing lip; Second sealing lip 4 is K shape sealing lip, and the cross section at the two ends, middle part of K shape sealing lip is spherical crown shape; 3rd sealing lip 6 is semicircle sealing lip; 4th sealing lip 7 is rectangular seal lip, and the end of rectangular seal lip is arc-shaped.
The top and bottom of stuffing box gland 1 all offer circular groove 8 vertically, are equipped with the first spring 9 in the circular groove 8 often held;
The outer cover of steel sheath 2 is provided with the cluster spring that the second spring 12, second spring 12 is major diameter spring and minor diameter spring coaxial package.
The same radial direction of the inner cylindrical surface of steel sheath 2 is provided with the bulge loop of one or more, and the same radial direction of the external cylindrical surface of stuffing box gland 1 is provided with the groove of one or more, described bulge loop and groove fit.
See Fig. 2, during use, hermetic oil seal is sleeved on diesel engine spiracle bar, the first sealing lip 3 on stuffing box gland 1 and the second sealing lip 4 coordinate with the shaft of valve 13 respectively, 3rd sealing lip 6 and the 4th sealing lip 7 coordinate with valve guide bushing 14 respectively, effect prevents the lubricant oil of each parts indoor along valve stem flows into combustion, play effective seal action, decrease the consumption of lubricant oil, dust-proof effect can also be played in addition, ensure that the quality of lubricant oil, not contaminated, the project organization of each sealing lip all can increase sealing lip and area of contact between valve and valve guide bushing, lift-off seal effect.
Claims (9)
1. for a hermetic oil seal for diesel engine spiracle bar, comprise stuffing box gland (1) and steel sheath (2), stuffing box gland (1) is plugged in steel sheath (2), stuffing box gland (1) is step-like sleeve pipe, top is narrow tube, and bottom is large diameter tube, it is characterized in that:
Be provided with the first sealing lip (3) and the second sealing lip (4) in the narrow tube on stuffing box gland (1) top from top to bottom successively, in the large diameter tube of bottom, be provided with the 3rd sealing lip (6) and the 4th sealing lip (7) from top to bottom successively;
The top and bottom of stuffing box gland (1) all offer circular groove (8) vertically, are equipped with the first spring (9) in the circular groove often held (8);
The outer cover of described steel sheath (2) is provided with the second spring (12).
2. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, is characterized in that: described first sealing lip (3) is C shape sealing lip.
3. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, is characterized in that: described second sealing lip (4) is K shape sealing lip.
4. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 3, is characterized in that: the cross section at the two ends, middle part of described K shape sealing lip is spherical crown shape.
5. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, is characterized in that: described 3rd sealing lip (6) is semicircle sealing lip.
6. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, is characterized in that: described 4th sealing lip (7) is rectangular seal lip.
7. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 6, is characterized in that: the end of described rectangular seal lip is arc-shaped.
8. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, it is characterized in that: the same radial direction of the inner cylindrical surface of described steel sheath (2) is provided with the bulge loop of one or more, the same radial direction of the external cylindrical surface of stuffing box gland (1) is provided with the groove of one or more, the bulge loop of one or more and the groove fit of one or more.
9. a kind of hermetic oil seal for diesel engine spiracle bar according to claim 1, is characterized in that: the cluster spring that described second spring (12) is major diameter spring and minor diameter spring coaxial package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576600.7A CN105114143A (en) | 2015-09-11 | 2015-09-11 | Sealing oil seal for valve rod of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576600.7A CN105114143A (en) | 2015-09-11 | 2015-09-11 | Sealing oil seal for valve rod of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105114143A true CN105114143A (en) | 2015-12-02 |
Family
ID=54662228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510576600.7A Pending CN105114143A (en) | 2015-09-11 | 2015-09-11 | Sealing oil seal for valve rod of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105114143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908210A (en) * | 2021-01-27 | 2021-06-04 | 浙江经贸职业技术学院 | Education is with education propaganda equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2350526A1 (en) * | 1976-05-04 | 1977-12-02 | Freudenberg Carl | Sealing sleeve for engine valve push rod - has spring rings moulded into elastomeric body (SW 28.11.77) |
| US6202616B1 (en) * | 1999-02-17 | 2001-03-20 | Briggs & Stratton Corporation | Valve seal assembly for an internal combustion engine |
| US6412467B1 (en) * | 2001-04-24 | 2002-07-02 | Dana Corporation | Valve seal assembly module with spring and retainers |
| CN201574794U (en) * | 2009-11-19 | 2010-09-08 | 青岛开世密封工业有限公司 | Clamp spring pre-tightening type valve sealing element |
| CN203548920U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine shaft sleeve oil seal |
| CN203548919U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine oil seal high in strength and good in wear resistance |
| CN203571029U (en) * | 2013-11-25 | 2014-04-30 | 芜湖市鸿坤汽车零部件有限公司 | Dustproof sealing gasket for oil seal |
| CN204002967U (en) * | 2014-06-10 | 2014-12-10 | 无锡恩福油封有限公司 | Valve oil seal |
| CN204984523U (en) * | 2015-09-11 | 2016-01-20 | 安徽全柴动力股份有限公司 | A sealed oil blanket for diesel engine valve pole |
-
2015
- 2015-09-11 CN CN201510576600.7A patent/CN105114143A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2350526A1 (en) * | 1976-05-04 | 1977-12-02 | Freudenberg Carl | Sealing sleeve for engine valve push rod - has spring rings moulded into elastomeric body (SW 28.11.77) |
| US6202616B1 (en) * | 1999-02-17 | 2001-03-20 | Briggs & Stratton Corporation | Valve seal assembly for an internal combustion engine |
| US6412467B1 (en) * | 2001-04-24 | 2002-07-02 | Dana Corporation | Valve seal assembly module with spring and retainers |
| CN201574794U (en) * | 2009-11-19 | 2010-09-08 | 青岛开世密封工业有限公司 | Clamp spring pre-tightening type valve sealing element |
| CN203548920U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine shaft sleeve oil seal |
| CN203548919U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine oil seal high in strength and good in wear resistance |
| CN203571029U (en) * | 2013-11-25 | 2014-04-30 | 芜湖市鸿坤汽车零部件有限公司 | Dustproof sealing gasket for oil seal |
| CN204002967U (en) * | 2014-06-10 | 2014-12-10 | 无锡恩福油封有限公司 | Valve oil seal |
| CN204984523U (en) * | 2015-09-11 | 2016-01-20 | 安徽全柴动力股份有限公司 | A sealed oil blanket for diesel engine valve pole |
Non-Patent Citations (1)
| Title |
|---|
| 王炳权，朱航东等: "《中国机电产品大辞典》", 30 September 1999 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908210A (en) * | 2021-01-27 | 2021-06-04 | 浙江经贸职业技术学院 | Education is with education propaganda equipment |
| CN112908210B (en) * | 2021-01-27 | 2023-05-09 | 浙江经贸职业技术学院 | Education propaganda equipment is used in education |
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Application publication date: 20151202 |