CN216554049U - Valve oil seal device additionally arranged on cylinder head valve guide pipe of diesel engine - Google Patents
Valve oil seal device additionally arranged on cylinder head valve guide pipe of diesel engine Download PDFInfo
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- CN216554049U CN216554049U CN202120523366.2U CN202120523366U CN216554049U CN 216554049 U CN216554049 U CN 216554049U CN 202120523366 U CN202120523366 U CN 202120523366U CN 216554049 U CN216554049 U CN 216554049U
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- valve
- valve guide
- guide pipe
- diesel engine
- oil seal
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- Sealing With Elastic Sealing Lips (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a valve oil seal device additionally arranged on a cylinder head valve guide pipe of a diesel engine, which comprises the valve guide pipe, a framework, a spring and rubber, wherein the rubber is sleeved outside the valve guide pipe, one end of the rubber is fixed through the spring, and the other end of the rubber is fixed through the framework. The utility model has the beneficial effects that: the valve oil seal is additionally arranged on the valve guide pipe of the diesel engine cylinder head, so that the risk that engine oil enters a combustion chamber of the cylinder through the gap between the valve and the valve guide pipe and accumulates in the combustion chamber is fundamentally avoided.
Description
Technical Field
The utility model belongs to an oil seal device, and particularly relates to an additional valve oil seal device for a cylinder head valve guide pipe of a diesel engine.
Background
At present, a part of existing diesel engines (such as 16V240ZDA) of power stations are in clearance fit with a valve, and are not sealed, so that lubricating engine oil enters a cylinder combustion chamber through the gap between the valve and the valve guide, the engine oil is accumulated in the combustion chamber, the volume of the combustion chamber is reduced due to the accumulated engine oil, and the performance of the diesel engine is reduced due to the poor fuel atomization and other conditions during the operation of the diesel engine. Meanwhile, due to the incompressibility of the engine oil, serious accidents such as cylinder head fracture, connecting rod bending, crankshaft fracture and the like can be caused when the diesel engine is suddenly started, and the phenomenon is also called as 'oil hammer'.
To alleviate this problem, the currently widely used technical method is: the diesel engine is thrown periodically, and engine oil in the cylinder is discharged in the process of throwing. The operation process is very complicated, the workload is large, and the problem that engine oil enters a cylinder of the diesel engine cannot be fundamentally solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a valve oil seal device additionally arranged on a valve guide pipe of a cylinder head of a diesel engine, which can fundamentally solve the problem that engine oil enters a combustion chamber of a cylinder of the diesel engine along the valve guide pipe and a valve gap and is accumulated.
The technical scheme of the utility model is as follows: the utility model provides a diesel engine cylinder head valve guide installs valve oil blanket device additional, includes valve guide, skeleton, spring and rubber, and the rubber suit is outside at valve guide, and the one end of rubber is passed through the spring and is fixed, and the other end of rubber passes through the skeleton to be fixed.
The framework is of an L-shaped structure.
One end of the framework is embedded into the rubber.
The valve guide pipe is a long rod-shaped structure with a through hole in the middle.
The head of the valve guide pipe is provided with a wedge-shaped structure.
The valve guide pipe is provided with a ring groove.
The rubber is fluororubber.
The utility model has the beneficial effects that: the valve oil seal is additionally arranged on the valve guide pipe of the diesel engine cylinder head, so that the risk that engine oil enters a combustion chamber of the cylinder through the gap between the valve and the valve guide pipe and accumulates in the combustion chamber is fundamentally avoided.
Drawings
FIG. 1 is a schematic view of a valve oil seal device additionally installed on a valve guide pipe of a cylinder head of a diesel engine provided by the utility model;
fig. 2 is a schematic view of the mounting position of the valve oil seal.
In the figure, 1 valve guide, 2 frameworks, 3 springs, 4 rubbers, 5 valve stems, 11 wedge structures and 12 annular grooves.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
A valve oil seal device additionally arranged on a diesel engine cylinder head valve guide pipe comprises a valve guide pipe 1, a framework 2, a spring 3 and rubber 4, wherein the valve guide pipe 1 is of a long rod-shaped structure with a through hole in the middle, the head of the valve guide pipe 1 is provided with a wedge-shaped structure 11, and meanwhile, annular grooves 12 are formed, and the number of the annular grooves 12 in the embodiment is two; rubber 4 suit is outside valve guide 1, and the one end of rubber 4 is fixed through spring 3, and the other end of rubber 4 is fixed through skeleton 2. The framework 2 is of an L-shaped structure, and one end of the framework 2 is embedded into the rubber 4.
The utility model installs a lip type valve oil seal between a valve rod and a valve guide pipe of a diesel engine valve mechanism, the assembling form of the valve oil seal and the valve guide pipe is shown in figure 2, wherein the valve oil seal comprises a framework 2, rubber 4 and a spring 3. The rubber 4 is fluororubber.
The utility model can make small processing change on the upper part of the original valve guide pipe under the condition of not changing other parts of the valve mechanism, the structure can firmly fix the valve oil seal on the valve guide pipe, so that the valve oil seal and the valve rod have relative motion when the diesel engine works, and because the elasticity of the rubber sealing lip is larger, a large amount of engine oil can be isolated, thus playing a role of sealing. Wherein the mounting position of the valve oil seal is as indicated by the arrow in fig. 2.
Meanwhile, the sealing clearance between the valve and the valve oil seal forms a thinner lubricating layer based on the adhesion, cohesion and viscosity of the lubricant, so that a small amount of engine oil can flow into the clearance between the valve rod and the valve guide pipe when relative motion occurs, and the function of reducing the abrasion of the valve guide pipe can be achieved.
The utility model installs the lip type valve oil seal between the valve stem and the valve guide of the diesel engine valve actuating mechanism, thus fundamentally solving the problem that the engine oil enters the combustion chamber of the diesel engine cylinder along the valve guide and the valve clearance and causes the accumulation of the engine oil.
After the cylinder head of the No. 2 emergency diesel engine of the No. 07 factory building of the Qin factory is additionally provided with the valve oil seal for two months, the exhaust branch pipe of the No. 13 cylinder head of the No. 2 EDG is disassembled, the engine oil accumulation condition in the corrugated pipe is checked, and no oil stain is found. When the air valve oil seal is not installed, a large amount of engine oil is accumulated at the position. Therefore, the valve oil seal can effectively prevent engine oil from entering a combustion chamber of a cylinder through a gap between a valve and a valve guide pipe and accumulating in the combustion chamber.
Claims (7)
1. The utility model provides a diesel engine cylinder head valve guide installs valve oil seal device additional which characterized in that: the valve guide pipe comprises a valve guide pipe body, a framework, a spring and rubber, wherein the rubber is sleeved outside the valve guide pipe body, one end of the rubber is fixed through the spring, and the other end of the rubber is fixed through the framework.
2. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: the framework is of an L-shaped structure.
3. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: one end of the framework is embedded into the rubber.
4. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: the valve guide pipe is a long rod-shaped structure with a through hole in the middle.
5. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: the head of the valve guide has a wedge-shaped structure.
6. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: the valve guide pipe is provided with a ring groove.
7. The diesel engine cylinder head valve guide additionally-installed valve oil seal device as set forth in claim 1, wherein: the rubber is fluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523366.2U CN216554049U (en) | 2021-03-12 | 2021-03-12 | Valve oil seal device additionally arranged on cylinder head valve guide pipe of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523366.2U CN216554049U (en) | 2021-03-12 | 2021-03-12 | Valve oil seal device additionally arranged on cylinder head valve guide pipe of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216554049U true CN216554049U (en) | 2022-05-17 |
Family
ID=81537112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120523366.2U Active CN216554049U (en) | 2021-03-12 | 2021-03-12 | Valve oil seal device additionally arranged on cylinder head valve guide pipe of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216554049U (en) |
-
2021
- 2021-03-12 CN CN202120523366.2U patent/CN216554049U/en active Active
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