CN216714501U - Check valve structure for engine lubricating system - Google Patents
Check valve structure for engine lubricating system Download PDFInfo
- Publication number
- CN216714501U CN216714501U CN202123452785.0U CN202123452785U CN216714501U CN 216714501 U CN216714501 U CN 216714501U CN 202123452785 U CN202123452785 U CN 202123452785U CN 216714501 U CN216714501 U CN 216714501U
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- chamber
- crankshaft
- oil storage
- reed valve
- pressure
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a check valve structure for an engine lubricating system, which comprises a piston, a cam chamber, an upper rocker arm chamber, a crankcase, a cylinder and a crankshaft connecting rod mechanism, wherein the piston, the cam chamber, the upper rocker arm chamber, the crankcase and the cylinder are arranged in an engine. According to the utility model, the reed valve is arranged between the crankshaft chamber and the oil storage chamber, an oil path is led into the oil storage chamber from the crankshaft chamber in a one-way mode, the reed valve is arranged in the oil storage chamber, the reed valve can be conveniently arranged in the oil storage chamber by forming an acute angle between the mounting surface of the reed valve and the box closing surface, when a piston descends and the pressure in the crankshaft chamber is increased to be greater than a preset pressure, the pressure in the crankshaft chamber enables the reed valve to be opened, the pressure in the crankshaft chamber is further transmitted into the oil storage chamber, and meanwhile, return oil in the crankshaft chamber is also brought into the oil storage chamber through the pressure; when the piston moves upwards and the pressure in the crank chamber is reduced to a preset pressure, the reed valve is closed, so that the negative pressure of the crank chamber relative to other chambers is maintained, and the generated negative pressure can suck the lubricating oil in the upper rocker arm chamber into the crank chamber to form oil circuit circulation.
Description
Technical Field
The utility model relates to a one-way valve structure for an engine lubricating system.
Background
In an engine lubrication system, in order to achieve the purpose of oil return circulation, a check valve is usually required to be arranged in each section of oil line pipeline of the lubrication system. Because the structure between the crankshaft chamber and the oil storage chamber is special, the existing check valve is not convenient to install in an oil pipeline between the crankshaft chamber and the oil storage chamber, and the oil return effect of an engine lubricating system is poor easily.
Disclosure of Invention
The utility model provides a one-way valve structure for an engine lubricating system, which is simple in structure and suitable for being installed between a crankshaft chamber and an oil storage chamber, and aims to solve the problem of the one-way valve between the crankshaft chamber and the oil storage chamber of the existing engine lubricating system.
The technical scheme for solving the existing problems is as follows: a check valve structure for an engine lubricating system comprises a piston, a cam chamber, an upper rocker arm chamber, a crankcase, a cylinder and a crankshaft connecting rod mechanism, wherein the piston, the cam chamber, the upper rocker arm chamber, the crankcase, the cylinder and the crankshaft connecting rod mechanism are arranged in the crankcase, the crankcase is provided with a crankshaft chamber as an improvement, an oil storage chamber is arranged on the crankcase, an oil way is arranged between the crankshaft chamber and the oil storage chamber and is communicated with a reed valve in the oil storage chamber in a one-way mode from the crankshaft chamber, an installation surface for installing the reed valve is arranged in the oil storage chamber, the installation surface of the reed valve and a box closing surface form a certain angle, and the certain angle is an acute angle.
As a further improvement, the angle range is more than 10 degrees and less than 80 degrees.
As a further improvement, the angle is 60 degrees.
As a further improvement, the crankcase is provided with a case cover, and the reed valve is arranged and installed on the case cover.
Compared with the prior art, an oil way is arranged between the crankshaft chamber and the oil storage chamber, the reed valve is led into the oil storage chamber from the crankshaft chamber in a one-way mode, the reed valve is installed in the oil storage chamber, the reed valve can be conveniently installed in the oil storage chamber by enabling the installation surface of the reed valve to form an acute angle with the box closing surface, when a piston moves downwards and the pressure in the crankshaft chamber is increased to be larger than the preset pressure, the pressure in the crankshaft chamber enables the reed valve to be opened, the pressure in the crankshaft chamber is further transmitted into the oil storage chamber, and meanwhile, return oil in the crankshaft chamber is brought into the oil storage chamber through the pressure; when the piston moves upwards and the pressure in the crank chamber is reduced to a preset pressure, the reed valve is closed, so that the negative pressure of the crank chamber relative to other chambers is maintained, and the generated negative pressure can suck the lubricating oil in the upper rocker arm chamber into the crank chamber to form oil circuit circulation. The reed valve can be installed in the oil storage chamber and can be opened or closed according to the activity condition of the piston, so that the engine forms a circulating lubricating system.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the present invention mounted on a case cover.
Fig. 3 is a front view of the case cover of the present invention.
Fig. 4 is a cross-sectional view of fig. 3 taken along a centerline of the crankshaft.
Detailed Description
Referring to fig. 1-4, the present embodiment is a check valve structure for an engine lubrication system, including a piston 2, a cam chamber 3, an upper rocker arm chamber 1, a crankcase 6, a cylinder 13, and a crankshaft connecting rod mechanism 4 disposed in the crankcase 6, where the crankcase 6 is provided with a crankshaft chamber 5, the crankcase 6 is provided with an oil storage chamber 7, an oil path is disposed between the crankshaft chamber 5 and the oil storage chamber 7, a reed valve 8 is disposed between the crankshaft chamber 5 and the oil storage chamber 7, an inlet 22 of the oil path is disposed in the crankshaft chamber 5, and an outlet of the oil path is disposed in the oil storage chamber 7. The reed valve 8 is arranged in the oil storage chamber 7.
In order to facilitate the installation of the reed valve 8 and adapt to the normal work of the reed valve 8 in the oil storage chamber 7, an installation surface 11 for installing the reed valve 8 is arranged in the oil storage chamber 7, and the installation surface 11 of the reed valve 8 and a box closing surface form a certain angle which is an acute angle.
The angle range is larger than 10 degrees and smaller than 80 degrees. The angle is preferably 60 degrees.
The crankcase 6 is provided with a case cover 21, and the reed valve 8 is arranged and installed on the case cover 21.
When the piston 2 descends and the pressure in the crank chamber 5 rises, and the pressure is greater than 0.10MPa, the reed valve 8 opens, and the engine oil enters the oil storage chamber 7 from the crank chamber 5. As the pressure in the oil reservoir 7 rises, the oil enters the cam chamber 3 from the corresponding lubricating oil passage through the coil oil pipe 24, and lubricates the cam chamber 3. Oil mist enters the upper rocker arm chamber 1 through the tappet bores, providing lubrication to the upper rocker arm chamber 1.
When the piston 2 moves upwards, the pressure in the crankshaft chamber 5 is reduced, and when the pressure is less than 0.10MPa, the reed valve 8 is closed, oil gas in the upper rocker arm chamber 1 returns to the crankshaft chamber 5 through an oil return circuit, and a cycle is completed.
Claims (4)
1. A check valve structure for an engine lubricating system comprises a piston (2) arranged in an engine, a cam chamber (3), an upper rocker arm chamber (1), a crankcase (6), a cylinder (13) and a crankshaft connecting rod mechanism (4) arranged in the crankcase (6), wherein the crankcase (6) is provided with a crankshaft chamber (5), and the check valve structure is characterized in that: crankcase (6) on be equipped with oil storage chamber (7), crankcase (5) and oil storage chamber (7) between be equipped with the oil circuit from one-way reed valve (8) that let in oil storage chamber (7) of crankcase (5), oil storage chamber (7) in be equipped with the installation face of installation reed valve (8), the installation face and the face of closing a case of reed valve (8) become certain angle, certain angle be the acute angle.
2. The check valve structure for an engine lubricating system according to claim 1, characterized in that: the angle range is larger than 10 degrees and smaller than 80 degrees.
3. The check valve structure for an engine lubricating system according to claim 1, characterized in that: the angle is 60 degrees.
4. The check valve structure for an engine lubricating system according to claim 1, characterized in that: the crankcase (6) is provided with a box body cover (21), and the reed valve (8) is arranged and installed on the box body cover (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123452785.0U CN216714501U (en) | 2021-12-31 | 2021-12-31 | Check valve structure for engine lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123452785.0U CN216714501U (en) | 2021-12-31 | 2021-12-31 | Check valve structure for engine lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216714501U true CN216714501U (en) | 2022-06-10 |
Family
ID=81888399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123452785.0U Active CN216714501U (en) | 2021-12-31 | 2021-12-31 | Check valve structure for engine lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216714501U (en) |
-
2021
- 2021-12-31 CN CN202123452785.0U patent/CN216714501U/en active Active
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