CN213656024U - Diesel engine buffer - Google Patents
Diesel engine buffer Download PDFInfo
- Publication number
- CN213656024U CN213656024U CN202022470425.2U CN202022470425U CN213656024U CN 213656024 U CN213656024 U CN 213656024U CN 202022470425 U CN202022470425 U CN 202022470425U CN 213656024 U CN213656024 U CN 213656024U
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- piston
- spring
- valve body
- diesel engine
- bushing
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Abstract
The utility model discloses a diesel engine buffer, include: the valve body is provided with an inlet which is communicated with a diesel engine fuel system; the bushing is fixedly arranged in the valve body and is in interference fit with the valve body; the piston is arranged in the bushing and is in clearance fit with the bushing; the outer side wall of the piston is provided with a groove; a slip ring assembly disposed within said recess, said slip ring assembly enabling said piston to slide within said bushing when said piston is pushed; a first spring disposed on a bottom surface of the piston; the valve cover is arranged at the top of the valve body; the limiting rod is arranged on the valve cover, and the rod body of the limiting rod is arranged in the valve body cavity. The utility model has the advantages that the pressure stabilizing function is achieved by arranging two groups of double-spring structures; and a piston-bushing-sliding ring component structure is arranged, so that the piston abrasion is reduced.
Description
Technical Field
The utility model relates to a valve field especially relates to a diesel engine buffer.
Background
The diesel engine buffer is used for a diesel engine fuel system of a ship, and pressure stability of a main pipe of the diesel engine fuel system of the ship is guaranteed. In the marine market, more and more diesel engines are used in the shipping industry at home and abroad in recent years. According to the current situation of transportation in China, the shipman pays more and more attention to the safety of the diesel engine, and the requirements on the service life, reliability, maintainability and impact resistance are higher and higher.
After a piston of the diesel engine buffer runs for a period of time, the piston and the inner surface of the valve body rub against each other, so that the piston is possibly abraded, the buffering effect is poor, and a medium of a fuel system risks leaking into the buffer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a diesel engine buffer can alleviate the wearing and tearing of piston, increase of service life reduces the leakage of fuel medium in to the buffer to shock resistance has been improved.
In order to achieve the above object, the utility model provides a diesel engine buffer, include:
the valve body is provided with an inlet which is communicated with a diesel engine fuel system;
the bushing is fixedly arranged in the valve body and is in interference fit with the valve body;
the piston is arranged in the bushing and is in clearance fit with the bushing; the outer side wall of the piston is provided with a groove;
a slip ring assembly disposed within said recess, said slip ring assembly enabling said piston to slide within said bushing when said piston is pushed;
a first spring disposed on a bottom surface of the piston;
the valve cover is arranged at the top of the valve body;
the limiting rod is arranged on the valve cover, and the rod body of the limiting rod is arranged in the valve body cavity.
Preferably, the piston further comprises an adjusting shim, and the adjusting shim is arranged in the piston and is positioned on the bottom surface of the piston.
Preferably, the first spring comprises a first inner spring and a first outer spring.
Preferably, the spring also comprises a second spring, and the second spring comprises a second inner spring and a second outer spring; the second outer spring is arranged at the top of the valve cover; the second internal spring is connected with the valve cover, and when the piston is pushed, the second spring can generate pressure on the valve cover.
Preferably, the valve cover is fixedly connected with the valve body through bolts.
Preferably, an asbestos-free gasket is arranged between the valve cover and the valve body to play a role in sealing.
Preferably, a red copper pad is arranged between the valve cover and the limiting rod to play a role in sealing.
The technical effects of the utility model:
(1) two groups of double-spring structures are arranged in the valve body, so that the shock resistance of the diesel engine buffer is improved;
(2) the piston-bush-sliding ring assembly structure is arranged, so that the piston can slide in the bush, and the abrasion of the piston is reduced;
(3) the design life is 30 years, and the reliability is good: mean Time Between Failure (MTBF) is more than or equal to 8000h, and maintainability is good: the mean time to failure (MTTR) is less than or equal to 1 h.
Drawings
Fig. 1 is the structure diagram of the diesel engine buffer provided by the utility model.
In the figure, 1-valve body, 2-adjusting shim, 3-sliding ring component, 4-piston, 51-first inner spring, 52-first outer spring, 61-second inner spring, 62-second outer spring, 7-bushing, 8-valve cover, 9-limiting rod.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a diesel engine buffer, include: the fuel injection valve comprises a valve body 1, wherein an inlet is formed in the valve body 1 and is communicated with a diesel engine fuel system; the bushing 7 is fixedly arranged in the valve body 1, and is in interference fit with the valve body 1; the piston 4 is arranged in the bushing 7 and is in clearance fit with the bushing 7, and a groove is formed in the outer side wall of the piston 4; the adjusting gasket 2 is arranged in the piston 4 and positioned on the bottom surface of the piston 4, and the opening pressure of the diesel engine buffer can be set by controlling the thickness of the adjusting gasket 4; the sliding ring component 3 is arranged in the groove to form a piston-bushing-sliding ring component structure, when the piston 4 is pushed, the sliding ring component 3 can enable the piston 4 to slide in the bushing 7 so as to reduce the abrasion of the piston, prolong the service life of the piston, play a role in sealing and reduce the leakage of a fuel medium into the buffer; the valve cover 8 is arranged at the top of the valve body 1 and fixedly connected with the valve body 1 through bolts, and an asbestos-free gasket is arranged between the valve cover 8 and the valve body 1 to play a role in sealing; gag lever post 9, gag lever post 9 set up bonnet 8 on, its body of rod arrange in 1 intracavity of valve body, gag lever post 9 can restrict opening of piston high, can say the piston dieback when piston 4 opens the take the altitude, bonnet 8 and gag lever post 9 between be equipped with the red copper pad, play sealed effect.
In the embodiment shown in fig. 1, the present invention includes a first spring and a second spring. The first spring is arranged on the bottom surface of the piston and comprises a first inner spring 51 and a first outer spring 52; the second outer spring comprises a second inner spring 61 and a second outer spring 62, and the second outer spring 62 is arranged on the top of the valve cover 8; the second internal spring 61 is connected to the valve cap 8, and generates a pressure on the valve cap 8 when the piston 4 is pushed. The utility model discloses set up upper and lower two sets of double spring structures, improved shock resistance, made opening pressure more stable.
When in work, a medium (usually fuel) of a diesel engine fuel system directly acts on the lower end of the piston 4 through the inlet; when the pressure of a medium of a diesel engine fuel system is larger than the pretightening force applied by the double springs of the diesel engine buffer, the pressure of the medium overcomes the spring forces of the first spring and the second spring to enable the piston 4 to move upwards; the pipeline space is enlarged, so that the pressure of a diesel engine fuel system is reduced, a buffering effect is achieved, and safety accidents caused by overhigh pressure of the diesel engine fuel system are prevented.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (7)
1. A diesel engine snubber, comprising:
the valve body is provided with an inlet which is communicated with a diesel engine fuel system;
the bushing is fixedly arranged in the valve body and is in interference fit with the valve body; the piston is arranged in the bushing and is in clearance fit with the bushing; the outer side wall of the piston is provided with a groove;
a slip ring assembly disposed within said recess, said slip ring assembly enabling said piston to slide within said bushing when said piston is pushed;
a first spring disposed on a bottom surface of the piston;
the valve cover is arranged at the top of the valve body;
the limiting rod is arranged on the valve cover, and the rod body of the limiting rod is arranged in the valve body cavity.
2. The diesel damper of claim 1 further comprising a spacer disposed within the piston on a bottom surface of the piston.
3. The diesel damper of claim 1 wherein the first spring comprises a first inner spring and a first outer spring.
4. The diesel damper of claim 1 further comprising a second spring, said second spring comprising a second inner spring and a second outer spring; the second outer spring is arranged at the top of the valve cover; the second internal spring is connected with the valve cover, and when the piston is pushed, the second spring can generate pressure on the valve cover.
5. The diesel engine bumper of claim 1, wherein the valve cover is fixedly connected with the valve body through bolts.
6. The diesel engine bumper of claim 1, wherein a non-asbestos gasket is disposed between the valve cover and the valve body for sealing.
7. The diesel engine bumper of claim 1, wherein a red copper pad is arranged between the valve cover and the limiting rod to play a role in sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470425.2U CN213656024U (en) | 2020-10-30 | 2020-10-30 | Diesel engine buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470425.2U CN213656024U (en) | 2020-10-30 | 2020-10-30 | Diesel engine buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213656024U true CN213656024U (en) | 2021-07-09 |
Family
ID=76704684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022470425.2U Active CN213656024U (en) | 2020-10-30 | 2020-10-30 | Diesel engine buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213656024U (en) |
-
2020
- 2020-10-30 CN CN202022470425.2U patent/CN213656024U/en active Active
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