CN210264996U - Leakage-proof plunger matching part matched with fuel injection pump - Google Patents
Leakage-proof plunger matching part matched with fuel injection pump Download PDFInfo
- Publication number
- CN210264996U CN210264996U CN201921011565.4U CN201921011565U CN210264996U CN 210264996 U CN210264996 U CN 210264996U CN 201921011565 U CN201921011565 U CN 201921011565U CN 210264996 U CN210264996 U CN 210264996U
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- CN
- China
- Prior art keywords
- plunger
- helicla flute
- spiral groove
- injection pump
- fuel
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- 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 - Fee Related
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Abstract
The utility model provides a supporting leak-proof plunger matching part that uses of injection pump, is equipped with helicla flute (L) on plunger (1), and helicla flute (L) lower extreme intercommunication plunger (1) middle part annular (H), contained angle (R) between helicla flute (L) and annular (H) is 40-42 degrees, and helicla flute (L) is 30mm around the helical pitch that plunger (1) rose, and helicla flute (L) upper end can be linked together with overflow hole (T) on plunger bushing (2). The axial distance (N) between the ring groove (H) in the middle of the plunger (1) and the flange plate (P) at the lower part of the plunger (1) is 23.5-25mm, the upper end of the spiral groove (L) is spaced from the top surface of the plunger (1) by 2-3mm, the width of the spiral groove (L) is 0.7-0.9mm, and the depth of the spiral groove (L) is 0.4-0.6 mm. The fuel stored in the spiral groove (L) is communicated with the overflow hole (T) on the plunger sleeve (2) and is discharged to the low-pressure cavity of the fuel injection pump outside the plunger matching part, so that the fuel is prevented from leaking downwards into the engine oil cavity of the diesel engine, the engine oil is prevented from being diluted by the fuel to influence the lubricating effect, the matching quality of the fuel injection pump is improved, and the performance and the service life of the diesel engine are improved.
Description
Technical Field
The utility model relates to a single cylinder diesel accessory especially relates to the plunger matching parts of injection pump.
Background
The plunger matching part is matched with the plunger in the fuel injection pump matched with the traditional single-cylinder diesel at home, the plunger sleeve is matched with the plunger, the plunger generally has a polished rod structure, the plunger sleeve and the plunger move relatively during matching, fuel oil leakage can occur in a gap between the plunger sleeve and the plunger, the fuel oil leaks into an oil cavity of the diesel, engine oil can be diluted, the lubricating effect is reduced, the performance of the fuel injection pump is influenced, the lubricating effect is poor, and the efficiency of the diesel is low. How to solve the inner leakage phenomenon of the plunger matching part is an important subject for researching and improving the performance of an oil injection pump and a diesel engine in the oil pump and oil nozzle industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims at improving the structure of plunger matching parts, put the fuel among the plunger matching parts and leak the machine oil chamber of diesel engine, improve the supporting quality of injection pump, improve the performance and the life of diesel engine.
The task of the utility model is accomplished like this: the anti-leakage plunger matching part matched with the fuel injection pump is designed, wherein a spiral groove is formed in a cylinder on the upper portion of a plunger, the lower end of the spiral groove is communicated with a ring groove in the middle of the plunger, the included angle between the spiral groove and the ring groove is 40-42 degrees, the ascending lead of the spiral groove around the cylinder on the upper portion of the plunger is 30mm, and the upper end of the spiral groove can be communicated with an overflow hole in a plunger sleeve. The overflow hole is a radial straight-through hole arranged on the side surface of the upper part of the plunger sleeve. The axial distance between the ring groove in the middle of the plunger and the flange plate at the lower part of the plunger is 23.5-25mm, the ring groove is communicated with the lower end of the spiral groove, the upper end of the spiral groove is spaced from the top surface of the plunger by 2-3mm, the width of the spiral groove is 0.7-0.9mm, and the depth of the spiral groove is 0.4-0.6 mm. The spiral groove arranged on the plunger stores fuel oil in a plunger sleeve and plunger assembling gap, the fuel oil is communicated with an overflow hole on the plunger sleeve through the spiral groove and is discharged into a low-pressure cavity of the fuel injection pump outside the plunger and barrel assembly, the fuel oil is prevented from being leaked downwards into an engine oil cavity of the diesel engine from the plunger and barrel assembly, the fuel oil is prevented from diluting the engine oil to influence the lubricating effect, the matching quality of the fuel injection pump is improved, and the performance of the diesel engine is improved.
Implement and experiment according to above-mentioned scheme, prove the utility model discloses a reasonable in design, simple structure has prevented effectively that the fuel from leaking the machine oil intracavity of diesel engine from the plunger matching parts, has improved the supporting quality of injection pump, has prolonged the life of diesel engine, has reduced the running cost simultaneously, has reached the anticipated purpose betterly.
Drawings
Fig. 1 is an external view of a plunger 1 according to the present invention;
FIG. 2 is a schematic diagram of the position of the plunger and barrel assembly in an oil injection state;
FIG. 3 is a schematic diagram of the plunger and barrel assembly in the oil feed position;
fig. 4 is a development view of the spiral groove L and the oblique oil groove X of the plunger 1.
In the figure, 1-plunger, 2-plunger sleeve; h-ring groove, J-oil inlet hole, L-spiral groove, N-axial distance, P-flange, R-included angle, T-overflow hole and X-oblique oil groove.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 2 and fig. 3, the utility model discloses a be equipped with helicla flute L on the cylinder of 1 upper portions of plunger, the annular H at 1 middle part of helicla flute L lower extreme intercommunication plunger, helicla flute L is 30mm around the helical pitch that 1 upper portion of plunger cylinder rises, and helicla flute L upper end can be linked together with overflow hole T on the plunger bushing 2. The overflow hole T is a radial straight-through hole arranged on the side surface of the upper part of the plunger sleeve 2. The axial distance N between the ring groove H in the middle of the plunger 1 and the flange plate P at the lower part of the plunger 1 is 23.5-25mm, and the ring groove H is communicated with the lower end of the spiral groove L.
Referring to fig. 4, the lower end of the spiral groove L is communicated with the annular groove H in the middle of the plunger 1, the upper end of the spiral groove L is spaced from the top surface of the plunger 1 by 2-3mm, the included angle R between the spiral groove L and the annular groove H is 40-42 degrees, the width of the spiral groove L is 0.7-0.9mm, and the depth of the spiral groove L is 0.4-0.6 mm.
The utility model discloses a set up helicla flute L on plunger 1, when plunger 1 rose in the plunger bushing, the injection pump jetted the fuel to the combustion chamber of diesel engine in, and when plunger 1 descended in the plunger bushing, the fuel got into plunger matching parts, and plunger 1 rose in the plunger bushing again, and continuous circulation is reciprocal, formed the pulsed and sprayed, and the inside remaining fuel of plunger matching parts is amassed and is existed in helicla flute L and the annular H of plunger 1. In the up-and-down movement process of the plunger 1, when the spiral groove L is communicated with the overflow hole T on the plunger sleeve 2, fuel oil accumulated in the spiral groove L and the annular groove H can be discharged out of the plunger matching part through the overflow hole T and enters the low-pressure cavity of the fuel injection pump, so that the fuel oil is prevented from being leaked downwards to the engine oil cavity of the diesel engine from the bottom of the plunger matching part, the fuel oil is prevented from diluting the engine oil, and the lubricating effect and the operation working condition of the diesel engine are improved.
The utility model discloses supporting with the injection pump, for the diesel engine installation is used, reduced the running cost of diesel engine, improved lubricated quality, saved the maintenance cost, prolonged the life of diesel engine, had good economic and social and extensive application prospect.
Claims (3)
1. The utility model provides a supporting leak-proof plunger matching part that uses of injection pump, is equipped with helicla flute (L) on plunger (1) upper portion cylinder, and helicla flute (L) lower extreme intercommunication plunger (1) middle part annular (H), and contained angle (R) between helicla flute (L) and annular (H) is 40-42 degrees, and helicla flute (L) is 30mm around the helical pitch that plunger (1) upper portion cylinder rises, and helicla flute (L) upper end can be linked together with overflow hole (T) on plunger bushing (2).
2. A leakage-proof plunger and barrel assembly adapted for use with an injection pump, as claimed in claim 1, wherein said spill port (T) is a radial through bore formed in the upper side of the plunger sleeve (2).
3. The leakage-proof plunger and barrel assembly matched with the oil injection pump according to claim 1, wherein the axial distance (N) between the annular groove (H) in the middle of the plunger (1) and the flange plate (P) at the lower part of the plunger (1) is 23.5-25mm, the annular groove (H) is communicated with the lower end of the spiral groove (L), the upper end of the spiral groove (L) is spaced from the top surface of the plunger (1) by 2-3mm, the width of the spiral groove (L) is 0.7-0.9mm, and the depth of the spiral groove (L) is 0.4-0.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011565.4U CN210264996U (en) | 2019-07-02 | 2019-07-02 | Leakage-proof plunger matching part matched with fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011565.4U CN210264996U (en) | 2019-07-02 | 2019-07-02 | Leakage-proof plunger matching part matched with fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210264996U true CN210264996U (en) | 2020-04-07 |
Family
ID=70046320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921011565.4U Expired - Fee Related CN210264996U (en) | 2019-07-02 | 2019-07-02 | Leakage-proof plunger matching part matched with fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210264996U (en) |
-
2019
- 2019-07-02 CN CN201921011565.4U patent/CN210264996U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20200702 |