CN201843715U - Oil delivery valve assembly - Google Patents
Oil delivery valve assembly Download PDFInfo
- Publication number
- CN201843715U CN201843715U CN2010205949890U CN201020594989U CN201843715U CN 201843715 U CN201843715 U CN 201843715U CN 2010205949890 U CN2010205949890 U CN 2010205949890U CN 201020594989 U CN201020594989 U CN 201020594989U CN 201843715 U CN201843715 U CN 201843715U
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- CN
- China
- Prior art keywords
- delivery valve
- oil delivery
- oil
- fuel tap
- pressure
- Prior art date
- 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
An oil delivery valve assembly relates to the technical field of oil injection pumps of marine diesels and comprises an oil delivery valve body and an oil delivery valve, wherein the inner bore of the oil delivery valve body and the excircle of the oil delivery valve are ground to be in fit with each other; the fitting clearance of the oil delivery valve body and the oil delivery valve ranges from 0.010 mm to 0.015 mm; the roughness requirement Ra of the fitting surface is 0.1 Mum, and the cylindricity is 0.002 mm; and the radial run-out amplitude of the opposite sealing conical surface in the oil delivery valve assembly ranges from 0.001 mm to 0.003 mm. Through the adoption of the rigid conical surface sealing technology, the inner bore of the oil delivery valve body and the excircle of the oil delivery valve are ground after abrading to be in fit with each other, so that the roughness and the cylindricity of the surface are improved; and the oil delivery valve assembly has the advantages of exquisite structure, small volume, good performance, low oil consumption and emission, strong reliability, long service life and the like, and can meet the requirements for the oil injection pumps of marine diesels.
Description
Technical field:
The utility model relates to the oil injection pump of marine diesel engine technical field, is specifically related to marine diesel engine and presses valve matching parts.
Background technique:
Injection Pump is the important composition parts of diesel engine, and its major function is regularly to supply with high-pressure diesel to oil sprayer according to certain rules, to obtain good atomization quality.Pressing valve matching parts is a secondary precision pair of injection pump assembly, but existing pressure valve matching parts volume is big, and poor performance, oil consumption height, discharging is many, reliability is low, working life is short, can not satisfy the requirement of marine diesel engine to oil spout pump pressure valve matching parts.
The model utility content:
The purpose of this utility model provides a kind of pressure valve matching parts, its delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability, advantages such as long service life can satisfy the requirement of marine diesel engine to oil spout pump pressure valve matching parts.
In order to solve the existing problem of background technique, the utility model is by the following technical solutions: it comprises presses fuel tap 1, pressure fuel tap body 2; Press fuel tap 1 endoporus to grind interworking with pressing fuel tap body 2 circles.
Described pressure fuel tap 1 and pressure fuel tap body 2 matching gaps are at 0.010-0.015mm, and the roughness of matching surface requires Ra0.1um, cylindricity 0.002mm, and the circular runout amplitude of pressing the relative sealing cone in the valve matching parts is at 0.001-0.003mm.
The utility model adopts rigidity conical surface seal technology, grinds after pressing fuel tap 1 and pressing fuel tap body 2 cylindricals by grinding and carries out interworking, improves its surface roughness and cylindricity; Have delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability, advantages such as long service life can satisfy the requirement of marine diesel engine to oil spout pump pressure valve matching parts.
Description of drawings:
Fig. 1 is a vertical profile structural representation of the present utility model.
Embodiment:
Referring to Fig. 1, this embodiment by the following technical solutions: it comprises presses fuel tap 1, presses fuel tap body 2; Press fuel tap 1 endoporus to grind interworking with pressing fuel tap body 2 circles.
Described pressure fuel tap 1 and pressure fuel tap body 2 matching gaps are at 0.010-0.015mm, and the roughness of matching surface requires Ra0.1um, cylindricity 0.002mm, and the circular runout amplitude of pressing the relative sealing cone in the valve matching parts is at 0.001-0.003mm.
This embodiment seals with the conical surface that cooperates of pressing the fuel tap body by pressing fuel tap 1, when the pump chamber oil pressure when pressing the fuel tap spring force with high-pressure oil pipe remnants oil pressure sum, press fuel tap 1 to be pressed on and press fuel tap body 2, prevent that diesel oil from refluxing, and the certain remaining oil pressure of maintenance high-pressure oil pipe, when the up pressure of plunger is oily, pump chamber is then greater than latter's sum, press the fuel tap 1 envelope conical surface to leave and press fuel tap body 2 fuel feeding paths to open, oil pressure and injection can reach ideal value, plunger begins oil return, and the pump chamber oil pressure descends rapidly, presses fuel tap 1 row to take a seat, sealing cone cuts off high-pressure oil passage, the high-pressure oil pipe oil pressure is reduced rapidly, and oil sprayer stops oil spout immediately, thereby has guaranteed the stable and reliability of oil sprayer oil spout.
This embodiment is with rigidity conical surface seal technology, press fuel tap 1 endoporus with press fuel tap external flexible cross to grind after the grinding carry out interworking, improve its surface roughness and cylindricity; Have delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability, advantages such as long service life can satisfy the requirement of marine diesel engine to oil spout pump pressure valve matching parts.
Claims (2)
1. pressure valve matching parts, it is characterized in that it it comprise and press fuel tap (1), press fuel tap body (2); Press fuel tap (1) endoporus and press fuel tap body (2) cylindrical lapping interworking.
2. pressure valve matching parts according to claim 1, the matching gap that it is characterized in that described pressure fuel tap (1) and pressure fuel tap body (2) is at 0.010-0.015mm, the roughness of matching surface requires Ra0.1um, cylindricity 0.002mm, the circular runout amplitude of pressing the relative sealing cone in the valve matching parts is at 0.001-0.003mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205949890U CN201843715U (en) | 2010-11-03 | 2010-11-03 | Oil delivery valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205949890U CN201843715U (en) | 2010-11-03 | 2010-11-03 | Oil delivery valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843715U true CN201843715U (en) | 2011-05-25 |
Family
ID=44038607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205949890U Expired - Fee Related CN201843715U (en) | 2010-11-03 | 2010-11-03 | Oil delivery valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518539A (en) * | 2011-12-20 | 2012-06-27 | 余姚市舒春机械有限公司 | Fuel injection pump assembly of medium-speed diesel engine |
-
2010
- 2010-11-03 CN CN2010205949890U patent/CN201843715U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518539A (en) * | 2011-12-20 | 2012-06-27 | 余姚市舒春机械有限公司 | Fuel injection pump assembly of medium-speed diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |