CN203452959U - Lubricating nipple needle valve body - Google Patents
Lubricating nipple needle valve body Download PDFInfo
- Publication number
- CN203452959U CN203452959U CN201320486143.9U CN201320486143U CN203452959U CN 203452959 U CN203452959 U CN 203452959U CN 201320486143 U CN201320486143 U CN 201320486143U CN 203452959 U CN203452959 U CN 203452959U
- Authority
- CN
- China
- Prior art keywords
- valve body
- hole
- pressure
- needle valve
- oil
- 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
The utility model discloses a lubricating nipple needle valve body which comprises a spring mounting hole, a neck matching hole, an oil inlet, a pressure storage chamber, a fuel oil flowing middle hole, a sealing seat face, a spraying hole and a pressure chamber. The lubricating nipple needle valve body is characterized in that the lubricating nipple needle valve body is matched with a needle valve without a tail rod to effectively control oil backflow amount, the lubricating nipple needle valve body is suitable for a high-pressure system, the spraying hole and the pressure chamber are conical, spraying pressure is large, atomization is good, cost is reduced, reliability is improved, coatings can prolong the service life of the lubricating nipple needle valve body, and strength is enhanced.
Description
Technical field
The utility model belongs to dynamic power machine.
Background technique
Existing oil nozzle needle-valve body: 1, this needle-valve body coordinates the needle-valve with foot piece; 2, neck does not increase coating, very easily occurs because wearing and tearing cause recirculating oil quantity large, can not be for high-pressure fuel oil system, as common rail system etc.; 3, cylindrical pressure chamber, pressure chamber's volume is larger, and the evaporation of combustion process intermediate fuel oil produces more HC discharge; 4, spray orifice is straight hole, and under identical charge oil pressure, jet pressure is low compared with taper hole, is unfavorable for atomization, and simultaneously along with the increase of jet pressure, straight spray orifice is accelerated to wash away by impurity particle and becomes large, causes flow to become large; 5, sealing cone does not increase coating, within the time requiring will because of wearing and tearing cause poorly sealed, can not be for common rail system; 6, not being suitable for state more than five discharges.
Summary of the invention
The purpose of this utility model is to provide a kind of deficiency of evading existing scheme, is more suitable for high-pressure fuel oil system, as common rail system, can meet state five above emission requests, lightweight, reliability is strong, oil pressure is large, good seal, a kind of oil nozzle needle-valve body that atomization is good.
Technical solution of the present utility model is such, a kind of oil nozzle needle-valve body, comprise spring mounting hole, neck matching hole, oil inlet hole, pressure accumulating chamber, fuel oil circulation mesopore, sealed seat surface, spray orifice, pressure chamber, it is characterized in that oil nozzle needle-valve body intermediate throughholes, the structure in hole is that top is spring mounting hole (1), under spring mounting hole (1), be neck matching hole (2), under neck matching hole (2), be oil inlet hole (3), under oil inlet hole (3), be pressure accumulating chamber (4), pressure accumulating chamber (4) communicates with oil inlet hole (3), it under pressure accumulating chamber (4), is fuel oil circulation mesopore (5), under fuel oil circulation mesopore (5), be sealed seat surface (6), under sealed seat surface (6), be pressure chamber (8), there is spray orifice (7) both sides, pressure chamber (8).
Oil inlet hole (3) is opened in neck matching hole (2) side He pressure accumulating chamber (4) top.
Neck matching hole (2) has coating, and sealed seat surface (6) has coating.
Spray orifice (7) is cone shape hole.
Pressure chamber (8) is taper.
The utility model outstanding effect is compared with prior art, neck and sealing surface have coating to increase tightness, and pressure chamber is taper and less, improves atomization, and oil pressure is high, and pressure is large.
Accompanying drawing explanation
Fig. 1 is prior art oil nozzle needle-valve body schematic diagram.
Fig. 2 is the local technique of painting figure that amplifies in existing pressure chamber.
Fig. 3 is the utility model oil nozzle needle construction schematic diagram.
Fig. 4 is the local technique of painting figure that amplifies of the utility model needle-valve body.
In Fig. 1-Fig. 4, spring mounting hole (1), neck matching hole (2) oil inlet hole (3), pressure accumulating chamber (4), fuel oil circulation mesopore (5), sealed seat surface (6), spray orifice (7), pressure chamber (8).
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.1, this needle-valve body coordinates the needle-valve without foot piece; 2, neck increases coating, there will not be wearing and tearing to cause recirculating oil quantity large within the time requiring, and is applicable to high-pressure fuel oil system, as common rail system etc.; 3, taper pressure chamber, pressure chamber's volume is less, is conducive to reduce HC discharge; 4, spray orifice is taper hole, under identical charge oil pressure, can obtain higher jet pressure, is beneficial to atomization, is beneficial to mitigation system load, improves system reliability; 5, sealing cone increases coating, and coating hardness is slightly higher than needle-valve sealing surface coating hardness, within the time requiring, can not cause poorly sealedly because of wearing and tearing, is applicable to high-pressure fuel oil system, as common rail system etc.; 6, can be used in state more than five discharges.Oil nozzle needle-valve body intermediate throughholes, hole structure is wherein, top is spring mounting hole (1), under spring mounting hole (1), being neck matching hole (2), is pressure accumulating chamber (4) under neck matching hole (2), and side has oil inlet hole (3) to communicate with pressure accumulating chamber (4), it under pressure accumulating chamber (4), is fuel oil circulation mesopore (5), under fuel oil circulation mesopore (5), be sealed seat surface (6), sealed seat surface (6) dual-side has spray orifice (7), has pressure chamber (8) under sealed seat surface (6).Neck matching hole (2) has paint coatings, and sealed seat surface (6) has paint coatings.Spray orifice (7) is cone shape hole, and pressure chamber (8) are tapers.
This scheme oil nozzle needle-valve body good reliability, is more suitable for high pressure fuel and supplements, as steady in its rail, can meet the above emission request of state five.Oil nozzle needle valve structure compact and reasonable, advanced design is attractive in appearance.
Claims (5)
1. an oil nozzle needle-valve body, comprise spring mounting hole, neck matching hole, oil inlet hole, pressure accumulating chamber, fuel oil circulation mesopore, sealed seat surface, spray orifice, pressure chamber, it is characterized in that oil nozzle needle-valve body intermediate throughholes, the structure in hole is that top is spring mounting hole (1), under spring mounting hole (1), be neck matching hole (2), under neck matching hole (2), be oil inlet hole (3), under oil inlet hole (3), be pressure accumulating chamber (4), pressure accumulating chamber (4) communicates with oil inlet hole (3), it under pressure accumulating chamber (4), is fuel oil circulation mesopore (5), under fuel oil circulation mesopore (5), be sealed seat surface (6), under sealed seat surface (6), be pressure chamber (8), there is spray orifice (7) both sides, pressure chamber (8).
2. according to a kind of oil nozzle needle-valve body claimed in claim 1, it is characterized in that oil inlet hole (3) opens in neck matching hole (2) side He pressure accumulating chamber (4) top.
3. according to a kind of oil nozzle needle-valve body claimed in claim 1, it is characterized in that neck matching hole (2) has coating, sealed seat surface (6) has coating.
4. according to a kind of oil nozzle needle-valve body claimed in claim 1, it is characterized in that spray orifice (7) is cone shape hole.
5. according to a kind of oil nozzle needle-valve body claimed in claim 1, it is characterized in that pressure chamber (8) is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486143.9U CN203452959U (en) | 2013-08-10 | 2013-08-10 | Lubricating nipple needle valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486143.9U CN203452959U (en) | 2013-08-10 | 2013-08-10 | Lubricating nipple needle valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452959U true CN203452959U (en) | 2014-02-26 |
Family
ID=50132841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486143.9U Expired - Fee Related CN203452959U (en) | 2013-08-10 | 2013-08-10 | Lubricating nipple needle valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103842627A (en) * | 2011-09-16 | 2014-06-04 | 雷蒙德·A·汤 | Anti-cogging apparatus and methods for reducing cogging of rotating shaft |
-
2013
- 2013-08-10 CN CN201320486143.9U patent/CN203452959U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103842627A (en) * | 2011-09-16 | 2014-06-04 | 雷蒙德·A·汤 | Anti-cogging apparatus and methods for reducing cogging of rotating shaft |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20180810 |