CN203146184U - Needle valve structure capable of prolonging service life of oil nozzle - Google Patents
Needle valve structure capable of prolonging service life of oil nozzle Download PDFInfo
- Publication number
- CN203146184U CN203146184U CN 201320200221 CN201320200221U CN203146184U CN 203146184 U CN203146184 U CN 203146184U CN 201320200221 CN201320200221 CN 201320200221 CN 201320200221 U CN201320200221 U CN 201320200221U CN 203146184 U CN203146184 U CN 203146184U
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- CN
- China
- Prior art keywords
- needle valve
- needle
- oil storage
- oil nozzle
- valve
- 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 needle valve structure capable of prolonging the service life of an oil nozzle. The needle valve structure comprises a valve stem, wherein a plurality of annular oil storage grooves are uniformly distributed on the side surface of the valve stem. According to the structure, the needle valve structure provided by the utility model is simple and convenient to process, when the needle valve is processed, only the annular oil storage grooves are processed on the side surface of the valve stem, therefore the late processing and assembly of the needle valve and the needle valve body can not be affected. By the adoption of the oil nozzle produced by the needle valve structure provided by the utility model, in the use process, the annular oil storage grooves can store lubricating oil to play a lubricating role in the sliding process of the needle valve and the needle valve body, in addition, metal debris generated on the contact surface of the needle valve and the needle valve body can be collected into the annular oil storage grooves under the action of the lubricating oil so as to prevent the needle valve and the needle valve body from being further worn or stuck.
Description
Technical field
The utility model relates to the diesel injector field, is specifically related to a kind of oil nozzle needle valve structure in working life that prolongs.
Background technique
Because diesel engine power is big, moment of torsion is big, economic performance good, is widely used in engineering machinery and farm machinery.In the diesel engine, oil nozzle is that a processing is meticulous, the parts of manufacturing process complexity, and it mainly is made of the needle-valve that cooperatively interacts and needle-valve body.Because the injection pressure of oil nozzle is higher, cause fluid can't enter between needle-valve and the needle-valve body surface of contact, and in the using process of oil nozzle, needle-valve and needle-valve body slidably reciprocate fast continually, are lacking under the situation of oil lubrication, the fitting surface of needle-valve and needle-valve body very easily weares and teares, produce iron filings further wear and tear needle-valve and needle-valve body, had a strong impact on the working life of oil nozzle, when situation is serious, even directly cause needle-valve and needle-valve body stuck, make troubles for the use of diesel engine.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of oil nozzle needle valve structure in working life that prolongs is provided, processes simple and conveniently, increased the greasy property between needle-valve and the needle-valve body, avoid the appearance of stuck phenomenon, prolong oil nozzle working life.
Technical solution adopted in the utility model is:
Prolong the oil nozzle needle valve structure in working life, comprise the valve rod of needle-valve, the side of described valve rod is evenly distributed with a plurality of oil storage annular grooves.
The further improvement project of the utility model is at least 2 of the quantity of described oil storage annular groove.
The utility model further improvement project is, the cross section of described oil storage annular groove, and its bottom land is circular arc type.
The utility model further improvement project is that the circular arc bottom radius of described oil storage annular groove is in 0.5 ~ 1 millimeter scope.
The utility model further improvement project is that the width of rebate of described oil storage annular groove is in 0.7 ~ 1.5 millimeter scope.
The beneficial effects of the utility model are:
The first, the utility model structure is processed simple and conveniently, only needs process a plurality of oil storage circular grooves in the valve rod side when the processing needle-valve, does not influence post-production and the assembling of needle-valve and needle-valve body.
The second, the oil nozzle of producing with the utility model structure, in use, the oil storage circular groove not only can store up lubricant oil, in the sliding process of needle-valve and needle-valve body, play lubrication, and the metal fragment of needle-valve and the generation of needle-valve body surface of contact can also be collected in the oil storage annular groove under the effect of lubricant oil, prevent that further wearing and tearing or stuck phenomenon from appearring in needle-valve and needle-valve body.
Description of drawings:
Fig. 1 looks cross-sectional schematic for the utility model structure master.
Fig. 2 is the enlarged diagram of M structure among Fig. 1.
Embodiment:
In conjunction with illustrated in figures 1 and 2, the utility model comprises the valve rod of needle-valve 1, and the side of described valve rod 1 is evenly distributed with a plurality of oil storage annular grooves 3; At least 2 of the quantity of described oil storage annular groove 3 (in the implementation case, the number of oil storage annular groove 3 is 2); The cross section of described oil storage annular groove 3, its bottom land are circular arc type; The circular arc bottom radius of described oil storage annular groove 3 is (in the implementation case, the circular arc bottom radius of oil storage annular groove 3 is 0.75 millimeter) in 0.5 ~ 1 millimeter scope; The width of rebate of described oil storage annular groove 3 is (in the implementation case, the width of oil storage annular groove 3 is 0.9 millimeter) in 0.7 ~ 1.5 millimeter scope.
With the oil nozzle that the utility model structure is produced, in the set oil storage annular groove 3 in the valve rod side of needle-valve 1 lubricant oil is arranged; In the oil nozzle using process, between the surface of contact that needle-valve 1 and needle-valve body 2 cooperatively interact lube layer is arranged, increased the greasy property between needle-valve 1 and the needle-valve body 2, oil storage annular groove 3 can carry out foreign material with the small collection that produces between needle-valve 1 and the needle-valve body 2 in time by lubricant oil, prevent the surface of contact of small foreign material wearing and tearing needle-valve 1 and needle-valve body 2, avoid needle-valve 1 and needle-valve body 2 stuck phenomenon to occur, prolonged the working life of oil nozzle.
Claims (5)
1. prolong the oil nozzle needle valve structure in working life, comprise the valve rod of needle-valve (1), it is characterized in that the side of described valve rod (1) is evenly distributed with a plurality of oil storage annular grooves (3).
2. the needle valve structure in prolongation oil nozzle as claimed in claim 1 working life is characterized in that: 2 of the quantity of described oil storage annular groove (3) at least.
3. the needle valve structure in prolongation oil nozzle as claimed in claim 1 working life, it is characterized in that: the cross section of described oil storage annular groove (3), its bottom land are circular arc type.
4. the needle valve structure in prolongation oil nozzle as claimed in claim 3 working life, it is characterized in that: the circular arc bottom radius of described oil storage annular groove (3) is in 0.5 ~ 1 millimeter scope.
5. the needle valve structure in prolongation oil nozzle as claimed in claim 1 working life, it is characterized in that: the width of rebate of described oil storage annular groove (3) is in 0.7 ~ 1.5 millimeter scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200221 CN203146184U (en) | 2013-04-19 | 2013-04-19 | Needle valve structure capable of prolonging service life of oil nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200221 CN203146184U (en) | 2013-04-19 | 2013-04-19 | Needle valve structure capable of prolonging service life of oil nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146184U true CN203146184U (en) | 2013-08-21 |
Family
ID=48973716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320200221 Expired - Fee Related CN203146184U (en) | 2013-04-19 | 2013-04-19 | Needle valve structure capable of prolonging service life of oil nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146184U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372658A (en) * | 2018-12-10 | 2019-02-22 | 大连理工大学 | A kind of gas injector and its working method of gas engine |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
-
2013
- 2013-04-19 CN CN 201320200221 patent/CN203146184U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372658A (en) * | 2018-12-10 | 2019-02-22 | 大连理工大学 | A kind of gas injector and its working method of gas engine |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail 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: 20130821 Termination date: 20150419 |
|
| EXPY | Termination of patent right or utility model |