CN207538958U - A kind of pintle nozzle match-ing parts - Google Patents
A kind of pintle nozzle match-ing parts Download PDFInfo
- Publication number
- CN207538958U CN207538958U CN201721723086.6U CN201721723086U CN207538958U CN 207538958 U CN207538958 U CN 207538958U CN 201721723086 U CN201721723086 U CN 201721723086U CN 207538958 U CN207538958 U CN 207538958U
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- needle
- valve
- groove
- annular oil
- guide groove
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Abstract
The utility model discloses a kind of pintle nozzle match-ing parts, belong to fuel injector field, including needle-valve and needle-valve body, needle-valve is provided with guide surface, the pressure-bearing conical surface, needle-valve body sets needle-valve guide groove, the guide surface is equipped with several annular oil grooves, and adjacent annular oil groove is connected by line style oil guide groove, and the annular oil groove of bottom is communicated with the line style oil guide groove through the pressure-bearing conical surface；The groove depth of annular oil groove and line style oil guide groove gradually increases from bottom to up；Assemble pintle nozzle match-ing parts, the distance of the annular oil groove of guide surface the top apart from needle-valve guide groove slot bottom is more than zero.The beneficial effects of the utility model are：Increase the stabilization of the relative motion of needle-valve and needle-valve body；Good cooling and lubricating action are played to movement of the needle-valve in needle-valve body；The service life that effectively exclude break flour caused by needle-valve and needle-valve body are worn in time, increases needle-valve and needle-valve body reduces accident rate.
Description
Technical field
The utility model is related to fuel injector field, particularly a kind of pintle nozzle match-ing parts.
Background technology
Pintle nozzle match-ing parts are the important component parts of fuel injector, including needle-valve and needle-valve body.When atomizer works, needle-valve is in needle
It does in valve body and moves back and forth at a high speed, needle-valve and needle-valve body fit clearance are minimum, and precision is high, and the two can be caused in long-term work
Lack of lubrication causes frictional force to increase, and often increases annular oil groove in needle-valve and needle-valve body slidably contacting section in the prior art
Or helical form oil groove, lubrication and the purpose of cooling are played to the needle-valve of high-speed motion pair, improve the service life of atomizer.But in needle
Valve and needle-valve body form sundries after long-term work, after abrasion and remain in oil groove, cannot exclude；Spiral helicine oil groove is easily made
Discontinuity is caused into needle-valve and needle-valve body motion process.
Invention content
The purpose of this utility model, which is that, overcomes above-mentioned deficiency, provides a kind of pintle nozzle match-ing parts.
In order to achieve the above objectives, the utility model is implemented according to following technical scheme：
A kind of pintle nozzle match-ing parts, including needle-valve and needle-valve body, needle-valve is provided with guide surface, the pressure-bearing conical surface, needle-valve body setting needle
Valve guide groove, the guide surface are equipped with several annular oil grooves, and adjacent annular oil groove is connected by line style oil guide groove, bottom
Annular oil groove is communicated with the line style oil guide groove through the pressure-bearing conical surface；The groove depth of annular oil groove and line style oil guide groove is gradual from bottom to up
Increase；Assemble pintle nozzle match-ing parts, the distance of the annular oil groove of guide surface the top apart from needle-valve guide groove slot bottom is more than zero so that
After needle-valve moves upwards, the oil in line style oil guide groove and annular oil groove can flow out guide surface.
Further, the line style oil guide groove is parallel with needle-valve axis.
Further, the annular oil groove is ramp-like annular oil groove, and the upper end of each ramp-like annular oil groove is led by line style
Oil groove is connected with the lower end of the ramp-like annular oil groove of top.
Further, the inclined direction of two adjacent ramp-like annular oil grooves is opposite.
Further, the angle of the ramp-like annular oil groove and axis is between 30 ° to 60 °.
Further, the line style Oil Guide groove depth of bottom is 0.05 ~ 0.08 millimeter, the depth of the annular oil groove of the top
It is 0.18 ~ 0.20 millimeter.
Compared with prior art, the beneficial effects of the utility model are：Increase the steady of the relative motion of needle-valve and needle-valve body
It is fixed；Good cooling and lubricating action are played to movement of the needle-valve in needle-valve body；Needle-valve and needle-valve body mill are effectively excluded in time
Break flour caused by damage, reduces accident rate at the service life for increasing needle-valve and needle-valve body.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of needle-valve.
Fig. 3 is the left view of Fig. 2.
Reference numeral：1st, needle-valve, 2, needle-valve guide groove, 3, needle-valve body, 4, guide surface, 5, the pressure-bearing conical surface, 6, ramp-like annular
Oil groove, 7, line style oil guide groove.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings and specific embodiments, in the signal of this utility model
Property embodiment and explanation be used for explain the utility model, but be not intended to limit the scope of the present invention.
A kind of pintle nozzle match-ing parts as shown in Figs. 1-3, including needle-valve 1 and needle-valve body 3, needle-valve 1 is provided with guide surface 4 and pressure-bearing
The conical surface 5, needle-valve body 3 are provided with needle-valve guide groove 2.Guide surface 4 sets there are three ramp-like annular oil grooves 6 and four to be parallel to needle-valve
The line style oil guide groove 7 of 1 axis, the angle of ramp-like annular oil groove 6 and 1 axis of needle-valve is 45 °, and ramp-like annular oil groove 6 passes through line style
Oil guide groove is connected together about 7.The line style oil guide groove 7 of bottom connects the pressure-bearing conical surface 5；The pintle nozzle match-ing parts assembled, it is most upper
Slot bottom distance of the ramp-like annular oil groove 6 of side apart from needle-valve guide groove 2 is 1 millimeter.It is led from sequentially connected line style from bottom to up
The groove depth of oil groove 7 and ramp-like annular oil groove 6 successively increases, and the depth of the line style oil guide groove 7 of bottom is 0.05 millimeter, most upper
The depth of the ramp-like annular oil groove 6 of side is 0.20 millimeter, and dimensional tolerance is positive 0.01 millimeter.
The technical solution of the utility model is not limited to the limitation of above-mentioned specific embodiment, every skill according to the present utility model
The technology deformation that art scheme is made, each falls within the scope of protection of the utility model.
Claims (6)
1. a kind of pintle nozzle match-ing parts, including needle-valve and needle-valve body, needle-valve is provided with guide surface, the pressure-bearing conical surface, needle-valve body setting needle-valve
Guide groove, it is characterised in that：The guide surface is equipped with several annular oil grooves, and adjacent annular oil groove is connected by line style oil guide groove
Logical, the annular oil groove of bottom is communicated with the line style oil guide groove through the pressure-bearing conical surface；The groove depth of annular oil groove and line style oil guide groove
It gradually increases from bottom to up；Assemble pintle nozzle match-ing parts, the annular oil groove of guide surface the top apart from needle-valve guide groove slot bottom away from
From more than zero.
2. a kind of pintle nozzle match-ing parts according to claim 1, it is characterised in that：The line style oil guide groove is put down with needle-valve axis
Row.
3. a kind of pintle nozzle match-ing parts according to claim 1, it is characterised in that：The annular oil groove is ramp-like annular oil groove.
4. a kind of pintle nozzle match-ing parts according to claim 3, it is characterised in that：The inclination of two adjacent ramp-like annular oil grooves
Direction is opposite.
5. a kind of pintle nozzle match-ing parts according to claim 3, it is characterised in that：The angle of the ramp-like annular oil groove and axis
Between 30 ° to 60 °.
6. a kind of pintle nozzle match-ing parts according to claim 1, it is characterised in that：The line style Oil Guide groove depth of the bottom is
0.05 ~ 0.08 millimeter, the depth of the annular oil groove of the top is 0.18 ~ 0.20 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723086.6U CN207538958U (en) | 2017-12-12 | 2017-12-12 | A kind of pintle nozzle match-ing parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723086.6U CN207538958U (en) | 2017-12-12 | 2017-12-12 | A kind of pintle nozzle match-ing parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207538958U true CN207538958U (en) | 2018-06-26 |
Family
ID=62618212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721723086.6U Active CN207538958U (en) | 2017-12-12 | 2017-12-12 | A kind of pintle nozzle match-ing parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207538958U (en) |
-
2017
- 2017-12-12 CN CN201721723086.6U patent/CN207538958U/en active Active
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