CN206600224U - A kind of swirling flow ejector - Google Patents
A kind of swirling flow ejector Download PDFInfo
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- CN206600224U CN206600224U CN201720167973.3U CN201720167973U CN206600224U CN 206600224 U CN206600224 U CN 206600224U CN 201720167973 U CN201720167973 U CN 201720167973U CN 206600224 U CN206600224 U CN 206600224U
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- valve
- swirling flow
- flow ejector
- secured core
- armature
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Abstract
The utility model is related to a kind of swirling flow ejector, including tube-like envelope, injection cock valve, ball valve, valve rod, electromagnetism valve assembly and main spring；Shell is welded into by swirling flow ejector shell upper body, secured core, swirling flow ejector shell lower body and adjust pad, and ball valve, valve rod, main spring and damper assembly are provided with pipe；Injection cock valve is made up of valve seat and guiding parts, and valve seat and ball valve coordinate, and outer face and swirling flow ejector shell lower body are integrally molded, and guiding parts is interference fitted with swirling flow ejector lower body, and it is interior provided with pilot hole；Electromagnetism valve assembly can drive injection cock valve to control to flow through the liquid break-make of valve seat, and magnetic valve general name includes secured core, wound around coil and armature, and main spring is fixed on inside secured core；Valve rod can be slided relative to secured core along axis.Swirling flow ejector described in the utility model has cheap, simple in construction, processing technology simple, the advantage of magnetic valve and injection valve separable assembled, and it is good that it sprays accurate, spray atomization quality.
Description
Technical field
The utility model technical field of automobile parts, is related to a kind of swirling flow ejector, it is adaptable to state of enforcement IV and after
The aqueous solution of urea or diesel injection system of the Diesel engine of Abgasgesetz.
Background technology
With automobile diesel oilization and national Abgasgesetz it is increasingly strict, the emission problem for solving diesel engine seems extremely
Urgently.At present, global widely used SCR (SCR) technology is tackled with diesel particulate trap (DPF) technology
Heavy duty diesel engine emissions problem.The problem of presently, there are for SCR technology be existing urea injector atomizing particle size compared with
Greatly, mix poor with waste gas in blast pipe, so as to reduce the utilization rate of aqueous solution of urea；And the valve on existing urea injector
The body of rod causes spray orifice to block with easily forming urea crystals around injection hole body, thus to the removing rates of vehicle exhaust compared with
Difference.
The content of the invention
The purpose of this utility model is that for above-mentioned the deficiencies in the prior art that there is provided a kind of swirling flow ejector it is tied
Structure is simple, manufacturing cost is low, and atomizing effect is notable.
The purpose of this utility model is achieved through the following technical solutions, as follows in conjunction with illustrating：
A kind of swirling flow ejector, it is characterised in that：It is main by tube-like envelope, injection cock valve 21, ball valve 14, valve rod 12,
Electromagnetism valve assembly 5 and main spring 9 are constituted；
The shell is by swirling flow ejector shell upper body 4, secured core 11, swirling flow ejector shell lower body 15 and adjust pad 13
It is welded, ball valve 14, valve rod 12, main spring 9 and damper assembly is provided with liquid in pipe passage；
The injection cock valve 21 is made up of valve seat 3 and guiding parts 16, and the valve seat 3 coordinates with ball valve 14, and outer end
Face is welded as a whole with swirling flow ejector shell lower body 15, and the guiding parts 16 is interference fitted with swirling flow ejector shell lower body 15,
Provided with the pilot hole 16.2 that can be accommodated ball valve 14 and valve rod 12 and coordinate with ball valve 14 in it；
The electromagnetism valve assembly 5 is arranged on the top of injection cock valve 21 and is interference fitted with shell, and it can drive injection to open
Close valve 21 to control to flow through the liquid break-make of valve seat 3, electromagnetism valve assembly 5 includes secured core 11, wound around coil 10 and armature 8, institute
State secured core 11 to be fixed between swirling flow ejector shell upper body 4 and swirling flow ejector shell lower body 15, armature 8 is located at secured core
11 bottoms and multiple through holes are provided with, swirling flow ejector lift 28 is formed between armature 8 and secured core 11；
The main spring 9 is fixed on inside secured core 11；
The valve rod 12 can be slided relative to secured core 11 along axis 2.
The damper assembly is made up of retainer ring 22, damping spring 23 and supporter 24, and the retainer ring 22 is welded on valve
On bar 12, damping spring 23 is compressed between supporter 24 and retainer ring 22, and its upper end and the lower wall of supporter 24 are fixed, lower end
Fixed with the upper surface of retainer ring 22, the bottom end face annular solder of supporter 24 is on the lower surface of armature 8.
The wall of supporter 24 is provided with the peripheral through holes 25 that multiple permission fuel flow to valve seat 3.
Outer round recessed 3.3 and vortex groove 3.4 that the valve seat 3 includes spray-hole 3.1, vortex cavity 3.2, circulated for liquid,
It is tangent that transverse plane is shunk in the fuel flow communication path of the vortex groove 3.4 with round platform.
3-4 oil groove is provided with the outer wall of guiding parts 16.
The size of the pilot hole 16.2 of the guiding parts 16 meets ball valve 14 while liquid is revealed not at ball valve 14
Being capable of the free movement in pilot hole 16.2.
The armature 8 is cylindrical structural, and armature 8 and the middle part of fixed body 27, which are provided with, can accommodate the center through hole of valve rod 12
29, multiple through holes 26 for allowing fuel to flow to the valve seat 3 are provided with around center through hole 29.
The lower surface of armature 8 scribbles the coating of increase case hardness with the confined planes of secured core 11.
The upper and lower ends of the main spring 9 are respectively to rise by pin 6 and fixed body 27 is fixed, the lower end face ring of fixed body 27
Shape is welded as a whole, and top is integrated with the annular solder of valve rod 12.
The bottom of swirling flow ejector shell lower body 15 is provided with inside rectangular seal ring 20, the swirling flow ejector shell upper body 4
Equipped with filter element 19, outside is equipped with O-ring 18 and back-up ring 17.
Compared with prior art, the beneficial effects of the utility model are：Swirling flow ejector has cheap, structure simple
Single, processing technology is simple, the advantage of magnetic valve and injection valve separable assembled, and it is good that it sprays accurate, spray atomization quality.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model swirling flow ejector；
Fig. 2 is the amplification view of the electromagnetism valve assembly of swirling flow ejector；
Fig. 3 is the enlarged drawing of swirling flow ejector injection cock valve；
Fig. 4 is the enlarged drawing of the valve seat of swirling flow ejector；
Fig. 5 is the enlarged drawing of the guiding parts of swirling flow ejector.
In figure, the electromagnetism valve assembly 6. of 1. swirling flow ejector, 2. axis, 3. valve seat, 4. swirling flow ejector shell upper body 5. rises
The ball of 13. adjust pad of pin 7. electromagnet, 8. armature, 9. main spring, 10. wound around coil, 11. secured core, 12. valve rod 14.
The rectangular seal ring of 15. 16. guiding parts of swirling flow ejector shell lower body of valve, 17. 19. filter element of back-up ring 18.O shapes circle 20.
21. the fixed body of 26. through hole of injection cock valve 22. retainer ring, 23. damping spring, 24. supporter, 25. peripheral through holes 27.
28. the outer round recessed 3.4. vortex grooves of the center through hole 3.1. spray-hole 3.2. vortex cavities 3.3. of swirling flow ejector lift 29.
16.1. cylindrical trimming 16.2. pilot holes 16.3 are cylindrical.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
A kind of swirling flow ejector, it is characterised in that：It is main by tube-like envelope, injection cock valve 21, ball valve 14, valve rod 12,
Electromagnetism valve assembly 5 and main spring 9 are constituted.
As shown in Figure 1：1 represents whole swirling flow ejector, and axis 2 is its axis of symmetry.Liquid can be sprayed shape by valve seat 3
Into hollow spraying.Swirling flow ejector shell upper body 4, secured core 11, swirling flow ejector shell lower body 15 and the annular welds of adjust pad 13
It is connected together and has collectively constituted the shell of swirling flow ejector 1, ball valve 14, valve rod 12, the and of main spring 9 is provided with liquid in pipe passage
The damper assembly for preventing valve rod from bouncing.An electromagnetism valve assembly 5 being interference fitted with shell is assembled on the top of swirling flow ejector 1,
One injection cock valve 21 of lower weld of swirling flow ejector 1, injection cock valve 21 is driven by electromagnetism valve assembly 5, carrys out controlling stream
Liquid break-make through valve seat 3.The injection cock valve 21 is made up of valve seat 3 and guiding parts 16, and the valve seat 3 is matched somebody with somebody with ball valve 14
Close, and outer face is welded as a whole with swirling flow ejector shell lower body 15, the guiding parts 16 and swirling flow ejector shell lower body 15
Interference fit, provided with the pilot hole 16.2 that can be accommodated ball valve 14 and valve rod 12 and coordinate with ball valve 14 in it.
As shown in Figure 1：Electromagnetism valve assembly 5 includes a solenoid type electricity being made up of wound around coil 10 and secured core 11
Magnet 7 and positioned at the bottom of secured core 11 and the armature 8 of multiple through holes is provided with, electromagnet 7 is fixed on the outer of swirling flow ejector 1
The fixed position (electromagnetic force maximum position) of shell, when electromagnet 7 is powered, the electromagnetic force that electromagnet 7 is produced overcomes main spring 9
Spring force ball valve 14 is moved to open position from closed position.The magnetic force that the armature 8 is produced by the secured core 11 is inhaled
Draw the upper surface for moving to secured core 11.Wound around coil 10 is powered by external control unit outside and plastic packaging is inside electromagnet 7, Gu
Fixed core 11 is fixed in the middle of swirling flow ejector shell upper body 4 and swirling flow ejector shell lower body 15, and middle part is provided with can accommodate valve
Multiple through holes 26 for allowing fuel to flow to the atomizer 3 are provided with around the center through hole 29 of bar 12, center through hole 29.
As shown in Figure 1：Swirling flow ejector shell upper body 4, swirling flow ejector shell lower body 15, the annular solder of adjust pad 13 are one
The shell for having collectively constituted swirling flow ejector 1 is acted, electromagnetism valve assembly 5 is as an independent assembly and shell using interference fit
Mode combine.
As shown in Figure 1：Armature 8 is a part for moving assembly, and the moving assembly also includes valve rod 12 and ball valve 14.So as to
The emitted dose of valve seat 3 is flowed through according to the accurate control of known working method.
As shown in Figure 2：The armature 8 is cylindrical structural, and armature 8 and the middle part of fixed body 27, which are provided with, can accommodate valve rod 12
Center through hole 29, its limit be provided with around axis and the axis coaxle of swirling flow ejector 1 of valve rod 12, center through hole 29 it is multiple can
Fuel is allowed to flow to the through hole 26 of the valve seat 3, the total circulation area of through hole 26 is greater than the circulation area of swirling flow ejector 1.Institute
The upper and lower ends of main spring 9 are stated respectively to rise by pin 6 and fixed body 27 is fixed, the lower end surface annular solder of fixed body 27 in one,
Fixed body 27 is integrated with the upper weld of valve rod 12, and the diameter of fixed body 27 is identical with the internal diameter of center through hole 29.Therefore, magnetic valve is worked as
When 7 driving armature 8 are moved downward, armature 8 can be moved downward by the transfer tape ovable valve stem 12 of fixed body 27, so that spray
Penetrate switch valve unlatching.
The lower surface of armature 8 scribbles the coating of increase case hardness with the confined planes of secured core 11, and its purpose is increase
The service life of swirling flow ejector 1.
As shown in Figure 2：The clearance distance existed between the upper surface of secured core 11 and the lower surface of armature 8 is swirling flow ejector
Lift 28.Rise by pin 6 inside secured core 11 so that main spring 9 is fixed and is held in position inside secured core 11.Valve rod 12 can
Slided relative to secured core 11 along axis 2, therefore secured core 11 also acts as the effect of the top guide of valve rod 12.
As shown in Figure 2：One end of the main spring 9, which is securely fitted in, rises on pin 6, and the other end is securely fitted in fixed body 27
On.When injection cock valve 21 is closed, the clearance distance existed between the lower surface of armature 8 and the upper surface of secured core 11 is eddy spray
Emitter lift 28., can be according to the corresponding adjust pad of quiescent flow different choice of swirling flow ejector 1 when armature 8 is assembled
13 adjust swirling flow ejector lift 28.Such a assembling can cause swirling flow ejector 1 to can adapt to various displacement engines and need
Ask without increasing extra cost.
The damper assembly is made up of retainer ring 22, damping spring 23 and supporter 24, and the retainer ring 22 is inserted in valve rod
12, left with the lower surface of armature 8 after certain distance by its annular solder on valve rod 12, when its purpose is taken a seat for buffering ball valve 14
Knock-on.Damping spring 23 is compressed between supporter 24 and retainer ring 22, and its upper end and the lower wall of supporter 24 are fixed, lower end
Fixed with the upper surface of retainer ring 22, supporter 24 compress it is sturdy after by its annular solder on the lower surface of armature 8, supporter
24 walls are provided with the peripheral through holes 25 that multiple permission fuel flow to valve seat 3.Damping spring 23 act as buffer swirling flow ejector 1
Knock-on of the ball valve 14 when taking a seat.When swirling flow ejector 1 is turned on and off, damping spring 23 can reduce armature 8 with fixing
The collision reaction of iron core 11, valve seat 3 and ball valve 14.So as to reduce the secondary injection of swirling flow ejector 1.
As shown in Figure 2：Ball valve 14 is driven to be separated with valve seat 3 when electromagnetism valve assembly 5 is powered, fluid under pressure will flow through through hole
26.The wall of supporter 24 is provided with multiple peripheral through holes 25 for allowing fuel to flow to the valve seat 3.Liquid is through the wall of supporter 24
On peripheral through holes 25 flow to spray-hole 3.1 on valve seat 3, so as to spray the spraying to form a hollow taper.Electromagnetism valve assembly 5
The closed position of electromagnetic force driving ball valve 14 from the injection cock valve 21 of generation is moved to open position.
As shown in Figure 3：Valve seat 3 and the fitted seal of ball valve 14, the outer face of valve seat 3 is welded with swirling flow ejector shell lower body 15
It is integrated to ensure the sealed bottom of swirling flow ejector 1.Valve seat 3 controls the injection and termination of fuel oil together with ball valve 14.
As shown in Figure 3：Ball valve 14 cooperatively forms seal band with injection cock valve 21.Its along with fuel oil injection direction by
The initial tension of spring of main spring 9 promotes laminating valve seat 3 to realize the sealing of fuel oil.The binding face of valve seat 3 for cone and
With the shape complementary fit of ball valve 14.The outer round recessed 3.3 that valve seat 3 includes spray-hole 3.1, vortex cavity 3.2, circulated for liquid
With vortex groove 3.4, the fuel flow communication path of the vortex groove 3.4 and round platform contraction transverse plane are tangent.The round platform refers to ball valve
14 on valve seat 3 plane cut out it is cylindrical tangent.In the open position of injection cock valve 21, ball valve 14 is separated with valve seat 3, is passed through
The liquid of vortex groove 3.4 flows into the formation rotating vortex of vortex cavity 3.2 on valve seat 3, eventually through the shape of spray-hole 3.1 on valve seat 3
Into the spraying of a hollow taper.
As shown in Figure 4：The outer round recessed 3.3 of valve seat 3 is formed as the runner of liquid communication, and it is outer that vortex groove 3.4 is formed at this
The inside of round recessed 3.3.Vortex groove 3.4 is formed as tangent with the circular cone of the wall of vortex cavity 3.2.The path of vortex groove 3.4 can be
Tangent direction is formed with the cone wall, forms the intensity of vortex and the fuel injection angle formed is sprayed from spray-hole 3.1
Spend according to the width of vortex groove 3.4, cross-sectional area, oil circuit angle of inclination with and combinations thereof at least one and change.
Form the intensity of vortex and the fuel injection angle degree formed is sprayed from spray-hole 3.1 and changed according to the inclination angle of sloping portion.
As shown in Figure 4：By the liquid of vortex groove 3.4 according to the path the circular cone of the wall of vortex cavity 3.2 tangent line
Move in direction.Rotation is produced by tangential direction speed when urea enters vortex cavity 3.2, finally formed in vortex cavity 3.2
Vortex.In practical application, vortex groove 3.4 can form multiple.When forming multiple vortex grooves 3.4, these vortex grooves 3.4 can
With it is equidistant, be symmetrically formed in the circumferencial direction of the wall of vortex cavity 3.2.When the magnetic valve 7 of swirling flow ejector is powered off, electromagnetic force
Disappear, armature 8 is not by electromagnetic force only by the spring force of main spring 9.Spring force pushes down on armature 8, armature 8 with ovable valve stem 12 to
Lower motion, ball valve 14 fits to form sealing surface with valve seat 3, and swirling flow ejector 1 stops injection.When magnetic valve 7 is powered, armature 8
The elastic force of main spring 9 is overcome by the attraction of electromagnetic force, armature 8 is moved upwards with ovable valve stem 12, and ball valve 14 departs from injection and opened
The valve seat 3 of valve 21 is closed, the spray-hole 3.1 that the liquid by pressurization is flowed through on valve seat 3, which sprays, forms hollow-cone spray.
As shown in Figure 5：The axis and the axis 2 of swirling flow ejector 1 for limiting the valve rod 12 by pilot hole 16.2 are coaxial, are oriented to
Valve rod 12 and ball valve 14 can be accommodated in hole 16.2 so as to form guiding, endoporus 16.2 must ensure liquid not with the fit dimension of ball valve 14
It can be leaked at ball valve and ball valve 14 can free movement；Cylindrical 16.3 are filled with swirling flow ejector shell lower body 15 using interference fit
Carry out fixed guide part 16 with being integrated；Cylindrical trimming 16.1 is the passage of liquid communication.The outer wall of guiding parts 16 is provided with
3-4 oil groove 21 can be reached at valve seat 3 so as to fuel oil.
As it was previously stated, a rectangular seal ring 20 is arranged on swirling flow ejector shell lower body 15, it is act as by with being adapted to
Device (not marking) coordinates to form sealing；One filter element 19 is assemblied in inside swirling flow ejector shell upper body 4, the filter element
19 can be filtered through the little particle impurity in the liquid of swirling flow ejector 1；One O-ring 18 and a back-up ring 17 are assemblied in whirlpool
The outside of stream injector shell upper body 4 is used to ensure that the connection of high pressure oil rail and swirling flow ejector 1 is sealed.
Above-mentioned swirling flow ejector has simple in construction and processing cost is low, and magnetic valve is individually designed with injection valve, combination dress
The advantage of complexity with reduction assembly technology, and very high accuracy of spray and stability can be realized in injection, mist of spraying
Change quality high.
Claims (10)
1. a kind of swirling flow ejector, it is characterised in that：Mainly by tube-like envelope, injection cock valve (21), ball valve (14), valve rod
(12), electromagnetism valve assembly (5) and main spring (9) are constituted；
The shell is by swirling flow ejector shell upper body (4), secured core (11), swirling flow ejector shell lower body (15) and adjust pad
(13) it is welded, ball valve (14), valve rod (12), main spring (9) and damper assembly is provided with liquid in pipe passage；
The injection cock valve (21) is made up of valve seat (3) and guiding parts (16), and the valve seat (3) coordinates with ball valve (14),
And outer face is welded as a whole with swirling flow ejector shell lower body (15), the guiding parts (16) and swirling flow ejector shell lower body
(15) it is interference fitted, provided with the pilot hole that can be accommodated ball valve (14) and valve rod (12) and coordinate with ball valve (14) in it
(16.2)；
The electromagnetism valve assembly (5) is arranged on injection cock valve (21) top and is interference fitted with shell, and it can drive injection to open
The liquid break-make that valve (21) control flows through valve seat (3) is closed, electromagnetism valve assembly (5) includes secured core (11), wound around coil (10)
With armature (8), the secured core (11) be fixed on swirling flow ejector shell upper body (4) and swirling flow ejector shell lower body (15) it
Between, armature (8) is located at secured core (11) bottom and is provided with multiple through holes, and whirlpool is formed between armature (8) and secured core (11)
Flow injector lift (28)；
It is internal that the main spring (9) is fixed on secured core (11)；
The valve rod (12) can be slided relative to secured core (11) along axis (2).
2. a kind of swirling flow ejector according to claim 1, it is characterised in that：The damper assembly by retainer ring (22),
Damping spring (23) and supporter (24) are constituted, and the retainer ring (22) is welded on valve rod (12), damping spring (23) compression
Between supporter (24) and retainer ring (22), the lower wall of its upper end and supporter (24) is fixed, lower end and retainer ring (22)
Upper surface is fixed, and the bottom end face annular solder of supporter (24) is on the lower surface of armature (8).
3. a kind of swirling flow ejector according to claim 2, it is characterised in that：Supporter (24) wall is provided with multiple
Fuel is allowed to flow to the peripheral through holes (25) of valve seat (3).
4. a kind of swirling flow ejector according to claim 1, it is characterised in that：The valve seat (3) includes spray-hole
(3.1), vortex cavity (3.2), the outer round recessed (3.3) and vortex groove (3.4) that circulate for liquid, the combustion of the vortex groove (3.4)
It is tangent that transverse plane is shunk in oil flow passages footpath with round platform.
5. a kind of swirling flow ejector according to claim 1, it is characterised in that：It is provided with guiding parts (16) outer wall
3-4 oil groove.
6. a kind of swirling flow ejector according to claim 5, it is characterised in that：The pilot hole of the guiding parts (16)
(16.2) size meets liquid, and not while ball valve (14) place is revealed, ball valve (14) can be in pilot hole (16.2) freely
Motion.
7. a kind of swirling flow ejector according to claim 1, it is characterised in that：The armature (8) is cylindrical structural, rank
The center through hole (29) of valve rod (12) can be accommodated by being provided with the middle part of iron (8) and fixed body (27), be provided with around center through hole (29)
Multiple through holes for allowing fuel to flow to the valve seat (3) (26).
8. a kind of swirling flow ejector according to claim 7, it is characterised in that：Armature (8) lower surface and fixed iron
Core (11) confined planes scribble the coating of increase case hardness.
9. a kind of swirling flow ejector according to claim 1, it is characterised in that：The upper and lower ends of the main spring (9) point
Unfixed with the pin that rises (6) and fixed body (27), fixed body (27) the lower end surface annular solder is integrated, top and valve rod
(12) annular solder is integrated.
10. a kind of swirling flow ejector according to claim 1, it is characterised in that：Under the swirling flow ejector shell lower body 15
Portion, which is provided with inside rectangular seal ring (20), the swirling flow ejector shell upper body (4), is equipped with filter element (19), and outside is equipped with O shapes
Enclose (18) and back-up ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167973.3U CN206600224U (en) | 2017-02-24 | 2017-02-24 | A kind of swirling flow ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167973.3U CN206600224U (en) | 2017-02-24 | 2017-02-24 | A kind of swirling flow ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206600224U true CN206600224U (en) | 2017-10-31 |
Family
ID=60147158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720167973.3U Active CN206600224U (en) | 2017-02-24 | 2017-02-24 | A kind of swirling flow ejector |
Country Status (1)
| Country | Link |
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| CN (1) | CN206600224U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894930A (en) * | 2017-02-24 | 2017-06-27 | 中国第汽车股份有限公司 | A kind of swirling flow ejector |
| CN110566388A (en) * | 2019-09-23 | 2019-12-13 | 南岳电控（衡阳）工业技术股份有限公司 | methanol ejector |
| CN112469891A (en) * | 2018-08-21 | 2021-03-09 | 天纳克汽车经营有限公司 | Injector fluid filter with upper and lower lip seals |
-
2017
- 2017-02-24 CN CN201720167973.3U patent/CN206600224U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894930A (en) * | 2017-02-24 | 2017-06-27 | 中国第汽车股份有限公司 | A kind of swirling flow ejector |
| CN112469891A (en) * | 2018-08-21 | 2021-03-09 | 天纳克汽车经营有限公司 | Injector fluid filter with upper and lower lip seals |
| CN112469891B (en) * | 2018-08-21 | 2022-05-10 | 天纳克汽车经营有限公司 | Injector fluid filter with upper and lower lip seals |
| CN110566388A (en) * | 2019-09-23 | 2019-12-13 | 南岳电控（衡阳）工业技术股份有限公司 | methanol ejector |
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