CN109812364B - A kind of valve seat and spiral inclined in type nozzle - Google Patents
A kind of valve seat and spiral inclined in type nozzle Download PDFInfo
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- CN109812364B CN109812364B CN201910321339.4A CN201910321339A CN109812364B CN 109812364 B CN109812364 B CN 109812364B CN 201910321339 A CN201910321339 A CN 201910321339A CN 109812364 B CN109812364 B CN 109812364B
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Abstract
The invention discloses a kind of valve seats, vacuum tank is formed in the cavity wall of the nozzle bore in the first annular seal space, by the way that vacuum tank is arranged, when high velocity fluid media flows to the nozzle bore along first annular seal space cavity wall rotation, high velocity fluid media drives the air in vacuum tank to form cyclone, so that negative pressure state is formed, and during forming cyclone, air enters nozzle bore with fluid media (medium), ultimately forms misty ejection.In this process, the cyclone flow-disturbing of air in vacuum tank can take away the part inverted cone surface below the sphere after sphere contacts sealing with inverted cone surface or spherical cambered surface structure or the nubbin fluid media (medium) in spherical cambered surface structure, to avoid residual fluid medium, and then the dry and hard rear plug nozzle hole of impurity hardening is reduced, influence atomizing effect.
Description
Technical field
The present invention relates to nozzle technology fields, and in particular to a kind of valve seat and the spiral inclined in type nozzle using the valve seat.
Background technique
Critical component one of of the nozzle as EFI engine, the fine or not property by serious influence engine of its work
Energy.Existing nozzle is generally simple electromagnetic valve structure, if CN2016209634863 discloses a kind of urea nozzle, packet
Shell is included, is equipped with valve body in the shell, coil block is equipped between the valve body and shell, is equipped with adjusting sleeve in the valve body
And spool, the spool can slide in valve body, and spring fixed seat, the spring fixed seat and valve are equipped in the adjusting sleeve
Be equipped with elastic component between core, the front end of the spool is equipped with sphere across partition and nozzle, the sphere for whole sphere or
Part sphere, the spool are circumferentially with several spray orifices, and storage chamber, the partition are equipped between the spool, partition and nozzle
It is equipped with the connectivity slot for being connected to storage chamber with nozzle, the nozzle includes interconnected inverted cone surface structure and nozzle bore, described
Sphere is matched with inverted cone surface structure realizes the on and off of nozzle, and the spring fixed seat is stepped construction, front end
Diameter is less than rear end, and front end is cylindrical structure, and its rear end is not closed cylindrical structure, one end of the spring fixed seat
It is contacted with the other end of the end thereof contacts of spring, spring with spool.In above structure, partition can also be called the titles such as valve seat.
When electromagnetic coil assembly is powered, suction is generated, needle-valve is picked up, and corresponding sphere leaves the inverted cone surface or spherical cambered surface of spray orifice
Structure, nozzle is opened at this time, and the media such as fuel oil flow through the gap between sphere and inverted cone surface or spherical cambered surface structure through nozzle
Hole high speed ejection is formed misty.But in practice process, nozzle after long-time use, in sphere and inverted cone surface or
Spherical cambered surface structure contacts meeting nubbin oil liquid in inverted cone surface or spherical cambered surface structure below the sphere after sealing, easy to form
The a large amount of insoluble and Polymeric mesh stickum that is mutually related, which, which gradually accumulate, final is adhered to inverted cone surface or ball arc
In the structure of face, surface coking is formed, and finally blocking or Partial Blocking nozzle bore, influences spray effect.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of valve seats comprising: valve seat body；The valve seat body
It is inside formed with interconnected the first cylindrical cavity, vortex chamber, first annular seal space and nozzle bore, in the first annular seal space close to institute
It states and forms vacuum tank in the cavity wall of nozzle bore；At least one helicla flute is formed at the top of the lateral surface of the valve seat body, in institute
The lower end for stating helicla flute is communicated with diversion trench, and the vortex chamber is connected by least one deflector hole with the diversion trench, and
Meanwhile the angle between the central axes of deflector hole and the sagittal plane of first cylindrical cavity is greater than 0 degree.
Further, the vortex chamber is interconnected the first frustum chamber, the second cylindrical cavity, First chamber and the first back taper
Platform chamber；Wherein, the diameter of second cylindrical cavity is greater than the diameter of first cylindrical cavity.
Further, the helicla flute is 3, and 3 helicla flutes are uniformly arranged；The deflector hole is 6, and 6 deflector holes are equal
Even setting.
Further, the axial section that the deflector hole deviates first cylindrical cavity is arranged obliquely.
Preferably, the tangent line setting at an acute angle of the flow direction of the central axes of the deflector hole and fluid in diversion trench.
Further, the deflector hole includes two sections of interconnected cylindrical holes, wherein close to the cylinder of the diversion trench
The diameter in shape hole is greater than the diameter of the cylindrical hole far from the diversion trench.
Further, the nozzle bore is angularly disposed.
Further, the second inversed taper platform chamber, third cylindrical cavity are formed above first cylindrical cavity, the third cylindrical cavity
The break corner of cavity wall is arranged.
Further, the upper end of the lateral surface of the valve seat body is that pyramidal and pyramidal upper end chamfer is arranged.
The present invention also provides a kind of spiral inclined in type nozzles comprising above-mentioned valve seat.
The above technical solution of the present invention has the following advantages over the prior art:
(1) valve seat of the invention forms vacuum tank in the cavity wall of the nozzle bore in the first annular seal space, passes through
Vacuum tank is set, and when high velocity fluid media flows to the nozzle bore along first annular seal space cavity wall rotation, high-velocity fluid is situated between
Matter drives the air in vacuum tank to form cyclone, so that negative pressure state is formed, and during forming cyclone, air is with fluid
Medium enters nozzle bore together, ultimately forms misty ejection.In this process, the cyclone flow-disturbing of the air in vacuum tank being capable of band
Walk the inverted cone surface or residual in spherical cambered surface structure below the sphere after sphere contacts sealing with inverted cone surface or spherical cambered surface structure
Remaining part shunting body medium to avoid residual fluid medium, and then reduces the dry and hard rear plug nozzle hole of impurity hardening, influences to be atomized
Effect.
(2) what the present invention innovated be arranged on valve seat helicla flute, diversion trench and oblique cut-in type deflector hole, fluid media (medium) along
Helicla flute is rotated down flowing, to form the flow of fluid medium spun up around axle center, is forming rotating fluid medium flow field
During, fluid media (medium) enters diversion trench, and then cuts deflector hole, and fluid media (medium) imports simultaneously in multiple inclined in type deflector holes
Vortex chamber continues the eddy flow in vortex chamber by fluid media (medium), to enter nozzle bore in the moment that sphere is promoted, realizes mist
Change, effect is more preferable.In turn, vortex chamber is designed as the first interconnected frustum chamber, the second cylindrical cavity, First chamber and first
Inversed taper platform chamber, the diameter of second cylindrical cavity are greater than the diameter of first cylindrical cavity, and at this moment, eddy flow cavity space becomes larger, and
Cavity wall is round setting, in the space, by the eddy flow of fluid media (medium), when space becomes larger, realizes covert pressurization, that is, exists
When ball seal, same pressure is realized in the space of increase, at this moment, when sphere is promoted, fluid media (medium) moment is along sphere and the
The gap of one seal chamber cavity wall enters nozzle bore, and the capacity of large space avoids supplying fluid medium when sphere is promoted with sealing
Between section not in time, realize the function being in a disguised form pressurized by way of this expansion space, and then combine fluid media (medium) eddy flow
Mode enhances atomization.
(3) valve seat of the invention, the helicla flute are 3, and 3 helicla flutes are uniformly arranged；The deflector hole is 6,6
Deflector hole is uniformly arranged, and above-mentioned quantity is best setting.
(4) valve seat of the invention, the axial section that the deflector hole deviates first cylindrical cavity are arranged obliquely；Into one
Step, the setting at an acute angle of the flow direction of the central axes of the deflector hole and fluid media (medium) in diversion trench, above-mentioned setting will be maximum
The direction of fluid media (medium) rotation may be continued, reduce and hinder, and then to realize that quick eddy flow provides optimal structure.
(5) valve seat of the invention is further implemented in the same of eddy flow by the pre-large post-small setting of deflector hole two-part
When, while realizing the supply of fluid media (medium), and then guarantee pressurization, guarantee atomizing effect.
(6) valve seat of the invention, the nozzle bore is angularly disposed, which continues to cooperate the fluid media (medium) of eddy flow to spray mist
It is more preferable to change effect.
(7) spiral inclined in type nozzle of the invention reduces residual fluid medium to realize by using above-mentioned valve seat,
And then the dry and hard rear plug nozzle hole of impurity hardening is reduced, influence atomizing effect；Meanwhile passing through the expansion of fluid media (medium) cyclone space
It realizes pressurization, strengthens atomizing effect.
Detailed description of the invention
It, below will be in specific embodiment in order to illustrate more clearly of the technical solution in the specific embodiment of the invention
Required attached drawing does simple introduction, it should be apparent that, the accompanying drawings in the following description is some embodiment party of the invention
Formula without creative efforts, can also obtain according to these attached drawings for those of ordinary skill in the art
To other attached drawings.
Fig. 1 is the main view of the valve seat of the invention;
Fig. 2 is the birds-eye perspective of Fig. 1；
Fig. 3 is the A-A direction view of Fig. 2；
Fig. 4 is the B-B direction view of Fig. 2；
Fig. 5 is the perspective view of the valve seat of the invention；
Fig. 6 is the structural schematic diagram of spiral inclined in type nozzle of the invention；
Fig. 7 is the enlarged drawing of C in Fig. 6；
Appended drawing reference indicates in figure are as follows: 1- valve seat body；The first cylindrical cavity of 2-；3- first annular seal space；4- nozzle bore；5- is true
Empty slot；6- helicla flute；7- diversion trench；8- deflector hole；9- the first frustum chamber；The second cylindrical cavity of 10-；11- First chamber；12-
One inversed taper platform chamber；13- the second inversed taper platform chamber；14- third cylindrical cavity；15- location hole；16- spool；17- sphere；18- oil pipe body.
Specific embodiment
Clear, complete description is carried out to the contents of the present invention with reference to the accompanying drawing, it is clear that described embodiment is this
A part of the embodiment of invention, instead of all the embodiments.Occupy the embodiment in the present invention, those of ordinary skill in the art
Other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figs. 1-5, the present embodiment discloses a kind of valve seat comprising: valve seat body 1, the shape of the valve seat body 1
With no restrictions, as long as the function of realizing nozzle can be matched with the structure of nozzle, such as oil pipe body, in the present embodiment,
The preferred column structure of the valve seat body 1, is more highly preferred to cylindrical body；Interconnected first is provided in the valve seat body 1
Cylindrical cavity 2, vortex chamber, first annular seal space 3 and nozzle bore 4, in use, first cylindrical cavity 2 and sphere are sliding as far as possible
Dynamic contact, for guaranteeing that sphere spool when sliding does not generate skew, the vortex chamber is arranged in first cylindrical cavity 2
Lower section, shape is not particularly limited, can be regular shape, be also possible to irregular shape, such as cylinder chamber, spherical cavity
(non-integral), frustum chamber, the combination of a variety of cavitys etc., specifically, the vortex chamber is the first interconnected frustum chamber 9, the
Two cylindrical cavities 10, First chamber 11 and the first inversed taper platform chamber 12；Wherein, the first frustum chamber 9 and 2 phase of the first cylindrical cavity
Connection, the diameter of second cylindrical cavity 10 are greater than the diameter of first cylindrical cavity 2, the first inversed taper platform chamber 12 with it is described
First annular seal space 3 is connected；The shape of the First chamber 11 is the deformation of frustum chamber, i.e., cavity wall is spherical arc shape, so that
Fluid media (medium) reduces obstruction to the greatest extent when flowing to nozzle bore；The shape of the first annular seal space 3 is pyramidal or spherical cambered surface
Mesa-shaped, spherical cambered surface mesa-shaped are pyramidal deformation, i.e., cavity wall is spherical arc shape；The nozzle bore 4 directly with the first annular seal space 3
Connection, the shape of the nozzle bore 4 can be the cavernous structure of existing nozzle opening, and in the present embodiment, the nozzle bore 4 is circle
Cylinder, preferably oblique circular cylinder body；The first annular seal space 3 forms vacuum tank 5, the vacuum in the cavity wall of the nozzle bore 4
The shape of slot 5 is with no restrictions, it is preferred that the vacuum tank 5 is annular groove, and cross sectional shape is triangle, and two trough rims are phase
The other end of the vertical edge and bevel edge to connect, the bevel edge far from vertical edge is connect with the cavity wall of the nozzle bore 4；The valve seat
At least one helicla flute 6 formed at the top of the lateral surface of main body 1, the hand of spiral of the helicla flute 6 be simultaneously clockwise or
Simultaneously counterclockwise, the item number of the helicla flute 6 is not particularly limited, and preferably 3, is uniformly arranged, and the section of the helicla flute 6
Shape is not particularly limited, such as trapezoidal, triangle, circle, U-shaped, polygon, arc-shaped, is more highly preferred to the ladder of edge chamfer
Shape or U-shaped, to the top of the valve seat body 1, lower end is communicated with diversion trench 7, the diversion trench 7 for the upper end of the helicla flute
Around the circumferential setting of the valve seat body 1, cross sectional shape is not particularly limited, such as trapezoidal, triangle, circle, U-shaped, polygon
Shape, arc-shaped etc. are more highly preferred to the trapezoidal or U-shaped of edge chamfer, most preferably the structure of the U-shaped include bottom straight flange with
And the two sides straight flange being connected by camber line structure with bottom straight flange, the vortex chamber pass through at least one deflector hole 8 and the water conservancy diversion
Slot 7 is connected, and the shape of the deflector hole 8 is not particularly limited, it is preferable that the deflector hole 8 includes coaxially interconnected
Two sections of cylindrical holes, wherein the diameter close to the cylindrical hole of the diversion trench 7 is greater than the cylindrical hole far from the diversion trench 7
Diameter, the number of the deflector hole 8 is not particularly limited, preferably 6, is uniformly arranged, the central axes of each deflector hole 8
Angle between the sagittal plane of first cylindrical cavity 2 is greater than 0 degree, and further, the deflector hole 8 deviates first cylinder
The axial section of chamber 2 is arranged obliquely, and when referring to that deflector hole 8 tilts obliquely, central axes are not in times of first cylindrical cavity 2
On what axial section；Alternatively, the deflector hole 8 central axes and fluid diversion trench 7 and 8 connectivity part of deflector hole stream
The tangent line setting at an acute angle in dynamic direction；In order to be more easier to process, the second inversed taper platform chamber is formed above first cylindrical cavity 2
13, third cylindrical cavity 14, the break corner setting of the cavity wall of the third cylindrical cavity 14, in order to make fluid be more easier to flow into spiral shell
Spin slot 6, the upper end of the lateral surface of the valve seat body 1 are that pyramidal and pyramidal upper end chamfer is arranged.
Wherein, as preferred embodiment, the valve seat body 1, the first cylindrical cavity 2, first annular seal space 3, helicla flute
6, diversion trench 7, the first frustum chamber 9, the second cylindrical cavity 10, First chamber 11, the first inversed taper platform chamber 12, the second inversed taper platform chamber 13,
Third cylindrical cavity 14 is coaxially disposed.
It should be noted that taper type hole can also be formed between two sections of cylindrical holes of the deflector hole, the taper type
Hole also can be the drill bit self-assembling formation in processing with certain dimensioned；In order to preferably realize installation and add
Work is also provided with location hole 15 in the bottom of the valve seat body 1, and forms chamfering in the angled arrangement of valve seat, these
This is common machining mode, does not do repeat one by one herein.
Embodiment 2
As shown in Figure 6 and Figure 7, the present embodiment discloses a kind of spiral inclined in type nozzle comprising oil pipe body 18, the oil pipe
The lateral surface of the valve seat body 1 of the lower end and valve seat of body 18 is socketed, in this way, making fluid in 7 knot of helicla flute 6 and diversion trench
The inner wall for closing 18 lower end of oil pipe body forms the fluid channel of closure, and fluid is revolving fluid after 6 upper end of helicla flute enters
Turn of tidal stream more has impact force and stability when dynamic, wherein the valve seat is the valve seat construction in embodiment 1；Further include
Spool 16, the lower end of the spool 16 are connected with sphere 17, and the sphere 17 can choose the sphere of existing any shape, can
To be entire sphere, it is also possible to part sphere, the sphere 17 cooperates with the first annular seal space 3 realizes being sprayed for nozzle.
In addition, the other structures of nozzle, such as the electromagnetism promotion and dipping structure, oil inlet, oil circuit structure of shell, spool
It can be these structures of existing nozzle, this will not be repeated here.
It should be noted that the fluid media (medium) in the present invention can be the liquid fluids such as oil, water, urea liquid.The present invention
Nozzle be applicable to high-low pressure fluid media (medium).
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of valve seat characterized by comprising valve seat body；The first interconnected circle is formed in the valve seat body
Column chamber, vortex chamber, first annular seal space and nozzle bore form vacuum in the cavity wall of the nozzle bore in the first annular seal space
Slot；At least one helicla flute is formed at the top of the lateral surface of the valve seat body, is communicated with water conservancy diversion in the lower end of the helicla flute
Slot, the vortex chamber are connected by least one deflector hole with the diversion trench, and simultaneously, the central axes of deflector hole with it is described
Angle between the sagittal plane of first cylindrical cavity is greater than 0 degree；Valve seat is in use, the lower end of oil pipe body and the valve seat master of valve seat
The lateral surface of body is socketed, so that fluid combines the inner wall of oily bottom of the pipe to form the fluid of closure in the helicla flute and diversion trench
Being sprayed for nozzle, first cylindrical cavity and institute are realized in channel, the sphere cooperation that the first annular seal space is connect with spool lower end
State sphere sliding contact.
2. valve seat according to claim 1, which is characterized in that the vortex chamber is the first interconnected frustum chamber, the
Two cylindrical cavities, First chamber and the first inversed taper platform chamber；Wherein, the diameter of second cylindrical cavity is greater than first cylindrical cavity
Diameter.
3. valve seat according to claim 1 or 2, which is characterized in that the helicla flute is 3, and 3 helicla flutes are uniformly set
It sets；The deflector hole is 6, and 6 deflector holes are uniformly arranged.
4. valve seat according to claim 3, which is characterized in that the deflector hole deviates the axial section of first cylindrical cavity
It is arranged obliquely.
5. valve seat according to claim 3, which is characterized in that the central axes of the deflector hole and fluid are in diversion trench
The setting at an acute angle of the tangent line of flow direction.
6. valve seat according to claim 4, which is characterized in that the deflector hole includes two sections of interconnected cylinders
Hole, wherein being greater than the diameter of the cylindrical hole far from the diversion trench close to the diameter of the cylindrical hole of the diversion trench.
7. valve seat according to claim 6, which is characterized in that the nozzle bore is angularly disposed.
8. valve seat according to claim 7, which is characterized in that the second inversed taper platform chamber of the first cylindrical cavity top formation,
Third cylindrical cavity, the break corner setting of the cavity wall of the third cylindrical cavity.
9. valve seat according to claim 8, which is characterized in that the upper end of the lateral surface of the valve seat body be it is pyramidal,
And pyramidal upper end chamfer setting.
10. a kind of spiral inclined in type nozzle, which is characterized in that including valve seat as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321339.4A CN109812364B (en) | 2019-04-22 | 2019-04-22 | A kind of valve seat and spiral inclined in type nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321339.4A CN109812364B (en) | 2019-04-22 | 2019-04-22 | A kind of valve seat and spiral inclined in type nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109812364A CN109812364A (en) | 2019-05-28 |
| CN109812364B true CN109812364B (en) | 2019-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910321339.4A Active CN109812364B (en) | 2019-04-22 | 2019-04-22 | A kind of valve seat and spiral inclined in type nozzle |
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| Country | Link |
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| CN (1) | CN109812364B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087102B (en) * | 2021-12-03 | 2023-04-28 | 无锡威孚高科技集团股份有限公司 | Fuel injector |
| CN115013204A (en) * | 2022-06-20 | 2022-09-06 | 江苏大学 | Dual-fuel vortex nozzle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524856A1 (en) * | 1974-07-03 | 1976-01-22 | Plessey Handel Investment Ag | INJECTION NOZZLE FOR LIQUIDS |
| DE19712589C1 (en) * | 1997-03-26 | 1998-06-04 | Bosch Gmbh Robert | Valve needle for solenoid-operated fuel-injector of IC engine |
| EP1033488B1 (en) * | 1999-03-04 | 2005-10-19 | Delphi Technologies, Inc. | Fuel injector |
| US20130270368A1 (en) * | 2010-12-20 | 2013-10-17 | Toyota Jidosha Kabushiki Kaisha | Fuel injection valve |
| EP2657507A4 (en) * | 2010-12-20 | 2015-01-21 | Toyota Motor Co Ltd | Fuel injection valve |
| WO2012114480A1 (en) * | 2011-02-23 | 2012-08-30 | トヨタ自動車株式会社 | Fuel injection valve |
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2019
- 2019-04-22 CN CN201910321339.4A patent/CN109812364B/en active Active
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| CN109812364A (en) | 2019-05-28 |
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