CN108240253A - A kind of urea nozzle - Google Patents
A kind of urea nozzle Download PDFInfo
- Publication number
- CN108240253A CN108240253A CN201711425989.0A CN201711425989A CN108240253A CN 108240253 A CN108240253 A CN 108240253A CN 201711425989 A CN201711425989 A CN 201711425989A CN 108240253 A CN108240253 A CN 108240253A
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- China
- Prior art keywords
- armature
- shank
- elastic component
- channel
- hole
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to a kind of urea nozzles, by setting the gap formed between upper channel, armature internal channel, elastic component barrier structure through-hole, elastic component, shank traction piece activity space, shank traction piece through-hole and the side wall of shank and the lower channel, the spray orifice in jet orifice plate, above structure connects the complete channels to form urea liquid, the channel design is simple, urea liquid is made to pass through simply, different from the channel of the prior art, it needs through the circumferentially disposed spray orifice of spool, into storage chamber so that the phenomenon that solution circulation has some setbacks.
Description
Technical field
The present invention relates to motor exhaust post-processing technology fields, and in particular to a kind of urea nozzle.
Background technology
Selcetive Catalytic Reduction are selective catalytic reduction, and abbreviation SCR, SCR refer to be mounted on bavin
In petrol car exhaust system, the catalysis that the nitrogen oxides in diesel emission exhaust gas is catalysed and reduced into nitrogen and water is also original-pack
It puts, usually selects aqueous solution of urea as reducing agent.State IV, state V emission regulation in the limit value of exhaust contaminant and state III
Emission regulation is compared, and the limit value of exhausted pollutant of diesel engine (mainly particle and oxynitrides) reduces very much.In engine
Interior is difficult to reduce by two kinds of exhaust contaminants simultaneously, the requirement that engine emission is made to reach state IV, state's V emission regulations, therefore, SCR
System becomes the emission regulation demands for meeting country state IV, state V.
In SCR system, aqueous solution of urea is sprayed by urea nozzle in exhaust pipe, need to be determined according to engine operating condition situation
Amount injection, pulverization quality requirements are high, and response area can be made big, and reaction is abundant, and reduction effect is good.Traditional urea nozzle is all
Aqueous solution of urea mixed high-voltage air is discharged from micropore, and chemistry occurs with ingredients such as oxynitrides in tail gas into exhaust pipe
Reaction, there are the problem of emitted dose is inaccurate, injection is uneven, atomizing effect is poor.
To solve the above-mentioned problems, Chinese patent literature CN2016209634863 discloses a kind of nozzle, including shell
Body is equipped with valve body in the housing, and coil block is equipped between the valve body and housing, be equipped in the valve body adjusting sleeve and
Spool, the spool can slide in valve body, be equipped with spring fixed seat in the adjusting sleeve, the spring fixed seat and spool it
Between be equipped with elastic component, the front end of the spool across partition board and nozzle equipped with sphere, if the spool is circumferentially with a spray
Hole is equipped with storage chamber between the spool, partition board and nozzle, the partition board, which is equipped with, makes the connectivity slot that storage chamber is connected with nozzle, institute
Spring fixed seat is stated as stepped construction, point diameter is less than rear end, and front end is cylindrical structure, and its rear end is does not close
Cylindrical structure, one end of the spring fixed seat and the end thereof contacts of spring, the other end of spring are contacted with spool.
Although above-mentioned technology can improve atomizing effect, the limitation improved, meanwhile, the nozzle in above-mentioned technology
The jet orifice structure and spool of structure, especially spool, the difficulty in making of the structure equipped with storage chamber is larger between partition board and nozzle,
And residual night is easily retained using process, finally influence spray effect.
Invention content
For this purpose, in order to solve the above technical problems, the present invention provides a kind of urea nozzle, including：Housing and with institute
State the jet orifice plate that housing matches；Be provided with upper channel and lower channel in the housing, the upper channel and the lower channel it
Between be provided with armature accommodation space, be provided with armature in affiliated armature accommodation space, the armature, which is fixed on the armature, to be held
It receives in the side wall in space；In the housing, bobbin is provided with around the armature, coil is provided on the bobbin；
Armature internal channel and the shank traction piece activity space of the armature internal channel lower part are provided in the armature, in the rank
Elastic component is provided in iron internal channel, the elastic component that the lower end of the elastic component is connected to be arranged on shank traction piece is fixed
, through-hole and shank mounting hole are provided on the shank traction piece, the upper end of the armature internal channel is provided with elastic component
Barrier structure, and it is provided with through-hole in the elastic component barrier structure；Shank is fixed on the shank mounting hole, the spray orifice
Steel ball is placed on plate；Gap is formed between the side wall of the shank and the lower channel, the shank passes through the lower channel
It is matched with the steel ball and realizes spraying with reference to the spray orifice in the jet orifice plate.
Further, vortex piece accommodation space is provided between the lower end of the lower channel and the jet orifice plate, in the rotation
Vortex piece is provided in votex sheet accommodation space；The vortex on piece is provided with the needle bar hole, and the upper surface of the vortex piece is
Plane, the lower face of the vortex piece are formed with annular groove, are formed with from the needle bar hole circumferential radiation to the annular groove more
The wide bar-shaped trough in the narrow one end in one end, and the upper surface is provided with intercommunicating pore to the annular groove；On the upper surface
It is provided with the link slot for connecting the intercommunicating pore and the needle bar hole.
Preferably, the bar-shaped trough is angularly disposed.
Further, the vortex on piece is additionally provided with return port, and the return port extends through the rotation from the annular groove
The upper surface of votex sheet, meanwhile, it is provided with return flow line corresponding with the return port on the housing, the return flow line leads to
Return duct is crossed with reflux unit to be connected.
Further, the inverted cone surface structure being adapted with the steel ball is provided in the jet orifice plate.
Further, the inverted cone surface structure being adapted with the steel ball is provided in the jet orifice plate.
Further, described elastic component barrier structure one end is arranged in the armature internal channel, with leading in the armature
Road matches；And the elastic component barrier structure has the side fluting on through-hole and side wall.
Further, the shank mounting hole is arranged on the center of the shank traction piece, meanwhile, consolidate in the shank
The periphery for determining hole is circumferentially evenly arranged with through-hole.
Further, the mounting portion of elastic component fixed seat bottom is provided on the shank traction piece.
Further, the elastic component is spring.
The above technical solution of the present invention has the following advantages over the prior art：
(1) urea nozzle of the invention, by setting upper channel, armature internal channel, elastic component barrier structure through-hole, elasticity
The gap that is formed between part, shank traction piece activity space, shank traction piece through-hole and the side wall of shank and the lower channel,
Spray orifice in jet orifice plate, above structure connect the complete channels to form urea liquid, and the channel design is simple, leads to urea liquid
It crosses simply, different from the channel of the prior art, needs by the circumferentially disposed spray orifice of spool, into storage chamber so that solution circulates not
The phenomenon that smooth.
(2) urea nozzle of the invention is additionally provided with vortex piece, and the shank passes through the vortex piece by needle bar hole,
Meanwhile by setting link slot, intercommunicating pore, bar-shaped trough, making urea liquid by the gap between shank and lower channel and then leading to
It crosses link slot, intercommunicating pore, bar-shaped trough and enters spray orifice ejection, solution passes through the variation of above-mentioned channel, reduces pressure drop so that atomization
Effect reaches best.
(3) urea nozzle of the invention, by being provided with return port, is extracted remaining urea liquid in nozzle, keeps away
Exempt from solution low temperature crystallization, influence the use of next nozzle.
Description of the drawings
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 present invention
Formula for those of ordinary skill in the art, without creative efforts, can also be obtained according to these attached drawings
To other attached drawings.
Fig. 1 is the structure diagram of urea nozzle described in the embodiment of the present invention；
Fig. 2 is the front view of vortex piece described in the embodiment of the present invention；
Fig. 3 is the A-A direction views of Fig. 2；
Fig. 4 is the rearview of vortex piece described in the embodiment of the present invention；
Fig. 5 is the structure diagram of armature described in the embodiment of the present invention；
Fig. 6 is the stereogram of armature described in the embodiment of the present invention；
Fig. 7 is the stereogram of shank traction piece described in the embodiment of the present invention；
Fig. 8 is the structure diagram of elastic component fixed seat described in the embodiment of the present invention；
Fig. 9 is the stereogram of elastic component fixed seat described in the embodiment of the present invention；
Figure 10 is the front view of elastic component barrier structure described in the embodiment of the present invention；
Figure 11 is the B-B direction view of Figure 11；
Figure 12 is the vertical view of elastic component barrier structure described in the embodiment of the present invention；
Figure 13 is the front view of jet orifice plate described in the embodiment of the present invention；
Figure 14 is the C-C direction views of Figure 14；
Figure 15 is the rearview of jet orifice plate described in the embodiment of the present invention；
Reference numeral is expressed as in figure：1- housings；2- jet orifice plates；3- armature；4- shank traction pieces；5- elastic components are fixed
Seat；6- elastic component barrier structures；7- vortex pieces；9- steel balls；10- shanks；11- upper channels；12- lower channels；13- inner loop racks；
14- outer loop racks；17- return flow lines；18- return ducts；21- spray orifices；22- inverted cone surface structures；31- armature internal channels；32- shanks
Traction piece activity space；33- elastic components；34- type circle fixing grooves；35- type circles；41- shank mounting holes；42- mounting portions；51- cards
Access slot；52- clamping portions；53- curved portions；It slots 61- sides；71- needle bar holes；72- annular grooves；73- bar-shaped troughs；74- intercommunicating pores；
75- link slots；76- return ports.
Specific embodiment
Clear, complete description is carried out to present disclosure below in conjunction with the accompanying drawings, it is clear that described embodiment is this
The 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
The other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
The present embodiment provides a kind of urea nozzle, including：Housing 1 and the jet orifice plate 2 to match with the housing 1；
Upper channel 11 and lower channel 12 are provided in the housing 1, armature is provided between the upper channel 11 and the lower channel 12
Accommodation space, is provided with armature 3 in affiliated armature accommodation space, and the armature 3 is fixed on the side of the armature accommodation space
On wall；Bobbin is provided in the housing 1, around the armature 3, coil is provided on the bobbin；The armature 3
Armature internal channel 31 and the shank traction piece activity space 32 of 31 lower part of armature internal channel are inside provided with, in the armature
Elastic component 33 is provided in internal channel 31, the lower end of the elastic component 33 is connected to the elastic component being arranged on shank traction piece 4
Fixed seat 5 is provided with through-hole and shank mounting hole 41 on the shank traction piece 4, is set in the upper end of the armature internal channel 31
Elastic component barrier structure 6 is equipped with, and through-hole is provided in the elastic component barrier structure 6；Shank is fixed on the shank and fixes
On hole 41, steel ball is placed in the jet orifice plate 2；Gap is formed between the shank 10 and the side wall of the lower channel 12, institute
Shank 10 is stated to match with 12 steel balls 9 across the lower channel and realize spray with reference to the spray orifice 21 in the jet orifice plate 2
Mist.
Above-mentioned technical proposal is the core technology scheme of the present invention, by setting upper channel 11, armature internal channel 31, elasticity
6 through-hole of part barrier structure, elastic component 33, shank traction piece activity space 32,4 through-hole of shank traction piece and shank 10 with it is described
Spray orifice 21 on the gap that is formed between the side wall of lower channel 12, jet orifice plate 2, above structure connect to form the complete of urea liquid
Channel, the channel design is simple, and urea liquid is made to pass through simply, different from the channel of the prior art, is needed through spool circumferential direction
Spray orifice is set, into storage chamber so that the phenomenon that solution circulation has some setbacks.
Specifically, as shown in Figure 1, a kind of urea nozzle, including housing 1, the shape of the housing 1 is not particularly limited,
Sectional design may be used in its entirety, mechanically forms overall housing 1 again after each parts are installed, such as welds；
Upper channel 11 and lower channel 12 are provided in housing 1, is provided between the upper channel 11 and the lower channel 12
Armature accommodation space, is provided with armature 3 in affiliated armature accommodation space, and the armature 3 is fixed on the armature accommodation space
Side wall on, the shape of the armature 3 and the armature accommodation space are basically identical, and the armature accommodation space is made just to accommodate
Under the armature 3 to be best, as it can be seen in figures 5 and 6, the armature 3 is " bottle " type, in setting for the armature accommodation space
It puts there are many forms, the armature upper end is such as provided with type circle fixing groove 34, fixed affiliated armature 3 by type circle 35, institute
Stating type circle 35 can be round, can be rectangular either " mouth " shape, and the armature 3 is fixed in a word, best in order to reach
The upper and lower ends of affiliated armature 3 can also be fixed or used above two mode by the way of welding by effect；
Bobbin is provided in the housing 1, around the armature 3, coil is provided on the bobbin, in the present embodiment, institute
It states bobbin and includes inner loop rack 13 and outer loop rack 14, inside, coil, coil and control unit are provided between outer loop rack
It is connected；The shank traction piece activity of armature internal channel 31 and 31 lower part of armature internal channel is provided in the armature 3
Space 32, the shank traction piece activity space 32 are up and down for shank traction piece 4；In the armature internal channel 31
Elastic component 33 is provided with, the lower end of the elastic component 33 is connected to the elastic component fixed seat being arranged on the shank traction piece 4
5, the elastic component 33 drives the up and down of the shank traction piece 4 by compressing and stretching out, and solution can pass through institute
It states elastic component 33 and elastic component fixed seat 5 is reached on the shank traction piece 4, the 33 preferred spring of elastic component is more preferably multiple
Position spring；The mode that the elastic component fixed seat 5 is arranged on the shank traction piece 4 has very much, as Figure 7-9, the bullet
Property part fixed seat 5 include buckling groove 51, clamping portion 52 and pedestal, the elastic component 33 by can access slot 51 be connected to clamping portion
On 52, the shank traction piece 4 generally cylinder is provided with shank mounting hole 41 in center, and be provided at one end
The mounting portion 42 of indent, to install the bottom of the elastic component fixed seat 5, the shape of the mounting portion 42 is not limited, excellent
Select the cylinder of indent, the bottom of the elastic component fixed seat 5 is imbedded in the mounting portion 42, in order to 42 phase of mounting portion
Matching, is formed with the curved portion 53 of arc, the two by welding assembly together, meanwhile, the shank traction piece 4 is provided with logical
Hole, in order to passing through for solution, it is preferred that circumferentially uniformly set in the surrounding of interior, the described shank mounting hole 41 of the mounting portion 42
Through-hole is equipped with, when the mounting portion 42 is imbedded in the bottom of the elastic component fixed seat 5, to leak out through-hole, this less cannot be whole
Covering；The elastic component fixed seat 5 can also be provided with through-hole, which is used to fix the end of the shank 10, make described
When shank 10 moves, track is consistent, reduces the phenomenon that crooked；Elastic component blocking is provided in the upper end of the armature internal channel 31
Structure 6, and through-hole is provided in the elastic component barrier structure 6, the elastic barrier structure 6 is used for the elastic component 33
Fixed or stroke fixed function is played in upper end, in order to pass through solution and fix and install, other than setting through-hole, also sets
Side fluting 61 is equipped with, is not limited as the structure of the elastic component barrier structure 6, in the present embodiment, such as Figure 10-12 institutes
Show, the elastic component barrier structure 6 is two sections thin, intermediate thick cylinder, while forms cambered surface in the both ends side wall of side fluting 61
Design；Shank 10 is fixed on the shank mounting hole 41, and the shank 10 is solid, and steel ball is placed in the jet orifice plate 2
8；Form gap between the shank 10 and the side wall of the lower channel 12, the shank 10 pass through the lower channel 12 with it is described
Steel ball 8 matches and realizes spraying with reference to the spray orifice 21 in the jet orifice plate 2, in the present embodiment, as illustrated in figs. 13-15, institute
It states jet orifice plate 2 and is provided with the inverted cone surface structure 22 to match with the steel ball 8, and spray orifice 21 is arranged on the inverted cone surface structure 22
Central bottom end.
As an improvement embodiment, vortex piece is provided between the lower end of the lower channel 12 and the jet orifice plate 2
Accommodation space is provided with vortex piece 7 in the vortex piece accommodation space；The shape of the vortex piece 7 is held with the vortex piece
Receive space fitting, as in Figure 2-4, the needle bar hole 71 is provided on the vortex piece 7, is passed through to the shank 10,
The upper surface of the vortex piece 7 is plane, and the lower face of the vortex piece is formed with annular groove 72, circumferential from the needle bar hole 71
It is radiated to the annular groove 72 and is formed with the wide bar-shaped trough 73 in the narrow one end in a plurality of one end, in the present embodiment, the bar-shaped trough 73
It is 5, and is angularly disposed；The upper surface is provided with intercommunicating pore 74 to the annular groove 72；It is set on the upper surface
It is equipped with the link slot 75 for connecting the intercommunicating pore 74 and the needle bar hole 10.
As an improvement embodiment, it is additionally provided with return port 76 on the vortex piece 7, the return port 76 is from described
Annular groove 72 extends through the upper surface of the vortex piece 7, meanwhile, it is provided on the housing 1 corresponding with the return port 76
Return flow line 17, the return flow line 17 is connected by return duct 18 with reflux unit, and the reflux unit is arranged on outside,
It can be vacuum pump etc., not introduce herein.
In use, solution passes through upper channel 11,6 through-hole of elastic component barrier structure, elastic component 33, elastic component fixed seat 5 weeks
Gap between side, 4 through-hole of shank traction piece, shank traction piece activity space lower part, shank 10 and lower channel 12, link slot 75,
Intercommunicating pore 74, annular groove 72, bar-shaped trough 73, inverted cone surface structure 22, then have spray orifice 21 to spray；10 motion process of shank, coil
Energization makes armature 3 generate magnetism, and elastic component 33 is driven to compress, and elastic component fixed seat 5, shank traction piece 4, shank is driven to transport upwards
It is dynamic, and then solution sprays, after power-off, armature 3 is magnetic to disappear, and the elastic component 33 of compression is stretched out, and drives elastic component fixed seat 5, needle
Bar traction piece 4, shank move downward, and push down steel ball 8, block spray orifice 21；In order to which surplus solution crystallizes in nozzle, using finishing
Afterwards, by reflux unit, return duct 18, return flow line 17 and return port 76, remaining solution is extracted out using negative pressure.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to 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 the obvious variation thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of urea nozzle, which is characterized in that including：
Housing and the jet orifice plate to match with the housing；
Upper channel and lower channel are provided in the housing, armature is provided between the upper channel and the lower channel and accommodates sky
Between, armature is provided in affiliated armature accommodation space, the armature is fixed in the side wall of the armature accommodation space；Institute
It states in housing, be provided with bobbin around the armature, coil is provided on the bobbin；Armature is provided in the armature
Internal channel and the shank traction piece activity space of the armature internal channel lower part, are set flexible in the armature internal channel
Part, the lower end of the elastic component are connected to the elastic component fixed seat being arranged on shank traction piece, are set on the shank traction piece
Through-hole and shank mounting hole are equipped with, the upper end of the armature internal channel is provided with elastic component barrier structure, and the elastic component
Through-hole is provided in barrier structure；
Shank is fixed on the shank mounting hole, and steel ball is placed in the jet orifice plate；The shank and the lower channel
Gap is formed between side wall, the shank matches and with reference in the jet orifice plate across the lower channel with the steel ball
Spray orifice realizes spraying.
2. urea nozzle according to claim 1, which is characterized in that between the lower end of the lower channel and the jet orifice plate
Vortex piece accommodation space is provided with, vortex piece is provided in the vortex piece accommodation space；The vortex on piece setting is
Needle bar hole is stated, the upper surface of the vortex piece is plane, and the lower face of the vortex piece is formed with annular groove, from the needle bar hole
Circumferential radiation to the annular groove is formed with the wide bar-shaped trough in the narrow one end in a plurality of one end, and from the upper surface to the annular groove
It is provided with intercommunicating pore；The link slot for connecting the intercommunicating pore and the needle bar hole is provided on the upper surface.
3. urea nozzle according to claim 2, which is characterized in that the bar-shaped trough is angularly disposed.
4. the urea nozzle according to Claims 2 or 3, which is characterized in that the vortex on piece is additionally provided with return port, institute
The upper surface that return port extends through the vortex piece from the annular groove is stated, meanwhile, it is provided on the housing and described time
The corresponding return flow line of discharge orifice, the return flow line are connected by return duct with reflux unit.
5. urea nozzle according to claim 1 or 2, which is characterized in that be provided in the jet orifice plate and the steel ball
The inverted cone surface structure being adapted.
6. urea nozzle according to claim 4, which is characterized in that be provided in the jet orifice plate and mutually fitted with the steel ball
The inverted cone surface structure matched.
7. urea nozzle according to claim 1, which is characterized in that described elastic component barrier structure one end is arranged on described
In armature internal channel, match with the armature internal channel；And the elastic component barrier structure has through-hole and side wall
On side fluting.
8. urea nozzle according to claim 1, which is characterized in that the shank mounting hole is arranged on the shank traction
The center of part, meanwhile, circumferentially it is evenly arranged with through-hole on the periphery of the shank mounting hole.
9. urea nozzle according to claim 8, which is characterized in that be provided with elastic component on the shank traction piece and consolidate
The mounting portion of reservation bottom.
10. urea nozzle according to claim 1, which is characterized in that the elastic component is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425989.0A CN108240253B (en) | 2017-12-21 | 2017-12-21 | Urea nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425989.0A CN108240253B (en) | 2017-12-21 | 2017-12-21 | Urea nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108240253A true CN108240253A (en) | 2018-07-03 |
| CN108240253B CN108240253B (en) | 2020-01-21 |
Family
ID=62701169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711425989.0A Active CN108240253B (en) | 2017-12-21 | 2017-12-21 | Urea nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240253B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723524A (en) * | 2018-12-27 | 2019-05-07 | 宁波安创电子科技有限公司 | A kind of spiral vortex type urea nozzle |
| CN110005831A (en) * | 2019-04-26 | 2019-07-12 | 江苏巴腾科技有限公司 | A kind of valve seat and horizontal pitching in nozzle |
| FR3143668A1 (en) * | 2022-12-20 | 2024-06-21 | Faurecia Systemes D'echappement | Nozzle for reducing agent injection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1029175B1 (en) * | 1997-11-03 | 2003-03-26 | Günter Slowik | Method and injection nozzle for injecting fuel into the combustion chamber of an internal combustion engine |
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| FR3143668A1 (en) * | 2022-12-20 | 2024-06-21 | Faurecia Systemes D'echappement | Nozzle for reducing agent injection system |
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| CN108240253B (en) | 2020-01-21 |
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