CN206035606U - Integral urea measurement nozzle structure - Google Patents
Integral urea measurement nozzle structure Download PDFInfo
- Publication number
- CN206035606U CN206035606U CN201621057194.XU CN201621057194U CN206035606U CN 206035606 U CN206035606 U CN 206035606U CN 201621057194 U CN201621057194 U CN 201621057194U CN 206035606 U CN206035606 U CN 206035606U
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- CN
- China
- Prior art keywords
- valve rod
- hole
- shower nozzle
- mesopore
- swirl flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to an integral urea measurement nozzle structure, it includes the valve rod, sheath and helix sprinkler head, there is the sheath in the outside welding of helix sprinkler head's lower extreme, form solution storage cavity between the inner wall of helix sprinkler head's lower extreme outer wall and sheath, the orifice has been offered to lower tip at helix sprinkler head, it pegs graft to slide in helix sprinkler head's axial hole has the valve rod, the valve rod runner has been seted up along its axial top -down in the valve rod, the intercommunicating pore has been seted up on the helix sprinkler head of corresponding solution storage cavity position, be equipped with connecting hole down on the valve rod, inner and the outer end cooperation of connecting hole down of intercommunicating pore, connecting hole on having seted up on the valve rod, lower tip at the valve rod is equipped with outer sealing surface, link to each other through inner seal face between the upper end of the lower tip of shower nozzle mesopore hypomere and orifice, set up intercommunication solution storage cavity and solution swirling cavity's whirl hole on helix sprinkler head. The utility model has the advantages of easy control of manufacturing, crucial size and the tolerance be convenient for and performance are good.
Description
Technical field
This utility model is related to a kind of nozzle arrangements, and this utility model is more particularly, to a kind of monoblock type carbamide measuring jet
Structure.
Background technology
There are many exhaust gas aftertreatment systems for reducing I. C. engine exhaust pollutant, wherein, SCR in prior art
（Selective Catalytic Reduction）Urea injection system is used as the exhaust aftertreatment for reducing nox in exhaust
One of device, it has also become medium and heavy car meets the mainstream technology scheme of state IV and above Abgasgesetz.Its principle is by urinating
Plain solution is spurted in diesel exhaust gas, under high temperature and catalyst action, nox in exhaust is reduced into nitrogen and water
Discharge.Urea liquid is spurted in exhaustor by metering units, and metering units directly affect the transformation efficiency of nitrogen oxides, are
Determine discharge whether important device up to standard.
Carbamide metering units have two kinds of forms of pressure type and swirling flow atomizing mode, and due to being low-pressure fuel injection, pressure type is present
Atomization quality is poor, atomization concordance is difficult to ensure that, injection aperture is little and susceptible to plugging shortcoming, and existing swirling flow atomizing mode is most
Type of Welding is pressed using split, causes valve element to be difficult to ensure that with seat surface sealing, to processing and welding what positioning process had high demands
Problem.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided one kind is easy to processing and manufacturing, key
Size and the monoblock type carbamide measuring jet structure that tolerance is easily controllable and performance is good.
According to the technical scheme that this utility model is provided, the monoblock type carbamide measuring jet structure, it includes valve rod, shield
Set and swirl flow nozzle, have sheath in the lower end outside weldings of swirl flow nozzle, in the inwall of the lower end outer wall and sheath of swirl flow nozzle
Between form solution storage cavities, offer spray orifice in the bottom of swirl flow nozzle, axially along from upper in swirl flow nozzle
Under offer shower nozzle mesopore epimere, upper sealing hole, shower nozzle mesopore stage casing, lower sealing hole and shower nozzle mesopore hypomere, upper sealing hole
The equal diameters of diameter and lower sealing hole, the diameter in shower nozzle mesopore stage casing and the equal diameters of shower nozzle mesopore upper-lower section, in shower nozzle
The diameter with diameter greater than shower nozzle mesopore stage casing of hole epimere, the diameter with diameter greater than upper sealing hole in shower nozzle mesopore stage casing, in rotation
Sliding plug in the axial hole of stream shower nozzle has valve rod, forms solution temporary storage cavity, in valve rod between valve rod and shower nozzle mesopore epimere
Solution vortex chamber is formed between shower nozzle mesopore hypomere, and valve rod is coordinated with upper sealing hole and the sealing of lower sealing hole, edge in valve rod
Which and axially offer valve rod runner from top to bottom, valve rod runner is blind hole, and the eddy flow in corresponding solution storage cavities position sprays
Intercommunicating pore is offered on head, the outer end of intercommunicating pore is connected with solution storage cavities, is provided with lower connecting hole, lower connecting hole on valve rod
The inner and valve rod flow passage, the outer end of the inner and lower connecting hole of intercommunicating pore coordinates, the fragment position on correspondence shower nozzle mesopore
Valve rod on offer the upper connecting hole of connection valve rod runner and solution temporary storage cavity, be provided with external seal face in the bottom of valve rod,
It is connected by inner sealing surface between the bottom of hole hypomere and the upper end of spray orifice in the showerhead, inner sealing surface is matched somebody with somebody with external seal face
Close, offer the whirl hole of connection solution storage cavities and solution vortex chamber on swirl flow nozzle.
Preferably, the external seal face be it is upper big and under little outer conical surface, inner sealing surface is little for big and lower mouth suitable for reading
Internal conical surface.
Preferably, the intercommunicating pore is opened up along the radial direction of swirl flow nozzle.
Preferably, the number of the whirl hole is 4 ~ 6.
Preferably, the number of the upper connecting hole is 2 ~ 6 and their equal diameters.
Preferably, the port of export of the spray orifice is in open-like shape.
This utility model has the advantages that to be easy to processing and manufacturing, critical size and tolerance easily controllable and performance is good.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged diagram of sheath and swirl flow nozzle in this utility model.
Specific embodiment
With reference to specific embodiment, the utility model is described in further detail.
The monoblock type carbamide measuring jet structure, it includes valve rod 128, sheath 132 and swirl flow nozzle 133, sprays in eddy flow
133 lower end outside weldings have sheath 132, between the inwall of the lower end outer wall and sheath 132 of swirl flow nozzle 133 form molten
Liquid storage cavities 139, offer spray orifice 145 in the bottom of swirl flow nozzle 133, axially along from upper in swirl flow nozzle 133
And under offer in shower nozzle mesopore epimere 105A, upper sealing hole 151A, shower nozzle mesopore stage casing 105B, lower sealing hole 151B and shower nozzle
Hole hypomere 105C, the equal diameters of the diameter of upper sealing hole 151A and lower sealing hole 151B, the diameter of shower nozzle mesopore stage casing 105B
With the equal diameters of shower nozzle mesopore upper-lower section 105C, shower nozzle mesopore epimere 105A's is straight with diameter greater than shower nozzle mesopore stage casing 105B
Footpath, the diameter with diameter greater than upper sealing hole 151A of shower nozzle mesopore stage casing 105B are slided in the axial hole of swirl flow nozzle 133 and are inserted
Valve rod 128 is connected to, solution temporary storage cavity is formed between valve rod 128 and shower nozzle mesopore epimere 105A, in valve rod 128 and shower nozzle mesopore
Solution vortex chamber is formed between hypomere 105C, and valve rod 128 is coordinated with upper sealing hole 151A and the sealing of lower sealing hole 151B, valve rod
Offer valve rod runner 131 in 128 axially along from top to bottom, valve rod runner 131 is blind hole, in corresponding solution storage cavities
Intercommunicating pore 149 is offered on the swirl flow nozzle 133 of 139 positions, and the outer end of intercommunicating pore 149 is connected with solution storage cavities 139,
Valve rod 128 is provided with lower connecting hole 134, and the inner of lower connecting hole 134 is connected with valve rod runner 131, the inner of intercommunicating pore 149 with
The outer end of lower connecting hole 134 coordinates, and offers connection valve rod runner on the valve rod 128 of correspondence shower nozzle mesopore epimere 105A positions
131 with the upper connecting hole 130 of solution temporary storage cavity, be provided with external seal face 148 in the bottom of valve rod 128, in the showerhead hole hypomere
It is connected by inner sealing surface 141 between the bottom of 105C and the upper end of spray orifice 145, inner sealing surface 141 and external seal face 148
Coordinate, offer the whirl hole 138 of connection solution storage cavities 139 and solution vortex chamber on swirl flow nozzle 133.
The external seal face 148 for it is upper big and under little outer conical surface, inner sealing surface 141 for big and lower mouth suitable for reading it is little in
Taper seat.
The intercommunicating pore 149 is opened up along the radial direction of swirl flow nozzle 133.
The number of the whirl hole 138 is 4 ~ 6.
The number of the upper connecting hole 130 is 2 ~ 6 and their equal diameters.
The port of export of the spray orifice 145 is in open-like shape.
Armature 127 is fixed on the upper end of valve rod 128 by way of welding, and valve rod 128 is opened axially along from top to bottom
Blind hole forms valve rod runner 131, offers connection valve rod runner on the valve rod 128 of correspondence shower nozzle mesopore epimere 105A positions
131 radially process and connect in 2 ~ 6 size identicals with connecting hole 130 in 2 ~ 6 size identicals of solution temporary storage cavity, blind hole section
Hole 130 is connect, and external seal face 148 is provided with the bottom of valve rod 128.
During work, the urea liquid with certain pressure come in by nozzle inlet 109, into feed pathway 140, stream
Jing bushings 124 and valve rod spring 116 enter valve rod runner 131, and the upper connecting holes 130 of Jing enter solution temporary storage cavity, due to upper sealing
The inner surface of hole 151A is that couple coordinates with the outer surface of valve rod 128, is acted on flow blocking, and urea liquid can be along valve rod runner
On 131 Jing, connecting hole 130 and intercommunicating pore 149 enter liquid storage cavities 139, and full of whirl hole 138, and it is empty to be gradually filled with liquid storage
Chamber 139, when electromagnetic valve components are powered, armature 127 drives the lifting upwards of whole valve rod 120, external seal face 148 to leave interior sealing
Face, nozzle are opened, as inner surface and 128 outer surface of valve rod of lower sealing hole 151B are that couple coordinates, the main Jing of urea liquid
Whirl hole 138 enters solution vortex chamber and forms eddy flow, and Jing spray orifices 145 spray.
Claims (6)
1. a kind of monoblock type carbamide measuring jet structure, is characterized in that：It includes valve rod（128）, sheath（132）And swirl flow nozzle
（133）, in swirl flow nozzle（133）Lower end outside weldings have sheath（132）, in swirl flow nozzle（133）Lower end outer wall and shield
Set（132）Inwall between formed solution storage cavities（139）, in swirl flow nozzle（133）Bottom offer spray orifice
（145）, swirl flow nozzle（133）Shower nozzle mesopore epimere is offered axially along from top to bottom inside（105A）, upper sealing hole
（151A）, shower nozzle mesopore stage casing（105B）, lower sealing hole（151B）With shower nozzle mesopore hypomere（105C）, upper sealing hole（151A）'s
Diameter and lower sealing hole（151B）Equal diameters, shower nozzle mesopore stage casing（105B）Diameter and shower nozzle mesopore upper-lower section（105C）
Equal diameters, shower nozzle mesopore epimere（105A）With diameter greater than shower nozzle mesopore stage casing（105B）Diameter, shower nozzle mesopore stage casing
（105B）With diameter greater than upper sealing hole（151A）Diameter, in swirl flow nozzle（133）Axial hole in sliding plug have valve rod
（128）, in valve rod（128）With shower nozzle mesopore epimere（105A）Between formed solution temporary storage cavity, in valve rod（128）With shower nozzle mesopore
Hypomere（105C）Between formed solution vortex chamber, valve rod（128）With upper sealing hole（151A）And lower sealing hole（151B）Sealing
Coordinate, valve rod（128）Valve rod runner is offered axially along from top to bottom inside（131）, valve rod runner（131）For blind hole,
Corresponding solution storage cavities（139）The swirl flow nozzle of position（133）On offer intercommunicating pore（149）, intercommunicating pore（149）Outer end
With solution storage cavities（139）Connection, in valve rod（128）It is provided with lower connecting hole（134）, lower connecting hole（134）The inner with
Valve rod runner（131）Connection, intercommunicating pore（149）It is inner with lower connecting hole（134）Outer end coordinate, on correspondence shower nozzle mesopore
Section（105A）The valve rod of position（128）On offer connection valve rod runner（131）With the upper connecting hole of solution temporary storage cavity（130）,
In valve rod（128）Bottom be provided with external seal face（148）, hole hypomere in the showerhead（105C）Bottom and spray orifice（145）
Upper end between pass through inner sealing surface（141）It is connected, inner sealing surface（141）With external seal face（148）Coordinate, in swirl flow nozzle
（133）On offer connection solution storage cavities（139）With the whirl hole of solution vortex chamber（138）.
2. monoblock type carbamide measuring jet structure as claimed in claim 1, is characterized in that：The external seal face（148）For upper
Little outer conical surface, inner sealing surface under greatly（141）For the little internal conical surface of big and lower mouth suitable for reading.
3. monoblock type carbamide measuring jet structure as claimed in claim 1, is characterized in that：The intercommunicating pore（149）Along rotation
Stream shower nozzle（133）Radial direction opened up.
4. monoblock type carbamide measuring jet structure as claimed in claim 1, is characterized in that：The whirl hole（138）Number
For 4 ~ 6.
5. monoblock type carbamide measuring jet structure as claimed in claim 1, is characterized in that：The upper connecting hole（130）Number
Mesh is 2 ~ 6 and their equal diameters.
6. monoblock type carbamide measuring jet structure as claimed in claim 1, is characterized in that：The spray orifice（145）The port of export
In open-like shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057194.XU CN206035606U (en) | 2016-09-14 | 2016-09-14 | Integral urea measurement nozzle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057194.XU CN206035606U (en) | 2016-09-14 | 2016-09-14 | Integral urea measurement nozzle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035606U true CN206035606U (en) | 2017-03-22 |
Family
ID=58295595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057194.XU Withdrawn - After Issue CN206035606U (en) | 2016-09-14 | 2016-09-14 | Integral urea measurement nozzle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194354A (en) * | 2016-09-14 | 2016-12-07 | 无锡威孚高科技集团股份有限公司 | Monoblock type nreameter flow nozzle structure |
-
2016
- 2016-09-14 CN CN201621057194.XU patent/CN206035606U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194354A (en) * | 2016-09-14 | 2016-12-07 | 无锡威孚高科技集团股份有限公司 | Monoblock type nreameter flow nozzle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20181228 |