CN205008133U - Novel outer automobile -used urea nozzle of formula that mixes - Google Patents

Novel outer automobile -used urea nozzle of formula that mixes Download PDF

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Publication number
CN205008133U
CN205008133U CN201520572956.9U CN201520572956U CN205008133U CN 205008133 U CN205008133 U CN 205008133U CN 201520572956 U CN201520572956 U CN 201520572956U CN 205008133 U CN205008133 U CN 205008133U
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China
Prior art keywords
nozzle
nozzle body
installation
passage
urea
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CN201520572956.9U
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Chinese (zh)
Inventor
宋志明
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DONGGUAN CHANGYUAN SPRAYING TECHNOLOGY Co Ltd
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DONGGUAN CHANGYUAN SPRAYING TECHNOLOGY Co Ltd
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Abstract

The utility model relates to a novel outer automobile -used urea nozzle of formula that mixes, this urea nozzle include a nozzle runner seat, and the installation passageway that has a perfect understanding is offered to nozzle runner seat about in the of one, should install the upper end and the inlet pipe connection of passageway, and the nozzle body is installed to the lower tip that should install the passageway, and at the nozzle body and should install passageway internally mounted and have a whirl core, the feed liquor end and the feed liquor seal of tube intercommunication of whirl core, formation first fluid passageway between whirl core outer wall and the nozzle body inner wall, still set up a second fluid passageway that communicates with the first fluid passageway inside nozzle runner seat, the outer end connection of second fluid passageway has the intake pipe. The utility model discloses in, in spray nozzle device's inside, the gas circuit is kept apart with the liquid way totally, but atomizes in outside just mix of jet exit, and atomization effect is better, adopts the whirl core also further to strengthen atomization effect in the liquid way. The gas -liquid separation mode combines with urea pump's suck -back function, can avoid orifice blocking phenomenon.

Description

A kind of novel exterior mixing urea for vehicle nozzle
Technical field:
The utility model relates to tail gas processing system of diesel engine (SCR system) equipment technical field, refers in particular to a kind of novel exterior mixing urea for vehicle nozzle.
Background technology:
Tail gas processing system of diesel engine (SCR system) removes nitrogen oxide in tail gas by spraying urea in tail gas, the nozzle used in this system is at present based on the hybrid urea nozzle in inside, internal-mixing nozzle generates polymer easily block spray orifice, the therefore system failure owing to purging bad and low temperature.
Utility model content:
The purpose of this utility model is the above-mentioned weak point of existing product, provides a kind of novel exterior mixing urea for vehicle nozzle.
The technical solution adopted in the utility model is: a kind of novel exterior mixing urea for vehicle nozzle, this urea nozzle comprises a nozzle flow channel seat, described nozzle flow channel seat offers the installation passage of a up/down perforation, the upper end of this installation passage is connected with feed tube, the bottom of this installation passage is provided with nozzle body, and at nozzle body and this installation channel interior, one eddy flow core is installed, the liquid feeding end of described eddy flow core seals with feed tube and is communicated with, the outlet end of eddy flow core passes the port of export of nozzle body, and form annular slot between eddy flow core outlet end and the nozzle body port of export, first fluid passage is formed between eddy flow outer core and nozzle body inwall, also offer in described nozzle flow channel seat inside one with the second fluid passage of described first fluid channel connection, the outer end of second fluid passage is connected with air inlet pipe.
There is in the two-port up and down of the installation passage of nozzle flow channel seat, the upper end of second fluid passage installation screw socket outwardly respectively; The upper port place of installing passage is also provided with internal thread.
Described second fluid passage communicates with the installation sidepiece of passage and the entrance point of nozzle body.
The outer wall of eddy flow core be provided with interval arrange and with the positioning rib of nozzle body contact internal walls.
Described nozzle flow channel seat is also provided with two installing holes.
In the utility model, in the inside of spray nozzle device, gas circuit and fluid path are completely isolated, but at the outside just mixed aerosol of jet expansion, atomizing effect is better, adopts eddy flow core also to further enhance atomizing effect in fluid path, is therefore more conducive to removing the nitrogen oxide in Vehicular exhaust.Meanwhile, gas-liquid separation mode is combined with the suck-back function of urea pump, can avoid urea crystals and the spray orifice clogging caused.
Accompanying drawing illustrates:
Fig. 1 is sectional view of the present utility model;
Fig. 2 is top view of the present utility model.
Detailed description of the invention:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
As shown in Figure 1, described in the utility model is a kind of novel exterior mixing urea for vehicle nozzle, this urea nozzle comprises a nozzle flow channel seat 1, described nozzle flow channel seat 1 offers the installation path 10 1 of a up/down perforation, the upper end of this installation path 10 1 is connected with feed tube 2, the bottom of this installation path 10 1 is provided with nozzle body 3, and at nozzle body 3 and this installation path 10 1 inside, one eddy flow core 4 is installed, described eddy flow core 4 runs through nozzle body and described installation path 10 1, its liquid feeding end seals with feed tube 2 and is communicated with, the outlet end of eddy flow core 4 passes the port of export of nozzle body 3 slightly, and form annular slot 301 between eddy flow core 4 outlet end and nozzle body 3 port of export, first fluid passage 302 is formed between eddy flow core 4 outer wall and nozzle body 3 inwall, also offer a second fluid path 10 2 be communicated with described first fluid passage 302 in described nozzle flow channel seat 1 inside, the outer end of second fluid path 10 2 is connected with air inlet pipe 5.
Pass through said structure, urea liquid enters eddy flow core 4 and spouting from eddy flow core 4 outlet end from feed tube 2, simultaneously, gas enters from air inlet pipe 5 and flows into first fluid passage 302 through second fluid path 10 2 successively and spray from the annular slot 301 between the outlet and eddy flow core 4 outlet end of nozzle body 3, the urea liquid that eddy flow core 4 outlet end sprays is atomized ejection by the air-flow of high-voltage high-speed further, strengthens atomizing effect; When stopping ejection urea, urea in eddy flow core 4 can be drawn back by the suck-back function of the urea pump (not shown) with suck-back function, avoid resting in eddy flow core 4, air-flow then continues to spray certain hour, one can make the urea droplets in nozzle body 3 exit be purged, two can help nozzle body 3 and the cooling of eddy flow core 4 quick heat radiating, and therefore liquid backflow and gas flow purging coordinate and can effectively avoid nozzle exit urea crystals, thus avoid spray orifice to block.
There is in the two-port up and down of the installation path 10 1 of nozzle flow channel seat 1, the upper end of second fluid path 10 2 installation screw socket 11 outwardly respectively, with respectively with feed liquor, 2, nozzle body 3, air inlet pipe 5 assemble fast; The upper port place of installing path 10 1 is also provided with internal thread (not identifying in figure), to be connected with eddy flow core 4 liquid feeding end outer wall thread.
Described second fluid path 10 2 communicates with the installation sidepiece of path 10 1 and the entrance point of nozzle body 3, the outer wall of eddy flow core 4 be provided with interval arrange and with the positioning rib 41 of nozzle body 3 contact internal walls, be convenient to the assembling between eddy flow core 4 and nozzle body 3.
In the utility model, the upper end of installation path 10 1 is young, lower port is larger, during assembling, first can connect feed tube 2, air inlet pipe 5 respectively at nozzle flow channel seat 1 upper surface, then eddy flow core 4 is penetrated from the lower port of installing path 10 1, always through installing the upper port place of path 10 1 and the locking that is threaded, eddy flow core 4 liquid feeding end is made to conflict to seal with feed tube 2 and be communicated with; Then at the lower port place of installing path 10 1, nozzle body 3 is installed, can assembling be completed, therefore assemble also simple and convenient.The internal diameter of nozzle body 3 is larger than eddy flow core 4 external diameter, installs between rear nozzle body 3 inwall and eddy flow core 4 outer wall and forms described first gas channel 302.
As shown in Figure 2, described nozzle flow channel seat 1 is also provided with two installing holes 12, spray nozzle device to be arranged on the appropriate location of blast pipe.
In the utility model, in the inside of spray nozzle device, gas circuit and fluid path are completely isolated, but at the outside just mixed aerosol of jet expansion, atomizing effect is better, adopts eddy flow core also to further enhance atomizing effect in fluid path, is therefore more conducive to removing the nitrogen oxide in Vehicular exhaust.Meanwhile, gas-liquid separation mode is combined with the suck-back function of urea pump, can avoid urea crystals and the spray orifice clogging caused.

Claims (5)

1. a novel exterior mixing urea for vehicle nozzle, it is characterized in that: this urea nozzle comprises a nozzle flow channel seat, described nozzle flow channel seat offers the installation passage of a up/down perforation, the upper end of this installation passage is connected with feed tube, the bottom of this installation passage is provided with nozzle body, and at nozzle body and this installation channel interior, one eddy flow core is installed, the liquid feeding end of described eddy flow core seals with feed tube and is communicated with, the outlet end of eddy flow core passes the port of export of nozzle body, and form annular slot between eddy flow core outlet end and the nozzle body port of export, first fluid passage is formed between eddy flow outer core and nozzle body inwall, also offer in described nozzle flow channel seat inside one with the second fluid passage of described first fluid channel connection, the outer end of second fluid passage is connected with air inlet pipe.
2. novel exterior mixing urea for vehicle nozzle according to claim 1, is characterized in that: have installation screw socket outwardly respectively in the two-port up and down of the installation passage of nozzle flow channel seat, the upper end of second fluid passage; The upper port place of installing passage is also provided with internal thread.
3. novel exterior mixing urea for vehicle nozzle according to claim 1, is characterized in that: described second fluid passage communicates with the installation sidepiece of passage and the entrance point of nozzle body.
4. novel exterior mixing urea for vehicle nozzle according to claim 1, is characterized in that: the outer wall of eddy flow core be provided with interval arrange and with the positioning rib of nozzle body contact internal walls.
5. novel exterior mixing urea for vehicle nozzle according to claim 1, is characterized in that: described nozzle flow channel seat is also provided with two installing holes.
CN201520572956.9U 2015-07-30 2015-07-30 Novel outer automobile -used urea nozzle of formula that mixes Active CN205008133U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520572956.9U CN205008133U (en) 2015-07-30 2015-07-30 Novel outer automobile -used urea nozzle of formula that mixes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520572956.9U CN205008133U (en) 2015-07-30 2015-07-30 Novel outer automobile -used urea nozzle of formula that mixes

Publications (1)

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CN205008133U true CN205008133U (en) 2016-02-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106513196A (en) * 2016-11-08 2017-03-22 中国空气动力研究与发展中心低速空气动力研究所 Air atomizing nozzle
CN107178409A (en) * 2017-06-02 2017-09-19 中国北方发动机研究所(天津) A kind of external mix formula rotary atomizing nozzle
CN110787927A (en) * 2019-11-21 2020-02-14 安徽千一智能设备股份有限公司 Dust fall nozzle of coal mining machine and dust fall spraying system thereof
CN115870117A (en) * 2023-02-07 2023-03-31 山东浩纳新材料科技集团有限公司 Novel spray nozzle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106513196A (en) * 2016-11-08 2017-03-22 中国空气动力研究与发展中心低速空气动力研究所 Air atomizing nozzle
CN107178409A (en) * 2017-06-02 2017-09-19 中国北方发动机研究所(天津) A kind of external mix formula rotary atomizing nozzle
CN110787927A (en) * 2019-11-21 2020-02-14 安徽千一智能设备股份有限公司 Dust fall nozzle of coal mining machine and dust fall spraying system thereof
CN115870117A (en) * 2023-02-07 2023-03-31 山东浩纳新材料科技集团有限公司 Novel spray nozzle

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