CN115419487B

CN115419487B - Urea atomization plant

Info

Publication number: CN115419487B
Application number: CN202211381517.0A
Authority: CN
Inventors: 高世亮; 侯政
Original assignee: Yantai Luji Automobile Technology Co ltd
Current assignee: Yantai Luji Automobile Technology Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-01-06
Anticipated expiration: 2042-11-07
Also published as: CN115419487A

Abstract

The invention discloses urea atomizing equipment, relates to the field of urea atomizing nozzles, and solves the problem that the existing atomizing nozzle cannot automatically clean urea crystals without dead corners.

Description

Urea atomization plant

Technical Field

The invention relates to the field of urea atomizing nozzles, in particular to urea atomizing equipment.

Background

The urea atomizing nozzle is one of the main components in a diesel engine urea injection system, urea solution is sucked into a urea pump from a urea box and is quantitatively injected into an exhaust pipe through an atomizing nozzle, urea is hydrolyzed into ammonia at high temperature, and the ammonia reacts with nitrogen oxides (harmful emissions) in exhaust gas and a carrier coated with a catalyst to be reduced into nitrogen and water, so that the effect of tail gas purification is achieved.

The prior Chinese utility model with the patent number of CN203347897U discloses an SCR urea nozzle, namely a urea atomizing nozzle for treating tail gas emission of a diesel engine, but in the using process of the urea atomizing nozzle, the inside of the atomizing nozzle and a jet orifice have the condition of urea crystallization due to cold outside climate, the crystallization can influence the atomization effect of urea, the purification effect of nitrogen oxide in an exhaust pipe is influenced, if the tail gas emission exceeds the standard, a diesel vehicle can not normally run, when the urea crystallization is self-cleaned by the atomizing nozzle in the prior art, high-pressure air is independently introduced into the inside of the urea atomizing nozzle, then the atomizing nozzle is heated by a heating pipe, and under the action of blowing and heating of the high-pressure air, the urea crystallization in the atomizing nozzle is cleaned;

however, when the whole atomizing nozzle is heated, the urea cavity inside the nozzle cannot be uniformly heated, urea crystals at the dead angle cannot be removed, and the whole urea atomizing nozzle still needs to be detached and cleaned after too much urea crystals are accumulated.

Disclosure of Invention

The invention aims to provide urea atomizing equipment capable of self-cleaning crystallization without dead angles so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a urea atomization device comprises an atomization nozzle, wherein an air pipe is fixedly mounted at the top of the atomization nozzle, a urea pipe is fixedly arranged on the outer side of the atomization nozzle, a mounting frame convenient to mount with a tail gas discharge pipe is arranged at the top of the atomization nozzle, a gas-liquid mixing chamber is formed in the lower end of the inner side of the atomization nozzle, and a jet orifice is formed in the bottom of the gas-liquid mixing chamber; the gas-liquid mixing component can be used for fully mixing urea and air and spraying out the urea and the air, and is arranged in the atomizing nozzle; the vibration component can vibrate the urea crystals adhered to the inner wall of the atomizing nozzle in the high-pressure air conveying process, the vibration component is arranged at the upper end of the gas-liquid mixing component, and the side end of the vibration component is provided with a driving component, the gas-liquid mixing component comprises an embedded block which is embedded and installed in the atomizing nozzle, the atomizing nozzle is internally provided with an inverted cone-shaped cavity, and is communicated with the gas-liquid mixing chamber, the inner wall of the atomizing nozzle is provided with a spiral groove, the lower port of the spiral groove is communicated with the upper end of the gas-liquid mixing chamber, the outer wall of the embedded block is movably attached to the inner wall of the atomizing nozzle, a vent groove is arranged in the embedded block in a penetrating way, the aperture of the vent groove is gradually reduced from top to bottom, the top of the embedded block is provided with a cavity, the upper end of the vent groove is communicated with the cavity, the lower end of the vent groove is communicated with the gas-liquid mixing chamber, one end of the gas pipe close to the atomizing nozzle is fixedly embedded on the inner side of the cavity, a communicating pipe is fixedly arranged inside the urea pipe, the communicating pipe is communicated with the upper port of the spiral groove, the driving component comprises a thread arc-shaped guide rail fixedly arranged in the cavity, and two ends of the thread arc-shaped guide rail are correspondingly butted with the vent groove and the air pipe, a rotating shaft is arranged at the thread axis of the thread arc-shaped guide rail, and the rotating shaft is rotatably arranged in the cavity through a frame rod, two groups of inner arc blades are fixedly sleeved on the outer surface of the rotating shaft and are correspondingly distributed above the vent groove and below the air pipe, and the number of the inner arc blades in each group is a plurality of and is distributed at equal intervals along the circumference.

Preferably, the vibration subassembly include fixed mounting in the inside conduction piece of cavity, just the inboard rotation of conduction piece has inlayed the carousel, the pivot is close to the one end fixed mounting of conduction piece has gear two, just gear one is installed in the outside meshing of gear two, the inside fixed mounting of gear one has the transmission shaft, just the transmission shaft rotates to inlay inside the hack lever, the transmission shaft is close to the one end fixed mounting of conduction piece in the inside of carousel, the carousel with be equipped with the elastic component between the conduction piece.

Preferably, the elastic component is including offering in the inside a plurality of carousel is the smooth chamber that circumference equidistance distributes, just a plurality of is the triangular groove that circumference equidistance distributes offered to the inner wall of conduction block, the inside slip in smooth chamber has inlayed the slider, the slider is close to spring three is installed to the one end in the carousel centre of a circle, just the other end fixed mounting of slider has the post of strikeing, strike the post slide run through in the carousel, just strike the post activity inlay in the inside in triangular groove.

Preferably, the radius of the first gear is larger than that of the second gear.

Preferably, a plurality of dispersion columns are fixedly arranged on the inner wall of the gas-liquid mixing chamber and are circumferentially and equidistantly distributed, and one ends of the dispersion columns incline towards the direction of the jet orifice.

Preferably, the interior abaculus with install coupling assembling between the mounting bracket, coupling assembling include fixed mounting in interior abaculus top is two stands of symmetric distribution, just the upper end fixed mounting of stand has the square, the bottom fixed mounting of mounting bracket has the cover piece, just cover piece activity package cover in the outside of square, the square all around all fixed mounting have spring one, just the bottom of square with fixed mounting has spring two between the cover piece.

Preferably, the bottom of the sleeve block is provided with a through hole for the upright column to slide, and the inner diameter of the through hole is larger than the outer diameter of the upright column.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, urea and high-pressure air are fully mixed and sprayed out through the gas-liquid mixing assembly, the phenomenon that large-particle liquid beads are generated to influence the full contact of the urea and nitrogen oxides is avoided, meanwhile, under the action of the driving assembly, the rotary table rotates anticlockwise in the conduction block at a certain speed, the knocking columns are slowly pressed into the rotary table and then instantly popped out to knock the knocking columns in the triangular grooves, the conduction block effectively transmits vibration to the whole atomizing nozzle through the synchronous knocking of the plurality of knocking columns on the triangular grooves, and urea crystals adhered to the dead corners in the conduction block vibrate and fall off, wherein the connection assembly is used for ensuring the effect that the whole atomizing nozzle is vibrated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a separation structure of an atomizing nozzle and an embedded block according to the present invention;

FIG. 3 is an overall cross-sectional view of the present invention;

FIG. 4 is a schematic structural view of the threaded arc-shaped guide rail and the rotating shaft of the present invention;

FIG. 5 is a schematic view of a first gear and a second gear of the present invention in a separated configuration;

FIG. 6 is a schematic view of the structure of the conductive block and the turntable of the present invention;

FIG. 7 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

FIG. 8 is an enlarged view taken at B of FIG. 3 in accordance with the present invention;

FIG. 9 is an enlarged view taken at C of FIG. 3 in accordance with the present invention;

FIG. 10 is an enlarged view taken at D of FIG. 6 according to the present invention.

In the figure: 1. an atomizing nozzle; 2. a gas-liquid mixing chamber; 3. an ejection port; 4. an air tube; 5. a urea pipe; 6. a mounting frame; 7. a connection assembly; 8. a drive assembly; 9. a vibrating assembly; 10. an embedded block; 11. a helical groove; 12. a communicating pipe; 13. a vent channel; 14. a dispersion column; 15. a cavity; 16. a column; 17. a square block; 18. sleeving blocks; 19. a first spring; 20. a second spring; 21. a threaded arc guide rail; 22. a rotating shaft; 23. an inner arc blade; 24. a conductive block; 25. a turntable; 26. a drive shaft; 27. a first gear; 28. a second gear; 29. a slide chamber; 30. a triangular groove; 31. a slider; 32. a third spring; 33. knocking the column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and 3, a urea atomizing apparatus shown in the figure includes an atomizing nozzle 1, an air pipe 4 is fixedly installed at the top of the atomizing nozzle 1, a urea pipe 5 is fixedly installed at the outer side of the atomizing nozzle 1, an installation frame 6 convenient for installation with a tail gas discharge pipe is installed at the top of the atomizing nozzle 1, a gas-liquid mixing chamber 2 is installed at the lower end of the inner side of the atomizing nozzle 1, and a jet orifice 3 is installed at the bottom of the gas-liquid mixing chamber 2; the gas-liquid mixing component can ensure that urea and air are fully mixed and sprayed out and is arranged in the atomizing nozzle 1; a vibration component 9, which can vibrate urea crystals adhered to the inner wall of the atomizing nozzle 1 in the high-pressure air conveying process, the vibration component 9 is installed at the upper end of the gas-liquid mixing component, and a driving component 8 is installed at the side end of the vibration component 9, wherein the air pipe 4 is connected with a high-pressure air pump, high-pressure air is pumped into the atomizing nozzle 1, the urea pipe 5 is connected with the urea pump, please refer to fig. 2, 3 and 7, the gas-liquid mixing component in the figure comprises an inner embedded block 10 which is embedded and installed inside the atomizing nozzle 1, the atomizing nozzle 1 is in an inverted cone-shaped cavity and is communicated with the gas-liquid mixing chamber 2, the inner wall of the atomizing nozzle 1 is provided with a spiral groove 11, the lower port of the spiral groove 11 is communicated with the upper end of the gas-liquid mixing chamber 2, the outer wall of the inner embedded block 10 is movably attached to the inner wall of the atomizing nozzle 1, and the inner embedded block 10 is provided with a vent groove 13, the aperture of the vent groove 13 is gradually reduced from top to bottom, the top of the embedded block 10 is provided with a cavity 15, the upper end of the vent groove 13 is communicated with the cavity 15, the lower end of the vent groove 13 is communicated with the gas-liquid mixing chamber 2, one end of the gas pipe 4 close to the atomizing nozzle 1 is fixedly embedded in the inner side of the cavity 15, the urea pipe 5 is internally and fixedly provided with a communicating pipe 12, the communicating pipe 12 is communicated with the upper port of the spiral groove 11, the spiral groove 11 forms a threaded flow passage through the embedding of the embedded block 10 and the atomizing nozzle 1, so that the urea enters the gas-liquid mixing chamber 2 in a spiral flowing manner, referring to fig. 4 and 5, the driving assembly 8 comprises a threaded arc-shaped guide rail 21 fixedly arranged in the cavity 15 in the figure, two ends of the threaded arc-shaped guide rail 21 are correspondingly butted with the vent groove 13 and the gas pipe 4, and a rotating shaft 22 is arranged at the threaded shaft center of the threaded arc-shaped guide rail 21, and pivot 22 passes through the hack lever rotation and installs in the inside of cavity 15, and the fixed cover of the surface of pivot 22 has connect two sets of inner arc blade 23, and two sets of inner arc blade 23 correspond to distribute in the top of air duct 13 and the below of trachea 4, and the quantity of every inner arc blade 23 of group is a plurality of, and is circumference equidistance and distributes, through the guide of screw thread arc guide rail 21 to high-pressure draught, enables the air current to the effectual blowing of two sets of inner arc blade 23 to make pivot 22 rotate.

Referring to fig. 5 and 6, in the drawings, the vibration assembly 9 includes a conductive block 24 fixedly installed inside the cavity 15, a turntable 25 is rotatably embedded inside the conductive block 24, a second gear 28 is fixedly installed at one end of the rotating shaft 22 close to the conductive block 24, a first gear 27 is engaged with the outer side of the second gear 28, a transmission shaft 26 is fixedly installed inside the first gear 27, the transmission shaft 26 is rotatably embedded inside the rack bar, one end of the transmission shaft 26 close to the conductive block 24 is fixedly embedded inside the turntable 25, an elastic member is arranged between the turntable 25 and the conductive block 24, and the rotation of the second gear 28 can drive the turntable 25 to rotate inside the conductive block 24 by movably engaging with the first gear 27.

Referring to fig. 6 and 10, in the drawings, the elastic element includes a plurality of sliding cavities 29 arranged inside the turntable 25 and equidistantly distributed along the circumference, and the inner wall of the conducting block 24 is provided with a plurality of triangular grooves 30 equidistantly distributed along the circumference, a sliding block 31 is slidably embedded inside the sliding cavities 29, a third spring 32 is installed at one end of the sliding block 31 close to the center of the turntable 25, a knocking column 33 is fixedly installed at the other end of the sliding block 31, the knocking column 33 slidably penetrates through the turntable 25, the knocking column 33 is movably embedded inside the triangular grooves 30, the turntable 25 rotates counterclockwise by clockwise rotation of the rotating shaft 22, the knocking column 33 is compressed into the turntable 25, and then the knocking column 33 instantly pops out due to pushing of the third spring 32 and knocks the conducting block 24 under constant-speed rotation of the turntable 25.

Referring to fig. 6, the radius of the first gear 27 is larger than the radius of the second gear 28, and when the second gear 28 rotates fast and the first gear 27 rotates, the rotation speed can be reduced, so that the transmission shaft 26 rotates slowly and stably.

Referring to fig. 9, a plurality of dispersion columns 14 are fixed on the inner wall of the gas-liquid mixing chamber 2, and one end of each dispersion column 14 is inclined toward the injection port 3, and the dispersion columns 14 can block and disperse the urea entering the gas-liquid mixing chamber 2, so as to effectively mix the urea with the high-pressure gas flow.

The working principle of self-cleaning crystallization without dead angles is as follows: under normal conditions, when the atomizing nozzle 1 works, high-pressure air is pumped into the atomizing nozzle 1 by a high-pressure air pump through an air pipe 4, urea is input into the atomizing nozzle 1 by a urea pump through a urea pipe 5, wherein the urea enters the gas-liquid mixing chamber 2 in a spiral shape under the guide of a spiral groove 11, and at the moment when the urea enters the gas-liquid mixing chamber 2, the urea is blocked by a dispersion column 14 and is randomly distributed, meanwhile, the high-pressure air enters the gas-liquid mixing chamber 2 quickly through a vent groove 13 under the action of a threaded arc-shaped guide rail 21, contacts with the distributed urea and is sprayed out quickly through a spray opening 3, the distributed urea can be fully mixed with high-pressure air flow, so that when the urea is sprayed out through the spray opening 3, the atomized particles are more uniform, and the condition that large liquid beads drop cannot occur;

meanwhile, when high-pressure air rapidly flows through the guide of the threaded arc-shaped guide rail 21, the inner arc blades 23 arranged at the axis of the threaded arc-shaped guide rail 21 are blown, so that the rotating shaft 22 rapidly rotates in the threaded arc-shaped guide rail 21, the rotating shaft 22 rotates through the movable engagement of the first gear 27 and the second gear 28, so that the rotating disc 25 rotates anticlockwise in the conducting block 24, because a differential speed is formed between the rotating shaft 22 and the transmission shaft 26, at the moment, the rotating disc 25 does not rotate rapidly, in the rotating process, the knocking column 33 is gradually retracted towards the inside of the rotating disc 25 due to the obstruction of the triangular groove 30, when the rotating disc 25 completely retracts and rotates to the position of the next triangular groove 30, the knocking column 33 can be instantly ejected and knocked to the conducting block 24 through the compression elastic force provided by the third spring 32, the vibrating force generated by knocking can be transmitted to the whole atomizing nozzle 1, so that urea crystals attached to the inside the dead corners of the atomizing nozzle 1 are loosened after being vibrated, the urea is separated from the urea and flows through the high-pressure air flow and the urea flows, and the urea is gradually blown out of the atomizing nozzle 1, and the spraying nozzle 1, and the urea cannot be gradually accumulated under the condition that the urea cannot be gradually used, so that the urea cannot be gradually accumulated;

it is worth noting that a user can firstly blow high-pressure airflow into the air pipe 4 through the high-pressure air pump to touch the driving component 8 and the vibrating component 9, so that the whole atomizing nozzle 1 is firstly vibrated for a period of time, and then urea is pumped in to wash urea crystals falling off from the inside of the atomizing nozzle 1;

and after the atomizing nozzle 1 finishes working, high-pressure airflow is pumped separately, and the vibration conduction of the high-pressure airflow can prevent urea liquid beads from being adhered to the inner wall of the atomizing nozzle 1, so that the urea liquid beads can drop through the jet orifice 3 under the vibration effect.

Example 2

Referring to fig. 8, in this embodiment, as further described in embodiment 1, a connection assembly 7 is installed between the inner insert 10 and the mounting bracket 6, the connection assembly 7 includes two upright posts 16 that are fixedly installed at the top of the inner insert 10 and symmetrically distributed, a block 17 is fixedly installed at the upper ends of the upright posts 16, a sleeve block 18 is fixedly installed at the bottom of the mounting bracket 6, the sleeve block 18 is movably sleeved outside the block 17, a first spring 19 is fixedly installed at each of the front, rear, left, and right sides of the block 17, and a second spring 20 is fixedly installed between the bottom of the block 17 and the sleeve block 18, so that the block 17 can slightly rock inside the sleeve block 18, a through hole for sliding the upright post 16 is formed at the bottom of the sleeve block 18, the inner diameter of the through hole is larger than the outer diameter of the upright post 16, and the inner diameter of the through hole is larger than the outer diameter of the upright post 16 so as not to affect horizontal rocking of the upright post 16.

In this embodiment: make to have the space that can slightly displace between square 17 and the nest block 18 to and make the through-hole and stand 16 between have the purpose in clearance, when the inside of atomizing nozzle 1 receives the effect of drive assembly 8 and vibration subassembly 9 to take place the vibration, its atomizing nozzle 1 is whole not dead with the tail gas discharge pipe is fixed, there is slight rock between atomizing nozzle 1 and the tail gas discharge pipe, be in order to guarantee the better transmission of vibrational force, according to the principle of vibration, the more apart from the limited department, the range of its vibration just is bigger, the influence that receives is bigger, guarantee that the inside of gas-liquid mixing chamber 2 and helicla flute 11 receives effectual vibration conduction.

Example 3

Referring to fig. 3, in the present embodiment, for further description of other embodiments, a plurality of dispersion columns 14 are fixedly installed on the inner wall of the gas-liquid mixing chamber 2, and are distributed circumferentially and equidistantly, and one end of each dispersion column 14 is inclined towards the direction of the injection port 3, and the dispersion columns 14 can block and disperse the urea entering the gas-liquid mixing chamber 2, so as to effectively mix the urea with the high-pressure gas flow.

In this embodiment: the dispersion column 14 is inclined toward the injection port 3 in order to guide the urea and the gas-liquid mixture of urea downward after the dispersion column 14 disperses the urea.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a urea atomization plant, includes atomizing nozzle (1), the top fixed mounting of atomizing nozzle (1) has trachea (4), just the fixed urea pipe (5), its characterized in that are equipped with in the outside of atomizing nozzle (1): the top of the atomizing nozzle (1) is provided with a mounting frame (6) convenient for mounting with a tail gas discharge pipe, the lower end of the inner side of the atomizing nozzle (1) is provided with a gas-liquid mixing chamber (2), and the bottom of the gas-liquid mixing chamber (2) is provided with a jet orifice (3);

the gas-liquid mixing component can be used for fully mixing and spraying urea and air and is arranged in the atomizing nozzle (1);

the vibration assembly (9) can vibrate urea crystals adhered to the inner wall of the atomizing nozzle (1) in the high-pressure air conveying process, the vibration assembly (9) is installed at the upper end of the gas-liquid mixing assembly, and a driving assembly (8) is arranged at the side end of the vibration assembly (9);

the gas-liquid mixing component comprises an embedded block (10) which is embedded in the atomizing nozzle (1), the atomizing nozzle (1) is provided with an inverted cone-shaped cavity and communicated with the gas-liquid mixing chamber (2), the inner wall of the atomizing nozzle (1) is provided with a spiral groove (11), the lower port of the spiral groove (11) is communicated with the upper end of the gas-liquid mixing chamber (2), the outer wall of the embedded block (10) is movably attached to the inner wall of the atomizing nozzle (1), the inner part of the embedded block (10) is provided with a vent groove (13) in a penetrating manner, the aperture of the vent groove (13) is gradually reduced from top to bottom, the top of the embedded block (10) is provided with a cavity (15), the upper end of the vent groove (13) is communicated with the cavity (15), the lower end of the vent groove (13) is communicated with the gas-liquid mixing chamber (2), one end, close to the atomizing nozzle (1), of the gas pipe (4) is fixedly embedded in the inner side of the cavity (15), a communicating pipe (12) is fixedly installed in the urea pipe (5), and the upper end of the communicating pipe (12) is communicated with the spiral groove (11);

the driving assembly (8) comprises a threaded arc-shaped guide rail (21) fixedly installed inside the cavity (15), two ends of the threaded arc-shaped guide rail (21) are correspondingly butted with the air duct (13) and the air pipe (4), a rotating shaft (22) is installed at the threaded axis of the threaded arc-shaped guide rail (21), the rotating shaft (22) is rotatably installed inside the cavity (15) through a frame rod, two groups of inner arc blades (23) are fixedly sleeved on the outer surface of the rotating shaft (22), the two groups of inner arc blades (23) are correspondingly distributed above the air duct (13) and below the air pipe (4), and the number of the inner arc blades (23) in each group is a plurality and is distributed at equal intervals in the circumference;

the vibration component (9) comprises a conduction block (24) fixedly installed inside the cavity (15), a turntable (25) is embedded on the inner side of the conduction block (24) in a rotating mode, a second gear (28) is fixedly installed at one end, close to the conduction block (24), of the rotating shaft (22), a first gear (27) is installed on the outer side of the second gear (28) in a meshed mode, a transmission shaft (26) is fixedly installed inside the first gear (27), the transmission shaft (26) is embedded inside a rack rod in a rotating mode, one end, close to the conduction block (24), of the transmission shaft (26) is fixedly embedded inside the turntable (25), and an elastic piece is arranged between the turntable (25) and the conduction block (24);

elastic component is including seting up in carousel (25) inside a plurality of is smooth chamber (29) that circumference equidistance distributes, just three angular groove (30) that a plurality of is circumference equidistance and distributes are seted up to the inner wall of conduction block (24), the inside slip of smooth chamber (29) has inlayed slider (31), slider (31) are close to spring three (32) are installed to the one end in carousel (25) centre of a circle, just the other end fixed mounting of slider (31) has strikes post (33), strike post (33) slide run through in carousel (25), just strike post (33) activity inlay in the inside of three angular groove (30).

2. The urea atomizing plant of claim 1, wherein: the radius of the first gear (27) is larger than that of the second gear (28).

3. The urea atomizing plant of claim 1, wherein: the inner wall of the gas-liquid mixing chamber (2) is fixedly provided with a plurality of dispersion columns (14) which are distributed circumferentially at equal intervals, and one ends of the dispersion columns (14) incline towards the direction of the jet orifice (3).

4. The urea atomizing plant of claim 1, wherein: interior abaculus (10) with install coupling assembling (7) between mounting bracket (6), coupling assembling (7) including fixed mounting in interior abaculus (10) top is two stand (16) of symmetric distribution, just the upper end fixed mounting of stand (16) has square (17), the bottom fixed mounting of mounting bracket (6) has cover block (18), just cover block (18) activity be chartered on in the outside of square (17), the equal fixed mounting in four directions has spring (19) all around of square (17), just the bottom of square (17) with fixed mounting has spring two (20) between cover block (18).

5. Urea atomizing plant according to claim 4, characterized in that: the bottom of the sleeve block (18) is provided with a through hole for the upright post (16) to slide, and the inner diameter of the through hole is larger than the outer diameter of the upright post (16).