CN213510812U - Asymmetric post-processing mixing device - Google Patents
Asymmetric post-processing mixing device Download PDFInfo
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- CN213510812U CN213510812U CN202022839019.9U CN202022839019U CN213510812U CN 213510812 U CN213510812 U CN 213510812U CN 202022839019 U CN202022839019 U CN 202022839019U CN 213510812 U CN213510812 U CN 213510812U
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Abstract
The utility model discloses an asymmetric aftertreatment mixing arrangement, a front baffle is arranged in a shell, a rear baffle is arranged at the rear side of the front baffle, the rear baffle is provided with a rear shielding part, and two sides of the rear shielding part are respectively bent towards the front baffle to form a first side shielding part and a second side shielding part; a first air inlet channel is formed in the first side shielding part, and a first side baffle is arranged outside the first air inlet channel; a second side baffle plate is arranged outside the second air inlet channel; the opening area of the first intake passage is smaller than the opening area of the second intake passage. The utility model discloses the air current that gets into the hybrid chamber from first air inlet chamber and second air inlet chamber can have the difference of admitting air, and the air current can form the circulation after getting into the hybrid chamber through the inlet channel who corresponds respectively from two air inlet chambers, plays effectual dispersion and adds the heating effect in advance to the urea liquid drop of spraying, has also prolonged the air current and to the heating route of urea liquid drop simultaneously, has improved the heat utilization efficiency of tail gas.
Description
Technical Field
The utility model belongs to the technical field of the engine exhaust aftertreatment technique and specifically relates to an asymmetric aftertreatment mixing arrangement.
Background
At present, in an engine exhaust gas after-treatment system, a Selective Catalytic Reduction (SCR) technology is generally adopted to carry out after-treatment on the exhaust gas emission of an engine; in order to ensure that urea liquid drops can be fully and uniformly mixed with the tail gas of the diesel engine in the after-treatment system, a mixer is added in the after-treatment system, urea aqueous solution is sprayed into the mixer, and the urea aqueous solution is heated and decomposed by the tail gasTo ammonia gas (NH)3) Ammonia gas (NH) under the action of catalyst3) Removing Nitrogen Oxides (NO) from exhaust gasesX) Reduction to harmless nitrogen (N)2) And water (H)2O), and finally discharged from the tail gas pipe, thereby achieving the purpose of reducing the emission.
The existing tail gas aftertreatment mixing device generally has the problem of poor heat utilization rate, so that urea liquid drops are not fully absorbed and volatilized, urea crystals are easily formed on the inner wall surfaces of all parts in the mixing device when the urea liquid drops drop to the inner wall surfaces of the parts, the performance of an aftertreatment system is influenced, and even more, the exhaust exceeds the standard or the aftertreatment system is blocked, so that the power of a vehicle is insufficient.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects of low space utilization rate, high pressure loss and large influence on the performance of the engine of the mixer of the existing tail gas aftertreatment system, and provides a partition type mixer with a heat insulation structure, which is reasonable in structure, high in space utilization rate, low in pressure loss and capable of ensuring the performance of the engine.
The utility model discloses the technical scheme who adopts as follows:
an asymmetric post-processing mixing device is characterized in that a front baffle is arranged in a shell, a rear baffle is arranged on the rear side of the front baffle, the rear baffle is provided with a rear shielding part, and the lower edge of the rear shielding part is away from the inner wall surface of the lower side of the shell by a certain distance to form an air outlet channel of air flow; the two sides of the rear shielding part are respectively bent towards the front baffle to form a first side shielding part and a second side shielding part; a first air inlet channel is formed in the first side shielding part, and a first side baffle is arranged outside the first air inlet channel; a second side baffle plate is arranged outside the second air inlet channel; the opening area of the first air inlet passage is smaller than that of the second air inlet passage; the front baffle, the rear baffle, the first side baffle and the second side baffle divide an inner cavity of the shell into a first air inlet cavity, a second air inlet cavity, a mixing cavity and an air outlet cavity; the first air inlet cavity is communicated with the mixing cavity through a first air inlet channel, the second air inlet cavity is communicated with the mixing cavity through a second air inlet channel, and the cavity volume of the first air inlet cavity is smaller than that of the second air inlet cavity; the front baffle plate is provided with air inlet holes corresponding to the first air inlet cavity and the second air inlet cavity respectively.
The utility model discloses a cavity volume of first air inlet chamber is less than the cavity volume of second air inlet chamber, and the open area of first inlet channel is less than the open area of second inlet channel, therefore the air current that gets into the mixing chamber from first air inlet chamber and second air inlet chamber can have the difference of admitting air, because of two sector plate position differences, make the air current that gets into the air inlet chamber be close to preceding baffle and back plate respectively and flow in, the risk that the air current is low accumulation urea crystallization because of near gas velocity of flow in preceding baffle inside wall face is reduced, the air current can form the circulation after getting into the mixing chamber through corresponding inlet channel respectively from two air inlet chambers, play effectual dispersion and preheat the effect to the urea liquid drop that sprays, also prolonged the air current to the heating path of urea liquid drop simultaneously, the heat utilization efficiency of tail gas has been improved, make the urea liquid drop fully absorb heat and volatilize, avoid urea liquid drop to form urea crystallization on the internal face of corresponding part, the risk of urea crystallization is reduced, the performance of the post-treatment system is ensured, the emission standard exceeding or the post-treatment system blockage is avoided, and the vehicle power requirement is ensured.
As a further improvement of the above technical solution:
the first side shielding part of the rear baffle is provided with a first vertical part and a first horizontal part, and the second side shielding part is provided with a second vertical part and a second horizontal part; the first side baffle is provided with a first fan-shaped plate and a first square plate which are vertical to each other, and the second side baffle is provided with a second fan-shaped plate and a second square plate which are vertical to each other; the outer side edge of the first side baffle/the second side baffle extends to the inner wall surface of the shell, the inner side edge of the first sector plate/the second sector plate is connected to the front side edge of the first vertical part/the second vertical part, and the inner side edge of the first square plate/the second square plate is connected to the upper side edge of the first horizontal part/the second horizontal part.
The first side baffle and the second side baffle incline upwards at a certain angle in an inclined way.
A plurality of groups of first air supply holes are formed in the front baffle plate and positioned between the two air inlet holes, and the first air supply holes are communicated with the mixing cavity.
The first air supply hole is opposite to the middle plate surface of the rear shielding part of the rear baffle plate.
Two air inlets of the front baffle plate are opposite to the outer side plate surfaces of the first sector plate, the second sector plate and the rear shielding part.
The utility model discloses a tail gas air current gets into, directly blows the face of first sector plate/second sector plate and back occlusion part from the inlet port, can heat corresponding face, makes the urea liquid drop that drops fully absorb heat and volatilize, has reduced the risk of urea crystallization. The tail gas airflow directly enters the mixing cavity from the first air supply hole to further provide heat for the urea liquid drops, so that the urea liquid drops can absorb heat and volatilize sufficiently, the heat utilization efficiency of the tail gas is improved, and the risk of urea crystallization is reduced; and the middle plate surface of the shielding part after the air flow entering from the first air supply hole is directly blown can heat the corresponding plate surface, so that the dropped urea liquid drops can fully absorb heat and volatilize, and the risk of urea crystallization is reduced. The tail gas airflow can directly enter the air outlet cavity from the second air supply holes, on one hand, the airflow entering from the second air supply holes directly blows the bottom surface of the shell, so that urea liquid drops falling on the bottom surface of the shell can be fully evaporated and decomposed by absorbing heat, and urea crystals and crystal accumulation caused by the deposition of the urea liquid drops on the bottom surface of the shell are avoided; on the other hand, the effective flow cross-sectional area of the airflow is increased, the flow resistance of the airflow is reduced, the back pressure of the airflow is reduced, and the pressure loss is further reduced.
The lower part of the front baffle is provided with a plurality of second air supply holes which are communicated with the air outlet cavity.
A nozzle seat is arranged on the shell and opposite to the mixing cavity; a plurality of first pore plates are arranged in the mixing cavity, and a plurality of first through holes are formed in the first pore plates; an arc-shaped second pore plate is arranged below the first pore plate at the lowest side, and a plurality of second through holes are formed in the second pore plate.
The second orifice plate is recessed downwardly toward the outlet chamber.
Inside the shell, be located the fixed guide plate that is provided with in air outlet channel's rear, certain distance is separated between guide plate and the backplate, offers a plurality of third through-holes on the face of guide plate.
The utility model has the advantages as follows:
the utility model discloses a cavity volume of first air inlet chamber is less than the cavity volume of second air inlet chamber, and the open area of first inlet channel is less than the open area of second inlet channel, therefore the air current that gets into the mixing chamber from first air inlet chamber and second air inlet chamber can have the difference of admitting air, because of two sector plate position differences, make the air current that gets into the air inlet chamber be close to preceding baffle and back plate respectively and flow in, the risk that the air current is low accumulation urea crystallization because of near gas velocity of flow in preceding baffle inside wall face is reduced, the air current can form the circulation after getting into the mixing chamber through corresponding inlet channel respectively from two air inlet chambers, play effectual dispersion and preheat the effect to the urea liquid drop that sprays, also prolonged the air current to the heating path of urea liquid drop simultaneously, the heat utilization efficiency of tail gas has been improved, make the urea liquid drop fully absorb heat and volatilize, avoid urea liquid drop to form urea crystallization on the internal face of corresponding part, the risk of urea crystallization is reduced, the performance of the post-treatment system is ensured, the emission standard exceeding or the post-treatment system blockage is avoided, and the vehicle power requirement is ensured.
The utility model discloses a tail gas air current gets into, directly blows the face of first sector plate/second sector plate and back occlusion part from the inlet port, can heat corresponding face, makes the urea liquid drop that drops fully absorb heat and volatilize, has reduced the risk of urea crystallization. The tail gas airflow directly enters the mixing cavity from the first air supply hole to further provide heat for the urea liquid drops, so that the urea liquid drops can absorb heat and volatilize sufficiently, the heat utilization efficiency of the tail gas is improved, and the risk of urea crystallization is reduced; and the middle plate surface of the shielding part after the air flow entering from the first air supply hole is directly blown can heat the corresponding plate surface, so that the dropped urea liquid drops can fully absorb heat and volatilize, and the risk of urea crystallization is reduced. The tail gas airflow can directly enter the air outlet cavity from the second air supply holes, on one hand, the airflow entering from the second air supply holes directly blows the bottom surface of the shell, so that urea liquid drops falling on the bottom surface of the shell can be fully evaporated and decomposed by absorbing heat, and urea crystals and crystal accumulation caused by the deposition of the urea liquid drops on the bottom surface of the shell are avoided; on the other hand, the effective flow cross-sectional area of the airflow is increased, the flow resistance of the airflow is reduced, the back pressure of the airflow is reduced, and the pressure loss is further reduced.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a longitudinal sectional view of the present invention.
Fig. 4 is the utility model discloses after demolising the shell, the schematic structure diagram of inside subassembly.
In the figure: 1. a housing; 2. a nozzle holder; 3. a front baffle; 31. an air inlet; 32. a first air supply hole; 33. a second air supply hole; 4. a tailgate; 41. a rear shielding portion; 42. a first side shielding portion; 421. a first vertical portion; 422. a first horizontal portion; 423. a first air intake passage; 43. a second side shielding portion; 431. a second vertical portion; 432. a second horizontal portion; 433. a second intake passage; 5. a first side dam; 51. a first sector plate; 52. a first square plate; 6. a second side baffle; 61. a second sector plate; 62. a second square plate; 7. a first orifice plate; 71. a first through hole; 8. a second orifice plate; 81. a second through hole; 9. a baffle; 91. a third through hole; 101. a first air intake chamber; 102. a second air intake chamber; 11. a mixing chamber; 12. an air outlet cavity; 13. and an air outlet channel.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 3 and 4, the inner wall surface of the front end of the cylindrical housing 1 of the present invention is vertically provided with a circular front baffle 3 along the radial direction, and the outer circumference contour dimension of the front baffle 3 matches with the inner circumference contour dimension of the housing 1. A rear baffle 4 is vertically arranged at the rear side of the front baffle 3 along the radial direction, as shown in fig. 1, the rear baffle 4 is provided with a rear shielding part 41 which is parallel to the front baffle 3 and has a certain distance, the upper edge of the rear shielding part 41 is fixed on the inner wall surface of the upper side of the shell 1, and the lower edge of the rear shielding part is separated from the inner wall surface of the lower side of the shell 1 by a certain distance to form an air outlet channel 13 of air flow; the left and right sides of the rear shielding portion 41 are bent forward by 90 degrees toward the front baffle 3, and then a first side shielding portion 42 and a second side shielding portion 43 are formed at both sides of the rear shielding portion 41, a first side baffle 5 is fixedly arranged at the outer side of the first side shielding portion 42, and a second side baffle 6 is fixedly arranged at the outer side of the second side shielding portion 43. The front baffle 3, the rear baffle 4, the first side baffle 5 and the second side baffle 6 divide the inner cavity of the shell 1 into a first air inlet cavity 101, a second air inlet cavity 102, a mixing cavity 11 and an air outlet cavity 12, wherein the first air inlet cavity 101 is a cavity at the rear side of the front baffle 3 and between the inner side of the first side baffle 5 and the outer side of the first side shielding part 42 of the rear baffle 4; the second air inlet cavity 102 is a cavity behind the front baffle 3 and between the inner side of the second side baffle 6 and the outer side of the second side baffle part 43 of the rear baffle 4; the mixing chamber 11 is a cavity behind the front baffle 3, in front of the rear shielding part 41 of the rear baffle 4, and between the inner sides of the first side shielding part 42 and the second side shielding part 43; the air outlet cavity 12 is a cavity on the rear side of the front baffle 3 and outside the rear baffle 4, the first side baffle 5 and the second side baffle 6. The shell 1 is provided with a nozzle holder 2 opposite to the mixing cavity 11, the nozzle holder 2 is connected with a urea nozzle, and the urea nozzle can spray urea liquid drops in the mixing cavity 11. A plurality of first pore plates 7 are arranged in the mixing cavity 11 from top to bottom, a plurality of first through holes 71 are formed in the first pore plates 7, an arc-shaped second pore plate 8 is arranged below the first pore plate 7 at the lowest side, and a plurality of second through holes 81 are formed in the second pore plate 8; the first orifice plate 7 and the second orifice plate 8 are positioned right below the nozzle holder 2, and have the function of crushing urea liquid drops sprayed by the urea nozzle, so that the urea liquid drops are volatilized; the second pore plate 8 is downwards concave towards the gas outlet cavity 12, so that the movement track length of urea liquid drops is increased, the urea liquid drops and tail gas airflow are fully and uniformly mixed, and the urea liquid drops are fully pyrolyzed. Inside shell 1, the fixed guide plate 9 that is provided with in rear that is located air outlet channel 13, certain distance in interval between guide plate 9 and the backplate 4, set up a plurality of third through holes 91 on the face of guide plate 9, guide plate 9 makes the air current that goes out air cavity 12 outflow take place the whirl, increases the mixing path, and the mixing effect is better, and the homogeneity of mixing is higher.
As shown in fig. 1 and 4, the first side blocking portion 42 of the rear baffle 4 is provided with a first air intake channel 423 to form a first vertical portion 421 and a first horizontal portion 422, and the first air intake channel 423 communicates the first air intake chamber 101 and the mixing chamber 11. The second side shielding part 43 is provided with a second air inlet channel 433 to form a second vertical part 431 and a second horizontal part 432; the second air inlet channel 433 communicates the second air inlet chamber 102 with the mixing chamber 11; the opening area of first intake passage 423 is smaller than the opening area of second intake passage 433, that is, the width of first upright portion 421 is larger than the width of second upright portion 431. The first side baffle 5 and the second side baffle 6 are both L-shaped plates, the first side baffle 5 has a first fan-shaped plate 51 and a first square plate 52 which are perpendicular to each other, and the second side baffle 6 has a second fan-shaped plate 61 and a second square plate 62 which are perpendicular to each other. The first side baffle 5 and the second side baffle 6 are respectively arranged outside the first air inlet channel 423 of the first side shielding part 42 and the second side shielding part 43, the outer side edge of the first side baffle 5/the second side baffle 6 extends to the inner wall surface of the housing 1, the inner side edge of the first fan-shaped plate 51/the second fan-shaped plate 61 is connected to the front side edge of the first vertical part 421/the second vertical part 431, and the inner side edge of the first square plate 52/the second square plate 62 is connected to the upper side edge of the first horizontal part 422/the second horizontal part 432. As shown in fig. 4, the cavity volume of the first air intake cavity 101 is smaller than the cavity volume of the second air intake cavity 102, and the opening area of the first air intake channel 423 is smaller than the opening area of the second air intake channel 433, so that there is an air intake difference between the air flows entering the mixing cavity 11 from the first air intake cavity 101 and the second air intake cavity 102, and due to the position difference between the first sector plate 51 and the second sector plate 61, the air flows entering the air intake cavities respectively flow close to the front baffle plate 3 and the rear baffle plate 4, thereby reducing the risk of urea crystallization accumulated on the inner side wall surface of the front baffle plate 3 due to low gas flow velocity nearby, and forming a circular flow after the air flows enter the mixing cavity 11 from the two air intake cavities respectively through the corresponding air intake channels, thereby performing effective dispersion and preheating effects on the sprayed urea droplets, and simultaneously prolonging the heating path of the air flows for the urea droplets, improving the heat utilization efficiency of the tail gas, and enabling the urea droplets to be fully, the urea liquid drops are prevented from falling onto the inner wall surface of the corresponding part to form urea crystals, the risk of urea crystals is reduced, the performance of the post-treatment system is ensured, the emission standard exceeding or the post-treatment system blockage is avoided, and the vehicle power requirement is ensured.
As shown in fig. 1 and 2, the upper plate surface of the front baffle 3, the first air inlet cavity 101 and the second air inlet cavity 102 corresponding to the inside of the housing 1 are respectively provided with an air inlet 31 with a large opening area, the two air inlet holes 31 are over against the first sector plate 51/the second sector plate 61 of the first side baffle 5/the second side baffle 6 and the outer plate surface of the rear shielding part 41 of the rear baffle 4, and the exhaust gas flow enters from the air inlet 31 and directly blows the plate surfaces of the first sector plate 51/the second sector plate 61 and the rear shielding part 41, so that the corresponding plate surfaces can be heated, the dropped urea liquid drops can be fully volatilized by heat absorption, and the risk of urea crystallization is reduced. A plurality of groups of first air supply holes 32 are formed in the front baffle plate 3, between the two air inlet holes 31 and from top to bottom, the first air supply holes 32 are communicated with the mixing cavity 11 and are opposite to the middle plate surface of the rear shielding part 41 of the rear baffle plate 4, and tail gas airflow directly enters the mixing cavity 11 from the first air supply holes 32 to further provide heat for urea liquid drops, so that the urea liquid drops can be fully absorbed by heat and volatilized, the heat utilization efficiency of tail gas is improved, and the risk of urea crystallization is reduced; and the middle plate surface of the shielding part 41 after the air flow entering from the first air supply hole 32 is directly blown can heat the corresponding plate surface, so that the dropped urea liquid drops can fully absorb heat and volatilize, and the risk of urea crystallization is reduced. A plurality of second air supply holes 33 are formed in the lower portion of the front baffle 3 and close to the lower side edge, the second air supply holes 33 are communicated with the air outlet cavity 12, and tail gas airflow can directly enter the air outlet cavity 12 from the second air supply holes 33; on the other hand, the effective flow cross-sectional area of the airflow is increased, the flow resistance of the airflow is reduced, the back pressure of the airflow is reduced, and the pressure loss is further reduced.
When the utility model is used in practice, the urea nozzle in the nozzle seat 2 sprays urea liquid drops into the mixing cavity 11; tail gas gets into first air inlet chamber 101, second air inlet chamber 102 respectively from both sides inlet port 31, then gets into mixing chamber 11 from first inlet channel 423, second inlet channel 433 respectively and mixes with the urea liquid drop, atomizes the evaporation and carries out the pyrolysis with the urea liquid drop, accomplishes the preliminary decomposition and the mixture of urea liquid drop, and the air-mixed flow passes through first orifice plate 7, second orifice plate 8 downwards, and the further decomposition of accomplishing urea liquid drop gets into out gas cavity 12 after mixing, discharges from outlet channel 13.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides an asymmetric aftertreatment mixing arrangement, baffle (3) before setting up in shell (1), the rear side of preceding baffle (3) sets up backplate (4), its characterized in that: the rear baffle (4) is provided with a rear shielding part (41), the lower edge of the rear shielding part (41) is away from the inner wall surface of the lower side of the shell (1) by a certain distance to form an air outlet channel (13) of air flow; two sides of the rear shielding part (41) are respectively bent towards the front baffle (3) to form a first side shielding part (42) and a second side shielding part (43); a first air inlet channel (423) is formed in the first side shielding part (42), and a first side baffle (5) is arranged on the outer side of the first air inlet channel (423); a second air inlet channel (433) is formed in the second side shielding part (43), and a second side baffle (6) is arranged on the outer side of the second air inlet channel (433); the opening area of the first air intake passage (423) is smaller than the opening area of the second air intake passage (433);
the inner cavity of the shell (1) is divided into a first air inlet cavity (101), a second air inlet cavity (102), a mixing cavity (11) and an air outlet cavity (12) by a front baffle (3), a rear baffle (4), a first side baffle (5) and a second side baffle (6); the first air inlet cavity (101) is communicated with the mixing cavity (11) through a first air inlet channel (423), the second air inlet cavity (102) is communicated with the mixing cavity (11) through a second air inlet channel (433), and the cavity volume of the first air inlet cavity (101) is smaller than that of the second air inlet cavity (102);
the front baffle (3) is provided with air inlets (31) corresponding to the first air inlet cavity (101) and the second air inlet cavity (102) respectively.
2. The asymmetric aftertreatment mixing device of claim 1, wherein: the first side shielding part (42) of the rear baffle plate (4) is provided with a first vertical part (421) and a first horizontal part (422), and the second side shielding part (43) is provided with a second vertical part (431) and a second horizontal part (432); the first side baffle (5) is provided with a first fan-shaped plate (51) and a first square plate (52) which are perpendicular to each other, and the second side baffle (6) is provided with a second fan-shaped plate (61) and a second square plate (62) which are perpendicular to each other; the outer side edge of the first side baffle (5)/the second side baffle (6) extends to the inner wall surface of the shell (1), the inner side edge of the first fan-shaped plate (51)/the second fan-shaped plate (61) is connected to the front side edge of the first vertical part (421)/the second vertical part (431), and the inner side edge of the first square plate (52)/the second square plate (62) is connected to the upper side edge of the first horizontal part (422)/the second horizontal part (432).
3. The asymmetric aftertreatment mixing device of claim 1, wherein: the first side baffle (5) and the second side baffle (6) incline obliquely by a certain angle respectively.
4. The asymmetric aftertreatment mixing device of claim 1, wherein: a plurality of groups of first air supply holes (32) are formed in the front baffle (3) and located between the two air inlet holes (31), and the first air supply holes (32) are communicated with the mixing cavity (11).
5. The asymmetric aftertreatment mixing device of claim 4, wherein: the first air supply hole (32) is opposite to the middle plate surface of the rear shielding part (41) of the rear baffle plate (4).
6. The asymmetric aftertreatment mixing device of claim 1, wherein: two air inlets (31) of the front baffle (3) are opposite to the outer side plate surfaces of the first sector plate (51), the second sector plate (61) and the rear shielding part (41).
7. The asymmetric aftertreatment mixing device of claim 1, wherein: the lower part of the front baffle (3) is provided with a plurality of second air supply holes (33), and the second air supply holes (33) are communicated with the air outlet cavity (12).
8. The asymmetric aftertreatment mixing device of claim 1, wherein: a nozzle seat (2) is arranged on the shell (1) and opposite to the mixing cavity (11); a plurality of first pore plates (7) are arranged in the mixing cavity (11), and a plurality of first through holes (71) are formed in the first pore plates (7); an arc-shaped second pore plate (8) is arranged below the first pore plate (7) at the lowest side, and a plurality of second through holes (81) are formed in the second pore plate (8).
9. The asymmetric aftertreatment mixing device of claim 8, wherein: the second orifice plate (8) is concave downwards towards the air outlet cavity (12).
10. The asymmetric aftertreatment mixing device of claim 1, wherein: inside shell (1), be located the rear of air outlet channel (13) and fixedly be provided with guide plate (9), certain distance in interval between guide plate (9) and backplate (4), set up a plurality of third through-holes (91) on the face of guide plate (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022839019.9U CN213510812U (en) | 2020-12-01 | 2020-12-01 | Asymmetric post-processing mixing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022839019.9U CN213510812U (en) | 2020-12-01 | 2020-12-01 | Asymmetric post-processing mixing device |
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| CN213510812U true CN213510812U (en) | 2021-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320545A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
| CN114320546A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
-
2020
- 2020-12-01 CN CN202022839019.9U patent/CN213510812U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320545A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
| CN114320546A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
| CN114320545B (en) * | 2021-12-27 | 2023-09-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas aftertreatment system |
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