CN113623056B - Double-cyclone tight coupling mixer - Google Patents

Double-cyclone tight coupling mixer Download PDF

Info

Publication number
CN113623056B
CN113623056B CN202111080290.1A CN202111080290A CN113623056B CN 113623056 B CN113623056 B CN 113623056B CN 202111080290 A CN202111080290 A CN 202111080290A CN 113623056 B CN113623056 B CN 113623056B
Authority
CN
China
Prior art keywords
pipe
mixing
space
air inlet
wall
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.)
Active
Application number
CN202111080290.1A
Other languages
Chinese (zh)
Other versions
CN113623056A (en
Inventor
张旭
陈增响
付细平
何伟娇
周稳超
陆超俊
张磊
周磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Weifu Lida Catalytic Converter Co Ltd
Original Assignee
Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Weifu Lida Catalytic Converter Co Ltd filed Critical Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority to CN202111080290.1A priority Critical patent/CN113623056B/en
Publication of CN113623056A publication Critical patent/CN113623056A/en
Application granted granted Critical
Publication of CN113623056B publication Critical patent/CN113623056B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention provides a double-rotational-flow tight coupling mixer which comprises an air inlet pipe, a connecting pipe and an air outlet pipe, wherein the air inlet pipe, the connecting pipe and the air outlet pipe are sequentially connected along a first direction; an air inlet space is formed among the inner wall of the air inlet pipe, the outer wall of the connecting pipe and the outer wall of the first mixing pipe, a turbulent flow space is formed among the inner wall of the first mixing pipe and the outer wall of the second mixing pipe, an injection space is formed inside the second mixing pipe to contain urea particles, and an exhaust space is formed between the outer wall of the first mixing pipe and the inner wall of the connecting pipe; the air inlet pipe is provided with a first opening; the peripheral surface of the first mixing pipe is provided with a plurality of air inlets, the edges of the air inlets are provided with blades, and the peripheral surface of the first mixing pipe is provided with a plurality of air outlets; the peripheral surface of the second mixing pipe is provided with a plurality of mixing ports. This application compact structure realizes arranging in narrow and small space, guarantees the mixing efficiency of urea granule and exhaust air current.

Description

Double-cyclone tight coupling mixer
Technical Field
The invention relates to the technical field of diesel engine tail gas aftertreatment, in particular to a double-cyclone tight coupling mixer.
Background
SDPF is a post-treatment route for coating SCR catalyst coating on DPF to realize double-layer function, and is mainly applied to a light diesel vehicle post-treatment system at present.
SDPF must meet the higher NH of SCR system 3 Mixing uniformity requirements to improve NOx conversion efficiency and secondly high flow rate uniformity requirements for DPF systems to reduce soot plugging risk. In addition, due to small amountThe urea crystallization can cause serious DPF blockage, and the crushing effect and the decomposition rate of the urea must be improved as much as possible, so that the crystallization risk of the SDPF is reduced.
Light-duty diesel vehicle generally adopts close coupling formula aftertreatment ware, because the aftertreatment ware is installed in the engine, the design degree of difficulty of blender is big, and the measure that increases mixing distance, increase mixed appearance chamber volume that conventional medium-sized diesel vehicle adopted has been difficult to carry out the exhibition. Therefore, how to realize a mixer with high mixing efficiency, low exhaust back pressure and capable of avoiding urea crystallization in a compact arrangement space is a difficult point in the development process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a double-cyclone tight coupling mixer, which solves the structural arrangement problem in a narrow space, and simultaneously ensures smaller exhaust back pressure and urea crystallization risk and NH at the bottom of intersection 3 The mixing uniformity is good. The technical scheme adopted by the invention is as follows:
a double-cyclone tight coupling mixer comprises an air inlet pipe, a connecting pipe and an air outlet pipe, wherein the air inlet pipe, the connecting pipe and the air outlet pipe are sequentially connected along a first direction, a first mixing pipe and a second mixing pipe are coaxially arranged in the air inlet pipe, the axis of the first mixing pipe and the axis of the second mixing pipe are both parallel to the first direction, the first mixing pipe and the second mixing pipe both extend into the connecting pipe along the first direction, and the diameter of the first mixing pipe is larger than that of the second mixing pipe;
one end of the connecting pipe is a necking end, the necking end is connected with the outer wall of the first mixing pipe, the outer wall of the connecting pipe is connected with the inner wall of one end of the air inlet pipe, an air inlet space is formed among the inner wall of the air inlet pipe, the outer wall of the connecting pipe and the outer wall of the first mixing pipe, a turbulent flow space is formed among the inner wall of the first mixing pipe and the outer wall of the second mixing pipe, an injection space is formed inside the second mixing pipe to contain urea particles, and an exhaust space is formed between the outer wall of the first mixing pipe and the inner wall of the connecting pipe;
the air inlet pipe is provided with a first opening which is communicated with the air inlet space so as to realize that the exhaust airflow flows into the air inlet pipe;
the first mixing pipe is uniformly provided with a plurality of air inlets, the air inlets are communicated with an air inlet space and a turbulent flow space, blades are arranged at the edge of each air inlet to enable exhaust airflow to rotate from the air inlet space to enter the turbulent flow space, and the first mixing pipe is uniformly provided with a plurality of air outlet holes which are communicated with the turbulent flow space and the exhaust space;
a plurality of mixing ports are uniformly formed in the second mixing pipe, and the mixing ports are communicated with the jet space and the turbulent flow space;
the axial one end that the second hybrid tube extends to in the connecting tube is equipped with the blanking cover, the blanking cover extends to first hybrid tube.
Furthermore, a nozzle is arranged on the air inlet pipe and extends into the spraying space along the first direction.
Furthermore, a second opening is formed in the air inlet pipe, the second opening is formed in the first direction, an end cover is arranged in the second opening, and the first mixing pipe and the second mixing pipe are connected with the end cover.
Further, a nozzle base is arranged on the end cover, and the nozzle is arranged on the nozzle base.
Furthermore, a third opening is formed in the air inlet pipe, and the connecting pipe is inserted into the third opening.
Further, the blanking cover comprises a circular plate and a clamping jaw, the circular plate is arranged at one axial end of the second mixing pipe, the circular plate is connected with one end of the clamping jaw, and the other end of the clamping jaw extends towards the inner wall of the first mixing pipe.
Furthermore, a plurality of flow slowing holes are uniformly formed in the circular plate.
Furthermore, a clapboard with holes is arranged on one side of the connecting pipe close to the air outlet pipe.
Further, the shape of the partition board is semicircular or two-thirds circular.
Furthermore, the connecting pipe is of an eccentric structure, and the connecting part of the connecting pipe and the air outlet pipe is bent.
The invention has the advantages that:
this application intake pipe, connecting pipe and outlet duct close coupling, coaxial first hybrid tube and the second hybrid tube of arranging to set up air inlet and blade on first hybrid tube, with the exhaust air current spiral in the injection space send into vortex space, injection space in, the exhaust air current is divided into two parts after getting into the vortex space from the air inlet: one part is positioned in the turbulent flow space, and the other part enters the jet space through the mixing port; meanwhile, the exhaust air flow can exchange in the turbulent flow space and the injection space to drive the urea particles entering the injection space to move together, so that the urea particles move in the turbulent flow space and the injection space in a crossed manner for multiple times, the purpose of double rotational flow of the exhaust air flow is achieved, the mixing effect of the urea particles and the exhaust air flow is effectively improved, and the improvement of the ammonia mixing effect and the reduction of the urea risk are facilitated;
the blocking cover between the first mixing pipe and the second mixing pipe is combined, the flow of exhaust airflow and uremic particles in the second mixing pipe can be limited, the exchange times of the exhaust airflow and uremic particles in a turbulent flow space and an injection space are increased, and the mixing effect of urea particles and the exhaust airflow is further improved.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is a structural view of a first mixing pipe of the present invention.
Fig. 5 is a block diagram of the closure of the present invention.
In the figure: 1-air inlet pipe, 2-connecting pipe, 3-air outlet pipe, 4-first mixing pipe, 5-second mixing pipe, 6-end cover, 7-nozzle base, 8-nozzle, 9-blanking cover, 10-partition plate, 101-first opening, 102-second opening, 103-third opening, 401-air inlet, 402-air outlet, 501-mixing opening, 901-circular plate, 9011-slow flow hole and 902-clamping jaw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the invention provides a dual-swirl tight coupling mixer, which comprises an air inlet pipe 1, a connecting pipe 2 and an air outlet pipe 3, wherein the air inlet pipe 1, the connecting pipe 2 and the air outlet pipe 3 are sequentially connected along a first direction, a first mixing pipe 4 and a second mixing pipe 5 are coaxially arranged in the air inlet pipe 1, the axis of the first mixing pipe 4 and the axis of the second mixing pipe 5 are both parallel to the first direction, the first mixing pipe 4 and the second mixing pipe 5 both extend into the connecting pipe 2 along the first direction, and the diameter of the first mixing pipe 4 is greater than that of the second mixing pipe 5.
The mixer shell is formed by the air inlet pipe 1, the connecting pipe 2 and the air outlet pipe 3, so that the mixer shell is small in size, small in occupied space and more suitable for arrangement of a mixer in a narrow space; the air inlet pipe 1 is connected with the upper-level structure, and the air outlet pipe 3 is connected with the lower-level structure and used in a whole set of tail gas treatment system structure.
One end of the connecting pipe 2 is a necking end, the necking end is connected with the outer wall of the first mixing pipe 4, and the outer wall of the connecting pipe 2 is connected with the inner wall of one end of the air inlet pipe 1; the effect of fixed first hybrid tube 4 is played with 4 outer wall connection of first hybrid tube to the throat end, improves the stability of first hybrid tube 4.
An air inlet space is formed among the inner wall of the air inlet pipe 1, the outer wall of the connecting pipe 2 and the outer wall of the first mixing pipe 4, a turbulent flow space is formed between the inner wall of the first mixing pipe 4 and the outer wall of the second mixing pipe 5, an injection space is formed inside the second mixing pipe 5 to contain urea particles, and an exhaust space is formed between the outer wall of the first mixing pipe 4 and the inner wall of the connecting pipe 2; the interior of the mixer is divided into three spaces by respectively utilizing the connection and the matching among the air inlet pipe 1, the connecting pipe 2, the first mixing pipe 4 and the second mixing pipe 5, and the three spaces are used for leading in exhaust air flow, leading in urea particles, mixing the exhaust air flow and the urea particles and leading out the mixed air flow, so that the guide of the air flow in a compact structure is realized.
A first opening 101 is formed in the air inlet pipe 1, and the first opening 101 is communicated with the air inlet space to enable exhaust airflow to flow into the air inlet pipe 1; the first opening 101 is used for connecting a previous-stage structure, and the exhaust airflow enters the air inlet pipe 1.
Referring to fig. 4, a plurality of air inlets 401 are uniformly disposed on the first mixing tube 4, the air inlets 401 communicate between an air inlet space and a turbulent flow space, blades are disposed at edges of the air inlets 401 to enable exhaust airflow to rotate from the air inlet space to enter the turbulent flow space, a plurality of air outlets 402 are uniformly disposed on the first mixing tube 4, and the air outlets 402 communicate between the turbulent flow space and the air outlet space.
By the limitation of the connection relation between the connecting pipe 2 and the first mixing pipe 4 and under the action of the blades, the exhaust airflow entering the air inlet space can only enter the turbulent flow space from the air inlet 401 in a spiral mode, the exhaust airflow entering the air inlet space in a spiral mode can be better mixed with urea particles compared with linear airflow, the movement track in the turbulent flow space and the injection space is longer, and therefore the mixing effect can be improved.
In this application, first hybrid tube 4 is connected to blade one end, and the other end extends to first hybrid tube 4 outward for the plane at blade place is certain contained angle with air inlet 401 place plane, thereby realizes in the exhaust air current spiral gets into the vortex space.
Referring to fig. 2, a plurality of mixing ports 501 are uniformly formed on the second mixing pipe 5, and the mixing ports 501 communicate the injection space and the turbulent flow space; the mixing port 501 is a slotted elongated hole that provides a more fluid flow path for the urea granules.
Referring to fig. 3, a blocking cover 9 is disposed at an axial end of the second mixing pipe 5 extending into the connecting pipe 2, and the blocking cover 9 extends towards the first mixing pipe 4; first hybrid tube 4 and second hybrid tube 5 are connected simultaneously to blanking cap 9, conveniently fix second hybrid tube 5, and blanking cap 9 can restrict the flow of exhaust air current and urea granule in second hybrid tube 5 simultaneously, strengthens the exhaust air current and the motion repeatedly of urea granule in vortex space and injection space, effectively improves the mixed effect of urea granule and exhaust air current, helps the promotion of ammonia mixing effect, helps the reduction of urea crystallization risk.
Referring to fig. 1-2, a nozzle 8 is disposed on the air inlet pipe 1, and the nozzle 8 extends into the injection space along a first direction; the nozzle 8 is used for spraying urea aqueous solution into the spraying space, and the urea aqueous solution is atomized and sprayed by the nozzle 8 to be refined into urea particles and then is mixed with the exhaust gas flow.
Referring to fig. 2-3, a second opening 102 is formed in the air inlet pipe 1, the second opening 102 is formed along a first direction, an end cover 6 is disposed in the second opening 102, and the first mixing pipe 4 and the second mixing pipe 5 are both connected to the end cover 6; the end cover 6 is provided with a nozzle base 7, and the nozzle 8 is arranged on the nozzle base 7; the end cover 6 provides an installation carrier for the first mixing pipe 4, the second mixing pipe 5 and the nozzle base 7 at the same time, so that the first mixing pipe 4, the second mixing pipe 5 and the nozzle base 7 can be conveniently installed and positioned.
The air inlet pipe 1 is provided with a third opening 103, and the connecting pipe 2 is inserted into the third opening 103; the third opening 103 facilitates the insertion positioning of the connection tube 2.
Referring to fig. 2 and 5, the blocking cover 9 includes a circular plate 901 and a clamping jaw 902, the circular plate 901 is disposed at one axial end of the second mixing pipe 5, one end of the clamping jaw 902 is connected to the circular plate 901, and the other end of the clamping jaw 902 extends towards the inner wall of the first mixing pipe 4; the claws 902 abut against or are welded to the inner wall of the first mixing pipe 4, and leave gaps in the radial section of the first mixing pipe 4, thereby playing a role in slowing flow.
As an embodiment of the present application, a plurality of slow flow holes 9011 are uniformly arranged on the circular plate 901; further slow flow through setting up slow flow hole 9011, strengthen mixing effect, increase the number of times that urea granule and exhaust air flow in injection space and vortex space repeatedly.
Referring to fig. 2-3, a partition plate 10 with holes is arranged at one side of the connecting pipe 2 close to the air outlet pipe 3; baffle 10 can adjust the distribution of exhaust air current and urea granule, makes the air current after the mixture get into the terminal surface of the more even distribution of back one-level structure in the outlet duct 3, helps promoting the mixed effect of ammonia.
As an example of the present application, the shape of the separator 10 is a semicircle or a two-thirds circle.
In the application, the connecting pipe 2 is of an eccentric structure, and the connecting part of the connecting pipe 2 and the air outlet pipe 3 is bent; the curved installation direction that adapts to outlet duct 3 of connecting pipe 2 matches next stage structure, and the air current after the guide mixes simultaneously improves the distribution condition of exhaust air current and urea at next stage structure terminal surface, changes the air current direction of motion after the mixture, avoids the air current to blow directly, strengthens mixing effect.
The working principle is as follows:
in the exhaust air current got into the air inlet space through first opening 101 on the intake pipe 1, nozzle 8 atomized urea aqueous solution and sprayed to the jet space and form the urea granule, exhaust air current gets into in the vortex space through air inlet 401 spiral under the effect of blade, a part exhaust air current mixes with the urea granule in getting into the jet space through mixing mouth 501, the air current of mixture after mixing is the reciprocal many times through vortex space and jet space of heliciform, at last from venthole 402 on the first hybrid tube 4, the slow flow hole 9011 and the jack catch 902 on the blanking cover 9 and the clearance between the first hybrid tube 4 get into the exhaust space, through the vortex of baffle 10 and the guide effect of connecting pipe 2, get into next grade structure from outlet duct 3.
To sum up, this application compact structure can arrange the tight coupling blender of spiral mixing urea granule in narrow and small space, is applicable to complicated whole car more and arranges the space in, promotes the mixed effect of ammonia, reduces urea crystallization risk, satisfies the requirement of six B second stage emission regulations in state.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a tight coupling blender of bispin flow, includes intake pipe (1), connecting pipe (2) and outlet duct (3), intake pipe (1), connecting pipe (2) and outlet duct (3) connect gradually its characterized in that along first direction: a first mixing pipe (4) and a second mixing pipe (5) are coaxially arranged in the air inlet pipe (1), the axis of the first mixing pipe (4) and the axis of the second mixing pipe (5) are both parallel to the first direction, the first mixing pipe (4) and the second mixing pipe (5) both extend into the connecting pipe (2) along the first direction, and the diameter of the first mixing pipe (4) is larger than that of the second mixing pipe (5);
one end of the connecting pipe (2) is a necking end, the necking end is connected with the outer wall of the first mixing pipe (4), the outer wall of the connecting pipe (2) is connected with the inner wall of one end of the air inlet pipe (1), an air inlet space is formed among the inner wall of the air inlet pipe (1), the outer wall of the connecting pipe (2) and the outer wall of the first mixing pipe (4), a turbulent flow space is formed among the inner wall of the first mixing pipe (4) and the outer wall of the second mixing pipe (5), an injection space is formed inside the second mixing pipe (5) to contain urea particles, and an exhaust space is formed between the outer wall of the first mixing pipe (4) and the inner wall of the connecting pipe (2);
a first opening (101) is formed in the air inlet pipe (1), and the first opening (101) is communicated with the air inlet space to enable exhaust airflow to flow into the air inlet pipe (1);
a plurality of air inlets (401) are uniformly arranged on the first mixing pipe (4), the air inlets (401) are communicated with an air inlet space and a turbulent flow space, blades are arranged at the edge of the air inlets (401) to enable exhaust airflow to rotate from the air inlet space to enter the turbulent flow space, a plurality of air outlets (402) are uniformly arranged on the first mixing pipe (4), and the air outlets (402) are communicated with the turbulent flow space and the exhaust space;
a plurality of mixing ports (501) are uniformly formed in the second mixing pipe (5), and the mixing ports (501) are communicated with the injection space and the turbulent flow space;
one axial end of the second mixing pipe (5) extending into the connecting pipe (2) is provided with a blocking cover (9), and the blocking cover (9) extends towards the first mixing pipe (4);
the blocking cover (9) comprises a circular plate (901) and a clamping jaw (902), the circular plate (901) is arranged at one axial end of the second mixing pipe (5), one end of the clamping jaw (902) is connected with the circular plate (901), and the other end of the clamping jaw (902) extends towards the inner wall of the first mixing pipe (4);
a plurality of slow flow holes (9011) are uniformly formed in the circular plate (901);
a clapboard (10) with holes is arranged at one side of the connecting pipe (2) close to the air outlet pipe (3);
the shape of the clapboard (10) is semicircular or two-thirds circular;
the connecting pipe (2) is of an eccentric structure, and the joint of the connecting pipe (2) and the air outlet pipe (3) is bent.
2. The dual-swirl close-coupled mixer of claim 1, wherein: be equipped with nozzle (8) on intake pipe (1), nozzle (8) extend to in the jet space along first direction.
3. The dual-swirl close-coupled mixer of claim 2, wherein: the air inlet pipe (1) is provided with a second opening (102), the second opening (102) is formed in the first direction, an end cover (6) is arranged in the second opening (102), and the first mixing pipe (4) and the second mixing pipe (5) are connected with the end cover (6).
4. The dual cyclone close-coupled mixer of claim 3 wherein: the end cover (6) is provided with a nozzle base (7), and the nozzle (8) is arranged on the nozzle base (7).
5. The dual cyclone close-coupled mixer of claim 1 wherein: and a third opening (103) is formed in the air inlet pipe (1), and the connecting pipe (2) is inserted into the third opening (103).
CN202111080290.1A 2021-09-15 2021-09-15 Double-cyclone tight coupling mixer Active CN113623056B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111080290.1A CN113623056B (en) 2021-09-15 2021-09-15 Double-cyclone tight coupling mixer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111080290.1A CN113623056B (en) 2021-09-15 2021-09-15 Double-cyclone tight coupling mixer

Publications (2)

Publication Number Publication Date
CN113623056A CN113623056A (en) 2021-11-09
CN113623056B true CN113623056B (en) 2023-01-10

Family

ID=78390087

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111080290.1A Active CN113623056B (en) 2021-09-15 2021-09-15 Double-cyclone tight coupling mixer

Country Status (1)

Country Link
CN (1) CN113623056B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114382571B (en) * 2022-01-27 2023-04-07 无锡威孚力达催化净化器有限责任公司 Layering crushing urea mixing device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017113357A1 (en) * 2017-06-19 2018-12-20 Volkswagen Aktiengesellschaft Exhaust pipe, internal combustion engine and motor vehicle
CN109386355B (en) * 2017-08-14 2022-05-24 波森公司 Mixer device and exhaust gas system
CN108119211A (en) * 2017-12-23 2018-06-05 无锡威孚力达催化净化器有限责任公司 A kind of close-coupled mixing arrangement for meeting six discharge standard of Europe
DE112018007799T5 (en) * 2018-07-03 2021-03-25 Cummins Emission Solutions Inc. DECOMPOSITION REACTOR WITH BODY MIXTURE
CN109578120A (en) * 2018-09-14 2019-04-05 天纳克（苏州）排放系统有限公司 Exhaust aftertreatment mixing arrangement
CN109505685A (en) * 2019-01-16 2019-03-22 无锡威孚力达催化净化器有限责任公司 The tilting cartridge type urea mixer of double-cyclone and its application in exhaust gas post-treatment device
CN210343456U (en) * 2019-07-25 2020-04-17 无锡威孚力达催化净化器有限责任公司 Double-layer spiral-flow tube type urea injection mixing unit

Also Published As

Publication number Publication date
CN113623056A (en) 2021-11-09

Similar Documents

Publication Publication Date Title
WO2016146015A1 (en) Mixing tube and exhaust gas treatment device thereof
CN111764987B (en) Post-treatment packaging SCR mixer system and treatment method thereof
CN113586212B (en) Mixing device with multi-cyclone structure
CN110410185A (en) A kind of crystallization-preventive close-coupled urea mixing device
CN111156072B (en) Tail gas aftertreatment mixing arrangement
CN112983604B (en) SCR urea solution mixer
CN110332034B (en) Vertical SCR post-treatment urea mixing device
CN111779558A (en) Urea mixer for U-shaped large end cover
CN113623056B (en) Double-cyclone tight coupling mixer
CN206987928U (en) Exhaust aftertreatment mixing arrangement and its encapsulation
CN109578120A (en) Exhaust aftertreatment mixing arrangement
CN209838505U (en) Radial injection close-coupled mixing device for mixing reducing agent fluid
CN109356693B (en) Compact mixer assembly
CN207960732U (en) Close coupling SCR clarifiers and rotation conflux formula urea mixed cell for light-duty diesel vehicle
CN207686804U (en) Eddy flow urea mixing device
CN112459878A (en) Novel high-efficient vortex that mixes of six standards SCR systems of satisfying state device
CN109854345B (en) SCR aftertreatment urea mixing arrangement
CN104975920B (en) A kind of SCR system and its box catalytic muffler
CN214741574U (en) Spiral-flow type mixer for purifying automobile exhaust
CN111810278A (en) Radial injection close-coupled mixing device for mixing reducing agent fluid
CN205779138U (en) Engine exhaust aftertreatment assembly
CN111963281B (en) High-efficient blender of diesel engine aftertreatment
CN112081646B (en) Tail gas treatment mixing arrangement and tail gas treatment system
CN210343459U (en) Vertical SCR (Selective catalytic reduction) aftertreatment urea mixing device
CN211851966U (en) Vehicle postprocessor and air flow mixer thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant