CN216406939U - Cartridge aftertreatment SCR mixer adapted for vertical arrangement - Google Patents
Cartridge aftertreatment SCR mixer adapted for vertical arrangement Download PDFInfo
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- CN216406939U CN216406939U CN202122800444.1U CN202122800444U CN216406939U CN 216406939 U CN216406939 U CN 216406939U CN 202122800444 U CN202122800444 U CN 202122800444U CN 216406939 U CN216406939 U CN 216406939U
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Abstract
The utility model discloses a cylindrical post-processor SCR mixer suitable for vertical arrangement, which comprises a post-processor mixer cylinder, a U-shaped mixing pipe and a partition plate, wherein a urea nozzle for spraying urea into the U-shaped mixing pipe is arranged on the post-processor mixer cylinder; the clapboard is sleeved on the U-shaped mixing tube to divide the inner cavity into a first cavity and a second cavity; the U-shaped mixing pipe comprises a first pipe body arranged in the first cavity, a middle pipe body and a second pipe body arranged in the second cavity, the middle pipe body is communicated with the first pipe body and the second pipe body, and urea spray of the urea nozzle enters an opening at one end of the first pipe body; the axis of the first tube is higher than the axis of the second tube when the axis of the aftertreater mixer cartridge is in a vertical orientation. In the utility model, the U-shaped mixing pipe is obliquely arranged, and the wall film gravity of the urea solution impacting the wall flows to the rear part of the mixer due to the oblique component generated by the oblique pipeline, so that the urea solution can be prevented from depositing and crystallizing, and the vertical arrangement is suitable.
Description
Technical Field
The utility model relates to the technical field of vehicle denitration, in particular to a cylindrical post-processor SCR mixer suitable for vertical arrangement.
Background
Selective Catalytic Reduction (SCR) refers to Selective Reduction of a reducing agent (e.g., NH3, liquid ammonia, urea) in the presence of a catalystSex with NO in flue gasxReacting and generating nontoxic and pollution-free N2And H2And O. Automotive exhaust systems include an injection system that injects a Diesel Exhaust Fluid (DEF) or a reducing agent, such as a solution of urea and water, upstream of an SCR catalyst (selective catalytic reduction catalyst). A mixer is positioned upstream of the SCR catalyst and mixes the engine exhaust gases and the urea conversion products.
Various SCR mixers are described in the prior art, for example: the chinese utility model patent with the publication number CN 205370704U discloses an SCR intake mixer; chinese patent application publication No. CN 107530655 a discloses a full-rotation mixer. However, the above patents all have the following disadvantages: the structure of the existing drum-type after-treatment device is only suitable for a flat arrangement, and if the drum-type after-treatment device is vertically arranged, the wall film falls and gathers under the action of weight when the urea spray and the mixer collide with the wall film to form the wall film, and urea crystals are formed.
Disclosure of Invention
The utility model aims to provide a cylindrical after-treatment device SCR mixer suitable for vertical arrangement, which can solve the problem that urea crystallization is easy to generate when the cylindrical after-treatment device SCR mixer is vertically arranged.
In order to achieve the purpose, the utility model adopts the technical scheme that: a cylindrical post-processor SCR mixer suitable for vertical arrangement comprises a post-processor mixer cylinder, wherein a U-shaped mixing pipe and a partition plate are arranged in the inner cavity of the post-processor mixer cylinder, and a urea nozzle for spraying urea mist into the U-shaped mixing pipe is arranged on the post-processor mixer cylinder; the baffle plate is sleeved on the U-shaped mixing tube and is arranged in the inner cavity of the post-processor mixer cylinder body so as to divide the inner cavity of the post-processor mixer cylinder body into a first cavity and a second cavity; the U-shaped mixing pipe comprises a first pipe body, an intermediate pipe body and a second pipe body, the first pipe body, the intermediate pipe body and the second pipe body are arranged in the first cavity, the intermediate pipe body is arranged between the first pipe body and the second pipe body and is communicated with the first pipe body and the second pipe body, and urea spray of the urea nozzle enters an opening at one end of the first pipe body; when the axis of the aftertreatment mixer cartridge is in a vertical direction, the axis of the first tube is higher than the axis of the second tube.
In one embodiment, the partitions are metal flaps.
In one embodiment, the partition plate includes a first plate portion, a second plate portion, and a third plate portion, and a projection of the first plate portion and the second plate portion, and a projection of the second plate portion and the third plate portion on a plane perpendicular to an axis of the first pipe body form a certain angle; and the second plate part is provided with a mounting hole through which the second pipe body passes.
In one embodiment, projections of the first plate portion and the second plate portion, and projections of the second plate portion and the third plate portion on a plane perpendicular to an axis of the first tube form an obtuse angle.
In one embodiment, the first plate portion and the third plate portion are parallel to each other and both perpendicular to the axis of the aftertreatment mixer cartridge.
In one embodiment, the axis of the first pipe body is perpendicular to the axis of the post-processor mixer cylinder, the first pipe body comprises a plurality of swirl plates, the swirl plates surround the axis of the first pipe body to form a pipe shape, an air inlet groove is arranged between every two adjacent swirl plates, and the air inlet groove is communicated with the first cavity and the inside of the first pipe body; the cross section of spinning disk perpendicular to the axis direction of first body is the dogleg.
In one embodiment, the axis of the second pipe body is parallel to the axis of the first pipe body, a plurality of circulation holes are formed in the pipe wall of the second pipe body, the circulation holes are arranged at intervals along the circumferential direction and the axial direction of the outer wall of the second pipe body, and the circulation holes are communicated with the inside of the second pipe body and the second cavity.
In one embodiment, a cyclone is further disposed within the second chamber and is secured downstream of the second tube in a manner perpendicular to the axis of the aftertreatment mixer cartridge.
In one embodiment, the swirler comprises a swirler body, a plurality of through holes are formed in the middle of the swirler body, a plurality of swirl holes are formed around the outer periphery of the through holes, and each swirl hole is provided with a swirl guide plate which is obliquely arranged.
The utility model has the beneficial effects that: in the cylindrical post-processor SCR mixer suitable for vertical arrangement, the U-shaped mixing pipe is arranged obliquely to the axis of the cylindrical body of the post-processor mixer, and the wall film of the urea solution impacting the wall can fully utilize the oblique component and the exhaust sweeping force of gravity generated by an oblique pipeline to enable the wall film to flow towards the back of the mixer and be heated and decomposed while flowing, so that the urea solution can be prevented from depositing and crystallizing, and the cylindrical post-processor SCR mixer is suitable for vertical arrangement.
Drawings
Specific embodiments of the present invention will now be described in detail below with reference to the accompanying drawings. It is to be understood that the drawings are not necessarily to scale and that the drawings are merely illustrative of exemplary embodiments of the disclosure and are not to be considered limiting of the scope of the disclosure. In the drawings:
FIG. 1 is a schematic perspective view of a vertically arranged barrel aftertreatment SCR mixer according to a preferred embodiment of the present invention;
FIG. 2 is a side view of the barrel aftertreatment SCR mixer of FIG. 1 adapted for vertical placement;
FIG. 3 is a cross-sectional view of the cylindrical aftertreatment SCR mixer of FIG. 1 adapted for vertical arrangement, in a direction perpendicular to the axis of the first tubular body of the U-shaped mixing tube through the processor mixer cylinder;
FIG. 4 is a cross-sectional view of the cylindrical aftertreatment SCR mixer of FIG. 1 adapted for vertical arrangement, in a direction through the processor mixer cylinder and parallel to the axis of the first tubular body of the U-shaped mixing tube;
FIG. 5 is an assembled perspective view of a U-shaped mixing tube and baffle in the barrel aftertreatment SCR mixer adapted for vertical arrangement of FIG. 1;
FIG. 6 is a top view of the U-shaped mixing tube and baffle of FIG. 5;
FIG. 7 is a perspective view of a U-shaped mixing tube of the drum aftertreatment SCR mixer of FIG. 1 adapted for vertical arrangement;
FIG. 8 is a perspective view of a bulkhead of the barrel aftertreatment SCR mixer of FIG. 1 adapted for vertical placement;
FIG. 9 is a perspective view of a swirler of the barrel aftertreatment SCR mixer of FIG. 1 adapted for vertical arrangement;
FIG. 10 is a side view of the cyclone of FIG. 9.
The elements in the figures are numbered as follows: a mixer 100; a post-processor mixer cartridge 1 (wherein, a first cavity 1.1, a second cavity 1.2); a U-shaped mixing pipe 2 (wherein, a first pipe body 2.1, a middle pipe body 2.2, a second pipe body 2.3, a cyclone sheet 2.11, an air inlet groove 2.12 and a circulation hole 2.31); the partition 3 (among them, the first plate 3.1, the second plate 3.2, the third plate 3.3, the mounting hole 3.44); a swirler 4 (wherein, a swirler body 4.1, a through hole 4.2, a swirl guide plate 4.3 and a swirl hole 4.4); a urea nozzle 5.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be in the singular but may also be in the plural.
It should be noted that although the terms "first," "second," "top," "bottom," "side," "other," "end," "other end," and the like may be used and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other.
Further, in constituting the component, although it is not explicitly described, it is understood that a certain error region is necessarily included.
In describing positional relationships, for example, when positional sequences are described as being "on.. above", "over.. below", "below", and "next", unless such words or terms are used as "exactly" or "directly", they may include cases where there is no contact or contact therebetween. If a first element is referred to as being "on" a second element, that does not mean that the first element must be above the second element in the figures. The upper and lower portions of the member will change depending on the angle of view and the change in orientation. Thus, in the drawings or in actual construction, if a first element is referred to as being "on" a second element, it can be said that the first element is "under" the second element and the first element is "over" the second element. In describing temporal relationships, unless "exactly" or "directly" is used, the description of "after", "subsequently", and "before" may include instances where there is no discontinuity between steps.
According to the cylindrical post-processor SCR mixer suitable for vertical arrangement, the mixer is designed in a connecting cavity between a vehicle DPF (Diesel Particulate Filter, also called a Diesel Particulate trap regenerator) and an SCR (selective catalytic reduction), a cyclone is designed in a front section pipe of a U-shaped tank through a U-shaped flow channel, so that interaction between airflow and urea mist beams is realized, mixing of urea mist and exhaust gas is increased, and the urea mist beams are prevented from colliding with the wall too early through designing the urea mist spray angle, so that the risk of crystallization is avoided; the middle section of the U-shaped mixing pipe adopts an inclined design, and the wall film of the urea solution impacting the wall can fully utilize the inclined component and the exhaust blowing force of gravity generated by an inclined pipeline, so that the wall film flows towards the rear of the mixer, and is heated and decomposed while flowing, thereby avoiding the urea solution from depositing and crystallizing, and being very suitable for a vertically arranged cylinder type post-processor; the rear section of the U-shaped mixing pipe is provided with a perforated pipe, so that the urea fog beam and the exhaust gas are fully mixed, and the requirement of ammonia uniformity in the mixer is met.
Referring to fig. 1 to 4, a vertically arranged cylindrical post-processor SCR mixer 100 according to an embodiment of the present invention includes a post-processor mixer cylinder 1, and the post-processor mixer cylinder 1 has a hollow straight cylindrical structure. The inner cavity of the post-processor mixer barrel 1 is provided with a U-shaped mixing tube 2, a partition plate 3 and a swirler 4, the U-shaped mixing tube 2 and the partition plate 3 being arranged in the inner cavity of the post-processor mixer barrel 1 obliquely to the axial direction of the post-processor mixer barrel 1 (as shown in fig. 3). The baffle 3 is sleeved on the U-shaped mixing tube 2, and the baffle 3 divides the inner cavity of the post-processor mixer cylinder 1 into a first cavity 1.1 and a second cavity 1.2. One or several cyclones 4 are arranged in the second chamber 1.2. The outer wall of the post-processor mixer cylinder 1 is provided with a urea nozzle 5 for spraying urea spray into the post-processor mixer cylinder, and the urea nozzle 5 sprays urea spray into an opening at one end of the U-shaped mixing tube 2.
Referring to fig. 5, 6 and 7, the U-shaped mixing tube 2 is U-shaped as a whole, and includes a first tube 2.1, an intermediate tube 2.2 and a second tube 2.3 connected in sequence, wherein the intermediate tube 2.2 is disposed between the first tube 2.1 and the second tube 2.3 for communicating the first tube 2.1 and the second tube 2.3 through an arc-shaped tube. The cross sections of the first pipe body 2.1, the middle pipe body 2.2 and the second pipe body 2.3 are all circular structures. First body 2.1 is located first cavity 1.1, and second body 2.3 is located second cavity 1.2, and first body 2.1 and second body 2.3 pass 3 transitional coupling of baffle through middle body 2.2, and middle body 2.2 runs through baffle 3 and both ends respectively with first body 2.1, second body 2.3 fixed connection. The urea nozzle 5 is communicated with the upper end opening of the first pipe body 2.1 of the U-shaped mixing pipe 2 and sprays urea spray inwards.
The axis of the first pipe body 2.1 of the U-shaped mixing pipe 2 is perpendicular to the axis direction of the mixer barrel body 1 of the postprocessor, and comprises a plurality of cyclone sheets 2.11 arranged around the axis of the U-shaped mixing pipe 2, the cyclone sheets 2.11 are spaced to form a pipe shape, an air inlet groove 2.12 is reserved between the two adjacent cyclone sheets 2.11, the air inlet groove 2.12 is communicated with the first cavity 1.1 and the first pipe body 2.1, and gas entering the first cavity 1.1 is mixed with urea spray in the first pipe body 2.1 after being subjected to cyclone flow. More specifically, the spinning disk 2.11 is the zigzag board, and spinning disk 2.11 is the dogleg in the cross-section of the axis direction of the first body 2.1 of perpendicular to the exhaust that will get into in the first cavity 1.1 gets into in the first body 2.1 and mixes with the urea spraying that gets into in the first body 2.1 from urea nozzle 5 from the inlet scoop 2.12 between two adjacent spinning disks 2.11.
The axis of the second pipe body 2.3 of the U-shaped mixing pipe 2 is perpendicular to the axis direction of the post-processor mixer cylinder body 1 and is parallel to the axis of the first pipe body 2.1, a plurality of circulation holes 2.31 are formed in the pipe wall, and a plurality of circulation holes 2.11 are arranged at intervals along the circumferential direction and the axial direction of the outer wall of the second pipe body 2.3. The circulation hole 2.11 communicates the second pipe 2.3 and the second cavity 1.2, and introduces the mixed gas in the second pipe 2.3 into the second cavity 1.2 outside the second pipe 2.3. In the shown embodiment the flow openings 2.11 are circular in shape.
In the mixed venturi tube 2 of U-shaped, the axis of first body 2.1 is less than the axis of second body 2.3 to the gaseous inlet of aftertreatment ware mixer barrel 1 to the distance of the axis of aftertreatment ware mixer barrel 1, thus, under the unchangeable prerequisite of axial length of aftertreatment ware mixer barrel 1, the gaseous inlet of aftertreatment ware mixer barrel 1 is to first body 2.1, second body 2.2 can obtain longer distance to the gaseous inlet homoenergetic of aftertreatment ware mixer barrel 1, increased gaseous circulation length under the prerequisite that does not increase overall length, can make the mixture more abundant, also make the structure of blender 100 compacter (height when reducing vertical layout). Moreover, when the mixer 100 is vertically arranged, the axis of the first pipe body 2.1 is higher than the axis of the second pipe body 2.3, so that the wall film of the urea solution hitting the wall can flow towards the back of the U-shaped mixing pipe 2 (flow from the first pipe body 2.1 to the second pipe body 2.3) by fully utilizing the oblique component and the exhaust sweeping force of gravity caused by the inclined pipeline, and the wall film is heated and decomposed while flowing, thereby avoiding the deposition and crystallization of the urea solution.
Referring to fig. 5, 6 and 8, the partition plate 3 may be made of a metal material, the partition plate 3 is provided with a mounting hole 3.4 for the U-shaped mixing tube 2 to pass through, and the U-shaped mixing tube 2 (the intermediate tube body 2.2) is welded and fixed to the mounting hole 3.4 of the partition plate 3.
In order to make the structure of the mixer 100 more compact (reduce the height in the vertical arrangement), the partition 3 is a folded plate structure, which includes a first plate portion 3.1, a second plate portion 3.2 and a third plate portion 3.3, and projections of the first plate portion 3.1 and the second plate portion 3.2, and the second plate portion 3.2 and the third plate portion 3.3 on a plane perpendicular to the axis of the first tube 2.1 form an angle (an obtuse angle in the illustrated embodiment).
In the illustrated embodiment, the first plate portion 3.1 and the third plate portion 3.3 are parallel to each other and perpendicular to the axis of the aftertreatment mixer cartridge 1, and the second plate portion 3.2 connects the first plate portion 3.1 and the third plate portion 3.3 obliquely, so that the welded connection of the partition 3 to the aftertreatment mixer cartridge 1 is more convenient to handle. Mounting holes 3.4 are opened in the second plate portion 3.2 for the second tubular body 2.2 to pass therethrough. Because the second plate portion 3.2 is welded and fixed with the second pipe body 2.2 at the mounting hole 3.4, the included angle between the second plate portion 3.2 and the second pipe body 2.2 is not too small, otherwise, the welding operation is not used, and the welding is easy to cause the welding failure.
Referring to fig. 9 and 10 in combination, a cyclone 4 may be provided in the second chamber 2.2 of the aftertreatment mixer cartridge 1, the cyclone 4 being fixed downstream of the second tube 2.3 in a manner perpendicular to the axis of the aftertreatment mixer cartridge 1. The swirler 4 comprises a swirler body 4.1, a plurality of through holes 4.2 are formed in the middle of the swirler body 4.1, a plurality of swirl holes 4.4 are formed around the periphery of the through holes 4.2, and each swirl hole 4.4 is provided with a swirl guide plate 4.3 which is obliquely arranged. The rear end of the mixer 100 is provided with a plurality of cyclones 4 for fully mixing urea droplets with exhaust gas, thereby improving the uniformity of ammonia mixing.
In the illustrated embodiment, four through holes 4.2 are formed in the middle of the cyclone body 4.1, the four through holes 4.2 are arranged in two rows and two columns, and the opening shape of the through hole 4.2 is circular in this embodiment. The whirl hole 4.4 encircles the periphery that sets up at four through-holes 4.2, and in this embodiment, the periphery of four through-holes 4.2 is provided with two circles of whirl holes 4.4 around the ring, and first circle whirl hole 4.4 is provided with 6, and 6 whirl holes 4.4 interval evenly arrange into first circle. Each swirl hole 4.4 of the first ring is provided with a swirl guide plate 4.3 in an inclined mode, one end of each swirl guide plate 4.3 is fixedly connected with one end of each swirl hole 4.4 of the first ring, and the other end of each swirl hole extends upwards in an inclined mode. The cyclone holes 4.4 are rectangular, the cyclone guide plates 4.3 are also rectangular, and the planes of the cyclone guide plates 4.3 and the cyclone holes 4.4 are arranged at acute angles. In this embodiment, the outer ring of the swirl holes 4.4 of the first ring is further provided with swirl holes 4.4 of the second ring, the number of the swirl holes 4.4 of the second ring is 8, and the 8 swirl holes 4.4 are uniformly arranged at intervals to form the second ring. Each first circle of swirl holes 4.4 of the second circle is provided with a swirl guide plate 4.3 in an inclined mode, one end of each swirl guide plate 4.3 is fixedly connected with one end of each first circle of swirl holes 4.4, and the other end of each swirl guide plate extends upwards in an inclined mode. The cyclone holes 4.4 are rectangular, the cyclone guide plates 4.3 are also rectangular, and the planes of the cyclone guide plates 4.3 and the cyclone holes 4.4 are arranged at acute angles.
In the above-described vertically arranged cartridge-type aftertreatment SCR mixer 100, the urea spray is injected into the aftertreatment mixer cartridge 1 via the urea nozzle 5 and enters the U-shaped mixing tube 2 from the upper end opening of the first tube 2.1. Waste gas entering the first cavity 1.1 from one side of the post-processor mixer cylinder 1 is blocked by the partition plate 3 and is gathered in the first cavity 1.1. Waste gas in the first cavity 1.1 enters the first pipe body 2.1 through the air inlet groove 2.12 between two adjacent vortex sheets 2.11 in a vortex mode, and urea spray meets the waste gas of high temperature and is atomized rapidly and mixed with the waste gas. The swirl vanes 2.11 cause the air stream to interact with the urea spray beam, increasing the mixing of the urea spray and the exhaust. By designing the spray angle of the urea mist from the urea nozzle 5, the urea mist can be prevented from prematurely hitting the wall, thereby avoiding the risk of crystallization. The middle pipe body 2.2 of the U-shaped mixing pipe 2 is arranged obliquely to the axis of the post-processor mixer cylinder 1, and the wall film of the urea solution impacting the wall can fully utilize the oblique component and the exhaust blowing force of gravity generated by an oblique pipeline, so that the wall film flows towards the rear of the mixer, and is heated and decomposed while flowing, and the urea solution can be prevented from being deposited and crystallized. The second pipe body 2.3 at the rear section of the U-shaped mixing pipe 2 is a perforated pipe, so that the urea fog beam and the exhaust gas are fully mixed, and the requirement of ammonia uniformity in the mixer is met. The mixed gas from the second pipe 2.3 passes through the cyclone 4, so that the urea mist and the exhaust gas are fully mixed again, and the requirement of ammonia uniformity in the mixer is met.
Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims.
The shapes, sizes, ratios, angles, and numbers disclosed to describe aspects of the specification and claims are examples only, and thus, the specification and claims are not limited to the details shown. In the following description, when a detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present specification and claims, the detailed description will be omitted.
The above-described embodiments of the present invention only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A cartridge aftertreatment SCR mixer adapted for vertical arrangement, characterized by: the device comprises a post-processor mixer cylinder (1), wherein a U-shaped mixing pipe (2) and a partition plate (3) are arranged in the inner cavity of the post-processor mixer cylinder (1), and a urea nozzle (5) for spraying urea spray into the U-shaped mixing pipe (2) is arranged on the post-processor mixer cylinder (1); the clapboard (3) is sleeved on the U-shaped mixing tube (2) and is arranged in the inner cavity of the post-processor mixer cylinder (1) to divide the inner cavity of the post-processor mixer cylinder (1) into a first cavity (1.1) and a second cavity (1.2); the U-shaped mixing pipe (2) comprises a first pipe body (2.1) arranged in the first cavity (1.1), an intermediate pipe body (2.2) and a second pipe body (2.3) arranged in the second cavity (1.2), the intermediate pipe body (2.2) is arranged between the first pipe body (2.1) and the second pipe body (2.3) and communicated with the first pipe body (2.1) and the second pipe body (2.3), and urea spray of the urea nozzle (5) enters an opening at one end of the first pipe body (2.1); when the axis of the post-processor mixer drum (1) is in the vertical direction, the axis of the first pipe (2.1) is higher than the axis of the second pipe (2.3).
2. The vertically adapted barrel aftertreatment SCR mixer of claim 1, wherein: the clapboard (3) is a metal folded plate.
3. The vertically adapted barrel aftertreatment SCR mixer of claim 1, wherein: the partition plate (3) comprises a first plate part (3.1), a second plate part (3.2) and a third plate part (3.3), and the projections of the first plate part (3.1) and the second plate part (3.2) and the third plate part (3.3) on a plane perpendicular to the axis of the first pipe body (2.1) form a certain angle; and the second plate part (3.2) is provided with a mounting hole (3.4) through which the second pipe body (2.2) passes.
4. A drum aftertreatment SCR mixer adapted for vertical arrangement according to claim 3, characterized in that: the projections of the first plate part (3.1) and the second plate part (3.2) and the projections of the second plate part (3.2) and the third plate part (3.3) on a plane perpendicular to the axis of the first pipe body (2.1) form an obtuse angle.
5. The vertically arranged barrel aftertreatment SCR mixer of claim 4, wherein: the first plate (3.1) and the third plate (3.3) are parallel to each other and both perpendicular to the axis of the aftertreatment mixer cartridge (1).
6. A vertically arranged barrel aftertreatment SCR mixer according to any of claims 1 to 5, characterized in that: the axis of the first pipe body (2.1) is perpendicular to the axis of the postprocessor mixer barrel body (1), the first pipe body (2.1) comprises a plurality of spinning disks (2.11), the spinning disks (2.11) surround the axis of the first pipe body (2.1) to form a pipe shape, an air inlet groove (2.12) is formed between every two adjacent spinning disks (2.11), and the air inlet groove (2.12) is communicated with the first cavity (1.1) and the inside of the first pipe body (2.1); the cross section of the rotational flow sheet (2.11) perpendicular to the axial direction of the first pipe body (2.1) is in a fold line shape.
7. A vertically arranged barrel aftertreatment SCR mixer according to claim 6, wherein: the axis of the second pipe body (2.3) is parallel to the axis of the first pipe body (2.1), a plurality of circulation holes (2.31) are formed in the pipe wall of the second pipe body (2.3), the circulation holes (2.11) are arranged at intervals along the circumferential direction and the axial direction of the outer wall of the second pipe body (2.3), and the circulation holes (2.11) are communicated with the inside of the second pipe body (2.3) and the second cavity (1.2).
8. A vertically arranged barrel aftertreatment SCR mixer according to claim 7, wherein: a swirler (4) is further arranged in the second cavity (1.2), and the swirler (4) is fixed at the downstream of the second pipe body (2.3) in a mode of being perpendicular to the axis of the post-processor mixer barrel (1).
9. The vertically adapted barrel aftertreatment SCR mixer of claim 8, wherein: swirler (4) include swirler body (4.1), a plurality of through-hole (4.2) have been seted up at the middle part of swirler body (4.1), the peripheral of through-hole (4.2) is encircleed and is provided with a plurality of whirl hole (4.4), every be provided with the whirl deflector (4.3) that the slope was arranged on whirl hole (4.4).
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| CN202122800444.1U CN216406939U (en) | 2021-11-10 | 2021-11-10 | Cartridge aftertreatment SCR mixer adapted for vertical arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013128A (en) * | 2022-08-09 | 2022-09-06 | 潍柴动力股份有限公司 | SCR mixer and SCR system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013128A (en) * | 2022-08-09 | 2022-09-06 | 潍柴动力股份有限公司 | SCR mixer and SCR system |
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