A urea nozzle mixing mounting

Abstract

The application discloses a urea nozzle mixed mounting seat, which comprises a mounting seat upper cover, a main body pipe and a mixed column body, one end of the mixed column body is fixedly connected with the mounting seat upper cover, the other end of the mixed column body is connected with the main body pipe, a flow guide inlet and a flow guide outlet are arranged on the side surface of the mixed column body, a mixed column body cavity is formed between the inner surface of the mixed column body and the outer surface of the main body pipe, the main body pipe has a main body pipe cavity, the mixed column body cavity and the main body pipe cavity are symmetrical along the same central axis, and the main body pipe cavity is communicated with the mixed column body cavity. The urea nozzle is blown by the introduced waste gas through the flow guide inlet and the flow guide outlet arranged on the side surface of the mixed column body, the crystallization risk of urea around the urea nozzle is effectively reduced, the machining methods of cutting and punching can be adopted, the machining cost is saved, batch production is easier, the installation on different diameter cylinders is realized, and the installation universality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, in particular to a urea nozzle mixed mounting seat. BACKGROUND

[0002] In the existing tail gas treatment device, the basic principle is to spray urea water solution into the exhaust pipe through the urea injection system, mix with the tail gas, and generate ammonia gas through pyrolysis and hydrolysis reaction. Under the action of the catalyst, the ammonia gas reacts with the harmful nitrogen oxides in the tail gas to convert into nitrogen and water. In the existing treatment device, the urea nozzle mounting seat often only has the installation function, and the processing method is mostly machining, which has high processing cost, complex machining surface and poor universality. At the same time, urea crystallization frequently occurs at the nozzle, which is closely related to the structure of the urea nozzle seat. SUMMARY

[0003] To solve the above technical problems, the present application provides a urea nozzle mixed mounting seat, which is composed of a mounting seat upper cover, a main body pipe and a mixed column. The processing method of stamping and cutting is adopted, which can blow the urea nozzle seat during use to reduce the occurrence of urea crystallization. At the same time, the welding method is adopted to connect with the cylinder, which enhances the installation universality.

[0004] Specifically, the present application discloses a urea nozzle mixed mounting seat, which comprises a mounting seat upper cover, a main body pipe and a mixed column. One end of the mixed column is fixedly connected with the mounting seat upper cover, and the other end of the mixed column is connected with the main body pipe. A flow guide inlet and a flow guide outlet are arranged on the side surface of the mixed column. A through hole is arranged on the mounting cover, which corresponds to the hole of the main body pipe. The main body pipe is arranged in the mixed column. A mixed column cavity is formed between the inner surface of the mixed column and the outer surface of the main body pipe. The main body pipe cavity and the mixed column cavity are symmetrical along the same central axis, and the main body pipe cavity is in communication with the mixed column cavity.

[0005] The advantages of the present application are as follows: the flow guide inlet and the flow guide outlet arranged on the side surface of the mixed column introduce the exhaust gas to blow the urea nozzle, which effectively reduces the risk of urea crystallization around the urea nozzle. The arrangement of the main body pipe is beneficial to the uniform spraying of urea solution. The cutting and stamping processing method can save processing cost and make batch production easier. The mixed column and the cylinder are welded during installation, which realizes the installation on different diameter cylinders and improves the installation universality.

[0006] Further, the main body pipe is a conical pipe.

[0007] The beneficial effect of the technical scheme is that the conical pipe is arranged to enable the introduced exhaust gas to be blown upward along the surface of the conical pipe, to form a gas flow at the urea nozzle, to blow the urea nozzle, to avoid crystallization of the urea nozzle, and to enable a part of the exhaust gas to be sprayed from the inside of the conical pipe, to increase the distance of urea spraying, and to be beneficial to hydrolysis and pyrolysis of urea.

[0008] Further, a recess is arranged on the side surface of the upper cover of the mounting seat.

[0009] The beneficial effect of the technical scheme is that the step is used to position the mixing column during installation, to ensure that no deviation occurs during installation.

[0010] Further, the upper cover of the mounting seat is provided with a mounting hole.

[0011] The beneficial effect of the technical scheme is that the mounting hole is used for installation of the urea nozzle.

[0012] Further, a protruding part is arranged at the connection between the mixing column and the upper cover of the mounting seat.

[0013] The beneficial effect of the technical scheme is that the protruding part on the mixing column is used to position the mounting cover, to facilitate installation.

[0014] Further, the flow guide inlet is lower than the flow guide outlet.

[0015] The beneficial effect of the technical scheme is that the flow guide inlet serves as an exhaust gas inlet end, to enable the exhaust gas to blow upward along the outer side of the main pipe to the urea nozzle, to prevent crystallization at the urea nozzle, and to enable a part of the exhaust gas to enter the inside of the main pipe due to the fact that the flow guide outlet is smaller than the flow guide inlet, to increase the distance of urea solution spraying, to make urea spraying more uniform, and to accelerate hydrolysis and pyrolysis of urea.

[0016] Further, the mixing column is symmetrically provided with a positioning cut surface on the side surface.

[0017] The beneficial effect of the technical scheme is that the positioning cut surface on the mixing column cooperates with the positioning surface arranged on the cylinder to enable the mixing column to be unable to be installed after being rotated by a certain angle, to fix the position of the urea mixing mounting seat, and to better limit the position of the mixing column to prevent the mixing column from shaking after installation, and to affect tail gas treatment.

[0018] Further, a connecting port is arranged above the main pipe.

[0019] The beneficial effect of the technical scheme is that the connecting port is used to ensure that urea sprayed by the urea nozzle enters the urea mixing mounting seat.

[0020] Further, the application discloses a mixer comprising the urea nozzle mounting seat.

[0021] The mixer comprising the urea nozzle mounting seat can effectively solve the crystallization of the urea nozzle, is beneficial to uniform spraying of urea, and accelerates hydrolysis and pyrolysis of urea.

[0022] Further, the application also discloses a tail gas aftertreatment device comprising the mixer.

[0023] The tail gas treatment device comprising the mixer can be higher in tail gas treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0025] Figure 1 is a urea nozzle mixing mounting seat structure diagram of the application

[0026] Figure 2 is a urea nozzle mixing mounting seat and cylinder mounting structure diagram of the application

[0027] Figure 3 is a mounting seat upper cover structure diagram of the application

[0028] Figure 4 is a main body pipe structure diagram of the application

[0029] Figure 5 is a mixing column body structure diagram of the application

[0030] The labels involved in the drawings are as follows:

[0031] The mounting seat upper cover 1, the through hole 11, the recess 12, the mounting hole 13, the main body pipe 2, the connecting port 21, the mixing column body 3, the flow guide inlet 311, the flow guide outlet 312, the protruding part 32, the positioning section 33, the cylinder 4, the mixing column body cavity 5, and the main body pipe cavity 6. DETAILED DESCRIPTION

[0032] The application will be further described in detail in combination with the drawings.

[0033] As shown in the figure, the application discloses a urea nozzle mixing mounting seat, which comprises a mounting seat upper cover 1, a main body pipe 2 and a mixing column body 3, one end of the mixing column body 3 is fixedly connected with the mounting seat upper cover, the other end of the mixing column body 3 is connected with the main body pipe 2, a flow guide inlet 311 and a flow guide outlet 312 are arranged on the side surface of the mixing column body 3, a through hole 11 is arranged on the mounting cover, the through hole 11 corresponds to the hole of the main body pipe 2, the main body pipe 2 is arranged in the mixing column body 3, a mixing column body cavity 5 is formed between the inner surface of the mixing column body 3 and the outer surface of the main body pipe 2, a main body pipe cavity 6 is arranged in the main body pipe 2, the mixing column body cavity 5 and the main body pipe cavity 6 are symmetrical along the same central axis, and the main body pipe cavity 6 communicates with the mixing column body cavity 5.

[0034] The application has the advantages that: through the flow guide inlet 311 and the flow guide outlet 312 arranged on the side surface of the mixing column body 3, the exhaust gas enters from the flow guide inlet 311, a cyclone is formed at the top of the mixing main body cavity, the urea nozzle is purged, the risk of urea crystallization around the urea nozzle is effectively reduced, the exhaust gas enters the main body pipe cavity 6, the arrangement of the main body pipe 2 is beneficial to uniform spraying of the urea solution, the excess gas flows out from the flow guide outlet 312, the cutting and punching processing method can be adopted, the processing cost is saved, batch production is easier, the mixing column body 3 is welded with the cylinder body 4 during installation, installation on different diameter cylinder bodies 4 is realized, and the installation universality is improved.

[0035] Further, the main body pipe 2 is a conical pipe.

[0036] The beneficial effects of the technical scheme are that: the arrangement of the conical pipe enables the introduced exhaust gas to be blown upward along the surface of the conical pipe, a gas flow is formed at the urea nozzle, the urea nozzle is purged, urea nozzle crystallization is avoided, a part of the exhaust gas is sprayed out from the inside of the conical pipe, the distance of urea spraying is increased, and the urea hydrolysis and pyrolysis are facilitated.

[0037] In some embodiments, the main body pipe 2 can also adopt the following structural scheme, the shape of the main body pipe 2 can be a column, an arc-shaped groove can be formed on the side surface to guide the exhaust gas to the urea nozzle, and the main body pipe 2 can also have other shapes meeting the function of guiding the exhaust gas.

[0038] In some embodiments, the mounting seat upper cover 1 also adopts the following structural scheme, a recess 12 is arranged on the side surface of the mounting seat upper cover 1, and a step is arranged in the recess 12.

[0039] The beneficial effects of the technical scheme are that: the step is used for positioning the mixing column body 3 during installation, and ensures that no deviation occurs during installation.

[0040] In some embodiments, the mounting seat upper cover 1 adopts the following structural scheme, the mounting seat upper cover 1 is provided with mounting holes 13, the mounting holes 13 are uniform in size, two mounting holes 13 are symmetrically arranged, and the other mounting hole 13 is arranged on the symmetric line.

[0041] The beneficial effects of this technical scheme are that the mounting holes 13 are used for mounting the urea nozzle, and the uniform size of the mounting holes 13 makes the mounting more convenient.

[0042] In some embodiments, the mixing column body 3 can adopt the following structural scheme, the mixing column body 3 is provided with a protruding portion 32 at the connection with the mounting seat upper cover 1.

[0043] The beneficial effects of this technical scheme are that the protruding portion 32 on the mixing column body 3 is used for positioning the mounting seat upper cover 1, and the mixing column body 3 is conveniently mounted with the mounting seat upper cover 1.

[0044] In some embodiments, the flow guide inlet 311 and the flow guide outlet 312 can adopt the following structural scheme, the flow guide inlet 311 is higher than the flow guide outlet 312, and the flow guide outlet 312 is smaller than the flow guide inlet 311.

[0045] The beneficial effects of this technical scheme are that the flow guide inlet 311 serves as a waste gas inlet end, the waste gas is blown upward along the outer side of the main body pipe 2 to the urea nozzle, so as to prevent crystallization at the urea nozzle, and since the flow guide outlet 312 is smaller than the flow guide inlet 311, a part of the waste gas enters the inside of the main body pipe 2, the urea solution spraying distance is increased, the urea spraying is more uniform, and the hydrolysis and pyrolysis of urea are accelerated.

[0046] In some embodiments, the mixing column body 3 can also adopt the following structural scheme, the mixing column body 3 is symmetrically provided with a positioning cut surface 33 on the side.

[0047] The beneficial effects of this technical scheme are that the positioning cut surface 33 on the mixing column body 3 cooperates with the positioning surface arranged on the cylinder body 4, so that the mixing column body 3 cannot be installed after being rotated by a certain angle, the positioning cut surface 33 is symmetrically arranged, the position of the mixing column body 3 can be better limited, the mixing column body 3 is prevented from shaking after being installed, and the tail gas treatment is affected.

[0048] In some embodiments, the main body pipe 2 can adopt the following structural scheme, the main body pipe 2 is provided with a connecting port 21 at the upper side, the connecting port 21 is a column body, and a gap is left between the upper end of the column body and the mounting seat upper cover 1.

[0049] The beneficial effect of the technical scheme is that the connecting port 21 is used to ensure that all urea sprayed by the urea nozzle enters the urea mixing mounting seat, and the gap allows the introduced exhaust gas to blow the urea nozzle mounted above, thereby reducing the risk of urea nozzle crystallization in the urea nozzle mixing mounting seat.

[0050] In some embodiments, the present application discloses a mixer comprising the urea nozzle mounting seat of any of the above technical schemes.

[0051] The beneficial effect of the technical scheme is that the mixer comprising the urea nozzle mounting seat of any of the above technical schemes can effectively solve the urea nozzle crystallization problem, which is conducive to uniform urea spraying and accelerates urea hydrolysis and pyrolysis.

[0052] In some embodiments, the present application also discloses an exhaust gas aftertreatment device comprising the mixer of the above technical scheme.

[0053] The beneficial effect of the technical scheme is that the exhaust gas treatment device comprising the mixer of the above technical scheme can achieve higher efficiency of exhaust gas treatment.

[0054] In use, the mounting seat upper cover 1, the mixing column body 3, and the main body pipe 2 are welded, and the mixing column body 3 is welded with the cylinder body 4, the mounting hole 13 provided on the mounting seat upper cover 1 is connected with the urea nozzle, the main body pipe 2 is provided to allow the urea to be sprayed uniformly, the flow guide inlet 311 provided on the mixing column body 3 can introduce exhaust gas to effectively blow the urea nozzle, thereby reducing the risk of urea crystallization on the urea nozzle, and the introduced exhaust gas increases the distance of urea spraying, which is conducive to urea hydrolysis and pyrolysis. The welding connection mode can better connect the present application with cylinder bodies 4 of different diameters, thereby improving the universality of installation, and the stamping and cutting processing mode makes the processing faster, thereby realizing mass production.

[0055] For those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A urea nozzle mixing mounting block, characterized by, The urea nozzle mixing mounting seat comprises a mounting seat upper cover (1), a main body pipe (2) and a mixing column (3), one end of the mixing column (3) is fixedly connected with the mounting seat upper cover (1), the other end of the mixing column (3) is connected with the main body pipe (2), the side of the mixing column (3) is provided with a flow guide inlet (311) and a flow guide outlet (312), the mounting seat upper cover (1) is provided with a through hole (11), the through hole corresponds to the main body pipe hole, the main body pipe (2) is arranged in the mixing column (3), the inner surface of the mixing column (3) and the outer surface of the main body pipe (2) form a mixing column cavity (5), the main body pipe (2) has a main body pipe cavity (6), the mixing column cavity (5) and the main body pipe cavity (6) are symmetrical along the same central axis, the main body pipe cavity (6) is communicated with the mixing column cavity (5); The connecting part of the mixing column (3) and the mounting seat upper cover (1) is provided with a convex part (32); The flow guide inlet (311) is lower than the flow guide outlet (312); The upper part of the main body pipe (2) is provided with a connecting port (21); The main body pipe (2) is a conical pipe; The side of the mounting seat upper cover (1) is provided with a groove (12), the groove (12) is provided with a step; The mounting seat upper cover (1) is provided with a mounting hole (13).

2. The urea nozzle mixing mount of claim 1, wherein, The side of the mixing column (3) is symmetrically provided with a positioning section (33).

3. A mixer characterized by, The urea nozzle mixing mounting seat comprises the mounting seat upper cover (1) and the main body pipe (2).

4. An exhaust gas aftertreatment device, characterized in that The mixer comprises the mixing column (3).

Images