Combined honeycomb carrier structure

Abstract

The invention relates to a combined honeycomb carrier structure, and relates to the technical field of tail gas treatment equipment, the combined honeycomb carrier structure comprises a mounting rack, a front end carrier, a rear end carrier and a middle carrier, the front end carrier, the rear end carrier and the middle carrier are arranged on the mounting rack, gas guide assemblies are arranged between the front end carrier and the middle carrier, and gas guide assemblies are arranged between the middle carrier and the rear end carrier; the gas guide assembly is used for guiding tail gas in the middle of a carrier to the edge of the carrier, the middle carrier is connected with the front-end carrier and the rear-end carrier through two connecting assemblies, and the connecting assemblies can fix the gas guide assembly. The honeycomb carrier structure has the advantages that consumption of catalysts in the centers and the edges of the middle carrier and the rear-end carrier is more consistent, and the utilization rate of the whole honeycomb carrier structure is increased.

Description

Technical Field

[0001] The present application relates to the technical field of exhaust gas treatment equipment, and in particular to a combined honeycomb carrier structure. Background Art

[0002] Honeycomb substrate is a special material with honeycomb structure and shape, which is widely used in industrial fields, especially in environmental protection and chemical industries. Honeycomb ceramics have special properties such as high strength, high temperature resistance, corrosion resistance, wear resistance, etc., and are suitable for various environmental protection fields, such as automobile exhaust emissions.

[0003] When the existing honeycomb carrier is in use, the high-temperature exhaust gas of the automobile passes through the honeycomb carrier, heats the catalyst on the honeycomb carrier and reacts, decomposing the exhaust gas into non-toxic gases such as carbon dioxide, water and nitrogen, thereby treating the automobile exhaust gas. However, when the honeycomb carrier catalyzes the exhaust gas, due to the uneven distribution of the exhaust gas in the honeycomb carrier, the catalyst at the center of the honeycomb carrier is consumed faster than the catalyst at the edge, resulting in a reduced utilization rate of the honeycomb carrier. Summary of the invention

[0004] In order to improve the problem that the exhaust gas is unevenly distributed in the honeycomb carrier, resulting in faster consumption of catalyst at the center of the honeycomb carrier than at the edge, leading to reduced utilization of the honeycomb carrier, the present application provides a combined honeycomb carrier structure.

[0005] The combined honeycomb carrier structure provided in the present application adopts the following technical solution: A combined honeycomb carrier structure comprises a mounting frame and a front-end carrier, a rear-end carrier and an intermediate carrier arranged on the mounting frame, an air guide component is provided between the front-end carrier and the intermediate carrier, and between the intermediate carrier and the rear-end carrier, the air guide component is used to guide the exhaust gas from the middle part of the carrier to the edge of the carrier, the intermediate carrier is connected to the front-end carrier and the rear-end carrier respectively through two groups of connecting components, and the connecting components can fix the air guide components.

[0006] By adopting the above technical solution, when the exhaust gas is processed, the exhaust gas enters the front-end carrier, and then enters the middle carrier through the air guide component. The exhaust gas coming out of the middle carrier enters the rear-end carrier through the second air guide component and is then discharged. When the exhaust gas passes through the air guide component, the air guide component guides the exhaust gas in the middle of the carrier to the edge, which can improve the uniformity of the exhaust gas distribution in the honeycomb carrier, make the catalyst consumption at the center and the edge of the middle carrier and the rear-end carrier more consistent, and improve the utilization rate of the entire honeycomb carrier structure.

[0007] In a specific implementation scheme, the air guide assembly includes a mounting ring and N guide rings, the N guide rings are coaxially spaced in the mounting ring and fixedly connected to the mounting ring through a connecting rod, and the angles between the wall surface of the guide ring arranged from the inside to the outside of the mounting ring and the exhaust gas flow direction are α1, α2...α N , 0°<α1, α2…α N <90°, so as to be able to guide the exhaust gas to the edge of the substrate.

[0008] By adopting the above technical solution and using N guide rings tilted to the airflow direction, the exhaust gas in the middle of the carrier can be guided to the edge position, thereby increasing the uniformity of exhaust gas distribution within the carrier structure.

[0009] In a specific embodiment, α1>α2>α3>...>α N , so that a wedge-shaped channel is formed between two adjacent guide rings, and the front end of each wedge-shaped channel has a length L along the radial direction of the mounting ring.

[0010] By adopting the above technical solution, using α1>α2>α1>……>α N The length of the front end edge of the wedge-shaped channel is L. On the one hand, it can reduce the distance that the exhaust gas at the edge of the carrier flows in the wedge-shaped channel at the edge of the mounting ring, and reduce the back pressure of the exhaust gas flowing through the guide ring. On the other hand, the rear end channel cross-sectional area of ​​the wedge-shaped channel in the middle position of the mounting ring is smaller than the rear end channel cross-sectional area of ​​the outer wedge-shaped channel, and the speed of the exhaust gas flowing out of the inner wedge channel is greater than the speed of the outer wedge channel, thereby increasing the distance that the exhaust gas from the center of the mounting ring flows to the edge, and improving the uniform distribution of the exhaust gas in the honeycomb carrier structure after passing through the guide ring.

[0011] In a specific possible implementation scheme, the connecting assembly includes a first connecting cylinder and a second connecting cylinder, the first connecting cylinder is rotatably mounted on the outer shell of the intermediate carrier, the second connecting cylinder is inserted into the first connecting cylinder and is threadedly connected to the first connecting cylinder, and the second connecting cylinder can be mounted on the outer shell of the front-end carrier or the rear-end carrier and is threadedly connected to the front-end carrier or the rear-end carrier.

[0012] By adopting the above technical solution, when installing the intermediate carrier, first screw the second connecting tube onto the front-end carrier and the rear-end carrier respectively, then place the intermediate carrier between the front-end carrier and the rear-end carrier, and then rotate the first connecting tubes at both ends toward the second connecting tube respectively, so that the second connecting tube is spirally inserted into the first connecting tube, thereby completing the installation of the intermediate carrier. When disassembling the intermediate carrier, there is no need to disassemble and assemble the front-end carrier or the rear-end carrier, thereby improving the convenience of disassembly and assembly of the intermediate carrier.

[0013] In a specific possible implementation manner, a first sealing ring is fixedly provided on the outer shell of the intermediate carrier, and a second sealing ring capable of tightly abutting against the first sealing ring is fixedly provided on the inner wall of the first connecting tube.

[0014] By adopting the above technical solution and utilizing the tight contact between the first sealing ring and the second sealing ring, the sealing effect of the connection between the middle carrier and the front-end carrier and the rear-end carrier is improved.

[0015] In a specific possible implementation scheme, the outer diameter of the mounting ring is smaller than the inner diameter of the first connecting tube, and the inner diameter of the mounting ring is larger than the outer diameter of the intermediate carrier shell, so that the mounting ring can be inserted between the first connecting tube and the shell of the intermediate carrier, and the end wall of the second connecting tube can abut against one end wall of the mounting ring and abut the other end wall against the first sealing ring.

[0016] By adopting the above technical solution, when installing the mounting ring, first insert the mounting ring between the first connecting tube and the shell of the intermediate carrier. When the first connecting tube is screwed onto the second connecting tube, the second connecting tube is screwed again to move toward the intermediate carrier. The second connecting tube presses the mounting ring against the first sealing ring. At this time, keep the second connecting tube stationary, rotate the first connecting tube to move toward the front end carrier or the rear end carrier, so that the second sealing ring presses against the first sealing ring, thereby completing the installation of the mounting ring and improving the convenience of installing the mounting ring.

[0017] In a specific feasible implementation scheme, an air duct connected to the exhaust pipe is provided on the outer shell of the front-end carrier, a split tube is provided inside the air duct and is sleeved on the shell of the front-end carrier, a connecting cavity is formed inside the air duct, a flow cavity is formed between the air duct and the split tube, and a return cavity is formed between the shell of the front-end carrier and the split tube, and the exhaust gas can enter the front-end carrier after passing through the connecting cavity, the flow cavity and the return cavity in sequence.

[0018] By adopting the above technical scheme, the exhaust gas enters the front-end carrier after passing through the connecting cavity, the flow cavity and the return cavity. When the exhaust gas passes through the return cavity, it can heat the catalyst at the edge of the front-end carrier, thereby reducing the temperature difference between the center and the edge of the honeycomb carrier, making the activity of the catalyst in the center area and the edge area more consistent, and making the consumption rate of the catalyst in the honeycomb carrier of the front-end carrier more consistent.

[0019] In a specific possible implementation manner, the flow cross-sectional areas of the connecting chamber, the flow chamber, and the return chamber are equal.

[0020] In a specific possible implementation scheme, a mounting tube is fixedly provided on the air guide tube, and the shell of the front-end carrier can be inserted into the mounting tube and threadedly connected to the mounting tube.

[0021] By adopting the above technical solution, when installing the front-end carrier, the front-end carrier is screwed into the installation tube to complete the installation of the front-end carrier and the air guide tube, thereby improving the convenience of connecting the two.

[0022] In a specific possible implementation manner, a third sealing ring is provided on the shell of the front end carrier, and the third sealing ring can abut against the end wall of the mounting tube.

[0023] By adopting the above technical solution, the sealing performance of the connection between the front-end carrier and the air guide tube is improved by utilizing the abutment between the third sealing ring and the end wall of the mounting tube.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the tail gas is processed, the tail gas enters the front carrier, then enters the middle carrier through the air guide component, and the tail gas from the middle carrier enters the rear carrier through the second air guide component and is discharged. When the tail gas passes through the air guide component, the air guide component guides the tail gas in the middle of the carrier to the edge, which can improve the uniformity of the tail gas distribution in the honeycomb carrier, so that the catalyst consumption at the center and the edge of the middle carrier and the rear carrier is more consistent, and the utilization rate of the entire honeycomb carrier structure is improved; 2. When installing the intermediate carrier, first screw the second connecting tube onto the front-end carrier and the rear-end carrier respectively, then place the intermediate carrier between the front-end carrier and the rear-end carrier, and then rotate the first connecting tubes at both ends to move toward the second connecting tube respectively, so that the second connecting tube is screwed into the first connecting tube, thereby completing the installation of the intermediate carrier. When disassembling the intermediate carrier, there is no need to disassemble the front-end carrier or the rear-end carrier, thereby improving the convenience of disassembling the intermediate carrier; 3. The exhaust gas enters the front-end carrier after passing through the connecting cavity, the flow cavity and the return cavity. When passing through the return cavity, the exhaust gas can heat the catalyst at the edge of the front-end carrier, reduce the temperature difference between the center and the edge of the honeycomb carrier, and make the activity of the catalyst in the center area and the edge area more consistent, making the consumption rate of the catalyst in the honeycomb carrier of the front-end carrier more consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a combined honeycomb carrier structure in an embodiment of the present application.

[0026] Figure 2 is along Figure 1 Section view along line AA.

[0027] Figure 3 It is used to show the schematic diagram of the internal structure of the airway.

[0028] Figure 4It is a structural diagram used to show the connection components.

[0029] Figure 5 It is a schematic diagram for showing the structure of the gas guide component.

[0030] Figure 6 is along Figure 5 Sectional view along line BB.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Mounting frame; 11. Fixing rod; 21. Front-end carrier; 211. Honeycomb structure; 212. Shell; 22. Rear-end carrier; 23. Intermediate carrier; 3. Air guide assembly; 31. Mounting ring; 32. Guide ring; 33. Connecting rod; 34. Wedge-shaped channel; 4. Connecting assembly; 41. First connecting tube; 42. Second connecting tube; 43. Second sealing ring; 44. First sealing ring; 51. Air guide pipe; 52. Mounting pipe; 53. Third sealing ring; 54. Splitting pipe; 551. Connecting chamber; 552. Flow chamber; 553. Return chamber. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-6 This application is described in further detail.

[0033] The embodiment of the present application discloses a combined honeycomb carrier structure.

[0034] Reference Figure 1 , Figure 2 A combined honeycomb carrier structure includes a mounting frame 1 and a front carrier 21, a rear carrier 22 and an intermediate carrier 23 arranged on the mounting frame 1. The mounting frame 1 in this embodiment is two fixing rods 11, and the two fixing rods 11 are detachably connected to the front carrier 21 and the rear carrier 22 by bolts. The front carrier 21, the intermediate carrier 23 and the rear carrier 22 all include a honeycomb structure 211 and a shell 212. The honeycomb structure 211 is coated with a catalyst. The high-temperature exhaust gas passes through the honeycomb structure 211 and reacts with the catalyst on the honeycomb structure 211 to achieve the treatment of the exhaust gas. An air guide component 3 is provided between the front carrier 21 and the intermediate carrier 23, and between the intermediate carrier 23 and the rear carrier 22. The air guide component 3 is used to guide the exhaust gas in the middle part of the carrier to the edge of the carrier. The intermediate carrier 23 is detachably connected to the front carrier 21 and the rear carrier 22 through two sets of connecting components 4, and the connecting component 4 can fix the air guide component 3.

[0035] When the exhaust gas is processed, the exhaust gas enters the front-end carrier 21, and then enters the intermediate carrier 23 through the air guide component 3. The exhaust gas coming out of the intermediate carrier 23 enters the rear-end carrier 22 through the second group of air guide components 3 and is then discharged. When the exhaust gas passes through the air guide component 3, the air guide component 3 guides the exhaust gas in the middle of the carrier to the edge, which can improve the uniformity of the exhaust gas distribution in the honeycomb carrier, so that the catalyst consumption at the center and the edge of the intermediate carrier 23 and the rear-end carrier 22 are more consistent, thereby improving the utilization rate of the entire honeycomb carrier structure.

[0036] Reference Figure 2 , Figure 3 The front carrier 21 is provided with an air duct 51, the front end of which is connected to the exhaust pipe of the vehicle, the middle position of the air duct 51 is an expansion structure, the large mouth section of the air duct 51 is sleeved on the front carrier 21, and a mounting tube 52 is fixedly provided on the large mouth section of the air duct 51, the inner side wall of the mounting tube 52 is provided with an external thread, the housing 212 of the front carrier 21 is provided with an internal thread matching the external thread, the front carrier 21 is inserted into the mounting tube 52 and fixed by thread connection, so as to improve the convenience of disassembly and assembly of the front carrier 21 and the air duct 51. The housing 212 of the front carrier 21 is provided with a third sealing ring 53, when the front carrier 21 is screwed and inserted into the mounting tube 52, the third sealing ring 53 abuts against the end wall of the mounting tube 52, and the abutment between the third sealing ring 53 and the end wall of the mounting tube 52 is used to improve the sealing performance of the connection between the front carrier 21 and the air duct 51.

[0037] Reference Figure 2 , Figure 3 A split tube 54 is fixedly provided inside the air guide tube 51, and one end of the split tube 54 is open and the other end is blocked. The open rear end of the split tube 54 is sleeved on the shell 212 of the front-end carrier 21, so that the blocked end of the split tube 54 is opposite to the inlet end of the front-end carrier 21, and a connecting cavity 551 is formed inside the small-mouth section of the air guide tube 51, a flow cavity 552 is formed between the air guide tube 51 and the split tube 54, and a return cavity 553 is formed between the split tube 54 and the shell 212 of the front-end carrier 21. The flow cross-sectional areas of the connecting cavity 551, the flow cavity 552, and the return cavity 553 are equal, and the exhaust gas can enter the front-end carrier 21 after passing through the connecting cavity 551, the flow cavity 552, and the return cavity 553 in sequence.

[0038] When treating automobile exhaust gas, the exhaust gas passes through the connecting cavity 551, the flow cavity 552 and the return cavity 553 and then enters the front end carrier 21. When passing through the return cavity 553, the exhaust gas can heat the catalyst at the edge of the front end carrier 21, thereby reducing the temperature difference between the center and the edge of the honeycomb carrier, making the activity of the catalyst in the center area and the edge area more consistent, and making the consumption rate of the catalyst in the honeycomb carrier of the front end carrier 21 more consistent.

[0039] Reference Figure 2 , Figure 4 In this embodiment, the connecting assembly 4 includes a first connecting cylinder 41 and a second connecting cylinder 42. The first connecting cylinder 41 is rotatably sleeved on the shell 212 of the intermediate carrier 23. The second connecting cylinder 42 is inserted into the first connecting cylinder 41 and is threadedly connected to the first connecting cylinder 41. The second connecting cylinder 42 can be sleeved on the outer shell of the front-end carrier 21 or the rear-end carrier 22 and is threadedly connected to the front-end carrier 21 or the rear-end carrier 22. The outer wall and the inner wall of the second connecting cylinder 42 have the same rotation direction, pitch and other characteristics, so that the second connecting cylinder 42 can maintain relative rotation with the first connecting cylinder 41, the front-end carrier 21 or the rear-end carrier 22 at the same time.

[0040] Reference Figure 2 , Figure 4 The inner diameter of the first connecting tube 41 is larger than the outer diameter of the shell 212 of the intermediate carrier 23, so that a space is formed between the first connecting tube 41 and the intermediate carrier 23. A second sealing ring 43 is fixedly provided at the end of the first connecting tube 41. The second sealing ring 43 is slidably mounted on the intermediate carrier 23. A first sealing ring 44 is fixedly provided on the shell 212 of the intermediate carrier 23. The second sealing ring 43 abuts against the first sealing ring 44, thereby realizing a sealed connection between the first connecting tube 41 and the intermediate carrier 23.

[0041] Reference Figure 4 , Figure 5 and Figure 6 The air guide assembly 3 in this embodiment includes a mounting ring 31 and N guide rings 32. The inner diameter of the mounting ring 31 is larger than the outer diameter of the intermediate carrier 23, so that the mounting ring 31 can be inserted into the space between the first connecting cylinder 41 and the shell 212 of the intermediate carrier 23. In this embodiment, N=3 is selected as an example. Three guide rings 32 are coaxially spaced in the mounting ring 31 and fixedly connected to the mounting ring 31 through a connecting rod 33. The angles between the wall surface of the guide ring 32 arranged from the inside to the outside of the mounting ring 31 and the exhaust gas flow direction are α1, α2, and α3, respectively, 0°<α1, α2, α3<90°, and α1>α2>α3. By using the three guide rings 32 to be arranged obliquely with the airflow direction, the exhaust gas in the middle of the carrier is guided to the edge position, thereby increasing the uniformity of exhaust gas distribution in the carrier structure.

[0042] Reference Figure 4 , Figure 5 and Figure 6In this embodiment, α1=45°, α2=30°, α3=15° are selected, so that a wedge-shaped channel 34 is formed between two adjacent guide rings 32, and the spacing between the front ends of the guide rings 32 and between the front ends of the guide rings 32 and the mounting ring 31 are both L. By using α1=45°, α2=30°, α3=15° and the length of the front edge of the wedge-shaped channel 34 is L, it can be concluded that the length of the wedge-shaped channel 34 from the inside to the outside of the mounting ring 31 is gradually decreasing, and the flow cross-sectional area of ​​the outlet end of the wedge-shaped channel 34 is gradually increasing. On the one hand, It can reduce the distance that the exhaust gas at the edge of the carrier flows in the wedge-shaped channel 34 at the edge of the mounting ring 31, and reduce the back pressure of the exhaust gas flowing through the guide ring 32. On the other hand, the rear end channel cross-sectional area of ​​the wedge-shaped channel 34 in the middle position of the mounting ring 31 is smaller than the rear end channel cross-sectional area of ​​the outer wedge-shaped channel 34, and the speed of the exhaust gas flowing out of the inner wedge channel 34 is greater than the speed of the outer wedge channel 34, thereby increasing the distance that the exhaust gas from the center of the mounting ring 31 flows to the edge, and improving the uniform distribution of the exhaust gas in the honeycomb carrier structure after passing through the guide ring 32.

[0043] When installing the intermediate carrier 23 and the mounting ring 31, first insert the mounting ring 31 between the first connecting tube 41 and the shell 212 of the intermediate carrier 23, and at the same time screw the second connecting tube 42 onto the front end carrier 21 and the rear end carrier 22 respectively, and then place the intermediate carrier 23 between the front end carrier 21 and the rear end carrier 22, and then rotate the first connecting tubes 41 at both ends to move toward the second connecting tube 42 respectively, so that the second connecting tube 42 is spirally inserted into the first connecting tube 41, and then keep the first connecting tube 41 stationary, screw the second connecting tube 42 to move toward the intermediate carrier 23, and the second connecting tube 42 presses the mounting ring 31 against the first sealing ring 44, and then keep the second connecting tube 42 stationary, rotate the first connecting tube 41 to move toward the front end carrier 21 or the rear end carrier 22, so that the second sealing ring 43 presses against the first sealing ring 44, thereby completing the installation of the mounting ring 31, without the need to disassemble and assemble the front end carrier 21 or the rear end carrier 22, and realizing the separate replacement of the intermediate carrier 23, thereby improving the convenience of installing the mounting ring 31 and the intermediate carrier 23.

[0044] During routine vehicle inspections or when the intermediate carrier 23 is blocked, the intermediate carrier 23 needs to be disassembled, the second connecting cylinder 42 needs to be rotated to move away from the intermediate carrier 23, and the second connecting cylinder 42 needs to be disengaged from the first connecting cylinder 41, and then the intermediate carrier 23 can be removed from the front end carrier 21 and the rear end carrier 22, thereby improving the convenience of disassembly and assembly of the intermediate carrier 23.

[0045] The implementation principle of a combined honeycomb carrier structure in an embodiment of the present application is as follows: when the exhaust gas is processed, the exhaust gas enters the front-end carrier 21, and then enters the middle carrier 23 through three guide rings 32. The exhaust gas coming out of the middle carrier 23 enters the rear-end carrier 22 through the second group of guide rings 32 and is then discharged. When the exhaust gas passes through the air guide component 3, the guide ring 32 guides the exhaust gas in the middle of the carrier to the edge, which can improve the uniformity of the exhaust gas distribution in the honeycomb carrier, so that the catalyst consumption at the center and the edge of the middle carrier 23 and the rear-end carrier 22 are more consistent, thereby improving the utilization rate of the entire honeycomb carrier structure.

[0046] When installing the intermediate carrier 23, first insert the mounting ring 31 between the first connecting tube 41 and the shell 212 of the intermediate carrier 23, and at the same time screw the second connecting tube 42 onto the front end carrier 21 and the rear end carrier 22 respectively, and then place the intermediate carrier 23 between the front end carrier 21 and the rear end carrier 22, and then rotate the first connecting tubes 41 at both ends to move toward the second connecting tube 42 respectively, so that the second connecting tube 42 is spirally inserted into the first connecting tube 41, and then keep the first connecting tube 41 stationary, screw the second connecting tube 42 toward the intermediate carrier 23, and the second connecting tube 42 presses the mounting ring 31 against the first sealing ring 44, and then keep the second connecting tube 42 stationary, rotate the first connecting tube 41 toward the front end carrier 21 or the rear end carrier 22, so that the second sealing ring 43 presses against the first sealing ring 44, thereby completing the installation of the mounting ring 31, without the need to disassemble and assemble the front end carrier 21 or the rear end carrier 22, and realizing the separate replacement of the intermediate carrier 23, thereby improving the convenience of installing the mounting ring 31 and the intermediate carrier 23.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined honeycomb carrier structure, characterized in that: The invention comprises a mounting frame (1), and a front-end carrier (21), a rear-end carrier (22), and an intermediate carrier (23) arranged on the mounting frame (1); an air guide component (3) is arranged between the front-end carrier (21) and the intermediate carrier (23), and between the intermediate carrier (23) and the rear-end carrier (22); the air guide component (3) is used to guide the exhaust gas in the middle part of the carrier to the edge of the carrier; the intermediate carrier (23) is connected to the front-end carrier (21) and the rear-end carrier (22) respectively through two groups of connecting components (4); and the connecting components (4) are capable of fixing the air guide component (3).

2. The combined honeycomb carrier structure according to claim 1, characterized in that: The air guide assembly (3) comprises a mounting ring (31) and N guide rings (32), wherein the N guide rings (32) are coaxially arranged in the mounting ring (31) at intervals and fixedly connected to the mounting ring (31) via a connecting rod (33), and the angles between the wall surfaces of the guide rings (32) arranged from the inside to the outside of the mounting ring (31) and the exhaust gas flow direction are α1, α2, ..., α N , 0°<α1, α2…α N <90°, so as to be able to guide the exhaust gas to the edge of the substrate.

3. The combined honeycomb carrier structure according to claim 2, characterized in that: α1>α2>α3>……>α N , so that a wedge-shaped channel (34) is formed between two adjacent guide rings (32), and the front end of each wedge-shaped channel (34) has a radial length L along the mounting ring (31).

4. The combined honeycomb carrier structure according to claim 2, characterized in that: The connecting assembly (4) comprises a first connecting cylinder (41) and a second connecting cylinder (42); the first connecting cylinder (41) is rotatably sleeved on the shell (212) of the intermediate carrier (23); the second connecting cylinder (42) is inserted into the first connecting cylinder (41) and is threadedly connected to the first connecting cylinder (41); the second connecting cylinder (42) can be sleeved on the shell (212) of the front-end carrier (21) or the rear-end carrier (22) and is threadedly connected to the front-end carrier (21) or the rear-end carrier (22).

5. The combined honeycomb carrier structure according to claim 4, characterized in that: A first sealing ring (44) is fixedly provided on the shell (212) of the intermediate carrier (23), and a second sealing ring (43) capable of tightly abutting against the first sealing ring (44) is fixedly provided on the inner wall of the first connecting tube (41).

6. The combined honeycomb carrier structure according to claim 5, characterized in that: The outer diameter of the mounting ring (31) is smaller than the inner diameter of the first connecting tube (41), and the inner diameter of the mounting ring (31) is larger than the outer diameter of the shell (212) of the intermediate carrier (23), so that the mounting ring (31) can be inserted between the first connecting tube (41) and the shell (212) of the intermediate carrier (23), and the end wall of the second connecting tube (42) can abut against one end wall of the mounting ring (31), and the other end wall can abut against the first sealing ring (44).

7. The combined honeycomb carrier structure according to claim 1, characterized in that: An air guide pipe (51) connected to an exhaust pipe is provided on the shell (212) of the front-end carrier (21); a split pipe (54) sleeved on the shell (212) of the front-end carrier (21) is provided in the air guide pipe (51); a connecting cavity (551) is formed in the air guide pipe (51); a flow cavity (552) is formed between the air guide pipe (51) and the split pipe (54); a return cavity (553) is formed between the shell (212) of the front-end carrier (21) and the split pipe (54); and the exhaust gas can enter the front-end carrier (21) after passing through the connecting cavity (551), the flow cavity (552), and the return cavity (553) in sequence.

8. The combined honeycomb carrier structure according to claim 7, characterized in that: The flow cross-sectional areas of the connecting chamber (551), the flow chamber (552), and the return chamber (553) are equal.

9. The combined honeycomb carrier structure according to claim 7, characterized in that: A mounting tube (52) is fixedly mounted on the air guide tube (51), and the housing (212) of the front-end carrier (21) can be inserted into the mounting tube (52) and threadedly connected to the mounting tube (52).

10. The combined honeycomb carrier structure according to claim 9, characterized in that: A third sealing ring (53) is provided on the shell (212) of the front-end carrier (21), and the third sealing ring (53) can abut against the end wall of the mounting tube (52).

Images