A dual carrier three-way catalyst

Abstract

This application relates to the field of three-way catalytic converter technology, and in particular to a dual-carrier three-way catalytic converter, which includes a housing, two of which are symmetrically arranged. One end of the housing is fixedly connected to a first flange ring, and the two first flange rings are fixedly connected by bolts. The other end of the housing is fixedly connected to a connecting pipe, and one end of the connecting pipe is fixedly connected to a second flange ring for connecting to the vehicle exhaust system. A carrier cylinder is disposed inside the housing, and a spiral groove is formed on the carrier cylinder. A first carrier and a second carrier are respectively disposed in the two carrier cylinders. A partition plate is disposed between the two carrier cylinders, and a through hole is formed on the partition plate. The partition plate abuts against the carrier cylinder and is located between the first carrier and the second carrier, thereby achieving the effect of facilitating the disassembly of the housing of the dual-carrier three-way catalytic converter and facilitating the cleaning or replacement of the carrier.

Description

Technical Field

[0001] This application relates to the field of three-way catalytic converter technology, and in particular to a dual-carrier three-way catalytic converter. Background Technology

[0002] The three-way catalytic converter is the most important external purification device installed in a car's exhaust system. It is mainly composed of precious metal catalytic materials such as platinum, palladium, and germanium added to an alloy mesh. It converts harmful gases such as CO, HC, and NOx emitted from car exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The three-way catalytic converter purifies the car's exhaust by transforming these three harmful gases into harmless ones.

[0003] The dual-carrier three-way catalytic converter includes two carriers. Existing dual-carrier three-way catalytic converters typically include an intake pipe, a housing, and an exhaust pipe. The intake pipe, housing, and exhaust pipe are welded together in sequence. Two carriers are set inside the housing, which allows the first carrier to quickly pre-treat the components and then the second carrier to post-treat them, thus achieving good treatment efficiency and effect.

[0004] The existing technical solutions mentioned above have the following drawbacks: the intake pipe, housing and exhaust pipe of the existing dual-carrier three-way catalytic converter are connected by welding, which is inconvenient to disassemble, clean or replace the carrier. Utility Model Content

[0005] This application provides a dual-carrier three-way catalytic converter to facilitate the disassembly of the housing and the cleaning or replacement of the carrier.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A dual-carrier three-way catalytic converter includes a housing, two of which are symmetrically arranged. A first flange ring is fixed to one end of the housing, and the two first flange rings are fixed together by bolts. A connecting pipe is fixed to the other end of the housing, and a second flange ring for connecting to an automotive exhaust system is fixed to one end of the connecting pipe. A carrier cylinder is disposed inside the housing, and a spiral groove is formed on the carrier cylinder. A first carrier and a second carrier are respectively disposed in the two carrier cylinders. A partition plate is disposed between the two carrier cylinders, and a through hole is formed on the partition plate. The partition plate abuts against the carrier cylinder and is located between the first carrier and the second carrier.

[0008] By adopting the above technical solution, after removing the three-way catalytic converter, the bolts connecting the two first flange rings are unscrewed to separate the two housings. At this time, both the first and second carriers are exposed, making it easier for staff to clean the carriers. The partition plate can reduce wear caused by friction between the first and second carriers, making it easier to clean or replace the carriers. The spiral grooves on the outer wall of the carrier cylinder can collect particulate matter generated when exhaust gas passes through the three-way catalytic converter, reducing the risk of particulate matter accumulation in the exhaust gas causing adhesion between the carrier cylinder and the housing, ensuring that the carrier cylinder can be removed from the housing, facilitating the disassembly of the housing of the dual-carrier three-way catalytic converter, and making it easier to clean or replace the carriers.

[0009] Optionally, a sealing ring is provided between the two first flange rings.

[0010] By adopting the above technical solution, the sealing performance at the connection of the two first flange rings can be improved, ensuring the sealing performance at the connection of the two housings after disassembly and assembly, ensuring the stability of the dual-carrier three-way catalytic converter in high-temperature environment, and reducing the risk of exhaust gas leakage inside the dual-carrier three-way catalytic converter.

[0011] Optionally, a filter cover is fixedly connected inside the connecting pipe.

[0012] By adopting the above technical solution, the filter cover can block larger particles in the exhaust gas, reduce the risk of carrier wear and blockage in the dual-carrier three-way catalytic converter, and ensure the safety and stability of the dual-carrier three-way catalytic converter.

[0013] Optionally, the filter cover is machined into a conical shape.

[0014] By adopting the above technical solution, the filter cover can be processed into a conical shape, which can increase the filtration area of ​​the filter cover, reduce the accumulation of larger diameter particles in the exhaust gas on the surface of the filter cover, and reduce the risk of filter cover blockage leading to blockage of the vehicle's exhaust system.

[0015] Optionally, a retaining ring is fixedly connected to the carrier cylinder.

[0016] By adopting the above technical solution, the retaining ring can reduce the restriction on the first or second carrier, reduce the risk of damage caused by the carrier impacting the connecting pipe, facilitate the removal of the carrier from the housing, and facilitate the observation of the carrier installation status when cleaning and replacing the carrier.

[0017] Optionally, a heat sink is fixedly attached to the housing.

[0018] By adopting the above technical solutions, the heat sink can improve the heat dissipation efficiency of the casing, reduce the temperature around the three-way catalytic converter, and ensure the stability and safety of the dual-carrier three-way catalytic converter.

[0019] Optionally, a protective frame is fixed to the housing, and a protective plate is connected to the protective frame.

[0020] By adopting the above technical solutions, the protective plate can improve the structural strength of the bottom of the shell and reduce the risk of damage to the three-way catalytic converter caused by flying stone impacts and road surface scratches.

[0021] Optionally, a rubber plate is fixedly connected to the protective frame, and the rubber plate is fixedly connected to the protective plate.

[0022] By adopting the above technical solutions, the vibration of the three-way catalytic converter caused by flying stone impacts and road surface scraping can be reduced, ensuring the stability and safety of the dual-carrier three-way catalytic converter.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up a shell, connecting pipe and partition plate, it is easy to clean or replace the carrier. The spiral groove on the outer wall of the carrier cylinder can collect the particulate matter generated when the exhaust gas passes through the three-way catalytic converter, reduce the risk of the accumulation of particulate matter in the exhaust gas causing adhesion between the carrier cylinder and the shell, ensure that the carrier cylinder can be removed from the shell, facilitate the disassembly of the shell of the dual carrier three-way catalytic converter, and facilitate the cleaning or replacement of the carrier.

[0025] 2. By setting a sealing ring, the sealing performance at the connection between the two first flange rings can be improved, ensuring the sealing performance at the connection between the two housings after disassembly and assembly, ensuring the stability of the dual-carrier three-way catalytic converter in high-temperature environments, and reducing the risk of exhaust gas leakage inside the dual-carrier three-way catalytic converter;

[0026] 3. By installing rubber plates, the vibration of the three-way catalytic converter caused by flying stone impacts and road surface scraping can be reduced, ensuring the stability and safety of the dual-carrier three-way catalytic converter. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the external shape of this application;

[0028] Figure 2 This is a cross-sectional structural diagram of the shell, connecting pipe, carrier cylinder, first carrier and second carrier of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Shell; 11. First flange ring; 12. Sealing ring; 13. Heat sink plate; 14. Protective frame; 15. Rubber plate; 16. Protective plate; 2. Connecting pipe; 21. Second flange ring; 22. Conical section; 23. Filter cover; 3. Carrier cylinder; 31. Spiral groove; 32. Retaining ring; 4. First carrier; 5. Second carrier; 6. Separator plate. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a dual-carrier three-way catalytic converter, referring to... Figure 1 The three-way catalytic converter includes a housing 1, which is cylindrical. Two housings 1 are symmetrically arranged. A first flange ring 11 is welded to the end of the two housings 1 that is close to each other. The two first flange rings 11 are fixed together by bolts. A connecting pipe 2 is welded to the end of the two housings 1 that is far away from each other. A second flange ring 21 for connecting to the exhaust pipe of the car is welded to the end of the connecting pipe 2 that is far away from the housing 1. The section of the connecting pipe 2 that is close to the housing 1 is processed into a tapered section 22, and the larger diameter end of the tapered section 22 is connected to the housing 1.

[0032] Reference Figure 1 and Figure 2 A filter cover 23 is welded inside the connecting pipe 2 near the car engine. The filter cover 23 is machined into a cone shape with its apex facing the smaller diameter end of the connecting pipe 2. A heat dissipation plate 13 is integrally formed on the outer wall of the top of the housing 1. Multiple heat dissipation plates 13 are spaced apart. A protective frame 14 is fixed to the outer wall of the bottom of the housing 1 by bolts. A rubber plate 15 is glued to the side of the protective frame 14 away from the housing 1. The side wall of the rubber plate 15 is glued to the protective frame 14. Multiple rubber plates 15 are spaced apart. A protective plate 16 is glued to the side wall of multiple rubber plates 15 away from the protective frame 14. The surface of the protective plate 16 is curved into an arc shape protruding away from the housing 1.

[0033] Reference Figure 2 Both first flange rings 11 have annular grooves on their adjacent sides, and a sealing ring 12 is embedded in both annular grooves. In this embodiment, the sealing ring 12 is a metal-coated graphite ring. A carrier cylinder 3 is provided inside the housing 1. The peripheral wall of the carrier cylinder 3 has spiral grooves 31. Multiple spiral grooves 31 are spaced apart and have the same spiral direction. A first carrier 4 is provided in the carrier cylinder 3 near the filter cover 23, and a second carrier 5 is provided in the carrier cylinder 3 away from the filter cover 23. A partition plate 6 is provided between the first carrier 4 and the second carrier 5. The two sides of the partition plate 6 abut against the adjacent ends of the two carrier cylinders 3. The partition plate 6 has through holes, and multiple through holes are spaced apart. A retaining ring 33 is integrally formed at the opposite ends of the two carrier cylinders 3. The retaining ring 33 is located between the housing 1 and the first carrier 4 or the second carrier 5.

[0034] When using this three-way catalytic converter, the exhaust gas passes sequentially through the first carrier 4 and the second carrier 5. The exhaust gas pretreated by the first carrier 4 is then treated again by the second carrier 5, which improves the treatment efficiency and effect of the three-way catalytic converter. When maintaining this three-way catalytic converter, after removing the three-way catalytic converter, unscrew the bolts connecting the two first flange rings 11 to separate the two housings 1. At this time, both the first carrier 4 and the second carrier 5 are exposed, making it easy for staff to clean the carriers. The partition plate 6 can reduce the wear caused by the friction between the first carrier 4 and the second carrier 5, making it easy to clean or replace the carriers. The spiral groove 31 on the outer wall of the carrier cylinder 3 can collect the particulate matter generated when the exhaust gas passes through the three-way catalytic converter, reducing the risk of particulate matter accumulation in the exhaust gas causing adhesion between the carrier cylinder 3 and the housing 1, ensuring that the carrier cylinder 3 can be removed from the housing 1, facilitating the disassembly of the housing 1 of the dual-carrier three-way catalytic converter, and facilitating the cleaning or replacement of the carriers.

[0035] The heat sink 13 improves the heat dissipation efficiency of the housing 1, reduces the temperature around the three-way catalytic converter, and ensures the stability and safety of the dual-carrier three-way catalytic converter. The protective plate 16 improves the structural strength of the bottom of the housing 1, reducing the risk of damage to the three-way catalytic converter caused by flying stone impacts and road scrapes. Connecting the protective frame 14 and the protective plate 16 with the rubber plate 15 reduces the vibration of the three-way catalytic converter caused by flying stone impacts and road scrapes, ensuring the stability and safety of the dual-carrier three-way catalytic converter.

[0036] The filter cover 23 can block larger diameter particles in the exhaust gas, reducing the risk of carrier wear and clogging in the dual-carrier three-way catalytic converter, and ensuring the safety and stability of the dual-carrier three-way catalytic converter. The cone shape of the filter cover 23 increases the filtration area of ​​the filter cover 23, reduces the accumulation of larger diameter particles in the exhaust gas on the surface of the filter cover 23, and reduces the risk of blockage of the vehicle's exhaust system due to filter cover 23 clogging.

[0037] The sealing ring 12 can improve the sealing performance at the connection of the two first flange rings 11, ensure the sealing performance at the connection of the two housings 1 after disassembly and assembly of housing 1, ensure the stability of the dual-carrier three-way catalytic converter in high-temperature environment, and reduce the risk of exhaust gas leakage inside the dual-carrier three-way catalytic converter.

[0038] The retaining ring 33 can reduce the restriction on the first carrier 4 or the second carrier 5, reduce the risk of damage caused by the carrier hitting the connecting pipe 2, facilitate the removal of the carrier from the housing 1, and facilitate the observation of the carrier installation status when cleaning and replacing the carrier.

[0039] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A dual support three-way catalyst characterized by, The three-way catalytic converter includes a housing (1), two housings (1) are symmetrically arranged. A first flange ring (11) is fixed to one end of the housing (1), and the two first flange rings (11) are fixed together by bolts. A connecting pipe (2) is fixed to the other end of the housing (1). A second flange ring (21) for connecting to the vehicle exhaust system is fixed to one end of the connecting pipe (2). A carrier cylinder (3) is provided inside the housing (1). A spiral groove (31) is opened on the carrier cylinder (3). A first carrier (4) and a second carrier (5) are respectively provided in the two carrier cylinders (3). A partition plate (6) is provided between the two carrier cylinders (3). A through hole is opened on the partition plate (6). The partition plate (6) abuts against the carrier cylinder (3). The partition plate (6) is located between the first carrier (4) and the second carrier (5).

2. The dual-carrier three-way catalytic converter according to claim 1, characterized in that: A sealing ring (12) is provided between the two first flange rings (11).

3. The dual-carrier three-way catalytic converter according to claim 2, characterized in that: A filter cover (23) is fixedly connected inside the connecting pipe (2).

4. A dual-carrier three-way catalytic converter according to claim 3, characterized in that: The filter cover (23) is processed into a cone shape.

5. A dual-carrier three-way catalytic converter according to claim 4, characterized in that: A retaining ring (32) is fixedly connected to the carrier cylinder (3).

6. A dual-carrier three-way catalytic converter according to claim 1, characterized in that: A heat sink plate (13) is fixedly attached to the housing (1).

7. A dual support three-way catalyst according to claim 6, characterized in that: A protective frame (14) is fixedly attached to the housing (1), and a protective plate (16) is connected to the protective frame (14).

8. A two-substrate three-way catalyst according to claim 7, characterized in that: A rubber plate (15) is fixedly attached to the protective frame (14), and the rubber plate (15) is fixedly attached to the protective plate (16).

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