Noise reduction type automobile three-way catalyst

Abstract

The utility model discloses a noise reduction type automobile three-way catalyst, which relates to the technical field of three-way catalysts, and comprises a catalyst body and a collecting cylinder, a ceramic carrier is fixed in the catalyst body, one end of the catalyst body is fixedly connected with a baffle, one side of the baffle is rotatably connected with a connecting shaft through a bearing, and the connecting shaft is connected with the collecting cylinder. One end of the connecting shaft is fixedly connected with fan blades, the other end of the connecting shaft is fixedly connected with a cleaning brush, and one side of the cleaning brush abuts against the end of the ceramic carrier. According to the noise reduction type automobile three-way catalyst, the fan blades can be driven to rotate through tail gas, so that the cleaning brush is driven to clean the end of the ceramic carrier, cleaned impurities enter the collecting mechanism to be collected, and the impurities are prevented from being blown into the catalyst body again by airflow; and the noise reduction pad can be mounted on the outer side of the catalyst body through the fixing mechanism, so that noise generated during operation of the catalyst body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of three-way catalytic converter technology, specifically a noise-reducing automotive three-way catalytic converter. Background Technology

[0002] The three-way catalytic converter is the core component of a car's exhaust purification system. Its function is to convert harmful gases emitted by the engine into harmless substances through a catalytic reaction, thereby reducing environmental pollution.

[0003] For example, CN221973623U discloses a three-way catalytic converter for purifying automobile exhaust. After the three-way catalytic converter main pipe and the three-way catalytic converter auxiliary pipe are combined to form a complete three-way catalytic converter, the two can be easily connected and sealed by the engagement of the inner support ring, elastic pad and annular groove. This structure allows for easy assembly and disassembly of the two and their internal components during use, facilitating maintenance, cleaning and replacement. At the same time, it eliminates the need for overall disassembly, reducing the difficulty of work and improving work efficiency.

[0004] In the above-mentioned three-way catalytic converter, a set of fan blades is installed at the air intake when cleaning the inner wall. When the exhaust gas enters the catalytic converter, it will drive the fan blades to rotate, and the fan blades will move the cleaning components to clean the inside. However, the impurities after cleaning will remain inside the catalytic converter. When the exhaust gas comes into contact with the impurities, it will blow them up and disperse them inside the catalytic converter. In addition, the catalytic converter needs to be disassembled when the impurities are discharged, which is a rather cumbersome operation. Utility Model Content

[0005] The purpose of this invention is to provide a noise-reducing automotive three-way catalytic converter to solve the problem mentioned in the background art that existing three-way catalytic converters are not easy to clean internally.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise-reducing automotive three-way catalytic converter, comprising a catalytic converter body and a collection cylinder, wherein a ceramic carrier is fixedly fixed inside the catalytic converter body; a baffle is fixedly connected to one end of the catalytic converter body, and a connecting shaft is rotatably connected to one side of the baffle via a bearing; a fan blade is fixedly connected to one end of the connecting shaft, and a cleaning brush is fixedly connected to the other end of the connecting shaft; one side of the cleaning brush abuts against the end of the ceramic carrier; a collection mechanism is provided on one side of the catalytic converter body; and a protective sleeve a is fitted onto the outside of the catalytic converter body, with a fixing mechanism provided on one side of the protective sleeve a.

[0007] Furthermore, the collection mechanism includes a collection cylinder fixedly connected to the side of the catalyst body near the baffle, a through groove is provided on the side of the catalyst body near the collection cylinder, and a sealing cap is threaded to the outside of the collection cylinder.

[0008] Furthermore, a sealing plug is rotatably connected to the inner side of the sealing cover via a rotating shaft. One side of the sealing plug is a conical surface, and the conical surface abuts against the end of the collecting cylinder. The sealing plug is made of rubber.

[0009] Furthermore, the fixing mechanism includes a protective sleeve b that abuts against one side of the protective sleeve a, and noise reduction pads are fixed to the inner sides of both the protective sleeve b and the protective sleeve a. A positioning rod is fixedly connected to one side of the protective sleeve b.

[0010] Furthermore, a fixing block is connected through the outer side of the positioning rod, one side of the fixing block is fixed to the protective sleeve a, and a locking block is engaged inside the positioning rod. One end of the locking block is rotatably connected to a connecting rod via a rotating shaft.

[0011] Furthermore, one end of the connecting rod is rotatably connected to a sleeve rod via a pivot, a tension spring is fixedly connected to the inner side of the sleeve rod, a fixing rod is fixedly connected to one end of the tension spring, one end of the fixing rod is fixed to the protective sleeve a, and the inside of the sleeve rod is slidably connected to the fixing rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the noise reduction type automotive three-way catalytic converter can drive the fan blades to rotate through the exhaust gas, thereby driving the cleaning brush to clean the end of the ceramic carrier. The cleaned impurities will enter the collection mechanism for collection, preventing the impurities from being blown back into the catalytic converter body by the airflow. The noise reduction pad can be installed on the outside of the catalytic converter body through the fixing mechanism, thereby reducing the noise generated by the catalytic converter body during operation.

[0013] 1. After the vehicle exhaust enters the catalytic converter body, it will drive the fan blades and the connecting shaft on one side to rotate. This causes the cleaning brush at one end of the connecting shaft to scrape off the impurities adhering to the end of the ceramic carrier. The impurities will enter the collection cylinder through the through groove at the bottom of the baffle for collection. When the sealing cover rotates, it will drive the sealing plug to press against the collection cylinder, thereby completing the sealing of the collection cylinder. In this way, the inside of the three-way catalytic converter can be easily cleaned.

[0014] 2. By aligning the positioning rods on both sides of the protective sleeve b with the positioning holes of the fixing blocks on both sides of the protective sleeve a, the fixing mechanism will fix the two together, thereby completing the connection between the protective sleeve a and the protective sleeve b. The noise reduction pads inside the protective sleeve a and the protective sleeve b can absorb the noise generated inside the catalyst body, thereby achieving the purpose of noise reduction. In this way, the above operation can facilitate the noise reduction treatment of the three-way catalytic converter. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the closed cover of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the protective sleeve a of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the closed cover of this utility model;

[0020] Figure 6 This utility model Figure 3 Enlarged view of point A;

[0021] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the sleeve rod of this utility model.

[0022] In the diagram: 1. Catalyst body; 2. Ceramic carrier; 3. Fan blade; 4. Connecting shaft; 5. Baffle; 6. Cleaning brush; 7. Collection cylinder; 8. Through groove; 9. Sealing cover; 10. Sealing plug; 11. Protective sleeve a; 12. Protective sleeve b; 13. Noise reduction pad; 14. Positioning rod; 15. Locking block; 16. Connecting rod; 17. Sleeve rod; 18. Tension spring; 19. Fixing rod; 20. Fixing block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figures 1-5 This utility model provides the following technical solution: a noise-reducing automotive three-way catalytic converter, comprising a catalytic converter body 1 and a collection cylinder 7. A ceramic carrier 2 is fixed inside the catalytic converter body 1. A baffle 5 is fixedly connected to one end of the catalytic converter body 1. A connecting shaft 4 is rotatably connected to one side of the baffle 5 via a bearing. A fan blade 3 is fixedly connected to one end of the connecting shaft 4. A cleaning brush 6 is fixedly connected to the other end of the connecting shaft 4. One side of the cleaning brush 6 abuts against the end of the ceramic carrier 2. A collection mechanism is provided on one side of the catalytic converter body 1. The collection mechanism includes a collection cylinder 7 fixedly connected to the side of the catalytic converter body 1 near the baffle 5. A through groove 8 is opened on the side of the catalytic converter body 1 near the collection cylinder 7. A sealing cover 9 is threadedly connected to the outer side of the collection cylinder 7. A sealing plug 10 is rotatably connected to the inner side of the sealing cover 9 via a rotating shaft. One side of the sealing plug 10 is a conical surface, and the conical surface abuts against the end of the collection cylinder 7. The sealing plug 10 is made of rubber. The sealing cover 9 and the collection cylinder 7 form a threaded transmission structure.

[0025] Please see Figures 1-5 In this noise-reducing automotive three-way catalytic converter, after exhaust gas enters the converter, it comes into contact with the fan blade 3, causing the fan blade 3 to rotate. The rotation of the fan blade 3 drives the connecting shaft 4 on one side to rotate, causing the cleaning brush 6 at one end of the connecting shaft 4 to rotate as well. During rotation, the brush 6 contacts the end of the ceramic carrier 2, scraping off impurities adhering to the end of the ceramic carrier 2. This prevents impurities from obstructing the gas entering the ceramic carrier 2 and pushes the impurities away. Due to the obstruction of the baffle 5, no airflow passes through the portion of the ceramic carrier 2 corresponding to the baffle 5. Therefore, when impurities roll to the bottom, they enter the collection cylinder 7 through the through-groove 8 at the bottom of the baffle 5 for collection. The baffle 5 prevents airflow from entering the collection cylinder 7, causing the impurities collected in the collection cylinder 7 to fly out and return to the inside of the catalytic converter body 1. When it is necessary to clean the collection cylinder... When cleaning impurities in the collection cylinder 7, the sealing cover 9 is rotated to engage with the collection cylinder 7 via a threaded connection. Rotating the sealing cover 9 will cause the inner sealing plug 10 to disengage from the collection cylinder 7. Once the sealing cover 9 is disengaged from the collection cylinder 7, the impurities in the collection cylinder 7 can be discharged and cleaned. After cleaning, the sealing cover 9 can be rotated back to connect with the collection cylinder 7. The sealing cover 9 will then move the sealing plug 10 closer to the collection cylinder 7. The sealing plug 10 will contact the end of the collection cylinder 7 through its conical surface on one side. Since the sealing plug 10 and the sealing cover 9 are rotatably connected, the sealing plug 10 will not rotate after it comes into contact with the collection cylinder 7, reducing friction with the collection cylinder 7. The sealing cover 9 will continue to push the sealing plug 10 to press tightly against the collection cylinder 7, thus sealing the collection cylinder 7. This operation facilitates the cleaning of the interior of the three-way catalytic converter.

[0026] Example 2: Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7Based on Embodiment 1, an installation structure for the noise reduction pad 13 is also disclosed, the specific structure of which is as follows: a protective sleeve a11 is fitted onto the outside of the catalyst body 1, and a fixing mechanism is provided on one side of the protective sleeve a11. The fixing mechanism includes a protective sleeve b12 that abuts against one side of the protective sleeve a11. Noise reduction pads 13 are fixed to the inner sides of both the protective sleeve b12 and the protective sleeve a11. A positioning rod 14 is fixedly connected to one side of the protective sleeve b12. A fixing block 20 is connected through the outer side of the positioning rod 14. One side of the fixing block 20 is fixed to the protective sleeve a11. A locking block 15 is engaged inside the positioning rod 14. One end of the locking block 15 passes through... A connecting rod 16 is rotatably connected to a rotating shaft. The connecting rod 16 and the locking block 15 form a rotating structure through the rotating shaft. The positioning rod 14 has a locking groove inside that matches the locking block 15. The locking block 15 and the positioning rod 14 form a locking structure. One end of the connecting rod 16 is rotatably connected to a sleeve rod 17 through the rotating shaft. A tension spring 18 is fixedly connected to the inner side of the sleeve rod 17. One end of the tension spring 18 is fixedly connected to a fixing rod 19. One end of the fixing rod 19 is fixed to the protective sleeve a11. The inside of the sleeve rod 17 is slidably connected to the fixing rod 19. The inside of the sleeve rod 17 has a limiting movement groove that matches the fixing rod 19. The fixing rod 19 and the sleeve rod 17 form a sliding structure.

[0027] In this noise-reducing automotive three-way catalytic converter, to reduce noise in the catalytic converter body 1, the positioning rods 14 on both sides of the protective sleeve b12 are aligned with the positioning holes of the fixing blocks 20 on both sides of the protective sleeve a11. When the positioning rod 14 contacts the inclined surface on one side of the locking block 15, the locking block 15 moves and rotates the pushing connecting rod 16. The connecting rod 16 then pushes the sleeve rod 17 to slide outside the fixing rod 19, causing the sleeve rod 17 to pull the tension spring 18. When the locking block 15 contacts the slot inside the positioning rod 14, the tension spring 18 pulls the sleeve rod 17 to reset. At this time, the locking block... 15 will also reset and engage with the positioning rod 14, thereby completing the connection between the protective sleeve a11 and the protective sleeve b12. The noise reduction pad 13 inside the protective sleeve a11 and the protective sleeve b12 can absorb the noise generated inside the catalyst body 1, thereby achieving the purpose of noise reduction. When the three-way catalytic converter needs to be disassembled and maintained, by pulling the sleeve rod 17, the two sets of connecting rods 16 are rotated. The connecting rod 16 will pull the locking block 15 to move and disengage from the positioning rod 14. Then the positioning rod 14 and the protective sleeve a11 can be separated. In this way, the noise reduction treatment of the three-way catalytic converter can be easily carried out through the above operation.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A noise-reducing automotive three-way catalytic converter, comprising a catalytic converter body (1) and a collection cylinder (7), wherein a ceramic carrier (2) is fixed inside the catalytic converter body (1). Its features are: A baffle (5) is fixedly connected to one end of the catalyst body (1). A connecting shaft (4) is rotatably connected to one side of the baffle (5) via a bearing. A fan blade (3) is fixedly connected to one end of the connecting shaft (4). A cleaning brush (6) is fixedly connected to the other end of the connecting shaft (4). One side of the cleaning brush (6) abuts against the end of the ceramic carrier (2). A collection mechanism is provided on one side of the catalyst body (1). The protective sleeve a (11) is fitted onto the outside of the catalyst body (1), and a fixing mechanism is provided on one side of the protective sleeve a (11).

2. The noise-reducing automotive three-way catalytic converter according to claim 1, characterized in that: The collection mechanism includes a collection cylinder (7) fixedly connected to the side of the catalyst body (1) near the baffle (5). A through groove (8) is provided on the side of the catalyst body (1) near the collection cylinder (7). A sealing cap (9) is threadedly connected to the outside of the collection cylinder (7).

3. The noise-reducing automotive three-way catalytic converter according to claim 2, characterized in that: The inner side of the closed cover (9) is rotatably connected to a sealing plug (10) via a rotating shaft. One side of the sealing plug (10) is a conical surface, and the conical surface abuts against the end of the collecting cylinder (7). The sealing plug (10) is made of rubber.

4. A noise-reducing automotive three-way catalytic converter according to claim 1, characterized in that: The fixing mechanism includes a protective sleeve b (12) that abuts against one side of the protective sleeve a (11). Noise-reducing pads (13) are fixed on the inner sides of both the protective sleeve b (12) and the protective sleeve a (11). A positioning rod (14) is fixedly connected to one side of the protective sleeve b (12).

5. A noise-reducing automotive three-way catalytic converter according to claim 4, characterized in that: A fixing block (20) is connected through the outside of the positioning rod (14). One side of the fixing block (20) is fixed to the protective sleeve a (11). A locking block (15) is engaged inside the positioning rod (14). One end of the locking block (15) is rotatably connected to a connecting rod (16) via a rotating shaft.

6. A noise-reducing automotive three-way catalytic converter according to claim 5, characterized in that: One end of the connecting rod (16) is rotatably connected to a sleeve rod (17) via a rotating shaft. A tension spring (18) is fixedly connected to the inner side of the sleeve rod (17). One end of the tension spring (18) is fixedly connected to a fixing rod (19). One end of the fixing rod (19) is fixed to the protective sleeve a (11). The inside of the sleeve rod (17) is slidably connected to the fixing rod (19).

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