Back-stage three-way catalyst
By using the movable mechanism and the filter plate in the three-way catalyst, the problems of inaccurate detection of crushing and blockage of enamel cores are solved, and the replacement process is simplified and the purification effect is improved.
Patent Information
- Application Number
- CN202421128781.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-22
AI Technical Summary
After long-term use of the existing three-way catalyst, the enamel core is prone to breaking and the detection is not accurate enough. The broken pieces will block the exhaust pipe, and there will be many foreign objects inside the shell when replaced, which will affect the purification effect.
A rear-level three-way catalyst is designed, using the coordination of the movable mechanism and the filter plate. Through the coordination of the guide rod, the guide shell and the cleaning brush, the accurate detection and cleaning of the enamel core is achieved to prevent the scattering of broken pieces. Simplify the replacement process.
It improves the detection accuracy of the enamel core, avoids fragments and blocks the pipeline, simplifies the replacement process, and ensures the purification effect of exhaust gas.
Smart Images
Figure CN222184893U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-way catalytic converters, in particular to a rear-stage three-way catalytic converter. Background Art
[0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. The other working principle of the three-way catalytic converter is that when the high-temperature automobile exhaust passes through the purification device and the porous enamel core of the three-way catalytic converter, since the core is equipped with metals such as platinum, rhodium and palladium, it can convert harmful gases such as carbon monoxide, hydrocarbons and nitrogen oxides emitted by the automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction, thereby purifying the automobile exhaust.
[0003] After long-term use, the existing three-way catalytic converter will have its enamel core broken due to high temperature or collision, which will not only affect the purification of exhaust gas, but also affect the exhaust gas discharge. However, after the existing enamel core is broken, it is only possible to detect whether the enamel core is broken based on the experience of the staff, which is not only inaccurate, but also affects the progress of maintenance.
[0004] At the same time, when the enamel core inside the existing three-way catalytic converter is still in use after being broken, the broken pieces will enter the rear pipe with the air, which will affect the discharge of exhaust gas. Moreover, when replacing the enamel core, most of the time, the outer shell is directly cut open and then replaced with a new enamel core. However, there are many foreign objects inside the outer shell, and the staff needs to clean the outer shell before installing the enamel core. Utility Model Content
[0005] The purpose of the utility model is to provide a rear-stage three-way catalytic converter to solve the problems raised in the above background technology.
[0006] To achieve the above object, the utility model provides the following technical solution: a rear-stage three-way catalytic converter includes an intake pipe and a conversion shell connected to one side thereof, and also includes:
[0007] An exhaust pipe connected to one side of the conversion shell, the inner cavity of the conversion shell is provided with a sealing gasket, an enamel core is installed inside the sealing gasket, both sides of the inner cavity of the conversion shell are fixedly connected with guide rods, and the surface of the guide rods is slidably connected with the guide shell;
[0008] A filter plate is fixed to one side of the guide shell, a cleaning brush is fixedly connected to the surface of the filter plate, the bottom of the conversion shell is connected to a detection shell, a blocking cap is threadedly connected to the surface of the detection shell, a movable mechanism is arranged on one side of the inner cavity of the conversion shell, and a positioning mechanism is arranged at the bottom of the conversion shell.
[0009] Preferably, the movable mechanism comprises a positioning rod fixed to the inner wall of the conversion shell, and a movable block is slidably connected to the surface of the positioning rod.
[0010] Preferably, the positioning mechanism comprises a connecting shell fixed to the bottom of the conversion shell and a compression spring fixed to the inner wall thereof, and the other end of the compression spring is fixedly connected to the positioning shell.
[0011] Preferably, the guide shell is designed as a U-shaped structure, and the surface of the guide shell is slidably connected to the inner wall of the conversion shell.
[0012] Preferably, the cleaning brush is made of high temperature resistant iron, and the surface of the cleaning brush is slidably connected to the inner wall of the conversion shell.
[0013] Preferably, both ends of the guide rod are fixedly connected with a blocking plate, and one side of the blocking plate is fixedly connected to the inner wall of the conversion shell.
[0014] Preferably, a groove matching the inner wall of the guide rod is formed on the surface of the sealing gasket, and the guide rod and the sealing gasket are used in conjunction with each other.
[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0016] The utility model can limit the enamel core through the cooperation of the movable mechanism and the filter plate. When the enamel core is broken, the movable mechanism cannot be moved, so that the staff can check the enamel core more conveniently and accurately. At the same time, the broken enamel core can be blocked under the action of the filter plate to prevent the fragments from scattering randomly and clogging the exhaust pipe. In addition, with the cooperation of the guide rod, the guide shell and the cleaning brush, it is convenient for the staff to clean the inner wall of the conversion shell, thus solving the problem that the existing three-way catalytic converter has the problem of inaccurate detection of the enamel core when in use and the broken enamel core will clog the pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;
[0019] Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;
[0020] Figure 4 It is a schematic diagram of a partial three-dimensional unfolded structure in the utility model;
[0021] Figure 5 It is a schematic diagram of a partial three-dimensional structure in the utility model.
[0022] In the figure: 1. intake pipe; 2. conversion shell; 3. exhaust pipe; 4. sealing gasket; 5. enamel core; 6. guide rod; 7. guide shell; 8. filter plate; 9. cleaning brush; 10. detection shell; 11. blocking cap; 12. movable mechanism; 121. positioning rod; 122. movable block; 13. positioning mechanism; 131. connecting shell; 132. compression spring; 133. positioning shell; 14. blocking plate. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-5As shown, the rear-stage three-way catalytic converter includes an intake pipe 1, one side of the intake pipe 1 is connected to a conversion shell 2, one side of the conversion shell 2 is connected to an exhaust pipe 3, the inner cavity of the conversion shell 2 is provided with a sealing gasket 4, and the inner part of the sealing gasket 4 is installed with an enamel core 5. With the cooperation of the intake pipe 1, the exhaust gas after combustion will enter the interior of the conversion shell 2, and the exhaust gas will be filtered and converted under the action of the enamel core 5, and then the purified air will be discharged into the interior of the exhaust pipe 3 through the conversion shell 2, so that the purified air can be discharged, and the exhaust gas can be blocked under the action of the sealing gasket 4, so that the exhaust gas can be filtered through the enamel core 5, and both sides of the inner cavity of the conversion shell 2 are fixedly connected with guide rods 6, and the surface of the guide rods 6 is slidably connected with a guide shell 7, and the guide shell 7 is U The guide shell 7 is designed with a slidable structure, and the surface of the guide shell 7 is connected to the inner wall of the conversion shell 2. Under this action, the guide shell 7 can slide on the surface of the guide rod 6, so that the guide shell 7 will not be easily separated from the surface of the guide rod 6, and the guide shell 7 is prevented from being separated from the guide rod 6 and affecting the subsequent use. A filter plate 8 is fixedly connected to one side of the guide shell 7. The filter plate 8 can block the enamel core 5. When the enamel core 5 is damaged after long-term use, the damaged part can be blocked to prevent the damaged enamel core 5 fragments from being discharged into the exhaust pipe 3 with the air and affecting the discharge of the purified air. A cleaning brush 9 is fixedly connected to the surface of the filter plate 8. The cleaning brush 9 is made of high-temperature resistant iron, and the surface of the cleaning brush 9 is slidable with the inner wall of the conversion shell 2. The filter plate 8 is dynamically connected. Under this action, when the enamel core 5 needs to be replaced, the filter plate 8 can be moved to drive the cleaning brush 9 to clean the inner wall of the conversion shell 2 to prevent more foreign matter from adhering to the inner wall of the conversion shell 2 and affecting the purification effect of the exhaust gas. Both ends of the guide rod 6 are fixedly connected with a blocking plate 14, and one side of the blocking plate 14 is fixedly connected to the inner wall of the conversion shell 2. Under this action, when the filter plate 8 drives the guide shell 7 to move, the guide shell 7 can be limited so that it cannot be separated from the surface of the guide rod 6, so as to prevent the guide shell 7 from driving the filter plate 8 to separate from the surface of the guide rod 6 to affect the subsequent installation of the enamel core 5. The surface of the sealing gasket 4 is provided with a groove that matches the inner wall of the guide rod 6. The guide rod 6 and the sealing gasket 4 are used together. The sealing effect of the sealing gasket 4 can be further improved under the action. The bottom of the conversion shell 2 is connected to the detection shell 10. The surface of the detection shell 10 is threadedly connected with a blocking cap 11. With the cooperation of the detection shell 10, the staff can open the interior of the conversion shell 2, so as to facilitate the staff to detect the enamel core 5 inside the conversion shell 2, and with the cooperation of the blocking cap 11, the detection shell 10 can be blocked to prevent the exhaust gas from being discharged from the detection shell 10. A movable mechanism 12 is provided on one side of the inner cavity of the conversion shell 2. The movable mechanism 12 can detect the enamel core 5, so that the staff can accurately judge whether the enamel core 5 is damaged. A positioning mechanism 13 is provided at the bottom of the conversion shell 2, and the positioning mechanism 13 can cooperate with the blocking cap 11.Thus, the blocking cap 11 is limited for a second time, so that after long-term use, the blocking cap 11 will not be easily separated from the surface of the detection shell 10, thereby improving the stability of the blocking cap 11.
[0025] The movable mechanism 12 includes a positioning rod 121, and there are two positioning rods 121. Both ends of the positioning rod 121 are fixedly connected to the inner wall of the conversion shell 2. The surface of the positioning rod 121 is slidably connected with a movable block 122. The surface of the movable block 122 is slidably connected to the surface of the enamel core 5. Under this action, the staff can enter the interior of the conversion shell 2 from the detection shell 10 through an auxiliary tool and push the movable block 122 to slide on the surface of the positioning rod 121, so that the movable block 122 slides on the surface of the enamel core 5. The movable block 122 can move to the top of the inner cavity of the conversion shell 2, which means that the enamel core 5 is not broken. After the enamel core 5 is broken, the fragments will move to one side of the movable block 122 under the action of the filter plate 8. The movable block 122 cannot move to the top of the inner cavity of the conversion shell 2, which means that the enamel core 5 is broken, and then the enamel core 5 is prepared to be replaced.
[0026] The positioning mechanism 13 includes a connecting shell 131, one side of the connecting shell 131 is fixedly connected to the bottom of the conversion shell 2, the inner cavity of the connecting shell 131 is fixedly connected with a compression spring 132, the other end of the compression spring 132 is fixedly connected with a positioning shell 133, the surface of the positioning shell 133 is slidably connected to the inner wall of the connecting shell 131, and the inner wall of the positioning shell 133 is slidably connected to the surface of the blocking cap 11, under this action, after the blocking cap 11 is tightened, the positioning shell 133 is pushed under the action of the compression spring 132 to make it fit with the surface of the blocking cap 11, and the blocking cap 11 is limited under the action of the shape, so that it will not easily fall off or loosen after long-term use, effectively ensuring the sealing effect of the blocking cap 11 on the detection shell 10.
[0027] It is worth noting that the technical features such as the enamel core 5 and the sealing gasket 4 proposed in this technical solution should be regarded as prior art. The specific structure, working principle, and possible control method and spatial arrangement method of these technical features can be selected according to conventional methods in the field, and this technical solution will not be further elaborated.
[0028] Working principle: First, when it is necessary to detect whether the enamel core 5 is broken, the staff pushes the positioning shell 133 so that it does not contact the blocking cap 11, and then removes the blocking cap 11 from the surface of the detection shell 10, and then inserts the detection shell 10 into the interior of the conversion shell 2 through an auxiliary tool to push the movable block 122, so that the movable block 122 slides on the surface of the enamel core 5, and the movable block 122 can move to the top of the inner cavity of the conversion shell 2 and is not broken. When the movable block 122 cannot move to the top of the inner cavity of the conversion shell 2, it means that the enamel core 5 is broken, which is more convenient. When the enamel core 5 needs to be replaced, the staff can cut the conversion shell 2 and then take out the broken enamel core 5, and then push the filter plate 8 to drive the cleaning brush 9 to slide on the inner wall of the conversion shell 2, thereby cleaning the inside of the conversion shell 2 to prevent foreign matter from affecting the subsequent installation of the enamel core 5. After cleaning, remove the debris, and then replace the enamel core 5 and weld the conversion shell 2.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A rear three-way catalytic converter, comprising an intake pipe (1) and a conversion housing (2) connected to one side thereof, It is characterized in that Also includes: An exhaust pipe (3) connected to one side of the conversion shell (2); the inner cavity of the conversion shell (2) is provided with a sealing gasket (4); an enamel core (5) is installed inside the sealing gasket (4); guide rods (6) are fixedly connected to both sides of the inner cavity of the conversion shell (2); and the surface of the guide rod (6) is slidably connected to a guide shell (7); A filter plate (8) is fixed to one side of the guide shell (7), a cleaning brush (9) is fixedly connected to the surface of the filter plate (8), the bottom of the conversion shell (2) is connected to a detection shell (10), a blocking cap (11) is threadedly connected to the surface of the detection shell (10), a movable mechanism (12) is provided on one side of the inner cavity of the conversion shell (2), and a positioning mechanism (13) is provided at the bottom of the conversion shell (2).
2. The rear three-way catalytic converter according to claim 1, Features: The movable mechanism (12) comprises a positioning rod (121) fixed to the inner wall of the conversion shell (2), and a movable block (122) is slidably connected to the surface of the positioning rod (121).
3. The rear three-way catalytic converter according to claim 1, Features: The positioning mechanism (13) comprises a connecting shell (131) fixed to the bottom of the conversion shell (2) and a compression spring (132) fixed to the inner wall thereof, and the other end of the compression spring (132) is fixedly connected to the positioning shell (133).
4. The rear three-way catalytic converter according to claim 1, Features: The guide shell (7) is designed as a U-shaped structure, and the surface of the guide shell (7) is slidably connected to the inner wall of the conversion shell (2).
5. The rear three-way catalytic converter according to claim 1, Features: The cleaning brush (9) is made of high temperature resistant iron, and the surface of the cleaning brush (9) is slidably connected to the inner wall of the conversion shell (2).
6. The rear three-way catalytic converter according to claim 1, Features: Both ends of the guide rod (6) are fixedly connected to a blocking plate (14), and one side of the blocking plate (14) is fixedly connected to the inner wall of the conversion shell (2).
7. The rear three-way catalytic converter according to claim 1, Features: The surface of the sealing gasket (4) is provided with a groove matched with the inner wall of the guide rod (6), and the guide rod (6) and the sealing gasket (4) are used in conjunction with each other.