Outlet cooling device for a three-way catalyst drying furnace

Abstract

The application relates to an outlet cooling device of a three-way catalyst drying furnace, and relates to the field of three-way catalyst processing devices, which comprises a supporting grid for placing three-way catalysts and a cooling box, the supporting grid is located on the cooling box, a fan is arranged in the cooling box, a wind guide cavity and a wind distribution cavity are arranged between the air outlet of the fan and the supporting grid, a wind guide plate is arranged on the side wall of the wind guide cavity, a first wind swinging unit for up-down wind swinging and a second wind swinging unit for left-right wind swinging are arranged in the wind distribution cavity, a driving assembly for driving the first wind swinging unit to swing is arranged on the cooling box, and the first wind swinging unit drives the second wind swinging unit to swing through a connecting assembly. The application has the effects of improving the uniformity of three-way catalyst cooling and effectively avoiding cracks of the three-way catalyst.

Description

Technical Field

[0001] This application relates to the field of three-way catalyst processing equipment, and in particular to a cooling device for the outlet of a three-way catalyst drying furnace. Background Technology

[0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction reactions.

[0003] In the manufacturing of three-way catalysts, the three-way catalysts need to be placed in a drying oven for drying. When the three-way catalysts are removed from the drying oven, they need to be cooled down. The traditional cooling method is air cooling, which uses a fan to blow air onto the three-way catalyst to cool it down. However, the air volume distribution at the fan outlet is uneven, which makes the surface of the three-way catalyst cool unevenly, resulting in cracks in the three-way catalyst. Summary of the Invention

[0004] In order to improve the problem of uneven surface cooling of three-way catalysts, which leads to cracks in the three-way catalysts, this application provides a cooling device for the outlet of a three-way catalyst drying furnace.

[0005] The technical solution for the outlet cooling device of a three-way catalyst drying furnace provided in this application is as follows:

[0006] A cooling device for the outlet of a three-way catalyst drying furnace includes a support grid for placing the three-way catalyst and a cooling box. The support grid is located on the cooling box. A fan is provided inside the cooling box. An air guide cavity and an air distribution cavity are provided between the air outlet of the fan and the support grid. An air guide plate is provided on the side wall of the air guide cavity. A first swing unit for vertical swinging and a second swing unit for horizontal swinging are provided inside the air distribution cavity. A driving assembly for driving the first swing unit to swing is provided on the cooling box. The first swing unit drives the second swing unit to swing through a connecting assembly.

[0007] By adopting the above technical solution, when cooling the three-way catalyst, the fan is started, and the fan blows air into the air guide cavity. After the initial guidance of the air guide plate, the airflow enters the air distribution cavity. The drive component drives the first swing unit to swing the airflow up and down in the air distribution cavity. Then, when the first swing unit swings, it drives the second swing unit to swing the airflow left and right through the connecting component. This guides the airflow in the middle of the airflow to the edge, increasing the airflow at the edge position. This makes the air blown out from the support grille more uniform, thereby improving the uniformity of cooling of the three-way catalyst and effectively preventing cracks from forming in the three-way catalyst.

[0008] In one specific implementation, the first swing unit includes a plurality of air distribution plates disposed within the air distribution cavity, the plurality of air distribution plates being spaced apart, and each air distribution plate being rotatably disposed relative to the side wall of the air distribution cavity.

[0009] By adopting the above technical solution, the driving component drives the air distribution plate to rotate, thereby changing the direction of the airflow between the two air distribution plates, thus realizing the adjustment of the air volume at various positions of the airflow cross section.

[0010] In one specific implementation, the drive assembly includes a drive motor mounted on the cooling box, a cam coaxially mounted on the output shaft of the drive motor, a drive rod slidably mounted on the cooling box, one end of the drive rod extending into the air distribution chamber, a sliding block rotatably mounted on the drive rod, the sliding block corresponding one-to-one with the air distribution plate, the air distribution plate having a sliding groove for the sliding block to slide along the width direction of the air distribution plate, a first baffle and a second baffle at the end of the drive rod extending out of the cooling box, the cam being located between the first baffle and the second baffle, the cam pushing the first baffle to move causing the air distribution plate to rotate, and the cam pushing the second baffle to move causing the air distribution plate to rotate in the opposite direction.

[0011] By adopting the above technical solution, when the air distribution plate disturbs the airflow, the drive motor drives the cam to rotate. When the cam's protrusion pushes the first baffle to move upward, the first baffle drives the drive rod to slide upward. The drive rod drives the sliding block to slide in the sliding groove. While the sliding block slides in the sliding groove, it drives the air distribution plate to rotate upward, thereby adjusting the airflow above the airflow. When the cam's protrusion pushes the second baffle to slide downward, the second baffle drives the air distribution plate to rotate downward through the drive rod, thereby adjusting the airflow below the airflow. The air distribution plate rotates back and forth under the continuous rotation of the drive motor, thereby adjusting the airflow above and below the airflow.

[0012] In one specific implementation, the second swing unit includes two swing rods, two support rods, and an elastic windbreak cloth. The two swing rods are rotatably mounted on the opposite sidewalls of two adjacent air distribution plates. The swing rods are rotatable in the plane of the air distribution plates. The two support rods are located at the two ends of the swing rods. The two ends of each support rod are rotatably mounted to the swing rod on the same side. The swing rods and the support rods form a parallelogram structure. The elastic windbreak cloth is fixedly connected to the swing rods and the support rods.

[0013] By adopting the above technical solution, when the air distribution plate swings, the swing rod rotates with the air distribution plate, and the swing rod drives the two support rods to deform, so that the parallelogram formed by the swing rod and the two support rods deforms. At the same time, the elastic windbreak cloth undergoes elastic deformation with the deformation of the support rods and the swing rod. As a result of the rotation of the air distribution plate, the air distribution plate drives the swing rod to rotate around the rotation point in the plane where the air distribution plate is located, which swings the air volume in the middle of the airflow to both sides, thereby realizing the adjustment of the air volume on the left and right sides of the airflow.

[0014] In one specific implementation, the cooling box is provided with several sets of rotating shafts, each set of rotating shafts corresponds to one air distribution plate, and the rotating shaft is inserted into the air distribution plate and rotates with the air distribution plate.

[0015] The connecting assembly includes a drive gear coaxially fixed on the rotating shaft, a drive screw rotatably mounted on the air distribution plate, the drive screw being arranged along the length direction of the air distribution plate, a driven gear coaxially fixed on the drive screw for meshing with the drive gear, a drive block slidably mounted on the air distribution plate, the drive screw passing through the drive block and threadedly connected to the drive block, and a drive groove for the drive block to slide on the swing rod, the drive groove being arranged along the length direction of the swing rod.

[0016] By adopting the above technical solution, when the air distribution plate rotates, the air distribution plate rotates around the rotation axis, the drive gear on the air distribution plate rotates and drives the drive screw to rotate, the drive screw drives the drive block to slide left and right along the air distribution plate, and the drive block drives the swing rod to swing left and right while sliding in the drive groove, thereby realizing the drive of the swing rod.

[0017] In one specific implementation, the air guide cavity and the air distribution cavity are inclined, and the air guide plate is disposed at one end of the air guide cavity near the air distribution cavity, with one end of the air guide plate inclined toward the air distribution cavity.

[0018] By adopting the above technical solution, the airflow will be reflected at the corner due to the inclined arrangement of the air guide cavity and the air distribution cavity. This reflection can increase the turbulence of the airflow, and the increased turbulence of the airflow through the air distribution plate can increase the uniformity of the airflow.

[0019] In one specific implementation, the cooling box is provided with a uniformly distributed grid, which is located between the supporting grid and the air distribution plate.

[0020] By adopting the above technical solution, the airflow blown out of the cooling box is further diverted by the uniformly distributed grid, making the airflow blown out of the cooling box more uniform.

[0021] In one specific implementation scheme, the inlet of the fan is connected to an air guide pipe, the cooling box is equipped with a dust removal water tank, the air guide pipe is connected to the dust removal water tank, the inlet of the air guide pipe is located above the water surface of the dust removal water tank, the dust removal water tank is connected to an air inlet pipe, the air inlet pipe is located below the water surface of the dust removal water tank, and an air pump is connected to the air inlet pipe.

[0022] By adopting the above technical solution, before starting the fan, the air pump is started first. The air pump introduces air into the dust removal water tank, and then the air passes through the water to remove dust. At the same time, the contact between the air and the water can reduce the air temperature. The fan draws in the air from the dust removal water tank through the air duct, pressurizes it and then discharges it. This can effectively prevent dust in the air from adhering to the three-way catalyst, and at the same time, reducing the air temperature can improve the cooling efficiency of the three-way catalyst.

[0023] In one specific implementation, the air duct is provided with a dehumidification layer.

[0024] By adopting the above technical solution, the humidity of the air flowing out of the dust removal water tank can be reduced through the dehumidification layer.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When cooling the three-way catalytic converter, the fan is started, and the fan blows air into the air guide cavity. After the initial guidance of the air guide plate, the airflow enters the air distribution cavity. The drive assembly drives the first swing unit to swing the airflow up and down in the air distribution cavity. Then, when the first swing unit swings, it drives the second swing unit to swing the airflow left and right through the connecting assembly, guiding the airflow in the middle to the edge, increasing the airflow at the edge, thereby making the air blown out from the support grille more uniform, thus improving the uniformity of cooling of the three-way catalytic converter and effectively preventing cracks from forming in the three-way catalytic converter.

[0027] 2. First, start the air pump. The air pump will introduce air into the dust removal water tank. When the air comes into contact with the water, it can not only remove dust from the air, but also reduce the air temperature. The fan will draw in the air from the dust removal water tank through the air duct, pressurize it and then discharge it. This can effectively prevent dust from the air from adhering to the three-way catalytic converter. At the same time, reducing the air temperature can improve the cooling efficiency of the three-way catalytic converter. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a three-way catalyst drying furnace outlet cooling device according to an embodiment of this application.

[0029] Figure 2 This is a structural schematic diagram used to demonstrate the first swing unit.

[0030] Figure 3It is a structural diagram used to illustrate the driving component.

[0031] Figure 4 yes Figure 3 Enlarged view of section A.

[0032] Figure 5 This is a structural schematic diagram used to demonstrate the second swing unit.

[0033] Figure 6 It is along Figure 5 A cross-sectional view along the BB line.

[0034] Figure 7 yes Figure 6 Enlarged view of section C.

[0035] Figure 8 This is a structural schematic diagram used to illustrate the drive slot.

[0036] Explanation of reference numerals in the attached drawings: 1. Support grille; 2. Cooling box; 21. Drive box; 22. Air guide cavity; 23. Air distribution cavity; 24. Exhaust cavity; 25. Fan; 26. Air guide plate; 27. Evenly distributed grille; 3. First swing unit; 31. Air distribution plate; 32. Rotating shaft; 4. Second swing unit; 41. Swing rod; 42. Support rod; 43. Permeable windbreak cloth; 5. Drive assembly; 51. Drive motor; 52. Cam; 53. Drive rod; 54. Sliding block; 55. Sliding groove; 56. First baffle; 57. Second baffle; 6. Connecting assembly; 61. Drive gear; 62. Slide groove; 63. Drive screw; 64. Driven gear; 65. Drive block; 66. Slider; 67. Drive groove; 71. Dust removal water tank; 72. Air guide pipe; 73. Air pump; 74. Air inlet pipe; 75. Dehumidification layer. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0038] This application discloses an outlet cooling device for a three-way catalyst drying furnace.

[0039] Reference Figure 1 , Figure 2 and Figure 3A cooling device for the outlet of a three-way catalyst drying furnace includes a supporting grid 1 and a cooling box 2. The supporting grid 1 is located on top of the cooling box 2 and is connected to the interior of the cooling box 2. The cooling box 2 has two vertical plates and one horizontal plate, which together form a drive box 21. The drive box 21 divides the cooling box 2 into a guide air chamber 22, a distribution air chamber 23, and an exhaust air chamber 24. The guide air chamber 22 and the exhaust air chamber 24 are arranged parallel to each other. The distribution air chamber 23 is located between the guide air chamber 22 and the exhaust air chamber 24. Both the guide air chamber 22 and the exhaust air chamber 24 are arranged perpendicular to the distribution air chamber 23. A fan 25 is fixedly installed on the side wall of the guide air chamber 22, and the air inlet of the fan 25 extends to the outside of the cooling box 2. The air outlet of the fan 25 faces downward. Several air guide plates 26 are provided at the connection between the air guide cavity 22 and the air distribution cavity 23, and between the air distribution cavity 23 and the exhaust cavity 24. Each air guide plate 26 is fixedly connected to the inner side wall of the cooling box 2. Each air guide plate 26 is bent towards the air distribution cavity 23. The air distribution cavity 23 is provided with a first swing unit 3 for vertical swing and a second swing unit 4 for horizontal swing. The drive box 21 is provided with a drive assembly 5 for driving the first swing unit 3 to swing. The first swing unit 3 drives the second swing unit 4 to swing through the connecting assembly 6. A uniformly distributed grille 27 is fixedly provided on the side wall of the exhaust cavity 24. The uniformly distributed grille 27 is located below the support grille 1.

[0040] When cooling the three-way catalyst coming out of the drying oven, the blower 25 is started first. The airflow from the blower 25 enters the air guide cavity 22, and the airflow enters the air distribution cavity 23 along the air guide plate 26 in the air guide cavity 22. The air guide plate 26 not only guides the airflow, but also increases the turbulence of the airflow. As the airflow enters the air distribution cavity 23, the drive assembly 5 drives the first swing unit 3 to swing the airflow from the center position to the upper and lower sides. Then, the first swing unit 3 drives the second swing unit 4 to swing the airflow from the center position to the left and right sides through the connecting assembly 6, thereby increasing the airflow at the edge position of the airflow and making the airflow more uniform at all positions. Then the airflow enters the exhaust cavity 24, and the airflow is guided again by the uniformly distributed grid 27, thereby making the airflow more uniform, improving the uniformity of cooling of the three-way catalyst, and effectively preventing the three-way catalyst from cracking.

[0041] Reference Figure 1 , Figure 2 A dust removal water tank 71 is provided on the outside of the cooling box 2. A guide pipe 72 is connected to the inlet of the fan 25. The end of the guide pipe 72 away from the fan 25 is inserted into the top of the dust removal water tank 71 and connected to the dust removal water tank 71. The dust removal water tank 71 is filled with clean water. The guide pipe 72 is located above the water surface. An air pump 73 is provided on the ground. An air inlet pipe 74 is connected to the outlet end of the air pump 73. One end of the air inlet pipe 74 is inserted into the dust removal water tank 71 and located below the water surface. A dehumidification layer 75 is placed inside the guide pipe 72. In this embodiment, the dehumidification layer 75 is a desiccant layer.

[0042] When cooling the three-way catalyst, the air pump 73 is turned on first. The air pump 73 introduces air into the dust removal water tank 71 through the air inlet pipe 74. Then, the air comes into contact with water to remove dust from the air. At the same time, the water can lower the temperature of the air. The fan 25 draws in the dust-removed air from the dust removal water tank 71 through the air guide pipe 72 and pressurizes it before discharging it into the cooling box 2. This improves the cooling efficiency of the three-way catalyst and effectively reduces the adhesion of dust in the air to the three-way catalyst. The dehumidification layer 75 can dry the air and keep the surface of the three-way catalyst dry.

[0043] Reference Figure 2 , Figure 3 and Figure 4 The first oscillating unit 3 includes several air distribution plates 31. In this embodiment, there are three air distribution plates 31, which are arranged vertically at intervals. Three sets of rotating shafts 32 are fixedly provided on the side wall of the air distribution cavity 23. One air distribution plate 31 corresponds to one set of rotating shafts 32. Each set of rotating shafts 32 has two shafts, which are located on both sides of the air distribution plate 31. Each rotating shaft 32 is inserted into the air distribution plate 31 and rotates with the air distribution plate 31. The driving assembly 5 includes a driving motor 51. A cam 52 is coaxially fixed on the output shaft of the driving motor 51. A driving rod 53 is provided in the driving box 21, and the driving rod 53 passes through the driving... The drive rod 53 is arranged vertically and has three sliding blocks 54 rotatably mounted on it. Each sliding block 54 corresponds to a distribution plate 31. The side wall of the distribution plate 31 has a sliding groove 55 for the sliding blocks 54 to slide. The sliding groove 55 is arranged along the length of the distribution plate 31. At the end of the drive rod 53 that extends into the drive box 21, a first baffle 56 and a second baffle 57 are fixedly mounted. The first baffle 56 and the second baffle 57 are arranged parallel to each other. The drive rod 53 is arranged perpendicular to the first baffle 56 and the second baffle 57. The cam 52 is located between the first baffle 56 and the second baffle 57.

[0044] When the airflow is oscillating, the drive motor 51 is started, and the drive motor 51 drives the cam 52 to rotate. When the cam 52 pushes the first baffle 56 to move upward, the first baffle 56 drives the drive rod 53 to move upward. The drive rod 53 drives the sliding block 54 to rotate while sliding along the sliding groove 55. While sliding in the sliding groove 55, the sliding block 54 pushes the air distribution plate 31 to rotate upward, thereby oscillating the airflow in the middle position upward. When the cam 52 pushes the second baffle 57 to move downward, the drive rod 53 drives the air distribution plate 31 to rotate downward through the sliding block 54, so that the air distribution plate 31 guides the airflow in the middle position downward, thereby realizing the up and down oscillation of the airflow and making the airflow volume at the upper and lower edges of the airflow more uniform.

[0045] Reference Figure 5 , Figure 6 and Figure 7The second swing unit 4 includes two swing rods 41, two support rods 42, and an elastic windproof cloth 43. The two swing rods 41 are located on opposite sides of the two air distribution plates 31. The lower swing rod 41 is hinged to the corresponding air distribution plate 31 and rotates along the surface of the air distribution plate 31. The two support rods 42 are located at both ends of the swing rods 41. One end of each support rod 42 is hinged to the swing rod 41, and the other end of each support rod 42 is hinged to the other swing rod 41. The two swing rods 41 and the two support rods 42 together form a parallelogram structure. The elastic windproof cloth 43 is made of WPM waterproof and breathable fabric. Each edge of the elastic windproof cloth 43 is connected to a support rod 42. The swing arm 41 is fixedly connected. The connecting assembly 6 includes three drive gears 61, each corresponding to a wind distribution plate 31. Each drive gear 61 is fixedly sleeved on a rotating shaft 32. The wind distribution plate 31 is provided with a sliding groove 62, which is set along the width direction of the wind distribution plate 31. The wind distribution plate 31 is provided with a drive screw 63, which is set along the length direction of the sliding groove 62. One end of the drive screw 63 is inserted into the wind distribution plate 31 and rotates with the wind distribution plate 31. The other end of the drive screw 63 passes through the wind distribution plate 31 and rotates with the wind distribution plate 31. At the end of the drive screw 63 that extends out of the wind distribution plate 31, a driven gear 64 that meshes with the drive gear 61 is fixedly provided coaxially.

[0046] Reference Figure 7 , Figure 8 A drive block 65 is slidably provided in the slide groove 62. A drive screw 63 passes through the drive block 65 and is threadedly connected to the drive block 65. A slider 66 is rotatably provided on the drive block 65. A drive groove 67 is provided on the swing rod 41 for the slider 66 to slide. The drive groove 67 is set along the length direction of the swing rod 41.

[0047] When the air distribution plate 31 swings up and down, the driven gear 64 rotates along the drive gear 61 and generates its own rotation. The driven gear 64 drives the drive screw 63 to rotate. The drive screw 63 drives the drive block 65 to slide left and right along the slide groove 62. The drive block 65 drives the slider 66 to rotate while sliding in the drive groove 67. The slider 66 pushes the swing rod 41 to swing left and right along the air distribution plate 31. The swing rod 41 drives the elastic windproof cloth 43 to swing left and right, thereby realizing the airflow at the center position to the two sides and edges, so that the airflow at the edge position is more uniform.

[0048] The implementation principle of the cooling device at the outlet of a three-way catalyst drying furnace in this application embodiment is as follows: When cooling the three-way catalyst, the fan 25 is started, and the fan 25 blows air into the air guide cavity 22. After the initial guidance of the air guide plate 26, the airflow enters the air distribution cavity 23. The drive assembly 5 drives the first swing unit 3 to swing the airflow in the air distribution cavity 23 up and down. Then, when the first swing unit 3 swings, it drives the second swing unit 4 to swing the airflow left and right through the connecting assembly 6. Thus, the airflow in the middle of the airflow is guided to the edge, increasing the airflow at the edge position, thereby making the air blown out from the support grid 1 more uniform, thereby improving the uniformity of cooling of the three-way catalyst and effectively preventing the three-way catalyst from cracking.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cooling device for the outlet of a three-way catalyst drying furnace, characterized in that: The device includes a support grid (1) for placing a three-way catalyst and a cooling box (2). The support grid (1) is located on the cooling box (2). A fan (25) is provided inside the cooling box (2). An air guide cavity (22) and an air distribution cavity (23) are provided between the air outlet of the fan (25) and the support grid (1). An air guide plate (26) is provided on the side wall of the air guide cavity (22). A first swing unit (3) for vertical swinging and a second swing unit (4) for horizontal swinging are provided inside the air distribution cavity (23). A driving assembly (5) for driving the first swing unit (3) to swing is provided on the cooling box (2). The first swing unit (3) drives the second swing unit (4) to swing through the connecting assembly (6). The first swing unit (3) includes a plurality of air distribution plates (31) disposed in the air distribution cavity (23). The plurality of air distribution plates (31) are spaced apart, and each air distribution plate (31) is rotatably disposed with respect to the side wall of the air distribution cavity (23). The second swing unit (4) includes two swing rods (41), two support rods (42), and an elastic windproof cloth (43). The two swing rods (41) are rotatably mounted on the opposite side walls of two adjacent air distribution plates (31). The swing rods (41) can rotate in the plane of the air distribution plate (31). The two support rods (42) are located at the two ends of the swing rods (41). The two ends of each support rod (42) are rotatably mounted with the swing rods (41) on the same side. The swing rods (41) and the support rods (42) form a parallelogram structure. The elastic windproof cloth (43) is fixedly connected to the swing rods (41) and the support rods (42). The cooling box (2) is provided with several sets of rotating shafts (32), each set of rotating shafts (32) corresponds to one air distribution plate (31), the rotating shafts (32) are inserted into the air distribution plate (31) and rotate with the air distribution plate (31); The connecting assembly (6) includes a drive gear (61) coaxially fixed on the rotating shaft (32), a drive screw (63) rotatably provided on the air distribution plate (31), the drive screw (63) being arranged along the length direction of the air distribution plate (31), a driven gear (64) coaxially fixed on the drive screw (63) for meshing with the drive gear (61), a drive block (65) slidably provided on the air distribution plate (31), the drive screw (63) passing through the drive block (65) and threadedly connected to the drive block (65), and a drive groove (67) provided on the swing rod (41) for the drive block (65) to slide, the drive groove (67) being arranged along the length direction of the swing rod (41).

2. The three-way catalyst drying furnace outlet cooling device according to claim 1, wherein the driving assembly (5) includes a driving motor (51) disposed on the cooling box (2), the output shaft of the driving motor (51) is coaxially provided with a cam (52), a driving rod (53) is slidably disposed on the cooling box (2), one end of the driving rod (53) extends into the air distribution chamber (23), the driving rod (53) is rotatably provided with a sliding block (54), the sliding block (54) corresponds one-to-one with the air distribution plate (31), and the air distribution plate (31) is provided with a sliding block for the sliding block (54) to slide. The sliding groove (55) of the sliding block (54) is arranged along the width direction of the air distribution plate (31). The drive rod (53) has a first baffle (56) and a second baffle (57) at one end extending out of the cooling box (2). The cam (52) is located between the first baffle (56) and the second baffle (57). The cam (52) pushes the first baffle (56) to move, causing the air distribution plate (31) to rotate. The cam (52) pushes the second baffle (57) to move, causing the air distribution plate (31) to rotate in the opposite direction.

3. The outlet cooling device for a three-way catalyst drying furnace according to claim 1, characterized in that: The air guide cavity (22) and the air distribution cavity (23) are inclined together. The air guide plate (26) is located at one end of the air guide cavity (22) near the air distribution cavity (23), and one end of the air guide plate (26) is inclined toward the air distribution cavity (23).

4. The outlet cooling device for a three-way catalyst drying furnace according to claim 1, characterized in that: The cooling box (2) is provided with a uniformly distributed grid (27), which is located between the supporting grid (1) and the air distribution plate (31).

5. The outlet cooling device for a three-way catalyst drying furnace according to claim 1, characterized in that: The inlet of the fan (25) is connected to a duct (72), and the cooling box (2) is provided with a dust removal water tank (71). The duct (72) is connected to the dust removal water tank (71). The inlet of the duct (72) is located above the water surface of the dust removal water tank (71). The dust removal water tank (71) is connected to an air inlet pipe (74), which is located below the water surface of the dust removal water tank (71). An air pump (73) is connected to the air inlet pipe (74).

6. The outlet cooling device for a three-way catalyst drying furnace according to claim 5, characterized in that: The air duct (72) is provided with a dehumidification layer (75).

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