A catalyst coating device for purifying automobile exhaust gas

Abstract

This application relates to a catalyst coating device for automotive exhaust purification, belonging to the field of automotive exhaust treatment technology. It includes a circulating conveying unit and a filling unit mounted on a frame. The circulating conveying unit has several support plates for placing honeycomb carriers, which are placed vertically on the support plates. The filling unit fills the honeycomb carriers with material through a conveying unit. The circulating conveying unit can transport the honeycomb carriers one by one to the conveying unit. The support plates have discharge holes communicating with the honeycomb carriers. The frame has a lifting unit with a sliding reset unit. The sliding reset unit has a sealing plate that blocks the discharge holes. The lifting unit can drive the sealing plate to insert or slide out of the discharge holes, causing the discharge holes to close or open. The sealing plate can move along the sliding reset unit and reset. This application has the effect of separating the filling and discharging of two honeycomb carriers into two processes and performing them simultaneously, improving the catalyst coating efficiency of the honeycomb carriers.

Description

Technical Field

[0001] This application relates to the field of automotive exhaust gas treatment technology, and in particular to an automotive exhaust gas purification catalyst coating device. Background Technology

[0002] With the increasing number of cars on the road, environmental pollution caused by car exhaust emissions has become an urgent problem to be solved. Typically, a honeycomb carrier coated with an exhaust purification catalyst is installed at the car's exhaust position. The exhaust gas is then purified through contact with the catalyst. Therefore, the coating device for exhaust purification catalysts has become a focus of attention.

[0003] Chinese patent CN2724857Y discloses an automatic catalyst coating machine for metal honeycomb carriers. A feed pump delivers the catalyst coating liquid from the lower feed pipe to the upper feed pipe. The coating liquid passes through the lower mold assembly and then through the metal honeycomb carrier. When the coating liquid reaches a certain height, a level switch in the upper mold assembly stops the feed pump and simultaneously switches a three-way solenoid valve to close the upper feed pipe. A negative pressure generator (such as a fan) is then activated, creating a negative pressure in the return tank. The coating liquid then passes through the lower mold assembly and the return pipe into the return tank. However, in this patent, the inflow and outflow of the catalyst coating liquid from the metal honeycomb carrier occur within the same processing flow, resulting in a longer coating time for each individual metal carrier coating process and consequently lower coating efficiency. Summary of the Invention

[0004] To address the issue of low coating efficiency of the metal carrier caused by the catalyst coating liquid flowing into and out of the metal honeycomb carrier occurring in the same processing flow, this application provides a catalyst coating device for automotive exhaust purification.

[0005] The automotive exhaust gas purification catalyst coating device provided in this application adopts the following technical solution: A coating device for an automotive exhaust purification catalyst includes a circulating conveying unit and a filling unit mounted on a frame. The circulating conveying unit is provided with several support plates for placing honeycomb carriers. The honeycomb carriers are placed vertically on the support plates. The filling unit fills the honeycomb carriers with material through a conveying unit. The circulating conveying unit can convey the honeycomb carriers one by one to the conveying unit. The support plate is provided with a discharge hole that communicates with the honeycomb carrier. The frame is provided with a lifting unit, and the lifting unit is provided with a sliding reset unit. The sliding reset unit is provided with a sealing plate for restricting the catalyst coating material in the honeycomb carrier from flowing out of the discharge hole. The lifting unit can drive the sealing plate to insert or slide out of the discharge hole, so that the discharge hole is closed or opened. The sealing plate can move and reset along the sliding reset unit.

[0006] By adopting the above technical solution, when coating the catalyst coating liquid onto the honeycomb carrier, the honeycomb carriers are first placed one by one on the support plate. Then, the support plate with the honeycomb carrier is transported one by one to the feeding unit through the circulation conveying unit. Then, the lifting unit drives the sealing plate to seal the discharge hole through the sliding reset unit. Then, the filling unit fills the honeycomb carrier with catalyst coating liquid through the feeding unit. After the filling is completed, the circulation reset unit drives the honeycomb carrier to move, and the sealing plate slides along the sliding reset unit. Then, when the new honeycomb carrier moves to the feeding unit, the lifting unit drives the sealing plate to pull out the discharge hole, so that the catalyst coating liquid in the honeycomb carrier flows out. The sealing plate is reset to the discharge hole of the new support plate under the action of the sliding reset spring, and the new honeycomb carrier is filled. This allows the catalyst coating liquid to flow into the metal honeycomb carrier and flow out of the metal honeycomb carrier in two separate processes, thereby improving the coating efficiency of the metal carrier.

[0007] In one specific implementation, the support plate is provided with a grid, the grid is laid flat in the discharge hole, the honeycomb carrier is inserted into the discharge hole and placed on the grid, and the sealing plate is inserted into the discharge hole and abuts against the hole wall of the discharge hole.

[0008] By adopting the above technical solution, when installing the honeycomb carrier, the honeycomb carrier is inserted into the discharge hole and abuts against the grid, which facilitates the installation of the honeycomb carrier.

[0009] In one specific implementation, a sealing ring is provided on the peripheral sidewall of the discharge hole, and the sealing ring abuts against the honeycomb carrier.

[0010] By adopting the above technical solution, the stability of the honeycomb carrier installed on the support plate is improved by the tightness between the sealing ring and the honeycomb carrier, and the sealing performance of the connection between the honeycomb carrier and the support plate is improved, effectively preventing the catalyst coating liquid from leaking from the honeycomb carrier and the discharge hole.

[0011] In one specific implementation, the sliding reset unit includes a slide rail and a reset spring. The slide rail is disposed on the lifting unit and is arranged along the sliding direction of the support plate. A slider is provided on the slide rail, and the sealing plate is fixed on the slider. The reset spring is disposed on the slide rail and is fixedly connected to the slider. The sealing plate slides with the support plate, causing the reset spring to contract. The reset spring can push the sealing plate back to its original position.

[0012] By adopting the above technical solution, when the support plate moves the honeycomb carrier that is filled with material, the support plate drives the slider to slide through the sealing plate, so that the catalyst coating liquid can fully adhere to the honeycomb carrier; while the slider slides, the return spring contracts, and when the support plate moves a certain distance, the lifting unit drives the sealing plate to be pulled out of the discharge hole, and at the same time the return spring pushes the slider to slide, so that the sealing plate is reset, which makes it easy to seal the discharge hole on the new support plate.

[0013] In one specific implementation, the filling unit includes a storage tank, a delivery pump, and a delivery pipe. The storage tank is mounted on the frame and is used to store the catalyst coating liquid. The delivery pump and the delivery pipe are both mounted on the frame. One end of the delivery pipe is fixedly connected to the delivery pump, and the other end extends above the honeycomb carrier and faces the honeycomb carrier. One end of the delivery pump is inserted into the storage tank.

[0014] By adopting the above technical solution, when filling the honeycomb carrier, the delivery pump draws out the catalyst coating liquid from the storage tank and transports it through the delivery pipe, which facilitates the stable delivery of the catalyst coating liquid.

[0015] In one specific implementation, a feeding pipe is fixedly provided at the outlet end of the conveying pipe, and a feeding disc is provided inside the feeding pipe. The feeding disc is placed horizontally inside the feeding pipe and is rotatably arranged with the feeding pipe. The feeding disc has a plurality of evenly arranged feeding holes, through which the catalyst coating liquid can pass into the honeycomb carrier. A drive motor is fixedly provided on the outer wall of the feeding pipe, and the output shaft of the drive motor is inserted into the feeding pipe and a drive gear is fixedly provided coaxially. A gear ring is fixedly provided coaxially on the feeding disc, and the gear ring meshes with the drive gear.

[0016] By adopting the above technical solution, the catalyst coating liquid enters the distribution pipe through the delivery pipe. The drive motor drives the drive gear to rotate, and the drive gear drives the distribution disc to rotate in the distribution pipe through the gear ring. This disperses the catalyst coating liquid flowing through the distribution holes, thereby improving the uniformity of the catalyst coating liquid in the distribution pipe and facilitating the filling of the channels of the honeycomb carrier with the catalyst coating liquid.

[0017] In one specific implementation, the feeding unit includes a connecting pipe and a rubber tube. The connecting pipe is slidably mounted on the frame in a vertical direction. The connecting pipe is connected to the feeding pipe via a corrugated pipe. The rubber tube is located at the outlet end of the connecting pipe and can be fitted onto the upper end of the honeycomb carrier and pressed tightly against it. The connecting pipe is provided with an opening unit, which is used to open the port of the rubber tube so that the rubber tube can be fitted onto the honeycomb carrier. The frame is provided with a linear drive mechanism, which can drive the connecting pipe to slide, so that the honeycomb carrier can be inserted into or slid out of the port of the rubber tube.

[0018] By adopting the above technical solution, when the support plate moves the honeycomb carrier to the filling position, the linear drive mechanism drives the connecting tube to move downward, the opening unit opens the end of the rubber tube, and then tightens it on the upper end of the honeycomb carrier, effectively preventing the leakage of catalyst coating liquid during filling; after filling, the opening unit opens the rubber tube again, and then the linear drive mechanism drives the connecting tube to move upward, detaching the rubber tube from the honeycomb carrier, and the support plate drives the honeycomb carrier to slide, thereby improving the convenience of continuous filling of the honeycomb carrier.

[0019] In one specific feasible implementation, a tightening ring is fixedly provided on the rubber tube; The opening unit includes a support ring and several sliding rods. The support ring is fixedly mounted on the connecting pipe and sleeved on the rubber tube. The several sliding rods are evenly arranged along the circumference of the rubber tube and are slidably connected to each other. One end of each sliding rod is fixedly connected to the tightening ring, and the other end is provided with a driving arm arranged along the axial direction of the connecting pipe. The connecting pipe is provided with a driving component for driving the driving arm away from the rubber tube.

[0020] By adopting the above technical solution, when the end of the rubber tube is opened, the driving component drives the driving arm to slide away from the rubber tube. The driving arm drives the tightening ring to open through the slide rod. Then the connecting tube moves down and puts the rubber tube on the honeycomb carrier. Then the driving component is separated from the driving arm, and the tightening ring drives the end of the rubber tube to tighten on the honeycomb carrier, which makes it easy to tighten the rubber tube on the honeycomb carrier.

[0021] In one specific implementation, the driving component includes a cylinder and a driving ring. The cylinder is fixedly mounted on the connecting pipe, and the driving ring is slidably mounted on the connecting pipe. The output shaft of the cylinder is fixedly connected to the driving ring and can drive the driving ring to slide. The driving ring is provided with a driving surface, and the driving arm can slide along the driving surface, so that the driving arm slides away from the rubber tube.

[0022] By adopting the above technical solution, when the tightening ring is opened, the cylinder drives the drive ring to slide along the connecting pipe, the drive ring drives the drive surface to slide towards the drive arm, and the drive arm slides along the drive surface, so that the slide rod drives the tightening ring to open. When the tightening ring needs to be tightened, the cylinder drives the drive surface to slide in the opposite direction, so that the drive surface is separated from the drive arm, the restriction of the slide rod is released, and the tightening ring drives the slide rod to slide and tighten on the honeycomb carrier, which facilitates the opening and tightening of the tightening ring.

[0023] In one specific implementation, the frame is provided with a collection tank for collecting the catalyst coating liquid flowing out of the discharge port.

[0024] By adopting the above technical solution, the catalyst coating liquid flowing out of the discharge hole can be collected, reducing the waste of the catalyst coating liquid.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. When the catalyst coating liquid is coated onto the honeycomb carrier, the lifting unit drives the sealing plate to seal the discharge hole through the sliding reset unit. Then, the filling unit fills the honeycomb carrier with the catalyst coating liquid through the conveying unit. After the filling is completed, the circulation reset unit drives the honeycomb carrier to move. The sealing plate slides along the sliding reset unit. When the new honeycomb carrier moves to the conveying unit, the lifting unit drives the sealing plate to pull out the discharge hole, so that the catalyst coating liquid in the honeycomb carrier flows out. The sealing plate is reset to the discharge hole of the new support plate under the action of the sliding reset spring, and the new honeycomb carrier is sealed and filled. This allows the catalyst coating liquid to flow out of the previous honeycomb carrier and fill the next honeycomb carrier at the same time. This separates the flow of the catalyst coating liquid into the metal honeycomb carrier and the flow out of the metal honeycomb carrier into two processes, thereby improving the coating efficiency of the metal carrier. 2. When the support plate moves the honeycomb carrier to the filling position, the linear drive mechanism drives the connecting tube to move downward, the opening unit opens the end of the rubber tube, and then tightens it on the upper end of the honeycomb carrier, effectively preventing the leakage of catalyst coating liquid during filling; after filling, the opening unit opens the rubber tube again, and then the linear drive mechanism drives the connecting tube to move upward, detaching the rubber tube from the honeycomb carrier, and the support plate drives the honeycomb carrier to slide, thereby improving the convenience of continuous filling of the honeycomb carrier. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an automotive exhaust purification catalyst coating device according to an embodiment of this application.

[0027] Figure 2 It is along Figure 1 A cross-sectional view along line AA in the middle.

[0028] Figure 3 yes Figure 2Enlarged view of section B in the middle.

[0029] Figure 4 It is an exploded view used to display the grille.

[0030] Figure 5 yes Figure 1 Enlarged view of section C.

[0031] Figure 6 yes Figure 2 Enlarged view of section D in the middle.

[0032] Figure 7 yes Figure 1 Enlarged view of section E in the middle.

[0033] Figure 8 yes Figure 2 Enlarged view of section F in the middle.

[0034] Figure 9 It is along Figure 1 A cross-sectional view of the GG line.

[0035] Figure 10 This is a schematic diagram used to illustrate the structure of the reflux pipe.

[0036] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Circulating conveyor unit; 21. Conveyor frame; 22. Conveyor belt mechanism; 3. Filling unit; 31. Storage tank; 32. Conveying pump; 33. Conveying pipe; 341. Distribution pipe; 342. Distribution disc; 343. Distribution hole; 344. Drive motor; 345. Drive gear; 346. Gear ring; 4. Sliding and resetting unit; 41. Slide rail; 42. Reset spring; 43. Slider; 44. Limit block; 45. Collection trough; 46. Return pipe; 5. Support plate; 51. 511. Discharge hole; 512. First hole section; 513. Second hole section; 514. Grating; 515. Sealing ring; 52. Sealing plate; 6. Honeycomb carrier; 7. Conveying unit; 71. Connecting pipe; 72. Rubber hose; 73. Linear drive mechanism; 74. Corrugated pipe; 75. Tightening ring; 76. Opening unit; 761. Support ring; 762. Slide rod; 763. Fixing rod; 764. Drive arm; 77. Drive component; 771. Cylinder; 772. Drive ring; 773. Drive surface; 8. Lifting unit. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0038] This application discloses an automotive exhaust gas purification catalyst coating device.

[0039] Reference Figure 1 , Figure 2A coating device for an automotive exhaust purification catalyst includes a circulating conveying unit 2, a filling unit 3, and a sliding reset unit 4 mounted on a frame 1. In this embodiment, the circulating conveying unit 2 includes a conveyor frame 21 and two sets of conveyor belt mechanisms 22. The two sets of conveyor belt mechanisms 22 are arranged opposite to each other and parallel to each other. The rollers of the conveyor belt mechanisms 22 are rotatably mounted on the conveyor frame 21. A motor is fixedly mounted on the conveyor frame 21, and the motor drives the two sets of conveyor belt mechanisms 22 to rotate simultaneously. Several support plates 5 are fixedly mounted on the conveyor belts of the two sets of conveyor belt mechanisms 22. The several support plates 5 are evenly spaced along the axial direction of the conveyor belts. The honeycomb carrier 6 is vertically placed on the support plates 5. The filling unit 3 fills the honeycomb carrier 6 with material through the conveying unit 7.

[0040] Reference Figure 2 , Figure 3 Each support plate 5 is provided with a discharge hole 51 that is connected to the honeycomb carrier 6. The conveyor frame 21 is provided with a lifting unit 8. In this embodiment, the lifting unit 8 is a hydraulic cylinder. In other embodiments, it can also be a cylinder, a linear motor, etc. The sliding reset unit 4 is fixedly installed on the output shaft of the lifting unit 8. The sliding reset unit 4 is provided with a sealing plate 52 for restricting the catalyst coating material in the honeycomb carrier 6 from flowing out of the discharge hole 51. The lifting unit 8 can drive the sealing plate 52 to insert or slide out of the discharge hole 51, so that the discharge hole 51 is closed or opened. The sealing plate 52 can move along the sliding reset unit 4 and reset.

[0041] When applying the catalyst coating liquid to the honeycomb carrier 6, the honeycomb carriers 6 are first placed one by one on the support plate 5. Then, the support plate 5 with the honeycomb carriers 6 is transported one by one to the conveying unit 7 through the circulation conveying unit 2. Then, the lifting unit 8 drives the sealing plate 52 to seal the discharge hole 51 through the sliding reset unit 4. Then, the filling unit 3 fills the honeycomb carrier 6 with the catalyst coating liquid through the conveying unit 7. After the filling is completed, the circulation conveying unit 2 moves the honeycomb carrier 6, and the sealing plate 52 slides along the sliding reset unit 4. Then, a new... When the honeycomb carrier 6 moves to the conveying unit 7, the lifting unit 8 drives the sealing plate 52 to be pulled out of the discharge hole 51, so that the catalyst coating liquid in the honeycomb carrier 6 flows out. Under the action of the sliding reset unit 4, the sealing plate 52 is reset to the discharge hole 51 of the new support plate 5, and the new honeycomb carrier 6 is filled with the catalyst coating liquid. This allows the catalyst coating liquid to flow into the metal honeycomb carrier 6 and flow out of the metal honeycomb carrier 6 in two separate processes, thereby improving the coating efficiency of the metal carrier.

[0042] Reference Figure 3 , Figure 4The discharge port 51 includes a first section 511 and a second section 512. The second section 512 is funnel-shaped. A grid 513 is provided in the first section 511 of the support plate 5. The grid 513 is fixedly connected to the hole wall of the first section 511. The honeycomb carrier 6 is inserted into the first section 511 and abuts against the grid 513. The grid 513 is composed of multiple intersecting round rods, so that the contact between the grid 513 and the honeycomb carrier 6 is a line contact, which can effectively prevent the grid 513 from blocking the channel of the honeycomb carrier 6 and facilitate the outflow of the catalyst coating liquid in the honeycomb carrier 6. The sealing plate 52 is frustoconical in shape. When the sealing plate 52 is inserted into the discharge port 51, the sealing plate 52 fits against the hole wall of the second section 512, improving the sealing effect of the sealing plate 52 on the discharge port 51. A sealing ring 514 is fixedly provided on the wall of the first hole section 511. When the honeycomb carrier 6 is inserted into the discharge hole 51, the sealing ring 514 abuts against the honeycomb carrier 6. On the one hand, it can improve the stability of the honeycomb carrier 6 on the support plate 5, and on the other hand, it can improve the sealing of the connection between the honeycomb carrier 6 and the support plate 5, effectively preventing the catalyst coating liquid from leaking from the honeycomb carrier 6 and the first hole section 511.

[0043] Reference Figure 1 In this embodiment, the filling unit 3 includes a storage tank 31, a delivery pump 32, and a delivery pipe 33. The storage tank 31 is mounted on the frame 1 and is used to store the catalyst coating liquid. The delivery pump 32 and the delivery pipe 33 are both fixedly mounted on the frame 1. In this embodiment, the delivery pump 32 is a centrifugal pump. The suction end of the delivery pump 32 is inserted into the storage tank 31 through a pipe to draw out the catalyst coating liquid from the storage tank 31. One end of the delivery pipe 33 is fixedly connected to the output end of the delivery pump 32. A distribution pipe 341 is fixedly mounted on the frame 1 along the vertical direction. The diameter of the distribution pipe 341 is larger than the diameter of the delivery pipe 33. The end of the delivery pipe 33 away from the delivery pump 32 is inserted into the top of the distribution pipe 341 and connected to the distribution pipe 341.

[0044] Reference Figure 5 , Figure 6 A feeding disc 342 is provided inside the feeding tube 341. The feeding disc 342 is placed horizontally inside the feeding tube 341. The edge of the feeding disc 342 is inserted into the tube wall of the feeding tube 341 and is rotatably connected to the feeding tube 341. The feeding disc 342 is provided with several evenly arranged feeding holes 343. The catalyst coating liquid can pass through the feeding holes 343 and enter the honeycomb carrier 6. A drive motor 344 is fixedly provided on the outer wall of the feeding tube 341. The output shaft of the drive motor 344 is inserted into the feeding tube 341. A drive gear 345 is coaxially fixed at one end of the output shaft of the drive motor 344 that is inserted into the feeding tube 341. A toothed ring 346 is coaxially fixed on the feeding disc 342. The toothed ring 346 is located at the edge of the feeding disc 342 and meshes with the drive gear 345.

[0045] The delivery pump 32 draws in the catalyst coating liquid from the storage tank 31 and delivers it to the distribution pipe 341 through the delivery pipe 33. Then, the drive motor 344 drives the drive gear 345 to rotate. The drive gear 345 drives the distribution disc 342 to rotate through the gear ring 346. The distribution disc 342 disperses the catalyst coating liquid flowing out of the delivery pipe 33, thereby making the catalyst coating liquid more evenly distributed in the distribution pipe 341.

[0046] Reference Figure 2 , Figure 7 and Figure 8 In this embodiment, the material conveying unit 7 includes a connecting pipe 71 and a rubber tube 72. The connecting pipe 71 is located below the material distribution pipe 341 and is coaxially arranged with the material distribution pipe 341. Two sets of linear drive mechanisms 73 are fixedly installed on the frame 1. In this embodiment, the linear drive mechanism 73 is a cylinder 771. In other embodiments, it can be a cylinder, a linear motor, etc. The two sets of linear drive mechanisms 73 are arranged opposite each other along the circumference of the connecting pipe 71. The connecting pipe 71 and the material distribution pipe 341 are connected by a corrugated pipe 74. The rubber tube 72 is fixedly installed at the outlet end of the connecting pipe 71. A tightening ring 75 is provided at the end of the rubber tube 72 away from the connecting pipe 71. An opening unit 76 is provided on the connecting pipe 71. The opening unit 76 is used to open the end of the rubber tube 72 so that the rubber tube 72 can be fitted onto the honeycomb carrier 6.

[0047] Reference Figure 7 , Figure 8 In this embodiment, the opening unit 76 includes a support ring 761 and a plurality of sliding rods 762. The support ring 761 is fixedly mounted on the connecting pipe 71 by a fixing rod 763 and is sleeved on the rubber tube. The plurality of sliding rods 762 are evenly arranged along the circumference of the rubber tube 72. Each sliding rod 762 passes through the support ring 761 and is slidably connected to the support ring 761. One end of the sliding rod 762 is fixedly connected to the tightening ring 75, and the other end is provided with a driving arm 764 arranged axially along the connecting pipe 71. The driving arm 764 is formed by bending the end of the sliding rod 762 away from the rubber tube 72 upward. The connecting pipe 71 is provided with a driving member 77 for driving the driving arm 764 away from the connecting pipe 71.

[0048] Reference Figure 7 , Figure 8In this embodiment, the driving component 77 includes a cylinder 771 and a driving ring 772. There are two cylinders 771, which are arranged opposite each other on the outer wall of the connecting pipe 71 along the circumference of the connecting pipe 71. The output shaft of each cylinder 771 is arranged downward. The driving ring 772 is slidably sleeved on the connecting pipe 71. The output shaft of each cylinder 771 is fixedly connected to the driving ring 772. The driving ring 772 is provided with a driving surface 773, which is arranged in a circle along the circumference of the driving ring 772. The distance from the driving surface 773 to the axis of the connecting pipe 71 gradually increases from the end of the driving ring 772 near the tightening ring 75 to the end away from the tightening ring 75. When the driving surface 773 contacts the driving arm 764, the driving arm 764 moves from the small end of the driving surface 773 to the large end and pulls the tightening ring 75 to open. When the tightening ring 75 is fully open, the driving arm 764 still abuts against the driving surface 773.

[0049] When filling the honeycomb carrier 6, the support plate 5 moves the honeycomb carrier 6 to below the rubber tube 72. Then, the linear drive mechanism 73 moves the connecting tube 71 downward. At the same time, the cylinder 771 extends and moves the drive ring 772 downward. The drive ring 772 moves the drive surface 773 downward. As the drive surface 773 moves downward, the drive arm 764 slides along the drive surface 773 and slides away from the rubber tube 72. The drive arm 764 pulls the tightening ring 75 open through the slide rod 762. Then, the linear drive mechanism 73 drives the end of the rubber tube 72 to fit on the top of the honeycomb carrier 6. Then, the drive cylinder 771 retracts, the drive ring 772 moves upward, and the drive surface 773 gradually releases the slide rod 762. The tightening ring 75 moves the slide rod 762 closer to the rubber tube 72 and tightens it on the honeycomb carrier 6, improving the sealing between the rubber tube 72 and the honeycomb carrier 6 and effectively preventing leakage of the catalyst coating liquid when filling the honeycomb carrier 6.

[0050] Then, the delivery pump 32 and the drive motor 344 are turned on. The catalyst coating liquid in the storage tank 31 of the delivery pump 32 is delivered to the distribution pipe 341 through the delivery pipe 33. Then, the drive motor 344 drives the distribution disc 342 to rotate through the meshing of the drive gear 345 and the gear ring 346. Then, the catalyst coating liquid flows into the honeycomb carrier 6 and fills it, thereby coating the honeycomb carrier 6 with the catalyst coating liquid.

[0051] Reference Figure 9 , Figure 10In this embodiment, the sliding reset unit 4 includes a slide rail 41 and a reset spring 42. The slide rail 41 is mounted on the lifting unit 8 and is arranged along the sliding direction of the support plate 5. A slider 43 is provided on the slide rail 41, and a sealing plate 52 is fixed on the slider 43. The reset spring 42 is mounted on the slide rail 41 and is fixedly connected to the slider 43. A limiting block 44 is fixedly provided on the slide rail 41. Initially, the reset spring 42 presses the slider 43 against the limiting block 44. At this time, the sealing plate 52 is aligned with the discharge hole 51 on the support plate 5. The sealing plate 52 slides with the support plate 5, causing the reset spring 42 to contract. The reset spring 42 can push the sealing plate 52 back to its original position and abut against the limiting block 44.

[0052] Reference Figure 9 , Figure 10 A collection tank 45 for collecting the catalyst coating liquid flowing out of the discharge hole 51 is fixed on the conveyor frame 21. The collection tank 45 is located at the opening of the sealing plate 52 and below the slide rail 41. The collection tank 45 is arranged along the sliding direction of the support plate 5. A return pipe 46 is connected to the side wall of the collection tank 45. The other end of the return pipe 46 is connected to the storage tank 31.

[0053] When a honeycomb carrier 6 is filled with catalyst coating liquid, the conveyor belt mechanism 22 drives the support plate 5 to slide. At this time, since the sealing plate 52 is inserted into the discharge hole, the support plate 5 drives the sealing plate 52 and the slider 43 to slide along the slide rail 41. At this time, the return spring 42 contracts. During this process, the catalyst coating liquid is always present in the honeycomb carrier 6, so that the catalyst coating liquid is more fully coated on the honeycomb carrier 6. After the honeycomb carrier 6 has moved a certain distance, the conveyor belt mechanism 22 stops rotating, and the next support plate 5 drives the new honeycomb carrier 6 to move to below the rubber tube 72. At this time, the lifting unit 8 drives the slide rail 41 to move down, the slide rail 41 drives the sealing plate 52 to move down, and pulls out the discharge hole 51. The catalyst coating liquid in the honeycomb carrier 6 flows out and falls into the collection tank 45. The collection tank 45 returns the collected catalyst coating liquid to the storage tank 31 through the return pipe 46, reducing the waste of catalyst coating liquid and enabling the catalyst coating liquid to be recycled.

[0054] When the sealing plate 52 is pulled out of the discharge hole 51, the return spring 42 extends and pushes the slider 43 back to the limit block 44. Then the lifting unit 8 drives the sealing plate 52 to move upward to seal the discharge hole 51 on the new support plate 5, and then fills the new honeycomb carrier 6. The above operation process is repeated continuously, so that the filling and discharge of the two honeycomb carriers 6 are carried out in two processes at the same time, thereby improving the efficiency of catalyst coating of the honeycomb carrier 6.

[0055] The implementation principle of the automotive exhaust purification catalyst coating device in this application embodiment is as follows: When coating the catalyst coating liquid onto the honeycomb carrier 6, the honeycomb carrier 6 is first placed one by one on the support plate 5. Then, the support plate 5 with the honeycomb carrier 6 is transported one by one to the bottom of the rubber tube 72 by the conveyor belt mechanism 22. Then, the lifting unit 8 rises and pushes the sealing plate 52 to seal the discharge hole 51. Then, the rubber tube 72 is tightened on the honeycomb carrier 6. The delivery pump 32 pours the catalyst coating liquid from the storage tank 31 into the honeycomb carrier 6. After the filling is completed, the conveyor belt mechanism 22 drives the honeycomb carrier 6 to move, and the sealing plate... 52 slides along the slide rail 41 and compresses the return spring 42 to retract. Then, when the new honeycomb carrier 6 moves below the rubber tube 72, the lifting unit 8 drives the sealing plate 52 to pull out the discharge hole 51, so that the catalyst coating liquid in the honeycomb carrier 6 flows out. Under the action of the return spring 42, the sealing plate 52 returns to the discharge hole 51 of the new support plate 5, and fills the new honeycomb carrier 6. This allows the catalyst coating liquid to flow out of the previous honeycomb carrier 6 and fill the next honeycomb carrier 6, thus separating the flow of catalyst coating liquid into the metal honeycomb carrier 6 and the flow out of the metal honeycomb carrier 6 into two processes, improving the coating efficiency of the metal carrier.

[0056] 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 coating device for a catalyst used in automotive exhaust purification, characterized in that: It includes a circulating conveying unit (2) and a filling unit (3) set on a frame (1). The circulating conveying unit (2) is provided with several support plates (5) for placing the honeycomb carriers (6). The honeycomb carriers (6) are placed vertically on the support plates (5). The filling unit (3) fills the honeycomb carriers (6) with material through the conveying unit (7). The circulating conveying unit (2) can transport the honeycomb carriers (6) one by one to the conveying unit (7). The support plate (5) is provided with a discharge hole (51) connected to the honeycomb carrier (6). The frame (1) is provided with a lifting unit (8). The lifting unit (8) is provided with a sliding reset unit (4). The sliding reset unit (4) is provided with a sealing plate (52) for restricting the catalyst coating material in the honeycomb carrier (6) from flowing out of the discharge hole (51). The lifting unit (8) can drive the sealing plate (52) to insert or slide out of the discharge hole (51), so that the discharge hole (51) is closed or opened. The sealing plate (52) can move and reset along the sliding reset unit (4). The sliding reset unit (4) includes a slide rail (41) and a reset spring (42). The slide rail (41) is set on the lifting unit (8) and is set along the sliding direction of the support plate (5). A slider (43) is provided on the slide rail (41). The sealing plate (52) is fixed on the slider (43). The reset spring (42) is set on the slide rail (41) and is fixedly connected to the slider (43). The sealing plate (52) slides with the support plate (5), causing the reset spring (42) to contract. The reset spring (42) can push the sealing plate (52) back to its original position.

2. The automotive exhaust gas purification catalyst coating device according to claim 1, characterized in that: The support plate (5) is provided with a grid (513), the grid (513) is laid flat in the discharge hole (51), the honeycomb carrier (6) is inserted into the discharge hole (51) and placed on the grid (513), and the sealing plate (52) is inserted into the discharge hole (51) and abuts against the hole wall of the discharge hole (51).

3. The automotive exhaust gas purification catalyst coating device according to claim 2, characterized in that: A sealing ring (514) is provided on the side wall of the discharge hole (51), and the sealing ring (514) abuts against the honeycomb carrier (6).

4. The automotive exhaust gas purification catalyst coating device according to claim 1, characterized in that: The filling unit (3) includes a storage tank (31), a delivery pump (32), and a delivery pipe (33). The storage tank (31) is mounted on the frame (1) and is used to store the catalyst coating liquid. The delivery pump (32) and the delivery pipe (33) are both mounted on the frame (1). One end of the delivery pipe (33) is fixedly connected to the delivery pump (32), and the other end extends above the honeycomb carrier (6) and faces the honeycomb carrier (6). One end of the delivery pump (32) is inserted into the storage tank (31).

5. The automotive exhaust gas purification catalyst coating device according to claim 4, characterized in that: A feeding pipe (341) is fixedly provided at the outlet end of the conveying pipe (33). A feeding disc (342) is provided inside the feeding pipe (341). The feeding disc (342) is horizontally placed inside the feeding pipe (341) and rotates with the feeding pipe (341). The feeding disc (342) is provided with a plurality of evenly arranged feeding holes (343). The catalyst coating liquid can pass through the feeding holes (343) and enter the honeycomb carrier (6). A drive motor (344) is fixedly provided on the outer wall of the feeding pipe (341). The output shaft of the drive motor (344) is inserted into the feeding pipe (341) and a drive gear (345) is fixedly provided on the same axis. A gear ring (346) is fixedly provided on the feeding disc (342) on the same axis. The gear ring (346) meshes with the drive gear (345).

6. The automotive exhaust gas purification catalyst coating device according to claim 5, characterized in that: The material conveying unit (7) includes a connecting pipe (71) and a rubber tube (72). The connecting pipe (71) is slidably mounted on the frame (1) in a vertical direction. The connecting pipe (71) is connected to the material distribution pipe (341) through a corrugated pipe (74). The rubber tube (72) is located at the outlet end of the connecting pipe (71). The rubber tube (72) can be fitted onto the upper end of the honeycomb carrier (6) and pressed tightly. The connecting pipe (71) is provided with an opening unit (76). The opening unit (76) is used to open the port of the rubber tube (72) so that the rubber tube (72) can be fitted onto the honeycomb carrier (6). The frame (1) is provided with a linear drive mechanism (73). The linear drive mechanism (73) can drive the connecting pipe (71) to slide so that the honeycomb carrier (6) can be inserted into or slid out of the port of the rubber tube (72).

7. The automotive exhaust gas purification catalyst coating device according to claim 6, characterized in that: A tightening ring (75) is fixedly provided on the rubber tube (72); The opening unit (76) includes a support ring (761) and a plurality of slide rods (762). The support ring (761) is fixedly mounted on the connecting pipe (71) and sleeved on the rubber tube. The plurality of slide rods (762) are evenly arranged along the circumference of the rubber tube (72) and are slidably connected to the slide rods (762). One end of the slide rod (762) is fixedly connected to the tightening ring (75), and the other end is provided with a drive arm (764) arranged axially along the connecting pipe (71). The connecting pipe (71) is provided with a drive member (77) for driving the drive arm (764) away from the rubber tube (72).

8. The automotive exhaust gas purification catalyst coating device according to claim 7, characterized in that: The driving component (77) includes a cylinder (771) and a driving ring (772). The cylinder (771) is fixedly mounted on the connecting pipe (71), and the driving ring (772) is slidably mounted on the connecting pipe (71). The output shaft of the cylinder (771) is fixedly connected to the driving ring (772) and can drive the driving ring (772) to slide. The driving ring (772) is provided with a driving surface (773), and the driving arm (764) can slide along the driving surface (773) so that the driving arm (764) slides away from the rubber tube (72).

9. The automotive exhaust gas purification catalyst coating device according to claim 3, characterized in that: The frame (1) is provided with a collection tank (45) for collecting the catalyst coating liquid flowing out of the discharge hole (51).

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