Waste gas purification catalyst sample coating device

Abstract

The utility model discloses a small sample coating device for a waste gas purification catalyst, and relates to the field of catalysts. The waste gas purification catalyst sample coating device comprises a workbench, a conversion mechanism, a power propulsion mechanism, a slurry storage mechanism and a sample coating mechanism. The switching mechanism is rotatably connected with the workbench, and the power propelling mechanism and the slurry storage mechanism are both arranged on the switching mechanism. The power propelling mechanism comprises a driving motor, and a slurry piston is arranged at the tail end of a driving shaft of the driving motor. The slurry storage mechanism comprises a storage tank, an inner cavity is formed in the storage tank, and openings are formed in the two ends of the storage tank. The slurry piston penetrates through a bottom opening of the storage tank and is arranged in an inner cavity of the storage tank, and an opening in the other end of the storage tank is connected with the small sample coating mechanism. Through the arrangement, the device can be used for coating in a vertical state and a transverse state, the condition of coating a catalyst carrier in flow line production is simulated, meanwhile, the device realizes that the catalyst carrier is coated by using less slurry, the waste gas purification catalyst is used for laboratory-level test and research, and the research and development cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of catalysts, in particular to a small sample coating device for exhaust gas purification catalysts. Background Art

[0002] Exhaust gas purification technology is to coat the slurry containing the active components of the catalyst on the catalyst carrier, so that the catalyst can convert harmful substances in the exhaust gas into harmless substances. This technology is widely used in the fields of automobile exhaust purification and industrial waste gas treatment. However, since the active components of the exhaust gas purification catalyst are precious metals and the volume of a single exhaust gas purification catalyst is large, a large amount of precious metals, catalyst carriers and coating materials are wasted in the process of developing the exhaust gas purification catalyst, and the cost is very high.

[0003] Therefore, there is an urgent need for a small, flexible device that can perform laboratory-level testing and research on catalysts to verify the performance and effects of the catalysts and thus reduce R&D costs. Utility Model Content

[0004] The utility model is provided with a small sample coating device for exhaust gas purification catalyst, which is provided with a workbench, a conversion mechanism, a power propulsion mechanism, a slurry storage mechanism and a small sample coating mechanism. The conversion mechanism can switch the coating device between a vertical state and a horizontal state, and the power propulsion mechanism can coat the slurry in the slurry storage mechanism onto the small sample coating mechanism. Through the above-mentioned settings, the coating device realizes the use of the exhaust gas purification catalyst for laboratory-level testing and research, and reduces the R&D cost.

[0005] The utility model of the small sample coating device for exhaust gas purification catalyst comprises a workbench, a conversion mechanism, a power propulsion mechanism, a slurry storage mechanism and a small sample coating mechanism. The conversion mechanism is rotatably connected to the workbench, and the power propulsion mechanism and the slurry storage mechanism are both arranged on the conversion mechanism. The power propulsion mechanism comprises a driving motor, and a slurry piston is arranged at the end of the driving shaft of the driving motor. The slurry storage mechanism comprises a storage tank, and the storage tank is provided with an inner cavity and openings at both ends. The slurry piston passes through the bottom opening of the storage tank and is arranged in the inner cavity of the storage tank, and the other end opening of the storage tank is connected to the small sample coating mechanism.

[0006] In a specific embodiment, the conversion mechanism includes a base, a conversion block and a conversion plate. The base is arranged on a workbench, one end of the conversion block is rotatably connected to the base, and the other end is connected to the conversion plate. The power propulsion mechanism and the slurry storage mechanism are both arranged on the conversion plate.

[0007] In a specific embodiment, the power propulsion mechanism further includes a first support plate and a second support plate. The first support plate and the second support plate are both connected to the conversion plate, and the first support plate and the second support plate are arranged in parallel. The bottom of the driving motor is connected to the first support plate; the second support plate is provided with a second support plate opening, and the driving shaft of the driving motor passes through the second support plate opening and is connected to the slurry piston.

[0008] In a specific embodiment, the slurry storage mechanism further includes a third support plate and a fourth support plate. The third support plate and the fourth support plate are both connected to the conversion plate, and the third support plate and the fourth support plate are arranged in parallel. The bottom of the storage tank is connected to the third support plate, and a third support plate opening is provided on the third support plate. The slurry piston passes through the third support plate opening and is arranged in the inner cavity of the storage tank. A fourth support plate opening is provided on the fourth support plate, and the storage tank is connected to the small sample coating mechanism after passing through the fourth support plate opening.

[0009] In a specific embodiment, the small sample coating mechanism includes a small sample carrier tool and a small sample carrier. The small sample carrier tool includes an adapter and a fixed module, wherein an inner cavity is provided in the adapter and a sample slot is provided in the fixed module; one end of the adapter is connected to the top opening of the storage tank, and the inner cavity of the adapter is connected to the inner cavity of the storage tank; the other end of the adapter is connected to the fixed module, and the inner cavity of the adapter is connected to the sample slot. A carrier bracket is provided in the inner cavity of the adapter, and the small sample carrier is arranged on the carrier bracket and the small sample carrier is located in the inner cavity of the adapter and the sample slot.

[0010] In a specific embodiment, an airbag cavity is provided in the fixing module, an annular airbag is provided in the airbag cavity, and the airbag cavity is connected to the sample placement groove; when the annular airbag is inflated, the annular airbag supports the small sample carrier outside the small sample carrier.

[0011] In a specific embodiment, a first adapter flange is provided on the adapter, and a second adapter flange is provided on the top of the storage tank. The first adapter flange and the second adapter flange are detachably connected, and a sealing gasket is provided between the first adapter flange and the second adapter flange. When the first adapter flange, the sealing gasket and the second adapter flange are connected, a clamp is further provided on the outside of the first adapter flange and the second adapter flange.

[0012] In a feasible implementation, it also includes an elbow, one end of which is connected to the top of the material storage tank and communicates with the inner cavity of the material storage tank, and the other end is connected to the small sample carrier tooling.

[0013] In one possible embodiment, the cross-section of the sample carrier tooling is circular, oval or square.

[0014] In a specific embodiment, the small sample carrier is a honeycomb catalyst carrier.

[0015] In a specific embodiment, it further comprises a numerical control unit. The annular airbag is externally connected to a compressor, and the numerical control unit is electrically connected to the drive motor and the compressor.

[0016] Beneficial Effects

[0017] The utility model includes a workbench, a conversion mechanism, a power propulsion mechanism, a slurry storage mechanism and a small sample coating mechanism. The conversion mechanism is rotatably connected to the workbench, and the power propulsion mechanism and the slurry storage mechanism are both arranged on the conversion mechanism. The power propulsion mechanism includes a driving motor, and a slurry piston is provided at the end of the driving shaft of the driving motor. The slurry storage mechanism includes a storage tank, and the storage tank is provided with an inner cavity and openings at both ends. The slurry piston passes through the bottom opening of the storage tank and is arranged in the inner cavity of the storage tank, and the other end opening of the storage tank is connected to the small sample coating mechanism. Through the above-mentioned arrangement, the device can be coated in a vertical state and a horizontal state, simulating the situation of coating the catalyst carrier in assembly line production. At the same time, the device realizes the use of less slurry to coat the catalyst carrier, and realizes the use of exhaust gas purification catalysts for laboratory-level testing and research, reducing R&D costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model in a vertical state.

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model in a horizontal state.

[0020] Figure 3 It is a cross-sectional view of the small sample carrier tooling of the utility model.

[0021] Figure 4 It is a top view of the small sample carrier tooling of the utility model.

[0022] Figure 5 This is a cross-sectional view of the storage tank, adapter, sealing gasket and clamp of the utility model when they are connected.

[0023] Reference numerals

[0024] Workbench 1

[0025] Conversion mechanism 2

[0026] Base 21

[0027] Conversion block 22

[0028] Converter board 23

[0029] Power propulsion mechanism 3

[0030] Drive motor 31

[0031] Slurry piston 32

[0032] First support plate 33

[0033] Second support plate 34

[0034] Slurry storage mechanism 4

[0035] Storage tank 41

[0036] The third support plate 42

[0037] Fourth support plate 43

[0038] Sample coating mechanism 5

[0039] Sample carrier tooling 51

[0040] Sample carrier 52

[0041] Adapter 53

[0042] Carrier support 531

[0043] Fixed module 54

[0044] Lofting slot 541

[0045] Airbag cavity 542

[0046] Ring airbag 543

[0047] Sealing gasket 55

[0048] Clamp 6

[0049] CNC unit 7

[0050] Elbow 8 DETAILED DESCRIPTION

[0051] 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. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "left side", "right side", "upper side", "lower side", "above", "below", "top", "bottom", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0054] Embodiment 1

[0055] This embodiment provides a small sample coating device for exhaust gas purification catalyst, see Figure 1 and Figure 2 The exhaust gas purification catalyst sample coating device includes a workbench 1, a conversion mechanism 2, a power propulsion mechanism 3, a slurry storage mechanism 4 and a sample coating mechanism 5. The conversion mechanism 2 is rotatably connected to the workbench 1, and the power propulsion mechanism 3 and the slurry storage mechanism 4 are both arranged on the conversion mechanism 2. It is worth noting that in the actual production line, there are generally two modes for coating the carrier, one is a vertical mode and the other is a horizontal mode, which just corresponds to the two states of the coating device, namely Figure 1 The vertical state and Figure 2 The conversion mechanism 2 can switch the sample coating device back and forth between the vertical state and the horizontal state, so that the device can simulate two coating modes, more realistically simulating the slurry flow and coating process in the coating state in the production line. Figure 1 and Figure 2 The power propulsion mechanism 3 includes a driving motor 31, and a slurry piston 32 is provided at the end of the driving shaft of the driving motor 31. The slurry storage mechanism 4 includes a storage tank 41, and the storage tank 41 is provided with an inner cavity and openings at both ends. The slurry piston 32 passes through the bottom opening of the storage tank 41 and is arranged in the inner cavity of the storage tank 41. The other end opening of the storage tank 41 is connected to the sample coating mechanism 5. It is worth noting that the types of the driving motor 31 include but are not limited to: stepper motors, DC reduction motors and servo motors.

[0056] In one specific embodiment, see Figure 1 and Figure 2 The conversion mechanism 2 includes a base 21, a conversion block 22 and a conversion plate 23. The base 21 is arranged on the workbench 1, one end of the conversion block 22 is rotatably connected to the base 21, and the other end is connected to the conversion plate 23. The power propulsion mechanism 3 and the slurry storage mechanism 4 are both arranged on the conversion plate 23. Figure 1 and Figure 2 The conversion block 22 is connected to the base 21 through a movable shaft. When the state of the coating device is switched, the rotating block 22 is rotated around the movable shaft. When the coating device is already in a vertical state or a horizontal state, the coating device can be fixed in the vertical state or the horizontal state by locking the movable shaft. It is worth noting that the above-mentioned "rotating around the movable shaft" and "locking the movable shaft" are both existing technologies, so they are not described in detail.

[0057] In one specific embodiment, see Figure 1 and Figure 2 The power propulsion mechanism 3 also includes a first support plate 33 and a second support plate 34. The first support plate 33 and the second support plate 34 are both connected to the conversion plate 23, and the first support plate 33 and the second support plate 34 are arranged in parallel. In addition, the first support plate 33 and the second support plate 34 are arranged perpendicular to the conversion plate 23. Figure 1 and Figure 2 , the bottom of the driving motor 31 is connected to the first support plate 33, and the driving motor 31 is located between the first support plate 33 and the second support plate 34. At the same time, the second support plate 34 is provided with a second support plate 34 opening, and the driving shaft of the driving motor 31 passes through the second support plate 34 opening and is connected to the slurry piston 32. It is worth noting that the power source in the power propulsion mechanism 3 can not only adopt the driving motor 31 as described in this embodiment, but also can be driven pneumatically or manually. The methods of "pneumatic drive" or "manual drive" are both conventional existing technologies, so they will not be expanded here.

[0058] In one specific embodiment, see Figure 1 and Figure 2 The slurry storage mechanism 4 further includes a third support plate 42 and a fourth support plate 43. The third support plate 42 and the fourth support plate 43 are both connected to the conversion plate 23, and the third support plate 42 and the fourth support plate 43 are arranged in parallel. In addition, the third support plate 42 and the fourth support plate 43 are arranged perpendicular to the conversion plate 23. Figure 1 and Figure 2, the bottom of the storage tank 41 is connected to the third support plate 42, and the storage tank 41 is located between the third support plate 42 and the fourth support plate 43. At the same time, the third support plate 42 is provided with a third support plate 42 opening, and the drive shaft of the drive motor 31 passes through the third support plate opening 42 to connect with the slurry piston 32, and the slurry piston 32 is arranged in the inner cavity of the storage tank 41. In addition, the fourth support plate 43 is provided with a fourth support plate 43 opening, and the storage tank 41 is connected to the sample coating mechanism 5 after passing through the fourth support plate 43 opening. It is worth noting that the size of the fourth support plate 43 opening matches the storage tank 41 to ensure that the storage tank 41 is fixed. In a preferred embodiment, the first support plate 33, the second support plate 34, the third support plate 42 and the fourth support plate 43 are all arranged in parallel, and are all arranged perpendicular to the conversion plate 23. It is worth noting that, through the coordinated use of the drive motor 31, the slurry piston 32 and the storage tank 41, the coating device can use less slurry to coat the catalyst carrier, thereby realizing the use of the exhaust gas purification catalyst for laboratory-level testing and research, and reducing R&D costs.

[0059] In one specific embodiment, see Figure 3 , the small sample coating mechanism 5 includes a small sample carrier tooling 51 and a small sample carrier 52. The small sample carrier tooling 51 includes an adapter 53 and a fixed module 54, an inner cavity is provided in the adapter 53 and a sample groove 541 is provided in the fixed module 54, and the inner cavity of the adapter 53 is communicated with the sample groove 541. One end of the adapter 53 is connected to the top of the storage tank 41, and the other end of the adapter 53 is connected to the fixed module 54, and at the same time, the inner cavity of the adapter 53 is communicated with the inner cavity of the storage tank 41. In addition, a carrier bracket 531 is provided in the inner cavity of the adapter 53. When in use, the small sample carrier 52 is arranged on the carrier bracket 531, and the small sample carrier 52 should be located in the inner cavity of the adapter 53 and the sample groove 541.

[0060] In one specific embodiment, see Figure 3 and Figure 4 , an airbag cavity 542 is provided in the fixing module 54, an annular airbag 543 is provided in the airbag cavity 542, and the airbag cavity 542 is connected with the sample groove 541. When the annular airbag 543 is inflated, the annular airbag 543 resists the small sample carrier 52 outside the small sample carrier 52. It is worth noting that the airbag cavity 542 and the annular airbag 543 are in the same annular shape, and the space size of the airbag cavity 542 should be slightly smaller than the annular airbag 543 after inflation, so that the annular airbag 543 can expand into the space where the sample groove 541 is located after inflation, so as to squeeze the small sample carrier 52 placed in the sample groove 541, and ensure that the small sample carrier 52 can be fixed in the sample groove 541.

[0061] In one specific embodiment, continue to refer to Figure 5, a first adapter flange is provided on the adapter 53, and a second adapter flange is provided on the top of the storage tank 41. The first adapter flange and the second adapter flange are detachably connected, and a sealing gasket 55 is provided between the first adapter flange and the second adapter flange. Figure 5 , the sealing gasket 55 is provided with a first protrusion and a second protrusion. At the same time, the first adapter flange is provided with a first groove matching the first protrusion, and the second adapter flange is provided with a second groove matching the second protrusion. When in use, the first protrusion on the sealing gasket 55 is inserted into the first groove of the first adapter flange, and then the second protrusion on the sealing gasket 55 is inserted into the second groove of the second adapter flange. At this time, the sealing gasket 55 should be set between the first adapter flange and the second adapter flange. More specifically, continue to refer to Figure 5 When the first adapter flange, the sealing gasket 55 and the second adapter flange are connected, a clamp 6 is further provided on the outside of the first adapter flange and the second adapter flange. The clamp 6 squeezes the first adapter flange, the sealing gasket 55 and the second adapter flange and fixes the three together. It is worth noting that the clamp 6 can be a quick connector to reduce the complexity of the installation and removal process and at the same time increase the speed of the installation and removal process.

[0062] In one specific embodiment, see Figure 2 , also includes an elbow 8. One end of the elbow 8 is connected to the top of the storage tank 41 and is communicated with the inner cavity of the storage tank 41, and the other end is connected to the small sample carrier tooling 51. It is worth noting that the catalyst should enter the small sample carrier tooling 51 from below. Therefore, no matter whether the coating device is in a horizontal or vertical position, the small sample carrier tooling 51 must remain in a vertical state so that the catalyst can enter the small sample carrier tooling 51 from below. Based on this, when the coating device is in a horizontal position, the elbow 8 needs to be assembled to ensure that the small sample carrier tooling 51 remains in a vertical state.

[0063] In one specific embodiment, see Figure 1 , and also includes a numerical control unit 7, which includes a conventional host computer and PLC. Specifically, the annular airbag 543 is externally connected to a compressor, and the PLC is electrically connected to the drive motor 31 and the compressor respectively. When in use, the host computer issues instructions to the PLC, and the PLC converts the digital signal into an analog electrical signal and controls the drive motor 31 and the compressor. It is worth noting that the control of the drive motor 31 includes but is not limited to: the propulsion speed, propulsion time and propulsion amount of the drive motor 31; the control of the compressor includes but is not limited to: the compression amount and compression time of the compressor. In addition, various conventional sensors are provided in the numerical control unit 7 for receiving various types of data, so as to monitor the status of each link in the coating process. Conventional sensors include but are not limited to: pressure sensors, infrared sensors or encoders, etc.

[0064] In another embodiment, the cross section of the small sample carrier tooling 51 is circular, oval or square. In addition, the small sample carrier 52 is generally honeycomb-shaped, specifically a honeycomb catalyst carrier.

[0065] Here, a method for using the small sample coating device for exhaust gas purification catalyst of the utility model is also provided, and the specific method of use is as follows:

[0066] 1) The coating device is adjusted to a vertical state or a horizontal state through the conversion mechanism 2.

[0067] 2) If the coating device is in a vertical state, align the adapter 53 with the storage tank 41, and fix the first adapter flange, the sealing gasket 55 and the second adapter flange through the clamp 6; if the coating device is in a horizontal state, connect one end of the elbow 8 to the top of the storage tank 41, and connect the other end to the adapter 53 to ensure that the sample carrier tooling 51 is in a vertical state.

[0068] 3) Place the small sample carrier 52 on the carrier support 531 in the small sample carrier tooling 51. At this time, the small sample carrier 52 should be located in the inner cavity of the adapter 53 and the sample placement groove 541.

[0069] 4) The numerical control unit 7 issues a command and the compressor starts to work, thereby causing the annular airbag 543 to gradually expand and squeeze in the direction of the sample slot 541 , thereby fixing the small sample carrier 52 in the sample slot 541 .

[0070] 5) The numerical control unit 7 continues to issue instructions, and the drive motor 31 starts to work, so that the slurry piston 32 moves upward, and at the same time, the slurry piston 32 pushes the slurry in the storage tank 41 to move upward. The slurry is pushed out from the top opening of the storage tank 41, enters the sample groove 541, and is finally coated on the small sample carrier 52.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust gas purification catalyst sample coating device, characterized in that: It comprises a workbench (1), a conversion mechanism (2), a power propulsion mechanism (3), a slurry storage mechanism (4) and a sample coating mechanism (5); The conversion mechanism (2) is rotatably connected to the workbench (1), and the power propulsion mechanism (3) and the slurry storage mechanism (4) are both arranged on the conversion mechanism (2); The power propulsion mechanism (3) includes a driving motor (31), and a slurry piston (32) is provided at the end of the driving shaft of the driving motor (31); the slurry storage mechanism (4) includes a storage tank (41), and the storage tank (41) is provided with an inner cavity and openings at both ends; the slurry piston (32) passes through the bottom opening of the storage tank (41) and is arranged in the inner cavity of the storage tank (41), and the other end opening of the storage tank (41) is connected to the small sample coating mechanism (5).

2. The sample coating device according to claim 1, characterized in that: The conversion mechanism (2) comprises a base (21), a conversion block (22) and a conversion plate (23); the base (21) is arranged on the workbench (1); one end of the conversion block (22) is rotatably connected to the base (21), and the other end is connected to the conversion plate (23); The power propulsion mechanism (3) and the slurry storage mechanism (4) are both arranged on the conversion plate (23).

3. The exhaust gas purification catalyst sample coating device according to claim 2, characterized in that: The power propulsion mechanism (3) further comprises a first support plate (33) and a second support plate (34); The first support plate (33) and the second support plate (34) are both connected to the conversion plate (23), and the first support plate (33) and the second support plate (34) are arranged in parallel; The bottom of the driving motor (31) is connected to the first support plate (33); the second support plate (34) is provided with a second support plate opening, and the driving shaft of the driving motor (31) passes through the second support plate (34) opening and is connected to the slurry piston (32).

4. The exhaust gas purification catalyst sample coating device according to claim 2, characterized in that: The slurry storage mechanism (4) further comprises a third support plate (42) and a fourth support plate (43); The third support plate (42) and the fourth support plate (43) are both connected to the conversion plate (23), and the third support plate (42) and the fourth support plate (43) are arranged in parallel; The bottom of the material storage tank (41) is connected to the third support plate (42), the third support plate (42) is provided with a third support plate (42) opening, and the slurry piston (32) passes through the third support plate (42) opening and is arranged in the inner cavity of the material storage tank (41); The fourth support plate (43) is provided with a fourth support plate (43) opening, and the storage tank (41) is connected to the small sample coating mechanism (5) after passing through the fourth support plate (43) opening.

5. The sample coating device according to claim 3, characterized in that: The small sample coating mechanism (5) comprises a small sample carrier tool (51) and a small sample carrier (52); The small sample carrier tooling (51) comprises an adapter (53) and a fixing module (54), wherein an inner cavity is provided in the adapter (53) and a sample lofting groove (541) is provided in the fixing module (54); one end of the adapter (53) is connected to the top opening of the material storage tank (41), and the inner cavity of the adapter (53) is in communication with the inner cavity of the material storage tank (41); the other end of the adapter (53) is connected to the fixing module (54), and the inner cavity of the adapter (53) is in communication with the sample lofting groove (541); A carrier support (531) is provided in the inner cavity of the adapter (53), the small sample carrier (52) is provided on the carrier support (531), and the small sample carrier (52) is located in the inner cavity of the adapter (53) and in the sample placement groove (541).

6. The sample coating device according to claim 5, characterized in that: The fixing module (54) is provided with an airbag cavity (542), and an annular airbag (543) is provided in the airbag cavity (542). The airbag cavity (542) is connected with the sample placement groove (541); when the annular airbag (543) is inflated, the annular airbag (543) abuts against the small sample carrier (52) outside the small sample carrier (52).

7. The exhaust gas purification catalyst sample coating device according to claim 5 or 6, characterized in that: The adapter (53) is provided with a first adapter flange, and the top of the storage tank (41) is provided with a second adapter flange; The first adapter flange and the second adapter flange are detachably connected, and a sealing gasket (55) is provided between the first adapter flange and the second adapter flange; When the first adapter flange, the sealing gasket (55) and the second adapter flange are connected, clamps (6) are further provided on the outside of the first adapter flange and the second adapter flange.

8. The exhaust gas purification catalyst sample coating device according to claim 5, characterized in that: It also includes an elbow (8), one end of which is connected to the top of the storage tank (41) and communicates with the inner cavity of the storage tank (41); and the other end is connected to the small sample carrier tooling (51).

9. The exhaust gas purification catalyst sample coating device according to claim 5 or 6, characterized in that: The cross-section of the small sample carrier tooling (51) is circular, elliptical or square; and / or the small sample carrier (52) is a honeycomb catalyst carrier.

10. The exhaust gas purification catalyst sample coating device according to claim 6, characterized in that: It also includes a numerical control unit (7); the annular airbag (543) is externally connected to a compressor, and the numerical control unit (7) is electrically connected to the drive motor (31) and the compressor.

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