Slurry coating device

Abstract

The utility model provides a slurry coating device. The slurry coating device comprises a carrier input unit, a rotary coating unit, a slurry pool and a carrier output unit, the rotary coating unit comprises a rotating body and a plurality of carrier fixing pieces arranged around the axis of the rotating body at intervals; through the rotation of the rotating body, a single carrier fixing piece in the plurality of carrier fixing pieces can reach a preset loading position of the carrier input unit, and a carrier conveyed by the carrier input unit is loaded to the carrier fixing piece; along with the continuous rotation of the rotating body, the carrier fixing piece enters the slurry pool, so that the slurry in the slurry pool is coated on the carrier; afterwards, the rotating body further rotates to drive the carrier fixing piece to leave the slurry pool and finally reach the preset unloading position, and the carrier is separated from the carrier fixing piece and enters the carrier output unit. Therefore, the catalyst carrier can be coated with high quality.

Description

Technical Field

[0001] This application relates to a slurry coating apparatus capable of coating catalyst supports with high quality. Background Technology

[0002] The control of exhaust emissions from general machinery is an important issue in environmental protection. Three-way catalyst technology, based on platinum (Pt), palladium (Pd), and rhodium (Rh), is widely used due to its efficient conversion of pollutants such as CO, HC, and NOx. This catalyst converts harmful gases into CO2, H2O, and N2 through redox reactions on the surface of precious metals, achieving relatively ideal conversion efficiency.

[0003] However, conventional general-purpose mechanical catalyst supports are manufactured using a wire extrusion molding process. In actual production, the slurry coating amount for a single catalyst is relatively small, only 0.8g-1.6g. Manual coating results in poor slurry wettability, easily leading to uneven coating thickness, localized accumulation, or missed coating, resulting in high dispersion of active components. Manual coating relies on operator experience, and the accuracy of matching parameters such as slurry viscosity and coating speed is low, causing performance fluctuations between batches of products. This makes it difficult to meet the stringent emission standards for catalysts and also introduces higher additional costs.

[0004] Therefore, in existing technologies, how to coat catalyst supports with high quality has become a technical challenge. Utility Model Content

[0005] The purpose of this application is to provide a slurry coating apparatus capable of high-quality coating of catalyst supports. To achieve the above objective, one aspect of this application is a slurry coating apparatus comprising a carrier input unit, a rotary coating unit, a slurry tank, and a carrier output unit. The carrier input unit is used to transport a carrier. The rotary coating unit includes a rotating body and a plurality of carrier fixing members spaced apart around the axis of the rotating body. The axis of the rotating body is perpendicular to the feeding direction of the carrier input unit. As the rotating body rotates, a single carrier fixing member among the plurality of carrier fixing members can reach a predetermined loading position of the carrier input unit, and the carrier transported by the carrier input unit is loaded onto the carrier fixing member. As the rotating body rotates further, the carrier fixing member enters the slurry tank, and the slurry in the slurry tank coats the carrier loaded on the carrier fixing member. As the rotating body rotates further, the carrier fixing member is driven away from the slurry tank and reaches a predetermined unloading position, whereby the carrier detaches from the carrier fixing member and enters the carrier output unit.

[0006] In a preferred embodiment, each of the plurality of carrier fasteners is connected to the rotating body via a telescopic rod.

[0007] In a preferred embodiment, each of the plurality of carrier fixing members is rotatable around the telescopic rod and is provided with at least one loading mechanism; when a single carrier fixing member reaches a predetermined loading position, the rotation of the carrier fixing member causes each of the at least one loading mechanism to load the carrier.

[0008] In a preferred embodiment, each of the at least one loading mechanism is a clamping mechanism consisting of a main clamping net and a secondary clamping net arranged opposite to each other; when loading the carrier, the main clamping net opens, the carrier input unit conveys the carrier to the main clamping net, and then the main clamping net closes; when unloading the carrier, the secondary clamping net opens, the carrier disengages from the loading mechanism, and then the secondary clamping net closes.

[0009] In a preferred embodiment, the slurry coating apparatus further includes a drying unit and a calcination unit; as the rotating body rotates, each of the plurality of carrier fixing members leaves the slurry pool and enters the drying unit and the calcination unit in sequence, so that the carrier loaded thereon undergoes drying and calcination operations in sequence.

[0010] In a preferred embodiment, the dimensions of the drying unit and the calcining unit are respectively set to correspond to the preset residence time of the carrier in the drying unit and the calcining unit.

[0011] In a preferred embodiment, a draining unit is also provided, which is integrally disposed with the slurry tank; the carrier coated with slurry undergoes a draining operation in the draining unit.

[0012] In a preferred embodiment, the carrier input unit includes an incoming material conveyor belt, an incoming material inspection module, a loading conveyor belt, and an input waste conveyor belt; the carriers conveyed by the incoming material conveyor belt are inspected by the incoming material inspection module, and carriers that pass the inspection enter the loading conveyor belt for loading operations; unqualified carriers are transferred to the waste conveyor belt for removal.

[0013] According to the aforementioned technical solution, the slurry coating device of this application can complete the slurry coating more evenly and can greatly improve the production efficiency. Attached Figure Description

[0014] To more clearly illustrate this application, the accompanying drawings will be described and explained below. Obviously, the drawings described below only illustrate certain aspects of some exemplary embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the slurry coating device.

[0016] Figure 2 This is a top view of the first carrier fixing component.

[0017] Figure 3 This is a front view of the first carrier fixing component.

[0018] Figure 4 This is a schematic diagram of the carrier loading process.

[0019] Figure 5 This is a schematic diagram of the carrier unloading process.

[0020] Figure 6 This is a schematic diagram of the wire mesh structure of the carrier.

[0021] Figure 7 This is a schematic diagram of the coating effect in Example 1.

[0022] Figure 8 This is a schematic diagram of the coating effect in Example 2.

[0023] Figure 9 This is a schematic diagram of the coating effect in Example 3.

[0024] Attached image caption:

[0025] 1 Carrier Input Unit

[0026] 11 Incoming Material Conveyor Belt

[0027] 12 Incoming Material Inspection Modules

[0028] 13 Loading Conveyor Belt

[0029] 14 Input waste conveyor belt

[0030] 2 spin coating units

[0031] 20 bodies of revolution

[0032] 21 First carrier fixing component

[0033] 2111 First Main Clamping Net

[0034] 2112 First clamping net

[0035] 2113 First drive shaft

[0036] 2114 Second Drive Shaft

[0037] 2131 Third Main Clamping Net

[0038] 2132 Third clamping net

[0039] 2133 Third Drive Shaft

[0040] 2134 Fourth Drive Shaft

[0041] 210 First Telescopic Pole

[0042] 2101 First telescopic rod moving part

[0043] 2102 First telescopic rod base section

[0044] 211 First Loading Mechanism

[0045] 212 Second Loading Mechanism

[0046] 213 Third Loading Mechanism

[0047] 214 Fourth Loading Mechanism

[0048] 215 First carrier fixing component base

[0049] 216 telescopic pole mounting hole

[0050] 22 Second carrier fixing component

[0051] 23 Third carrier fastener

[0052] 24 Fourth carrier fixing component

[0053] 25 Fifth carrier fastener

[0054] 26 Sixth carrier fastener

[0055] 27 Seventh Carrier Fixing Component

[0056] 28 Eighth carrier fastener

[0057] 201 cleaning box

[0058] 202 Drying Oven

[0059] 203 Calcination Oven

[0060] 3 Slurry Tank

[0061] 30 slurry tank

[0062] 31 Slurry Storage Tank

[0063] 4 Carrier Output Unit

[0064] 41 Unloading Conveyor

[0065] 42 Unloading Quality Inspection Module

[0066] 43 Output Conveyor Belt

[0067] 44 Output Waste Conveyor

[0068] 5 draining spaces

[0069] 6 carriers Detailed Implementation

[0070] Various exemplary embodiments of this application are described in detail below with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the application or its application or use. This application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise stated, the relative arrangement of components and steps, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0071] As used in this application, the words “including” or “comprising” or similar terms mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility that it may also cover other elements.

[0072] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as being interpreted with idealized or highly formalized meanings, unless explicitly defined herein.

[0073] For components, specific model numbers and other parameters of components not described in detail in this section, the interrelationships between components and control circuits, these may be considered as techniques, methods and devices known to those skilled in the art, but where appropriate, such techniques, methods and devices should be considered part of the specification.

[0074] Overall Structure

[0075] The following is for reference Figure 1-6 This application describes the specific structure of the slurry coating apparatus. Figure 1 This is a schematic diagram of the overall structure of the slurry coating device. Figure 2 This is a top view of the first carrier fixing component 21. Figure 3 This is a front view of the first carrier fixing member 21. Figure 4 This is a schematic diagram of the loading process of carrier 6. Figure 5 This is a schematic diagram of the unloading process of carrier 6. Figure 6 This is a schematic diagram of the wire mesh structure of carrier 6.

[0076] like Figure 1As shown, the slurry coating apparatus of this application includes a carrier input unit 1, a rotary coating unit 2, a slurry tank 3, and a carrier output unit 4. The carrier input unit 1 is used to transport a carrier 6, which in this embodiment is a catalyst carrier. The rotary coating unit 2 includes a rotating body 20 and multiple carrier fixing members spaced apart from the axis surrounding the rotating body 20. Exemplarily, the rotating body 20 is a disc shape as shown in the figure, but its shape is not actually limited.

[0077] Figure 1 Only eight carrier fixing members are shown in the diagram, evenly spaced around the circumference of the rotating body 20. These are designated as the first carrier fixing member 21, the second carrier fixing member 22, the third carrier fixing member 23, the fourth carrier fixing member 24, the fifth carrier fixing member 25, the sixth carrier fixing member 26, the seventh carrier fixing member 27, and the eighth carrier fixing member 28. In practice, the number and distribution of carrier fixing members are not limited to this; there can be two, three, or more, and they can be evenly or unequally spaced. Each carrier fixing member has the same structural style, and in this embodiment, preferably, each carrier fixing member is connected to the rotating body 20 via a telescopic rod. It can be understood that the telescopic rod is only a preferred method for connecting the carrier fixing member to the rotating body 20, to better accommodate the positional relationship between the carrier input unit 1 and the slurry tank 3. In practice, fixing rods or other methods can also be used for connection.

[0078] For ease of explanation, only the first carrier fixing component 21 and the first telescopic rod 210 are used as examples here. The structure and working principle of other carrier fixing components and telescopic rods are the same and will not be repeated.

[0079] Continue reading Figure 1 The axis of the rotating body 20 is perpendicular to the feeding direction of the carrier input unit 1. This feeding direction is the forward direction of the loading conveyor belt 13 shown in the figure, that is, the direction indicated by the arrow at the loading conveyor belt 13. For ease of explanation, this feeding direction is taken as from right to left, with the carrier 6 placed above the loading conveyor belt 13.

[0080] Next, the structure of the carrier fixing component will be explained in detail.

[0081] See Figure 2 , Figure 3Each of the aforementioned carrier fixing components is rotatable around its connected telescopic rod and is provided with at least one loading mechanism. Taking the first carrier fixing component 21 as an example, it includes a first carrier fixing component base 215 and a first loading mechanism 211, a second loading mechanism 212, a third loading mechanism 213, and a fourth loading mechanism 214 spaced apart on the first carrier fixing component base 215. The four loading mechanisms are connected by telescopic rod mounting holes 216 for mounting the first telescopic rod 210. Exemplarily, the first telescopic rod 210 includes a first telescopic rod base portion 2102 and a first telescopic rod moving portion 2101. The first telescopic rod moving portion 2101 is sleeved within the first telescopic rod base portion 2102 and moves and extends along the first telescopic rod base portion 2102.

[0082] It should be noted that the number of loading mechanisms on each carrier fixing member is not limited to the four shown in the figure, nor is their distribution limited to equal intervals; there can be one, two, or more. The four loading mechanisms in this embodiment are merely a preferred method to improve the loading efficiency of the carrier 6. When each carrier fixing member reaches the predetermined loading position, it switches between different loading mechanisms by rotating around the telescopic rod, thereby allowing each carrier fixing member to load as many carriers 6 as possible at a time. As a preferred method, the four loading mechanisms are distributed at a 90-degree angle to each other to avoid interference between adjacent loading mechanisms when loading the carrier 6.

[0083] Preferably, the loading mechanism structure on each carrier fixing member is identical; here, only the first loading mechanism 211 of the first carrier fixing member 21 is described as an example. (Continue reading...) Figure 2 , Figure 3 The first loading mechanism 211 is a clamping mechanism composed of a first main clamping mesh 2111 and a first auxiliary clamping mesh 2112 arranged opposite to each other. In this embodiment, the first main clamping mesh 2111 and the first auxiliary clamping mesh 2112 are metal meshes, which are driven and controlled by a first drive shaft 2113 and a second drive shaft 2114, respectively. The first drive shaft 2113 can drive the first main clamping mesh 2111 to open and close, and the second drive shaft 2114 can drive the first auxiliary clamping mesh 2112 to open and close. Similarly, the third loading mechanism 213 includes a third main clamping mesh 2131 and a third auxiliary clamping mesh 2132, which are driven and controlled to open and close by a third drive shaft 2133 and a fourth drive shaft 2134, respectively. Further details are omitted here.

[0084] Next, the loading and unloading process of carrier 6 will be explained in detail.

[0085] See Figure 1The carrier input unit 1 includes an incoming material conveyor belt 11, an incoming material quality inspection module 12, a loading conveyor belt 13, and an input waste material conveyor belt 14. The carrier output unit 4 includes an unloading conveyor belt 41, an unloading quality inspection module 42, an output conveyor belt 43, and an output waste material conveyor belt 44.

[0086] The carrier 6 is conveyed to the incoming material inspection module 12 via the incoming material conveyor belt 11 for inspection. If the dimensions and weight of the carrier 6 are qualified, it enters the loading conveyor belt 13 for loading onto the aforementioned carrier fixing component; if it is unqualified, it enters the waste conveyor belt 14 for removal. In this embodiment, as... Figure 6 As shown, carrier 6 is a 30mm*20mm*20mm wire mesh carrier. Figure 6 The top view of carrier 6 is on the right, and the side view of carrier 6 is on the left.

[0087] By rotating the rotating body 20, a single carrier fixing member among the aforementioned plurality of carrier fixing members is brought to a predetermined loading position on the carrier input unit 1. This loading position is as follows: Figure 4 The left side of the loading conveyor belt 13 is shown. At the same time, the carrier 6 on the loading conveyor belt 13 is transported here for loading operations.

[0088] The loading process of the first carrier fixing component 21 will be used as an example for explanation. The loading process of other carrier fixing components is the same and will not be repeated.

[0089] See Figure 4 As the rotating body 20 rotates, the first carrier fixing member 21 reaches the loading position on the left side of the loading conveyor belt 13. The first carrier fixing member 21 rotates around the first telescopic rod 210, causing one of the loading mechanisms to reach the left side of the loading conveyor belt 13. Taking the first loading mechanism 211 as an example, at this time, the first drive shaft 2113 drives the first main clamping net 2111 of the first loading mechanism 2111 to open, and the movable end of the first main clamping net 2111 falls on the loading conveyor belt 13. Then, the carrier 6 on the loading conveyor belt 13 is transferred to the first main clamping net 2111 as the conveyor belt moves. The first drive shaft 2113 then drives the first main clamping net 2111 to close, thus completing the loading of the first loading mechanism 211. Preferably, the opening angle of the first main clamping net 2111 when it is open can be set between 0-150°, and the first carrier fixing member 21 can rotate intermittently, with the rotation speed set between 0-1500 rpm / min.

[0090] Afterwards, the first carrier fixing member 21 continues to rotate around the first telescopic rod 210. In this embodiment, it rotates 90° to load the carrier 6 onto the next second loading mechanism 212, and so on, until all loading mechanisms of the carrier fixing member have been loaded.

[0091] It is understood that the aforementioned left side of the loading conveyor belt 13 is only a general description of the location, including the upper left side, etc. The specific location needs to be adjusted in the actual equipment to achieve smooth loading operation. The left side is also only a preferred loading position. In fact, the predetermined loading position is not limited to this. It can also be other convenient loading positions, such as above the loading conveyor belt 13, etc., which are not specifically limited here.

[0092] Meanwhile, to facilitate loading, after a single carrier fixing member reaches the predetermined loading position, its connected telescopic rod can extend or retract to ensure that the carrier 6 on the loading conveyor belt 13 is smoothly loaded into the loading mechanism of the carrier fixing member. This provides more redundancy for the gap between the carrier fixing member and the loading conveyor belt 13. For example, when the first carrier fixing member 21 reaches the predetermined loading position, the first telescopic rod 210 extends, allowing the first main clamping net 2111 of the first loading mechanism 211 to open and fall onto the loading conveyor belt 13.

[0093] Next, the coating operation and subsequent operations of carrier 6 will be explained in detail.

[0094] See Figure 1 The following explanation will still take the first carrier fixing member 21 as an example. During the loading of the carrier 6 by the first carrier fixing member 21, preferably, the rotating body 20 stops rotating, and after the loading operation is completed, the first telescopic rod 210 returns to its initial position.

[0095] The rotating body 20 continues to rotate. In this embodiment, the rotating body 20 rotates 45 degrees, and the first carrier fixing member 21, carrying the carrier 6, reaches above the slurry tank 3. The first telescopic rod 210 extends, causing the carrier 6 loaded on the first carrier fixing member 21 to be submerged in the slurry tank 3. At this time, the rotating body 20 can stop rotating or rotate at a preset speed to ensure that all carriers 6 loaded on the first carrier fixing member 21 are uniformly coated with slurry. The slurry tank 3 and the slurry storage tank 31 are connected by a pumping mechanism. The slurry storage tank 31 contains slurry and is used to pump slurry into the slurry tank 3.

[0096] like Figure 1 As shown, preferably, the slurry tank 30, where the slurry pool 3 is located, has a draining space 5 above the slurry pool 3, in addition to the space for storing slurry. After the carrier 6 has been coated in the slurry pool 3 for a specified time, the first telescopic rod 210 retracts, the first carrier fixing member 21 removes the carrier 6 from the slurry pool 3, and the rotating body 20 continues to rotate. In this embodiment, the rotating body 20 rotates 45°, and the first carrier fixing member 21 carries the carrier 6 to the draining space 5.

[0097] Then, preferably, the first carrier fixing member 21 begins to rotate around the first telescopic rod 210 at a predetermined speed, throwing excess slurry into the slurry pool 3. Of course, the first carrier fixing member 21 may also remain stationary, allowing excess slurry to drip off naturally.

[0098] At the draining space 5, the rotating body 20 can stop rotating or rotate at a preset speed. Excess slurry coated on the carrier 6 falls into the slurry pool 3, which can make the slurry coated on the carrier 6 more uniform and reduce the cost of slurry.

[0099] Continue reading Figure 1 The slurry coating apparatus of this application also includes a drying chamber 202 and a calcining chamber 203. Taking the first carrier fixing member 21 as an example, the following description is provided. After the draining operation, the rotating body 20 continues to rotate. The first carrier fixing member 21, carrying the carrier 6, first enters the drying chamber 202 for drying. After drying, it then enters the calcining chamber 203 for calcination. During the drying and calcination operations in the drying chamber 202 and the calcining chamber 203, the rotating body 20 can stop rotating or rotate at a preset speed, as long as the carrier 6 of the first carrier fixing member 21 completes the corresponding operation. For example, the temperature inside the drying chamber 202 can be set between 0-150℃, and the temperature inside the calcining chamber 203 can be set between 0-650℃.

[0100] It should be noted that the time required for the drying operation and the roasting operation can be the same or different. The dimensions of the drying chamber 202 and the roasting chamber 203 are respectively set to correspond to the preset residence time of the carrier 6 in the drying chamber 202 and the roasting chamber 203. For example, assuming that the rotating body 20 always rotates at a specified speed during the drying and roasting operations, and the time required for the drying operation is t1, and the time required for the roasting operation is t2, then the dimensions of the drying chamber 202 should be able to ensure that the carrier 6 does not leave the drying chamber 202 within time t1 at the specified rotational speed of the rotating body 20, and the dimensions of the roasting chamber 203 should be able to ensure that the carrier 6 does not leave the roasting chamber 203 within time t2 at the specified rotational speed of the rotating body 20.

[0101] Next, the uninstallation process will be explained.

[0102] See Figure 1 , Figure 5 The explanation will still take the first carrier fixing component 21 as an example.

[0103] After the roasting process is completed, the rotating body 20 continues to rotate, in this embodiment by 45°, and the first carrier fixing member 21 is placed in the air to cool naturally. After cooling, the rotating body 20 continues to rotate, in this embodiment by 45°, and the first carrier fixing member 21 reaches the predetermined unloading position. The carrier 6 detaches from the carrier fixing member and enters the carrier output unit 4.

[0104] Specifically, such as Figure 5 As shown, the predetermined unloading position is the position to the left of the unloading conveyor belt 41. This left side is only a general direction and includes directions such as the upper left. This left side is also only a preferred unloading position. In fact, the predetermined unloading position is not limited to this. It can also be other convenient unloading positions, such as above the unloading conveyor belt 41, etc. There are no specific limitations here.

[0105] The first carrier fixing member 21 rotates around the first telescopic rod 210, causing a single loading mechanism to reach a predetermined loading position. Taking the first loading mechanism 211 as an example, the second drive shaft 2114 drives the first clamping net 2112 to open, transferring the carrier 6 loaded by the first loading mechanism 211 onto the unloading conveyor belt 41. In this embodiment, the carrier 6 can fall naturally due to gravity. Then, the first carrier fixing member 21 rotates around the first telescopic rod 210, rotating 90° in this embodiment, to unload the carrier 6 loaded by the next loading mechanism, such as the second loading mechanism 212, until all the carriers 6 in all loading mechanisms on the first carrier fixing member 21 are unloaded.

[0106] Continue reading Figure 1 After the carrier 6 is unloaded onto the unloading conveyor belt 41, the unloading conveyor belt 41 will transport the carrier 6 to the unloading quality inspection module 42, where the size and coating amount of the carrier 6 will be inspected. If the size and coating amount of the carrier 6 are qualified, the carrier 6 will be transported to the output conveyor belt 43. If the size and coating amount of the carrier 6 are not qualified, the carrier 6 will be transported to the output waste conveyor belt 44 and collected.

[0107] After the unloading operation is completed, the rotating body 20 continues to rotate, in this embodiment by 45°. The first carrier fixing member 21 is placed in the cleaning tank 201. Then, preferably, the first carrier fixing member 21 starts to rotate at high speed according to a predetermined speed to perform the cleaning step. After cleaning is completed, the rotating body 20 continues to rotate, in this embodiment by 45°. The first carrier fixing member 21 returns to the predetermined loading position of the carrier input unit 1 and begins to repeatedly load the uncoated carrier 6, thereby completing one round of coating process. The loading, coating, drying, baking, and unloading processes of other carrier fixing members are the same as those of the first carrier fixing member 21, and will not be repeated here.

[0108] Next, combined Figure 7-9 The coating effect of this device will be explained. Figure 7 This is a schematic diagram of the coating effect in Example 1. Figure 8 This is a schematic diagram of the coating effect in Example 2. Figure 9 This is a schematic diagram of the coating effect in Example 3.

[0109] like Figure 7As shown above, in Example 1, a 30mm*20mm*20mm screen carrier 6 was selected as the carrier. Following the aforementioned procedures, after completing the work on 1000 carriers 6, they were weighed. In the figure, the upper horizontal line represents the upper limit of the coating amount, the lower horizontal line represents the lower limit of the coating amount, and the data points in the middle represent the coating amount of a single carrier 6. It can be seen that the coating amount is highly consistent and all within the required range.

[0110] like Figure 8 As shown, in Example 2, the carrier 6 was a 25mm*15mm*20mm screen carrier. The operation was the same as in Example 1. After producing 1000 carriers 6, they were weighed, and the coating amount results are shown in the figure. The upper horizontal line in the figure represents the upper limit of the coating amount, the lower horizontal line represents the lower limit of the coating amount, and the data points in the middle represent the coating amount of a single carrier 6. It can be seen that the coating amount is highly consistent and all within the required range.

[0111] like Figure 9 As shown, in Example 3, the carrier 6 was a 40mm*30mm*25mm screen carrier. The operation was the same as in Example 1. After producing 1000 carriers 6, they were weighed, and the coating amount results are shown in the figure. The upper horizontal line in the figure represents the upper limit of the coating amount, the lower horizontal line represents the lower limit of the coating amount, and the data points in the middle represent the coating amount of a single carrier 6. It can be seen that the coating amount is highly consistent and all within the required range.

[0112] It is evident that the slurry coating device of this application can be applied to the production of various screen carriers of different specifications, and the batch coating consistency is high.

[0113] In summary, the slurry coating device of this application addresses the coating challenges of small-volume catalyst supports by employing an automated operation mode. Through a multi-axis coordinated motion system, it achieves precise control of the slurry coating amount, effectively solving problems such as uneven thickness and missed coating caused by manual coating. Its design with multiple carrier fixing components allows for compatibility with carriers of different specifications. Experimental results show that the overall coating efficiency is 3-5 times higher than manual coating, with a slurry utilization and recovery rate exceeding 95%, significantly reducing precious metal loss. The equipment is equipped with an intelligent monitoring module that provides real-time feedback on coating thickness and coverage, resulting in high product consistency.

[0114] It should be understood that the specific embodiments described above are only used to explain this application, and the scope of protection of this application is not limited thereto. Any changes, substitutions, or combinations made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be covered within the scope of protection of this application.

Claims

1. A slurry coating apparatus, characterized in that: It includes a carrier input unit, a spin coating unit, a slurry tank, and a carrier output unit; The carrier input unit is used to transport the carrier; The rotary coating unit includes a rotating body and a plurality of carrier fixing members spaced apart around the axis of the rotating body; The axis of the rotating body is perpendicular to the feeding direction of the carrier input unit. As the rotating body rotates, a single carrier fixing member among the plurality of carrier fixing members can reach the predetermined loading position of the carrier input unit, and the carrier conveyed by the carrier input unit is loaded onto the carrier fixing member. As the rotating body rotates further, the carrier fixing member enters the slurry pool, so that the slurry in the slurry pool coats the carrier loaded on the carrier fixing member; As the rotating body rotates further, it drives the carrier fixing member to leave the slurry tank and reach the predetermined unloading position. The carrier then detaches from the carrier fixing member and enters the carrier output unit.

2. The slurry coating apparatus according to claim 1, characterized in that: Each of the plurality of carrier fixing components is connected to the rotating body via a telescopic rod.

3. The slurry coating apparatus according to claim 2, characterized in that: Each of the plurality of carrier fixing components is rotatable around the telescopic rod and is provided with at least one loading mechanism. When a single carrier fixing member among the plurality of carrier fixing members reaches the predetermined loading position, the rotation of the carrier fixing member causes each of the at least one loading mechanism to load the carrier.

4. The slurry coating apparatus according to claim 3, characterized in that: Each of the at least one loading mechanism is a clamping mechanism consisting of a main clamping net and a secondary clamping net arranged opposite to each other; When loading the carrier, the main clamping net opens, the carrier input unit conveys the carrier to the main clamping net, and then the main clamping net closes. When the carrier is unloaded, the secondary clamping net opens, the carrier disengages from the loading mechanism, and then the secondary clamping net closes.

5. The slurry coating apparatus according to claim 1, characterized in that: The slurry coating device also includes a drying unit and a calcination unit; As the rotating body rotates, each of the plurality of carrier fixing members leaves the slurry pool and enters the drying unit and the roasting unit in sequence, so that the carrier loaded on it undergoes drying and roasting operations in sequence.

6. The slurry coating apparatus according to claim 5, characterized in that: The dimensions of the drying unit and the calcining unit are respectively set to correspond to the preset residence time of the carrier in the drying unit and the calcining unit.

7. The slurry coating apparatus according to claim 1, characterized in that: It also has a draining unit, which is integrally formed with the slurry tank; The carrier coated with slurry is then drained in the draining unit.

8. The slurry coating apparatus according to claim 1, characterized in that: The carrier input unit includes an incoming material conveyor belt, an incoming material quality inspection module, a loading conveyor belt, and an input waste material conveyor belt; The carriers conveyed by the incoming material conveyor belt are inspected by the incoming material quality inspection module. Carriers that pass the inspection enter the loading conveyor belt for loading operations; unqualified carriers are transferred to the waste conveyor belt for removal.

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