A catalyst preparation apparatus and preparation process

Abstract

The application relates to the field of catalyst preparation, and particularly discloses a catalyst preparation device and a preparation process, which comprise a support and a crushing and screening mechanism, the crushing and screening mechanism comprises a crushing barrel and a crushing assembly, the crushing barrel is installed on the support in a liftable mode, and a plurality of sieve holes are arranged in the barrel bottom of the crushing barrel; the crushing assembly is installed on the support, and the crushing assembly has a first state and a second state; in the first state, the crushing assembly is located in the crushing barrel; and in the second state, the crushing assembly is located outside the crushing barrel. The application can reduce the average particle size of a platinum-carbon catalyst finished product, and is beneficial to the improvement of catalytic activity.

Description

Technical Field

[0001] This application relates to the field of catalyst preparation, and in particular to a catalyst preparation apparatus and preparation process. Background Technology

[0002] Currently, the catalysts used in proton exchange membrane fuel cells are mainly platinum-carbon catalysts.

[0003] In related technologies, the preparation of platinum-carbon catalysts involves first activating activated carbon, then loading metallic platinum onto the activated carbon to form a platinum-carbon catalyst containing impurity elements. The platinum-carbon catalyst containing impurity elements is then washed and filtered to remove the impurity elements. The filtered platinum-carbon catalyst is then dried, and finally the dried platinum-carbon catalyst is crushed to form a granular finished product that can be used directly.

[0004] The aforementioned technologies have the following drawbacks: directly using the crushed platinum-carbon catalyst cannot ensure the particle size of the finished platinum-carbon catalyst, and when the average particle size of the platinum-carbon catalyst particles is relatively large, the catalytic activity is low. Summary of the Invention

[0005] To reduce the average particle size of the finished platinum-carbon catalyst, this application provides a catalyst preparation apparatus and a preparation process.

[0006] The catalyst preparation equipment and process provided in this application adopt the following technical solution:

[0007] A catalyst preparation device includes a support frame and a crushing and screening mechanism. The crushing and screening mechanism includes a crushing barrel and a crushing assembly. The crushing barrel is vertically mounted on the support frame, and the bottom of the crushing barrel is provided with a plurality of sieve holes.

[0008] The crushing component is mounted on the support and has a first state and a second state. In the first state, the crushing component is located inside the crushing barrel, and in the second state, the crushing component is located outside the crushing barrel.

[0009] By adopting the above technical solution, the crushing component is first placed in the second state, and the blocky platinum-carbon catalyst is placed into the crushing barrel. Then, the crushing component is placed in the first state. The crushing component is then operated to crush the blocky platinum-carbon catalyst into particles. During the crushing process, the crushing barrel sieves the platinum-carbon catalyst particles through several sieve openings. Particles larger than the sieve openings remain in the crushing barrel for further crushing, while particles smaller than the sieve openings fall through the sieve and are collected for use. The crushing and sieving of the platinum-carbon catalyst occur simultaneously, resulting in high production efficiency. Furthermore, sieving reduces the average particle size of the finished platinum-carbon catalyst, which is beneficial for improving catalytic activity.

[0010] Optionally, the crushing and screening mechanism further includes a vibration assembly, which includes a vibrating element and a base. One end of the vibrating element is detachably mounted on the support, and the other end is connected to the base. The outer wall of the crushing barrel is detachably connected to the base.

[0011] The crushing component is in elastic contact with the inner bottom of the crushing barrel.

[0012] By adopting the above technical solution, when the platinum-carbon catalyst particles are sieved through several sieve holes in the crushing barrel, the vibrating component is operated to make the crushing barrel vibrate up and down, which facilitates the rapid sieving of the platinum-carbon catalyst particles. The crushing component is in elastic contact with the inner bottom of the crushing barrel. When the crushing barrel vibrates up and down, the crushing component can always be pressed against the inner bottom of the crushing barrel, which helps to maintain the relative position of the crushing component and the crushing barrel. In this way, the crushing component can always cooperate well with the crushing barrel, and the platinum-carbon catalyst can be effectively crushed when the crushing barrel vibrates.

[0013] Optionally, the crushing assembly includes a barrel lid, a first spring rod, a first rotating shaft, and blades. The barrel lid is vertically and retractably mounted on the bracket and is coaxial with the crushing barrel.

[0014] The first spring rod is coaxially disposed on the side of the bucket lid near the crushing bucket, and one end is rotatably connected to the bucket lid, and the other end is connected to the first end of the first rotating shaft;

[0015] The second end of the first rotating shaft is in elastic contact with the inner bottom of the crushing barrel;

[0016] The blade is mounted on the side wall of the first rotating shaft.

[0017] By adopting the above technical solution, in the first state, the height of the lid is lowered so that it covers the opening of the crushing barrel. Simultaneously, under the action of the first spring rod, the first rotating shaft makes elastic contact with the inner bottom of the crushing barrel, facilitating the maintenance of the relative position between the blades and the crushing barrel during vibration. When crushing the platinum-carbon catalyst, the first spring rod is driven to rotate, which in turn drives the first rotating shaft to rotate, which in turn drives the blades to rotate and crush the platinum-carbon catalyst.

[0018] Optionally, the crushing and screening mechanism further includes a guide pipe, which is located below the crushing barrel and is vertically installed on the support.

[0019] The crushing barrel can move into the feed pipe.

[0020] By adopting the above technical solution, when the crushing barrel screens the platinum-carbon catalyst particles, the particles easily scatter and fall due to the continuous vibration of the crushing barrel. During operation, the height of the crushing barrel is lowered so that its bottom enters the feed pipe, ensuring that all screened platinum-carbon catalyst particles fall into the feed pipe and are discharged directionally through it.

[0021] Optionally, the crushing and screening mechanism further includes a limiting ring, which is coaxially installed at one end of the guide pipe near the crushing barrel, and the crushing barrel can move into the limiting ring;

[0022] The crushing barrel can be slidably connected to the limiting ring along the axial direction of the limiting ring.

[0023] By adopting the above technical solution, when the crushing barrel is inserted into the guide pipe, the lower end of the crushing barrel can be fixed by sliding connection with the limiting ring, so that the lower end of the crushing barrel is not easy to swing, and at the same time, it will not interfere with the up and down vibration of the crushing barrel.

[0024] Optionally, the catalyst preparation equipment further includes a mixing mechanism, which includes a weighing component, a mixing tank, and a stirring assembly, wherein the mixing tank is coaxially disposed below the feed pipe;

[0025] One end of the weighing component is connected to the bracket, and the other end is connected to the mixing tank;

[0026] The stirring assembly is located between the mixing tank and the feed pipe. The stirring assembly is mounted on the support and is in elastic contact with the inner bottom of the mixing tank.

[0027] By employing the above technical solution, the mixing tank catches the platinum-carbon catalyst particles falling from the discharge end of the feed pipe. The stirring assembly is used to mix the platinum-carbon catalyst particles in the mixing tank, ensuring that particles of different sizes are evenly distributed and mixed as uniformly as possible. The weighing device is used to weigh the platinum-carbon catalyst in the mixing tank, determining whether the tank is nearly full based on the weighing data. If the mixing tank is nearly full, the crushing and screening mechanism can be paused. After the platinum-carbon catalyst particles of different sizes are evenly mixed and discharged, the crushing and screening mechanism can be restarted. During the weighing of the platinum-carbon catalyst in the mixing tank, the height of the tank changes. The stirring assembly maintains its relative position to the inner bottom of the mixing tank through elastic contact, ensuring that the stirring assembly always effectively mixes the platinum-carbon catalyst particles within the tank.

[0028] Optionally, the stirring assembly includes a driven gear ring, a second spring rod, a second rotating shaft, and blades, with the first end of the driven gear ring coaxially and rotatably mounted on the end of the feed pipe away from the mixing tank;

[0029] The second spring rod is coaxially disposed inside the driven gear ring, and a plurality of connecting rods are connected between the first end of the second spring rod and the driven gear ring;

[0030] The second rotating shaft is located between the second spring rod and the inner bottom of the mixing barrel, and is coaxially connected to the second end of the second spring rod;

[0031] Multiple blades are spaced apart on the sidewall of the second shaft.

[0032] By adopting the above technical solution, the driven gear ring is driven to rotate, which in turn drives the second spring rod to rotate. The second spring rod drives the second rotating shaft to rotate, which in turn drives the blades to rotate. The blades stir the platinum-carbon catalyst particles in the mixing tank. The second spring rod ensures that the second rotating shaft is in elastic contact with the bottom of the mixing tank, maintaining the relative position between the blades and the mixing tank, ensuring that the blades can always fully mix the platinum-carbon catalyst particles in the mixing tank.

[0033] Optionally, the mixing mechanism further includes a sealing assembly, which includes a connecting ring and a telescopic tube. The connecting ring is mounted on the bracket, and the first end of the connecting ring is coaxially and rotatably connected to the second end of the driven gear ring.

[0034] The first end of the driven gear ring is movably sealed with the guide tube, and the second end of the driven gear ring is movably sealed with the connecting ring;

[0035] The first end of the telescopic tube is connected to the second end of the connecting ring, and the second end of the telescopic tube is connected to the opening of the mixing tank.

[0036] By adopting the above technical solution, a movable seal is formed between the first end of the driven gear ring and the feed pipe, preventing platinum-carbon catalyst particles from spilling out between the first end of the driven gear ring and the feed pipe. A movable seal is also formed between the second end of the driven gear ring and the connecting ring, preventing platinum-carbon catalyst particles from spilling out between the second end of the driven gear ring and the connecting ring. The telescopic tube prevents platinum-carbon catalyst particles from spilling out between the connecting ring and the opening of the mixing tank, and the telescopic tube can extend and retract to accommodate changes in the height of the mixing tank.

[0037] Optionally, the mixing tank is equipped with a discharge valve at the bottom.

[0038] By adopting the above technical solution, the discharge valve is used to discharge material from the mixing tank.

[0039] A catalyst preparation process, based on the catalyst preparation equipment described above, includes the following steps:

[0040] Platinum metal is loaded onto activated carbon to form a platinum-carbon catalyst.

[0041] The platinum-carbon catalyst was purified.

[0042] The purified platinum-carbon catalyst was dried.

[0043] The dried platinum-carbon catalyst is placed in the crushing barrel and crushed using the crushing assembly to obtain platinum-carbon catalyst particles at the bottom of the crushing barrel.

[0044] By employing the above technical solution, platinum metal is loaded onto activated carbon to form a platinum-carbon catalyst. The platinum-carbon catalyst is then purified and dried. The dried catalyst is placed in a crushing chamber and crushed using a crushing assembly to obtain platinum-carbon catalyst particles at the bottom of the chamber. The crushing and sieving of the platinum-carbon catalyst are carried out simultaneously, resulting in high production efficiency. Furthermore, sieving reduces the average particle size of the finished platinum-carbon catalyst, which is beneficial for improving catalytic activity.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. In this application, a crushing and sieving mechanism is used to crush and sieve the dried platinum-carbon catalyst to obtain platinum-carbon catalyst particles. The crushing and sieving of the platinum-carbon catalyst are carried out simultaneously, resulting in high production efficiency. Moreover, after sieving, the average particle size of the finished platinum-carbon catalyst is reduced, which is beneficial to improving the catalytic activity.

[0047] 2. The crushing and screening mechanism in this application can crush and screen simultaneously. The crushing barrel and crushing components work together to crush the blocky platinum-carbon catalyst located in the crushing barrel. During the crushing process of the platinum-carbon catalyst, the crushing barrel can screen the platinum-carbon catalyst particles through several sieve holes. Particles larger than the sieve holes will remain in the crushing barrel to continue to be crushed, while particles smaller than the sieve holes will fall through the sieve holes and be collected and used.

[0048] 3. In this application, the crushing barrel vibrates up and down by operating a vibrating component, which facilitates the rapid sieving of platinum-carbon catalyst particles. The crushing component is in elastic contact with the inner bottom of the crushing barrel. When the crushing barrel vibrates up and down, the crushing component can always press against the inner bottom of the crushing barrel, which helps to maintain the relative position of the crushing component and the crushing barrel. This allows the crushing component to always cooperate well with the crushing barrel, and the platinum-carbon catalyst can also be effectively crushed when the crushing barrel vibrates.

[0049] 4. The mixing mechanism in this application is used to further mix the sieved platinum-carbon catalyst particles, so that the platinum-carbon catalyst particles of different sizes are evenly distributed in the mixing tank as much as possible, and the platinum-carbon catalyst particles of different sizes are mixed as evenly as possible, which is beneficial to the stability of the overall catalytic performance of the platinum-carbon catalyst per unit volume. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the overall structure of the catalyst preparation equipment;

[0052] Figure 2 This is a cross-sectional schematic diagram of the catalyst preparation equipment;

[0053] Figure 3 This is a schematic diagram of the catalyst preparation process.

[0054] Figure label:

[0055] 1. Support frame; 2. Crushing and screening mechanism; 21. Crushing barrel; 210. Screen hole; 22. Crushing assembly; 221. Barrel cover; 222. First spring rod; 223. First rotating shaft; 224. Blade; 225. First motor; 23. Vibration assembly; 231. Vibrating component; 232. Base; 24. Guide pipe; 25. Limiting ring; 3. Mixing mechanism; 31. Weighing component; 32. Mixing barrel; 321. Discharge valve; 33. Stirring assembly; 331. Driven gear ring; 332. Connecting rod; 333. Second spring rod; 334. Second rotating shaft; 335. Blade; 336. Drive gear; 337. Second motor; 34. Sealing assembly; 341. Connecting ring; 342. Telescopic pipe; 4. Receiving barrel. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0057] This application discloses a catalyst preparation apparatus and preparation process. (Refer to...) Figure 1 and Figure 2A catalyst preparation device includes a support 1, a crushing and screening mechanism 2, a mixing mechanism 3, and a receiving bucket 4. The crushing and screening mechanism 2 includes a crushing bucket 21 and a crushing component 22. The crushing bucket 21 is vertically mounted on the support 1, and the bottom of the crushing bucket 21 is provided with a plurality of sieve holes 210. The crushing component 22 is mounted on the support 1 and has a first state and a second state. In the first state, the crushing component 22 is located inside the crushing bucket 21, and in the second state, the crushing component 22 is located outside the crushing bucket 21.

[0058] Reference Figure 1 and Figure 2 The mixing mechanism 3 is located below the crushing barrel 21. The mixing mechanism 3 includes a weighing component 31, a mixing barrel 32, and a stirring assembly 33. The mixing barrel 32 is coaxially positioned below the guide pipe 24, and a discharge valve 321 is located at the bottom of the mixing barrel 32. One end of the weighing component 31 is connected to the support 1, and the other end is connected to the mixing barrel 32. The stirring assembly 33 is located between the mixing barrel 32 and the crushing barrel 21, mounted on the support 1, and elastically contacts the inner bottom of the mixing barrel 32. A receiving barrel 4 is located below the discharge valve 321.

[0059] Reference Figure 1 and Figure 2 In this embodiment, the crushing assembly 22 is first placed in the second state, and the blocky platinum-carbon catalyst is placed into the crushing barrel 21. Then, the crushing assembly 22 is placed in the first state. The crushing assembly 22 is operated to crush the blocky platinum-carbon catalyst into particles. During the crushing process, the crushing barrel 21 can sieve the platinum-carbon catalyst particles through several sieve holes 210. Particles larger than the sieve holes 210 will remain in the crushing barrel 21 and continue to be crushed. Particles smaller than the sieve holes 210 will fall into the mixing barrel 32 through the sieve holes 210. The stirring assembly 33 is used to mix the platinum-carbon catalyst particles in the mixing barrel 32, so that the platinum-carbon catalyst particles of different sizes are evenly distributed in the mixing barrel 32 as much as possible, and the platinum-carbon catalyst particles of different sizes are mixed as evenly as possible. The weighing component 31 is used to weigh the platinum-carbon catalyst in the mixing barrel 32, and to determine whether the mixing barrel 32 is almost full based on the weighing data. If the mixing tank 32 is nearly full, the crushing and screening mechanism 2 can be paused. Platinum-carbon catalyst particles of different sizes are then uniformly mixed within the mixing tank 32, and discharged into the receiving tank 4 via the discharge valve 321. The crushing and screening mechanism 2 can then be restarted. When weighing the platinum-carbon catalyst in the mixing tank 32, the height of the mixing tank 32 changes. The stirring component 33 is in elastic contact with the inner bottom of the mixing tank 32, maintaining the relative position of the stirring component 33 and the mixing tank 32, ensuring that the stirring component 33 always fully mixes the platinum-carbon catalyst particles within the mixing tank 32.

[0060] Reference Figure 1 and Figure 2The crushing and screening mechanism 2 also includes a vibration assembly 23, which includes a vibrating element 231 and a base 232. One end of the vibrating element 231 is movably mounted on the support 1, and the other end is connected to the base 232. The outer wall of the crushing barrel 21 is detachably connected to the base 232. The crushing assembly 22 is in elastic contact with the inner bottom of the crushing barrel 21.

[0061] Reference Figure 1 and Figure 2 In this embodiment, when the platinum-carbon catalyst particles are sieved through several sieve holes 210 in the crushing barrel 21, the vibrating element 231 is operated to make the crushing barrel 21 vibrate up and down, which facilitates the rapid sieving of the platinum-carbon catalyst particles. The crushing component 22 is in elastic contact with the inner bottom of the crushing barrel 21. When the crushing barrel 21 vibrates up and down, the crushing component 22 can always be pressed against the inner bottom of the crushing barrel 21, which helps to maintain the relative position of the crushing component 22 and the crushing barrel 21. This allows the crushing component 22 to always cooperate well with the crushing barrel 21, and the platinum-carbon catalyst can also be effectively crushed when the crushing barrel 21 vibrates.

[0062] Reference Figure 1 and Figure 2 The crushing assembly 22 includes a lid 221, a first spring rod 222, a first rotating shaft 223, blades 224, and a first motor 225. The lid 221 is vertically and flexibly mounted on the bracket 1 and is coaxial with the crushing barrel 21. The first spring rod 222 is coaxially disposed on the side of the lid 221 near the crushing barrel 21, with one end rotatably connected to the lid 221 and the other end connected to the first end of the first rotating shaft 223. The first motor 225 is disposed on the side of the lid 221 away from the crushing barrel 21 and is connected to the first spring rod 222 to drive the first spring rod 222 to rotate. The second end of the first rotating shaft 223 is in elastic contact with the inner bottom of the crushing barrel 21. The blades 224 are mounted on the side wall of the first rotating shaft 223.

[0063] Reference Figure 1 and Figure 2 In this embodiment, in the first state, the height of the lid 221 is lowered so that it covers the opening of the crushing barrel 21. Simultaneously, under the action of the first spring rod 222, the first rotating shaft 223 elastically contacts the inner bottom of the crushing barrel 21, facilitating the maintenance of the relative position between the blade 224 and the crushing barrel 21 during vibration. When crushing the platinum-carbon catalyst, the first motor 225 drives the first spring rod 222 to rotate, which in turn drives the first rotating shaft 223 to rotate. The first rotating shaft 223 then drives the blade 224 to rotate, crushing the platinum-carbon catalyst.

[0064] Reference Figure 1 and Figure 2The crushing and screening mechanism 2 also includes a guide pipe 24 and a limiting ring 25. The guide pipe 24 is located below the crushing barrel 21 and is vertically mounted on the support 1. The limiting ring 25 is coaxially mounted on the end of the guide pipe 24 near the crushing barrel 21, allowing the crushing barrel 21 to move into the limiting ring 25. The crushing barrel 21 is slidably connected to the limiting ring 25 along its axial direction. The mixing mechanism 3 is located directly below the guide pipe 24, and the stirring assembly 33 is located between the mixing barrel 32 and the guide pipe 24.

[0065] Reference Figure 1 and Figure 2 When the crushing barrel 21 is sieving the platinum-carbon catalyst particles, the particles tend to scatter and fall due to continuous vibration. During operation, the height of the crushing barrel 21 is lowered so that its bottom enters the feed pipe 24, ensuring that all the sieved platinum-carbon catalyst particles fall into the feed pipe 24 and are then directed out into the mixing barrel 32. When the crushing barrel 21 extends into the feed pipe 24, its lower end is fixed by a sliding connection with the limiting ring 25, preventing it from swinging and ensuring that its vertical vibration is not interfered with.

[0066] Reference Figure 1 and Figure 2 The mixing assembly 33 includes a driven gear ring 331, a second spring rod 333, a second rotating shaft 334, blades 335, a driving gear 336, and a second motor 337. The first end of the driven gear ring 331 is coaxially and rotatably mounted on the end of the guide pipe 24 away from the mixing tank 32. The second spring rod 333 is coaxially disposed inside the driven gear ring 331, and multiple connecting rods 332 connect the first end of the second spring rod 333 to the driven gear ring 331. The second rotating shaft 334 is disposed between the second spring rod 333 and the inner bottom of the mixing tank 32, and is coaxially connected to the second end of the second spring rod 333. Multiple blades 335 are spaced apart on the side wall of the second rotating shaft 334. The second motor 337 is disposed on the side of the mixing tank 32 and connected to the bracket 1. The driving gear 336 is mounted on the second motor 337 and meshes with the driven gear ring 331.

[0067] Reference Figure 1 and Figure 2The second motor 337 drives the drive gear 336 to rotate, which in turn drives the driven gear ring 331 to rotate. The driven gear ring 331 then drives the second spring rod 333 to rotate, which in turn drives the second rotating shaft 334 to rotate. The second rotating shaft 334 then drives the blades 335 to rotate. The blades 335 stir the platinum-carbon catalyst particles in the mixing tank 32, ensuring that the particles of different sizes are mixed evenly. The second spring rod 333 keeps the second rotating shaft 334 in elastic contact with the bottom of the mixing tank 32, maintaining the relative position between the blades 335 and the mixing tank 32, ensuring that the blades 335 can always fully mix the platinum-carbon catalyst particles in the mixing tank 32.

[0068] Reference Figure 1 and Figure 2 The mixing mechanism 3 also includes a sealing assembly 34, which includes a connecting ring 341 and a telescopic tube 342. The connecting ring 341 is mounted on the bracket 1, and its first end is coaxially and rotatably connected to the second end of the driven gear ring 331, forming a movable seal. The second end of the driven gear ring 331 and the connecting ring 341 are in a movable seal. The first end of the telescopic tube 342 is connected to the second end of the connecting ring 341, and the second end of the telescopic tube 342 is connected to the opening of the mixing tank 32.

[0069] Reference Figure 1 and Figure 2 In this embodiment, the first end of the driven gear ring 331 is movably sealed with the feed pipe 24, preventing platinum-carbon catalyst particles from spilling out between the first end of the driven gear ring 331 and the feed pipe 24. The second end of the driven gear ring 331 is also movably sealed with the connecting ring 341, preventing platinum-carbon catalyst particles from spilling out between the second end of the driven gear ring 331 and the connecting ring 341. The telescopic tube 342 prevents platinum-carbon catalyst particles from spilling out between the connecting ring 341 and the opening of the mixing tank 32, and the telescopic tube 342 can extend and retract to accommodate changes in the height of the mixing tank 32.

[0070] A catalyst preparation process, based on the catalyst preparation equipment described above, includes the following steps:

[0071] Platinum metal is loaded onto activated carbon to form a platinum-carbon catalyst.

[0072] The platinum-carbon catalyst was purified.

[0073] The purified platinum-carbon catalyst was dried.

[0074] The dried platinum-carbon catalyst is placed in the crushing barrel 21 and crushed using the crushing component 22 to obtain platinum-carbon catalyst particles at the bottom of the crushing barrel 21.

[0075] By employing the above technical solution, platinum metal is loaded onto activated carbon to form a platinum-carbon catalyst. The platinum-carbon catalyst is then purified and dried. The dried platinum-carbon catalyst is placed in a crushing chamber 21 and crushed using a crushing assembly 22 to obtain platinum-carbon catalyst particles at the bottom of the chamber. The crushing and sieving of the platinum-carbon catalyst are carried out simultaneously, resulting in high production efficiency. Furthermore, sieving reduces the average particle size of the finished platinum-carbon catalyst, which is beneficial for improving catalytic activity.

[0076] The implementation principle of the catalyst preparation equipment and preparation process in this application embodiment is as follows:

[0077] First, the crushing assembly 22 is placed in the second state, and the blocky platinum-carbon catalyst is placed into the crushing barrel 21. Then, the crushing assembly 22 is placed in the first state. The crushing assembly 22 is operated, and the first spring rod 222 is driven to rotate by the first motor 225. In turn, the first spring rod 222 drives the first rotating shaft 223 to rotate, and the first rotating shaft 223 drives the blade 224 to rotate, thus crushing the blocky platinum-carbon catalyst into particles.

[0078] During the crushing process of the platinum-carbon catalyst, the crushing barrel 21 can sieve the platinum-carbon catalyst particles through several sieve holes 210. Particles larger than the sieve holes 210 will remain in the crushing barrel 21 and continue to be crushed. Particles smaller than the sieve holes 210 will pass through the sieve holes 210 and fall down.

[0079] While the platinum-carbon catalyst particles are being sieved through several sieve holes 210 in the crushing barrel 21, the vibrating element 231 is activated, causing the crushing barrel 21 to vibrate up and down, allowing the platinum-carbon catalyst particles to pass through the sieve quickly. At the same time, under the action of the first spring rod 222, the first rotating shaft 223 can elastically contact the inner bottom of the crushing barrel 21, which facilitates maintaining the relative position between the blade 224 and the crushing barrel 21 when the crushing barrel 21 vibrates.

[0080] Particles smaller than the sieve aperture 210 are directed into the mixing tank 32 through the feed pipe 24. The second motor 337 drives the drive gear 336 to rotate, the drive gear 336 drives the driven gear ring 331 to rotate, the driven gear ring 331 drives the second spring rod 333 to rotate, the second spring rod 333 drives the second rotating shaft 334 to rotate, the second rotating shaft 334 drives the blades 335 to rotate, and the blades 335 stir the platinum-carbon catalyst particles in the mixing tank 32 to make the platinum-carbon catalyst particles of different sizes evenly mixed.

[0081] Weighing component 31 is used to weigh the platinum-carbon catalyst in mixing tank 32 and determine whether mixing tank 32 is nearly full based on the weighing data. If mixing tank 32 is nearly full, the crushing and screening mechanism 2 can be paused. Platinum-carbon catalyst particles of different sizes are then uniformly mixed within mixing tank 32, and the particles are discharged into receiving tank 4 via discharge valve 321 before the crushing and screening mechanism 2 is restarted. During weighing of the platinum-carbon catalyst in mixing tank 32, the height of mixing tank 32 changes. The stirring component 33 is in elastic contact with the inner bottom of mixing tank 32, maintaining the relative position of the stirring component 33 and mixing tank 32, ensuring that the stirring component 33 always fully stirs the platinum-carbon catalyst particles within mixing tank 32.

[0082] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0083] The above are all optional 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 catalyst preparation apparatus, characterized in that: It includes a support (1) and a crushing and screening mechanism (2). The crushing and screening mechanism (2) includes a crushing barrel (21) and a crushing component (22). The crushing barrel (21) is vertically mounted on the support (1). The bottom of the crushing barrel (21) is provided with a number of screen holes (210). The crushing component (22) is mounted on the bracket (1). The crushing component (22) has a first state and a second state. In the first state, the crushing component (22) is located inside the crushing barrel (21). In the second state, the crushing component (22) is located outside the crushing barrel (21). The crushing and screening mechanism (2) further includes a vibration assembly (23), which includes a vibrating element (231) and a base (232). One end of the vibrating element (231) is vertically mounted on the support (1), and the other end is connected to the base (232). The outer wall of the crushing barrel (21) is detachably connected to the base (232). The crushing component (22) is in elastic contact with the inner bottom of the crushing barrel (21); The crushing assembly (22) includes a barrel cover (221), a first spring rod (222), a first rotating shaft (223), and a blade (224). The barrel cover (221) is vertically mounted on the bracket (1) and is coaxial with the crushing barrel (21). The first spring rod (222) is coaxially disposed on the side of the barrel cover (221) near the crushing barrel (21), and one end is rotatably connected to the barrel cover (221), and the other end is connected to the first end of the first rotating shaft (223); The second end of the first rotating shaft (223) is in elastic contact with the inner bottom of the crushing barrel (21); The blade (224) is mounted on the side wall of the first rotating shaft (223).

2. The catalyst preparation equipment according to claim 1, characterized in that: The crushing and screening mechanism (2) also includes a guide pipe (24), which is located below the crushing barrel (21) and is vertically installed on the support (1); The crushing barrel (21) can move into the feed pipe (24).

3. The catalyst preparation equipment according to claim 2, characterized in that: The crushing and screening mechanism (2) also includes a limiting ring (25), which is coaxially installed at one end of the guide pipe (24) near the crushing barrel (21), and the crushing barrel (21) can move into the limiting ring (25); In the axial direction of the limiting ring (25), the crushing barrel (21) can be slidably connected to the limiting ring (25).

4. The catalyst preparation equipment according to claim 2, characterized in that: The catalyst preparation equipment also includes a mixing mechanism (3), which includes a weighing component (31), a mixing tank (32), and a stirring assembly (33). The mixing tank (32) is coaxially arranged below the feed pipe (24). One end of the weighing component (31) is connected to the support (1), and the other end is connected to the mixing tank (32); The stirring assembly (33) is located between the mixing tank (32) and the guide pipe (24). The stirring assembly (33) is mounted on the bracket (1) and is in elastic contact with the inner bottom of the mixing tank (32).

5. The catalyst preparation equipment according to claim 4, characterized in that: The stirring assembly (33) includes a driven gear ring (331), a second spring rod (333), a second rotating shaft (334), and blades (335). The first end of the driven gear ring (331) is coaxially and rotatably mounted on the end of the feed pipe (24) away from the mixing tank (32). The second spring rod (333) is coaxially disposed inside the driven gear ring (331), and a plurality of connecting rods (332) are connected between the first end of the second spring rod (333) and the driven gear ring (331). The second rotating shaft (334) is located between the second spring rod (333) and the inner bottom of the mixing barrel (32), and is coaxially connected to the second end of the second spring rod (333); Multiple blades (335) are spaced apart on the sidewall of the second rotating shaft (334).

6. The catalyst preparation equipment according to claim 5, characterized in that: The mixing mechanism (3) further includes a sealing assembly (34), which includes a connecting ring (341) and a telescopic tube (342). The connecting ring (341) is mounted on the bracket (1), and the first end of the connecting ring (341) is coaxially and rotatably connected to the second end of the driven gear ring (331). The first end of the driven gear ring (331) is movably sealed with the guide tube (24), and the second end of the driven gear ring (331) is movably sealed with the connecting ring (341); The first end of the telescopic tube (342) is connected to the second end of the connecting ring (341), and the second end of the telescopic tube (342) is connected to the opening of the mixing tank (32).

7. The catalyst preparation equipment according to claim 6, characterized in that: The mixing tank (32) is equipped with a discharge valve (321) at the bottom.

8. A catalyst preparation process, based on the catalyst preparation equipment according to any one of claims 1 to 7, characterized in that: Includes the following steps: Platinum metal is loaded onto activated carbon to form a platinum-carbon catalyst. The platinum-carbon catalyst was purified. The purified platinum-carbon catalyst was dried. The dried platinum-carbon catalyst is placed in the crushing barrel (21) and crushed using the crushing assembly (22) to obtain platinum-carbon catalyst particles at the bottom of the crushing barrel (21).

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