Raw material grinding device for catalyst preparation

Abstract

The utility model relates to the field of grinding devices, in particular to a raw material grinding device for catalyst preparation. The technical problems that according to an existing raw material grinding device for catalyst preparation, a grinding disc or a grinding ball is generally directly used for grinding raw materials, large-particle raw materials are difficult to grind, and consequently the grinding efficiency is reduced are solved, and compared with a traditional raw material grinding device for catalyst preparation, the raw material grinding device for catalyst preparation has the advantages that the grinding efficiency is high; comprising a workbench, an adjusting assembly, a smashing assembly, a grinding assembly, foot columns and suction cups, the smashing assembly is arranged to conduct smashing treatment on catalyst raw materials firstly, and large particles in the catalyst raw materials can be smashed into small particles, so that the smashed catalyst raw materials are more easily ground by the grinding assembly, and the grinding efficiency can be greatly improved; by arranging the adjusting assembly, the crushing assembly can be controlled to move and adjusted to different positions according to needs, and by arranging the grinding assembly, catalyst raw materials crushed by the crushing assembly can be ground.

Description

Technical Field

[0001] The utility model relates to the field of grinding devices, in particular to a raw material grinding device for catalyst preparation. Background Art

[0002] A catalyst generally refers to a substance that increases the reaction rate without changing the total standard Gibbs free energy change of the reaction. It can also be described as a substance that can increase the chemical reaction rate without changing the chemical equilibrium in a chemical reaction, and whose quality and chemical properties do not change before and after the chemical reaction. The raw materials for catalyst preparation include pure metals, metal oxides, kaolin, kerosene, etc. In order to increase the specific surface area of ​​the catalyst, evenly disperse the active components, remove surface defects, and prepare smaller catalyst particles, etc., it is usually necessary to grind the raw materials for catalyst preparation. A raw material grinding device for catalyst preparation is a raw material grinding equipment used in the catalyst preparation process. Existing raw material grinding devices for catalyst preparation usually directly use grinding discs or grinding balls to grind the raw materials. It is more difficult to grind larger particles of raw materials, resulting in a decrease in grinding efficiency. Utility Model Content

[0003] In order to overcome the existing raw material grinding devices for catalyst preparation, the raw materials are usually ground directly using grinding discs or grinding balls. It is more difficult to grind raw materials with larger particles, resulting in a decrease in grinding efficiency.

[0004] The technical solution of the utility model is: a raw material grinding device for catalyst preparation, including a workbench, an adjusting component, a crushing component, a grinding component, a foot column and a suction cup, two groups of grinding components for grinding the catalyst raw material crushed by the crushing component are symmetrically arranged in the middle of the upper end of the workbench, two groups of adjusting components for adjusting the position of the crushing component are symmetrically arranged on the upper side of the workbench, a crushing component for crushing the catalyst raw material is arranged between the two groups of adjusting components, and foot columns for support are arranged around the four corners of the lower end of the workbench, and the lower ends of the foot columns are provided with suction cups for increasing the support stability.

[0005] Preferably, by setting up a crushing component to first crush the catalyst raw material, larger particles in the catalyst raw material can be crushed into small particles, so that the crushed catalyst raw material is easier to be ground by the grinding component, which can greatly improve the grinding efficiency. By setting up an adjusting component, the crushing component can be controlled to move, so that the crushing component can be moved to different positions to introduce the crushed catalyst raw material into two groups of grinding boxes respectively, and can also be adjusted to a position that does not get in the way during the grinding process to avoid affecting the grinding. By setting up a grinding component, the catalyst raw material crushed by the crushing component can be ground. By symmetrically setting two groups of grinding components at the upper end of the workbench, the two groups of grinding components can be ground synchronously, thereby improving the grinding efficiency.

[0006] Preferably, the adjusting component includes a first telescopic cylinder, a first electric push rod, a second telescopic cylinder and a second electric push rod. The first electric push rod is symmetrically arranged in two groups. The lower ends of the two groups of first electric push rods are provided with a first telescopic cylinder for controlling the lifting and lowering of the first electric push rod. The upper ends of the first telescopic cylinders are provided with a second telescopic cylinder for controlling the movement of the second electric push rod. The ends of the two groups of second telescopic cylinders close to each other are provided with a second electric push rod for adjustment connection with the crushing component. By setting the first telescopic cylinder to control the first electric push rod to move up and down, the first electric push rod can control the crushing component to lift and lower to adjust its height. By setting the second telescopic cylinder to control the second electric push rod to move left and right, the second electric push rod can move left and right to enable the crushing component to introduce the crushed catalyst raw materials into the two groups of crushing boxes respectively.

[0007] Preferably, the crushing assembly includes a crushing box, a discharge hopper, a control valve, a pressure roller, a pressure block, a driving gear, a driven gear and a first drive motor. The interior of the crushing box is symmetrically provided with two groups of pressure rollers for crushing the catalyst raw material. The surface of the pressure roller is linearly distributed and surrounded by multiple groups of pressure blocks for crushing the catalyst raw material. Both ends of the pressure roller are provided with connecting shafts for rotationally connected to the crushing box. The connecting shaft at one end of the two groups of pressure rollers passes through the inner side of the crushing box and extends to the outer side, and is respectively connected to a driving gear and a driven gear for rotation. The driving gear and the driven gear are meshedly connected. By meshing the driving gear and the driven gear, the driving gear can drive the driven gear to rotate synchronously.

[0008] Preferably, a first driving motor for driving the driving gear to rotate is provided on the outer side of the driving gear. The first driving motor drives the driven gear to rotate synchronously by driving the driving gear to rotate. A discharge hopper for introducing the crushed catalyst raw material into the grinding assembly is provided at the lower end of the crushing box. A control valve for controlling the inlet and outlet is provided on the outer side of the discharge hopper. By setting the first driving motor, the driving gear can be driven to drive the driven gear to rotate, so that the two sets of pressure rollers rotate relative to each other under the drive of the driving gear and the driven gear. By setting a control valve on the outer side of the discharge hopper, the inlet and outlet of the catalyst raw material crushed by the pressure roller can be controlled to avoid leakage of the catalyst raw material during the process of the adjustment assembly controlling the movement of the crushing assembly.

[0009] Preferably, the grinding assembly includes a grinding box, a grinding roller, a first swing arm, a second swing arm, a second drive motor and an elastic leak-proof sleeve. The grinding box is provided with a grinding roller for grinding the crushed catalyst raw material. The bottom of the grinding box is provided with an arc groove for rolling the grinding roller. One end of the grinding roller is provided with a rotating shaft for rotation. The side of the grinding box close to the rotating shaft is provided with a slide groove for sliding the rotating shaft. By providing an arc groove at the bottom of the grinding box, the grinding roller is easier to roll. By providing the slide groove, the rotating shaft of the grinding roller can slide back and forth along the slide groove during the grinding process.

[0010] Preferably, the rotating shaft of the grinding roller extends through the slide groove to the outside of the grinding box and is rotatably connected to a first swing arm for driving the rotating shaft grinding roller to rotate; the end of the first swing arm away from the rotating shaft is rotatably connected to a second swing arm for controlling the rotation of the first swing arm; the inner side of the second swing arm is rotatably connected to the grinding box; a second drive motor for driving the second swing arm to rotate is provided on the outer side of the second swing arm; the second drive motor is arranged to drive the second swing arm to rotate, so that the second swing arm drives the first swing arm to rotate synchronously, so that the grinding roller, driven by the first swing arm and the second swing arm, rolls back and forth along the slide groove on the side of the grinding box to grind the catalyst raw material.

[0011] Preferably, the second driving motor drives the first swing arm to rotate synchronously by driving the second swing arm, and two groups of elastic leak-proof sleeves are symmetrically arranged on the outer side of the arc groove to prevent the catalyst raw materials from leaking out of the arc groove. By arranging an elastic leak-proof sleeve on the outer side of the slide groove on the side of the grinding box, the catalyst raw materials can be prevented from leaking out of the slide groove during the material guiding or grinding process.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the conventional raw material grinding device for catalyst preparation, which is usually more complicated in structure and usually directly grinds the raw material with a grinding disc or grinding balls, it is more difficult to grind raw materials with larger particles, resulting in a decrease in grinding efficiency. By setting a crushing component to first crush the catalyst raw material, the larger particles in the catalyst raw material can be crushed into small particles, so that the crushed catalyst raw material is easier to be ground by the grinding component, which can greatly improve the grinding efficiency. By setting a first driving motor, the driving gear can be driven to rotate, and then the driving gear drives the driven gear to rotate, so that the two sets of pressing rollers are driven by the driving gear and the driven gear to rotate relatively, and the catalyst raw material is squeezed into small particles by using the pressing blocks on the surface of the pressing rollers. The catalyst raw materials crushed into small particles are easier to be ground by the grinding assembly. The crushing assembly can be controlled to move by setting the adjusting assembly, so that the crushing assembly can be moved to different positions to introduce the crushed catalyst raw materials into the two groups of grinding boxes respectively, and can also be adjusted to a position that is not in the way during the grinding process to avoid affecting the grinding. The first telescopic cylinder can be controlled to move the first electric push rod up and down, so that the first electric push rod can control the crushing assembly to move up and down to adjust its height. The second telescopic cylinder can be controlled to move the second electric push rod left and right, so that the second electric push rod can move left and right to allow the crushing assembly to introduce the crushed catalyst raw materials into the two groups of crushing boxes respectively.

[0014] 2. The catalyst raw material crushed by the crushing assembly can be ground by setting a grinding assembly, and the second swing arm can be driven to rotate by setting a second driving motor, so that the second swing arm drives the first swing arm to rotate synchronously, so that the grinding roller is driven by the first swing arm and the second swing arm to roll back and forth along the chute on the side of the grinding box to grind the catalyst raw material. By providing an arc groove at the bottom of the grinding box, the grinding roller is easier to roll. By symmetrically arranging two groups of grinding assemblies at the upper end of the workbench, the two groups of grinding assemblies can be ground synchronously, thereby improving the grinding efficiency. By arranging a control valve on the outside of the discharge hopper, the catalyst raw material crushed by the pressure roller can be controlled to enter and exit, and the catalyst raw material can be prevented from leaking during the process of the adjustment assembly controlling the movement of the crushing assembly. By arranging an elastic leak-proof sleeve on the outside of the chute on the side of the grinding box, the catalyst raw material can be prevented from leaking out from the chute during the material guiding or grinding process. The elasticity of the elastic leak-proof sleeve allows it to follow the movement of the rotating shaft on the grinding roller for synchronous elastic deformation and rebound, so that the chute is always in a sealed state, so that the catalyst raw material is not easy to leak out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is an overall schematic diagram of a raw material grinding device for catalyst preparation of the utility model;

[0016] Figure 2 Shown is a schematic diagram of the regulating component in the raw material grinding device for catalyst preparation of the utility model;

[0017] Figure 3 Shown is a schematic diagram of a crushing component in a raw material grinding device for catalyst preparation of the utility model;

[0018] Figure 4 Shown is a schematic diagram of a grinding assembly in a raw material grinding device for catalyst preparation of the utility model;

[0019] Figure 5 Shown is a schematic diagram of a grinding box in a raw material grinding device for catalyst preparation of the utility model.

[0020] Explanation of the reference numerals: 1. workbench; 2. adjustment component; 3. crushing component; 4. grinding component; 5. foot column; 6. suction cup; 201. first telescopic cylinder; 202. first electric push rod; 203. second telescopic cylinder; 204. second electric push rod; 301. crushing box; 302. discharge hopper; 303. control valve; 304. pressure roller; 305. pressure block; 306. driving gear; 307. driven gear; 308. first drive motor; 401. grinding box; 402. grinding roller; 403. first swing arm; 404. second swing arm; 405. second drive motor; 406. elastic leak-proof sleeve; 407. slide groove; 408. arc groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figure 1 The utility model provides an embodiment: a raw material grinding device for catalyst preparation, comprising a workbench 1, an adjusting component 2, a crushing component 3, a grinding component 4, a foot column 5 and a suction cup 6, two groups of grinding components 4 for grinding the catalyst raw material crushed by the crushing component 3 are symmetrically arranged in the middle of the upper end of the workbench 1, two groups of adjusting components 2 for adjusting the position of the crushing component 3 are symmetrically arranged on the upper side of the workbench 1, a crushing component 3 for crushing the catalyst raw material is arranged between the two groups of adjusting components 2, and foot columns 5 for support are arranged around the four corners of the lower end of the workbench 1, and the lower ends of the foot columns 5 are provided with suction cups 6 for increasing the support stability.

[0023] See also Figure 2In this embodiment, the adjusting component 2 includes a first telescopic cylinder 201, a first electric push rod 202, a second telescopic cylinder 203 and a second electric push rod 204. The first electric push rod 202 is symmetrically arranged in two groups. The lower ends of the two groups of first electric push rods 202 are both provided with a first telescopic cylinder 201 for controlling the lifting and lowering of the first electric push rod 202. The upper end of the first telescopic cylinder 201 is provided with a second telescopic cylinder 203 for controlling the movement of the second electric push rod 204. The ends of the two groups of second telescopic cylinders 203 close to each other are provided with a second electric push rod 204 for adjusting and connecting with the crushing component 3. By setting the first telescopic cylinder 201 to control the first electric push rod 202 to move up and down, the first electric push rod 202 can control the crushing component 3 to move up and down to adjust its height. By setting the second telescopic cylinder 203 to control the second electric push rod 204 to move left and right, the second electric push rod 204 can move left and right to enable the crushing component 3 to introduce the crushed catalyst raw materials into the two groups of crushing boxes 301 respectively.

[0024] See also Figure 3 In this embodiment, the crushing assembly 3 includes a crushing box 301, a discharge hopper 302, a control valve 303, a pressure roller 304, a pressing block 305, a driving gear 306, a driven gear 307 and a first driving motor 308. The interior of the crushing box 301 is symmetrically provided with two groups of pressure rollers 304 for crushing the catalyst raw material. The surface of the pressure roller 304 is linearly distributed and surrounded by a plurality of groups of pressing blocks 305 for crushing the catalyst raw material. Both ends of the pressure roller 304 are provided with a connecting shaft for rotationally connecting with the crushing box 301. The connecting shaft at one end of the two groups of pressure rollers 304 passes through the inner side of the crushing box 301 and extends to the outer side, and is respectively connected with a driving gear 306 and a driven gear 307 for rotation. The driving gear 306 and the driven gear 307 are meshedly connected. By meshing the driving gear 306 and the driven gear 307, the driving gear 306 can drive the driven gear 307. The gear 307 rotates synchronously, and a first driving motor 308 for driving the driving gear 306 to rotate is provided on the outer side of the driving gear 306. The first driving motor 308 drives the driven gear 307 to rotate synchronously by driving the driving gear 306 to rotate. The lower end of the crushing box 301 is provided with a discharge hopper 302 for introducing the crushed catalyst raw material into the grinding component 4, and a control valve 303 for controlling the inlet and outlet is provided on the outer side of the discharge hopper 302. By setting the first driving motor 308, the driving gear 306 can be driven to drive the driven gear 307 to rotate, so that the two groups of pressure rollers 304 are driven by the driving gear 306 and the driven gear 307 to rotate relatively. By setting the control valve 303 on the outer side of the discharge hopper 302, the inlet and outlet of the catalyst raw material crushed by the pressure roller 304 can be controlled to avoid the catalyst raw material from leaking during the process of the adjustment component 2 controlling the movement of the crushing component 3.

[0025] See also Figure 4-5 In this embodiment, the grinding assembly 4 includes a grinding box 401, a grinding roller 402, a first swing arm 403, a second swing arm 404, a second drive motor 405 and an elastic leak-proof sleeve 406. The grinding box 401 is provided with a grinding roller 402 for grinding the crushed catalyst raw material. The bottom of the grinding box 401 is provided with an arc groove 408 for the grinding roller 402 to roll. One end of the grinding roller 402 is provided with a rotating shaft for rotation. The side of the grinding box 401 close to the rotating shaft is provided with a The slide groove 407 for the sliding of the rotating shaft is provided at the bottom of the grinding box 401 to make the grinding roller 402 easier to roll. By providing the slide groove 407, the rotating shaft of the grinding roller 402 can slide back and forth along the slide groove 407 during the grinding process. The rotating shaft of the grinding roller 402 passes through the slide groove 407 and extends to the outside of the grinding box 401 and is rotatably connected to a first swing arm 403 for driving the rotating shaft grinding roller 402 to rotate. The end of the first swing arm 403 away from the rotating shaft is rotatably connected to a control The first swing arm 403 rotates the second swing arm 404, the inner side of the second swing arm 404 is rotatably connected to the grinding box 401, and the outer side of the second swing arm 404 is provided with a second drive motor 405 for driving the second swing arm 404 to rotate. By setting the second drive motor 405 to drive the second swing arm 404 to rotate, the second swing arm 404 drives the first swing arm 403 to rotate synchronously, so that the grinding roller 402 is driven by the first swing arm 403 and the second swing arm 404 to rotate along the grinding box 401. The side chute 407 rolls back and forth to grind the catalyst raw material, and the second drive motor 405 drives the first swing arm 403 to rotate synchronously by driving the second swing arm 404. The outer side of the arc groove 408 is symmetrically provided with two groups of elastic leak-proof sleeves 406 for preventing the catalyst raw material from leaking out of the arc groove 408. By arranging the elastic leak-proof sleeve 406 on the outer side of the side chute 407 of the grinding box 401, it can prevent the catalyst raw material from leaking out of the chute 407 during the process of guiding or grinding.

[0026] When working, first check whether the control valve 303 outside the discharge hopper 302 is closed, and make sure that the catalyst raw material is poured into the crushing box 301 after the control valve 303 is closed;

[0027] Then, the catalyst raw material is preliminarily crushed by the crushing box 301, and the driving gear 306 is driven by the first driving motor 308 to rotate, so that the driving gear 306 drives the driven gear 307 to rotate, and then the two sets of pressing rollers 304 are driven by the driving gear 306 and the driven gear 307 to rotate relatively, and the catalyst raw material is squeezed into small particles by the pressing blocks 305 on the surface of the pressing rollers 304;

[0028] After the crushing is completed, the crushing assembly 3 is adjusted to the top of one group of grinding boxes 401 by the adjusting assembly 2, and adjusted to a suitable height. The second telescopic cylinder 203 is set to control the second electric push rod 204 to move left and right to adjust the crushing assembly 3 to the top of one group of grinding boxes 401, and then the first telescopic cylinder 201 controls the first electric push rod 202 to move up and down, so that the first electric push rod 202 controls the crushing assembly 3 to move up and down to adjust it to a suitable height;

[0029] Then, the control valve 303 outside the discharge hopper 302 is opened to pour an appropriate amount of the crushed catalyst raw material into the grinding box 401 directly below, and the above operation is repeated to pour an appropriate amount of the catalyst raw material crushed by the crushing assembly 3 into another set of grinding boxes 401;

[0030] Then, the catalyst raw material crushed by the crushing assembly 3 is ground by the grinding assembly 4, and the second swing arm 404 is driven to rotate by the second driving motor 405, so that the second swing arm 404 drives the first swing arm 403 to rotate synchronously, and then the grinding roller 402 is driven by the first swing arm 403 and the second swing arm 404 to roll back and forth along the slide groove 407 on the side of the grinding box 401 to grind the catalyst raw material;

[0031] Finally, after the grinding is completed, the ground catalyst raw materials in the two groups of grinding boxes 401 can be taken out for use.

[0032] Through the above steps, the staff first checks whether the control valve 303 on the outside of the discharge hopper 302 is closed, and after ensuring that the control valve 303 is closed, the catalyst raw material is poured into the crushing box 301, and then the catalyst raw material is preliminarily crushed through the crushing box 301, and the first driving motor 308 drives the driving gear 306 to rotate, so that the driving gear 306 drives the driven gear 307 to rotate, and then the two sets of pressing rollers 304 are driven by the driving gear 306 and the driven gear 307 to rotate relative to each other, and the pressing block 305 on the surface of the pressing roller 304 is used to squeeze the catalyst raw material into small particles. By setting the crushing component 3 to first crush the catalyst raw material, the larger particles in the catalyst raw material can be crushed into small particles. The crushed catalyst raw material is easier to be ground by the grinding assembly 4, which can greatly improve the grinding efficiency. After the crushing is completed, the crushing assembly 3 is adjusted to the top of one group of grinding boxes 401 through the adjustment assembly 2, and adjusted to a suitable height. The second telescopic cylinder 203 is set to control the second electric push rod 204 to move left and right to adjust the crushing assembly 3 to the top of one group of grinding boxes 401. Then, the first telescopic cylinder 201 controls the first electric push rod 202 to move up and down, so that the first electric push rod 202 controls the crushing assembly 3 to move up and down to adjust it to a suitable height. Then, the control valve 303 on the outer side of the discharge hopper 302 is opened to pour an appropriate amount of crushed catalyst raw materials into the grinding machine directly below. The above operation is repeated to pour an appropriate amount of catalyst raw material crushed by the crushing assembly 3 into the other group of grinding boxes 401. The crushing assembly 3 can be controlled to move by setting the adjustment assembly 2, so that the crushing assembly 3 can be moved to different positions to introduce the crushed catalyst raw material into the two groups of grinding boxes 401 respectively, and can also be adjusted to a position that does not get in the way during the grinding process to avoid affecting the grinding. Then, the grinding assembly 4 is used to grind the catalyst raw material crushed by the crushing assembly 3, and the second swing arm 404 is driven to rotate by the second drive motor 405, so that the second swing arm 404 drives the first swing arm 403 to rotate synchronously, thereby causing the grinding roller 402 to rotate between the first swing arm 403 and the second swing arm 4 04, it rolls back and forth along the slide groove 407 on the side of the grinding box 401 to grind the catalyst raw materials. Finally, after the grinding is completed, the ground catalyst raw materials in the two groups of grinding boxes 401 can be exported for use. By symmetrically arranging two groups of grinding components 4 on the upper end of the workbench 1, the two groups of grinding components 4 can be ground synchronously, thereby improving the grinding efficiency. By arranging a control valve 303 on the outside of the discharge hopper 302, the inlet and outlet of the catalyst raw materials crushed by the pressure roller 304 can be controlled to avoid the catalyst raw materials from leaking during the process of the adjustment component 2 controlling the movement of the crushing component 3. Under the mutual cooperation of the crushing component 3 and the grinding component 4, the grinding efficiency can be greatly improved, which is higher than the grinding efficiency of the traditional grinding device.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A raw material grinding device for catalyst preparation, comprising a workbench (1); characterized in that: The invention also comprises an adjustment component (2), a crushing component (3), a grinding component (4), a foot column (5) and a suction cup (6); two groups of grinding components (4) for grinding the catalyst raw material crushed by the crushing component (3) are symmetrically arranged at the middle of the upper end of the workbench (1); two groups of adjustment components (2) for adjusting the position of the crushing component (3) are symmetrically arranged on the upper side of the workbench (1); a crushing component (3) for crushing the catalyst raw material is arranged between the two groups of adjustment components (2); foot columns (5) for support are arranged around the four corners of the lower end of the workbench (1); and suction cups (6) for increasing the support stability are arranged at the lower ends of the foot columns (5).

2. A raw material grinding device for catalyst preparation according to claim 1, characterized in that: The adjustment component (2) comprises a first telescopic cylinder (201), a first electric push rod (202), a second telescopic cylinder (203) and a second electric push rod (204); the first electric push rod (202) is symmetrically provided in two groups; the lower ends of the two groups of first electric push rods (202) are provided with a first telescopic cylinder (201) for controlling the lifting and lowering of the first electric push rod (202); the upper ends of the first telescopic cylinder (201) are provided with a second telescopic cylinder (203) for controlling the movement of the second electric push rod (204); and the ends of the two groups of second telescopic cylinders (203) close to each other are provided with a second electric push rod (204) for adjusting and connecting with the crushing component (3).

3. A raw material grinding device for catalyst preparation according to claim 1, characterized in that: The crushing assembly (3) comprises a crushing box (301), a discharge hopper (302), a control valve (303), a pressure roller (304), a pressing block (305), a driving gear (306), a driven gear (307) and a first driving motor (308). Two groups of pressure rollers (304) for crushing the catalyst raw material are symmetrically arranged inside the crushing box (301). A plurality of groups of pressing blocks (305) for crushing the catalyst raw material are linearly distributed and arranged around the surface of the pressure roller (304). Both ends of the pressure roller (304) are provided with a connecting shaft for rotationally connecting with the crushing box (301). The connecting shaft at one end of the two groups of pressure rollers (304) passes through the inner side of the crushing box (301) and extends to the outer side and is respectively connected with a driving gear (306) and a driven gear (307) for rotation. The driving gear (306) and the driven gear (307) are meshingly connected.

4. A raw material grinding device for catalyst preparation according to claim 1, characterized in that: A first driving motor (308) for driving the driving gear (306) to rotate is provided on the outer side of the driving gear (306). The first driving motor (308) drives the driven gear (307) to rotate synchronously by driving the driving gear (306). A discharge hopper (302) for introducing the crushed catalyst raw material into the grinding assembly (4) is provided at the lower end of the crushing box (301). A control valve (303) for controlling the inlet and outlet is provided on the outer side of the discharge hopper (302).

5. The raw material grinding device for catalyst preparation according to claim 1, characterized in that: The grinding assembly (4) comprises a grinding box (401), a grinding roller (402), a first swing arm (403), a second swing arm (404), a second drive motor (405) and an elastic leak-proof sleeve (406); a grinding roller (402) for grinding the crushed catalyst raw material is arranged inside the grinding box (401); an arc groove (408) for the grinding roller (402) to roll is provided at the bottom of the grinding box (401); a rotating shaft for rotation is provided at one end of the grinding roller (402); and a sliding groove (407) for the rotating shaft to slide is provided on a side of the grinding box (401) close to the rotating shaft.

6. A raw material grinding device for catalyst preparation according to claim 5, characterized in that: The rotating shaft of the grinding roller (402) passes through the slide groove (407) and extends to the outside of the grinding box (401), and is rotatably connected to a first swing arm (403) for driving the rotating shaft grinding roller (402) to rotate; the end of the first swing arm (403) away from the rotating shaft is rotatably connected to a second swing arm (404) for controlling the rotation of the first swing arm (403); the inner side of the second swing arm (404) is rotatably connected to the grinding box (401); and the outer side of the second swing arm (404) is provided with a second drive motor (405) for driving the second swing arm (404) to rotate.

7. A raw material grinding device for catalyst preparation according to claim 6, characterized in that: The second driving motor (405) drives the second swing arm (404) to drive the first swing arm (403) to rotate synchronously. Two groups of elastic leak-proof sleeves (406) for preventing catalyst raw materials from leaking out of the arc-shaped groove (408) are symmetrically arranged on the outer side of the arc-shaped groove (408).

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