Raw material grinding device for producing alumina powder

Abstract

The utility model relates to the technical field of aluminium oxide powder and disclose a raw material crushing and grinding device for aluminium oxide powder production, including support, the inside installation of support has the grinding box, the side surface fixed connection of grinding box has first mount, the upper portion of first mount is installed with the hopper through second mount, the upper portion mounting of hopper has the crushing mechanism, the upper portion of grinding box is installed with the apron in kind. The raw material crushing and grinding device for aluminium oxide powder production, through starting motor, motor drives the disc to rotate in the apron inside, drives the grinding roller to rotate in the grinding box inside, simultaneously, the third gear and the second gear are engaged with each other, namely, the third gear drives the grinding roller to rotate, up to the grinding roller rotates in the grinding box inside, drives raw materials to carry out grinding treatment, and the particle after grinding is discharged through the filter screen, ensures that the raw material is ground more finely, improves the grinding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of alumina powder technology, specifically to a raw material crushing and grinding device for alumina powder production. Background Technology

[0002] The alumina industry is a resource-, capital-, and technology-intensive raw material industry. Because the production process generates a large amount of tailings and red mud, it has a significant impact on the environment. As a non-renewable resource, the availability of bauxite directly restricts the total output and lifespan of the alumina industry in a region.

[0003] In the production of alumina powder, crushing and grinding devices are required to crush and grind alumina particles to ensure uniform particle size. However, during the grinding process, the pre-crushed particles are placed inside the grinding equipment, and the grinding device grinds the passing particles as it rotates. However, since the grinding surface of the grinding device is in single-sided contact, wear of the grinding part of the grinding device is likely to occur later, resulting in a larger gap in the grinding device and larger particle size after grinding, which affects the grinding efficiency of alumina powder. Therefore, we propose a raw material crushing and grinding device for alumina powder production. Utility Model Content

[0004] To address the shortcomings of existing raw material crushing and grinding devices for alumina powder production, this utility model provides a raw material crushing and grinding device for alumina powder production. This device features a grinding roller that grinds the product during rotation. Simultaneously, the grinding roller can rotate on its own axis, meaning that its circumference sequentially contacts and grinds the inner wall of the grinding chamber. This reduces damage to the grinding roller and ensures finer grinding, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a raw material crushing and grinding device for alumina powder production, including a support frame, a grinding box installed inside the support frame, a first mounting frame fixedly connected to the side of the grinding box, a funnel installed on the upper part of the first mounting frame via a second mounting frame, a crushing mechanism installed on the upper part of the funnel, a cover plate installed on the upper part of the grinding box, inlets for conveying materials fixedly connected to both sides of the upper part of the cover plate, a disc movably sleeved in the middle of the cover plate, a first gear fixedly connected to the upper part of the disc, a second gear fixedly connected inside the cover plate, a third gear movably sleeved on one side inside the disc, a rotating column fixedly connected to the lower end of the third gear, a grinding roller fixedly connected to the lower part of the rotating column, and a filter screen fixedly connected to the bottom of the grinding box.

[0006] Preferably, the crushing mechanism includes a crushing box and crushing rollers, with two sets of crushing rollers installed inside the crushing box, which is fixedly connected to the upper part of the funnel.

[0007] Preferably, the inside of the funnel is conical, and the lower part of the funnel is fixedly connected to a feed pipe that matches the feed inlet.

[0008] Preferably, a motor is installed on the upper part of the cover plate and on one side of the disk, and a gear is installed at one end of the output shaft of the motor, which meshes with the first gear.

[0009] Preferably, the upper part of the cover plate is fitted with an installation sleeve outside the first gear, the third gear is fitted on the lower end of the disk, and the second gear and the third gear are meshed with each other.

[0010] Preferably, the grinding roller is placed eccentrically inside the grinding box, and the grinding roller is attached to the inside of the grinding box.

[0011] Preferably, the funnel is located at the upper end of the grinding box, and a fastening bolt is installed between the first mounting bracket and the second mounting bracket.

[0012] Compared with existing raw material crushing and grinding devices for alumina powder production, this utility model has the following advantages:

[0013] 1. The raw material crushing and grinding device for alumina powder production, when the motor is started, drives the disc to rotate inside the cover plate, which in turn drives the grinding roller to rotate inside the grinding box. At the same time, the third gear meshes with the second gear, that is, the third gear drives the grinding roller to rotate. During the rotation of the grinding roller inside the grinding box, the raw material is ground. The ground particles are discharged through the filter screen, ensuring that the raw material is ground more finely and improving the grinding efficiency.

[0014] 2. The raw material crushing and grinding device for alumina powder production has a crushing box fixedly connected to the upper part of the funnel. The crushing box drives the raw material to crush. At the same time, the raw material after preliminary crushing is transported to the inside of the grinding box. The grinding roller rotates and grinds the raw material after preliminary crushing to ensure sufficient grinding of powder and ensure the fineness of the ground powder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0017] Figure 3 This is a schematic diagram of the side cross-sectional structure of the main body of this utility model;

[0018] Figure 4 This is a partially enlarged structural diagram of the grinding mechanism of this utility model;

[0019] Figure 5 This is a bottom view of the grinding device of this utility model;

[0020] Figure 6 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Support; 2. Grinding box; 3. First mounting frame; 4. Second mounting frame; 5. Funnel; 6. Crushing box; 7. Crushing roller; 8. Feed pipe; 9. Cover plate; 10. Feed inlet; 11. Disc; 12. First gear; 13. Motor; 14. Mounting sleeve; 15. Second gear; 16. Third gear; 17. Rotating column; 18. Grinding roller; 19. Filter screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A raw material crushing and grinding device for alumina powder production includes a support 1, a grinding box 2 installed inside the support 1 to increase the grinding space for alumina raw materials, a first mounting frame 3 fixedly connected to the side of the grinding box 2, a funnel 5 mounted on the upper part of the first mounting frame 3 via a second mounting frame 4, a crushing mechanism mounted on the upper part of the funnel 5, the crushing mechanism driving the initial crushing treatment, a cover plate 9 fitted on the upper part of the grinding box 2, the cover plate 9 limiting the position at the upper end of the grinding box 2, inlets 10 fixedly connected to both sides of the upper part of the cover plate 9 for conveying materials, a disc 11 movably sleeved in the middle of the cover plate 9, the upper part of the disc 11 fixedly connected to A first gear 12 is connected, and a motor 13 drives the first gear 12 to rotate, ensuring that the feed inlet 10 rotates inside the cover plate 9. A second gear 15 is fixedly connected inside the cover plate 9. A third gear 16 is movably sleeved on one side inside the disc 11. The second gear 15 and the third gear 16 mesh with each other. That is, when the disc 11 rotates, it drives the third gear 16 to rotate inside the grinding roller 18. A rotating column 17 is fixedly connected to the lower end of the third gear 16. A grinding roller 18 is fixedly connected to the lower part of the rotating column 17. When the grinding roller 18 rotates, it grinds the raw material inside the grinding box 2. A filter screen 19 is fixedly connected to the bottom of the grinding box 2.

[0024] Please see Figure 2 The crushing mechanism includes a crushing box 6 and crushing rollers 7. Two sets of crushing rollers 7 are installed inside the crushing box 6. The crushing box 6 is fixedly connected to the upper part of the funnel 5. The crushing box 6 is fixedly connected to the upper part of the funnel 5. After the alumina raw material is placed inside the crushing box 6, the alumina raw material comes into contact with the crushing rollers 7. When the two sets of crushing rollers 7 rotate, the crushing rollers 7 crush the alumina raw material. At the same time, the initially crushed alumina can slide down.

[0025] Please see Figure 2 The inside of the funnel 5 is conical. The lower part of the funnel 5 is fixedly connected to the feed pipe 8 that matches the feed port 10. The funnel 5 is set in the upper part of the grinding box 2. At the same time, the funnel 5 is adapted to the feed port 10 through the feed pipe 8. After the alumina raw material is crushed in the upper part of the funnel 5, the crushed alumina raw material is transported to the inside of the feed pipe 8 through the funnel 5. At the same time, the feed pipe 8 can be transported to the inside of the grinding box 2 through the feed port 10, ensuring sufficient alumina raw material is transported.

[0026] Please see Figure 4A motor 13 is installed on the upper part of the cover plate 9 and on one side of the disc 11. A gear is installed at one end of the output shaft of the motor 13. The gear meshes with the first gear 12. The disc 11 drives the first gear 12 installed on the upper part of the cover plate 9. When the motor 13 is started, the motor 13 meshes with the first gear 12. Then the disc 11 drives the grinding roller 18 to rotate. During the rotation of the grinding roller 18, the grinding roller 18 grinds the alumina raw material to ensure that the aluminum powder is ground more thoroughly and to ensure the fineness of the powder.

[0027] Please see Figure 6 The upper part of the cover plate 9 is fitted with a mounting sleeve 14 outside the first gear 12. The third gear 16 is fitted on the lower end of the disc 11. The second gear 15 and the third gear 16 are meshed with each other. The mounting sleeve 14 is fitted on the outside of the first gear 12. The mounting sleeve 14 limits the position of the first gear 12 at the upper end of the cover plate 9. At the same time, the third gear 16 is located on one side inside the disc 11, and the third gear 16 is meshed with the second gear 15. That is, when the disc 11 rotates, the disc 11 drives the third gear 16 and the second gear 15 to mesh. At the same time, the grinding roller 18 rotates. During the rotation process, the grinding roller 18 grinds the alumina raw material, improving the grinding efficiency.

[0028] Please see Figure 3 The grinding roller 18 is placed eccentrically inside the grinding box 2. The grinding roller 18 is attached to the inside of the grinding box 2. When the grinding roller 18 is placed eccentrically inside the grinding box 2, it drives the alumina raw material to be ground inside the grinding box 2, ensuring that the alumina raw material is ground more thoroughly. At the same time, the ground powder is discharged downward through the filter screen 19.

[0029] Please see Figure 1 The funnel 5 is located at the upper end of the grinding box 2. Fastening bolts are installed between the first mounting bracket 3 and the second mounting bracket 4. Through the fastening bolts installed between the first mounting bracket 3 and the second mounting bracket 4, the funnel 5 can be installed and disassembled at the upper part of the grinding box 2, which improves the convenience of equipment installation and disassembly.

[0030] Working principle: In use, the funnel 5 is placed on the upper part of the grinding box 2, and the first mounting frame 3 and the second mounting frame 4 are fixed to each other. At the same time, the alumina raw material is placed from the inside of the crushing box 6. The alumina raw material moves to the inside of the crushing roller 7. When the crushing roller 7 rotates, it drives the alumina raw material to undergo preliminary crushing. The preliminarily crushed alumina raw material slides into the inside of the funnel 5 and is transported to the inside of the grinding box 2 through the feed pipe 8. The motor 13 is started, and the motor 13 drives the disc 11 to rotate. The disc 11 drives the grinding roller 18 to move in a circle inside the grinding box 2. The second gear 15 and the third gear 16 mesh with each other, and then the grinding roller 18 rotates. Thus, the grinding roller 18 grinds the preliminarily crushed alumina raw material to ensure the fineness and efficiency of the alumina raw material particles.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material crushing and grinding device for alumina powder production, comprising a support (1), wherein a grinding box (2) is installed inside the support (1), a first mounting frame (3) is fixedly connected to the side of the grinding box (2), and a funnel (5) is mounted on the upper part of the first mounting frame (3) via a second mounting frame (4), characterized in that: The upper part of the funnel (5) is equipped with a crushing mechanism, and the upper part of the grinding box (2) is equipped with a cover plate (9). The upper two sides of the cover plate (9) are fixedly connected to the inlet (10) for conveying materials. The middle part of the cover plate (9) is movably fitted with a disc (11). The upper part of the disc (11) is fixedly connected with a first gear (12). The inside of the cover plate (9) is fixedly connected with a second gear (15). The inside of the disc (11) is movably fitted with a third gear (16). The lower end of the third gear (16) is fixedly connected with a rotating column (17). The lower part of the rotating column (17) is fixedly connected with a grinding roller (18). The bottom end of the grinding box (2) is fixedly connected with a filter screen (19).

2. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: The crushing mechanism includes a crushing box (6) and crushing rollers (7). Two sets of crushing rollers (7) are installed inside the crushing box (6). The crushing box (6) is fixedly connected to the upper part of the funnel (5).

3. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: The inside of the funnel (5) is conical, and the lower part of the funnel (5) is fixedly connected to an inlet pipe (8) that matches the inlet (10).

4. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: A motor (13) is installed on the upper part of the cover plate (9) and on one side of the disk (11). A gear is installed at one end of the output shaft of the motor (13), and the gear meshes with the first gear (12).

5. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: The upper part of the cover plate (9) is fitted with an installation sleeve (14) outside the first gear (12), the third gear (16) is fitted on the lower end of the disc (11), and the second gear (15) and the third gear (16) are meshed with each other.

6. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: The grinding roller (18) is placed eccentrically inside the grinding box (2), and the grinding roller (18) is attached to the inside of the grinding box (2).

7. The raw material crushing and grinding device for alumina powder production according to claim 1, characterized in that: The funnel (5) is located at the upper end of the grinding box (2), and fastening bolts are installed between the first mounting bracket (3) and the second mounting bracket (4).

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