Spiral vibration structure of aluminum hydroxide powder grinding device
By designing a spiral vibration structure, the grinding, sieving, and conveying of aluminum hydroxide powder grinding equipment are coordinated, solving the problems of bulky equipment structure and high energy consumption, reducing maintenance costs and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- RUZHOU TONGYUAN NEW MATERIAL CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-05-05
AI Technical Summary
In existing aluminum hydroxide powder grinding devices, sieving and grinding are driven independently, resulting in bulky equipment structure, high energy consumption, and high maintenance costs.
The structure employs a spiral vibration mechanism. By fixing a fixed block at the bottom of the screening frame and a semi-circular wedge block on the outer wall of the drive shaft, the vibration of the screening frame is achieved by the rotation of the drive shaft. The same drive shaft drives the grinding disc and the spiral auger to rotate, realizing the coordinated operation of grinding, screening and conveying, and reducing the use of independent vibration motors.
This results in a compact equipment structure, low energy consumption, reduced operating costs, improved grinding uniformity and screening efficiency, and reduced maintenance difficulty.
Smart Images
Figure CN121972258A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of grinding equipment technology, specifically to the spiral vibration structure of an aluminum hydroxide powder grinding device. Background Technology
[0002] Aluminum hydroxide powder is widely used in flame retardant materials, ceramic fillers, catalyst carriers and other fields. Its particle size distribution and powder purity have an important impact on the performance of downstream products. In the production process of aluminum hydroxide powder, grinding and sieving are key processes. Usually, the ground powder needs to be sieved to obtain the finished product that meets the particle size requirements.
[0003] Common aluminum hydroxide powder grinding devices typically include a grinding chamber, a grinding disc and a base plate set inside the grinding chamber, and a sieving mechanism set below the grinding chamber. The sieving mechanism often adopts the form of a vibrating screen, and its vibration source is usually an independently set vibrating motor or eccentric wheel exciter. The screen plate is driven by an independent power source to generate high-frequency vibration in order to achieve the classification and sieving of powder.
[0004] The existing grinding devices have a simple structure and are easy to implement, but they still have some drawbacks in actual use. For example, since grinding and screening use separate drive motors, the overall structure of the equipment is relatively bulky, the energy consumption is high, and the operating cost of the equipment is high. In addition, the existence of multiple power sources increases the number of equipment failure points, increases the difficulty and cost of later maintenance, and affects the user experience of the device. Summary of the Invention
[0005] The purpose of this invention is to provide a spiral vibration structure for an aluminum hydroxide powder grinding device, so as to solve the problems mentioned in the background art, such as the use of independent drive for sieving, which leads to high equipment operating costs and increased maintenance difficulty and cost.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a spiral vibration structure for an aluminum hydroxide powder grinding device, comprising a support, the support comprising a base plate, two columns fixedly connected to the top of the base plate, and two crossbeams fixedly connected between the two columns, a grinding barrel installed between the two columns, the grinding barrel containing a grinding component, a sieving component, and a spiral vibration component for vibrating the sieving component, the grinding component integrating a wall scraping component, and a drive component for driving the grinding component and the wall scraping component between the two crossbeams; The grinding assembly includes a chassis fixedly installed inside the grinding barrel, a fixing rod fixedly connected to the outer wall of the chassis, a grinding disc rotatably connected to the top of the chassis, and a drive shaft fixedly connected to the inner wall of the grinding disc. The end of the fixing rod away from the chassis is fixedly connected to the inner wall of the grinding barrel, and the drive shaft passes through the inner wall of the chassis and is rotatably connected to it. The screening assembly includes a screening frame slidably connected to the inner wall of the grinding barrel, a fixing plate fixedly connected to the inner wall of the screening frame, and an elastic telescopic cylinder fixedly installed between the fixing plate and the corresponding fixing rod. The drive shaft passes through the inner wall of the screening frame and is movably connected to it. The spiral vibration assembly includes a first fixed ring fixedly connected to the center of the bottom of the screening frame, a fixed block fixedly connected to the bottom of the first fixed ring, a second fixed ring fixedly sleeved on the outer wall of the drive shaft, a semi-circular wedge fixedly connected to the top of the second fixed ring, and a spiral auger fixedly connected to the bottom of the drive shaft. The bottom of the fixed block selectively contacts the top of the semi-circular wedge or the second fixed ring, and the inner wall of the first fixed ring is movably connected to the outer wall of the drive shaft.
[0007] Preferably, the elastic telescopic cylinder is an elastic telescopic structure, and its two ends are fixedly connected to the bottom of the fixed rod and the top of the fixed plate, respectively.
[0008] Preferably, the top of the semicircular wedge is provided with an inclined surface, which extends from low to high along the rotation direction of the semicircular wedge, and the end of the inclined surface is provided with a vertical surface.
[0009] Preferably, the scraper assembly includes a hollow shaft rotatably connected to the outer wall of the drive shaft, a scraper brush fixedly connected to the outer wall of the hollow shaft, an annular wall fixedly connected to the top of the grinding disc, and a material discharge groove opened inside the grinding disc, wherein the bottom of the scraper brush is in contact with the top of the grinding disc.
[0010] Preferably, the drive assembly includes a drive motor mounted on the top of the lower crossbeam, a first bevel gear fixedly connected to the output end of the drive motor, and a second bevel gear and a third bevel gear meshing with the tooth surface of the first bevel gear. The inner wall of the second bevel gear is fixedly connected to the outer wall of the drive shaft, and the inner wall of the third bevel gear is fixedly connected to the outer wall of the hollow shaft.
[0011] Preferably, the second bevel gear and the third bevel gear are oriented in opposite directions.
[0012] Preferably, bearings are installed at the corresponding drive shaft and hollow shaft of each of the two crossbeams, the outer rings of the two bearings are fixedly connected to the inner walls of the two crossbeams respectively, and the inner rings of the two bearings are fixedly connected to the outer walls of the corresponding drive shaft or hollow shaft respectively.
[0013] Preferably, there are multiple fixed rods and elastic telescopic cylinders, which are evenly distributed in a ring, and the number and position of the fixed rods and elastic telescopic cylinders correspond to each other.
[0014] Preferably, the grinding barrel is provided with a guide ramp on the inner wall below the screening frame, and a through groove is provided below the guide ramp, and the auger is rotatably installed on the inner wall of the through groove.
[0015] Preferably, the diameter of the base plate is the same as that of the grinding disc, and the diameter of the base plate is smaller than the inner diameter of the screening frame.
[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a spiral vibration assembly is set up, a fixed block is fixed at the bottom of the screening frame, and a semi-circular wedge is fixed on the outer wall of the drive shaft. The top of the semi-circular wedge has an inclined surface and a vertical surface. When the drive shaft rotates, the fixed block slides along the inclined surface to lift the screening frame and compress the elastic telescopic cylinder. When the fixed block slides to the vertical surface, it loses support, and the screening frame falls rapidly under the action of elastic force and gravity to generate vibration, thereby achieving efficient screening. At the same time, the drive shaft drives the grinding disc to rotate relative to the chassis for grinding, and drives the spiral auger to rotate to convey and discharge the screened material. The same drive shaft realizes the coordinated operation of grinding, screening, vibration and conveying, without the need for an independent vibration motor. The whole machine has a compact structure and low energy consumption. 2. In this invention, a drive motor and three bevel gears are set in the drive assembly to make the drive shaft and the hollow shaft rotate in opposite directions. The drive shaft drives the grinding disc to rotate, and the hollow shaft drives the scraper brush to rotate in opposite directions with the grinding disc. The material is swept into the discharge trough after being blocked by the ring wall and enters the grinding area in an orderly manner. The above structure drives the grinding assembly and the scraper assembly to run in opposite directions at the same time through a single drive motor, realizing the integration of grinding and discharge functions, effectively avoiding material accumulation and improving grinding uniformity. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the grinding assembly structure of the present invention; Figure 3 This is a schematic diagram of the screening component structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the grinding barrel of the present invention; Figure 5 This is a schematic diagram of the helical vibration assembly structure of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the screening frame of the present invention; Figure 7 This is a schematic diagram of the wall scraping assembly structure of the present invention; Figure 8 This is a schematic diagram of the drive component structure of the present invention.
[0018] In the diagram: 1. Support frame; 11. Base plate; 12. Column; 13. Crossbeam; 14. Bearing; 2. Grinding barrel; 21. Guide ramp; 22. Through groove; 3. Grinding assembly; 31. Chassis; 32. Fixing rod; 33. Grinding disc; 34. Drive shaft; 4. Screening assembly; 41. Screening frame; 42. Fixing plate; 43. Elastic telescopic cylinder; 5. Spiral vibration assembly; 51. First fixing ring; 52. Fixing block; 53. Second fixing ring; 54. Semi-circular wedge block; 55. Spiral auger; 6. Scraper assembly; 61. Hollow shaft; 62. Scraper brush; 63. Ring wall; 64. Material drop chute; 7. Drive assembly; 71. Drive motor; 72. First bevel gear; 73. Second bevel gear; 74. Third bevel gear. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Reference Figure 1-8 As shown, the spiral vibration structure of the aluminum hydroxide powder grinding device includes a support 1. The support 1 includes a base plate 11, two columns 12 fixedly connected to the top of the base plate 11, and two crossbeams 13 fixedly connected between the two columns 12. A grinding barrel 2 is installed between the two columns 12. The grinding barrel 2 is equipped with a grinding component 3, a sieving component 4, and a spiral vibration component 5 that vibrates the sieving component 4. The grinding component 3 integrates a wall scraping component 6. A drive component 7 is provided between the two crossbeams 13 to drive the grinding component 3 and the wall scraping component 6. Through the above structure, the support 1 provides a stable support foundation for the grinding barrel 2 and each component. The drive component 7 is installed between the crossbeams 13 to facilitate the centralized transmission of power to each moving part inside the grinding barrel 2. The grinding assembly 3 includes a base 31 fixedly installed inside the grinding barrel 2, a fixing rod 32 fixedly connected to the outer wall of the base 31, a grinding disc 33 rotatably connected to the top of the base 31, and a drive shaft 34 fixedly connected to the inner wall of the grinding disc 33. The end of the fixing rod 32 away from the base 31 is fixedly connected to the inner wall of the grinding barrel 2. The drive shaft 34 passes through the inner wall of the base 31 and is rotatably connected to it. When the drive shaft 34 rotates, the grinding disc 33 rotates synchronously with the drive shaft 34, forming a relative rotation with the fixed base 31, and grinding the aluminum hydroxide powder located between the grinding disc 33 and the base 31. The fixing rod 32 fixes the base 31 to the inner wall of the grinding barrel 2 to ensure the stability of the grinding gap. The screening assembly 4 includes a screening frame 41 slidably connected to the inner wall of the grinding barrel 2, a fixing plate 42 fixedly connected to the inner wall of the screening frame 41, and an elastic telescopic cylinder 43 fixedly installed between the fixing plate 42 and the corresponding fixing rod 32. The drive shaft 34 passes through the inner wall of the screening frame 41 and is movably connected to it. The screening frame 41 can slide up and down along the inner wall of the grinding barrel 2. The elastic telescopic cylinder 43 is compressed and provides a reset elastic force when the screening frame 41 moves up. When the screening frame 41 falls, it assists the frame to quickly reset. The fixing plate 42 provides a stable installation base for the elastic telescopic cylinder 43. The spiral vibration assembly 5 includes a first fixing ring 51 fixedly connected to the center of the bottom of the screening frame 41, a fixing block 52 fixedly connected to the bottom of the first fixing ring 51, a second fixing ring 53 fixedly sleeved on the outer wall of the drive shaft 34, a semi-circular wedge 54 fixedly connected to the top of the second fixing ring 53, and a spiral auger 55 fixedly connected to the bottom of the drive shaft 34. The bottom of the fixing block 52 selectively contacts the top of the semi-circular wedge 54 or the second fixing ring 53, and the inner wall of the first fixing ring 51 is in contact with the drive shaft 34. The outer wall of shaft 34 is movably connected. When the drive shaft 34 rotates, the second fixed ring 53 drives the semi-circular wedge block 54 to rotate synchronously. The fixed block 52 slides along the inclined surface of the semi-circular wedge block 54, so that the screening frame 41 is gradually lifted. When the fixed block 52 passes the highest point of the semi-circular wedge block 54, it falls rapidly under the action of the elastic force of the elastic telescopic cylinder 43 and the gravity of the screening frame 41 itself, thereby generating periodic vibration and realizing the screening of the material in the screening frame 41. The spiral auger 55 rotates with the drive shaft 34 and conveys the screened material downstream.
[0021] See Figure 3 The elastic telescopic cylinder 43 is an elastic telescopic structure. The two ends of the elastic telescopic cylinder 43 are fixedly connected to the bottom of the fixed rod 32 and the top of the fixed plate 42, respectively. The elastic telescopic structure stores elastic potential energy when the screening frame 41 is lifted, and quickly releases the elastic force after the fixed block 52 is separated from the support of the semi-circular wedge block 54, which helps the screening frame 41 to fall faster and enhance the vibration effect.
[0022] See Figures 5 to 6 The top of the semicircular wedge 54 is provided with an inclined surface, which extends from low to high along the rotation direction of the semicircular wedge 54. The end of the inclined surface is provided with a vertical surface. When the fixed block 52 slides from low to high along the inclined surface, the screening frame 41 is lifted smoothly. When the fixed block 52 slides to the vertical surface, the unsupported fixed block 52 falls rapidly along the vertical surface under the action of gravity and elasticity, forming an instantaneous impact drop. This structure converts the continuous rotational motion of the drive shaft 34 into the intermittent vibration of the screening frame 41, without the need for an additional vibrator.
[0023] See Figure 7The scraper assembly 6 includes a hollow shaft 61 rotatably connected to the outer wall of the drive shaft 34, a scraper brush 62 fixedly connected to the outer wall of the hollow shaft 61, an annular wall 63 fixedly connected to the top of the grinding disc 33, and a material drop trough 64 opened inside the grinding disc 33. The bottom of the scraper brush 62 is in contact with the top of the grinding disc 33. The hollow shaft 61 rotates independently relative to the drive shaft 34. The scraper brush 62 rotates with the hollow shaft 61, sweeping the material accumulated on the top of the grinding disc 33 toward the material drop trough 64. The annular wall 63 restricts the movement range of the material on the top of the grinding disc 33, prevents material splashing, and ensures that the material enters the material drop trough 64 in an orderly manner and falls into the grinding area between the base plate 31 and the grinding disc 33.
[0024] See Figure 8 The drive assembly 7 includes a drive motor 71 mounted on the top of the lower crossbeam 13, a first bevel gear 72 fixedly connected to the output end of the drive motor 71, and a second bevel gear 73 and a third bevel gear 74 meshing with the tooth surface of the first bevel gear 72. The inner wall of the second bevel gear 73 is fixedly connected to the outer wall of the drive shaft 34, and the inner wall of the third bevel gear 74 is fixedly connected to the outer wall of the hollow shaft 61. After the drive motor 71 is started, the first bevel gear 72 drives the second bevel gear 73 and the third bevel gear 74 to rotate synchronously in opposite directions, so that the drive shaft 34 and the hollow shaft 61 obtain rotational power in opposite directions, thereby realizing the coordinated operation of grinding and scraping actions.
[0025] See Figure 8 The second bevel gear 73 and the third bevel gear 74 are oriented in opposite directions. This arrangement ensures that the drive shaft 34 and the hollow shaft 61 rotate in opposite directions, so that the scraper brush 62 and the grinding disc 33 form relative motion, which improves scraping efficiency and prevents material from accumulating on the top of the grinding disc 33.
[0026] See Figure 8 Each of the two crossbeams 13 is equipped with a bearing 14 at the corresponding drive shaft 34 and hollow shaft 61. The outer rings of the two bearings 14 are fixedly connected to the inner walls of the two crossbeams 13, and the inner rings of the two bearings 14 are fixedly connected to the outer walls of the corresponding drive shaft 34 or hollow shaft 61. The bearings 14 provide radial support and axial positioning for the drive shaft 34 and hollow shaft 61, reduce rotational friction, and ensure the smooth operation of the drive shaft 34 and hollow shaft 61 under high-speed rotation.
[0027] See Figures 2-3 The fixed rods 32 and the elastic telescopic cylinders 43 are provided in multiples and are evenly distributed in a ring. The number and position of the fixed rods 32 and the elastic telescopic cylinders 43 are corresponding. The multiple evenly distributed elastic telescopic cylinders 43 make the screening frame 41 subjected to balanced force in all directions, avoid the screening frame 41 from tilting during the up and down vibration, and ensure that the screening frame 41 moves smoothly along the drive shaft 34 axis.
[0028] See Figure 4 The grinding barrel 2 is provided with a guide ramp 21 on the inner wall below the screening frame 41. A through groove 22 is opened below the guide ramp 21. The spiral auger 55 is rotatably installed on the inner wall of the through groove 22. The screened powder falls into the guide ramp 21 through the screening frame 41 and gathers at the through groove 22 along the guide ramp 21. The rotating spiral auger 55 continuously pushes the grinding barrel 2 out, realizing a seamless connection between screening and conveying.
[0029] See Figures 2-3 The diameter of the base 31 is the same as that of the grinding disc 33. The diameter of the base 31 is smaller than the inner diameter of the sieve frame 41. The fact that the diameters of the base 31 and the grinding disc 33 are the same ensures full coverage of the grinding area. The fact that the diameter of the base 31 is smaller than the inner diameter of the sieve frame 41 allows the ground powder to fall smoothly from the outside of the grinding disc 33 into the sieve frame 41, preventing the powder from accumulating at the edge of the base 31.
[0030] The working process of this invention is as follows: During operation, the aluminum hydroxide powder to be ground is put into the grinding barrel 2 and falls onto the top of the grinding disc 33. As the grinding disc 33 rotates with the drive shaft 34, the grinding disc 33 and the fixed base 31 rotate relative to each other, grinding the aluminum hydroxide powder that enters between the grinding disc 33 and the base 31. The ground powder falls from the peripheral gap between the grinding disc 33 and the base 31 and falls into the sieve frame 41 located below the base 31. When the drive shaft 34 rotates, the second fixing ring 53, which is fixedly sleeved on the outer wall of the drive shaft 34, drives the semi-circular wedge block 54 to rotate synchronously. The fixing block 52, which is fixedly connected to the bottom of the sieve frame 41, rotates along the top of the semi-circular wedge block 54. The inclined plane slides, causing the screening frame 41 to be gradually lifted, while compressing the elastic telescopic cylinder 43 fixedly connected between the fixed rod 32 and the fixed plate 42. When the fixed block 52 slides to the end of the inclined plane of the semi-circular wedge block 54, the fixed block 52 disengages from the support of the semi-circular wedge block 54. The screening frame 41 falls rapidly under the elastic force of the elastic telescopic cylinder 43 and its own gravity, generating periodic up-and-down vibrations, which efficiently screens the powder in the screening frame 41. The screened powder passes through the screening frame 41 and falls into the guide slope 21 at the bottom of the grinding barrel 2. It gathers along the guide slope 21 to the through groove 22, and is continuously pushed out of the grinding barrel 2 by the spiral auger 55 that rotates with the drive shaft 34, completing the powder conveying.
[0031] After the drive motor 71 of the drive assembly 7 starts, the first bevel gear 72, which is fixedly connected to the output end of the drive motor 71, rotates. At the same time, it meshes with and drives the second bevel gear 73 and the third bevel gear 74 to rotate in opposite directions. The second bevel gear 73 drives the drive shaft 34, which is fixedly connected to it, to rotate. The drive shaft 34 drives the grinding disc 33 to rotate synchronously. At the same time, the spiral auger 55 at the bottom end of the drive shaft 34 rotates accordingly. The third bevel gear 74 drives the hollow shaft 61, which is fixedly connected to it, to rotate. The hollow shaft 61 is sleeved on the outside of the drive shaft 34 and is connected to the drive shaft 34. The scraper brush 62, which is fixedly connected to the outer wall of the hollow shaft 61, rotates synchronously with the hollow shaft 61. The bottom of the scraper brush 62 is in contact with the top of the grinding disc 33, sweeping the material on the top of the grinding disc 33 toward the material drop trough 64 opened inside the grinding disc 33. The annular wall 63, which is fixedly connected to the top of the grinding disc 33, restricts the range of movement of the material on the top of the grinding disc 33, preventing the material from splashing. The material enters the material drop trough 64 in an orderly manner and falls into the grinding area between the base plate 31 and the grinding disc 33, effectively preventing the material from accumulating on the top of the grinding disc 33.
[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A spiral vibration structure for an aluminum hydroxide powder grinding device, comprising a support (1), the support (1) comprising a base plate (11), two columns (12) fixedly connected to the top of the base plate (11), and two crossbeams (13) fixedly connected between the two columns (12), wherein a grinding barrel (2) is installed between the two columns (12), characterized in that, The grinding barrel (2) is equipped with a grinding component (3), a sieving component (4), and a spiral vibration component (5) for vibrating the sieving component (4). The grinding component (3) is equipped with a wall scraping component (6). A drive component (7) for driving the grinding component (3) and the wall scraping component (6) is provided between the two crossbeams (13). The grinding assembly (3) includes a chassis (31) fixedly installed inside the grinding barrel (2), a fixing rod (32) fixedly connected to the outer wall of the chassis (31), a grinding disc (33) rotatably connected to the top of the chassis (31), and a drive shaft (34) fixedly connected to the inner wall of the grinding disc (33). The end of the fixing rod (32) away from the chassis (31) is fixedly connected to the inner wall of the grinding barrel (2), and the drive shaft (34) passes through the inner wall of the chassis (31) and is rotatably connected to it. The screening assembly (4) includes a screening frame (41) slidably connected to the inner wall of the grinding barrel (2), a fixing plate (42) fixedly connected to the inner wall of the screening frame (41), and an elastic telescopic cylinder (43) fixedly installed between the fixing plate (42) and the corresponding fixing rod (32). The drive shaft (34) passes through the inner wall of the screening frame (41) and is movably connected to it. The spiral vibration assembly (5) includes a first fixing ring (51) fixedly connected to the center of the bottom of the screening frame (41), a fixing block (52) fixedly connected to the bottom of the first fixing ring (51), a second fixing ring (53) fixedly sleeved on the outer wall of the drive shaft (34), a semi-circular wedge (54) fixedly connected to the top of the second fixing ring (53), and a spiral auger (55) fixedly connected to the bottom of the drive shaft (34). The bottom of the fixing block (52) selectively contacts the top of the semi-circular wedge (54) or the second fixing ring (53), and the inner wall of the first fixing ring (51) is movably connected to the outer wall of the drive shaft (34).
2. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The elastic telescopic cylinder (43) is an elastic telescopic structure, and the two ends of the elastic telescopic cylinder (43) are fixedly connected to the bottom of the fixed rod (32) and the top of the fixed plate (42) respectively.
3. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The top of the semicircular wedge (54) is provided with an inclined surface, which extends from low to high along the rotation direction of the semicircular wedge (54), and the end of the inclined surface is provided with a vertical surface.
4. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The scraper assembly (6) includes a hollow shaft (61) rotatably connected to the outer wall of the drive shaft (34), a scraper brush (62) fixedly connected to the outer wall of the hollow shaft (61), an annular wall (63) fixedly connected to the top of the grinding disc (33), and a material drop groove (64) opened inside the grinding disc (33). The bottom of the scraper brush (62) is in contact with the top of the grinding disc (33).
5. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The drive assembly (7) includes a drive motor (71) mounted on the top of the lower crossbeam (13), a first bevel gear (72) fixedly connected to the output end of the drive motor (71), and a second bevel gear (73) and a third bevel gear (74) meshing with the tooth surface of the first bevel gear (72). The inner wall of the second bevel gear (73) is fixedly connected to the outer wall of the drive shaft (34), and the inner wall of the third bevel gear (74) is fixedly connected to the outer wall of the hollow shaft (61).
6. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The second bevel gear (73) is oriented in the opposite direction to the third bevel gear (74).
7. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, Each of the two crossbeams (13) is equipped with a bearing (14) at the corresponding drive shaft (34) and hollow shaft (61). The outer rings of the two bearings (14) are fixedly connected to the inner walls of the two crossbeams (13), and the inner rings of the two bearings (14) are fixedly connected to the outer walls of the corresponding drive shaft (34) or hollow shaft (61).
8. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The number of fixed rods (32) and elastic telescopic cylinders (43) are both provided in multiples and are evenly distributed in a ring. The number and position of the fixed rods (32) and elastic telescopic cylinders (43) correspond to each other.
9. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The grinding barrel (2) is provided with a guide ramp (21) on the inner wall below the screening frame (41). A through groove (22) is provided below the guide ramp (21), and the spiral auger (55) is rotatably installed on the inner wall of the through groove (22).
10. The spiral vibration structure of the aluminum hydroxide powder grinding device according to claim 1, characterized in that, The diameter of the base (31) is the same as that of the grinding disc (33), and the diameter of the base (31) is smaller than the inner diameter of the screening frame (41).