Efficient grinding equipment and grinding method for aluminum oxide powder preparation

Abstract

The invention relates to the field of grinding, and discloses efficient grinding equipment for aluminum oxide powder preparation and a grinding method.The grinding equipment comprises a grinding support, a grinding mechanism is installed on the grinding support and comprises a grinding shell fixed to the grinding support, and the two ends of the grinding shell are each coaxially provided with a side cover; the end faces of the side covers coaxially extend to form connecting shafts, the connecting shafts are rotationally connected with the grinding support, an output nozzle is arranged at the highest point of the outer circle face of the grinding shell, the tail end of the output nozzle is connected with an output pipe, the opposite sides of the two side covers are each provided with a convex frame, and a grinding assembly is arranged between the two side covers. The grinding assembly comprises connecting parts arranged on the convex frame, a grinding shaft is arranged between the two connecting parts, the grinding shaft is movably sleeved with a grinding roller, the interior of the grinding roller is hollow, the part, located in the grinding roller, of the grinding shaft is provided with an eccentric wheel, the grinding roller is located in the grinding shell, and the two ends of the grinding roller make contact with the two side covers correspondingly.

Description

Technical Field

[0001] The invention relates to the field of grinding, and in particular to a high-efficiency grinding device and a grinding method for preparing aluminum oxide powder. Background Art

[0002] Alumina is an oxide of aluminum. In the ceramic industry, alumina powder is often used as one of the main components of ceramic materials and one of the raw materials used in the preparation of ceramic kilns.

[0003] The preparation process of alumina powder includes a crushing process for crushing alumina blocks into powder. Based on the search of crushing technology, a Chinese invention patent with an authorization announcement number of CN117380307B was found, which discloses a device and a method for preparing recycled aggregate from construction waste materials. The crushing head of the crushing unit cooperates with the impact component and the conduction component to achieve multiple rolling and hammering of concrete, and the rolling and hammering are carried out alternately, thereby achieving the crushing of concrete. However, this method has some shortcomings, for example: the crushing effect is achieved by rotating the crushing head around the main axis while moving downward, and the hammering effect is achieved by making the crushing unit have a movement of first rising and then lowering. As we all know, if the crushing head is accelerated The rotation speed can increase the crushing effect, but the hammering effect is determined by the lifting action of the crushing unit, and the lifting height of the crushing unit is constant. Therefore, the hammering effect cannot be enhanced and adjusted. Therefore, the crushing effect of the crushing structure of the existing patent technology needs to be improved and enhanced; when the crushing effect is improved by increasing the rotation speed of the crushing head, since the hammering action and the crushing action are driven by the same power source, and since the lifting action of the crushing unit is achieved by the cooperation of the roller and the linkage groove, and since the arc limit of the hammering section of the linkage groove, the rotation speed of the crushing head cannot be too fast, otherwise it is easy for the roller and the linkage groove to get stuck, that is, the crushing structure of the existing patent technology needs to be further improved to further improve the crushing effect.

[0004] Based on the above, the present invention proposes a highly efficient grinding device and a grinding method for alumina powder. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a high-efficiency grinding device and a grinding method for alumina powder.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A high-efficiency grinding device for making aluminum oxide powder comprises a grinding bracket, a grinding mechanism is installed on the grinding bracket, the grinding mechanism comprises a grinding shell fixedly arranged on the grinding bracket, the grinding shell is in the shape of a ring with the axis line arranged horizontally, a side cover is coaxially installed at each end of the grinding shell, a connecting shaft is coaxially extended from the end surface of the side cover, the connecting shaft is rotatably connected to the grinding bracket, an output nozzle is arranged at the highest point of the outer cylindrical surface of the grinding shell, and an output pipe is connected to the end of the output nozzle;

[0008] A cam is provided on each side of the two side covers opposite to each other, a grinding assembly is provided between the two side covers, the grinding assembly includes a connecting component provided on the cam, a grinding shaft is provided between the connecting components on the two cams, the axis line of the grinding shaft is parallel to the axis line of the grinding shell, a grinding roller is provided on the outer movable sleeve of the grinding shaft, the interior of the grinding roller is hollow and an eccentric wheel is provided on the part of the grinding shaft located inside the grinding roller, the grinding roller is located in the grinding shell, the two ends of the grinding roller are respectively in contact with the two side covers, and the side covers are provided with through holes for avoiding the grinding shaft.

[0009] Furthermore, a plurality of groups of grinding components are arranged in an array along the circumferential direction of the grinding shell.

[0010] Furthermore, a rotating ring coaxial with the side cover is arranged on the protruding frame, and the rotating ring is dynamically connected to a motor arranged on the grinding bracket.

[0011] Furthermore, the connecting shaft is in the shape of a hollow shaft, and a left air pipe is sleeved in one connecting shaft. One end of the left air pipe is connected to the air compressor, and the other end extends into the grinding shell and an air hole is provided at the lowest point of the outer cylindrical surface of the extended part. The end of the other connecting shaft is rotatably connected to a feed pipe, and the end of the feed pipe is connected to a feed hopper. A right air pipe is provided on the feed pipe, and one end of the right air pipe is connected to the air compressor, and the other end is connected to a connecting hole provided on the feed pipe.

[0012] Furthermore, the connecting component includes a connecting slide seat which is radially slidably arranged on the protrusion along the side cover, the end of the grinding shaft is rotationally connected with the connecting slide seat, a spring is arranged between the connecting slide seat and the protrusion, the elastic force of the spring is used to drive the connecting slide seat to move away from the axis line of the side cover, initially, under the elastic force of the spring, the grinding roller contacts the inner wall of the grinding shell, and an avoidance hole for avoiding the grinding shaft is arranged on the side cover, and the opening of the avoidance hole is blocked by the end of the grinding roller.

[0013] Furthermore, a driving bevel gear coaxial with the side cover is fixedly provided on the boss, and the connecting component also includes a first transmission shaft and a second transmission shaft installed on the boss and with an axial centerline parallel to the sliding direction of the connecting slide. The first transmission shaft is in the shape of a hollow shaft, and a driven bevel gear is provided at the input end of the first transmission shaft. The driven spur gear is meshed with the driving bevel gear, and the input end of the second transmission shaft is sleeved in the first transmission shaft through a connecting piece. When relative movement occurs between the first transmission shaft and the second transmission shaft, the first transmission shaft and the second transmission shaft maintain a power connection through the connecting piece, and a power connection is formed between the output end of the second transmission shaft and the grinding shaft.

[0014] Furthermore, the connecting member includes an internal spline arranged on the first transmission shaft and an external spline arranged on the second transmission shaft.

[0015] Furthermore, two connecting components corresponding to the active bevel gear are provided, a fixed shaft is sleeved in the connecting shaft corresponding to the left air pipe, the fixed shaft is connected to the grinding bracket, the left air pipe is sleeved in the fixed shaft, one active bevel gear is arranged on the fixed shaft, and the other active bevel gear is arranged on the feed pipe.

[0016] A grinding method for preparing an alumina powder system with high-efficiency grinding equipment:

[0017] Step 1: The alumina block enters the grinding shell through the feed hopper, the feed pipe, and the connecting shaft connected to the feed pipe. At the same time, the airflow output through the right air pipe assists the alumina block to enter the grinding shell;

[0018] Step 2: The side cover rotates. During the rotation, the side cover rotates with the grinding assembly. Under the cooperation of the active bevel gear and the driven bevel gear, the grinding shaft rotates. The grinding shaft rotates with the eccentric wheel. The eccentric wheel vibrates when it rotates, causing the grinding shaft, grinding roller and connecting slide to reciprocate along the radial direction of the side cover. When the grinding roller passes around the lowest point of the grinding shell, the grinding roller grinds the alumina block. The grinding includes the following parts: the grinding roller rotates around the axis of the grinding shell while rotating around its own axis to apply rolling to the alumina block; during the rolling process, the vibration of the grinding roller, the centrifugal force brought by the grinding roller following the rotation of the side cover, and the elastic potential energy of the spring drive the grinding roller to hammer the alumina block;

[0019] Step 3: While step 2 is occurring, the airflow output through the left air pipe is ejected downward, causing the alumina powder to fly. The airflow will eventually be output through the output pipe. The ground alumina powder will be pulled by the airflow and output with the airflow, while the unground alumina blocks cannot follow the airflow and remain in the grinding shell to continue grinding.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This solution can achieve non-stop and continuous grinding of alumina blocks to obtain alumina powder, with high preparation efficiency. On this basis:

[0022] 1. During the alumina grinding process, when the speed of the rotating ring is increased, the speed of the grinding roller rotating around the axis of the grinding shell is also increased, and the crushing effect can be significantly improved. At the same time, since the rotation of the eccentric wheel is achieved by the cooperation of the active bevel gear and the driven bevel gear, the number of revolutions of the eccentric wheel is fixed when the rotating ring rotates one circle. In other words, increasing the speed of the rotating ring will not affect the number of hammering times of the grinding roller on the alumina block, and since the speed is increased, the centrifugal force can be increased, and the vibration energy brought by the eccentric wheel is also increased, so the hammering effect can also be significantly improved. Therefore, compared with the existing patent literature mentioned in the background technology, this scheme is also driven by a single power source to achieve grinding and crushing action, and the grinding and crushing action also includes crushing and hammering. On this basis, this scheme can improve the crushing effect and hammering effect by increasing the speed, thereby improving the grinding and crushing effect and making it more flexible to use.

[0023] Second, during the screening process of alumina powder, airflow screening is adopted. Through the air holes arranged vertically downward, the airflow is blown toward the alumina being ground. The impact of the airflow can make the alumina powder that has been ground into powder in the alumina fly. The alumina powder that has been blown will be output outward along with the airflow. The alumina powder is collected at the end of the output pipe. For example, a collecting vessel is arranged at the end of the output pipe, and a plurality of filter holes are arranged on the surface of the collecting vessel to block the alumina powder.

[0024] The advantage of the airflow impacting the grinding aluminum oxide downward is that the aluminum oxide powder can be lifted up so that the ground aluminum oxide powder can be pulled away in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the grinding mechanism;

[0027] Figure 3 is a schematic diagram of two side covers and a grinding assembly;

[0028] Figure 4 Cross-section view of the side cover and grinding assembly Figure 1 ;

[0029] Figure 5 Cross-section view of the side cover and grinding assembly Figure 2 ;

[0030] Figure 6is a cross-sectional view of a side cover;

[0031] Figure 7 A schematic diagram of the grinding assembly.

[0032] The reference numerals in the accompanying drawings are:

[0033] 100, grinding mechanism; 101, grinding shell; 1011, output nozzle; 102, side cover; 1021, rotating ring; 1022, fixed shaft; 1023, avoidance hole; 103, grinding shaft; 104, grinding roller; 105, eccentric wheel; 106, connecting part; 1061, connecting slide; 1062, spring; 1063, first transmission shaft; 1064, second transmission shaft; 200, feed hopper; 201, feed pipe; 202, right air pipe; 203, motor; 204, output pipe; 205, left air pipe. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0035] Reference Figure 1-Figure 7 , a high-efficiency grinding device for making aluminum oxide powder, including a grinding bracket, on which a grinding mechanism 100 is installed.

[0036] The grinding mechanism 100 includes a grinding shell 101, which is in the shape of a circular ring with its axis arranged horizontally. A side cover 102 is coaxially installed at each end of the grinding shell 101, wherein the grinding shell 101 is fixedly connected to the grinding bracket and cannot move. A connecting shaft is coaxially extended from the end face of the side cover 102, and the connecting shaft is rotatably connected to the grinding bracket, for example, through a bearing, so that the side cover 102 can rotate. Furthermore, a cam is respectively provided on the opposite side of the two side covers 102, and a rotating ring 1021 coaxial with the side cover 102 is provided on the cam. A power connection is formed between the rotating ring 1021 and the motor 203, and the two side covers 102 can be driven to rotate synchronously by the motor 203. The motor 203 is arranged on the grinding bracket.

[0037] An output nozzle 1011 is provided at the highest point of the outer circumferential surface of the grinding shell 101, and an output pipe 204 is connected to the end of the output nozzle 1011. There are two side covers 102, so two connecting shafts are correspondingly provided. The connecting shafts are in the shape of hollow shafts. A left air pipe 205 is sleeved in one connecting shaft. One end of the left air pipe 205 is connected to a machine that can emit a high-pressure airflow, such as an air compressor or a blower. The other end of the left air pipe 205 extends into the grinding shell 101 and an air hole is provided at the lowest point of the outer circumferential surface of the extending part. The end of the other connecting shaft is rotatably connected to a feed pipe 201, and a feed hopper 200 is connected to the end of the feed pipe 201. A right air pipe 202 is provided on the feed pipe 201, and one end of the right air pipe 202 is connected to a machine that can emit a high-pressure airflow, such as an air compressor or a blower, and the other end of the right air pipe 202 is connected to a connecting hole provided on the feed pipe 201. The alumina blocks enter the grinding shell 101 through the feed hopper 200, the feed pipe 201, and the connecting shaft connected to the feed pipe 201. At the same time, the airflow output through the right air pipe 202 assists the alumina blocks to enter the grinding shell 101. The alumina blocks are ground into powder in the grinding shell 101. At the same time, the airflow output through the left air pipe 205 sprays downward, causing the alumina powder to fly. The airflow will eventually be output outward through the output pipe 204. Therefore, the alumina powder will be pulled by the airflow and output outward with the airflow, while the alumina that has not been ground into powder cannot follow the airflow flow and therefore remains in the grinding shell 101. Therefore, the present scheme can realize the continuous and non-intermittent preparation of alumina powder and can realize screening while grinding, so that the ground alumina powder can be output outward, while the unground alumina powder remains in the grinding shell 101 for further grinding.

[0038] Reference Figure 3-Figure 7 A grinding assembly is disposed between the two side covers 102 , and a plurality of groups of grinding assemblies are arranged in an array along the circumferential direction of the grinding shell 101 , and the attached drawing of this solution shows three groups.

[0039] The grinding assembly includes a connecting component 106 arranged on the protrusion, and two connecting components 106 are correspondingly arranged. A grinding shaft 103 is arranged between the two connecting components 106. The outer movable sleeve of the grinding shaft 103 is provided with a grinding roller 104. The interior of the grinding roller 104 is hollow and the part of the grinding shaft 103 located inside the grinding roller 104 is provided with an eccentric wheel 105. The grinding roller 104 is located in the grinding shell 101, and the two ends of the grinding roller 104 are respectively in contact with the two side covers 102, and the side covers 102 are provided with through holes for avoiding the grinding shaft 103.

[0040] The connecting component 106 includes a connecting slide 1061 which is radially slidably arranged on the protrusion along the side cover 102. The end of the grinding shaft 103 is rotationally connected with the connecting slide 1061, for example, through a bearing. A spring 1062 is arranged between the connecting slide 1061 and the protrusion. The elastic force of the spring 1062 is used to drive the connecting slide 1061 to move away from the axis of the side cover 102. Initially, under the elastic force of the spring 1062, the grinding roller 104 contacts the inner wall of the grinding shell 101. The side cover 102 is provided with an avoidance hole 1023 for avoiding the grinding shaft 103, and the length of the avoidance hole 1023 is smaller than the radius of the grinding roller 104. Therefore, the opening of the avoidance hole 1023 is blocked by the grinding roller 104.

[0041] A driving bevel gear coaxial with the side cover 102 is fixedly provided on the boss. Furthermore, two driving bevel gears are correspondingly provided. A fixed shaft 1022 is sleeved in the connecting shaft corresponding to the left air pipe 205. The fixed shaft 1022 is connected to the grinding bracket. The left air pipe 205 is sleeved in the fixed shaft 1022. One driving bevel gear is provided on the fixed shaft 1022, and the other driving bevel gear is directly provided on the feed pipe 201. Therefore, the driving bevel gear is stationary.

[0042] The connecting component 106 also includes a first transmission shaft 1063 and a second transmission shaft 1064 installed on the protrusion and with an axial centerline parallel to the sliding direction of the connecting slide 1061, wherein the first transmission shaft 1063 is in the shape of a hollow shaft, and a driven bevel gear is provided at the input end of the first transmission shaft 1063, and the driven spur gear is meshed with the active bevel gear. The input end of the second transmission shaft 1064 is sleeved in the first transmission shaft 1063 through a connecting piece. When relative movement occurs between the first transmission shaft 1063 and the second transmission shaft 1064, the first transmission shaft 1063 and the second transmission shaft 1064 maintain a power connection through the connecting piece, and a power connection is formed between the output end of the second transmission shaft 1064 and the grinding shaft 103. Furthermore, the connecting piece includes an internal spline arranged on the first transmission shaft 1063 and an external spline arranged on the second transmission shaft 1064.

[0043] A grinding method for preparing an alumina powder system with high-efficiency grinding equipment:

[0044] Step 1: The alumina block enters the grinding shell 101 through the feed hopper 200, the feed pipe 201, and the connecting shaft connected to the feed pipe 201. At the same time, the airflow output by the right air pipe 202 assists the alumina block to enter the grinding shell 101.

[0045] Step 2: The motor 203 drives the rotating ring 1021 to rotate, and the rotating ring 1021 rotates with the side cover 102. During the rotation:

[0046] a. The side cover 102 rotates with the grinding assembly. At the same time, with the cooperation of the active bevel gear and the driven bevel gear, the grinding shaft 103 rotates, and the grinding shaft 103 rotates with the eccentric wheel 105. The eccentric wheel 105 vibrates when rotating, so that the grinding shaft 103, the grinding roller 104 and the connecting slide 1061 reciprocate along the radial direction of the side cover 102. The faster the rotation speed of the side cover 102, the faster the rotation of the eccentric wheel 105, and the greater the energy brought by the vibration;

[0047] b. When the grinding roller 104 passes near the lowest point of the grinding shell 101, the grinding roller 104 will grind the alumina block. The grinding includes the following parts: 1. Since the grinding roller 104 is set on the grinding shaft 103 through a bearing, the grinding roller 104 will roll the alumina block when passing through it, similar to a roller; 2. The reciprocating movement of the grinding roller 104 will apply hammering to the alumina block during the rolling process. Specifically, the hammering includes the energy brought by the vibration of the eccentric wheel 105 causing the grinding roller 104 to move close to the axis of the side cover 102, the centrifugal force brought by the grinding roller 104 rotating with the side cover 102, and the elastic potential energy of the spring 1062;

[0048] Step 3: While step 2 is occurring, the airflow output through the left air pipe 205 is ejected downward, causing the aluminum oxide powder to fly. The airflow will eventually be output to the outside through the output pipe 204. Therefore, the aluminum oxide powder will be pulled by the airflow and output to the outside along with the airflow, while the aluminum oxide that has not been ground into powder cannot flow with the airflow and remains in the grinding shell 101 to continue to participate in grinding.

[0049] From the above, it can be seen that this scheme can achieve non-stop and continuous grinding of alumina blocks to obtain alumina powder, and the preparation efficiency is relatively high. On this basis:

[0050] 1. During the grinding process of step 2, when the speed of the rotating ring is increased, the speed of the grinding roller rotating around the axis of the grinding shell is also increased, and the crushing effect can be significantly improved. At the same time, since the rotation of the eccentric wheel is achieved by the cooperation of the active bevel gear and the driven bevel gear, the number of revolutions of the eccentric wheel is fixed when the rotating ring rotates one circle. In other words, increasing the speed of the rotating ring will not affect the number of hammering times of the grinding roller on the alumina block, and since the speed is increased, the centrifugal force can be increased, and the vibration energy brought by the eccentric wheel is also increased, so the hammering effect can also be significantly improved. Therefore, compared with the existing patent literature mentioned in the background technology, this scheme is also driven by a single power source to achieve grinding and crushing action, and the grinding and crushing action also includes rolling and hammering. On this basis, this scheme can improve the rolling effect and hammering effect by increasing the speed, thereby improving the grinding and crushing effect and making it more flexible to use.

[0051] 2. In the process of screening the alumina powder in step 3, airflow screening is adopted. Through the air holes arranged vertically downward, the airflow is blown toward the alumina being ground. The impact of the airflow can make the alumina powder that has been ground into powder in the alumina fly. The alumina powder that has been blown will be output outward along with the airflow. The alumina powder is collected at the end of the output pipe. For example, a collecting vessel is arranged at the end of the output pipe, and a plurality of filter holes are arranged on the surface of the collecting vessel to block the alumina powder.

[0052] The advantage of the airflow impacting the grinding aluminum oxide downward is that the aluminum oxide powder can be lifted up so that the ground aluminum oxide powder can be pulled away in time.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An efficient grinding device for preparing aluminum oxide powder, comprising a grinding bracket, on which a grinding mechanism (100) is mounted, characterized in that: The grinding mechanism (100) comprises a grinding shell (101) fixedly arranged on a grinding bracket, the grinding shell (101) is in the shape of a ring with its axis arranged horizontally, a side cover (102) is coaxially mounted on each of the two ends of the grinding shell (101), a connecting shaft coaxially extends from the end surface of the side cover (102), the connecting shaft is rotatably connected to the grinding bracket, an output nozzle (1011) is arranged at the highest point of the outer cylindrical surface of the grinding shell (101), and an output pipe (204) is connected to the end of the output nozzle (1011); A convex frame is respectively arranged on one side of the two side covers (102) facing away from each other, a grinding assembly is arranged between the two side covers (102), the grinding assembly comprises a connecting component (106) arranged on the convex frame, a grinding shaft (103) is arranged between the connecting components (106) on the two convex frames, the axis of the grinding shaft (103) is parallel to the axis of the grinding shell (101), a grinding roller (104) is arranged on the outer movable sleeve of the grinding shaft (103), the interior of the grinding roller (104) is hollow and an eccentric wheel (105) is arranged on the part of the grinding shaft (103) located inside the grinding roller (104), the grinding roller (104) is located inside the grinding shell (101), the two ends of the grinding roller (104) are respectively in contact with the two side covers (102), and a through hole for avoiding the grinding shaft (103) is arranged on the side cover (102).

2. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 1 is characterized in that: The grinding components are arranged in a plurality of groups in an array along the circumferential direction of the grinding shell (101).

3. The high-efficiency grinding equipment for alumina powder production according to claim 1 is characterized in that: A rotating ring (1021) coaxial with the side cover (102) is arranged on the convex frame, and the rotating ring (1021) is in power connection with a motor (203) arranged on the grinding bracket.

4. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 1, characterized in that: The connecting shaft is in the shape of a hollow shaft. A left air pipe (205) is sleeved in one connecting shaft. One end of the left air pipe (205) is connected to an air compressor, and the other end extends into the grinding shell (101). An air hole is provided at the lowest point of the outer circumferential surface of the extending part. The end of the other connecting shaft is rotatably connected to a feed pipe (201). The end of the feed pipe (201) is connected to a feed hopper (200). A right air pipe (202) is provided on the feed pipe (201). One end of the right air pipe (202) is connected to an air compressor, and the other end is connected to a connection hole provided on the feed pipe (201).

5. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 4, characterized in that: The connecting component (106) comprises a connecting slide (1061) which is radially slidably arranged on a convex frame along the side cover (102); the end of the grinding shaft (103) is rotatably connected to the connecting slide (1061); a spring (1062) is arranged between the connecting slide (1061) and the convex frame; the elastic force of the spring (1062) is used to drive the connecting slide (1061) to move away from the axis of the side cover (102); initially, under the elastic force of the spring (1062), the grinding roller (104) contacts the inner wall of the grinding shell (101); an avoidance hole (1023) for avoiding the grinding shaft (103) is arranged on the side cover (102), and the opening of the avoidance hole (1023) is blocked by the end of the grinding roller (104).

6. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 5, characterized in that: A driving bevel gear coaxial with the side cover (102) is fixedly arranged on the convex frame, and the connecting component (106) further comprises a first transmission shaft (1063) and a second transmission shaft (1064) which are mounted on the convex frame and whose axis lines are parallel to the sliding direction of the connecting slide (1061). The first transmission shaft (1063) is in the shape of a hollow shaft, and a driven bevel gear is arranged at the input end of the first transmission shaft (1063), and the driven spur gear is meshed with the driving bevel gear. The input end of the second transmission shaft (1064) is sleeved in the first transmission shaft (1063) through a connecting piece. When the first transmission shaft (1063) and the second transmission shaft (1064) move relative to each other, the first transmission shaft (1063) and the second transmission shaft (1064) are kept in power connection through the connecting piece, and a power connection is formed between the output end of the second transmission shaft (1064) and the grinding shaft (103).

7. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 6, characterized in that: The connecting member includes an internal spline arranged on the first transmission shaft (1063) and an external spline arranged on the second transmission shaft (1064).

8. The high-efficiency grinding equipment for preparing aluminum oxide powder according to claim 6, characterized in that: Two active bevel gears are provided corresponding to the connecting components (106); a fixed shaft (1022) is sleeved in the connecting shaft corresponding to the left air pipe (205); the fixed shaft (1022) is connected to the grinding bracket; the left air pipe (205) is sleeved in the fixed shaft (1022); one active bevel gear is provided on the fixed shaft (1022); and the other active bevel gear is provided on the feed pipe (201).

9. The grinding method of alumina powder for preparing a high-efficiency grinding device according to claim 8, characterized in that: The following steps are also included: Step 1: The alumina block enters the grinding shell (101) through the feed hopper (200), the feed pipe (201), and the connecting shaft connected to the feed pipe (201). At the same time, the airflow output through the right air pipe (202) assists the alumina block to enter the grinding shell (101); Step 2: The side cover (102) rotates. During the rotation process, the side cover (102) rotates with the grinding assembly. Under the cooperation of the active bevel gear and the driven bevel gear, the grinding shaft (103) rotates. The grinding shaft (103) rotates with the eccentric wheel (105). When the eccentric wheel (105) rotates, it vibrates, causing the grinding shaft (103), the grinding roller (104) and the connecting slide (1061) to reciprocate along the radial direction of the side cover (102). When the grinding roller (104) passes through the grinding outer When the aluminum oxide block is around the lowest point of the shell (101), the grinding roller (104) grinds the aluminum oxide block, and the grinding includes the following parts: the grinding roller (104) rotates around the axis of the grinding shell (101) while rotating around its own axis to apply rolling pressure to the aluminum oxide block; during the rolling process, the vibration of the grinding roller (104) and the centrifugal force brought by the grinding roller (104) following the rotation of the side cover (102) and the elastic potential energy of the spring (1062) drive the grinding roller (104) to hammer the aluminum oxide block; Step 3: While step 2 is occurring, the airflow output through the left air pipe (205) is ejected downward, causing the aluminum oxide powder to fly. The airflow will eventually be output to the outside through the output pipe (204). The ground aluminum oxide powder will be pulled by the airflow and output to the outside together with the airflow, while the unground aluminum oxide blocks cannot flow with the airflow and remain in the grinding shell (101) to continue to participate in grinding.

Images