Alumina ceramic preparation ball mill

Abstract

The application relates to an alumina ceramic preparation ball mill, and relates to the technical field of ball mills, which comprises a bottom plate, the top of the bottom plate is fixedly connected with two connecting plates, the opposite surfaces of the two connecting plates are fixedly connected with a conveying box and a box body, the conveying box is located at the lower part of the box body, grinding rollers are connected to the inner walls of the box body through rotating shafts, the other ends of the two grinding rollers are fixedly connected with gears through rotating shafts, the box body and the conveying box are integrated on the bottom plate, the double grinding rollers are arranged in meshing transmission in the box body, the grinding rollers are driven to rotate in cooperation with the second motor, the large or caked alumina raw materials entering the box body can be pre-broken, the raw materials are finely processed to a particle size suitable for subsequent ball milling, the additional energy consumption of the grinding medium in the ball milling stage for overcoming the hardness and inertia of the large particle raw materials is reduced from the source, and the problem that the grinding period is long due to the lack of pretreatment of the existing ball mill is solved.

Description

Technical Field

[0001] This application relates to ball mills, and more particularly to a ball mill for preparing alumina ceramics. Background Technology

[0002] Due to its high strength, high hardness, high temperature resistance, and excellent chemical stability, alumina ceramics are widely used in electronic components, mechanical parts, aerospace, and other fields. In its preparation process, the ball mill is the core equipment for refining and grinding alumina raw materials to obtain a uniform slurry. In the alumina ceramic production process, the ball mill needs to grind alumina block raw materials or coarse powder to a specific fineness to meet the requirements of subsequent molding and sintering processes for the dispersion and consistency of raw materials. Therefore, the grinding efficiency, energy consumption, and finished product quality of the ball mill directly affect the production efficiency and product performance of alumina ceramics.

[0003] Existing ball mills for alumina ceramic preparation lack pretreatment design for raw materials during the feeding stage. When processing alumina raw materials containing large pieces or lumps, the raw materials directly enter the grinding cylinder. Due to the high hardness of alumina itself, large pieces of raw materials require repeated impact and friction from the grinding media to be coarsely crushed. This not only requires the grinding media to consume additional energy to overcome the inertia and hardness of large particles, prolonging the overall grinding cycle, but also increases ineffective energy consumption due to the violent impact between large particles and the media.

[0004] To address the efficiency and energy consumption issues of existing ball mills due to the lack of raw material pretreatment, this application proposes a ball mill for alumina ceramic preparation. By simultaneously integrating a material conveying mechanism and a pre-crushing structure in the feeding process, large or agglomerated alumina raw materials are first pre-crushed to refine them to a suitable grinding particle size. Then, the pre-treated raw materials are fed into the grinding cylinder at a uniform speed and stably through the conveying mechanism. Utility Model Content

[0005] The purpose of this application is to provide a ball mill for the preparation of alumina ceramics, which has the advantages of short grinding cycle and solves the problems of low efficiency and high energy consumption caused by the lack of raw material pretreatment in ball mills.

[0006] The ball mill for preparing alumina ceramics provided in this application adopts the following technical solution: it includes a base plate, two connecting plates are fixedly connected to the top of the base plate, and a conveyor box and a housing are fixedly connected to the opposite sides of the two connecting plates. The conveyor box is located at the bottom of the housing. Grinding rollers are connected to both sides of the inner wall of the housing through rotating shafts. Gears are fixedly connected to the other ends of the two grinding rollers through rotating shafts. The two gears mesh with each other. A second motor is fixedly installed on one side of the housing. The other end of the output shaft of the second motor is fixedly connected to the other end of the grinding roller through a rotating shaft. A spiral feeding rod is rotatably connected to one side of the inner wall of the conveyor box through a rotating shaft. A third motor is fixedly connected to one side of the conveyor box. The other end of the output shaft of the third motor is fixedly connected to the other end of the spiral feeding rod through a rotating shaft. A conveying pipe is fixedly connected to the bottom of the conveyor box.

[0007] By adopting the above technical solution, by integrating the box and the conveyor box on the base plate, and setting up meshing transmission double grinding rollers in the box, and cooperating with the second motor to drive the grinding rollers to rotate, large or agglomerated alumina raw materials entering the box can be pre-crushed, and the raw materials can be refined to a particle size suitable for subsequent ball milling. This reduces the extra energy consumption of the grinding media in the ball milling stage to overcome the hardness and inertia of large raw materials from the source, and solves the problem of long grinding cycles caused by the lack of pretreatment in existing ball mills. At the same time, the spiral feed rod in the conveyor box, driven by the third motor, can uniformly and quantitatively convey the pre-crushed raw materials to the subsequent grinding structure.

[0008] Preferably, two first upright plates are fixedly connected to the top of the base plate, a conveying pipe is fixedly inserted through one side of the first upright plate, a tank is rotatably connected to the surface of the conveying pipe, and first transmission wheels are fixedly installed on the surface of the tank near both ends. A second upright plate is fixedly connected to the top of the base plate, and two second transmission wheels are rotatably connected to one side of the second upright plate via a rotating shaft. The two second transmission wheels mesh with two first transmission wheels. A first motor is fixedly installed on one side of the second upright plate, and the other end of the output shaft of the first motor is fixedly connected to one side of the second transmission wheel via a rotating shaft.

[0009] By adopting the above technical solution, the first motor and the second transmission wheel mesh with the first transmission wheel on the surface of the tank, which can drive the tank to rotate stably, so that the grinding media and raw materials inside the ball mill tank can be mixed and collide at high frequency.

[0010] Preferably, a feed pipe and a discharge pipe are fixedly connected to both ends of the tank body, a conveying pipe is connected to the feed pipe, and a ball mill jar is fixedly connected to the opposite ends of the feed pipe and the discharge pipe.

[0011] By adopting the above technical solution, the feed pipes at both ends of the tank are connected to the conveying pipes, and the pre-crushed raw materials enter the ball mill tank, avoiding the waste caused by the spillage of raw materials during the transmission process.

[0012] Preferably, a spiral tube is fixedly wound around the surface of the ball mill jar, with both ends of the spiral tube fixedly inserted through the outside of the jar body.

[0013] By adopting the above technical solution, the surrounding tubes wrapped around the surface of the ball mill can quickly remove heat by introducing coolant into the tubes. During the grinding process, the friction between the grinding media and the raw materials will generate heat. If the temperature is too high, it will easily cause the alumina raw materials to agglomerate.

[0014] Preferably, casters are fixedly connected to the bottom of the base plate near the four corners, and brake pads are installed inside the casters.

[0015] By adopting the above technical solution, the brake pads built into the caster wheel can stably fix it during operation, preventing the equipment from shifting due to vibrations caused by the rotation of the tank.

[0016] Preferably, a handle is fixedly connected to one side of the base plate, and an anti-slip sleeve is fixedly installed on the surface of the handle.

[0017] By adopting the above technical solution, the anti-slip sleeve on the handle surface can increase the friction between the hand and the handle, preventing the operator from losing control of the equipment due to slipping hands when pushing, thus improving the convenience and safety of operation.

[0018] Preferably, the ball mill jar is provided with a spiral protrusion tube, which is made of alumina ceramic.

[0019] By adopting the above technical solution, the spiral protrusion tube is made of alumina ceramic material. Alumina ceramic has high hardness and strong wear resistance, which can resist long-term friction between grinding media and raw materials and reduce the wear of the protrusion tube.

[0020] Preferably, a cavity is provided between the tank body and the ball mill jar, and a feed opening is provided on the top of the tank body.

[0021] By adopting the above technical solution, the cavity between the tank and the grinding jar can play a heat insulation role, which can reduce the heat transferred from the grinding jar to the tank body due to the heat generated during grinding, and prevent the tank body temperature from being too high and affecting the external components.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This ball mill for preparing alumina ceramics integrates a housing and a conveyor box on a base plate. Inside the housing, two meshing grinding rollers are installed, driven by a second motor. This allows for the pre-crushing of large or agglomerated alumina raw materials entering the housing, refining the material to a suitable particle size for subsequent ball milling. This reduces the extra energy consumption required for the grinding media to overcome the hardness and inertia of large particles during the ball milling stage, solving the problem of long grinding cycles caused by the lack of pretreatment in existing ball mills. Simultaneously, the spiral feed rod inside the conveyor box, driven by a third motor, can uniformly and quantitatively transport the pre-crushed raw material to the subsequent grinding structure. Attached Figure Description

[0023] Figure 1 This is a frontal three-dimensional structural diagram of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the tank in this application; Figure 3 This is a structural schematic diagram of the cross-section of the ball mill jar in this application; Figure 4 This is a front view structural diagram of the conveyor box in this application; Figure 5 This is a side view of the conveyor box in this application.

[0024] In the diagram: 1. Base plate; 2. Connecting plate; 3. First vertical plate; 4. Tank body; 5. First transmission wheel; 6. Second transmission wheel; 7. First motor; 8. Second vertical plate; 9. Conveying pipe; 10. Grinding jar; 11. Cavity; 12. Circulating pipe; 13. Discharge pipe; 14. Feed pipe; 15. Spiral protruding pipe; 16. Box body; 17. Second motor; 18. Grinding roller; 19. Conveying box; 20. Spiral feed rod; 21. Third motor; 22. Gear; 23. Anti-slip sleeve; 24. Handle; 25. Universal wheel; 26. Brake pad. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0026] Example 1: A ball mill for preparing alumina ceramics, referring to... Figure 1 , Figure 4 and Figure 5The system includes a base plate 1, with two connecting plates 2 fixedly connected to the top of the base plate 1. A conveyor box 19 and a housing 16 are fixedly connected to the opposite sides of the two connecting plates 2. The conveyor box 19 is located below the housing 16. Grinding rollers 18 are connected to both sides of the inner wall of the housing 16 via rotating shafts. Gears 22 are fixedly connected to the other ends of both grinding rollers 18 via rotating shafts, and the two gears 22 mesh with each other. A second motor 17 is fixedly installed on one side of the housing 16. The other end of the output shaft of the second motor 17 is fixedly connected to the other end of the grinding rollers 18 via a rotating shaft. A spiral feeding rod 20 is rotatably connected to one side of the inner wall of the conveyor box 19 via a rotating shaft. A third motor 21 is fixedly connected to one side of the conveyor box 19. The other end of the output shaft of the third motor 21 is connected to the other end of the spiral feeding rod 20 via a rotating shaft. The other end of the spiral feed rod 20 is fixedly connected, and the bottom of the conveying box 19 is fixedly connected to the conveying pipe 9. By integrating the box body 16 and the conveying box 19 on the base plate 1, and setting the meshing transmission double grinding rollers 18 in the box body 16, the grinding rollers 18 are driven to rotate by the second motor 17. This can pre-crush the large or agglomerated alumina raw materials entering the box body 16, refine the raw materials to a particle size suitable for subsequent ball milling, reduce the extra energy consumption of the grinding media to overcome the hardness and inertia of large raw materials in the ball milling stage from the source, and solve the problem of long grinding cycle caused by lack of pretreatment in existing ball mills. At the same time, the spiral feed rod 20 in the conveying box 19 can uniformly and quantitatively convey the pre-crushed raw materials to the subsequent grinding structure under the drive of the third motor 21.

[0027] Example 2: A ball mill for preparing alumina ceramics, referring to... Figure 1 , Figure 2 and Figure 3Two first vertical plates 3 are fixedly connected to the top of the base plate 1. A conveying pipe 9 is fixedly inserted through one side of the first vertical plate 3. A tank body 4 is rotatably connected to the surface of the conveying pipe 9. First transmission wheels 5 are fixedly installed on the surface of the tank body 4 near both ends. A second vertical plate 8 is fixedly connected to the top of the base plate 1. Two second transmission wheels 6 are rotatably connected to one side of the second vertical plate 8 via a rotating shaft. The two second transmission wheels 6 mesh with the two first transmission wheels 5. A first motor 7 is fixedly installed on one side of the second vertical plate 8. The other end of the output shaft of the first motor 7 is fixedly connected to one side of the second transmission wheels 6 via a rotating shaft. Through the meshing and transmission of the first motor 7, the second transmission wheels 6, and the first transmission wheels 5 on the surface of the tank body 4, the tank body 4 can be driven to rotate stably, so that the grinding inside the ball mill jar 10 can be... The grinding media and raw materials are mixed and collided at high frequency. The two ends of the tank body 4 are respectively fixedly connected to the feed pipe 14 and the discharge pipe 13. The conveying pipe 9 is connected to the feed pipe 14. The opposite ends of the feed pipe 14 and the discharge pipe 13 are fixedly connected to the ball mill jar 10. The feed pipe 14 at both ends of the tank body 4 is connected to the conveying pipe 9. The pre-crushed raw materials enter the ball mill jar 10 to avoid the raw materials from spilling and being wasted during the transmission process. The surface of the ball mill jar 10 is fixedly wrapped with a spiral tube 12. The two ends of the spiral tube 12 are respectively fixedly inserted through the outside of the tank body 4. The spiral tube 12 wrapped on the surface of the ball mill jar 10 can quickly remove heat by introducing coolant into the tube. During the grinding process, the friction between the media and the raw materials will generate heat. If the temperature is too high, it will easily cause the alumina raw materials to agglomerate. The spiral tube 12 can quickly remove the heat.

[0028] Example 3: A ball mill for preparing alumina ceramics, referring to... Figure 1 and Figure 3 The bottom of the base plate 1 is fixedly connected to four corners with casters 25. Each caster 25 has a brake pad 26 inside. The brake pad 26 inside the caster 25 can stably fix the equipment during operation, preventing displacement caused by vibration from the rotation of the tank 4. A handle 24 is fixedly connected to one side of the base plate 1. An anti-slip sleeve 23 is fixedly installed on the surface of the handle 24. The anti-slip sleeve 23 increases the friction between the hand and the handle 24, preventing the operator from slipping and losing control of the equipment, thus improving operational convenience and safety. The grinding jar 10 is equipped with a spiral protrusion tube 15, which is made of alumina ceramic. The spiral protrusion tube 15 is made of alumina ceramic, which has high hardness and strong wear resistance. It can resist long-term friction between the grinding media and the raw materials and reduce the wear of the protrusion tube. A cavity 11 is provided between the jar body 4 and the ball mill jar 10. The top of the box body 16 is provided with a feed opening. The cavity 11 between the jar body 4 and the ball mill jar 10 can play a heat insulation role, which can reduce the heat transferred from the ball mill jar 10 to the jar body 4 due to the heat generated during grinding and prevent the temperature of the jar body 4 from being too high and affecting the external components.

[0029] The implementation principle of this application embodiment is as follows: When using the ball mill for preparing alumina ceramics, the alumina block raw material or agglomerated coarse powder to be processed is put into the box 16 through the feed opening at the top of the box 16. The second motor 17 on one side of the box 16 is started. The output shaft of the second motor 17 drives one of the grinding rollers 18 connected to it to rotate through the rotating shaft. Since the gears 22 at the other end of the two grinding rollers 18 mesh with each other, the other grinding roller 18 will rotate synchronously in the opposite direction under the meshing transmission action. The two grinding rollers 18 pre-crush the large blocks or agglomerated alumina raw materials to a particle size suitable for subsequent ball milling through the squeezing and shearing force generated by the relative rotation of the two grinding rollers 18, thus completing the pre-treatment process of the raw materials and avoiding the large blocks of raw materials from directly entering the ball mill jar 10 and increasing the grinding load. The pre-crushed alumina raw materials will fall naturally into the conveying box 19 located at the bottom of the box 16 under the action of gravity. At this time, the third motor 21 on one side of the conveying box 19 is started. The output shaft of the third motor 21 drives the spiral feeding rod 20 in the conveying box 19 to rotate through the rotating shaft. During rotation, the screw feeder 20 pushes the pre-treated raw material conveying pipe 9 in the conveying box 19 in a certain direction. The raw material is stably conveyed through the conveying pipe 9 to the feed pipe 14 at one end of the tank body 4, and then enters the ball mill jar 10 inside the tank body 4 through the feed pipe 14. The first motor 7 on one side of the second vertical plate 8 is started. The output shaft of the first motor 7 drives the second transmission wheel 6 connected to it to rotate through the rotating shaft. Since the two second transmission wheels 6 mesh with the first transmission wheels 5 near both ends of the surface of the tank body 4, the tank body 4 begins to rotate stably around the axis of the conveying pipe 9 under the drive of the meshing transmission. The ball mill jar 10 inside the tank body 4 rotates synchronously with the tank body 4. When the ball mill jar 10 rotates, the grinding media inside collide and rub against the alumina raw material under the action of centrifugal force and gravity.

Claims

1. A ball mill for preparing alumina ceramics, comprising a base plate (1), characterized in that: Two connecting plates (2) are fixedly connected to the top of the base plate (1). The opposite sides of the two connecting plates (2) are fixedly connected to the conveying box (19) and the box body (16). The conveying box (19) is located at the bottom of the box body (16). Both sides of the inner wall of the box body (16) are connected to the grinding rollers (18) through the rotating pipe. The other ends of the two grinding rollers (18) are fixedly connected to the gears (22) through the rotating shaft. The two gears (22) mesh with each other. A second motor (17) is fixedly installed on one side of the box body (16). The other end of the output shaft of the second motor (17) is fixedly connected to the other end of the grinding roller (18) through the rotating shaft. A spiral feeding rod (20) is rotatably connected to one side of the inner wall of the conveying box (19) through the rotating shaft. A third motor (21) is fixedly connected to one side of the conveying box (19). The other end of the output shaft of the third motor (21) is fixedly connected to the other end of the spiral feeding rod (20) through the rotating shaft. A conveying pipe (9) is fixedly connected to the bottom of the conveying box (19).

2. The ball mill for preparing alumina ceramics according to claim 1, characterized in that: Two first vertical plates (3) are fixedly connected to the top of the base plate (1). A conveying pipe (9) is fixedly inserted through one side of the first vertical plate (3). A tank (4) is rotatably connected to the surface of the conveying pipe (9). First transmission wheels (5) are fixedly installed on the surface of the tank (4) near both ends. A second vertical plate (8) is fixedly connected to the top of the base plate (1). Two second transmission wheels (6) are rotatably connected to one side of the second vertical plate (8) through a rotating shaft. The two second transmission wheels (6) mesh with the two first transmission wheels (5). A first motor (7) is fixedly installed on one side of the second vertical plate (8). The other end of the output shaft of the first motor (7) is fixedly connected to one side of the second transmission wheel (6) through a rotating shaft.

3. The ball mill for preparing alumina ceramics according to claim 2, characterized in that: The two ends of the tank (4) are fixedly connected to the feed pipe (14) and the discharge pipe (13), respectively. The conveying pipe (9) is connected to the feed pipe (14), and the opposite ends of the feed pipe (14) and the discharge pipe (13) are fixedly connected to the ball mill jar (10).

4. The ball mill for preparing alumina ceramics according to claim 3, characterized in that: The surface of the ball mill jar (10) is fixedly wrapped with a spiral tube (12), and the two ends of the spiral tube (12) are respectively fixedly inserted through the outside of the jar body (4).

5. The ball mill for preparing alumina ceramics according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to the four corners with casters (25), and brake pads (26) are installed inside the casters (25).

6. The ball mill for preparing alumina ceramics according to claim 1, characterized in that: A handle (24) is fixedly connected to one side of the base plate (1), and an anti-slip sleeve (23) is fixedly installed on the surface of the handle (24).

7. The ball mill for preparing alumina ceramics according to claim 3, characterized in that: The ball mill jar (10) is equipped with a spiral protrusion tube (15), which is made of alumina ceramic.

8. The ball mill for preparing alumina ceramics according to claim 3, characterized in that: A cavity (11) is provided between the tank (4) and the ball mill jar (10), and a feed opening is provided on the top of the box (16).

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