Novel swing type planetary ball mill

Abstract

The utility model discloses a novel swing type planetary ball mill, which relates to the technical field of ball milling equipment and comprises a base, two swing support frames fixed at the top of the base, swing bearing seats fixed at the tops of the swing support frames, a swing frame rotatably connected between the two swing support frames through the swing bearing seats, and a swing arm mechanism arranged on the base. The swing arm mechanism comprises a speed reducer fixed to the base, a motor is installed at the input end of the speed reducer, a rotating wheel is fixed to an output shaft of the speed reducer, a swing arm is fixed to the shaft end of one end of the swing frame, and a connecting rod is rotationally connected between the rotating wheel and the swing frame. Reciprocating swing of the grinding tank can enlarge the coverage range of grinding balls in the tank, the phenomenon that materials on the inner edge or the bottom of the grinding tank are not fully ground in a traditional single rotation mode is reduced, an additional impact direction such as horizontal or vertical vibration can be introduced, energy input in unit time can be improved in combination with original planetary rotation, and the service life of the grinding tank is prolonged. And particularly, the crushing effect on tough materials is better.

Description

Technical Field

[0001] This utility model relates to the field of ball milling equipment technology, and in particular to a novel oscillating planetary ball mill. Background Technology

[0002] With the development of materials science, the requirements for fine processing are becoming increasingly stringent. These new nanoscale materials and processes are widely used in nanomaterial preparation, battery material development, ceramic material processing, chemistry and catalysis, pharmaceuticals and biology, and fine mineral processing, which has driven the application of ball mills. Most traditional ball mills suffer from low efficiency, agglomeration of ultrafine particles (such as nanopowders) due to high surface energy, and grinding dead zones. To address these problems, a novel oscillating planetary ball mill is disclosed, which can shorten grinding time by 10%–30%, while simultaneously reducing the average particle size of the final powder (e.g., refining from micrometers to submicrometers), reducing localized overheating and particle agglomeration, thereby improving powder uniformity (e.g., reducing the D90 / D10 ratio). The revolution, rotation, and oscillation motion of the planetary ball mill expand the coverage area of ​​the grinding balls within the jar, reducing the phenomenon of insufficient grinding of material at the edges or bottom of the jar in the traditional single-rotation mode. Utility Model Content

[0003] The purpose of this invention is to provide a novel oscillating planetary ball mill in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A novel oscillating planetary ball mill includes a base with casters mounted on the bottom. A housing is fixed on the base, and two oscillating support frames are fixed on the top of the base. Oscillating bearing seats are fixed on the top of the oscillating support frames, and an oscillating frame is rotatably connected between the two oscillating support frames through the oscillating bearing seats. A swing arm mechanism is provided on the base, and the swing arm mechanism includes a reducer fixed on the base. A motor is installed at the input end of the reducer, and a wheel is fixed on the output shaft of the reducer. An oscillating arm is fixed at the shaft end of one end of the oscillating frame, and a connecting rod is rotatably connected between the wheel and the oscillating frame. A planetary transmission mechanism and a main motor are provided on the oscillating frame. The planetary transmission mechanism includes a transmission component and a ball milling component. The transmission component is used to transmit the power of the main motor to the ball milling component.

[0006] Preferably, the ball mill assembly includes a main disc and a grinding jar holder. The main disc is rotatably connected to the swing frame via a main disc shaft, and the grinding jar holder is rotatably connected to the top of the main disc via a grinding jar shaft.

[0007] Preferably, the ball mill assembly further includes a positioning gear, an intermediate shaft gear, and a grinding jar shaft gear. The positioning gear is fixed to the swing frame via a main disc shaft bearing seat. The main disc shaft passes through the middle of the positioning gear and is connected to the main disc shaft bearing seat. The intermediate shaft gear meshes with the positioning gear and is rotatably connected to the bottom of the main disc. The grinding jar shaft gear meshes with the intermediate shaft gear and is fixedly connected to the bottom of the grinding jar shaft.

[0008] Preferably, the transmission assembly includes a motor drive wheel, a transmission belt, and a main disc shaft drive wheel. The motor drive wheel is fixedly connected to the output shaft of the main motor, and the main disc shaft drive wheel is fixedly connected to the bottom of the main disc shaft. The motor drive wheel and the main disc shaft drive wheel are connected and driven by the transmission belt.

[0009] Preferably, a shaft head is fixed on the circumference of the rotating wheel, a shaft head is fixed at the end of the swing arm away from the shaft end of the swing frame, and the two ends of the connecting rod are machined into bearing seats. The rotating wheel and the swing frame are rotatably connected to the two ends of the connecting rod respectively through the shaft head.

[0010] Preferably, the casing is equipped with a control panel, which includes a run button, an emergency stop button, a touch screen, and electrical control components.

[0011] The beneficial effects are as follows: the grinding jar generates three-dimensional motion through planetary motion of revolution and rotation, as well as back-and-forth oscillation, making the movement trajectory of the grinding jar, grinding balls, and material more complex. This increases the collision frequency of powder and energy transfer efficiency, reduces grinding dead zones, improves the grinding efficiency of the ball mill, and simultaneously reduces the average particle size of the final powder. The reciprocating oscillation of the grinding jar can expand the coverage area of ​​the grinding balls within the jar, reducing the phenomenon of insufficient grinding of material at the edges or bottom of the grinding jar in the traditional single rotation mode. It can also introduce additional impact directions, such as horizontal or vertical vibration. Combined with the original planetary rotation, it can increase the energy input per unit time, which is especially effective for crushing tough materials.

[0012] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a perspective view of the internal structure of a novel oscillating planetary ball mill as described in this utility model;

[0015] Figure 2 This is a perspective view of a novel oscillating planetary ball mill as described in this utility model;

[0016] Figure 3 This is a perspective view of the planetary transmission mechanism of a novel oscillating planetary ball mill described in this utility model;

[0017] Figure 4 This is a schematic diagram of the swing arm mechanism of a novel oscillating planetary ball mill described in this utility model.

[0018] The reference numerals in the attached diagram are explained as follows: 1. Caster; 2. Base; 3. Swing support frame; 4. Housing; 5. Swing frame; 6. Planetary transmission mechanism; 601. Motor transmission wheel; 602. Transmission belt; 603. Main disc shaft transmission wheel; 604. Positioning gear; 605. Intermediate shaft gear; 606. Grinding jar shaft gear; 607. Main disc; 608. Grinding jar base; 7. Main motor; 8. Swing bearing seat; 9. Connecting rod; 10. Rotary wheel; 11. Swing arm; 12. Reducer; 13. Control panel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figures 1-4As shown, a novel oscillating planetary ball mill includes a base 2 with four casters 1 mounted on the bottom for easy movement. A housing 4 is fixed to the base 2 with screws. Two oscillating support frames 3 are welded to the top of the base 2, and oscillating bearing seats 8 are fixed to the top of the oscillating support frames 3. An oscillating frame 5 is rotatably connected between the two oscillating support frames 3 through the oscillating bearing seats 8. A swing arm mechanism is provided on the base 2, which includes a reducer 12 fixed to the base 2. The reducer 12 is fixed to the base 2 through a reducer mounting seat, which is welded to the base 2. A motor is installed at the input end of the reducer 12, and a wheel 10 is fixed on the output shaft of the reducer 12. An oscillating arm 11 is fixed to the shaft end of one end of the oscillating frame 5. A connecting rod 9 is rotatably connected between the wheel 10 and the oscillating frame 5. A planetary transmission mechanism 6 and a main motor 7 are provided on the oscillating frame 5. The planetary transmission mechanism 6 includes a transmission component and a ball mill component. The transmission component is used to transmit the power of the main motor 7 to the ball mill component.

[0023] The ball mill assembly includes a main disc 607 and a grinding jar holder 608. The main disc 607 is rotatably connected to the swing frame 5 via a main disc shaft. The grinding jar holder 608 is rotatably connected to the top of the main disc 607 via a grinding jar shaft. The grinding jar is placed inside the grinding jar holder 608 and is fixed to the grinding jar holder 608 by a clamping device. The grinding jar contains grinding balls and materials to be ground.

[0024] The ball mill assembly also includes a positioning gear 604, an intermediate shaft gear 605, and a grinding jar shaft gear 606. The positioning gear 604 is fixed to the swing frame 5 via a main disc shaft bearing seat. The main disc shaft passes through the middle of the positioning gear 604 and is connected to the main disc shaft bearing seat. The intermediate shaft gear 605 meshes with the positioning gear 604 and is rotatably connected to the bottom of the main disc 607. The grinding jar shaft gear 606 meshes with the intermediate shaft gear 605 and is fixedly connected to the bottom of the grinding jar shaft. When the main disk 607 rotates with the main disk shaft, it causes the grinding jar base 608 and the intermediate shaft gear 605 to revolve. Since the intermediate shaft gear 605 meshes with the positioning gear 604, and the positioning gear 604 is fixed, the intermediate shaft gear 605 rotates around its own axis at a certain speed. At the same time, the intermediate shaft gear 605 rolls around the positioning gear 604 at a certain speed. The rotation of the intermediate shaft gear 605 drives the grinding jar shaft gear 606 to rotate, thereby causing the grinding jar inside the grinding jar base 608 to rotate and revolve.

[0025] The transmission assembly includes a motor drive wheel 601, a transmission belt 602, and a main disc shaft drive wheel 603. The motor drive wheel 601 is fixedly connected to the output shaft of the main motor 7, and the main disc shaft drive wheel 603 is fixedly connected to the bottom of the main disc shaft. The motor drive wheel 601 and the main disc shaft drive wheel 603 are connected and driven by the transmission belt 602. The main motor 7 drives the main disc 607 to rotate through the connection of the motor drive wheel 601, the transmission belt 602, and the main disc shaft drive wheel 603, thereby realizing the revolution of the grinding jar seat 608. The motor drive wheel 601 and the main disc shaft drive wheel 603 can be pulleys, in which case the transmission belt 602 is a belt. The motor drive wheel 601 and the main disc shaft drive wheel 603 can also be sprockets, in which case the transmission belt 602 is a sprocket. The selection can be made according to the actual situation and is not limited here.

[0026] A shaft head is welded on the circumference of the rotating wheel 10. A shaft head is welded to the end of the swing arm 11 away from the shaft end of the swing frame 5. The two ends of the connecting rod 9 are machined into bearing seats. The rotating wheel 10 and the swing frame 5 are rotatably connected to the two ends of the connecting rod 9 through the shaft head. The reducer 12 drives the rotating wheel 10 to rotate. Since the connecting rod 9 can rotate around the shaft head axis of the swing arm 11 and the rotating wheel 10 respectively, the rotating wheel 10 drives the connecting rod 9 to reciprocate. The reciprocating motion of the connecting rod 9 pushes the swing arm 11 to swing back and forth around the rotation axis of the swing frame 5. The swing arc of the swing arm 11 is from -50° to +50°, which can reduce the phenomenon that the material at the edge or bottom of the grinding jar is not fully ground.

[0027] The housing 4 is equipped with a control panel 13, which contains electrical components and control elements such as a run button, an emergency stop button, and a touch screen. This ensures the safe operation of the equipment and controls the necessary movements of the grinding jar, including revolution, rotation, and oscillation, through the electrical control system. This further improves grinding efficiency and quality, and enables real-time monitoring and protection of the entire machine's operating status.

[0028] Working Principle: On the control panel 13 of the housing 4, parameters are set via the touchscreen, and the main motor 7 is started. The main motor 7 rotates, driving the main disk 607 to rotate via the motor drive wheel 601, drive belt 602, and main disk shaft drive wheel 603 mounted on the main disk shaft. The rotation of the main disk 607 drives the grinding jar holder 608 mounted on the main disk 607 to rotate, thus causing the grinding jar inside the grinding jar holder 608 to rotate, achieving the revolution of the grinding jar. Due to the meshing of the intermediate shaft gear 605 with the grinding jar shaft gear 606 and the positioning gear 604, while the positioning gear 604 remains stationary, the intermediate shaft gear 605 rotates around its own axis at a certain speed and simultaneously rolls around the positioning gear 604 at a certain speed. The rotation of the intermediate shaft gear 605 drives the grinding jar holder 608 to rotate around its own axis at a certain speed. This causes the grinding jar inside the grinding jar holder 608 to revolve around the center at a certain speed and rotate on its own axis at a certain speed, achieving planetary transmission of the grinding jar.

[0029] On the control panel 13 of the housing 4, parameters are set via the touchscreen, and the reducer 12 is started. The reducer 12 drives the rotating wheel 10 to rotate. Since the connecting rod 9 can rotate around the shafts of the swing arm 11 and the rotating wheel 10 respectively, the rotation of the rotating wheel 10 drives the connecting rod 9 to reciprocate. The reciprocating motion of the connecting rod 9 pushes the swing arm 11 to swing back and forth around the rotation axis of the swing frame 5. This reduces the phenomenon of insufficient grinding of material at the edge or bottom of the grinding jar.

[0030] The grinding jar generates three-dimensional motion through planetary motion (revolution and rotation) and oscillation, making the trajectories of the jar, grinding balls, and material more complex (e.g., spiral, three-dimensional collision). This increases the collision frequency and energy transfer efficiency of the powder, reduces grinding dead zones, improves the grinding efficiency of the ball mill, and simultaneously reduces the average particle size of the final powder. Oscillation can expand the coverage area of ​​the grinding balls within the jar, reducing the phenomenon of insufficient grinding of material at the edges or bottom of the jar in the traditional single-rotation mode. It may also introduce additional impact directions (e.g., horizontal or vertical vibration), which, combined with the original planetary rotation, can increase the energy input per unit time, especially effective for crushing tough materials (e.g., polymers, metals). Existing research has shown that introducing three-dimensional vibration or oscillation (e.g., horizontal or vertical oscillation) into planetary ball mills can shorten grinding time by 10%-30% and reduce the average particle size of the final powder (e.g., from micrometer to submicrometer). The multi-directional shear force generated by oscillation may disrupt the van der Waals forces between nanoparticles, effectively reducing agglomeration caused by excessive surface energy.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A novel swing type planetary ball mill comprising a base (2) having caster wheels (1) mounted at the bottom thereof, a machine casing (4) fixed on the base (2), characterized in that: Two swing support frames (3) are fixed on the top of the base (2). A swing bearing seat (8) is fixed on the top of the swing support frame (3). A swing frame (5) is rotatably connected between the two swing support frames (3) through the swing bearing seat (8). A swing arm mechanism is provided on the base (2). The swing arm mechanism includes a reducer (12) fixed on the base (2). A motor is installed at the input end of the reducer (12). A wheel (10) is fixed on the output shaft of the reducer (12). A swing arm (11) is fixed at the shaft end of one end of the swing frame (5). A connecting rod (9) is rotatably connected between the wheel (10) and the swing frame (5). A planetary transmission mechanism (6) and a main motor (7) are provided on the swing frame (5). The planetary transmission mechanism (6) includes a transmission component and a ball mill component. The transmission component is used to transmit the power of the main motor (7) to the ball mill component.

2. A novel oscillating planetary ball mill as claimed in claim 1, wherein: The ball mill assembly includes a main disc (607) and a grinding pot base (608). The main disc (607) is rotatably connected to the swing frame (5) via a main disc shaft, and the grinding pot base (608) is rotatably connected to the top of the main disc (607) via a grinding pot shaft.

3. A novel oscillating planetary ball mill as claimed in claim 2, wherein: The ball mill assembly also includes a positioning gear (604), an intermediate shaft gear (605), and a grinding jar shaft gear (606). The positioning gear (604) is fixed to the swing frame (5) via a main disc shaft bearing seat. The main disc shaft passes through the middle of the positioning gear (604) and is connected to the main disc shaft bearing seat. The intermediate shaft gear (605) meshes with the positioning gear (604) and is rotatably connected to the bottom of the main disc (607). The grinding jar shaft gear (606) meshes with the intermediate shaft gear (605) and is fixedly connected to the bottom of the grinding jar shaft.

4. A novel oscillating planetary ball mill as claimed in claim 3, wherein: The transmission assembly includes a motor drive wheel (601), a transmission belt (602), and a main disc shaft drive wheel (603). The motor drive wheel (601) is fixedly connected to the output shaft of the main motor (7), and the main disc shaft drive wheel (603) is fixedly connected to the bottom of the main disc shaft. The motor drive wheel (601) and the main disc shaft drive wheel (603) are connected and driven by the transmission belt (602).

5. A novel oscillating planetary ball mill as claimed in claim 1, wherein: A shaft head is fixed on the circumference of the rotating wheel (10), and a shaft head is fixed at one end of the swing arm (11) away from the shaft end of the swing frame (5). The two ends of the connecting rod (9) are machined into bearing seats. The rotating wheel (10) and the swing frame (5) are rotatably connected to the two ends of the connecting rod (9) respectively through the shaft head.

6. A novel oscillating planetary ball mill as claimed in claim 1, wherein: The housing (4) is provided with a control panel (13), which has a run button, an emergency stop button, a touch screen, and electrical control components.

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