Ball mill with a classification screen mechanism

Abstract

The application discloses a ball mill with a hierarchical screening mechanism and relates to the technical field of ball milling equipment.The ball mill comprises a base and a control box, the control box is arranged on the front side of the base, a first fixing block is fixedly connected to the upper right side of the base, a second fixing block is fixedly connected to the upper left side of the base, a cylinder is arranged between the first fixing block and the second fixing block, a second rotating shaft and a first rotating shaft are fixedly connected to the left side and the right side of the cylinder respectively, the first rotating shaft is in bearing connection with the first fixing block, the second rotating shaft is in bearing connection with the second fixing block, and the first rotating shaft and the second rotating shaft are both hollow cylinders. Through the control of the control box, the ball mill can freely regulate and control a suitable crushing mode, adapt to different production requirements, produce products with better quality and more uniform particle size distribution, improve the crushing efficiency of the ball mill, reduce the energy consumption of the equipment, and achieve the effects of strong adaptability and strong regulation and control.

Description

Technical Field

[0001] This invention relates to the field of ball milling equipment technology, and more specifically, to a ball mill with a grading and screening mechanism. Background Technology

[0002] A ball mill is a widely used pulverizing equipment, mainly used for pulverizing, mixing and preparing materials. Its principle is to use the rotating cylinder and the grinding media (such as steel balls, steel rods or gravel) loaded inside to impact and rub the materials, thereby achieving the purpose of pulverizing or mixing. When the cylinder rotates, the grinding media are lifted to a certain height due to centrifugal force and friction and then fall, producing an impact and grinding effect on the materials.

[0003] Currently, ball mills on the market mainly consist of a cylinder, feeding device, discharging device, main bearing, transmission device, liner, grinding media, partition plate, and electrical control system. Among them, dry ball mills are mainly suitable for crushing dry materials.

[0004] During the crushing process, since the hardness of each material is different, the difficulty of crushing and the energy required are also different. Therefore, hard materials need to be coarsely ground to reduce their size, while softer materials can be directly finely ground. Coarse grinding requires processing on designated coarse grinding equipment, and fine grinding requires processing on designated fine grinding equipment. This operation involves many steps and is troublesome, wasting manpower and resources.

[0005] After the material is crushed, due to uneven crushing, particles of different sizes will be formed during coarse or fine grinding. In order to make the particle size meet specific standards, it is necessary to screen out particles of different sizes. In the current ball mill screening process, only one size of particle can be screened, and the size of the screened particles cannot be adjusted according to actual needs. Additional equipment is required for screening again, which reduces production efficiency and increases additional energy consumption and costs.

[0006] Therefore, it is necessary to design a ball mill that can intelligently switch between coarse grinding, fine grinding, and adjust the particle size of the screen. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a ball mill with a grading and screening mechanism.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A ball mill with a grading and screening mechanism, comprising a base and a control box, the control box being located at the front of the base; a first fixing block being fixedly connected to the upper right side of the base; a second fixing block being fixedly connected to the upper left side of the base; a cylindrical body being disposed between the first and second fixing blocks; a second rotating shaft and a first rotating shaft being fixedly connected to the left and right sides of the cylindrical body, respectively; the first rotating shaft being bearing-connected to the first fixing block; and the second rotating shaft being bearing-connected to the second fixing block; both the first and second rotating shafts are hollow cylinders; a second ball storage tank and a first ball storage tank are respectively disposed at the front and rear sides of the interior of the cylindrical body; both the first and second ball storage tanks extend into the interior of the cylindrical body; a first weight sensor is fixedly connected inside the side wall of the first ball storage tank; and a first electromagnet is fixedly connected inside the first ball storage tank; the first weight sensor detects… The measuring end is in contact with the first electromagnet. Several large iron balls are provided on one side of the first electromagnet. A second push rod is fixedly connected to the right side of the first ball storage tank. The output end of the second push rod passes through the side wall of the first ball storage tank and is fixedly connected to the first slider. A first rubber belt is fixedly connected to the right side of the first slider. The other end of the first rubber belt is fixedly connected to the inner right side wall of the first ball storage tank. A second weight sensor is fixedly connected inside the side wall of the second ball storage tank. A second electromagnet is fixedly connected inside the second ball storage tank. The measuring end of the second weight sensor is in contact with the second electromagnet. Several small iron balls are provided on one side of the second electromagnet. A third push rod is fixedly connected to the right side of the second ball storage tank. The output end of the third push rod passes through the side wall of the second ball storage tank and is fixedly connected to the second slider. A second rubber belt is fixedly connected to the right side of the second slider. The other end of the second rubber belt is fixedly connected to the inner right side wall of the second ball storage tank.

[0009] The present invention is further configured such that: a rotary motor is provided on the front side of the cylinder, the rotary motor is fixedly connected to the base, a rotating wheel is fixedly connected to the output end of the rotary motor, a rotating belt is provided on the outer side of the rotating wheel, and the rotating wheel is connected to the cylinder through the rotating belt.

[0010] By adopting the above technical solutions, the ball mill can freely adjust the appropriate grinding mode to adapt to different production needs, produce products with better quality and more uniform particle size distribution, improve the grinding efficiency of the ball mill, and reduce the energy consumption of the equipment, achieving the effect of strong adaptability and strong controllability.

[0011] The invention is further configured as follows: a first material pump is provided on the right side of the first fixed block, the input end of the first material pump is fixedly connected to a first rotating shaft, and a second material passage pipe is fixedly connected to the output end of the first material pump; a second material pump is provided on the left side of the second fixed block, the input end of the second material pump is fixedly connected to a second rotating shaft, and a weighing box is fixedly connected to the output end of the second material pump on the rear side of the cylinder; the weighing box is fixedly connected to a base; a positioning plate is fixedly connected to the upper left side of the weighing box; a first push rod is fixedly connected to the upper side of the positioning plate; a vibration motor is fixedly connected to the upper right side of the weighing box; a screening box is fixedly connected to the output end of the vibration motor; a fixed plate is fixedly connected to the lower side of the screening box; a sliding plate is provided on the upper side of the fixed plate; the sliding plate is fixedly connected to the output end of the first push rod; and the sliding plate is slidably connected to the inner wall of the weighing box.

[0012] By adopting the above technical solution, the weighing box detects the weight of the particles at intervals, the control box determines whether the crushing energy is sufficient, and automatically adjusts the rotation speed of the cylinder, thereby increasing the impact energy on the material and achieving the effects of high energy utilization and high crushing efficiency.

[0013] The present invention is further configured such that: the interior of the slide plate is uniformly provided with a plurality of first screening holes and second screening holes, each of the second screening holes being located to the left of the first screening holes, and the interior of the fixing plate is uniformly provided with a plurality of through holes.

[0014] By adopting the above technical solutions, the ball mill can screen particles of different sizes according to actual production needs, which helps to achieve multi-level classification of materials, provide materials of suitable size for different applications, reduce the number of times materials circulate in the ball mill, reduce wear on the internal parts of the ball mill, extend the service life of the equipment, and achieve the effects of high screening efficiency and high resource utilization.

[0015] The present invention is further configured such that: a solenoid valve is connected through the front side of the weighing box, the other end of the second feed pipe is fixedly connected to the output end of the solenoid valve, and the other end of the first feed pipe passes through the upper arm of the screening box.

[0016] The present invention is further configured such that: a feeding channel is connected through the upper side of the cylinder, and a locking valve is fixedly connected to the upper side of the feeding channel.

[0017] The present invention is further configured such that: the control box is equipped with a control module and a detection module; the control module is equipped with a coarse grinding submodule, a fine grinding submodule, a sieving adjustment submodule, and a power adjustment submodule; the control module is signal-connected to the detection module; the control module is signal-connected to a rotary motor, a vibrating motor, a first material pump, a second material pump, a solenoid valve, a first electromagnet, a second electromagnet, a first push rod, a second push rod, and a third push rod; and the detection module is signal-connected to a first weight sensor, a second weight sensor, and a weighing box.

[0018] By adopting the above technical solution, the material can be circulated and crushed. Circulation and crushing can reduce the total energy consumption required to achieve the desired fineness, reduce the residence time of the material in the ball mill, thereby reducing the over-crushing of fine particles, avoiding the generation of unnecessary dust, and ensuring that most of the particles in the material reach the required fineness, thus improving the consistency and quality of the product.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. By setting up a first feed pump, a second feed pump, and a screening box, the material is circulated and crushed. Circulation and crushing can reduce the total energy consumption required to achieve the fineness, reduce the residence time of the material in the ball mill, thereby reducing the over-crushing of fine particles, avoiding the generation of unnecessary dust, and ensuring that most of the particles in the material reach the required fineness, thus improving the consistency and quality of the product.

[0021] 2. By setting up a control box, small iron ball, large iron ball, second push rod, third push rod, first electromagnet, second electromagnet, first rubber belt, and second rubber belt, the ball mill can freely adjust the appropriate crushing mode to adapt to different production needs, produce products with better quality and more uniform particle size distribution, improve the crushing efficiency of the ball mill, and reduce the energy consumption of the equipment, achieving the effect of strong adaptability and strong controllability.

[0022] 3. By setting up a first push rod, a sliding plate, a first screening hole, a second screening hole, and a through hole, the ball mill can screen particles of different sizes according to actual production needs, which helps to achieve multi-level classification of materials, provide materials of suitable size for different applications, reduce the number of times materials circulate in the ball mill, reduce wear on the internal parts of the ball mill, extend the service life of the equipment, and achieve the effects of high screening efficiency and high resource utilization.

[0023] 4. By measuring the weight of the particles at intervals using a weighing box, the control box determines whether the crushing energy is sufficient and automatically adjusts the rotation speed of the drum, thereby increasing the impact energy on the material and achieving high energy utilization and high crushing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a ball mill with a grading and screening mechanism according to the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the cylinder in this invention;

[0026] Figure 3 This is a half-sectional view of the interior of the cylinder in this invention;

[0027] Figure 4 This is a half-sectional view of the interior of the screening box in this invention;

[0028] Figure 5 This is a diagram showing the slide plate state during the screening of large particles in this invention.

[0029] Figure 6 This is a diagram showing the state of the slide plate during the sieving of small particles in this invention.

[0030] Figure 7 This is a diagram showing the slide plate state when screening is stopped in this invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Base; 2. Rotary motor; 3. Wheel; 4. Rotating belt; 5. Cylinder; 6. First fixing block; 7. Second fixing block; 8. First rotating shaft; 9. Second rotating shaft; 10. First material pump; 11. Second material pump; 12. First feed pipe; 13. Second feed pipe; 14. Weighing box; 15. Positioning plate; 16. First push rod; 17. Screening box; 18. Solenoid valve; 19. Locking valve; 20. Vibrating motor; 21. Feeding channel; 22. 23. Slide plate; 24. Fixed plate; 25. First screening hole; 26. Second screening hole; 27. Through hole; 28. First ball storage box; 29. ​​Second ball storage box; 30. Second push rod; 31. Third push rod; 32. Second electromagnet; 33. First electromagnet; 34. Small iron ball; 35. Large iron ball; 36. First slider; 37. First rubber belt; 38. Second rubber belt; 39. Second slider; 40. Control box; 41. First weight sensor; 42. Second weight sensor. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] Please see Figure 1-7The present invention provides the following technical solution: a ball mill with a grading and screening mechanism, comprising a base 1 and a control box 39, the control box 39 being located on the front side of the base 1, a first fixing block 6 being fixedly connected to the upper right side of the base 1, a second fixing block 7 being fixedly connected to the upper left side of the base 1, a cylinder 5 being provided between the first fixing block 6 and the second fixing block 7, a second rotating shaft 9 and a first rotating shaft 8 being fixedly connected to the left and right sides of the cylinder 5 respectively, the first rotating shaft 8 being bearing-connected to the first fixing block 6, and the second rotating shaft 9 being bearing-connected to the second fixing block 7, both the first rotating shaft 8 and the second rotating shaft 9 being hollow cylinders, a second ball storage box 28 and a first ball storage box 27 being provided on the front and rear sides of the cylinder 5 respectively, both the first ball storage box 27 and the second ball storage box 28 penetrating to the inner side of the cylinder 5, a first weight sensor 40 being fixedly connected inside the side wall of the first ball storage box 27, a first electromagnet 32 ​​being fixedly connected inside the first ball storage box 27, the detection end of the first weight sensor 40 being in contact with the first electromagnet 32. A first electromagnet 32 ​​has several large iron balls 34 on one side. A second push rod 29 is fixedly connected to the right side of the first ball storage tank 27. The output end of the second push rod 29 passes through the side wall of the first ball storage tank 27 and is fixedly connected to a first slider 35. A first rubber belt 36 is fixedly connected to the right side of the first slider 35. The other end of the first rubber belt 36 is fixedly connected to the inner right side wall of the first ball storage tank 27. A second weight sensor 41 is fixedly connected inside the side wall of the second ball storage tank 28. A second electromagnet 31 is fixedly connected inside the second ball storage tank 28. The detection end of the second weight sensor 41 is in contact with the second electromagnet 31. A few small iron balls 33 are provided on one side of the second electromagnet 31. A third push rod 30 is fixedly connected to the right side of the second ball storage tank 28. The output end of the third push rod 30 passes through the side wall of the second ball storage tank 28 and is fixedly connected to a second slider 38. A second rubber belt 37 is fixedly connected to the right side of the second slider 38. The other end of the second rubber belt 37 is fixedly connected to the inner right side wall of the second ball storage tank 28.

[0035] Specifically, particles of different sizes can pass through the interior of both the first rotating shaft 8 and the second rotating shaft 9. The first ball storage box 27 is used to store large iron balls 34. The large iron balls 34 have high impact energy on the material. When processing materials with high hardness, the large iron balls 34 can more effectively crush the material and are suitable for preliminary crushing or coarse grinding processes. The impact energy of the iron balls on the material in the ball mill is low. The second ball storage box 28 is used to store small iron balls 33. The small iron balls 33 can increase the contact frequency of the material, which helps to further reduce the particle size and achieve finer crushing. Therefore, it is more suitable for fine grinding or ultrafine grinding processes and improves the mixing uniformity of the material.

[0036] The first electromagnet 32 ​​is used to fix the large iron ball 34. When the large iron ball 34 is not needed, the first electromagnet 32 ​​is energized and attracts the large iron ball 34. When the large iron ball 34 is needed, the first electromagnet 32 ​​is de-energized and releases the large iron ball 34. The first weight sensor 40 is used to detect the weight values ​​of the large iron ball 34 and the first electromagnet 32 ​​and convert them into electrical signals to be sent to the control box 39. The extension and retraction of the output end of the second push rod 29 is used to control the left and right movement of the first slider 35. When the output end of the second push rod 29 is fully extended, the first rubber belt 36 is flattened and the inside of the first ball storage box 27 is in a closed state. When the output end of the second push rod 29 is fully retracted, the first rubber belt 36 is folded and the inside of the first ball storage box 27 is in an open state.

[0037] The second electromagnet 31 is used to fix the small iron ball 33. When the small iron ball 33 is not needed, the second electromagnet 31 is energized to attract the small iron ball 33. When the small iron ball 33 is needed, the second electromagnet 31 is de-energized to release the small iron ball 33. The first weight sensor 40 is used to detect the weight value of the small iron ball 33 and the second electromagnet 31 and convert it into an electrical signal to be sent to the control box 39. The extension and retraction of the output end of the third push rod 30 is used to control the left and right movement of the second slider 38. When the output end of the third push rod 30 is fully extended, the second rubber belt 37 is flattened and the inside of the second ball storage box 28 is in a closed state. When the output end of the third push rod 30 is fully retracted, the second rubber belt 37 is folded and the inside of the second ball storage box 28 is in an open state.

[0038] Please see Figure 1 A rotary motor 2 is provided on the front side of the cylinder 5. The rotary motor 2 is fixedly connected to the base 1. A rotating wheel 3 is fixedly connected to the output end of the rotary motor 2. A rotating belt 4 is provided on the outer side of the rotating wheel 3. The rotating wheel 3 is connected to the cylinder 5 through the rotating belt 4.

[0039] Specifically, the rotation of the output end of the rotary motor 2 is used to control the rotation of the wheel 3. While the wheel 3 is rotating, it drives the rotating belt 4 to start moving, thereby controlling the rotation of the cylinder 5. The initial static state of the cylinder 5 is that the first ball storage box 27 and the second ball storage box 28 are on the same horizontal plane. When a large iron ball 34 is needed, the rotary motor 2 controls the cylinder 5 to rotate 90 degrees clockwise, so that the first ball storage box 27 is at the top of the cylinder 5. After the large iron ball 34 is released, it returns to its original position. When a small iron ball 33 is needed, the rotary motor 2 controls the cylinder 5 to rotate 90 degrees counterclockwise, so that the second ball storage box 28 is at the top of the cylinder 5. After the small iron ball 33 is released, it returns to its original position.

[0040] Please see Figure 1 and Figure 4A first material pump 10 is provided on the right side of the first fixed block 6. The input end of the first material pump 10 is fixedly connected to the first rotating shaft 8. The output end of the first material pump 10 is fixedly connected to the second material pipe 13. A second material pump 11 is provided on the left side of the second fixed block 7. The input end of the second material pump 11 is fixedly connected to the second rotating shaft 9. The output end of the second material pump 11 is fixedly connected to the rear side of the cylinder 5. A weighing box 14 is provided on the rear side of the cylinder 5. The weighing box 14 is fixedly connected to the base 1. A positioning plate 15 is fixedly connected to the upper left side of the weighing box 14. A first push rod 16 is fixedly connected to the upper side of the positioning plate 15. A vibration motor 20 is fixedly connected to the upper right side of the weighing box 14. A screening box 17 is fixedly connected to the output end of the vibration motor 20. A fixed plate 23 is fixedly connected to the lower side of the screening box 17. A sliding plate 22 is provided on the upper side of the fixed plate 23. The sliding plate 22 is fixedly connected to the output end of the first push rod 16. The sliding plate 22 is slidably connected to the inner wall of the weighing box 14.

[0041] Please see Figure 5 The interior of the slide plate 22 is evenly provided with a number of first screening holes 24 and second screening holes 25, and each second screening hole 25 is located to the left of the first screening hole 24. The interior of the fixing plate 23 is evenly provided with a number of through holes 26.

[0042] Please see Figure 1 A solenoid valve 18 is connected through the front of the weighing box 14. The other end of the second feed pipe 13 is fixedly connected to the output end of the solenoid valve 18. The other end of the first feed pipe 12 passes through the upper arm of the screening box 17.

[0043] Specifically, the second pump 11 is used to draw particles of different sizes from inside the cylinder 5 along the first feed pipe 12 to the screening box 17 for screening. The rotor of the vibrating motor 20 is equipped with eccentric blocks. These eccentric blocks rotate together with the rotor. Due to the position and size of the eccentric blocks, the centrifugal force generated forms a rotational unbalanced torque. This unbalanced torque causes the motor shaft to vibrate, which in turn transmits the vibration to the entire screening box 17. The extension and retraction of the output end of the first push rod 16 is used to control the sliding plate 22 to move left and right along the inner wall of the screening box 17. The through hole 26 is used to pass through particles of different sizes. The first screening hole 24 is used to pass through large particles. The second screening hole 25 is used to pass through small particles. The switch of the solenoid valve 18 is used to control the opening and closing of the outlet of the screening box 17. The first pump 10 is used to draw unqualified particles along the second feed pipe 13 into the cylinder 5 for re-crushing.

[0044] The size of the first screening hole 24 and the second screening hole 25 is set according to the actual situation. When it is necessary to screen out large particles, the output end of the first push rod 16 is fully retracted, the first screening hole 24 and the through hole 26 are interconnected, and the second screening hole 25 is closed. When it is necessary to screen out small particles, the output end of the first push rod 16 extends halfway, the first screening hole 24 is closed, and the second screening hole 25 and the through hole 26 are interconnected. When it is necessary to re-extract unqualified particles into the cylinder 5, the output end of the first push rod 16 extends fully, and both the first screening hole 24 and the second screening hole 25 are closed.

[0045] Please see Figure 1 A feed channel 21 is connected through the upper side of the cylinder 5, and a locking valve 19 is fixedly connected to the upper side of the feed channel 21.

[0046] Specifically, when materials need to be fed, the locking valve 19 is opened, and the materials enter the cylinder 5 along the feeding channel 21. When materials need to be crushed, the locking valve 19 is closed, and the feeding channel 21 is sealed.

[0047] The control box 39 is equipped with a control module and a detection module. The control module contains a coarse grinding submodule, a fine grinding submodule, a screening adjustment submodule, and a power adjustment submodule. The control module is connected to the detection module by signal. The control module is also connected to the rotary motor 2, the vibrating motor 20, the first material pump 10, the second material pump 11, the solenoid valve 18, the first electromagnet 32, the second electromagnet 31, the first push rod 16, the second push rod 29, and the third push rod 30 by signal. The detection module is connected to the first weight sensor 40, the second weight sensor 41, and the weighing box 14 by signal.

[0048] The operation of a ball mill includes the following steps:

[0049] S1: The ball mill crushes the material. The second pump 11 draws the particles into the screening box 17 for screening. The first pump 10 draws the unqualified particles into the cylinder 5 for re-crushing.

[0050] Specifically, passing all materials through a ball mill in one pass cannot achieve the required particle size. The materials may not achieve the required consistency and fineness, resulting in a decline in product quality. Furthermore, finer materials may remain in the ball mill for too long, leading to over-grinding and dust generation.

[0051] The operator opens the locking valve 19, feeds the material into the cylinder 5, and then closes the locking valve 19. The control module then activates the rotary motor 2, which controls the rotating wheel 3 to rotate. Simultaneously, the rotating wheel 3 drives the rotating belt 4 to move, thus controlling the rotation of the cylinder 5. The spheres inside the cylinder 5 impact and rub against the material. The control module then activates the second feed pump 11, drawing the crushed particles of different sizes along the first feed pipe 12 into the screening box 17. The control module also activates the vibration motor 20, transmitting vibration throughout the screening box 17. The screening box 17 then evenly distributes the particles through vibration. The particles are screened sequentially through the first screening hole 24 and the through hole 26. Particles of the qualified size are screened into the weighing box 14, while unqualified particles remain inside the screening box 17. The operator starts the first pump 10, the control module automatically shuts off the second pump 11, and controls the output end of the first push rod 16 to extend fully. The solenoid valve 18 is opened. At this time, the first screening hole 24 and the second screening hole 25 are closed, the inlet of the second feed pipe 13 is opened, and the first pump 10 draws the unqualified particles from the screening box 17 back into the cylinder 5 for further crushing, thus completing the material circulation crushing.

[0052] By setting up a first feed pump 10, a second feed pump 11, and a screening box 17, the material is circulated and crushed. Circulation and crushing can reduce the total energy consumption required to achieve the required fineness, reduce the residence time of the material in the ball mill, thereby reducing the over-crushing of fine particles, avoiding the generation of unnecessary dust, and ensuring that most of the particles in the material reach the required fineness, thus improving the consistency and quality of the product.

[0053] S2: Depending on the hardness of the material, adjust the size of the spheres to crush the material;

[0054] Specifically, during the crushing process, since the hardness of each material is different, the degree of difficulty and energy required for crushing also vary. Therefore, hard materials need to be coarsely ground to reduce their size, while softer materials can be directly finely ground. Coarse grinding requires processing on designated coarse grinding equipment, and fine grinding requires processing on designated fine grinding equipment. This operation involves many steps and is troublesome, wasting manpower and resources.

[0055] Before feeding materials, the staff first judges the hardness of the materials. When the materials are hard, the coarse grinding mode is started. The coarse grinding submodule controls the rotary motor 2 to start. The rotary motor 2 controls the cylinder 5 to rotate 90 degrees clockwise, so that the first ball storage box 27 is at the top of the cylinder 5. The output end of the second push rod 29 is fully retracted, the first rubber belt 36 is in a folded state, the first electromagnet 32 ​​is closed, and the large iron ball 34 is no longer attracted by the first electromagnet 32 ​​and falls into the crushing area inside the cylinder 5. The output end of the second push rod 29 is fully extended, the first slider 35 is close to the inner wall of the cylinder 5, the first rubber belt 36 becomes flat, the rotary motor 2 controls the cylinder 5 to rotate 90 degrees counterclockwise to return to its original position, and the staff feeds materials into the crushing area inside the cylinder 5 and turns on the rotary motor 2. The hard materials are crushed by the large iron ball 34.

[0056] When the previous mode was fine grinding, the coarse grinding submodule controlled the rotary motor 2 to start, controlling the cylinder 5 to rotate. When the second ball storage box 28 was at the bottom of the cylinder 5, the rotary motor 2 was turned off, the output end of the third push rod 30 was fully retracted, and the small iron ball 33 fell into the second ball storage box 28. The second electromagnet 31 was activated to attract the small iron ball 33. When the second weight sensor 41 detected that the weight value of the small iron ball 33 and the second electromagnet 31 reached the previously set weight value, the set weight value was the total weight value of the second electromagnet 31 and the small iron ball 33. The output end of the third push rod 30 was fully extended, the second rubber belt 37 was flattened, and the inlet and outlet of the second ball storage box 28 were closed. The rotary motor 2 was activated to control the cylinder 5 to rotate back to the initial position, and finally the above coarse grinding mode was activated.

[0057] When the material is relatively soft, the fine grinding mode is activated. The fine grinding submodule controls the rotary motor 2 to start, and the rotary motor 2 controls the cylinder 5 to rotate 90 degrees counterclockwise, so that the second ball storage box 28 is at the top of the cylinder 5. The output end of the third push rod 30 is fully retracted, the second rubber belt 37 is in a folded state, the second electromagnet 31 is turned off, and the small iron ball 33 is no longer attracted by the second electromagnet 31 and falls into the crushing area inside the cylinder 5. The output end of the third push rod 30 is fully extended, the second slider 38 is pressed against the inner wall of the cylinder 5, the second rubber belt 37 becomes flat, and the rotary motor 2 controls the cylinder 5 to rotate 90 degrees clockwise to return to its original position. The operator then puts the material into the crushing area inside the cylinder 5 and turns on the rotary motor 2 to crush the soft material through the small iron ball 33.

[0058] When the previous mode was coarse grinding, the fine grinding submodule controls the rotary motor 2 to start, controlling the cylinder 5 to rotate. When the first ball storage box 27 is at the bottom of the cylinder 5, the rotary motor 2 is turned off, the output end of the second push rod 29 is fully retracted, and the large iron ball 34 falls into the first ball storage box 27. The first electromagnet 32 ​​is activated to attract the large iron ball 34. When the first weight sensor 40 detects that the weight value of the large iron ball 34 and the first electromagnet 32 ​​reaches the previously set weight value, the set weight value is the total weight value of the first electromagnet 32 ​​and the large iron ball 34. The output end of the second push rod 29 is fully extended, the first rubber belt 36 is flattened, and the inlet and outlet of the first ball storage box 27 are closed. The rotary motor 2 is activated to control the cylinder 5 to rotate back to the initial position, and finally the fine grinding mode is activated.

[0059] By incorporating a control box 39, small iron balls 33, large iron balls 34, a second push rod 29, a third push rod 30, a first electromagnet 32, a second electromagnet 31, a first rubber belt 36, and a second rubber belt 37, the ball mill can freely adjust the appropriate grinding mode to adapt to different production needs, producing products with better quality and more uniform particle size distribution. This improves the grinding efficiency of the ball mill and reduces the energy consumption of the equipment, achieving a high degree of adaptability and controllability.

[0060] S3: Adjust the first sieve hole 24 and the second sieve hole 25 to sieve the particles to different degrees according to the required particle size;

[0061] Specifically, after the material is crushed, due to uneven crushing, the material will form particles of different sizes during coarse or fine grinding. In order to make the particle size meet specific standards, it is necessary to screen out particles of different sizes. In the current ball mill screening process, only one size of particle can be screened, and the size of the screened particles cannot be adjusted according to actual needs. Additional equipment is required to screen again, which reduces production efficiency and increases additional energy consumption and costs.

[0062] When it is necessary to screen out large particles, the screening adjustment submodule controls the output end of the first push rod 16 to retract completely, and the large particles inside the screening box 17 pass through the first screening hole 24 and the through hole 26 in sequence and enter the interior of the weighing box 14.

[0063] When it is necessary to screen out small particles, the screening adjustment submodule controls the output end of the first push rod 16 to extend halfway, and the small particles inside the screening box 17 pass through the second screening hole 25 and the through hole 26 in sequence and enter the interior of the weighing box 14.

[0064] When there is no need to screen particles, the screening adjustment submodule controls the output end of the first push rod 16 to extend fully, so that the particles inside the screening box 17 cannot pass through the first screening hole 24, the second screening hole 25, and the third screening hole.

[0065] By incorporating a first push rod 16, a sliding plate 22, a first screening hole 24, a second screening hole 25, and a through hole 26, the ball mill can screen particles of different sizes according to actual production needs. This facilitates multi-level grading of materials, provides materials of suitable sizes for different applications, reduces the number of times materials circulate in the ball mill, reduces wear on internal components, extends the service life of the equipment, and achieves high screening efficiency and high resource utilization.

[0066] S4: The weighing box 14 detects the weight of qualified particles and judges whether the crushing energy is sufficient based on the weight value, and automatically adjusts the rotation speed of the cylinder 5.

[0067] Specifically, insufficient energy input during the coarse grinding stage will result in the material not being fully crushed. Due to insufficient crushing, the particle size of the material may not meet the specifications required by subsequent processes or the final product, and a longer time or more cycles are required to reach the required particle size, thus reducing overall production efficiency.

[0068] The weighing box 14 is set to perform a weight check on the internal particles every 10 minutes. When the weighing box 14 detects the first weight value, it will record the first weight value. The weight value detected by the weighing box 14 for the second time will be reduced by the weight value detected previously. Let the detected weight values ​​be A1 and A2 respectively, and the standard difference between two consecutive weight values ​​of this material be W. When (A2-A1)≥W, the control box 39 judges that the energy output of this coarse grinding stage is sufficient and there is no need to increase the power of the rotary motor 2. When (A2-A1)<W, the control box 39 judges that the energy output of this coarse grinding stage is insufficient and the crushing efficiency is low. The power adjustment submodule controls the rotary motor 2 to increase the power, thereby increasing the rotation speed of the cylinder 5. Increasing the rotation speed will increase the centrifugal force of the grinding media, thereby increasing the impact energy on the material. Until the standard difference between two consecutive weight values ​​of this material is greater than or equal to W, the power adjustment submodule stops increasing the power of the rotary motor 2. It should be noted that the increased power of the rotary motor 2 will not exceed the critical speed of the ball mill.

[0069] The weight of the particles is detected at intervals by the weighing box 14, and the control box 39 determines whether the crushing energy is sufficient and automatically adjusts the rotation speed of the cylinder 5 to increase the impact energy on the material, thereby achieving the effect of high energy utilization and high crushing efficiency.

[0070] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A ball mill with a grading and screening mechanism, comprising a base (1) and a control box (39), characterized in that: The control box (39) is located on the front side of the base (1). A first fixing block (6) is fixedly connected to the upper right side of the base (1), and a second fixing block (7) is fixedly connected to the upper left side of the base (1). A cylindrical body (5) is provided between the first fixing block (6) and the second fixing block (7). A second rotating shaft (9) and a first rotating shaft (8) are fixedly connected to the left and right sides of the cylindrical body (5), respectively. The first rotating shaft (8) is connected to the first fixing block (6) by a bearing, and the second rotating shaft (9) is connected to the second fixing block (7) by a bearing. Both the first and second rotating shafts (9) are hollow cylinders. The inner front and rear sides of the cylinder (5) are respectively provided with a second ball storage tank (28) and a first ball storage tank (27). Both the first ball storage tank (27) and the second ball storage tank (28) extend through the inner side of the cylinder (5). A first weight sensor (40) is fixedly connected inside the side wall of the first ball storage tank (27). A first electromagnet (32) is fixedly connected inside the first ball storage tank (27). The detection end of the first weight sensor (40) is in contact with the first electromagnet (32). One side of the first electromagnet (32) is provided with several... A large iron ball (34) is attached to the first ball storage box (27). A second push rod (29) is fixedly connected to the right side of the first ball storage box (27). The output end of the second push rod (29) passes through the side wall of the first ball storage box (27) and is fixedly connected to a first slider (35). A first rubber belt (36) is fixedly connected to the right side of the first slider (35). The other end of the first rubber belt (36) is fixedly connected to the inner wall of the right side of the first ball storage box (27). A second weight sensor (41) is fixedly connected to the inside of the side wall of the second ball storage box (28). A second weight sensor (41) is fixedly connected to the inside of the second ball storage box (28). An electromagnet (31) is provided. The detection end of the second weight sensor (41) is in contact with the second electromagnet (31). Several small iron balls (33) are provided on one side of the second electromagnet (31). A third push rod (30) is fixedly connected to the right side of the second ball storage box (28). The output end of the third push rod (30) passes through the side wall of the second ball storage box (28) and is fixedly connected to the second slider (38). A second rubber belt (37) is fixedly connected to the right side of the second slider (38). The other end of the second rubber belt (37) is fixedly connected to the inner wall of the right side of the second ball storage box (28).

2. A ball mill with a grading and screening mechanism according to claim 1, characterized in that: A rotary motor (2) is provided on the front side of the cylinder (5). The rotary motor (2) is fixedly connected to the base (1). A rotating wheel (3) is fixedly connected to the output end of the rotary motor (2). A rotating belt (4) is provided on the outer side of the rotating wheel (3). The rotating wheel (3) is connected to the cylinder (5) through the rotating belt (4).

3. A ball mill with a grading and screening mechanism according to claim 2, characterized in that: A first material pump (10) is provided on the right side of the first fixed block (6). The input end of the first material pump (10) is fixedly connected to the first rotating shaft (8). The output end of the first material pump (10) is fixedly connected to one end of the second material pipe (13). A second material pump (11) is provided on the left side of the second fixed block (7). The input end of the second material pump (11) is fixedly connected to the second rotating shaft (9). The output end of the second material pump (11) is fixedly connected to one end of the first material pipe (12). A weighing box (14) is provided on the rear side of the cylinder (5). The weighing box (14) is connected to the base (1). The weighing box (14) is fixedly connected to a positioning plate (15) on the upper left side. A first push rod (16) is fixedly connected to the upper side of the positioning plate (15). A vibration motor (20) is fixedly connected to the upper right side of the weighing box (14). A screening box (17) is fixedly connected to the output end of the vibration motor (20). A fixing plate (23) is fixedly connected to the lower side of the screening box (17). A sliding plate (22) is provided on the upper side of the fixing plate (23). The sliding plate (22) is fixedly connected to the output end of the first push rod (16). The sliding plate (22) is slidably connected to the inner wall of the screening box (17).

4. A ball mill with a grading and screening mechanism according to claim 3, characterized in that: The interior of the slide plate (22) is uniformly provided with a plurality of first screening holes (24) and second screening holes (25), each of the second screening holes (25) being located to the left of the first screening hole (24), and the interior of the fixing plate (23) is uniformly provided with a plurality of through holes (26).

5. A ball mill with a grading and screening mechanism according to claim 4, characterized in that: A solenoid valve (18) is connected through the front side of the screening box (17), and the other end of the second feed pipe (13) is fixedly connected to the output end of the solenoid valve (18). The other end of the first feed pipe (12) passes through the upper wall of the screening box (17).

6. A ball mill with a grading and screening mechanism according to claim 5, characterized in that: A feed channel (21) is connected through the upper side of the cylinder (5), and a locking valve (19) is fixedly connected to the upper side of the feed channel (21).

7. A ball mill with a grading and screening mechanism according to claim 6, characterized in that: The control box (39) is equipped with a control module and a detection module. The control module is equipped with a coarse grinding sub-module, a fine grinding sub-module, a screening adjustment sub-module, and a power adjustment sub-module. The control module is connected to the detection module. The control module is connected to the rotary motor (2), the vibrating motor (20), the first material pump (10), the second material pump (11), the solenoid valve (18), the first electromagnet (32), the second electromagnet (31), the first push rod (16), the second push rod (29), and the third push rod (30). The detection module is connected to the first weight sensor (40), the second weight sensor (41), and the weighing box (14).

8. The method of using a ball mill with a grading and screening mechanism according to claim 7, characterized in that: Includes the following steps: S1: The ball mill crushes the material, the second pump (11) draws the particles into the screening box (17) for screening, and the first pump (10) draws the unqualified particles into the cylinder (5) for re-crushing. S2: Depending on the hardness of the material, adjust the size of the spheres to crush the material; S3: Adjust the first sieve hole (24) and the second sieve hole (25) to sieve the particles to different degrees according to the required particle size; S4: The weighing box (14) detects the weight of qualified particles and judges whether the crushing energy is sufficient based on the weight value, and automatically adjusts the rotation speed of the cylinder (5).

9. The method of use according to claim 8, characterized in that: Before feeding materials, the staff first judges the hardness of the materials. When the materials are hard, the coarse grinding mode is started. The coarse grinding sub-module controls the rotary motor (2) to start. The rotary motor (2) controls the cylinder (5) to rotate 90 degrees clockwise, so that the first ball storage box (27) is at the top of the cylinder (5). The output end of the second push rod (29) is completely retracted. The first rubber belt (36) is in a folded state. The first electromagnet (32) is turned off. The large iron ball (34) is no longer attracted by the first electromagnet (32) and falls into the crushing area inside the cylinder (5). The output end of the second push rod (29) is fully extended. The first slider (35) is close to the inner wall of the cylinder (5). The first rubber belt (36) becomes flat. The rotary motor (2) controls the cylinder (5) to rotate 90 degrees counterclockwise to return to its original position. The staff then feeds materials into the crushing area inside the cylinder (5) and turns on the rotary motor (2). The hard materials are crushed by the large iron ball (34). When the previous mode was fine grinding mode, the coarse grinding submodule controls the rotary motor (2) to start and control the cylinder (5) to rotate. When the second ball storage box (28) is at the bottom of the cylinder (5), the rotary motor (2) is turned off, the output end of the third push rod (30) is fully retracted, the small iron ball (33) falls into the second ball storage box (28), the second electromagnet (31) is started to attract the small iron ball (33), when the second weight sensor (41) detects that the weight value of the small iron ball (33) and the second electromagnet (31) reaches the previously set weight value, the set weight value is the total weight value of the second electromagnet (31) and the small iron ball (33), the output end of the third push rod (30) is fully extended, the second rubber belt (37) is flattened, and the inlet and outlet of the second ball storage box (28) are closed. The rotary motor (2) starts to control the cylinder (5) to rotate back to the initial position, and finally the above coarse grinding mode is started. When the material is relatively soft, start the fine grinding mode. The fine grinding sub-module controls the rotary motor (2) to start. The rotary motor (2) controls the cylinder (5) to rotate 90 degrees counterclockwise, so that the second ball storage box (28) is at the top of the cylinder (5). The output end of the third push rod (30) is fully retracted, the second rubber belt (37) is in a folded state, the second electromagnet (31) is turned off, the small iron ball (33) is no longer attracted by the second electromagnet (31) and falls into the crushing area inside the cylinder (5). The output end of the third push rod (30) is fully extended, the second slider (38) is close to the inner wall of the cylinder (5), the second rubber belt (37) becomes flat, the rotary motor (2) controls the cylinder (5) to rotate 90 degrees clockwise to return to its original position, and the staff put the material into the crushing area inside the cylinder (5) and turn on the rotary motor (2) to crush the soft material through the small iron ball (33). When the previous mode was coarse grinding mode, the fine grinding submodule controls the rotary motor (2) to start and control the cylinder (5) to rotate. When the first ball storage box (27) is at the bottom of the cylinder (5), the rotary motor (2) is turned off, the output end of the second push rod (29) is fully retracted, the large iron ball (34) falls into the first ball storage box (27), the first electromagnet (32) is activated to attract the large iron ball (34), when the first weight sensor (40) detects that the weight value of the large iron ball (34) and the first electromagnet (32) reaches the previously set weight value, the set weight value is the total weight value of the first electromagnet (32) and the large iron ball (34), the output end of the second push rod (29) is fully extended, the first rubber belt (36) is flattened, and the inlet and outlet of the first ball storage box (27) are closed. The rotary motor (2) is activated to control the cylinder (5) to rotate back to the initial position, and finally the above fine grinding mode is activated.

10. The method of use according to claim 8, characterized in that: When it is necessary to screen out large particles, the screening adjustment submodule controls the output end of the first push rod (16) to retract completely, and the large particles inside the screening box (17) pass through the first screening hole (24) and the through hole (26) in sequence and enter the interior of the weighing box (14); When it is necessary to screen out small particles, the screening adjustment submodule controls the output end of the first push rod (16) to extend halfway, and the small particles inside the screening box (17) pass through the second screening hole (25) and the through hole (26) in sequence and enter the interior of the weighing box (14); When there is no need to screen particles, the screening adjustment submodule controls the output end of the first push rod (16) to extend fully, and the particles inside the screening box (17) cannot pass through the first screening hole (24), the second screening hole (25), and the through hole.

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