ball mill

Abstract

The application relates to the technical field of ball mills, and particularly discloses a ball mill, which comprises a support; a material cylinder is rotationally arranged on the support; the material cylinder comprises an outer cylinder body; a processing part is arranged on the outer cylinder body; the processing part comprises a material guide box fixedly arranged on the inner wall of the outer cylinder body, an air inlet groove arranged on the outer cylinder body and an air outlet hole arranged on the outer cylinder body; a collecting channel is surrounded between the material guide box and the inner wall of the outer cylinder body; an air passage mechanism is arranged on the support; when the material cylinder rotates, the crushed material enters the collecting channel; when the processing part passes through the air passage mechanism, a sealing mechanism opens the first feeding port, so that the qualified material powder is fed into a finished product cavity; when the processing part is away from the air passage mechanism, the sealing mechanism seals the first feeding port; the qualified material powder in the finished product cavity is guided out along the inclined guide surface; the qualified material is discharged in time, and new material can be continuously added; and the grinding effect of the ball mill is improved.

Description

Technical Field

[0001] This invention relates to the field of ball mill technology, and more specifically to ball mills. Background Technology

[0002] Ball mills are key equipment for further pulverizing materials after crushing. They are widely used in industries such as cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal ore beneficiation, and glass and ceramics production. They are used for dry or wet grinding of various ores and other grindable materials. Ball mills are suitable for grinding various ores and other materials and are widely used in mineral processing, building materials, and chemical industries. They can be divided into dry and wet grinding methods, and according to the discharge method, they can be divided into grate type and overflow type. A ball mill consists of a horizontal cylinder, hollow inlet and outlet shafts, and grinding heads. The cylinder is... The ball mill is a long cylindrical mill containing grinding media. The mill body is made of steel plate and is fixed to the mill body with steel liners. The grinding media are generally steel spheres, which are loaded into the mill body in different diameters and proportions. Steel segments can also be used as grinding media, depending on the particle size of the material being ground. The material is loaded into the mill body through the hollow shaft at the feed end of the ball mill. When the ball mill body rotates, the grinding media are carried away by the mill body due to inertia, centrifugal force, and friction, adhering to the mill body liner. When they are carried to a certain height, they are thrown down due to their own gravity. The falling grinding media, like projectiles, crush the material inside the mill body.

[0003] Most ball mills in related technologies operate intermittently. That is, the material is first added into the cylinder, and after all the material is ground, the machine is stopped and the ground material is discharged before new material can be added for the next batch of grinding. During the grinding process of a batch of material, qualified material will be formed one after another. However, these qualified materials can only be discharged after all the material has been ground, which results in qualified material not being discharged in time. At the same time, qualified material will be ground repeatedly, which greatly reduces the grinding effect of the ball mill. Summary of the Invention

[0004] This invention provides a ball mill, which aims to solve the problem in related technologies that ball mills cannot discharge qualified materials in a timely manner, and qualified materials will be repeatedly ground, thus reducing the grinding effect.

[0005] The ball mill of the present invention comprises:

[0006] Support;

[0007] A material cylinder is rotatably mounted on the support. The material cylinder includes an outer cylinder body, on which a processing unit is provided. The processing unit includes a guide box fixedly mounted on the inner wall of the outer cylinder body, an air inlet groove formed on the outer cylinder body, and an exhaust hole formed on the outer cylinder body. A collection channel is formed between the guide box and the inner wall of the outer cylinder body. The inner wall of the air inlet groove is provided with multiple air inlets penetrating the outer cylinder body.

[0008] The material guide box is provided with a discharge chamber and a screening channel. The discharge chamber is provided with a filter plate, which divides the discharge chamber into an air outlet chamber and a finished product chamber. The air outlet chamber is connected to the exhaust hole. The inner wall of the finished product chamber is provided with an inclined guide surface. The material guide box is provided with a first inlet and a second inlet. The two ends of the first inlet are respectively connected to the finished product chamber and the screening channel. The two ends of the second inlet are respectively connected to the screening channel and the collection channel. The material guide box is also provided with a sealing mechanism to open or block the first inlet and the second inlet.

[0009] A ventilation mechanism, mounted on the support, is capable of drawing air from the exhaust port and blowing air into the air inlet slot;

[0010] The grinding media are disposed inside the feed cylinder.

[0011] Preferably, the support includes a base plate, with fixed frames fixedly connected to both sides of the base plate. Two chucks are fixedly mounted on the two fixed frames, and each of the two chucks is provided with a feeding channel. The two chucks are rotatably connected to the material cylinder, and both ends of the material cylinder are respectively connected to the two feeding channels. A rotation drive device is installed between the base plate and the material cylinder to drive the material cylinder to rotate.

[0012] Preferably, the rotation drive device includes a drive motor and a reducer fixedly mounted on the base plate. The output end of the drive motor is connected to the input end of the reducer. A drive gear is fixedly provided at the output end of the reducer. The teeth of the drive gear mesh with a gear ring, and the gear ring is fixedly provided on the outer surface of the material cylinder.

[0013] Preferably, the sealing mechanism includes a first rotating shaft rotatably disposed on the inner wall of the first feed inlet and a second rotating shaft rotatably disposed on the inner wall of the second feed inlet. A first sealing plate is fixedly disposed on the first rotating shaft and a second sealing plate is fixedly disposed on the second rotating shaft. A transmission mechanism is disposed on the first rotating shaft and the second rotating shaft. The transmission mechanism can drive the first sealing plate and the second sealing plate to rotate, so that the first sealing plate opens or closes the first feed inlet and the second sealing plate opens or closes the second feed inlet.

[0014] Preferably, the transmission mechanism includes a plurality of first gears fixedly disposed on each of the first rotating shafts and a plurality of second gears fixedly disposed on each of the second rotating shafts. All the teeth of the first gears mesh with a first rack, and all the teeth of the second gears mesh with a second rack. A third gear is fixedly disposed on one of the first rotating shafts, and a lever corresponding to the material cylinder is fixedly disposed on one of the second rotating shafts. The lever corresponds to the ventilation mechanism, and the lever is provided with a tooth segment that meshes with the third gear.

[0015] Preferably, the transmission mechanism further includes a plurality of elastic elements, all of which are fixedly disposed between each second rotating shaft and the guide box and between each first rotating shaft and the guide box. The elastic force of the elastic elements can drive the first sealing plate to rotate through the first rotating shaft to close the first feed port, and the elastic force of the elastic elements can drive the second sealing plate to rotate through the second rotating shaft to close the second feed port.

[0016] Preferably, the ventilation mechanism includes an air hood disposed on the support, the air hood having an air intake groove corresponding to the exhaust port and an air blowing groove corresponding to the air inlet port.

[0017] Preferably, the air intake groove is connected to the air inlet of an external negative pressure pump, and the air blowing groove is connected to the air outlet of an external air blowing pump.

[0018] Preferably, an impact plate is also provided on the inner wall of the outer cylinder.

[0019] Preferably, the width of the second feed inlet is smaller than the width of the first feed inlet.

[0020] The beneficial effects of this invention are as follows: During use, material is added to the grinding cylinder for grinding. As the cylinder rotates, the crushed material enters the collection channel and is lifted. Then, the moving processing unit draws air from the exhaust port through the ventilation mechanism and blows air into the air inlet groove. Simultaneously, the sealing mechanism opens the first and second feed inlets, creating a connecting channel between the exhaust port, discharge chamber, first feed inlet, screening channel, second feed inlet, collection channel, air inlet, and air inlet groove. This allows gas to flow through the channel, carrying the crushed material within the collection channel. The crushed material then passes through the second feed inlet and... The first feed inlet is used for screening. The qualified material powder passes through the first feed inlet and enters the finished product chamber. The gas without material powder passes through the filter plate and enters the exhaust chamber and is discharged with the airflow. As the cylinder rotates, the processing section moves away from the ventilation mechanism. At the same time, the sealing mechanism seals the first and second feed inlets. The material in the collection channel and the screening channel are removed by gravity and continue to be ground. The qualified material powder in the finished product chamber is discharged along the inclined guide surface of the finished product chamber. This can realize the timely discharge of qualified materials and the continuous addition of new materials without stopping the machine, which effectively improves the grinding effect of the ball mill. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a specific embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the support structure in a specific embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the material cylinder in a specific embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the material guide box and impact plate in a specific embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the air intake groove, exhaust port and air intake hole in a specific embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the material guide box in a specific embodiment of the present invention.

[0027] Figure 7 This is a cross-sectional view of the guide box in a specific embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the sealing mechanism in a specific embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the ventilation mechanism in a specific embodiment of the present invention.

[0030] Figure label:

[0031] 10. Support; 11. Base plate; 12. Fixing frame; 13. Chuck; 131. Feed channel; 14. Rotary drive device; 141. Drive motor; 142. Reducer; 143. Drive gear; 144. Gear ring; 20. Material cylinder; 21. Outer cylinder; 22. Processing section; 221. Guide box; 2211. Discharge chamber; 22111. Air outlet chamber; 22112. Finished product chamber; 221121. Inclined guide surface; 2212. Screening channel; 2213. Filter plate; 2214. First feed inlet; 2215. Second feed inlet; 2216. Sealing mechanism; 22161. First 22162, Second rotating shaft; 22163, First sealing plate; 22164, Second sealing plate; 22165, Transmission mechanism; 221651, First gear; 221652, Second gear; 221653, First rack; 221654, Second rack; 221655, Third gear; 221656, Lever; 221657, Elastic element; 222, Air inlet groove; 223, Exhaust hole; 224, Air inlet; 225, Collection channel; 23, Impact plate; 30, Ventilation mechanism; 31, Air cover; 32, Suction groove; 33, Blowing groove; 40, Grinding body. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1 to 9 As shown, the ball mill of the present invention includes a support 10 for supporting the ball mill. A material cylinder 20 is rotatably mounted on the support 10 for containing materials. Grinding media 40 are disposed inside the material cylinder 20. When the material cylinder 20 rotates, the grinding media 40 adheres to the inner wall of the material cylinder 20 due to inertia, centrifugal force and friction and is carried away by the material cylinder 20. When it is carried to a certain height, it is thrown down due to its own gravity. The falling grinding media 40 crushes the materials in the material cylinder 20 like a projectile. The support 10 is provided with a ventilation mechanism 30 to deliver and extract gas to the material cylinder 20.

[0034] refer to Figure 1 and Figure 2As shown, the support 10 includes a base plate 11, with fixed brackets 12 fixedly connected to both sides of the base plate 11. Two chucks 13 are fixedly mounted on the two fixed brackets 12, each with a feeding channel 131 for material flow. Both chucks 13 are rotatably connected to the material cylinder 20 via bearings, and both ends of the material cylinder 20 are connected to the two feeding channels 131 respectively, allowing material to be added into the material cylinder 20 through the feeding channels 131. A rotation drive device 14 is installed between the base plate 11 and the material cylinder 20 to drive the material cylinder 20 to rotate. In this embodiment, the rotation drive device 14... The device includes a drive motor 141 and a reducer 142 fixedly mounted on the base plate 11. The output end of the drive motor 141 is connected to the input end of the reducer 142. The output end of the reducer 142 is fixedly connected to a drive gear 143. The teeth of the drive gear 143 mesh with a gear ring 144. The gear ring 144 is welded to the outer surface of the material cylinder 20. When the drive motor 141 is started, it can drive the drive gear 143 to rotate through the reducer 142. The rotation of the drive gear 143 can drive the gear ring 144 to rotate through its meshing transmission with the gear ring 144. The rotation of the gear ring 144 drives the material cylinder 20 to rotate.

[0035] refer to Figures 1 to 8 As shown, the material cylinder 20 includes an outer cylinder 21, on which a plurality of processing sections 22 are provided. Each processing section 22 includes a guide box 221 fixedly disposed on the inner wall of the outer cylinder 21, an air inlet groove 222 formed on the outer cylinder 21, and an exhaust hole 223 formed on the outer cylinder 21. The inner wall of the air inlet groove 222 is provided with a plurality of air inlets 224 penetrating the outer cylinder 21. The size of the air inlets 224 is smaller than the size of the material powder to prevent the material powder from flowing along the air inlets. 224 is exposed, and the air inlet 224 is directly opposite the guide box 221. The guide box 221 and the inner wall of the outer cylinder 21 form a collection channel 225, and the collection channel 225 is connected to the air inlet 224. An impact plate 23 is also fixedly connected to the inner wall of the outer cylinder 21. In this embodiment, the impact plate 23 is made of steel. When the material cylinder 20 rotates, the falling grinding media 40 can hit the impact plate 23, thus avoiding direct impact on the inner wall of the outer cylinder 21 and preventing damage to the outer cylinder 21.

[0036] Continue to refer to Figure 6 and Figure 7As shown, the feed box 221 is provided with a discharge chamber 2211 and a screening channel 2212. A filter plate 2213 is fixedly connected inside the discharge chamber 2211, which divides the discharge chamber 2211 into an exhaust chamber 22111 and a finished product chamber 22112. The filter holes on the filter plate 2213 are smaller than the size of the material powder. The exhaust chamber 22111 is connected to the exhaust port 223. The inner wall of the finished product chamber 22112 is provided with an inclined guide surface 221121, which allows the material to slide off the feed cylinder 20. The feed box 221 has multiple first feed ports 2214, each of which is connected to the finished product chamber 22112 and the screening channel 2212 at both ends. The width of each first feed port 2214 matches the size of the material powder, ensuring that the material is properly ground. The powdered material can pass through the first feed inlet 2214 and enter the finished product chamber 22112. The guide box 221 has multiple second feed inlets 2215. The width of the second feed inlet 2215 is smaller than the width of the first feed inlet 2214. Both ends of each second feed inlet 2215 are connected to the screening channel 2212 and the collection channel 225, respectively. The crushed material collected by the collection channel 225 can be preliminarily screened through the second feed inlets 2215. The material larger than the width of the second feed inlet 2215 is left in the collection channel 225, and the material smaller than the width of the second feed inlet 2215 but larger than the size of the first feed inlet 2214 is left in the screening channel 2212. The guide box 221 is also equipped with a sealing mechanism 2216, which can open or block each first feed inlet 2214 and each second feed inlet 2215.

[0037] Continue to refer to Figure 7 and Figure 8 As shown, the sealing mechanism 2216 includes a plurality of first rotating shafts 22161 rotatably disposed on the inner wall of each first feed inlet 2214 and a plurality of second rotating shafts 22162 rotatably disposed on the inner wall of each second feed inlet 2215. A first sealing plate 22163 is fixedly disposed on each first rotating shaft 22161, the size of which matches the size of the first feed inlet 2214. A second sealing plate 22164 is fixedly disposed on each second rotating shaft 22162. The small size matches the size of the second feed port 2215. All first rotating shafts 22161 and all second rotating shafts 22162 are equipped with transmission mechanisms 22165. Through the transmission mechanisms 22165, all first sealing plates 22163 and all second sealing plates 22164 can be rotated, so that the rotation of all first sealing plates 22163 can open or close all first feed ports 2214 respectively, and the rotation of all second sealing plates 22164 can open or close all second feed ports 2215 respectively.

[0038] Continue to refer to Figure 8As shown, the transmission mechanism 22165 includes a plurality of first gears 221651 fixedly mounted on each first rotating shaft 22161 and a plurality of second gears 221652 fixedly mounted on each second rotating shaft 22162. All the teeth of the first gears 221651 mesh with a first rack 221653, and all the teeth of the second gears 221652 mesh with a second rack 221654. A third gear 221655 is fixedly connected to one of the first rotating shafts 22161, and a lever 221656 is fixedly connected to one of the second rotating shafts 22162. The lever 221656 corresponds to the ventilation mechanism 30. The 221656 is provided with a tooth segment that meshes with the third gear 221655. Elastic elements 221657 are fixedly provided between the second rotating shaft 22162 and the guide box 221, as well as between the first rotating shaft 22161 and the guide box 221. In this embodiment, the elastic element 221657 is a torsion spring. The elastic force of the elastic element 221657 can drive the first sealing plate 22163 to rotate through the first rotating shaft 22161 to close the first feed port 2214. The elastic force of the elastic element 221657 can drive the second sealing plate 22164 to rotate through the second rotating shaft 22162 to close the second feed port 2215.

[0039] When the barrel 20 rotates, it drives the lever 221656 to move synchronously. Simultaneously, as the lever 221656 passes through the ventilation mechanism 30, the ventilation mechanism 30 can push the lever 221656 to deflect. The deflection of the lever 221656, through the meshing of its teeth with the third gear 221655, drives the third gear 221655 to rotate. The third gear 221655 drives the first rotating shaft 22161 connected to it to rotate. The rotating first rotating shaft 22161, through the transmission of the first rack 221653 and the first gear 221651, drives the remaining first rotating shafts. When 22161 rotates, all the first rotating shafts 22161 rotate, causing all the first sealing plates 22163 to rotate and open the first feed port 2214; at the same time, the lever 221656 deflects, causing the second rotating shaft 22162 connected to it to rotate. The rotating second rotating shaft 22162 drives the remaining second rotating shaft 22162 to rotate through the meshing of the second rack 221654 and the second gear 221652. The rotation of all the second rotating shafts 22162 causes all the second sealing plates 22164 to deflect, so as to open all the second feed ports 2215 respectively.

[0040] refer to Figure 9 As shown, the ventilation mechanism 30 includes an air cover 31 fixedly mounted on the chuck 13. The air cover 31 is provided with an air intake groove 32 corresponding to the exhaust port 223 and an air blowing groove 33 corresponding to the air inlet groove 222. The air intake groove 32 is connected to the air inlet end of an external negative pressure pump, and the air blowing groove 33 is connected to the air outlet end of an external air blowing pump.

[0041] In use, the material is added through the feeding channel 131 and eventually enters the material cylinder 20 along the feeding channel 131. Starting the drive motor 141 can drive the drive gear 143 to rotate through the reducer 142. The rotation of the drive gear 143 can drive the gear ring 144 to rotate through its meshing transmission. The rotation of the gear ring 144 drives the material cylinder 20 to rotate. Due to the action of inertia, centrifugal force and friction, the grinding media 40 is attached to the inner wall of the material cylinder 20 and carried away by the material cylinder 20. When it is carried to a certain height, it is thrown down due to the gravity of the grinding media 40 itself. The falling grinding media 40 crushes the material in the material cylinder 20 like a projectile, thus achieving the grinding of the material.

[0042] During this process, as the material cylinder 20 rotates, the crushed material enters the collection channel 225 and is lifted. Then, the moving processing unit 22 passes the ventilation mechanism 30, connecting the suction groove 32 on the ventilation mechanism 30 with the exhaust port 223 for suction, and connecting the blowing groove 33 on the ventilation mechanism 30 with the air inlet groove 222 for blowing. Simultaneously, the ventilation mechanism 30 presses against the lever 221656, causing it to deflect. The deflection of the lever 221656, through its teeth meshing with the third gear 221655, drives the third gear 221655 to rotate. The third gear 221655 drives the first rotating shaft 22161 connected to it to rotate. The rotating first rotating shaft 22161, through the transmission of the first rack 221653 and the first gear 221651, drives the remaining first rotating shafts 22161 to rotate. The rotation of all the first rotating shafts 22161 drives all... The first sealing plate 22163 rotates to open the first feed inlet 2214; at the same time, the lever 221656 deflects to drive the second rotating shaft 22162 connected to it to rotate. The rotating second rotating shaft 22162 drives the remaining second rotating shaft 22162 to rotate through the meshing of the second rack 221654 and the second gear 221652. The rotation of all the second rotating shafts 22162 drives all the second sealing plates 22164 to deflect, so as to open all the second feed inlets 2215 respectively, so that the suction groove 32, exhaust hole 223, discharge chamber 2211, first feed inlet 2214, screening channel 2212, second feed inlet 2215, collection channel 225, air inlet hole 224, air inlet groove 222 and air blowing groove 33 form a connected channel. The gas in the channel flows by the external negative pressure pump to draw air from the suction groove 32 and the external air blowing pump to draw air from the air blowing groove 33.

[0043] The gas drives the crushed material in the collection channel 225 to flow, so that the crushed material first passes through the second feed port 2215 for screening. Material larger than the width of the second feed port 2215 is left in the collection channel 225, while material smaller than the width of the second feed port 2215 but larger than the size of the first feed port 2214 is left in the screening channel 2212. The qualified ground material powder passes through the first feed port 2214 and enters the finished product chamber 22112. The gas without material powder passes through the filter plate 2213 and enters the exhaust chamber 22111 and is discharged with the airflow.

[0044] As the material cylinder 20 rotates, the processing unit 22 moves away from the ventilation mechanism 30, and the lever 221656 disengages from the restriction of the ventilation mechanism 30. Under the elastic force of the elastic element 221657, the elastic force of the elastic element 221657 drives the first sealing plate 22163 to rotate through the first rotating shaft 22161, thereby closing the first feed inlet 2214. Furthermore, the elastic force of the elastic element 221657 drives the second sealing plate 22164 to rotate through the second rotating shaft 22162, thereby closing the second feed inlet 2215. Along with the rotation of the material cylinder 20, the material in the collection channel 225 and the screening channel... The material in 2212 is removed by gravity and continues to be ground. The qualified material powder in the finished product chamber 22112 is discharged along the inclined guide surface 221121 of the finished product chamber 22112. This allows for the timely discharge of qualified material and the continuous addition of new material without stopping the machine, effectively improving the grinding effect of the ball mill. In addition, during the entire ball milling process, the grinding media 40 continuously impacts the feed cylinder 20 and generates vibration, which can shake off the residual material powder on the filter plate 2213 to prevent clogging of the filter plate 2213. At the same time, the vibration can also accelerate the discharge efficiency of qualified material powder in the finished product chamber 22112.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ball mill, characterized in that, include: Support; A material cylinder is rotatably mounted on the support. The material cylinder includes an outer cylinder body, on which a processing unit is provided. The processing unit includes a material guide box fixedly mounted on the inner wall of the outer cylinder body, an air inlet groove formed on the outer cylinder body, and an exhaust hole formed on the outer cylinder body. A collection channel is formed between the material guide box and the inner wall of the outer cylinder body. Multiple air inlets penetrating the outer cylinder body are provided on the inner wall of the air inlet groove. The material guide box is provided with a discharge chamber and a screening channel. The discharge chamber is provided with a filter plate, which divides the discharge chamber into an air outlet chamber and a finished product chamber. The air outlet chamber is connected to the exhaust hole. The inner wall of the finished product chamber is provided with an inclined guide surface. The material guide box is provided with a first inlet and a second inlet. The two ends of the first inlet are respectively connected to the finished product chamber and the screening channel. The two ends of the second inlet are respectively connected to the screening channel and the collection channel. The material guide box is also provided with a sealing mechanism to open or block the first inlet and the second inlet. A ventilation mechanism, mounted on the support, is capable of drawing air from the exhaust port and blowing air into the air inlet slot; Grinding media are disposed inside the feed cylinder; The width of the second feed inlet is greater than the width of the first feed inlet; The air inlet is directly opposite the material guide box; As the cylinder rotates, the crushed material enters the collection channel and is lifted. The gas drives the crushed material in the collection channel to flow, so that the crushed material is screened through the second feed port and the first feed port.

2. The ball mill according to claim 1, characterized in that, The support includes a base plate, with fixed frames fixedly connected to both sides of the base plate. Two chucks are fixedly installed on the two fixed frames, and each of the two chucks is provided with a feeding channel. The two chucks are rotatably connected to the material cylinder, and both ends of the material cylinder are respectively connected to the two feeding channels. A rotation drive device is installed between the base plate and the material cylinder to drive the material cylinder to rotate.

3. The ball mill according to claim 2, characterized in that, The rotation drive device includes a drive motor and a reducer fixedly mounted on the base plate. The output end of the drive motor is connected to the input end of the reducer. A drive gear is fixedly provided at the output end of the reducer. The teeth of the drive gear mesh with a gear ring, and the gear ring is fixedly provided on the outer surface of the material cylinder.

4. The ball mill according to claim 1, characterized in that, The sealing mechanism includes a first rotating shaft rotatably disposed on the inner wall of the first feed inlet and a second rotating shaft rotatably disposed on the inner wall of the second feed inlet. A first sealing plate is fixedly disposed on the first rotating shaft and a second sealing plate is fixedly disposed on the second rotating shaft. A transmission mechanism is disposed on the first rotating shaft and the second rotating shaft. The transmission mechanism can drive the first sealing plate and the second sealing plate to rotate, so that the first sealing plate opens or closes the first feed inlet and the second sealing plate opens or closes the second feed inlet.

5. The ball mill according to claim 4, characterized in that, The transmission mechanism includes a plurality of first gears fixedly mounted on each of the first rotating shafts and a plurality of second gears fixedly mounted on each of the second rotating shafts. All the teeth of the first gears mesh with a first rack, and all the teeth of the second gears mesh with a second rack. A third gear is fixedly mounted on one of the first rotating shafts, and a lever corresponding to the material cylinder is fixedly mounted on one of the second rotating shafts. The lever corresponds to the ventilation mechanism, and the lever is provided with a tooth segment that meshes with the third gear.

6. The ball mill according to claim 5, characterized in that, The transmission mechanism also includes multiple elastic elements, all of which are fixedly disposed between each second rotating shaft and the guide box and between each first rotating shaft and the guide box. The elastic force of the elastic elements can drive the first sealing plate to rotate through the first rotating shaft to close the first feed port, and the elastic force of the elastic elements can drive the second sealing plate to rotate through the second rotating shaft to close the second feed port.

7. The ball mill according to claim 1, characterized in that, The ventilation mechanism includes an air hood mounted on the support, the air hood having an air intake groove corresponding to the exhaust port and an air blowing groove corresponding to the air inlet port.

8. The ball mill according to claim 7, characterized in that, The air intake slot is connected to the air inlet of an external negative pressure pump, and the air blowing slot is connected to the air outlet of an external air blowing pump.

9. The ball mill according to claim 1, characterized in that, An impact plate is also provided on the inner wall of the outer cylinder.

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