An automatic feeding device suitable for a planetary ball mill

Abstract

The application provides an automatic feeding device suitable for a planetary ball mill, which comprises a feeding structure, a drying structure, a feeding bin, a drying hopper, a drying mechanism, a feeding bin, a feeding bin, a feeding port, a distribution structure, an intermediate bin, a distribution bin, a feeding port, a rotating and lifting structure, and the like. The application is more suitable for industrial production, and the degree of automation of the planetary ball mill in the feeding, drying, distribution and grinding processes is improved, and the intervention of manpower is reduced.

Description

Technical Field

[0001] This invention relates to the field of ball mills, and particularly to an automatic feeding device suitable for planetary ball mills. Background Technology

[0002] Planetary ball mills are key equipment for further pulverizing materials after they have been crushed. They are widely used for fine processing of materials and for dry or wet grinding of various ores and other grindable materials.

[0003] Most existing planetary ball mills are suitable for small-volume fine grinding in laboratories and are difficult to use in industrial production. The reasons are as follows: First, ball mills lack supporting pretreatment equipment and can only use general drying equipment to dry the powder before transferring it to the ball mill jar via other equipment. This leads to dust generation during the transfer process. Second, manual intervention is required when adding powder to the ball mill jar, which has a high operational risk and low efficiency. Third, the existing planetary ball mills have a low degree of automation in the feeding and material handling processes, making it difficult to improve processing efficiency. Summary of the Invention

[0004] This invention provides an automatic feeding device suitable for planetary ball mills, the purpose of which is to realize automatic feeding of planetary ball mills.

[0005] To achieve the above objectives, embodiments of the present invention provide an automatic feeding device suitable for planetary ball mills, comprising:

[0006] Feeding structure, including feed hopper;

[0007] A drying structure includes a drying hopper and a drying mechanism, wherein the feeding hopper is connected to the drying hopper, and the beginning and end of the drying mechanism are respectively connected to the drying hopper;

[0008] The feeding structure includes a feeding bin, which is connected to the drying hopper, and a feeding port is provided at the bottom of the feeding bin;

[0009] The material distribution structure includes an intermediate chamber and a material distribution chamber located on the side of the intermediate chamber and connected to the intermediate chamber. The intermediate chamber is used to connect to the feeding port, and the bottom of the material distribution chamber is provided with a feeding port for feeding material into the ball mill jar.

[0010] A rotating lifting structure is connected to the material distribution structure and drives the material distribution structure to rotate and lift. The material distribution structure rotates to the bottom of the feeding port to receive powder or rotates to the top of the ball mill jar to feed the powder.

[0011] Preferably, the drying mechanism includes a drying unit and a drying feed pipe and a drying discharge pipe connected to the beginning and end of the drying unit, with the beginning of the drying feed pipe and the end of the drying discharge pipe located inside the drying hopper, respectively.

[0012] The drying unit includes an S-shaped drying pipe, with its two ends connected to a drying feed pipe and a drying discharge pipe, respectively. A heating component is installed outside the drying pipe.

[0013] Preferably, the feeding structure includes a second negative pressure mechanism and a feeding inlet pipe. The feeding inlet pipe and the second negative pressure mechanism are respectively connected to the feeding bin. The feeding bin is also connected to a feeding outlet pipe. The feeding port is located inside the feeding outlet pipe, and a feeding auger is installed inside the feeding outlet pipe.

[0014] Preferably, the bottom of the intermediate hopper is provided with an upwardly protruding guide portion, and the side of the intermediate hopper is provided with an intermediate hole for communicating with the distribution hopper. The intermediate hole is arranged around the guide portion, and a vibration unit is arranged below the guide portion. The vibration unit applies point vibration and surface vibration to the guide portion.

[0015] The vibration unit includes a first vibrator and a force plate. A cavity is formed on the lower surface of the guide portion. The force plate is disposed in the cavity and fixedly connected to the guide portion. The first vibrator acts on the force plate. A marble is also disposed in the cavity and arranged above the force plate.

[0016] Preferably, the material distribution bin is further provided with a first sealing mechanism, which is used to seal the intermediate hole;

[0017] The material distribution bin is also equipped with a first sensor group for determining whether the bin is full of powder.

[0018] Preferably, the material distribution structure further includes a second sealing mechanism, which includes a first rotating mechanism, a first lifting mechanism, and a plug frame. An installation plate is provided below the intermediate hopper, the first rotating mechanism is installed on the installation plate, the first lifting mechanism is installed on the first rotating mechanism, the plug frame is fixed on the first lifting mechanism, and the plug frame is provided with feeding sealing plugs in the same number as the feeding ports.

[0019] The material distribution structure further includes a first angle sensor assembly and a first height sensor assembly. The first angle sensor assembly is used to obtain the angle between the feeding sealing plug and the feeding port on the horizontal plane, and the first height sensor is used to obtain the height difference between the feeding sealing plug and the feeding port on the vertical plane.

[0020] Preferably, the rotary lifting structure includes a second rotary mechanism and a second lifting mechanism, wherein the second lifting mechanism is disposed on the second rotary mechanism and the material dispensing structure is disposed on the second lifting mechanism.

[0021] Preferably, the second rotating mechanism is a hollow rotating platform, and the second lifting mechanism is a lead screw assembly;

[0022] The lead screw assembly includes a lead screw, a guide column, a top plate, and a base plate. The lead screw passes through the top plate and the base plate. The hollow rotating platform is located below the base plate. The inner ring of the hollow rotating platform is fixedly connected to the lead screw. The two ends of the guide column are fixedly connected to the top plate and the base plate, respectively. The outer ring of the hollow rotating platform is fixedly connected to the base plate. A sliding unit is screwed onto the lead screw. The guide column passes through the sliding unit. The sliding unit is fixedly connected to the material distribution structure.

[0023] Preferably, the automatic feeding device for a planetary ball mill further includes a sealing structure, the sealing structure including a first sealing plate and a second sealing plate fixedly connected to the sliding unit, a first rotating unit is provided between the first sealing plate and the second sealing plate, the second sealing plate rotates relative to the first sealing plate through the first rotating unit, a plurality of can lids are provided on the second sealing plate, and the can lids are connected to the second sealing plate through the second rotating unit;

[0024] A leveling unit for adjusting the level of the second cover plate is also provided between the first cover plate and the second cover plate.

[0025] Preferably, the leveling unit includes a sleeve passing through the first cover plate and an abutment rod disposed inside the sleeve. An elastic element is sleeved on the abutment rod. One end of the elastic element abuts against the first cover plate, and the other end abuts against the abutment rod. A universal ball bearing is disposed at the bottom of the abutment rod, and the universal ball bearing abuts against the second cover plate.

[0026] The plurality of leveling units are arranged in a ring between the first cover plate and the second cover plate.

[0027] The above-described solution of the present invention has the following beneficial effects:

[0028] This application is more suitable for industrial production. By improving the automation level of planetary ball mills in the feeding, drying, distributing and grinding processes, it reduces human intervention. Furthermore, the powder is in a sealed environment in the above processes, which can effectively prevent the generation of dust.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0030] Figure 1 This is an overall schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the drying structure and the feeding structure;

[0032] Figure 3 It is a schematic diagram of the feeding structure, the distributing structure, the rotating lifting structure, and the sealing structure;

[0033] Figure 4 Schematic diagram of the drying structure;

[0034] Figure 5 yes Figure 4 Enlarged view of section A;

[0035] Figure 6 This is a schematic diagram of the drying unit;

[0036] Figure 7 This is a schematic diagram of the feeding structure;

[0037] Figure 8 This is a schematic diagram of a rotating lifting structure;

[0038] Figure 9 This is a first-person view of the material distribution structure;

[0039] Figure 10 This is a schematic diagram of each material distribution bin;

[0040] Figure 11 This is a longitudinal cross-sectional view of the intermediate warehouse;

[0041] Figure 12 These are longitudinal cross-sectional views of each material distribution bin;

[0042] Figure 13 This is a half-section view of the cap structure.

[0043] [Explanation of Labels in the Attached Image]

[0044] 100 - Feeding structure, 110 - Feeding hopper, 120 - First negative pressure mechanism, 130 - First conveying pipe, 140 - Second conveying pipe

[0045] 200-Drying structure, 210-Drying hopper, 220-Drying mechanism, 221-Drying unit, 222-Drying feed pipe, 223-Drying discharge pipe, 221-1-Drying pipeline, 221-2-Heating assembly, 221-3-Transition pipe, 221-4-Overflow pipe, 225-First drive motor, 226-Reducer, 227-First transmission unit, 227-1-First bevel gear set, 227-2-First universal joint, 227-3-First worm gear assembly, 228-Second transmission unit, 228-1-Second universal joint, 228-2-Second worm gear assembly, 229-Third transmission unit, 229-1-Second bevel gear set, 229-2-Sprocket drive assembly.

[0046] 300 - Feeding structure, 310 - Feeding bin, 320 - Second negative pressure mechanism, 330 - Feeding pipe, 340 - Feeding outlet pipe.

[0047] 400-Distribution structure, 410-Intermediate bin, 411-Guide section, 412-Intermediate hole, 413-Vibration unit, 413-1-First vibrator, 413-2-Force plate, 413-3-Ball bearing, 414-Feed inlet, 415-Elastic unit, 416-Sealing ring, 420-Distribution bin, 421-First sealing mechanism, 421-1-Guide tube, 421-2-Intermediate sealing plug, 421-3-First pushing mechanism, 422-First sensor group, 423-Second sealing mechanism, 423-1-First rotating mechanism, 423-2-First lifting mechanism, 423-3-Plug holder, 423-4-Mounting plate, 423-5-Feeding sealing plug, 423-7-First height sensor assembly

[0048] 500-Rotary lifting structure, 510-Second rotary mechanism, 520-Second lifting mechanism, 521-Screw, 522-Guide column, 523-Top plate, 524-Chassis, 525-Sliding unit, 526-Rotary servo motor, 530-Gantry frame, 540-Electromagnetic brake.

[0049] 600-Sealing structure, 610-First sealing plate, 620-Second sealing plate, 630-First rotating unit, 640-Second rotating unit, 650-Can lid, 660-Leveling unit, 661-Sleeve, 662-Abutting rod, 663-Elastic element, 664-Universal ball bearing. Detailed Implementation

[0050] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0051] like Figure 1-13As shown, an embodiment of the present invention provides an automatic feeding device suitable for a planetary ball mill, including a feeding structure 100, a drying structure 200, a feeding structure 300, a distributing structure 400, and a rotary lifting structure 500. The feeding structure 100 has a feeding hopper 110 for storing powder. The drying structure 200 includes a drying hopper 210 and a drying mechanism 220. The feeding hopper 110 is connected to the drying hopper 210. The drying mechanism 220 is used to dry the powder. The beginning and end of the drying mechanism 220 are both located inside the drying hopper 210. When the powder in the feeding hopper 110 enters the drying hopper 210, it is cyclically dried by the drying mechanism 220. After a predetermined number of times or time, the drying mechanism 220 is closed, completing the drying of the powder. The dried powder is temporarily stored in the drying hopper 210. The aforementioned feeding structure 300 includes a feeding bin 310, which is connected to the drying hopper 210. The powder to be dried enters the feeding bin 310, and a feeding port is provided at the bottom of the feeding bin 310.

[0052] The aforementioned material distribution structure 400 includes an intermediate chamber 410 and a material distribution chamber 420 connected to the intermediate chamber 410. The material distribution chamber 420 is located on the side of the intermediate chamber 410. The intermediate chamber 410 has a feed inlet 414 at its top, which connects to the aforementioned feed port. The bottom of the material distribution chamber 420 has a feeding port for feeding material into the ball mill jars. The dried powder is distributed in the intermediate chamber 410 to each material distribution chamber 420, and then fed into each ball mill jar from the material distribution chamber 420.

[0053] The rotary lifting structure 500 is used to connect with the powder structure and drive the powder structure to rotate and lift. Driven by the rotary lifting structure 500, the powder structure rotates to the bottom of the feeding hole to receive the powder, or rotates to the top of the ball mill jar to put the received powder into the ball mill jar.

[0054] This application realizes the automated feeding and dispensing process, which does not require manual intervention during the execution of the process, effectively improving the grinding efficiency of the ball mill.

[0055] Specifically, the feeding structure 100 also includes a first negative pressure mechanism 120, which is connected to the feeding hopper 110. The first negative pressure mechanism 120 is used to create a negative pressure environment in the feeding hopper 110. The feeding hopper 110 is also connected to a first conveying pipe 130. One end of the first conveying pipe 130 is connected to a container holding powder, and the other end is connected to the feeding hopper 110. Under the action of the first negative pressure mechanism 120, the powder flows into the feeding hopper 110 under the action of negative pressure and is temporarily stored in the feeding hopper 110.

[0056] Preferably, a feed hopper 110 sensor group is provided inside the feed hopper 110. The feed hopper 110 sensor group is used to determine whether the feed hopper 110 is in a full state. The feed hopper 110 sensor group includes two feed hopper 110 sensors, one of which is used to detect the empty state, and the other is used to detect the full state. When the feed hopper 110 is detected to be empty, the empty state signal is transmitted to the first negative pressure mechanism 120, which operates to draw powder into the feed hopper 110; when the feed hopper 110 is detected to be full, the first negative pressure mechanism 120 stops operating, and the feed hopper 110 stops feeding.

[0057] At the bottom of the feeding hopper 110, a second conveying pipe 140 is also provided, which is connected to the drying hopper 210. The second conveying pipe 140 is located at the bottom of the feeding hopper 110, and a feeding auger is provided inside the second conveying pipe 140. Driven by the feeding auger, the powder is transported along the second conveying pipe 140 to the drying hopper 210.

[0058] Preferably, the feeding auger is driven in an existing manner, and full and empty signals are also transmitted to the feeding auger to control its working status.

[0059] In this embodiment, the first negative pressure mechanism 120 is used to draw the powder from the container holding the powder into the feed hopper 110. Since the powder particles are small, they are very easy to generate dust under the action of gas. However, by using the first negative pressure mechanism 120 and the feed hopper 110, it can be ensured that the dust only occurs in the feed hopper 110 and will not interfere with the external environment. When it is necessary to transport the powder from the feed hopper 110 to the drying hopper 210, the relatively gentle method of auger transportation is used to further suppress dust.

[0060] In this application, the drying mechanism 220 includes a drying unit 221, a drying feed pipe 222, and a drying discharge pipe 223. The drying unit 221 includes an S-shaped drying pipe 221-1, the two ends of which are connected to the drying feed pipe 222 and the drying discharge pipe 223, respectively. The beginning of the drying feed pipe 222 and the end of the drying discharge pipe 223 are both located in the drying hopper 210.

[0061] Within the drying mechanism 220, the powder passes sequentially through the drying hopper 210, the drying feed pipe 222, the drying unit 221, and the drying discharge pipe 223 before returning to the drying hopper 210. Through multiple cycles of drying, the moisture content of the powder can be effectively reduced, thus minimizing the occurrence of wall adhesion during subsequent material distribution and grinding processes.

[0062] Specifically, the drying unit 221 includes an S-shaped drying pipe 221-1, which includes several first drying pipes and a second drying pipe for connecting adjacent first drying pipes. The drying unit 221 also includes a drying feed pipe 222 and a drying discharge pipe 223. The several first drying pipes are arranged side by side in a vertical direction. The second drying pipes are perpendicular to the adjacent first drying pipes and connect the beginning and end of the adjacent first drying pipes, so that the first and second drying pipes are S-shaped as a whole. One end of the drying feed pipe 222 is inserted into the drying hopper 210, and the other end is connected to the uppermost second drying pipe. The drying feed pipe 222 is used to feed powder into the first drying pipes.

[0063] Preferably, a drying feed auger is provided inside the drying feed pipe 222, which drives the powder to move. A drying auger is provided inside the first drying pipe.

[0064] Preferably, a transition pipe 221-3 is provided on the uppermost second drying pipe, the radial direction of the transition pipe 221-3 being perpendicular to the axial direction of the second drying pipe, and the drying feed pipe 222 being connected to the second drying pipe through the transition pipe 221-3. A transition auger is provided inside the transition pipe 221-3.

[0065] Preferably, an overflow pipe 221-4 is provided at the other end of the transition pipe 221-3, and the end of the overflow pipe 221-4 is located inside the drying hopper 210. The overflow pipe 221-4 and the drying feed pipe 222 are located on both sides of the uppermost second drying pipe, respectively.

[0066] A heating component 221-2 is provided on the outer surface of the drying pipe 221-1 for heating the powder passing through the drying pipe 221-1.

[0067] After the powder enters the drying hopper 210, it enters the transition pipe 221-3 under the action of the drying feed pipe 222 and the drying feed auger, and then enters the drying pipe 221-1 under the drive of the transition auger. It moves in an S-shape in the drying pipe 221-1 and is finally discharged into the drying hopper 210 through the drying discharge pipe 223 at the bottom under the drive of the drying auger. After a preset number of cycles or time, the moisture content of the powder reaches the required level.

[0068] When a blockage occurs in the drying pipe 221-1, the transition auger pushes the powder into the overflow pipe 221-4, and the powder returns to the drying hopper 210 through the overflow pipe 221-4 for re-drying.

[0069] Preferably, in order to fix the drying unit 221 and the drying feed pipe 222 and other pipelines, the drying mechanism 220 also includes a frame, on which a power platform is provided, and on which a power source for driving each auger is provided.

[0070] Specifically, the power source includes a first drive motor 225. The output end of the first drive motor 225 is connected to a reducer 226 with dual output ends. One output end of the reducer 226 is equipped with a first transmission unit 227, which is connected to the drying feed auger. Specifically, the first transmission unit 227 includes a first bevel gear set 227-1, a first universal joint 227-2, and a first worm gear assembly 227-3. The first bevel gear set 227-1 includes a first bevel gear and a second bevel gear. The first bevel gear is located on one output end of the reducer, and the second bevel gear meshes with the first bevel gear. The second bevel gear is fixedly connected to one end of the first universal joint 227-2, and the other end of the first universal joint 227-2 is fixedly connected to the worm of the first worm gear assembly 227-3. The worm wheel of the first worm gear assembly 227-3 is fixed on the rotating shaft of the feeding drying auger.

[0071] The aforementioned drying auger has sprocket drive units alternately arranged on both sides. That is, a set of sprocket drive units is arranged on the same side of the first drying auger and the second drying auger, and another set of sprocket drive units is arranged on the other side of the third drying auger and the fourth drying auger. By alternately arranging the sprocket drive units, multiple drying augers can rotate synchronously.

[0072] A second transmission unit 228 is also provided at the other output end of the reducer 226. The second transmission unit 228 is used to transmit the power of the reducer 226 to any drying auger. Specifically, the second transmission unit 228 includes a second universal joint 228-1 and a second worm gear assembly 228-2. One end of the second universal joint 228-1 is connected to the output end of the reducer 226. The second universal joint 228-1 is fixedly connected to the worm of the second worm gear assembly 228-2. The worm gear of the second worm gear assembly 228-2 is set on the rotating shaft of any drying auger.

[0073] The second transmission unit 228 is also connected to a third transmission unit 229, which transmits power to the transition auger. Specifically, the third transmission unit 229 includes a second bevel gear set 229-1 and a sprocket drive assembly 229-2. The second bevel gear set 229-1 includes a third bevel gear and a fourth bevel gear. The third bevel gear is fixed to the drying auger that is fixed to the second worm gear assembly 228-2. The fourth bevel gear meshes with the third bevel gear and is equipped with a first drive gear. A second drive gear is equipped on the rotating shaft of the transition auger, and a sprocket drive is used between the first drive gear and the second drive gear.

[0074] In this application, the drying feed auger, drying auger and transition auger are driven to rotate by a first drive motor 225, so that the above augers can work synchronously.

[0075] After the powder is dried, it enters the feeding structure 300. The feeding structure 300 also includes a second negative pressure mechanism 320 and a feeding inlet pipe. One end of the feeding inlet pipe is connected to the feeding bin 310, and the other end is connected to the drying hopper 210. The second negative pressure mechanism 320 is connected to the feeding bin 110 to create a negative pressure environment inside the feeding bin 110.

[0076] When the second negative pressure mechanism 320 is working, the feed hopper 110 is under negative pressure. The powder enters the feed hopper 110 from the drying hopper 210 and is temporarily stored in the feed hopper 110. A feeding outlet pipe 340 is also provided at the bottom of the feed hopper 110. The aforementioned feeding port is located in the feeding outlet pipe 340, and a feeding auger is provided in the feeding outlet pipe 340. The feeding auger is driven by the second drive motor.

[0077] Preferably, a feeding bin 310 sensor group is provided in the feeding bin 310. Similarly, the feeding bin 310 sensor group is used to detect whether the feeding bin 110 is full. The feeding bin 310 sensor group includes two feeding bin 310 sensors, one for detecting whether the feeding bin 310 is full and the other for detecting whether the feeding bin 310 is empty. When the feeding bin 310 is full, the second negative pressure mechanism 320 stops working; when the feeding bin 310 is empty, the second negative pressure mechanism 320 starts working.

[0078] A first position detection sensor is also installed at the feeding port. This sensor is used to detect whether the feeding port and the material distribution structure 400 are directly below the feeding port. The first position detection sensor controls the second drive motor to operate.

[0079] Preferably, an isolation net is provided between the second negative pressure mechanism 320 and the feeding bin 310.

[0080] In the aforementioned material distribution structure 400, the intermediate chamber 410 is a cylindrical chamber. A receiving port for connecting to the feeding port is provided at the top of the intermediate chamber 410, and an upwardly protruding guide portion 411, which has a conical structure, is provided at the bottom of the intermediate chamber 410. A central hole 412 for communicating with the material distribution chamber 420 is provided on the side of the intermediate chamber 410, with the central hole surrounding the guide portion 411. A vibration unit 413 is provided below the guide portion 411, which can apply point vibration and surface vibration to the guide portion 411.

[0081] Specifically, the vibration unit 413 includes a first vibrator 413-1 and a force plate 413-2. The bottom surface of the guide part 411 has a cavity. The force plate 413-2 is fixedly installed in the cavity and fixedly connected to the guide part 411. The first vibrator 413-1 is located below the force plate 413-2 and acts on the force plate 413-2. Under the action of the first vibrator 413-1, the guide part 411 vibrates as a whole, realizing the surface vibration of the upper surface of the guide part 411.

[0082] Due to the special properties of the powder, when surface vibration is implemented, it can be ensured that the powder adhering to the upper surface of the guide part 411 slides into the central hole 412 and then enters the distribution bin 420. However, since some powder still adheres to the upper surface of the guide part 411, a wall-hanging phenomenon occurs. At this time, it is also necessary to vibrate the powder adhering to the guide part 411 to make it slide off.

[0083] Therefore, a number of marbles 413-3 are arranged above the force plate 413-2. When surface vibration occurs, the marbles 413-3 vibrate irregularly under the action of the force plate 413-2, continuously striking the lower surface of the guide part 411 and causing point vibration of the powder adhering to the upper surface of the guide part 411, which can effectively solve the problem of powder adhering to the wall.

[0084] An elastic unit 415 is provided on the lower end face of the guide part 411. Several elastic units 415 are arranged in a ring around the lower end face of the guide part 411. The elastic unit 415 can increase the amplitude of point vibration and surface vibration.

[0085] Preferably, a sealing ring 416 is provided between the guide section 411 and the side wall of the intermediate compartment 410.

[0086] The aforementioned distribution bins 420 are arranged around the intermediate bins 410 and are connected to the intermediate bins 410 through the intermediate holes 412. Each distribution bin 420 is also provided with a feeding port at the bottom.

[0087] A first sealing mechanism 421 is also provided in the material distribution bin 420. The first sealing mechanism 421 is used to seal the intermediate hole 412. Each first sealing mechanism 421 seals the material distribution bin 420 it is located in individually.

[0088] Specifically, each distribution bin 420 is equipped with a guide pipe 421-1, which is a rigid pipe and communicates with the central hole 412. The first sealing structure includes an intermediate sealing plug 421-2, which moves axially within the guide pipe 421-1. It can contact the guide pipe 421-1 for sealing or separate from it to keep the guide pipe 421-1 unobstructed. The intermediate sealing plug 421-2 is driven by a first pushing mechanism 421-3, which is fixed inside the distribution bin 420.

[0089] Preferably, each distribution bin 420 is equipped with a first sensor group 422, which is used to detect whether each distribution bin 420 is full and transmits the full or empty signal to the first push mechanism 421-3 to determine whether to distribute material from the intermediate bin 410 to the distribution bin 420. A second vibrator is provided on the outside of the side wall of each distribution bin 420.

[0090] Furthermore, the material distribution structure 400 also includes a second sealing mechanism 423, which is used to simultaneously seal the feeding ports of each material distribution bin 420. The second sealing mechanism 423 includes a first rotating mechanism 423-1, a first lifting mechanism 423-2, and a stopper 423-3. When setting up the material distribution bins 420 and the intermediate bins 410, in order to ensure that the powder can flow smoothly from the intermediate bins 410 to the material distribution bins 420, the material distribution bins 420 are located in the lower middle part of the intermediate bins 410. For this purpose, a space is formed below the intermediate bins 410, and the second sealing mechanism 423 is located in this space. An installation plate 423-4 is provided within this space, and is fixedly connected to the material distribution bin 420. The aforementioned first rotating mechanism 423-1 is mounted on the installation plate 423-4, and the first lifting mechanism 423-2 is mounted on the first rotating mechanism 423-1. The aforementioned plug holder 423-3 is fixed on the first lifting mechanism 423-2. Under the drive of the first lifting mechanism 423-2 and the first rotating mechanism 423-1, the plug holder 423-3 can rotate and lift. Understandably, the plug holder 423-3 is provided with the same number of feeding sealing plugs 423-5 as the material distribution bin 420.

[0091] In this embodiment, the first rotating mechanism 423-1 includes a rotating shaft, which is rotatably mounted on the mounting plate 423-4. The mounting plate 423-4 is also provided with a rotary motor that drives the rotating shaft to rotate. The first lifting mechanism 423-2 is an electric push rod, which is located at the lower end of the first rotating shaft and is located below the mounting plate 423-4.

[0092] The plug holder 423-3 includes several plug holder 423-3 connecting rods. One end of each plug holder 423-3 connecting rod is fixed at the same point, and the other end is a free end, so that the plug holder 423-3 as a whole presents a radial shape from the center. A feeding sealing plug 423-5 is provided on each free end.

[0093] In this embodiment, there are four material distribution bins 420. Therefore, there are four connecting rods of the plug frame 423-3. A feeding sealing plug 423-5 is provided at the free end of each connecting rod of the plug frame 423-3. The first lifting mechanism 423-2 is connected to the center of the plug frame 423-3.

[0094] The material distribution structure 400 also includes a first angle sensor assembly and a first height sensor assembly 423-7. The first angle sensor assembly is used to obtain the angle between the feeding sealing plug 423-5 and the feeding port on the horizontal plane, and the second height sensor is used to obtain the height difference between the feeding sealing plug 423-5 and the feeding port on the vertical plane.

[0095] Specifically, the first angle sensor assembly includes a first transmitter and a first receiver. The first transmitter is fixed to the first rotating mechanism 423-1, and the first receiver is fixed to one of the dispensing bins 420. When the angle between the feeding sealing plug 423-5 and the feeding port on the horizontal plane is zero, it indicates that the feeding sealing plug 423-5 is directly below the feeding port. The first height sensor assembly 423-7 includes a second transmitter and a second receiver. The second transmitter is fixed to the first lifting mechanism 423-2, and the second receiver is fixed to one of the dispensing bins 420. When the height difference between the feeding sealing plug 423-5 and the feeding port on the vertical plane is zero, it indicates that the feeding sealing plug 423-5 and the feeding port are at the same height.

[0096] By using the first angle sensor group and the first height sensor group together, the feeding sealing plug 423-5 can block the feeding port, or be located on the side below the feeding port, to prevent material leakage or obstruction during feeding.

[0097] When the distribution structure 400 rotates to a position below the feeding structure 300, a first position detection sensor at the feeding port determines whether the feeding port and the receiving port are aligned. After alignment, the distribution structure 400 feeds the powder into the receiving structure 300. The powder first enters the intermediate hopper and is temporarily stored there. Under the empty hopper command of the first sensor group 422, the first sealing mechanism 421 opens, and the powder is evenly distributed into the distribution hopper 420 through the intermediate hole 412 and stored there. Subsequently, the distribution structure 400 is rotated by the rotary elevator to a position above the ball mill jar to feed the powder into the ball mill jar.

[0098] Preferably, a second position detection sensor is also provided below the material distribution structure 400. The second position detection sensor is used to detect whether the material distribution bin 420 is aligned with the ball mill jar.

[0099] The aforementioned rotary lifting structure 500 includes a second rotary mechanism 510 and a second lifting mechanism 520. The second lifting mechanism 520 is mounted on the second rotary mechanism 510, and the material distribution structure 400 is mounted on the second lifting mechanism 520. Driven by the rotary lifting structure 500, the material distribution structure 400 can rotate and rise to the bottom of the feeding structure 300 to receive materials, and can also rotate and descend to the top of the ball mill jar to feed materials.

[0100] The aforementioned second rotating mechanism 510 is a hollow rotating platform, and the second lifting mechanism 520 is a lead screw 521 assembly. Specifically, the lead screw 521 assembly includes a lead screw 521, a guide column 522, a top plate 523, and a bottom plate 524. The lead screw 521 passes through the top plate 523 and the bottom plate 524 and can rotate relative to the top plate 523 and the bottom plate 524. The hollow rotating platform is located below the bottom plate 524. The inner ring of the hollow rotating platform is fixedly connected to the lead screw 521, and the outer ring of the hollow rotating platform is fixedly connected to the bottom plate 524. Driven by the hollow rotating platform, the bottom plate 524 can rotate relative to the lead screw 521. The two ends of the aforementioned guide column are respectively fixed to the top plate 523 and the bottom plate 524. A sliding unit 525 is slidably provided on the guide column. The sliding unit 525 is screwed to the lead screw 521, and the sliding unit 525 is used to fix the material distribution structure 400.

[0101] Furthermore, the rotary lifting structure 500 also includes a gantry frame 530, and the upper end of the lead screw 521 is rotatably connected to the gantry frame 530. Preferably, an electromagnetic brake 540 is provided at the upper end of the lead screw 521. The electromagnetic brake 540 is fixed on the gantry frame 530. When the electromagnetic brake 540 is de-energized, the rotation of the lead screw 521 is not restrained by the electromagnetic brake 540. When the electromagnetic brake 540 is energized, the rotation of the lead screw 521 is restrained by the electromagnetic brake 540 and cannot rotate.

[0102] Understandably, a rotary servo motor 526 for driving the lead screw 521 to rotate is provided at the lower end of the lead screw 521.

[0103] Furthermore, this application also includes a sealing structure 600, which is used to cover the grinding jar of a planetary ball mill. Specifically, the sealing structure 600 includes a first sealing plate 610 and a second sealing plate 620. The first sealing plate 610 is fixedly connected to the sliding unit 525 and is rotated and lifted by the rotary lifting structure 500. The second sealing plate 620 is rotatably mounted on the first sealing plate 610. The second sealing plate 620 is provided with a plurality of jar lids 650, which are rotatably mounted on the second sealing plate 620. The arrangement of the jar lids 650 is the same as the arrangement of the grinding jars of the planetary ball mill, ensuring that the jar lids 650 can be placed one-to-one on the grinding jar.

[0104] Preferably, when the sealing structure 600 is located directly above the ball mill jar, the material distribution structure 400 is located directly below the feeding structure 300.

[0105] In this embodiment, a first rotating unit 630 is provided between the first sealing plate 610 and the second sealing plate 620 to achieve relative rotation, and the second sealing plate 620 and each can lid 650 are relative to each other through a second rotating unit 640. Preferably, the first rotating unit 630 and the second rotating unit 640 are self-aligning ball bearings with cylindrical bores.

[0106] A leveling unit 660 is also provided between the first cover plate 610 and the second cover plate 620. The leveling unit 660 is used to adjust the levelness of the second cover plate 620.

[0107] Specifically, the adjusting unit includes a sleeve 661 passing through the first cover plate 610 and an abutment rod 662 disposed within the sleeve 661. An elastic element 663 is sleeved on the abutment rod 662, with one end of the elastic element 663 abutting against the first cover plate 610 and the other end abutting against the abutment rod 662. A universal ball bearing 664 is disposed at the bottom of the abutment rod 662, and the universal ball bearing 664 abuts against the second cover plate 620.

[0108] A plurality of leveling units 660 are provided between the second cover plate 620 and the second cover plate 620, and the leveling units 660 are arranged in a ring between the first cover plate 610 and the second cover plate 620.

[0109] When the sealing structure 600 is placed on the grinding jars, the total size of each grinding jar is not exactly the same, causing each jar to tilt to a certain extent. Therefore, by using the cylindrical hole self-aligning bearing as the first rotating unit 630 and the second rotating unit 640, the alignment requirements between the jar cover 650 and the grinding jars can be reduced, making it easier for the jar cover 650 to be placed on the grinding jars. During the grinding process, the grinding jars of the planetary ball mill can rotate on their own axis, and several grinding jars can also revolve around the central axis. Therefore, the second rotating unit 640 can cooperate with the rotation of the grinding jars, and the first rotating unit 630 can cooperate with the rotation of the grinding jars to ensure that the jar cover 650 is always placed on the grinding jars. During the revolution, the first sealing plate 610 and the second sealing plate 620 rotate relative to each other. Under the action of the universal ball bearing 664, the friction between them is rolling friction, which greatly reduces the frictional resistance.

[0110] After grinding, the capping structure 600 moves upward, and the cap detaches from the grinding jar. Under the action of the leveling unit 660, the second capping plate 620 returns to a horizontal state. Without the leveling unit 660, the second capping plate 620 would gradually tilt after repeated application, eventually causing the cap to fail to fit onto the grinding jar.

[0111] The working principle of this application is as follows:

[0112] First, the powder enters the feeding structure 100. The first conveying pipe 130 in the feeding structure 100 is inserted into the container holding the powder. The first negative pressure mechanism 120 creates negative pressure within the feeding hopper 110. Under the action of this negative pressure, the powder enters the feeding hopper 110. Detected by sensors in the feeding hopper 110, when the feeding hopper 110 is full, one sensor transmits a full-hopper signal to both the feeding auger and the first negative pressure mechanism 120. The first negative pressure mechanism 120 stops working, and the feeding auger starts working, transporting the powder from the feeding hopper 110 to the drying hopper 210 via the second conveying pipe 140. When the feeding hopper 110 is empty, another sensor transmits an empty-hopper signal to both the feeding auger and the first negative pressure mechanism 120. The first negative pressure mechanism 120 operates, drawing the powder into the feeding hopper 110, and the feeding auger stops rotating.

[0113] II. The powder undergoes cyclic drying within the drying structure 200. Within the drying structure 200, the powder stored in the drying hopper 210 is fed into the drying mechanism 220 via the drying feed auger 222. Within the drying mechanism 220, the powder undergoes an S-shaped motion along the drying pipe 221-1 and ultimately returns to the drying hopper 210 via the drying discharge pipe 223. The powder undergoes multiple cyclic drying processes within the drying structure 200.

[0114] Furthermore, when the drying pipe 221-1 in the drying mechanism 220 becomes congested or blocked, the transition auger in the transition pipe 221-3 will divert the material to the overflow pipe 221-4. The powder returns to the drying hopper 210 along the overflow pipe 221-4 and then re-enters the drying mechanism 220 through the drying feed pipe 222 to complete the drying process. After multiple drying cycles, the drying mechanism 220 stops operating.

[0115] 3. The powder is drawn into the feeding structure 300. The feeding structure 300 includes a feeding hopper 310. A second negative pressure mechanism 320 creates a negative pressure within the feeding hopper 310. The dried powder in the drying hopper 210 enters the feeding hopper 310 under the action of the negative pressure and is temporarily stored there. A sensor group is also installed in the feeding hopper 310. Two sensors are used to detect whether the feeding hopper 310 is full. When the feeding hopper 310 is empty, the second negative pressure mechanism 320 operates, drawing the powder from the drying hopper 210 into the feeding hopper 310. When the feeding hopper 310 is full, the second negative pressure mechanism 320 stops, preparing to feed the powder into the distribution structure 400.

[0116] 4. The powder is transferred to the distribution structure 400. Driven by the rotary lifting structure 500, the distribution structure 400 rotates to a position below the feeding structure 300 and moves upward, so that the feeding port and the receiving port are aligned (whether the feeding port and the receiving port are aligned is confirmed by the first position detection sensor). After alignment, the feeding auger starts to work, sending the powder in the feeding bin 310 into the distribution mechanism.

[0117] Within the distribution structure 400, the powder first enters the intermediate chamber 410. The first sensor group 422 in the distribution chamber 420 determines whether the distribution chamber 420 is full. If the distribution chamber 420 is empty, the first sealing mechanism 421 opens, and the powder flows from the intermediate chamber 410 into the distribution chamber 420. When the distribution chamber 420 is full, the first sealing mechanism 421 closes.

[0118] When the dispensing structure 400 receives the powder from the feeding structure 300, the sliding unit 525 is located above the rotary lifting mechanism. At this time, the sealing structure 600 connected to the sliding unit 525 is also located above, and the ball mill jar is in an open state. At this time, the powder that has been ground in the ball mill jar can be collected.

[0119] 5. The powder is transferred into the ball mill jar. Driven by the rotary lifting structure 500, the dispensing structure 400 rotates to the top of the ball mill jar and descends. The second position detection sensor detects whether the dispensing bin 420 is aligned with the ball mill jar. After alignment, the second sealing mechanism 423 is activated. The second sealing mechanism 423 rotates and descends, causing the feeding sealing plug 423-5 to dislodge from the feeding port, allowing the powder to flow from the dispensing bin 420 into the ball mill jar. When the first sensor group 422 in the dispensing bin 420 detects that the dispensing bin 420 is empty, it drives the second sealing mechanism 423 to close the feeding port.

[0120] Currently, most planetary ball mills are driven by stepper motors or servo motors. Therefore, when adjusting the relative position of the distribution bin 420 and the grinding jar, the stepper motor or servo motor can be adjusted to ensure that the distribution bin 420 and the grinding jar are aligned. Since this application does not involve any modification to the planetary ball mill, it will not be explained further.

[0121] VI. Sealing and Grinding. After the powder is added to the ball mill jar, the sealing structure 600 rotates to the top of the jar and presses the lid 650 into the jar, and the planetary ball mill begins grinding. After a certain period of time, grinding ends, and the sealing structure 600 moves upward. At this time, the material distribution structure 400 moves upward synchronously and moves again to the bottom of the feeding structure 300 to receive the material.

[0122] The advantages of this application are:

[0123] First, the powder is in a sealed environment during transportation, which can suppress the generation of dust.

[0124] Secondly, the feeding structure 100 and the conveying structure 300 adopt a negative pressure adsorption combined with auger transportation. The powder is drawn in by negative pressure and deposited in the feeding hopper 110 and the conveying hopper 310. Subsequently, it is conveyed into the drying hopper 210 and the distribution structure 400 by the feeding auger and the conveying auger. This improves the conveying efficiency and avoids dust generation.

[0125] Third, this application realizes fully automated operation of powder feeding, drying, dispensing and grinding, which can reduce human intervention and is more suitable for industrial production.

[0126] Fourth, a dedicated drying structure 200 for powders is provided. This drying structure 200 can perform circulating drying and is equipped with an overflow pipe 221-4, which solves the problem of powder clogging easily in tubular drying equipment. At the same time, the powder is transported by the drying feed auger within the drying structure 200, and the continuous rolling of the powder can improve drying efficiency.

[0127] Fifth, the intermediate silo 410 is equipped with a vibration unit 413, which can effectively alleviate the phenomenon of dust adhering to the wall of the guide section 411. Since the intermediate silo 410 mainly distributes materials to the distribution silo 420 by the sliding of the powder itself under its own gravity, although the powder undergoes a drying process to reduce the probability of adhering to the wall, it is still inevitable that some powder will still adhere to the wall. At this time, the point vibration and surface vibration of the vibration unit 413 can effectively shake off the powder adhering to the wall of the guide section 411, solving the problem of easy adhering to the wall of the intermediate silo and ensuring that the intermediate hole 412 does not become blocked when the intermediate silo 410 distributes materials to the distribution silo 420.

[0128] Sixth, both the material distribution structure 400 and the sealing structure 600 are driven by the rotary lifting structure 500, which makes this application more streamlined, requires less space, and reduces the cost of this application.

[0129] Seventh, the upper end of the rotary lifting structure 500 is fixed on the gantry frame 530, and the lead screw 521 is clamped by the electromagnetic brake 540 to prevent the rotary lifting structure 500 from shaking due to the grinding vibration of the ball mill jar when the cover structure 600 is placed on the ball mill jar.

[0130] Eighth, the sealing structure 600 is provided with a first rotating unit 630 and a second rotating unit 640, so that the sealing can revolve and rotate with the ball mill jar, eliminating the need to add a jar lid 650 to each ball mill jar individually.

[0131] Ninth, the sealing structure 600 has a leveling unit 660. The leveling unit 660 automatically levels the can lid 650 and the second sealing plate 620 after each opening, so as to prevent the can lid 650 from failing to cover the ball mill jar after multiple uses.

[0132] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic feeding device suitable for a planetary ball mill, characterized by, The application relates to a powder feeding device, which comprises the following parts: a feeding structure (100) comprising a feeding bin (110); a drying structure (200) comprising a drying hopper (210) and a drying mechanism (220), the feeding bin (110) being communicated with the drying hopper (210), and the drying mechanism (220) being communicated with the drying hopper (210) at the beginning end and the end end respectively; a feeding structure (300) comprising a feeding bin (310), the feeding bin (310) being communicated with the drying hopper (210), and the bottom of the feeding bin (310) being provided with a feeding port; a powder distributing structure (400) comprising an intermediate bin (410) and a powder distributing bin (420) arranged on the side of the intermediate bin (410) and communicated with the intermediate bin (410), the intermediate bin (410) being used for communicating with the feeding port, and the bottom of the powder distributing bin (420) being provided with a feeding port used for feeding the ball mill tank; a rotary lifting structure (500) connected with the powder distributing structure (400) and used for driving the powder distributing structure (400) to rotate and lift, the powder distributing structure (400) being rotated to the position below the feeding port to take the powder or being rotated to the position above the ball mill tank to feed the ball mill tank; the bottom of the intermediate bin (410) is provided with an upwardly protruding guide part (411), the side of the intermediate bin (410) is provided with an intermediate hole (412) used for communicating with the powder distributing bin (420), the intermediate hole (412) is arranged around the guide part (411), the lower portion of the guide part (411) is provided with a vibration unit (413), and the vibration unit (413) is used for applying point vibration and surface vibration to the guide part (411); the vibration unit (413) comprises a first vibrator (413-1) and a force receiving plate (413-2), the lower surface of the guide part (411) is formed with a cavity, the force receiving plate (413-2) is arranged in the cavity and fixedly connected with the guide part (411), the first vibrator (413-1) acts on the force receiving plate (413-2), and a marble (413-3) is further arranged in the cavity and arranged above the force receiving plate (413-2); the powder distributing bin (420) is further provided with a first sealing mechanism (421) used for sealing the intermediate hole (412); the powder distributing bin (420) is further provided with a first sensor group (422) used for judging whether the powder distributing bin (420) is full of powder. The material distribution structure (400) further comprises a second blocking mechanism (423), the second blocking mechanism (423) comprises a first rotating mechanism (423-1), a first lifting mechanism (423-2) and a plug holder (423-3), the lower part of the intermediate bin is provided with a mounting plate (423-4), the first rotating mechanism (423-1) is arranged on the mounting plate (423-4), the first lifting mechanism (423-2) is arranged on the first rotating mechanism (423-1), and the plug holder (423-3) is fixed on the first lifting mechanism (423-2); the plug holder (423-3) is provided with feeding sealing plugs (423-5) same in number as the feeding ports; The material distribution structure (400) further comprises a first angle sensor assembly and a first height sensor assembly (423-7), the first angle sensor assembly is used to obtain the included angle of the feeding sealing plug (423-5) and the feeding port in the horizontal plane, and the first height sensor is used to obtain the height difference of the feeding sealing plug (423-5) and the feeding port in the vertical plane.

2. The automatic feeding device suitable for use in a planetary ball mill according to claim 1, characterized in that: The drying mechanism (220) comprises a drying unit (221), a drying feeding pipe (222) and a drying discharging pipe (223) in communication with the drying unit (221) at the head and tail, respectively, and the beginning end of the drying feeding pipe (222) and the end end of the drying discharging pipe (223) are located in the drying hopper (210); The drying unit (221) comprises an S-shaped drying pipe (221-1), both ends of the drying pipe (221-1) are in communication with the drying feeding pipe (222) and the drying discharging pipe (223), respectively, and the drying pipe (221-1) is externally provided with a heating assembly (221-2).

3. The automatic feeding device suitable for use in planetary ball mills according to claim 1, characterized in that: The feeding mechanism (300) comprises a second negative pressure mechanism (320) and a feeding feeding pipe, the feeding feeding pipe and the second negative pressure mechanism (320) are in communication with the feeding bin (310), respectively, the feeding bin (310) is further communicated with a feeding discharging pipe (340), the feeding port is arranged in the feeding discharging pipe (340), and the feeding discharging pipe (340) is provided with a feeding auger.

4. The automatic feeding device suitable for use in planetary ball mills according to claim 1, characterized in that: The rotating and lifting structure (500) comprises a second rotating mechanism (510) and a second lifting mechanism (520), the second lifting mechanism (520) is arranged on the second rotating mechanism (510), and the material distribution structure (400) is arranged on the second lifting mechanism (520).

5. The automatic feeding device suitable for use in a planetary ball mill according to claim 4, characterized in that: The second rotating mechanism (510) is a hollow rotating platform, and the second lifting mechanism (520) is a lead screw (521) assembly; The screw rod (521) assembly includes a screw rod (521), a guide column (522), and a top disc (523) and a bottom disc (524), the screw rod (521) is arranged in the top disc (523) and the bottom disc (524), the hollow rotating platform is arranged below the bottom disc (524), the inner ring of the hollow rotating platform is fixedly connected with the screw rod (521), the two ends of the guide column (522) are fixedly connected with the top disc (523) and the bottom disc (524) respectively, the outer ring of the hollow rotating platform is fixedly connected with the bottom disc (524), the screw rod (521) is screwed with a sliding unit (525), the guide column (522) is arranged in the sliding unit (525), and the sliding unit (525) is fixedly connected with the material distribution structure (400).

6. The automatic feeding device suitable for use in planetary ball mills according to claim 4, characterized in that: The automatic feeding device suitable for the planetary ball mill further includes a cover structure (600), the cover structure (600) includes a first cover plate (610) fixedly connected with the sliding unit (525) and a second cover plate (620), a first rotating unit (630) is arranged between the first cover plate (610) and the second cover plate (620), the second cover plate (620) rotates relative to the first cover plate (610) through the first rotating unit (630), a plurality of jar covers (650) are arranged on the second cover plate (620), and the jar covers (650) and the second cover plate (620) are connected through a second rotating unit (640); A leveling unit (660) for adjusting the levelness of the second cover plate (620) is further arranged between the first cover plate (610) and the second cover plate (620).

7. The automatic feeding device suitable for use in a planetary ball mill according to claim 6, characterized in that: The leveling unit (660) includes a sleeve (661) arranged in the first cover plate (610) and an abutting rod (662) arranged in the sleeve (661), an elastic element (663) is sleeved on the abutting rod (662), one end of the elastic element (663) abuts against the first cover plate (610), the other end of the elastic element (663) abuts against the abutting rod (662), a universal ball bearing (664) is arranged at the bottom of the abutting rod (662), and the universal ball bearing (664) abuts against the second cover plate (620); A plurality of the leveling units (660) are annularly arranged between the first cover plate (610) and the second cover plate (620).

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