A grinding device for aluminum oxide production

Abstract

The invention discloses a grinding device for aluminum oxide production, which relates to the field of aluminum oxide production, comprising a box body, a feed hopper is installed on the top of the box body, a discharge pipe is installed on the bottom of the box body, and also comprises a sieve plate; the sieve plate is installed in the box body, a discharge hopper is fixedly installed on the bottom of the sieve plate, the bottom of the discharge hopper is communicated with the discharge pipe, a fixed cylinder is fixedly installed on the sieve plate, a grinding plate is installed on the top of the fixed cylinder, the grinding plate comprises a circular plate and a fan-shaped plate, a plurality of the fan-shaped plates are hinged on the circular plate, and the plurality of the fan-shaped plates are in contact with each other, which effectively solves the technical problems that when a grinding roller grinds aluminum oxide on a grinding plate, after the aluminum oxide is ground into powder, part of the aluminum oxide powder will adhere to the grinding plate, which is inconvenient for feeding, and after grinding the aluminum oxide, it is impossible to determine whether the fineness of the ground aluminum oxide powder meets the standard, and the aluminum oxide that does not meet the standard cannot be screened out for further grinding.

Description

Technical Field

[0001] The invention relates to the field of alumina production, in particular to a grinding device for alumina production. Background Art

[0002] Alumina is a high-hardness compound with a melting point of 2054 degrees Celsius and a boiling point of 2980 degrees Celsius. It is an ionized crystal that can be ionized at high temperatures. It is often used as an analytical reagent, dehydration of organic solvents, adsorbent, organic reaction catalyst, abrasive, polishing agent, raw material for smelting aluminum, and refractory material. When actually producing alumina, grinding equipment is required to grind it into a usable powder. The actual use of grinding equipment for alumina production has the advantages of simple operation, good grinding effect and stable use.

[0003] However, the existing alumina grinding devices have the following problems: 1. The grinding roller grinds the alumina on the grinding plate. After the alumina is ground into powder, some of the alumina powder will adhere to the grinding plate, making it inconvenient to feed the alumina; 2. After grinding the alumina, it is impossible to determine whether the fineness of the ground alumina powder meets the standard, and it is impossible to screen out the alumina that does not meet the standard for further grinding. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a grinding device for aluminum oxide production, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a grinding device for alumina production, comprising a box body, a feed hopper is installed on the top of the box body, a discharge pipe is installed on the bottom of the box body, and also includes a sieve plate; the sieve plate is installed in the box body, a lower hopper is fixedly installed on the bottom of the sieve plate, the bottom of the lower hopper is communicated with the discharge pipe, a fixed cylinder is fixedly installed on the sieve plate, a grinding plate is installed on the top of the fixed cylinder, the grinding plate comprises a circular plate and a fan-shaped plate, several of the fan-shaped plates are hinged on the circular plate, and several of the fan-shaped plates are in contact with each other, a driving assembly for driving several of the fan-shaped plates to flip downward is installed on the fixed cylinder, a baffle cover is movably installed in the box body, the outer periphery of the grinding plate is in contact with the baffle cover, a grinding assembly and an auxiliary unloading assembly are rotatably installed on the grinding plate; a return assembly is installed on the side wall of the box body.

[0006] Preferably, the grinding assembly includes a grinding roller, a first gear box is fixedly mounted on the top of the grinding plate, a first motor is fixedly mounted on the bottom of the first gear box, a driving shaft is fixedly mounted on the driving end of the first motor, a first spur gear is fixedly mounted on the top of the driving shaft, a first spur gear ring meshing with the first spur gear is rotatably mounted on the first gear box, a mounting frame is fixedly mounted on the first spur gear ring, a cylinder is mounted on the mounting frame, and the grinding roller is rotatably mounted on the telescopic end of the cylinder.

[0007] Preferably, the auxiliary unloading component includes a scraper, a second spur gear is rotatably mounted on the first motor drive shaft, a second spur gear ring meshing with the second spur gear is rotatably mounted on the first gear box, a fixed plate is fixedly mounted on the second spur gear ring, a cover is mounted on the fixed plate, a plurality of striking rods are mounted on the fixed plate, the scraper is fixedly mounted on the bottom of the plurality of striking rods, and two adjacent scrapers are in contact with each other.

[0008] Preferably, a third motor is fixedly mounted on the side wall of the cover body, a rotating rod is rotatably mounted in the cover body, one end of the rotating rod passes through the side wall of the cover body and is fixedly connected to the driving end of the third motor, a plurality of cams are fixedly mounted on the rotating rod, a plurality of striking rods are slidably connected to the cams, a plurality of striking rods are fixedly mounted with lifting plates, and tension springs are arranged between the lifting plates and the fixed plates.

[0009] Preferably, the driving assembly includes a second motor, a second motor is fixedly mounted on the central bottom wall of the screen plate, a first threaded rod is rotatably mounted in the fixed cylinder, a driving end of the second motor is fixedly connected to the first threaded rod, a first threaded block is screwed on the first threaded rod, a plurality of hinged rods are hinged on the first threaded block, a plurality of the hinged rods are hinged to a plurality of the fan-shaped plates, a sliding opening is opened on the fixed cylinder, and a plurality of the hinged rods slide in the sliding opening.

[0010] Preferably, a rotating ring is rotatably mounted on the sieve plate, a rotating plate is fixedly mounted on the rotating ring, and the bottom of the rotating plate is in contact with the upper surface of the sieve plate.

[0011] Preferably, a gear cover is fixedly mounted on the outer wall of the bottom of the fixed cylinder, a driven bevel gear is rotatably mounted on the fixed cylinder located inside the gear cover, the driven bevel gear is fixedly connected to the rotating ring, a driving bevel gear meshing with the driven bevel gear is rotatably mounted inside the gear cover, and a fourth motor for driving the driving bevel gear to rotate is fixedly mounted on the side wall of the box body.

[0012] Preferably, the return material assembly includes a conveying box, the conveying box is fixedly mounted on the side wall of the box body, a conveyor belt is installed in the conveying box, a plurality of conveying covers are fixedly mounted on the conveyor belt, a feed port is opened on the bottom side wall of the box body, a discharge port is opened on the top side wall of the box body, the feed port and the discharge port are both connected to the interior of the plurality of conveying covers, and the discharge port and the bottom wall of the feed port are both arranged as inclined surfaces.

[0013] Preferably, a push plate is slidably installed in several of the conveying covers, and a first electromagnet is provided on the push plate. A pair of second electromagnets is provided on the inner wall of the conveying box. The second electromagnet located on the opposite side of the feed port has the same magnetic pole direction as several of the first electromagnets, and the second electromagnet located on the opposite side of the discharge port has an opposite magnetic pole direction to several of the first electromagnets.

[0014] Preferably, grooves are provided on the inner walls on both sides of the box body, and a second threaded rod is rotatably installed in the groove. A fifth motor for driving the second threaded rod to rotate is fixedly installed on both side walls of the box body, and a second threaded block is screwed on the second threaded rod, and the second threaded block is slidably installed in the groove, and the second threaded block is fixedly connected to the barrier cover.

[0015] Beneficial Effects

[0016] The present invention provides a grinding device for aluminum oxide production, which has the following beneficial effects:

[0017] The ground aluminum oxide can be screened by installing a sieve plate, and the aluminum oxide that meets the standards enters the discharge pipe through the lower hopper, and the aluminum oxide that does not meet the standards is retained on the sieve plate to be ground again. The grinding plate can be installed on the fixed cylinder by installing a fixed cylinder. The grinding plate can be installed so that the grinding assembly cooperates with the grinding plate to grind the aluminum oxide. The grinding plate is set as a plurality of fan-shaped plates hinged on the circular plate, and the plurality of fan-shaped plates are flipped downward so that the ground aluminum oxide powder falls onto the sieve plate. The fan-shaped plates can be driven to flip downward by installing a driving assembly. The aluminum oxide can be ground inside the barrier cover by installing a baffle cover to prevent the aluminum oxide from falling during the grinding process. The auxiliary unloading assembly can be installed so that the powdered aluminum oxide adhering to the grinding plate can be scraped off. The return assembly can be installed so that the aluminum oxide that falls onto the sieve plate and has a diameter larger than the mesh number of the sieve plate can be transported back to the top of the grinding plate by the return assembly and then falls, so that it can be ground again until the grinding standard is met.

[0018] By installing a third motor, starting the third motor can drive the rotating rod to rotate, thereby driving a number of cams to rotate. The striking rod is slidably connected to the cam, so that the striking rod can rise and fall with the rotation of the cam. When the striking rod drives the scraper to rise and there is a gap between it and the grinding plate, the fixed plate rotates to drive the scraper to rotate so as to scrape the aluminum oxide that falls onto the grinding plate through the feed hopper, thereby facilitating the grinding of the grinding roller. When the striking rod contacts the grinding plate, the driving end of the first motor drives the driving shaft to rotate, which can drive the second spur gear to rotate. The second spur gear is engaged with the second spur gear ring to drive the second spur gear ring to rotate, thereby driving the fixed plate and the cover body to rotate, thereby driving a number of striking rods and scrapers to rotate, thereby allowing the aluminum oxide powder adhering to the grinding plate to separate from the grinding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0021] Figure 3 for Figure 1 Cross-sectional view of the middle BB;

[0022] Figure 4 for Figure 1 A magnified schematic diagram of middle C;

[0023] Figure 5 for Figure 1 A magnified schematic diagram of D in the middle.

[0024] In the figure: 1, box; 2, screen plate; 3, baffle cover; 4, grinding plate; 41, first gear box; 42, first motor; 43, drive shaft; 44, first spur gear; 45, first spur ring; 46, mounting frame; 47, grinding roller; 48, cylinder; 5, second motor; 51, first threaded rod; 52, fixed cylinder; 53, first threaded block; 54, hinged rod; 6, second spur gear; 61, second spur ring; 62, fixed plate; 63, third motor; 64, rotating rod; 6 5. Cam; 66. Beating rod; 67. Lifting plate; 68. Tension spring; 69. Scraper; 7. Fourth motor; 71. Active bevel gear; 72. Driven bevel gear; 73. Rotating ring; 74. Rotating plate; 75. Gear cover; 8. Conveying box; 81. Conveying cover; 82. Pushing plate; 83. First electromagnet; 84. Second electromagnet; 85. Conveyor belt; 9. Fifth motor; 91. Groove; 92. Second threaded rod; 93. Second threaded block; 10. Feeding port; 11. Discharging port. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention, wherein the directional terms such as "upper" and "lower" mentioned herein are as follows: Figure 1 The orientation is used as a reference.

[0026] See also Figure 1-Figure 5 The present invention provides a technical solution: a grinding device for alumina production, comprising a box body 1, a feed hopper is installed on the top of the box body 1, a discharge pipe is installed on the bottom of the box body 1, and also comprises a sieve plate 2; the sieve plate 2 is installed in the box body 1, a lower hopper is fixedly installed on the bottom of the sieve plate 2, the bottom of the lower hopper is connected with the discharge pipe, a fixed cylinder 52 is fixedly installed on the sieve plate 2, a grinding plate 4 is installed on the top of the fixed cylinder 52, the grinding plate 4 comprises a circular plate and a fan-shaped plate, a plurality of fan-shaped plates are hinged on the circular plate, and a plurality of fan-shaped plates are in contact with each other, a driving assembly for driving a plurality of fan-shaped plates to flip downward is installed on the fixed cylinder 52, a baffle cover 3 is movably installed in the box body 1, the outer periphery of the grinding plate 4 is in contact with the baffle cover 3, a grinding assembly and an auxiliary feeding assembly are rotatably installed on the grinding plate 4; a return assembly is installed on the side wall of the box body 1.

[0027] By installing a feed hopper, unground alumina can be passed into the box body 1 through the feed hopper, and by installing a discharge pipe, the ground alumina powder can be discharged through the discharge pipe. By installing a sieve plate 2, the ground alumina can be screened, and the aluminum oxide that meets the standards enters the discharge pipe through the lower hopper, and the aluminum oxide that does not meet the standards is retained on the sieve plate 2 to be ground again. By installing a fixed cylinder 52, the grinding plate 4 can be installed on the fixed cylinder 52. By installing the grinding plate 4, the grinding assembly can cooperate with the grinding plate 4 to grind the alumina. By setting the grinding plate 4 as a plurality of fan-shaped plates hinged to On the circular plate, several sector plates flip downward to facilitate the falling of ground alumina powder onto the sieve plate 2. A driving assembly is installed to drive the sector plates to flip downward. A barrier cover 3 is installed to allow grinding inside the barrier cover 3 to prevent the alumina from falling during grinding. An auxiliary unloading assembly is installed to facilitate the scraping of powdered alumina adhering to the grinding plate 4. A return assembly is installed to allow the alumina that falls onto the sieve plate and has a diameter larger than the mesh size of the sieve plate 2 to be transported back to the top of the grinding plate 4 through the return assembly and then fall, so that it can be ground again until the grinding standard is met.

[0028] Furthermore, the grinding assembly includes a grinding roller 47, a first gear box 41 is fixedly installed on the top of the grinding plate 4, a first motor 42 is fixedly installed on the bottom of the first gear box 41, a driving shaft 43 is fixedly installed on the driving end of the first motor 42, a first spur gear 44 is fixedly installed on the top of the driving shaft 43, a first spur gear ring 45 meshing with the first spur gear 44 is rotatably installed on the first gear box 41, a mounting frame 46 is fixedly installed on the first spur gear ring 45, a cylinder 48 is installed on the mounting frame 46, and the grinding roller 47 is rotatably installed on the telescopic end of the cylinder 48.

[0029] By installing the first gear box 41, gears can be installed in the gear box, by installing the first motor 42, the first motor 42 can be started, the first motor 42 can drive the first spur gear 44 to rotate, and the first spur gear ring 45 can be driven to rotate by meshing with the first spur gear 44, thereby driving the mounting frame 46 to rotate, by installing the grinding roller 47, the grinding roller 47 is rotatably installed on the mounting frame 46, the rotation of the mounting frame 46 can drive the grinding roller 47 to rotate around the first gear box 41, and during the grinding process, the grinding roller 47 rotates by itself to achieve a better grinding effect, by installing the cylinder 48, the cylinder 48 is started, and the telescopic end of the cylinder 48 is extended and retracted to drive the grinding roller 47 to rise and fall, so as to adjust the position of the grinding roller 47 for grinding and feeding.

[0030] Furthermore, the auxiliary unloading component includes a scraper 69, a second spur gear 6 is fixedly mounted on the driving shaft 43 of the first motor 42, a second spur gear ring 61 meshing with the second spur gear 6 is rotatably mounted on the first gear box 41, a fixed plate 62 is fixedly mounted on the second spur gear ring 61, a cover body is mounted on the fixed plate 62, a top plate of the cover body is inclined, a plurality of striking rods 66 are mounted on the fixed plate 62, and the scrapers 69 are fixedly mounted on the bottom of the plurality of striking rods 66, and two adjacent scrapers 69 are in contact with each other.

[0031] By tilting the top plate of the cover body, aluminum oxide can be prevented from being retained on the top of the cover body. The driving end of the first motor 42 drives the driving shaft 43 to rotate, which can drive the second spur gear 6 to rotate. The second spur gear 6 is engaged with the second spur gear ring 61 to drive the second spur gear ring 61 to rotate, thereby driving the fixed plate 62 and the cover body to rotate, thereby driving a number of striking rods 66 and scrapers 69 to rotate, so that the aluminum oxide powder adhering to the grinding plate 4 can be scraped off.

[0032] Furthermore, a third motor 63 is fixedly mounted on the side wall of the cover body, a rotating rod 64 is rotatably mounted in the cover body, one end of the rotating rod 64 passes through the side wall of the cover body and is fixedly connected to the driving end of the third motor 63, a plurality of cams 65 are fixedly mounted on the rotating rod 64, a plurality of striking rods 66 are slidably connected to the cams 65, a plurality of striking rods 66 are fixedly mounted with lifting plates 67, and tension springs 68 are arranged between the plurality of lifting plates 67 and the fixed plate 62.

[0033] By installing a third motor 63, starting the third motor 63 can drive the rotating rod 64 to rotate, thereby driving a number of cams 65 to rotate. The striking rod 66 is slidably connected to the cam 65, so the striking rod 66 can rise and fall with the rotation of the cam 65. When the striking rod 66 drives the scraper 69 to rise and leaves a gap between it and the grinding plate 4, the fixed plate 62 is rotated to drive the scraper 69 to rotate so as to scrape the aluminum oxide that falls onto the grinding plate 4 through the feed hopper, thereby facilitating the grinding of it by the grinding roller 47. When a lifting plate 67 is installed, the lifting and lowering of the striking rod 66 can drive the lifting plate 67 to rise and fall. By installing a tension spring 68, when the lifting plate 67 falls to the lowest point and needs to rise, the lifting plate 67 can be pulled up under the action of the tension of the tension spring 68, thereby pulling the lifting rod up, so that the top of the lifting rod continues to slide along the surface of the cam 65.

[0034] Furthermore, the driving assembly includes a second motor 5, a second motor 5 is fixedly mounted on the central bottom wall of the screen plate 2, a first threaded rod 51 is rotatably mounted in a fixed cylinder 52, a driving end of the second motor 5 is fixedly connected to the first threaded rod 51, a first threaded block 53 is screwed on the first threaded rod 51, a plurality of hinged rods 54 are hinged on the first threaded block 53, the plurality of hinged rods 54 are hinged to a plurality of fan-shaped plates, a sliding opening is opened on the fixed cylinder 52, and a plurality of hinged rods 54 slide in the sliding opening.

[0035] By installing a second motor 5 and starting the second motor 5, the driving end of the second motor 5 rotates to drive the first threaded rod 51 to rotate, thereby driving the threaded block to rise and fall in the fixed cylinder 52. The threaded block can be lifted and lowered by hinged connecting rods to drive several connecting rods to be retracted and extended, thereby driving the grinding plate 4 to flip over. After the grinding plate 4 is flipped, it becomes an inclined surface to facilitate the falling of the ground alumina.

[0036] Furthermore, a rotating ring 73 is rotatably mounted on the sieve plate 2 , and a rotating plate 74 is fixedly mounted on the rotating ring 73 , and the bottom of the rotating plate 74 is in contact with the upper surface of the sieve plate 2 .

[0037] The rotating ring 73 is installed by rotating, and the rotating plate 74 can be driven to rotate, and the aluminum oxide falling onto the sieve plate 2 can be driven to move, so that the aluminum oxide powder with a small diameter and meeting the standards can pass through the sieve plate 2 and fall into the lower hopper.

[0038] Furthermore, a gear cover 75 is fixedly installed on the outer wall at the bottom of the fixed cylinder 52, and a driven bevel gear 72 is rotatably installed on the fixed cylinder 52 located inside the gear cover 75. The driven bevel gear 72 is fixedly connected to the rotating ring 73, and a driving bevel gear 71 meshing with the driven bevel gear 72 is rotatably installed inside the gear cover 75. A fourth motor 7 for driving the driving bevel gear 71 to rotate is fixedly installed on the side wall of the box body 1.

[0039] By installing the gear cover 75, the gear can be protected to prevent aluminum oxide from accumulating on the gear and affecting the use of the gear. By installing the fourth motor 7 and starting the fourth motor 7, the active bevel gear 71 can be driven to rotate. The active bevel gear 71 is meshed with the driven bevel gear 72 to drive the driven bevel gear 72 to rotate, thereby driving the rotating ring 73 to rotate.

[0040] Furthermore, the return material assembly includes a conveying box 8, which is fixedly installed on the side wall of the box body 1. A conveyor belt 85 is installed in the conveying box 8, and a plurality of conveying covers 81 are fixedly installed on the conveyor belt 85. A feed port 10 is opened on the bottom side wall of the box body 1, and a discharge port 11 is opened on the top side wall of the box body 1. The feed port 10 and the discharge port 11 are both connected to the interior of the plurality of conveying covers 81, and the bottom walls of the discharge port 11 and the feed port 10 are both set as inclined surfaces.

[0041] By installing a conveying box 8, the alumina with larger particles that do not meet the grinding standards on the screen plate 2 can be transported to the grinding site for re-grinding. By installing a conveyor belt 85, starting the conveyor belt 85 can drive several conveying covers 81 to move. By installing a conveying cover 81, it can be used to hold the alumina to be transported. By opening a discharge port 11 and a feed port 10, it is convenient for the alumina to enter the conveying cover 81 and be discharged from the conveying cover 81. By setting the bottom walls of the discharge port 11 and the feed port 10 as inclined surfaces, loading and unloading are facilitated.

[0042] Furthermore, a push plate 82 is slidably installed in each of the conveying covers 81, and a first electromagnet 83 is provided on each of the push plates 82. A pair of second electromagnets 84 is provided on the inner wall of the conveying box 8. The second electromagnet 84 located on the opposite side of the feed port 10 has the same magnetic pole direction as the first electromagnets 83, and the second electromagnet 84 located on the opposite side of the discharge port 11 has an opposite magnetic pole direction to the first electromagnets 83.

[0043] By installing a push plate 82, the movement of the push plate 82 can further facilitate material unloading. By providing a first electromagnet 83 and a second electromagnet 84, and by setting the second electromagnet 84 on the feed side to have the same magnetic pole direction as the first electromagnet 83, when loading, an attraction force will be generated between the first electromagnet 83 and the second magnet on the discharge side, which can drive the push plate 82 to reset, so that the aluminum oxide can enter the conveying cover 81. The second electromagnet 84 on the feed side is set to have a magnetic pole direction opposite to the first electromagnet 83. When unloading, a repulsive force will be generated between the second electromagnet 84 on the feed side and the first electromagnet 83, which can push the push plate 82 to move, thereby facilitating the discharge of all the aluminum oxide in the conveying cover 81, thereby greatly improving the grinding quality.

[0044] Furthermore, grooves 91 are provided on the inner walls on both sides of the box body 1, and a second threaded rod 92 is rotatably installed in the groove 91. A fifth motor 9 for driving the second threaded rod 92 to rotate is fixedly installed on both side walls of the box body 1. A second threaded block 93 is screwed on the second threaded rod 92, and the second threaded block 93 is slidably installed in the groove 91. The second threaded block 93 is fixedly connected to the barrier cover 3.

[0045] By installing the fifth motor 9, starting the fifth motor 9 drives the second threaded rod 92 to rotate, thereby driving the second threaded block 93 to move, and then driving the barrier cover 3 to rise and fall, so that the aluminum oxide on the barrier plate can be blocked during grinding to prevent it from falling before the grinding is completed, and after driving the barrier cover 3 to rise, the grinding plate 4 can be flipped over.

[0046] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0047] The working principle and use process of the present invention are as follows: when in use, the aluminum oxide to be ground is passed into the box body 1 through the feed hopper and falls onto the grinding plate 4. The first motor 42 is started to drive the first spur gear 44 to rotate, thereby driving the grinding roller 47 to rotate through the meshing of the first spur gear 44 and the first spur gear ring 45, so that the aluminum oxide on the grinding plate 4 can be ground. During this process, the second spur gear 6 rotates, and the meshing of the second spur gear 6 and the second spur gear ring 61 can drive the fixed plate 62 and the striking rod 66 to rotate. At this time, a gap is left between the striking rod 66 and the grinding plate 4, so that the grinding plate can be 4 is scraped flat for grinding. After grinding is completed, the cylinder 48 is started to drive the grinding roller 47 to rise and separate from the grinding plate 4. The third motor 63 is started to drive the rotating rod 64 to rotate, thereby driving the cam 65 to rotate, and then driving the striking rod 66 to descend. When the striking rod 66 descends to contact the grinding plate 4, it stops. The fixed plate 62 drives the striking rod 66 and the scraper 69 to rotate, thereby separating the aluminum oxide adhered to the grinding plate 4 from the grinding plate 4. The fifth motor 9 is started to drive the second threaded rod 92 to rotate, thereby driving the second threaded block 93 to rise to drive the baffle cover 3 to rise, and the fifth motor 9 is started. The second motor 5 drives the first threaded rod 51 to rotate, thereby driving the first threaded block 53 to rise and fall to drive the hinged rod 54 to move, and drive the grinding plate 4 to flip, so that the ground aluminum oxide on the grinding plate 4 can fall onto the screen plate 2, and the fourth motor 7 is started to drive the active bevel gear 71 to rotate, and the active bevel gear 71 is engaged with the driven bevel gear 72 to drive the driven bevel gear 72 to rotate, thereby driving the rotating ring 73 to rotate and driving the rotating plate 74 to rotate, so that the aluminum oxide that meets the grinding standards can enter the lower hopper through the screen plate 2, and the aluminum oxide that does not meet the standards can enter the conveyor along the inclined surface of the screen plate 2. Inside the cover 81, the conveyor belt 85 is started to drive the conveyor cover 81 to move, and the electromagnet is energized. When the conveyor cover 81 moves to the discharge port 11, a repulsive force is generated between the first electromagnet 83 and the second electromagnet 84, driving the push plate 82 to move, and pushing the alumina in the conveyor cover 81 into the box body 1 for re-grinding. When the conveyor belt 85 drives the conveyor cover 81 after unloading to return to the discharge port 11, the push plate 82 can be driven to reset and prepare for the next conveying under the action of the first electromagnet 83 and the second electromagnet 84, and the alumina powder that falls into the discharge hopper can be discharged through the discharge pipe.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for aluminum oxide production, comprising a housing (1), a feed hopper being installed on the top of the housing (1), and a discharge pipe being installed on the bottom of the housing (1), characterized in that: It also includes a sieve plate (2); the sieve plate (2) is installed in the box body (1); a lower hopper is fixedly installed at the bottom of the sieve plate (2); the bottom of the lower hopper is connected to the discharge pipe; a fixed cylinder (52) is fixedly installed on the sieve plate (2); a grinding plate (4) is installed on the top of the fixed cylinder (52); the grinding plate (4) includes a circular plate and a fan-shaped plate; a plurality of the fan-shaped plates are hinged on the circular plate, and the plurality of the fan-shaped plates are in contact with each other; a driving component for driving a plurality of the fan-shaped plates to flip downward is installed on the fixed cylinder (52); A baffle cover (3) is movably installed in the box body (1), the outer periphery of the grinding plate (4) is in contact with the baffle cover (3), and a grinding assembly and an auxiliary material discharge assembly are rotatably installed on the grinding plate (4); a return assembly is installed on the side wall of the box body (1), and the grinding assembly includes a grinding roller (47); a first gear box (41) is fixedly installed on the top of the grinding plate (4), a first motor (42) is fixedly installed on the bottom of the first gear box (41), a driving shaft (43) is fixedly installed on the driving end of the first motor (42), and the auxiliary material discharge assembly The component comprises a scraper (69), a second spur gear (6) is fixedly mounted on the driving shaft (43) of the first motor (42), a second spur gear ring (61) meshing with the second spur gear (6) is rotatably mounted on the first gear box (41), a fixing plate (62) is fixedly mounted on the second spur gear ring (61), a cover is mounted on the fixing plate (62), a plurality of striking rods (66) are mounted on the fixing plate (62), the scraper (69) is fixedly mounted on the bottom of the plurality of striking rods (66), and two adjacent scrapers (69) are fixedly mounted on the bottom of the plurality of striking rods (66). A third motor (63) is fixedly mounted on the side wall of the cover body, a rotating rod (64) is rotatably mounted in the cover body, one end of the rotating rod (64) passes through the side wall of the cover body and is fixedly connected to the driving end of the third motor (63), a plurality of cams (65) are fixedly mounted on the rotating rod (64), a plurality of striking rods (66) are slidably connected to the cams (65), a lifting plate (67) is fixedly mounted on the plurality of striking rods (66), and a tension spring (68) is arranged between the plurality of lifting plates (67) and the fixed plate (62).

2. A grinding device for aluminum oxide production according to claim 1, characterized in that: A first spur gear (44) is fixedly mounted on the top of the driving shaft (43); a first spur gear ring (45) meshing with the first spur gear (44) is rotatably mounted on the first gear box (41); a mounting frame (46) is fixedly mounted on the first spur gear ring (45); a cylinder (48) is mounted on the mounting frame (46); and the grinding roller (47) is rotatably mounted on the telescopic end of the cylinder (48).

3. A grinding device for aluminum oxide production according to claim 1, characterized in that: The driving assembly comprises a second motor (5), the second motor (5) is fixedly mounted on the central bottom wall of the sieve plate (2), a first threaded rod (51) is rotatably mounted in the fixed cylinder (52), a driving end of the second motor (5) is fixedly connected to the first threaded rod (51), a first threaded block (53) is screwed onto the first threaded rod (51), a plurality of hinged rods (54) are hinged onto the first threaded block (53), the plurality of hinged rods (54) are hinged onto the plurality of fan-shaped plates, a sliding opening is provided on the fixed cylinder (52), and the plurality of hinged rods (54) slide in the sliding opening.

4. A grinding device for aluminum oxide production according to claim 1, characterized in that: A rotating ring (73) is rotatably mounted on the sieve plate (2), a rotating plate (74) is fixedly mounted on the rotating ring (73), and the bottom of the rotating plate (74) is in contact with the upper surface of the sieve plate (2).

5. A grinding device for aluminum oxide production according to claim 4, characterized in that: A gear cover (75) is fixedly mounted on the outer wall of the bottom of the fixed cylinder (52); a driven bevel gear (72) is rotatably mounted on the fixed cylinder (52) located inside the gear cover (75); the driven bevel gear (72) is fixedly connected to the rotating ring (73); a driving bevel gear (71) meshing with the driven bevel gear (72) is rotatably mounted inside the gear cover (75); and a fourth motor (7) for driving the driving bevel gear (71) to rotate is fixedly mounted on the side wall of the housing (1).

6. A grinding device for aluminum oxide production according to claim 1, characterized in that: The return material assembly comprises a conveying box (8), the conveying box (8) is fixedly mounted on the side wall of the box body (1), a conveying belt (85) is installed in the conveying box (8), a plurality of conveying covers (81) are fixedly mounted on the conveying belt (85), a feed port (10) is provided on the bottom side wall of the box body (1), a discharge port (11) is provided on the top side wall of the box body (1), the feed port (10) and the discharge port (11) are both connected to the inside of the plurality of conveying covers (81), and the discharge port (11) and the bottom wall of the feed port (10) are both arranged as inclined surfaces.

7. A grinding device for aluminum oxide production according to claim 6, characterized in that: A push plate (82) is slidably installed in each of the conveying covers (81), and a first electromagnet (83) is provided on each of the push plates (82). A pair of second electromagnets (84) is provided on the inner wall of the conveying box (8), and the second electromagnet (84) located on the opposite side of the feed port (10) has the same magnetic pole direction as the first electromagnets (83), and the second electromagnet (84) located on the opposite side of the discharge port (11) has an opposite magnetic pole direction as the first electromagnets (83).

8. A grinding device for aluminum oxide production according to claim 1, characterized in that: The inner walls on both sides of the box body (1) are provided with grooves (91), and a second threaded rod (92) is rotatably installed in the groove (91). A fifth motor (9) for driving the second threaded rod (92) to rotate is fixedly installed on the inner walls on both sides of the box body (1). A second threaded block (93) is screwed onto the second threaded rod (92), and the second threaded block (93) is slidably installed in the groove (91). The second threaded block (93) is fixedly connected to the baffle cover (3).

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