Barite ore grinding device and method

Abstract

The application relates to the technical field of barite ore processing, and discloses a barite ore grinding and processing device and method, which comprises a screening cylinder and a grinding mechanism above the screening cylinder, a fixing frame is arranged between the screening cylinder and the grinding mechanism, a screening disc is rotationally connected to the inner wall of the screening cylinder, a screening rotating mechanism is arranged at the bottom of the screening cylinder, the screening rotating mechanism can make the screening disc rotate at high speed, slanted discharging cylinders are arranged on the two sides of the upper portion of the screening disc, one end of each of the discharging cylinders is fixedly connected with the inner wall of the screening cylinder, and the other end of each of the discharging cylinders is fixedly connected with a slanted grinding cylinder. The barite ore can be ground into powder, the powder can keep dynamic movement in the screening process, powder gathering can be effectively prevented, the screening efficiency is obviously improved, unqualified powder screened out can be automatically returned for secondary grinding, a closed loop is formed, and the overall working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of barite ore processing, and in particular to a barite ore grinding processing device and method. Background Art

[0002] Barite is the most common mineral of barium. It is composed of barium sulfate and is produced in low-temperature hydrothermal veins, such as quartz-barite veins, fluorite-barite veins, etc. It often coexists with galena, sphalerite, chalcopyrite, cinnabar, etc. It is a non-renewable resource. When used, the barite ore needs to be ground into powder.

[0003] A Chinese patent with announcement number CN222550994U discloses a grinding and screening device for barite ore, including: a screening box, an inclined screen is provided in the middle of the interior of the screening box, vertical plates are provided on both sides of the screen, a sliding groove is provided in the middle of the vertical plate, a screw rod is inserted in the sliding groove, one end of the screw rod is inserted into the screw motor outside the screening box, and a sliding block is provided on the screw rod. When the above device is screening, unqualified barite powder and some qualified barite powder will be mixed together and fall into the first storage box, resulting in the need for multiple screening, which seriously affects work efficiency.

[0004] In view of this, the present invention proposes a barite ore grinding processing device and method to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a barite ore grinding processing device and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The top of the discharging opening is located at the bottom of the discharging opening, and the charging aperture is formed. The discharging opening is located at the bottom of the discharging opening. The discharging opening is located at the bottom of the discharging opening. The charging aperture is set at 1. The charging aperture is set at the bottom of the discharging opening. The charging aperture is set at the

[0008] Furthermore, the grinding mechanism includes a grinding tank, a feed hopper is provided on the outer wall on one side above the grinding tank, and a drive shaft 1 is rotatably connected to the top of the grinding tank, a grinding drive motor is provided on the top of the drive shaft 1, and a grinding body is fixedly connected to the bottom end of the drive shaft 1, the distance between the outer wall of the grinding tank and the inner wall of the grinding tank gradually decreases from top to bottom, and a plurality of grinding teeth 1 are fixedly connected to the outer wall of the grinding tank and the inner wall of the grinding tank, and a discharge pipe is provided at the bottom end of the grinding tank, and the discharge pipe passes through the top of the screening cylinder and extends to the inside of the screening cylinder.

[0009] Furthermore, the screening rotating mechanism includes a second driving shaft, the second driving shaft is rotatably connected to the bottom of the screening drum, and a screening driving motor is provided at the bottom end of the second driving shaft, and the screening disc is fixedly connected to the top end of the second driving shaft.

[0010] Furthermore, the top of the screening drum is rotatably connected to a drive shaft three, and a secondary grinding drive motor is provided at the top of the drive shaft three, the bottom end of the drive shaft three is fixedly connected to a bevel gear one, and the outer cover of the drive shaft three is provided with a protective cylinder, the outer walls on both sides of the protective cylinder are rotatably connected to a drive shaft four, and one end of the drive shaft four is fixedly connected to a bevel gear two, and the bevel gear two is meshed with the bevel gear one.

[0011] Furthermore, a conical grinding table is provided inside the grinding cylinder, and the narrow end of the conical grinding table faces the discharge cylinder, and a plurality of grinding teeth 2 are fixedly connected to the inner wall of the grinding cylinder and the outer wall of the conical grinding table, and the other end of the drive shaft 4 passes through the grinding cylinder and is fixedly connected to the outer wall of one side of the conical grinding table.

[0012] Furthermore, a rotating column is rotatably connected between the outer wall of the other side of the conical grinding table and the inner wall of the conical cavity, and the outer wall of the rotating column is fixedly connected to the spiral auger blade, and the spiral auger blade fits the inner wall of the conical cavity.

[0013] Furthermore, the second outer wall of the drive shaft is rotatably connected to a conical unloading platform, and the conical unloading platform is located below the screening disc. The lower outer wall of the conical unloading platform is fixedly connected to the inside of the screening drum, and a discharge pipe is provided at the bottom of the conical unloading platform. The bottom end of the discharge pipe passes through the bottom of the screening drum, and an arc track is provided directly above the discharge pipe, and the arc track is fixedly connected to the inner wall of the bottom of the screening drum.

[0014] Furthermore, two inclined scrapers are symmetrically fixedly connected to the two outer walls of the drive shaft, and the inclined scrapers are both in contact with the upper surface of the conical unloading platform, and the bottom ends of the inclined scrapers are fixedly connected to horizontal scrapers that are in contact with the bottom of the conical unloading platform.

[0015] Furthermore, a through groove is provided at the bottom of the horizontal scraper, and a folding plate is slidably connected to the inner wall of the through groove, one end of the folding plate is tightly attached to the inner wall of the screening cylinder, and a connecting spring is fixedly connected between the folding plate and the inner wall of the through groove, and a toggle rod is fixedly connected to the outer wall of the top of the folding plate.

[0016] A method for using a barite ore grinding and processing device, the specific steps are as follows:

[0017] S1. Primary grinding and centrifugal screening: After the barite ore is ground into powder by the grinding mechanism, it falls into the high-speed rotating screening disk. Under the action of centrifugal force, the powder gathers on the inner wall of the screening disk, and the conical grinding table in the grinding cylinder rotates at the same time;

[0018] S2. Powder circulation conveying: The spiral bucket shovels the powder accumulated on the inner wall of the screening disc into the inclined discharge barrel. The conical grinding table drives the spiral auger blades through the rotating column to deliver the powder in the conical cavity to the grinding barrel.

[0019] S3, secondary grinding and screening: After the powder enters the grinding cylinder, it falls into the gap between the outer wall of the conical grinding table and the inner wall of the grinding cylinder, and is secondary ground by the rotating grinding teeth. The ground powder returns to the screening disk through the discharge port for further screening;

[0020] S4. Collection of qualified powder: The qualified powder falls into the conical discharge table, and is guided by the rotating inclined scraper, horizontal scraper and folding plate, and finally discharged through the discharge pipe.

[0021] The beneficial effects of the present invention are:

[0022] The present invention can grind barite ore into powder and keep the powder in dynamic motion during the screening process, effectively preventing powder aggregation and significantly improving screening efficiency. At the same time, the unqualified powder screened out can be automatically returned for secondary grinding, forming a closed-loop cycle, thereby greatly improving overall work efficiency.

[0023] The present invention can scrape off the powder on the surface of the conical unloading platform through the horizontal scraper and the inclined scraper. At the same time, through the cooperation of the folding plate and the arc track, the powder gathered on the bending of the folding plate can be fully discharged through the discharge pipe to avoid residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a barite ore grinding and processing device;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of a grinding tank of a barite ore grinding processing device;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of a screening drum of a barite ore grinding and processing device;

[0027] Figure 4 This is a schematic diagram of the screening disc structure of a barite ore grinding and processing device;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the grinding cylinder, discharge cylinder and conical grinding table of a barite ore grinding and processing device;

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of a protective tube of a barite ore grinding and processing device;

[0030] Figure 7 This is a schematic diagram of the conical discharge table structure of a barite ore grinding and processing device;

[0031] Figure 8 This is a schematic diagram of the bottom structure of a horizontal scraper of a barite ore grinding and processing device;

[0032] Figure 9 This is a schematic diagram of the state changes of the folding plate of a barite ore grinding and processing device.

[0033] Figure: 1, screening drum; 2, fixed frame; 3, grinding tank; 4, feed hopper; 5, grinding drive motor; 6, secondary grinding drive motor; 7, screening drive motor; 8, grinding tooth 1; 9, grinding body; 10, drive shaft 1; 11, discharge pipe; 12, conical discharge platform; 13, drive shaft 2; 14, grinding drum; 15, protective cylinder; 16, discharge drum; 17, screening plate; 18, curved track; 19, discharge pipe; 2 0. Spiral bucket; 21. Connecting block; 22. Drive shaft three; 23. Feed port; 24. Spiral auger blade; 25. Rotating column; 26. Conical cavity; 27. Conical grinding table; 28. Grinding tooth two; 29. ​​Drive shaft four; 30. Discharge port; 31. Bevel gear one; 32. Bevel gear two; 33. Toggle lever; 34. Folding plate; 35. Horizontal scraper; 36. Inclined scraper; 37. Connecting spring; 38. Through slot. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0035] Reference Figures 1-6A barite ore grinding and processing device comprises a screening drum 1 and a grinding mechanism above it, a fixed frame 2 is provided between the screening drum 1 and the grinding mechanism, the inner wall of the screening drum 1 is rotatably connected to a screening disc 17, and a screening rotating mechanism is provided at the bottom of the screening drum 1, the screening rotating mechanism can make the screening disc 17 rotate at a high speed, and inclined discharge barrels 16 are provided on both sides above the screening disc 17, and one end of the discharge barrel 16 is fixedly connected to the inner wall of the screening drum 1, and the other end of the discharge barrel 16 is fixedly connected to the inclined grinding drum 14, and a feed port 23 is provided on the top of the discharge barrel 16, and the feed port The inner walls at both ends of 23 are set as inclined surfaces, and a spiral bucket 20 is set above the feed port 23. A connecting block 21 is fixedly connected between the spiral bucket 20 and the discharge barrel 16. The bottom end of the spiral bucket 20 is tightly attached to the inner wall of the bottom of the screening disc 17. A conical cavity 26 is set inside the discharge barrel 16, and the wide end of the conical cavity 26 faces the grinding barrel 14 and is connected to the grinding barrel 14. A discharge port 30 is opened on the outer wall of the bottom of the drooping end of the grinding barrel 14. The barite ore is ground by the grinding mechanism. At the same time, the screening rotating mechanism causes the screening disc 17 to rotate at high speed. The powder will fall into the high-speed rotating screening disc 17, and the high-speed rotating screening disc 17 will generate centrifugal force, so that the powder in the screening disc 17 will move toward the inner wall of the screening disc 17, so that some qualified powder will be screened out, and the unqualified powder and the remaining qualified powder will be gathered on the inner wall of the screening disc 17, and the bottom end of the spiral bucket 20 will contact the inner wall of the bottom periphery of the screening disc 17, so that when the screening disc 17 rotates at a high speed, the spiral bucket 20 will scoop up the qualified and unqualified powders gathered on the inner wall of the screening disc 17 together, and as more and more powder is scooped up, the powder will be shoveled out. It can push the powder in the spiral bucket 20 to move upward, and finally enter the conical cavity 26 of the discharge barrel 16 through the feed port 23. Since the wide end of the conical cavity 26 faces the grinding barrel 14 and is connected to the grinding barrel 14, the powder will enter the inclined grinding barrel 14 under the action of gravity, and finally fall into the central area of ​​the screening disk 17 through the discharge port 30 at the drooping end of the grinding barrel 14. Then, under the action of centrifugal force, the powder is gathered again on the inner wall of the screening disk 17, thereby maintaining the dynamic movement of the powder during the screening process, effectively preventing powder aggregation, and significantly improving the screening efficiency.

[0036] As a further solution of the present invention, the grinding mechanism includes a grinding tank 3, a feed hopper 4 is provided on the outer wall of one side above the grinding tank 3, and the top of the grinding tank 3 is rotatably connected to a drive shaft 10, a grinding drive motor 5 is provided on the top of the drive shaft 10, and a grinding body 9 is fixedly connected to the bottom of the drive shaft 10, the spacing between the outer wall of the grinding body 9 and the inner wall of the grinding tank 3 gradually decreases from top to bottom, and the outer wall of the grinding body 9 and the inner wall of the grinding tank 3 are fixedly connected with a plurality of grinding teeth 8, and a discharge pipe 11 is provided at the bottom of the grinding tank 3, and the discharge pipe 11 passes through the top of the screening cylinder 1 and extends When it enters the screening drum 1, the grinding drive motor 5 drives the grinding body 9 with the multiple grinding teeth 8 on its outer wall to rotate through the driving shaft 10, and then the barite ore is put into the grinding tank 3 through the feed hopper 4, and then under the action of gravity, it will enter the gap between the outer wall of the grinding body 9 and the inner wall of the grinding tank 3. Since the distance between the outer wall of the grinding body 9 and the inner wall of the grinding tank 3 gradually decreases from top to bottom, the barite ore in the gap will be ground into powder by the grinding teeth 8, and then the powder enters the screening disk 17 through the discharge pipe 11 and is screened by the high-speed rotating screening disk 17.

[0037] As a further solution in the present invention, the screening rotation mechanism includes a driving shaft 2 13, which is rotatably connected to the bottom of the screening drum 1, and a screening drive motor 7 is provided at the bottom of the driving shaft 2 13, and a screening disc 17 is fixedly connected to the top of the driving shaft 2 13. The screening drive motor 7 rotates the screening disc 17 at high speed through the driving shaft 2 13, thereby screening the powder in the screening disc 17.

[0038] As a further solution in the present invention, the top of the screening drum 1 is rotatably connected to a drive shaft three 22, and a secondary grinding drive motor 6 is provided at the top of the drive shaft three 22, the bottom end of the drive shaft three 22 is fixedly connected to a bevel gear one 31, and the outer cover of the drive shaft three 22 is provided with a protective cylinder 15, the outer walls on both sides of the protective cylinder 15 are rotatably connected to a drive shaft four 29, and one end of the drive shaft four 29 is fixedly connected to a bevel gear two 32, and the bevel gears two 32 are meshed with the bevel gear one 31, and the secondary grinding drive motor 6 rotates the bevel gear one 31 through the drive shaft three 22. Because the bevel gears two 32 on the two drive shafts four 29 are meshed with the bevel gear one 31, the drive shaft four 29 can be rotated through the meshing transmission of the bevel gear two 32 and the bevel gear one 31.

[0039] As a further solution in the present invention, a conical grinding table 27 is provided inside the grinding cylinder 14, and the narrow end of the conical grinding table 27 faces the discharge cylinder 16. The inner wall of the grinding cylinder 14 and the outer wall of the conical grinding table 27 are fixedly connected with a plurality of grinding teeth 28. The other end of the driving shaft 4 29 passes through the grinding cylinder 14 and is fixedly connected to the outer wall of one side of the conical grinding table 27. The powder entering the grinding cylinder 14 will be in the gap between the conical grinding table 27 and the grinding cylinder 14, and the driving shaft 4 29 will cause the conical grinding table 27 to rotate. Because the powder will contain unqualified powders, the grinding teeth 28 can grind these unqualified powders for a second time to make them meet the standards.

[0040] As a further solution in the present invention, a rotating column 25 is rotatably connected between the outer wall of the other side of the conical grinding table 27 and the inner wall of the conical cavity 26, and the outer wall of the rotating column 25 is fixedly connected to the spiral auger blade 24, and the spiral auger blade 24 fits the inner wall of the conical cavity 26. The rotating conical grinding table 27 will cause the spiral auger blade 24 to rotate synchronously through the rotating column 25. Since the spiral auger blade 24 fits the inner wall of the conical cavity 26, the powder in the conical cavity 26 can be continuously input into the grinding cylinder 14, and the powder can be prevented from getting stuck and unable to enter the grinding cylinder 14.

[0041] Working principle: The grinding drive motor 5 drives the grinding body 9 with the multiple grinding teeth 8 on its outer wall to rotate through the driving shaft 10, and then the barite ore is put into the grinding tank 3 through the feed hopper 4, and then enters the gap between the outer wall of the grinding body 9 and the inner wall of the grinding tank 3 under the action of gravity. Since the distance between the outer wall of the grinding body 9 and the inner wall of the grinding tank 3 gradually decreases from top to bottom, the barite ore in the gap will be ground into powder by the grinding teeth 8, and then the powder enters the screening disk 17 through the discharge pipe 11. At the same time, the screening drive motor 7 drives the screening disk 17 to rotate at a high speed through the driving shaft 2 13, thereby screening the powder in the screening disk 17, and the ground powder will fall into the high-speed rotating The sieve disc 17 rotates at a high speed, and the centrifugal force generated by the high-speed rotating sieve disc 17 causes the powder in the sieve disc 17 to move toward the inner wall of the sieve disc 17, so that some qualified powder will be screened out, and the unqualified powder and the remaining qualified powder will be gathered on the inner wall of the sieve disc 17, and the bottom end of the spiral bucket 20 is in contact with the inner wall of the bottom periphery of the sieve disc 17, so that when the sieve disc 17 rotates at a high speed, the spiral bucket 20 will scoop up the qualified and unqualified powders gathered on the inner wall of the sieve disc 17, and as more and more powder is scooped up, the powder in the spiral bucket 20 can be pushed to move upward, and finally enter the conical cavity 26 of the discharge barrel 16 through the feed port 23. Because the wide end of the conical cavity 26 faces the grinding The cylinder 14 is connected to the grinding cylinder 14, so that the powder will enter the inclined grinding cylinder 14 under the action of gravity, and finally fall into the central area of ​​the screening disk 17 through the discharge port 30 at the drooping end of the grinding cylinder 14. Then, under the action of centrifugal force, the powder is gathered again on the inner wall of the screening disk 17, thereby maintaining the dynamic movement of the powder during the screening process, effectively preventing the powder from gathering, and significantly improving the screening efficiency; at the same time, in the above process, the secondary grinding drive motor 6 rotates the bevel gear 1 31 through the drive shaft 3 22, because the bevel gear 2 32 on the two drive shafts 4 29 is meshed with the bevel gear 1 31, so that the drive shaft 4 29 can be rotated through the meshing transmission of the bevel gear 2 32 and the bevel gear 1 31, and the drive shaft Four 29 will make the conical grinding table 27 in the grinding cylinder 14 rotate, and the rotating conical grinding table 27 will make the spiral auger blades 24 rotate synchronously through the rotating column 25. Because the spiral auger blades 24 fit the inner wall of the conical cavity 26, the powder in the conical cavity 26 can be continuously input into the grinding cylinder 14, and the powder can be prevented from getting stuck and unable to enter the grinding cylinder 14. The powder that enters the grinding cylinder 14 will be in the gap between the conical grinding table 27 and the grinding cylinder 14, and the driving shaft four 29 will make the conical grinding table 27 rotate. Because the powder will contain unqualified powders, the grinding teeth two 28 can grind these unqualified powders for a second time to make them meet the standards, forming a closed cycle, which greatly improves the overall work efficiency.

[0042] Reference Figure 3 、 Figure 7 、 Figure 8 and Figure 9 As a further solution in the present invention, the outer wall of the driving shaft 2 13 is rotatably connected to the conical unloading platform 12, and the conical unloading platform 12 is located below the screening disc 17. The outer wall below the conical unloading platform 12 is fixedly connected to the inside of the screening drum 1, and a discharge pipe 19 is provided at the bottom of the conical unloading platform 12. The bottom end of the discharge pipe 19 passes through the bottom of the screening drum 1, and an arc track 18 is provided directly above the discharge pipe 19, and the arc track 18 is fixedly connected to the inner wall of the bottom of the screening drum 1.

[0043] As a further solution in the present invention, two inclined scrapers 36 are symmetrically fixedly connected to the outer wall of the driving shaft 2 13, and the inclined scrapers 36 are all in contact with the upper surface of the conical unloading platform 12. The bottom ends of the inclined scrapers 36 are fixedly connected with horizontal scrapers 35 that are in contact with the bottom of the conical unloading platform 12. The qualified powder screened out by the screening disk 17 will fall on the surface of the conical unloading platform 12. At the same time, the driving shaft 2 13 will rotate with the inclined scrapers 36 and the horizontal scrapers 35, so that the powder on the surface of the conical unloading platform 12 can be scraped off, so that the powder falls on the bottom of the conical unloading platform 12 to avoid adhering to the surface of the conical unloading platform 12.

[0044] As a further solution in the present invention, a through groove 38 is provided at the bottom of the horizontal scraper 35, and the inner wall of the through groove 38 is slidably connected to a folding plate 34, one end of the folding plate 34 is in close contact with the inner wall of the screening drum 1, and a connecting spring 37 is fixedly connected between the folding plate 34 and the inner wall of the through groove 38, and a toggle rod 33 is fixedly connected to the outer wall of the top of the folding plate 34. The rotating horizontal scraper 35 will rotate synchronously with the folding plate 34, so that the folding plate 34 cooperates with the horizontal scraper 35 to remove the powder on the bottom of the conical unloading table 12. The powder is scraped and gathered at the bend of the folding plate 34, and during the rotation of the folding plate 34, the toggle rod 33 on the folding plate 34 will intermittently contact the arc track 18 above the discharge pipe 19. In the process of contact to separation, the arc track 18 applies force to the folding plate 34 through the toggle rod 33, causing it to retract into the through groove 38, so that the powder gathered at the bend of the folding plate 34 will fall into the discharge pipe 19 and then be discharged through the discharge pipe 19, avoiding any powder residue on the conical discharge table 12.

[0045] A method for using a barite ore grinding and processing device, the specific steps are as follows:

[0046] S1. Primary grinding and centrifugal screening: After the barite ore is ground into powder by the grinding mechanism, it falls into the high-speed rotating screening plate 17. Under the action of centrifugal force, the powder gathers on the inner wall of the screening plate 17, and the conical grinding table 27 in the grinding cylinder 14 rotates at the same time;

[0047] S2. Powder circulation conveying: The spiral bucket 20 shovels the powder accumulated on the inner wall of the screening disc 17 into the inclined discharge barrel 16. The conical grinding table 27 drives the spiral auger blade 24 through the rotating column 25 to convey the powder in the conical cavity 26 to the grinding barrel 14.

[0048] S3, secondary grinding and screening: After the powder enters the grinding cylinder 14, it falls into the gap between the outer wall of the conical grinding table 27 and the inner wall of the grinding cylinder 14, and is secondary ground by the rotating grinding teeth 28. The ground powder returns to the screening plate 17 through the discharge port 30 for further screening;

[0049] S4. Collection of qualified powder: The qualified powder after screening falls into the conical discharge platform 12, and is guided by the rotating inclined scraper 36, the horizontal scraper 35 and the folding plate 34, and is finally discharged through the discharge pipe 19.

[0050] Working principle: The qualified powder screened out by the screening disc 17 will fall on the surface of the conical discharge platform 12. At the same time, the driving shaft 2 13 will rotate with the inclined scraper 36 and the horizontal scraper 35, so as to scrape the powder on the surface of the conical discharge platform 12 and make the powder fall to the bottom of the conical discharge platform 12 to avoid adhering to the surface of the conical discharge platform 12. The rotating horizontal scraper 35 will rotate synchronously with the folding plate 34, so that the folding plate 34 cooperates with the horizontal scraper 35 to scrape the powder on the bottom of the conical discharge platform 12. The powder is scraped and gathered at the bend of the folding plate 34, and during the rotation of the folding plate 34, the toggle rod 33 on the folding plate 34 will intermittently contact the arc track 18 above the discharge tube 19. In the process of contact to separation, the arc track 18 applies force to the folding plate 34 through the toggle rod 33, causing it to retract into the through groove 38, so that the powder gathered at the bend of the folding plate 34 will fall into the discharge tube 19 and then be discharged through the discharge tube 19, so as to avoid powder residue on the conical discharge table 12.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A barite ore grinding processing device, comprising a screening drum (1) and a grinding mechanism above the screening drum (1), a fixing frame (2) being provided between the screening drum (1) and the grinding mechanism, characterized in that: The inner wall of the screening drum (1) is rotatably connected to a screening disc (17), and a screening rotating mechanism is provided at the bottom of the screening drum (1), and the screening rotating mechanism can make the screening disc (17) rotate at a high speed. Inclined discharge barrels (16) are provided on both sides above the screening disc (17), and one end of the discharge barrel (16) is fixedly connected to the inner wall of the screening drum (1), and the other end of the discharge barrel (16) is fixedly connected to an inclined grinding drum (14), and a feed port (23) is provided on the top of the discharge barrel (16). The feed port (23) ) The inner walls at both ends are arranged as inclined surfaces, and a spiral bucket (20) is arranged above the feed port (23), and a connecting block (21) is fixedly connected between the spiral bucket (20) and the discharge barrel (16), and the bottom end of the spiral bucket (20) is tightly attached to the bottom inner wall of the screening plate (17), and a conical cavity (26) is arranged inside the discharge barrel (16), and the wide end of the conical cavity (26) faces the grinding barrel (14) and is connected to the grinding barrel (14), and a discharge port (30) is opened on the outer wall of the bottom of the drooping end of the grinding barrel (14).

2. A barite ore grinding processing device according to claim 1, characterized in that, The grinding mechanism comprises a grinding jar (3), a feed hopper (4) is provided on the outer wall of one side above the grinding jar (3), and a driving shaft (10) is rotatably connected to the top of the grinding jar (3), a grinding driving motor (5) is provided on the top of the driving shaft (10), and a grinding body (9) is fixedly connected to the bottom of the driving shaft (10), the spacing between the outer wall of the grinding body (9) and the inner wall of the grinding jar (3) gradually decreases from top to bottom, and a plurality of grinding teeth (8) are fixedly connected to the outer wall of the grinding body (9) and the inner wall of the grinding jar (3), and a discharge pipe (11) is provided at the bottom of the grinding jar (3), and the discharge pipe (11) passes through the top of the screening cylinder (1) and extends into the interior of the screening cylinder (1).

3. A barite ore grinding processing device according to claim 2, characterized in that, The screening rotating mechanism comprises a second driving shaft (13), the second driving shaft (13) being rotatably connected to the bottom of the screening drum (1), and a screening driving motor (7) being provided at the bottom end of the second driving shaft (13), and the screening disc (17) being fixedly connected to the top end of the second driving shaft (13).

4. A barite ore grinding and processing device according to claim 1, characterized in that, The top of the screening drum (1) is rotatably connected to a driving shaft three (22), and a secondary grinding driving motor (6) is provided at the top of the driving shaft three (22), the bottom end of the driving shaft three (22) is fixedly connected to a bevel gear one (31), and the outer cover of the driving shaft three (22) is provided with a protective cylinder (15), the outer walls of both sides of the protective cylinder (15) are rotatably connected to the driving shaft four (29), and one end of the driving shaft four (29) is fixedly connected to the bevel gear two (32), and the bevel gear two (32) is meshed with the bevel gear one (31).

5. A barite ore grinding and processing device according to claim 4, characterized in that, A conical grinding table (27) is provided inside the grinding cylinder (14), and the narrow end of the conical grinding table (27) faces the discharge cylinder (16). The inner wall of the grinding cylinder (14) and the outer wall of the conical grinding table (27) are fixedly connected with a plurality of grinding teeth (28). The other end of the driving shaft (29) passes through the grinding cylinder (14) and is fixedly connected to the outer wall of one side of the conical grinding table (27).

6. A barite ore grinding and processing device according to claim 5, characterized in that, A rotating column (25) is rotatably connected between the outer wall of the other side of the conical grinding table (27) and the inner wall of the conical cavity (26), and the outer wall of the rotating column (25) is fixedly connected to the spiral auger blade (24), and the spiral auger blade (24) is in contact with the inner wall of the conical cavity (26).

7. A barite ore grinding and processing device according to claim 3, characterized in that, The outer wall of the second driving shaft (13) is rotatably connected to a conical discharge platform (12), and the conical discharge platform (12) is located below the screening disc (17). The outer wall below the conical discharge platform (12) is fixedly connected to the inside of the screening drum (1), and a discharge pipe (19) is provided at the bottom of the conical discharge platform (12). The bottom end of the discharge pipe (19) passes through the bottom of the screening drum (1), and an arc track (18) is provided directly above the discharge pipe (19), and the arc track (18) is fixedly connected to the inner wall of the bottom of the screening drum (1).

8. A barite ore grinding and processing device according to claim 7, characterized in that, Two inclined scrapers (36) are symmetrically fixedly connected to the outer wall of the second drive shaft (13), and the inclined scrapers (36) are all in contact with the upper surface of the conical unloading platform (12). The bottom ends of the inclined scrapers (36) are all fixedly connected to a horizontal scraper (35) in contact with the bottom of the conical unloading platform (12).

9. A barite ore grinding and processing device according to claim 8, characterized in that, The bottom of each horizontal scraper (35) is provided with a through slot (38), and the inner wall of the through slot (38) is slidably connected to a folding plate (34), one end of the folding plate (34) is in close contact with the inner wall of the screening drum (1), and a connecting spring (37) is fixedly connected between the folding plate (34) and the inner wall of the through slot (38), and a toggle rod (33) is fixedly connected to the outer wall of the top of the folding plate (34).

10. The method for using the barite ore grinding device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1. Primary grinding and centrifugal screening: After the barite ore is ground into powder by the grinding mechanism, it falls into the high-speed rotating screening plate (17). Under the action of centrifugal force, the powder gathers on the inner wall of the screening plate (17), and the conical grinding table (27) in the grinding cylinder (14) rotates at the same time; S2, powder circulation conveying: the spiral bucket (20) shovels the powder accumulated on the inner wall of the screening plate (17) into the inclined discharge barrel (16), and the conical grinding table (27) drives the spiral auger blade (24) through the rotating column (25) to convey the powder in the conical cavity (26) to the grinding barrel (14); S3, secondary grinding and screening: After the powder enters the grinding cylinder (14), it falls into the gap between the outer wall of the conical grinding table (27) and the inner wall of the grinding cylinder (14), and is secondary ground by the rotating grinding teeth (28). The ground powder returns to the screening plate (17) through the discharge port (30) and is screened again; S4. Collection of qualified powder: The powder that has passed the screening falls into the conical discharge table (12), and is guided by the rotating inclined scraper (36), the horizontal scraper (35) and the folding plate (34), and is finally discharged through the discharge pipe (19).

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