Grinding equipment for lithium carbonate production

Abstract

The invention relates to the technical field of lithium carbonate powder production and processing equipment, and discloses lithium carbonate production grinding equipment which comprises a shell, a plurality of grinding rollers are arranged on the inner side of the shell, and a grinding table is arranged at the bottom of the shell. According to the invention, the plurality of material distribution pipes are used for distributing materials respectively, so that the arranged materials are close to the center of the grinding table when being in contact with the adjacent grinding rollers under the condition that the arranged materials are not stacked with the materials on the grinding table, and the situation that part of the materials are close to the edge of the grinding table due to different rotation angles when being in contact with the grinding rollers is avoided; the adjusting mechanism is matched to adjust the magnetic force of the electromagnet according to the rotating speed of the grinding table, adjust the size of the opening of the shunting pipe sealed by the sealing plate and adjust the arrangement width of the materials according to the permanent magnet and the second elastic piece, and change the arrangement position of the materials after the opening is reduced; and the grinding quality and degree consistency of the materials are further improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium carbonate powder production and processing equipment, and in particular to a grinding device for lithium carbonate production. Background Art

[0002] Lithium carbonate is a white crystalline substance, which is widely used in power batteries, energy storage and medical fields. The process of extracting lithium from ore to prepare lithium carbonate using lithium mica concentrate as raw material requires a series of continuous processes such as roasting, grinding, leaching, purification and carbonization. Usually, vertical grinding equipment is used to grind lithium carbonate raw materials. The existing vertical grinding equipment includes a grinding table and a grinding roller. The grinding table is driven by a corresponding motor and a reduction gearbox. The bottom roller surface of the grinding roller is close to the top surface of the grinding table and is driven by a corresponding motor. The lithium carbonate raw material is distributed at the rotation center of the grinding table through a distribution hopper. The material rotates under the drive of the rotating grinding table and moves to the edge of the grinding table under the action of centrifugal force. The grinding operation is completed after the grinding roller and the grinding table are rolled and ground together. The ground material continues to move to the outside of the grinding table, and an air ring is formed between the grinding table and the shell of the equipment through the air supply mechanism. The fine powder of the material at the air ring is transported by the high-speed airflow to the powder selector at the top of the shell, and the large particles of the material fall at the air ring, and are re-ground through the scraper and elevator, or the material is brought to the top of the shell, and the qualified finished products are selected by the powder selector, and the unqualified large particles are mixed with new materials through the distribution hopper and re-ground.

[0003] However, during the use of traditional vertical grinding equipment, the material arranged on the grinding table is in a circular shape, and the lithium carbonate raw material on the ring on the circular edge is driven by the grinding table and centrifugally moved toward the edge. Since the distance angle between the material on the ring and the grinding roller is different, that is, the material on the ring with the same radius needs to rotate at different angles to contact the grinding roller. The material with a large rotation angle slides toward the edge of the grinding table when it contacts the grinding roller under the action of centrifugation. As a result, the material at different positions on the ring with the same radius contacts the grinding roller at different positions, and the material with a large angle to the grinding roller is closer to the edge of the grinding table, resulting in a reduction in the time that this part of the material stays on the grinding table, resulting in a reduction in the number of times some of the material is ground, affecting the quality of grinding, and increasing the amount of material that needs to be recovered and re-ground, resulting in a decrease in the grinding efficiency of the lithium carbonate raw material. Summary of the invention

[0004] The present application proposes a grinding device for lithium carbonate production, which has the advantages of ensuring the number of contacts between the material and the grinding roller and the stability of the grinding process, and is used to solve the problem of different numbers of contacts between the material and the grinding roller at different positions on the ring.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a grinding equipment for lithium carbonate production, comprising a shell, a plurality of grinding rollers are arranged on the inner side of the shell, a grinding table is arranged at the bottom of the shell, a distribution hopper is arranged at the top of the inner side of the shell, a diversion pipe is fixedly connected to the bottom of the distribution hopper, the number of the diversion pipes is set to be several and the number is adapted to the number of grinding rollers, the diversion pipe is used to divert the material in the distribution hopper, and the diversion pipe includes an inclined guide portion and a vertically arranged distribution portion.

[0006] The distribution part of the shunt pipe is offset from the center of the grinding table, and the diameter and position of the distribution part are adapted to the radial movement distance of the discharged material when it is rotated and centrifugally moved to contact the adjacent grinding roller, so that the position where the arranged material contacts the grinding roller is the side of the grinding roller close to the center of the grinding table, and the arranged material and the material retained between two adjacent grinding rollers are staggered in the circumferential direction of the grinding table. The beneficial effects of the present invention are as follows:

[0007] The present application provides a grinding device for lithium carbonate production, which discharges the material in the distribution hopper to the rear of several grinding rollers in the material moving direction through a diverter pipe, so that the material discharged by the diverter pipe rotates under the drive of the grinding table and moves to the outside of the grinding table under the action of centrifugal force. When the material contacts the adjacent grinding roller in front, the material is located on the inner side of the grinding roller close to the grinding table, avoiding the different centrifugal movement distances of the material and the grinding roller when contacting due to the circular distribution material, so that the material is as close to the center of the grinding table as possible, ensuring the time the material stays on the grinding table, and increasing the number of times the material contacts the grinding roller, thereby ensuring the quality of the lithium carbonate raw material grinding, and the spiral trajectory formed by the material of the distribution material is staggered with the spiral trajectory of the material remaining between two adjacent grinding rollers, avoiding the stacking of the material, and the width of the material is within the rated range, further increasing the number of times the material at the same position can contact the grinding roller, thereby achieving the effect of improving the grinding quality and uniformity of the lithium carbonate raw material grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work:

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0010] Figure 2 This is a schematic diagram of the rotation direction of the grinding table of the present invention;

[0011] Figure 3 It is a structural schematic diagram of the adjustment plate of the present invention;

[0012] Figure 4 It is a schematic diagram of the cross-section structure of the connecting pipe of the present invention;

[0013] Figure 5 It is a schematic cross-sectional view of the structure of the adjustment plate of the present invention;

[0014] Figure 6 It is a schematic cross-sectional view of the structure of the sliding rod of the present invention;

[0015] Figure 7 It is a schematic cross-sectional view of the structure of the closing plate of the present invention;

[0016] Figure 8 It is a schematic cross-sectional view of the structure of the rotating disk of the present invention;

[0017] Fig. 9 It is a schematic cross-sectional view of the structure of the sliding contact ring of the present invention.

[0018] In the figure: 1- shunt pipe, 2- connecting pipe, 3- feeding pipe, 4- variable resistance mechanism, 401- resistance rod, 402- conductive slider, 403- elastic member No. 1, 5- sliding mechanism, 501- sliding block, 502- sliding ring, 6- connecting plate, 7- supporting plate, 8- sliding rod, 9- permanent magnet, 10- electromagnet, 11- elastic member No. 2, 12- adjusting plate, 13- guide groove, 14- moving plate, 15- limiting rod, 16- closing plate, 17- grinding table, 18- grinding roller, 19- shell, 20- material hopper, 21- reduction box, 22- motor, 23- fixing ring, 24- wiping plate, 25- guide rod, 26- guide block, 27- rotating disk. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1, as Figure 1-Figure 3A grinding device for lithium carbonate production comprises a shell 19, a distribution hopper 20 is arranged on the top of the inner side of the shell 19, a convex block for supporting the distribution hopper 20 is fixedly arranged on the edge of the distribution hopper 20, and the convex block is fixedly connected to the shell 19. While supporting the distribution hopper 20, the convex block leaves a space for airflow to pass between the distribution hopper 20 and the shell 19, a reduction box 21 is fixedly arranged on the bottom of the shell 19, and a grinding table 17 is rotatably connected to the top of the reduction box 21, a motor 22 is fixedly arranged on one side of the bottom of the shell 19, the motor 22 is transmission-connected to the input end of the reduction box 21, and the output end of the reduction box 21 is transmission-connected to the grinding table 17, a plurality of grinding rollers 18 are arranged on the inner side of the shell 19, and the grinding rollers 18 are arranged on the top of the grinding table 17, and a driving mechanism corresponding to the number of grinding rollers 18 is arranged in the shell 19, and the driving mechanism is used to support and drive the grinding rollers 18 to rotate around their respective axes, and the lithium carbonate raw material is fed into the distribution hopper 20 through the feeding mechanism of the grinding device.

[0021] The material distribution hopper 20 arranges the material on the top surface of the grinding table 17, and the motor 22 cooperates with the reduction box 21 to drive the grinding table 17 to rotate, and the grinding table 17 drives the material to rotate. While rotating, the material moves toward the edge of the grinding table 17 under the action of centrifugal force, and the material moves to the grinding roller 18 and is crushed and ground by the grinding roller 18. After being ground by multiple grinding rollers 18, the material leaves the edge of the grinding table 17, and a space for airflow is left between the edge of the grinding table 17 and the shell 19. The air supply mechanism of the equipment blows out airflow to form an air ring on the outside of the grinding table 17. The ground material is driven by the air ring to rise to the powder selection mechanism for separation, and the separated unqualified material falls back into the distribution hopper 20, or the ground material is collected from the bottom outside the edge of the grinding table 17 through external circulation. The collected material is separated by another separation device and the unqualified material is put back into the distribution hopper 20.

[0022] The bottom of the material distribution hopper 20 is fixedly connected with a shunt pipe 1. The number of shunt pipes 1 is set to be several and the number is adapted to the number of grinding rollers 18. The shunt pipe 1 is used to guide the material in the material distribution hopper 20 to the rated position. Figure 2 The rotation direction of the grinding table 17 relative to the shunt pipe 1 is the direction indicated by the arrow. The rotation direction of the grinding table 17 is the forward direction of the material. The shunt pipe 1 includes an inclined guide portion and a vertically arranged cloth portion. The cloth portion and the guide portion are made in one piece. The cloth portion of the shunt pipe 1 is offset from the center of the grinding table 17. The diameter and position of the cloth portion are adapted to the moving distance in the radial direction of the correspondingly arranged material when it rotates and centrifugally moves to contact the adjacent grinding roller 18 in the forward direction.

[0023] That is, the lithium carbonate raw material passes through the distribution hopper 20 and the shunt pipe 1 and then falls onto the top surface of the grinding table 17. The grinding table 17 drives the material to rotate, and the material moves toward the edge of the grinding table 17 during the rotation. When the material contacts the grinding roller 18 between the corresponding two adjacent shunt pipes 1, the position of the material is always the small diameter end of the grinding roller 18, that is, the inner side close to the center of the grinding table 17. Compared with the material ring formed by the traditional material arrangement, the centrifugal movement distance of the material at different positions on the ring is different from the contact part of the grinding roller 18. The position of the distribution part ensures that the material can contact the grinding roller 18, thereby ensuring the number of subsequent contacts between this part of the material and the grinding roller 18, and improving the uniformity of the grinding degree of the lithium carbonate raw material. The diameter of the distribution part is not greater than the moving distance of the material in the radial direction of the grinding table 17 during the rotation of the two adjacent grinding rollers 18, thereby avoiding the stacking of materials. At the same time, the diameter of the distribution part ensures the width of the contact between the distribution part and the grinding roller 18, further limiting the number of contacts between the material and the grinding roller 18, thereby ensuring the grinding efficiency and quality of the lithium carbonate raw material ground by the equipment.

[0024] Embodiment 2, as Figure 1-Figure 9 One end of the shunt tube 1 is fixedly sleeved with a fixing ring 23, one side of the fixing ring 23 is fixedly connected to a connecting plate 6, one side of the bottom of the connecting plate 6 is fixedly connected to a supporting plate 7, the top of the supporting plate 7 is slidably connected to two sliding rods 8, the two sliding rods 8 are symmetrically arranged about the center plane of the supporting plate 7, a permanent magnet 9 is fixedly connected between the two sliding rods 8, one end of the sliding rod 8 is T-shaped, the sliding rod 8 can slide relative to the supporting plate 7 without separating from the supporting plate 7, one side of the top of the supporting plate 7 is fixedly connected to an electromagnet 10, there is an attraction between the electromagnet 10 and the permanent magnet 9 and the positions correspond, one side of the permanent magnet 9 is fixedly connected to a No. 2 elastic member 11, the No. 2 elastic member 11 is set as an adjusting spring, and one end of the No. 2 elastic member 11 is fixedly connected to the supporting plate 7.

[0025] The bottom of the support plate 7 is slidably sleeved with an adjustment plate 12, the permanent magnet 9 is used to drive the adjustment plate 12 to move, the sliding rod 8 provides a guide for the movement of the permanent magnet 9, one side of the adjustment plate 12 is fixedly connected with a closing plate 16, the closing plate 16 is used to adjust the opening of the shunt pipe 1, the outer side of the output shaft of the motor 22 is fixedly sleeved with a rotating disk 27, and one side of the rotating disk 27 is fixedly provided with a variable resistance mechanism 4, see Figure 8The variable resistance mechanism 4 includes two resistance rods 401, which are fixedly arranged in the rotating disk 27. A conductive slider 402 is slidably sleeved between the two resistance rods 401. The sliding direction of the conductive slider 402 is consistent with the radial direction of the rotating disk 27, that is, the centrifugal force received by the conductive slider 402 when rotating around the axis of the rotating disk 27 is consistent with the axial direction of the rod body of the resistance rod 401. One side of the conductive slider 402 is fixedly connected to a first elastic member 403, and the first elastic member 403 is preferably an insulating spring. The side of the resistance rod 401 close to the edge of the rotating disk 27 is a wiring terminal. When the conductive slider 402 slides relative to the resistance rod 401, the resistance of the resistance rod 401 connected to the circuit changes.

[0026] See also Fig. 9 A sliding contact mechanism 5 is provided on one side of the rotating disk 27. The sliding contact mechanism 5 includes two sliding contact rings 502 and a sliding contact block 501. The sliding contact block 501 fits with the corresponding sliding contact ring 502. The sliding contact ring 502 is fixedly connected to the outer wall of the reduction box 21. The sliding contact block 501 is fixedly connected to a plane on one side of the rotating disk 27. The sliding contact block 501 is electrically connected to the wiring terminals of the two resistance rods 401 respectively. The two sliding contact rings 502 and the electromagnet 10 are connected to the circuit in series.

[0027] When the motor 22 adjusts the speed of the grinding table 17 as needed, the speed of the output shaft of the motor 22 changes, and the output shaft of the motor 22 drives the rotating disk 27 to rotate, and the rotating disk 27 drives the conductive slider 402 to rotate, so that the No. 1 elastic member 403 is compressed, and the No. 1 elastic member 403 provides the centripetal force required for the rotation of the conductive slider 402. The speed of the motor 22 changes, the rotating disk 27 drives the speed of the conductive slider 402 to change, and the centripetal force required for the conductive slider 402 changes, so that the equilibrium position of the conductive slider 402 changes, and then slides relative to the resistance rod 401, so that the resistance value of the variable resistance mechanism 4 connected to the circuit changes, when the speed of the motor 22 increases, the rod length of the resistance rod 401 connected to the circuit decreases, and the resistance value decreases, thereby increasing the current flowing through the electromagnet 10, and the electromagnet 10 attracts the permanent magnet 9 to overcome the elastic force of the No. 2 elastic member 11 to move, and the permanent magnet 9 drives the adjustment plate 12 to move, and the adjustment plate 12 drives the closing plate 16 to move, so that the opening area of ​​the shunt pipe 1 blocked by the closing plate 16 increases.

[0028] The moving direction of the closing plate 16 is consistent with the radial direction of the grinding table 17. On the one hand, when the rotation speed of the grinding table 17 increases, the outer edge of the material's feeding position is relatively moved toward the inner side of the grinding table 17 to adapt to the increased centrifugal force, so that the material after the edge position changes can still contact the inner side of the grinding roller 18, ensuring the consistency of the contact position. When the inner side of the grinding roller 18 is coarse grinding and the outer side is fine grinding, it is further ensured that the material can contact the coarse grinding part and the fine grinding part. At the same time, the material is kept as close to the inner side of the grinding table 17 as possible to ensure that it can subsequently contact the grinding roller 18 for a rated number of times, thereby improving the applicability of the grinding equipment. On the other hand, the width of the material is reduced so that the width of the material in the radial direction can adapt to the increased centrifugal force, ensuring that the material after the cloth width is reduced can still contact the grinding roller 18 for a rated number of times, thereby further improving the reliability of the grinding device.

[0029] Embodiment three, as Figure 1-Figure 7 One end of the shunt pipe 1 is fixedly connected to a connecting pipe 2, which can be extended and retracted relative to the shunt pipe 1, and the connecting pipe 2 is set as a hose. One end of the connecting pipe 2 is fixedly connected to a feeding pipe 3, and one end of the feeding pipe 3 is fixedly connected to a smear plate 24. The smear plate 24 is slidably sleeved with the closing plate 16, and the bottom surface of the closing plate 16 is flush with the bottom surface of the closing plate 16. When the grinding table 17 rotates relative to the smear plate 24, the smear plate 24 cooperates with the closing plate 16 to smooth the top surface of the material, thereby ensuring the arrangement height of the material, thereby ensuring the rated amount of material arrangement. The front and rear ends of one side of the closing plate 16 are provided with convex strips, and the convex strips are used to enable the closing plate 16 to drive the smear plate 24 to rise and fall without affecting the sliding of the closing plate 16 relative to the smear plate 24. A through groove for material to pass through is opened in the center of the smear plate 24.

[0030] When the closing plate 16 slides relative to the smear plate 24, the size of the through groove is changed, thereby adjusting the opening of the through groove, so that the width of the material passing through the shunt pipe 1, the connecting pipe 2 and the discharge pipe 3 is reduced, thereby indirectly adjusting the opening size of the shunt pipe 1, completing the adjustment of the position and width of the material arrangement. Two limit rods 15 are fixedly connected to the bottom of the permanent magnet 9, and a movable plate 14 is fixedly connected to one side of the adjustment plate 12. The limit rod 15 is slidably connected to the movable plate 14. When the permanent magnet 9 drives the adjustment plate 12 to move horizontally, the adjustment plate 12 can be raised and lowered relative to the permanent magnet 9. A guide groove 13 is provided on the plate body of the adjustment plate 12, and a guide block 26 is fixedly connected to the bottom of the support plate 7. The guide block 26 is embedded in the guide groove 13, and the guide groove 13 is inclined.

[0031] When the electromagnet 10 attracts the permanent magnet 9 to approach, the limit rod 15 drives the moving plate 14 to move, and the moving plate 14 drives the adjusting plate 12 to move. The guide block 26 presses against the side wall of the guide groove 13 to push the adjusting plate 12 up, and the adjusting plate 12 drives the closing plate 16 to move, so that the closing plate 16 reduces the opening size of the discharge pipe 3 while driving the smear plate 24 to rise. The guide rod 25 is slidably connected with the fixed ring 23. The number of guide rods 25 is set to be several and is arranged in a ring-shaped symmetrical manner about the center of the fixed ring 23. The guide rod 25 guides the lifting and lowering movement of the smear plate 24. The smear plate 24 rises, and the distance between the smear plate 24 and the grinding table 17 increases, thereby increasing the material distribution height. When the rotation speed of the grinding table 17 increases, the material width is reduced while the material layout height is increased, thereby ensuring the stability of the material layout quantity, and further improving the efficiency of the equipment in grinding lithium carbonate raw materials.

[0032] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grinding device for lithium carbonate production, comprising a housing (19), a plurality of grinding rollers (18) being arranged inside the housing (19), and a grinding table (17) being arranged at the bottom of the housing (19), characterized in that: A material distribution hopper (20) is arranged at the top of the inner side of the shell (19), and a diverter pipe (1) is fixedly connected to the bottom of the material distribution hopper (20). The number of the diverter pipes (1) is set to be several and the number is matched with the number of grinding rollers (18). The diverter pipe (1) is used to divert and guide the material in the material distribution hopper (20), and the diverter pipe (1) includes an inclined guide portion and a vertically arranged material distribution portion; The position of the material distribution portion of the shunt pipe (1) is offset from the center of the grinding table (17), and the diameter and position of the material distribution portion are adapted to the radial movement distance of the discharged material when the discharged material is rotated and centrifugally moved to contact the adjacent grinding roller (18), so that the position where the arranged material contacts the grinding roller (18) is on the side of the grinding roller (18) close to the center of the grinding table (17), and the arranged material and the material retained between two adjacent grinding rollers (18) are staggered in the circumferential direction of the grinding table (17).

2. A grinding device for lithium carbonate production according to claim 1, characterized in that, The diameter of the material distribution portion is not greater than the distance that the material moves in the radial direction of the grinding table (17) during the rotation of two adjacent grinding rollers (18).

3. A grinding device for lithium carbonate production according to claim 1, characterized in that, One end of the shunt pipe (1) is fixedly sleeved with a fixing ring (23), one side of the fixing ring (23) is fixedly connected to a connecting plate (6), one side of the bottom of the connecting plate (6) is fixedly connected to a supporting plate (7), the top of the supporting plate (7) is slidably connected to two sliding rods (8), a permanent magnet (9) is fixedly connected between the two sliding rods (8), one side of the supporting plate (7) is fixedly connected to an electromagnet (10), and there is an attractive force between the electromagnet (10) and the permanent magnet (9); A second elastic member (11) is fixedly connected to one side of the permanent magnet (9); an adjusting plate (12) is slidably sleeved on the bottom of the support plate (7); the permanent magnet (9) is used to drive the adjusting plate (12) to move; a closing plate (16) is fixedly connected to one side of the adjusting plate (12); the closing plate (16) is used to adjust the width and position of the material of the shunt pipe (1); an adjusting mechanism is arranged on the inner side of the shell (19); the adjusting mechanism can adjust the current passing through the electromagnet (10) according to the rotation speed of the grinding table (17).

4. A grinding device for lithium carbonate production according to claim 3, characterized in that, The moving direction of the closing plate (16) is consistent with the radial direction of the grinding table (17).

5. A grinding device for lithium carbonate production according to claim 3, characterized in that: A motor (22) is fixedly arranged on one side of the bottom of the housing (19); the adjustment mechanism comprises a rotating disk (27); the rotating disk (27) is fixedly sleeved with an output shaft of the motor (22); a variable resistance mechanism (4) is fixedly arranged on one side of the rotating disk (27); a sliding contact mechanism (5) is arranged on one side of the rotating disk (27); the variable resistance mechanism (4) is connected to the circuit in series with the electromagnet (10) through the sliding contact mechanism (5); and the variable resistance mechanism (4) adjusts the value of the resistance value of the connected circuit according to the rotation speed of the rotating disk (27).

6. A grinding device for lithium carbonate production according to claim 5, characterized in that: The variable resistance mechanism (4) comprises two resistance rods (401), the resistance rods (401) are fixedly arranged in the rotating disk (27), a conductive slider (402) is slidably sleeved between the two resistance rods (401), the sliding direction of the conductive slider (402) is consistent with the radial direction of the rotating disk (27), one side of the conductive slider (402) is fixedly connected to a first elastic member (403), and the side of the resistance rod (401) close to the edge of the rotating disk (27) is a wiring terminal.

7. A grinding device for lithium carbonate production according to claim 5, characterized in that: The sliding contact mechanism (5) comprises two sliding contact rings (502) and a sliding contact block (501); the sliding contact block (501) is fitted with the corresponding sliding contact ring (502); the sliding contact ring (502) is fixed relative to the housing (19); the sliding contact block (501) is fixedly connected to the rotating disk (27); and the two sliding contact rings (502) and the electromagnet (10) are connected to the circuit in series.

8. A grinding device for lithium carbonate production according to claim 3, characterized in that: One end of the diversion pipe (1) is fixedly connected to a connecting pipe (2), one end of the connecting pipe (2) is fixedly connected to a feeding pipe (3), one end of the feeding pipe (3) is fixedly connected to a smear plate (24), the smear plate (24) is slidably sleeved with a closing plate (16), the bottom surface of the closing plate (16) is flush with the bottom surface of the closing plate (16), a convex strip is provided on one side of the closing plate (16), and a through groove for material to pass through is provided in the center of the smear plate (24).

9. A grinding device for lithium carbonate production according to claim 8, characterized in that: The bottom of the permanent magnet (9) is fixedly connected to two limit rods (15), one side of the adjustment plate (12) is fixedly connected to a movable plate (14), the plate body of the adjustment plate (12) is provided with a guide groove (13), the bottom of the support plate (7) is fixedly connected to a guide block (26), the guide block (26) is embedded in the guide groove (13), the guide groove (13) is inclined, and the top of the smear plate (24) is provided with a guide rod (25), and the guide rod (25) is slidably sleeved with the fixed ring (23).

10. A grinding device for lithium carbonate production according to claim 1, characterized in that: A protrusion for supporting the material distribution hopper (20) is fixedly arranged on the edge of the material distribution hopper (20), and the protrusion is fixedly connected to the shell (19). A reduction box (21) is fixedly arranged on the bottom of the shell (19), and the output end of the reduction box (21) is drivingly connected to the grinding table (17).

Images