A lithium carbonate raw material dehydration feeding device

Abstract

This invention relates to the field of dehydration equipment technology, specifically a lithium carbonate raw material dehydration and feeding device, including a grinding cylinder and a grinding mechanism. The invention uses an external motor to drive a fixed rod and a drive unit, which in turn drive a first grinding unit to operate synchronously. The first grinding unit initially grinds the lithium carbonate raw material and then places it onto the upper surface of a fixed platform for fine grinding. During this process, a water outlet unit simultaneously washes and removes impurities from the lithium carbonate raw material and guides its feeding. After the initially ground lithium carbonate raw material is processed by the operating second grinding unit, standard-compliant raw material is discharged, and some larger particles are drawn to the upper end of the first grinding unit for secondary processing and grinding. This achieves graded and sorted processing of the lithium carbonate raw material, which helps simplify the production process of grinding and screening lithium carbonate raw materials, improves production efficiency, and helps ensure consistent particle size of the lithium carbonate raw material, thus improving product quality.

Description

Technical Field

[0001] This invention relates to the field of dehydration equipment technology, specifically to a lithium carbonate raw material dehydration feeding device. Background Technology

[0002] Lithium carbonate is one of the main raw materials for the preparation of inorganic lithium salts. It usually exists in the form of solid powder, and the particle size of the powder can vary depending on the production requirements and uses. As an important chemical raw material, lithium carbonate has a wide range of applications and is of great significance. In some fields such as battery manufacturing, finer lithium carbonate powder is usually required to improve its reactivity and battery performance.

[0003] To produce finer lithium carbonate powder from existing lithium carbonate raw materials, processes such as grading, grinding, sieving, and dehydration are required. First, the raw material needs to be fed into grinding equipment (such as ball mills, vibratory mills, etc.) for grinding. Then, the raw material of different particle sizes is sieved. Subsequently, the workers feed the pre-ground lithium carbonate raw material back into the grinding equipment, and the raw material after the second grinding is sieved. Then, the lithium carbonate raw material is washed to remove impurities and deposits attached to the surface. Finally, the washed lithium carbonate raw material is dehydrated and dried to obtain finer lithium carbonate powder.

[0004] The existing lithium carbonate raw material powder preparation methods have the following problems and defects: 1. During the grinding and processing of lithium carbonate raw materials, the initially ground lithium carbonate raw materials need to be removed from the grinding equipment and sieved, and then fed back into the grinding equipment for secondary grinding. This not only prolongs the production steps and cycle, but also reduces the overall production efficiency. Moreover, the particle size of the raw materials may vary between different batches or different time periods within the same batch during grinding and sieving, affecting the stability and consistency of the products and reducing the overall quality of the products. 2. During the grinding and processing of existing lithium carbonate raw materials, some raw materials are not ground thoroughly due to excessively fast falling rates or insufficient contact with the grinding equipment. This results in lithium carbonate raw materials with larger particle sizes, which need to be sieved by workers. This not only increases the labor intensity and production costs of workers, but also makes the distribution of lithium carbonate raw material powder uneven, with differences between large and small particles, reducing product quality. Summary of the Invention

[0005] Therefore, it is necessary to provide a lithium carbonate raw material dehydration feeding device to solve the problems of multiple grinding and sieving processes required in the existing lithium carbonate raw material grinding and processing, which result in long production cycles and low efficiency. Furthermore, some lithium carbonate raw materials are not fully ground and need to be sieved to avoid the problem of reduced product quality due to large differences in the particle size of lithium carbonate raw material powder.

[0006] This application provides a lithium carbonate raw material dehydration feeding device, including a grinding cylinder. The grinding cylinder, which is hollow inside, is divided into a cylindrical section and an inverted frustum section from top to bottom. A main feed port is opened on the upper end face of the cylindrical section of the grinding cylinder. A feeding assembly is provided at the top of the inner cavity of the grinding cylinder. A main discharge port is opened on the lower end face of the frustum section of the grinding cylinder. A fixing ring is fixedly provided on the lower end face of the outer circumference of the cylindrical section of the grinding cylinder. Three support legs are fixedly fixedly arranged circumferentially at equal intervals on the lower end face of the fixing ring. A grinding mechanism for grinding lithium carbonate raw material is provided in the inner cavity of the grinding cylinder.

[0007] The grinding mechanism includes a fixed rod with an internal cavity. The upper end face of the grinding cylinder is rotatably connected to the fixed rod, which extends from top to bottom. A first grinding unit is provided on the fixed rod. The first grinding unit includes a first grinding table for coarse grinding of lithium carbonate raw materials. A grinding plate is rotatably provided in the middle of the inner cavity of the grinding cylinder. A driving unit for driving the grinding plate to rotate is provided on the upper end face of the grinding plate. A water outlet unit for rinsing the lithium carbonate raw materials is provided in the inner cavity of the grinding cylinder.

[0008] The lower end face of the grinding plate is provided with a second grinding unit. The second grinding unit includes a cylindrical fixed platform. The fixed platform, which is hollow inside, is divided into a grinding area, a feeding area and a suction area in a counterclockwise direction. A grinding component is provided on the fixed platform in the grinding area. The grinding component includes a second grinding platform for fine grinding of lithium carbonate raw materials. A feeding component is provided on the fixed platform in the feeding area. A suction component is also provided on the fixed platform for suctioning lithium carbonate raw materials for secondary grinding, and the suction component is located on the suction area.

[0009] According to an advantageous embodiment, a first grinding table is fixedly disposed on the lower end face of the fixing rod. The first grinding table consists of two frustums. The upper frustum of the first grinding table is smaller at the top and larger at the bottom, and the lower frustum is larger at the bottom and smaller at the top. A plurality of protrusions are fixedly disposed at equal intervals on the circumferential outer wall of the lower frustum of the first grinding table. The grinding plate is a hollow cylinder. The inner circumferential wall of the grinding plate is in contact with and parallel to the inclined surface of the outer circumferential wall of the lower frustum of the first grinding table.

[0010] According to an advantageous embodiment, the drive unit includes a drive gear, the drive gear is fixedly sleeved on the fixed rod, a gear ring is rotatably arranged on the inner wall of the grinding cylinder, a top plate is fixedly arranged in the middle of the inner cavity of the grinding cylinder, three circumferentially evenly distributed driven gears are rotatably arranged at equal intervals on the lower end face of the top plate, and the three driven gears are all located between the drive gear and the gear ring, a plurality of swing rods are fixedly arranged at equal intervals on the outer circumference of the fixed rod, each swing rod is L-shaped and a linkage gear is fixedly sleeved on the vertical section of the swing rod, and a moving ring that meshes with the linkage gear is fixedly arranged on the inner circumference of the grinding plate.

[0011] According to an advantageous embodiment, the water outlet unit includes a fixed ring with an internal cavity, a temporary storage cylinder with an internal cavity is fixedly disposed inside the grinding cylinder, a fixed ring fixed to the gear ring is rotatably disposed on the lower end face of the temporary storage cylinder, a water storage cylinder with an internal cavity is fixedly disposed on the circumferential outer wall of the cylindrical section of the grinding cylinder, the water storage cylinder is connected to the inner cavity of the temporary storage cylinder, the temporary storage cylinder is connected to the inner cavity of the fixed ring, and a plurality of circumferentially evenly arranged L-shaped drain pipes are equidistantly disposed on the lower end face of the gear ring, the horizontal section of the drain pipes slopes downward from left to right, and the drain pipes are connected to the inner cavity of the fixed ring.

[0012] According to an advantageous embodiment, the feeding assembly includes a placement plate, the placement plate is fixedly disposed on the top of the inner cavity of the grinding cylinder, the placement plate has an inverted frustum-shaped sliding groove, a plurality of primary feeding ports are equidistantly disposed on the upper circumferential outer wall of the connection between the fixing rod and the placement plate, and a plurality of primary discharging ports are equidistantly disposed on the upper circumferential outer wall of the connection between the fixing rod and the first grinding table.

[0013] According to an advantageous embodiment, the upper end face of the inner wall of the fixed platform is conical, the grinding assembly includes a connecting rod with its axis extending from top to bottom, the lower end face of the first grinding platform is fixedly provided with the connecting rod, the lower part of the circumferential outer wall of the connecting rod is fixedly sleeved with a fan-shaped second grinding platform, the lower end face of the second grinding platform is in contact with and parallel to the inclined surface of the upper end face of the inner wall of the fixed platform, the upper part of the circumferential outer wall of the connecting rod is fixedly sleeved with a receiving plate, and a guide plate in the shape of a right trapezoid is provided between the receiving plate and the second grinding platform.

[0014] According to an advantageous embodiment, the feeding assembly includes a feeding port, the upper end face of the inner wall of the fixed table is provided with the feeding port, a filter frame corresponding to the position of the feeding port is slidably arranged in the inner cavity of the fixed table, a filter screen is fixedly arranged on the filter frame, a plurality of protrusions are fixedly arranged circumferentially at equal intervals on the lower end face of the second grinding table, a plurality of pressure blocks corresponding to the protrusions are fixedly arranged circumferentially at equal intervals on the upper end face of the filter frame, and two vibration springs are provided between the lower end face of the filter frame and the inner cavity of the fixed table.

[0015] According to an advantageous embodiment, a cylindrical gathering plate is fixedly disposed on the circumferential inner wall of the fixed platform. The gathering plate is fan-shaped and its circumferential inner wall is in contact with and parallel to the inclined surface of the guide plate. A suction cylinder is fixedly disposed inside the cavity of the grinding cylinder. A spiral rod fixed to the lower end face of the front driven gear is rotatably disposed through the suction cylinder. Multiple intermediate feed ports are equidistantly opened on the circumferential outer wall of the lower part of the suction cylinder, and an intermediate discharge port is opened on the circumferential outer wall of the upper part of the suction cylinder.

[0016] In summary, the present invention has at least one of the following beneficial effects: First, the operation of the external motor drives the fixed rod to run, and the fixed rod drives the drive unit and the first grinding unit to rotate synchronously, so that the lithium carbonate raw material is initially ground and falls onto the upper surface of the fixed platform. At the same time, the water outlet unit can wash and remove impurities from the lithium carbonate raw material. After the lithium carbonate raw material is processed by the rotating second grinding unit, some of the raw material that meets the requirements is discharged from the feeding area, and some raw material with larger particle size is sucked by the suction component to the upper end of the first grinding unit for secondary processing and grinding. This realizes the grading and sorting of lithium carbonate raw material, which helps to simplify the production process of grinding and screening lithium carbonate raw material, improve production efficiency, and secondly, helps to ensure that the lithium carbonate raw material has a consistent particle size, thus improving product quality.

[0017] Second, the external motor drives the fixed rod to rotate, causing the lithium carbonate raw material placed on the chute to enter the inner cavity of the fixed rod evenly from the primary feed port as the fixed rod rotates. Subsequently, the lithium carbonate raw material in the inner cavity of the fixed rod is evenly discharged from multiple primary discharge ports, avoiding problems such as insufficient grinding and local accumulation caused by excessive feeding. In addition, the first grinding table and grinding plate are driven to rotate at different speeds to perform differential grinding on the lithium carbonate raw material, ensuring that the raw material is subjected to uniform force during the initial grinding process, which helps to obtain more uniform lithium carbonate raw material and avoids local over- or under-grinding.

[0018] Third, the external motor drives the gear ring to rotate inside the grinding cylinder. The gear ring drives the fixed ring and multiple drain pipes to rotate synchronously, so that the horizontal section of the rotating drain pipe continuously washes the lithium carbonate raw material being ground between the first grinding table and the grinding plate. This washing process removes some impurities and deposits attached to the lithium carbonate raw material, which helps to improve product quality. Secondly, the water flow removes impurities and deposits, preventing them from re-attaching to the grinding tools and raw materials and reducing grinding efficiency. Moreover, the water flow can also guide the lithium carbonate raw material to be fed out, preventing blockages during grinding.

[0019] Fourth, the pre-ground lithium carbonate raw material falls onto the working area on the upper surface of the fixed platform through the receiving plate and guide plate. After being finely ground by the grinding components in the grinding zone, the lithium carbonate raw material with smaller particle size is discharged from the discharge port of the feeding zone, completing the graded grinding of the lithium carbonate raw material. This avoids the raw material being processed and ground multiple times, which would reduce production efficiency and product quality. In addition, the suction components in the suction zone can suck the incompletely ground lithium carbonate raw material to the upper end of the first grinding unit for secondary grinding processing, ensuring that the particle size of the lithium carbonate raw material discharged from the total discharge port meets the product requirements. This helps to reduce the particle size difference of the lithium carbonate raw material and ensure the consistency and stability of the product. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown.

[0022] Figure 2 A cross-sectional schematic diagram of a grinding cylinder structure provided according to an embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the drive unit and feeding assembly provided according to an embodiment of the present invention is shown.

[0024] Figure 4 A schematic diagram of the structure of a first grinding unit provided according to an embodiment of the present invention is shown.

[0025] Figure 5 The present invention provides an embodiment of the invention. Figure 4 Enlarged schematic diagram of the structure at point A in the diagram.

[0026] Figure 6 A schematic diagram of the structure of the second grinding unit provided according to an embodiment of the present invention is shown.

[0027] Figure 7 A schematic diagram of the suction assembly and grinding assembly provided according to an embodiment of the present invention is shown.

[0028] Figure 8 A schematic diagram of the structure of the fixed platform provided according to an embodiment of the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 1. Grinding cylinder; 2. Main feed inlet; 3. Main discharge outlet; 4. Fixing ring; 5. Support leg; 6. Grinding mechanism; 61. Fixing rod; 62. First grinding unit; 621. First grinding table; 6210. Protrusion 1; 622. Grinding plate; 623. Feeding assembly; 6231. Placement plate; 6232. Slide groove; 6233. Primary feed inlet; 6234. Primary discharge outlet; 63. Drive unit; 631. Drive gear; 632. Gear ring; 633. Driven gear; 634. Swing rod; 635. Linkage gear; 636. Moving ring; 637. Top plate; 64. Water outlet unit; 641. Fixing ring; 642. Temporary storage 643. Water storage cylinder; 644. Drain pipe; 65. Second grinding unit; 650. Second grinding table; 651. Grinding assembly; 6510. Protrusion II; 6511. Connecting rod; 6512. Receiving plate; 6513. Guide plate; 652. Feeding assembly; 6521. Feeding port; 6522. Filter frame; 6523. Pressing block; 6524. Vibration spring; 653. Suction assembly; 6531. Gathering plate; 6532. Suction cylinder; 6533. Spiral rod; 6534. Intermediate feed port; 6535. Intermediate discharge port; 66. Fixed table; 661. Grinding area; 662. Feeding area; 663. Suction area. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figure 1 and Figure 2 As shown, a lithium carbonate raw material dehydration feeding device includes a grinding cylinder 1. The grinding cylinder 1, which is hollow inside, is divided into a cylindrical section and an inverted frustum section from top to bottom. A main feed inlet 2 is opened on the upper end face of the cylindrical section of the grinding cylinder 1. A feeding assembly 623 is provided at the top of the inner cavity of the grinding cylinder 1. A main discharge outlet 3 is opened on the lower end face of the frustum section of the grinding cylinder 1. A fixing ring 4 is fixedly provided on the lower end face of the outer circumference of the cylindrical section of the grinding cylinder 1. Three support legs 5 are fixedly fixed at equal intervals around the lower end face of the fixing ring 4. A grinding mechanism 6 for grinding lithium carbonate raw material is provided in the inner cavity of the grinding cylinder 1.

[0033] like Figure 2 , Figure 3 and Figure 4As shown, the grinding mechanism 6 includes a fixed rod 61 with an internal cavity. The upper end face of the grinding cylinder 1 is rotatably provided with the fixed rod 61 extending from top to bottom. The fixed rod 61 is connected to an external motor (not shown in the figure). A first grinding unit 62 is provided on the fixed rod 61. The first grinding unit 62 includes a first grinding table 621 for coarse grinding of lithium carbonate raw materials. A grinding plate 622 is rotatably provided in the middle of the inner cavity of the grinding cylinder 1. A driving unit 63 for driving the grinding plate 622 to rotate is provided on the upper end face of the grinding plate 622. A water outlet unit 64 for rinsing the lithium carbonate raw materials is provided in the inner cavity of the grinding cylinder 1.

[0034] like Figure 2 , Figure 6 and Figure 8 As shown, a second grinding unit 65 is provided on the lower end face of the grinding plate 622. The second grinding unit 65 includes a cylindrical fixed platform 66. The fixed platform 66, which is hollow inside, is divided into a grinding area 661, a feeding area 662, and a suction area 663 in a counterclockwise direction. A grinding component 651 is provided on the fixed platform 66 in the grinding area 661. The grinding component 651 includes a second grinding platform 650 for fine grinding of lithium carbonate raw materials. A feeding component 652 is provided on the fixed platform 66 in the feeding area 662. A suction component 653 for suctioning lithium carbonate raw materials for secondary grinding is also provided on the fixed platform 66, and the suction component 653 is located on the suction area 663.

[0035] During operation, the worker places lithium carbonate raw material into the grinding cylinder 1 through the main feed inlet 2. An external motor is activated, driving the fixing rod 61 to rotate. The fixing rod 61 then drives the drive unit 63 to rotate. The lithium carbonate raw material to be ground is then evenly distributed onto the upper part of the grinding table through the fixing rod 61 and the feeding assembly 623, preventing the lithium carbonate raw material from accumulating on the upper part of the first grinding table 621 and reducing grinding efficiency. The drive unit 63 drives the first grinding table 621 and the grinding plate 622 to rotate at a differential speed, ensuring that the lithium carbonate raw material is uniformly and initially ground. The water inlet unit is driven by the drive unit 63 to continuously rinse the grinding lithium carbonate. The lithium raw material is guided to feed, and the lithium carbonate raw material that has been initially ground falls into the working area on the fixed table 66. The grinding component 651 in the grinding area 661 works with the fixed table 66 to perform fine grinding, so that the lithium carbonate raw material that meets the requirements is guided by the water flow and discharged from the discharge port 6521 in the feeding area 662, and finally discharged from the main discharge port 3 and collected by the staff. The lithium carbonate raw material that is not ground sufficiently is sucked back to the upper end of the first grinding table 621 by the suction component 653 in the suction area 663 for secondary grinding, ensuring that the discharged lithium carbonate raw material meets the requirements and ensuring product quality.

[0036] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a first grinding table 621 is fixedly installed on the lower end face of the fixed rod 61. The first grinding table 621 consists of two frustums. The upper frustum of the first grinding table 621 is smaller at the top and larger at the bottom, while the lower frustum is larger at the top and smaller at the bottom. Multiple protrusions 6210 are fixedly installed at equal intervals on the circumferential outer wall of the lower frustum of the first grinding table 621. The grinding plate 622 is a hollow cylinder. The inner circumferential wall of the grinding plate 622 is in contact with and parallel to the inclined surface of the outer circumferential wall of the lower frustum of the first grinding table 621.

[0037] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the drive unit 63 includes a drive gear 631, which is fixedly sleeved on the fixed rod 61. A gear ring 632 is rotatably arranged on the inner wall of the grinding cylinder 1. A top plate 637 is fixedly arranged in the middle of the inner cavity of the grinding cylinder 1. Three circumferentially evenly distributed driven gears 633 are rotatably arranged at equal intervals on the lower end face of the top plate 637, and the three driven gears 633 are all located between the drive gear 631 and the gear ring 632. Multiple swing rods 634 are fixedly arranged at equal intervals on the outer circumference of the fixed rod 61. Each swing rod 634 is L-shaped, and a linkage gear 635 is fixedly sleeved on the vertical section of the swing rod 634. A moving ring 636 that meshes with the linkage gear 635 is fixedly arranged on the inner circumference of the grinding plate 622.

[0038] During operation, the external motor drives the fixed rod 61 to rotate, which in turn drives the drive gear 631 to rotate synchronously. The drive gear 631 drives multiple driven gears 633 to rotate, which in turn drives the gear ring 632 to rotate on the inner wall of the grinding cylinder 1. The fixed rod 61 drives multiple swing rods 634 to rotate, so that each swing rod 634 drives the linkage gear 635 to rotate. The linkage gear 635 drives the moving ring 636 to rotate, which in turn drives the grinding plate 622 to rotate synchronously. The fixed rod 61 also drives the first grinding table 621 at the bottom and multiple protrusions 6210 to rotate synchronously, causing the grinding plate 622 and the first grinding table 621 to rotate at a different speed. This differential grinding of the lithium carbonate raw material between the grinding plate 622 and the first grinding table 621 ensures that the raw material is subjected to a uniform force during the initial grinding process, which helps to obtain a more uniform lithium carbonate raw material and avoids local over- or under-grinding. Subsequently, the lithium carbonate raw material after initial grinding falls from the bottom of the first grinding table 621 to the working area on the fixed table 66 for fine grinding.

[0039] like Figure 2 , Figure 3 and Figure 4As shown, the feeding assembly 623 includes a placement plate 6231. The placement plate 6231 is fixedly installed on the top of the inner cavity of the grinding cylinder 1. The placement plate 6231 has an inverted frustum-shaped sliding groove 6232. Multiple primary feed ports 6233 are equidistantly provided on the upper circumferential outer wall of the connection between the fixing rod 61 and the placement plate 6231. Multiple primary discharge ports 6234 are equidistantly provided on the upper circumferential outer wall of the connection between the fixing rod 61 and the first grinding table 621.

[0040] During operation, the operator places lithium carbonate raw material onto the placement plate 6231 through the main feed inlet 2. The lithium carbonate raw material slides downward along the inclined surface of the slide groove 6232, and the fixing rod 61 is rotated by an external motor. As the fixing rod 61 rotates, the lithium carbonate raw material gradually enters the inner cavity of the fixing rod 61 from the primary feed inlet 6233. This prevents the lithium carbonate raw material from clogging the primary feed inlet 6233 during the feeding process, which would affect the grinding efficiency. The lithium carbonate raw material that has entered the inner cavity of the fixing rod 61 is discharged evenly and uniformly from the primary discharge outlet 6234 to the upper surface of the first grinding table 621. Then, it slides down the inclined surface of the upper frustum of the first grinding table 621 between the grinding plate 622 and the first grinding table 621, so that the lithium carbonate raw material is initially processed. This prevents local blockage caused by a large amount of raw material being poured into the grinding cylinder 1 and insufficient grinding caused by excessive feeding speed. It ensures that the lithium carbonate raw material can be ground fully and uniformly, and guarantees the grinding accuracy.

[0041] like Figure 2 , Figure 3 and Figure 4 As shown, the water outlet unit 64 includes a fixing ring 641. A temporary storage cylinder 642 with an internal cavity is fixedly installed inside the grinding cylinder 1. The lower end face of the temporary storage cylinder 642 is rotatably equipped with a fixing ring 641 that is fixed to the gear ring 632 and has an internal cavity. A water storage cylinder 643 with an internal cavity is fixedly installed on the circumferential outer wall of the cylindrical section of the grinding cylinder 1. The water storage cylinder 643 is connected to the internal cavity of the temporary storage cylinder 642. The temporary storage cylinder 642 is connected to the internal cavity of the fixing ring 641. Multiple circumferentially evenly arranged L-shaped drain pipes 644 are equidistantly arranged on the lower end face of the gear ring 632. Taking the left drain pipe 644 as an example, the horizontal section of the left drain pipe 644 slopes downward from left to right. The drain pipe 644 is connected to the internal cavity of the fixing ring 641.

[0042] During operation, the external motor drives the gear ring 632 to rotate on the inner wall of the grinding cylinder 1. The gear ring 632 drives the fixed ring 641 to rotate synchronously. The fixed ring 641 rotates at the bottom of the temporary storage cylinder 642, and the fixed ring 641 and the temporary storage cylinder 642 are sealed together. The gear ring 632 drives multiple drain pipes 644 to rotate, so that the drain pipes 644 rotate continuously and wash the lithium carbonate raw material being ground between the first grinding table 621 and the grinding plate 622. The washing process removes some impurities and deposits attached to the lithium carbonate raw material, which helps to improve product quality. Secondly, the water flow removes impurities and deposits, preventing them from re-attaching to the grinding tools and raw materials and reducing grinding efficiency. Moreover, the water flow can also guide the lithium carbonate raw material to be fed, avoiding blockage during grinding.

[0043] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the upper end face of the inner wall of the fixed platform 66 is conical. The grinding assembly 651 includes a connecting rod 6511 with its axis extending from top to bottom. The connecting rod 6511 is fixedly installed on the lower end face of the first grinding platform 621. A fan-shaped second grinding platform 650 is fixedly sleeved on the lower part of the outer wall of the connecting rod 6511. The lower end face of the second grinding platform 650 is in contact with and parallel to the inclined surface of the upper end face of the inner wall of the fixed platform 66. A receiving plate 6512 is fixedly sleeved on the upper part of the outer wall of the connecting rod 6511. A guide plate 6513 in the shape of a right trapezoid is provided between the receiving plate 6512 and the second grinding platform 650.

[0044] like Figure 2 , Figure 6 and Figure 7 As shown, the feeding assembly 652 includes a feeding port 6521. The upper end face of the inner wall of the fixed platform 66 is provided with the feeding port 6521. The inner cavity of the fixed platform 66 is slidably provided with a filter frame 6522 corresponding to the position of the feeding port 6521. A filter screen is fixedly provided on the filter frame 6522. A plurality of protrusions 6510 are fixedly provided circumferentially at equal intervals on the lower end face of the second grinding platform 650. A plurality of pressure blocks 6523 corresponding to the protrusions 6510 are fixedly provided circumferentially at equal intervals on the upper end face of the filter frame 6522. Two vibration springs 6524 are provided between the lower end face of the filter frame 6522 and the inner cavity of the fixed platform 66.

[0045] like Figure 2 , Figure 6 and Figure 7As shown, a cylindrical gathering plate 6531 is fixedly installed on the inner circumferential wall of the fixed platform 66. The gathering plate 6531 is fan-shaped and its inner circumferential wall is parallel to the inclined surface of the guide plate 6513. A suction cylinder 6532 is fixedly installed inside the cavity of the grinding cylinder 1. A spiral rod 6533 fixed to the lower end face of the driven gear 633 is rotatably installed through the suction cylinder 6532. Multiple intermediate feed ports 6534 are equidistantly opened on the outer circumferential wall of the lower part of the suction cylinder 6532, and an intermediate discharge port 6535 is opened on the outer circumferential wall of the upper part of the suction cylinder 6532.

[0046] During operation, the external motor drives the connecting rod 6511 to rotate, which in turn drives the receiving plate 6512 to rotate. This causes the initially ground lithium carbonate raw material to fall from the notch in the receiving plate 6512 into the working area on the upper surface of the fixed platform 66. Subsequently, the rotating second grinding table 650, in conjunction with the fixed platform 66, performs fine grinding. When the connecting rod 6511 moves the second grinding table 650 to the grinding area 661, the initially ground lithium carbonate raw material falls along the guide plate 6513 onto one side of the second grinding table 650. The connecting rod 6511 drives the second grinding table 650 and multiple protrusions 6510 to rotate counterclockwise synchronously. This allows the second grinding table 650, in conjunction with the upper surface of the inner wall of the fixed platform 66, to perform fine grinding of the fallen lithium carbonate raw material. This achieves graded grinding of the same batch of lithium carbonate raw material, avoiding multiple screenings and grinding processes. It helps ensure that the particle size of the ground lithium carbonate raw material remains consistent, thus improving the quality of product processing.

[0047] Subsequently, when the second grinding table 650 and the guide plate 6513 bring a large amount of lithium carbonate raw material into the feeding area 662, the lithium carbonate raw material that meets the grinding requirements falls from the bottom of the filter screen to the feeding port 6521, and then is discharged from the main discharge port 3 and collected by the staff. When the multiple protrusions 6510 on the bottom of the second grinding table 650 are in contact with the corresponding pressure block 6523, the pressure block 6523 drives the filter screen frame 6522 and the filter screen to slide down synchronously and gradually compress the vibration spring 6524. When the multiple protrusions 6510 are not in contact with the upper surface of the pressure block 6523, the compressed vibration spring 6524 pushes the filter screen and the filter screen frame 6522 to move upward, pushing the filter screen to move up and down reciprocally. This can speed up the feeding rate of lithium carbonate raw material, avoid a large amount of lithium carbonate raw material accumulating on the upper surface of the fixed table 66, and prevent impurities and insufficiently ground lithium carbonate raw material from clogging the filter screen and reducing the feeding rate of lithium carbonate raw material.

[0048] Subsequently, as the second grinding table 650 and guide plate 6513 bring a large amount of lithium carbonate raw material into the suction zone 663, some of the insufficiently ground lithium carbonate raw material is further finely ground by the second grinding table 650 in conjunction with the fixed table 66. Some of the insufficiently ground lithium carbonate raw material is moved by the guide plate 6513 to the arc-shaped gap of the gathering plate 6531 at the upper end of the second grinding table 650, allowing the lithium carbonate raw material to enter the inner cavity of the suction cylinder 6532 through the intermediate feed inlet 6534. It is then driven upwards by the rotating screw 6533 and finally exits from the intermediate feed outlet. The material is discharged from the feed inlet 6535 to the upper end of the first grinding table 621, and slides along the inclined surface of the upper frustum of the first grinding table 621 to the space between the first grinding table 621 and the grinding plate 622 for secondary grinding. This ensures that the particle size of the lithium carbonate raw material discharged from the total discharge port 3 meets the product requirements, avoids the problem that some lithium carbonate raw materials are not fully ground due to the excessively fast grinding and feeding rate, helps to reduce the particle size difference of lithium carbonate raw materials, ensures the consistency and stability of the product, and simplifies the process flow of lithium carbonate raw material grinding and screening, thus improving work efficiency.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A lithium carbonate raw material dehydration feeding device, characterized in that, The grinding cylinder (1) is hollow inside and is divided into a cylindrical section and an inverted frustum section from top to bottom. The upper end face of the cylindrical section of the grinding cylinder (1) is provided with a main feed port (2). The top of the inner cavity of the grinding cylinder (1) is provided with a feeding assembly (623). The lower end face of the frustum section of the grinding cylinder (1) is provided with a main discharge port (3). A fixing ring (4) is fixedly provided on the lower end face of the outer circumference of the cylindrical section of the grinding cylinder (1). Three support legs (5) are fixedly provided circumferentially at equal intervals on the lower end face of the fixing ring (4). The inner cavity of the grinding cylinder (1) is provided with a grinding mechanism (6) for grinding lithium carbonate raw materials. The grinding mechanism (6) includes a fixed rod (61) with an internal cavity. The upper end face of the grinding cylinder (1) is rotatably provided with a fixed rod (61) extending from top to bottom. A first grinding unit (62) is provided on the fixed rod (61). The first grinding unit (62) includes a first grinding table (621) for coarse grinding of lithium carbonate raw materials. A grinding plate (622) is rotatably provided in the middle of the inner cavity of the grinding cylinder (1). A driving unit (63) for driving the grinding plate (622) to rotate is provided on the upper end face of the grinding plate (622). A water outlet unit (64) for rinsing lithium carbonate raw materials is provided in the inner cavity of the grinding cylinder (1). The lower end face of the grinding plate (622) is provided with a second grinding unit (65). The second grinding unit (65) includes a cylindrical fixed platform (66). The fixed platform (66), which is hollow inside, is divided into a grinding area (661), a feeding area (662), and a suction area (663) in a counterclockwise direction. The fixed platform (66) is provided with a grinding component (651) located in the grinding area (661). The grinding component (651) includes a second grinding platform (650) for fine grinding of lithium carbonate raw materials. The fixed platform (66) is provided with a feeding component (652) located in the feeding area (662). The fixed platform (66) is also provided with a suction component (653) for suctioning lithium carbonate raw materials for secondary grinding, and the suction component (653) is located in the suction area (663). The drive unit (63) includes a drive gear (631), the drive gear (631) is fixedly sleeved on the fixed rod (61), the inner wall of the grinding cylinder (1) is rotatably provided with a gear ring (632), the middle of the inner cavity of the grinding cylinder (1) is fixedly provided with a top plate (637), the lower end face of the top plate (637) is equidistantly provided with three circumferentially evenly distributed driven gears (633), and the three driven gears (633) are all located between the drive gear (631) and the gear ring (632). The outer circumferential wall of the fixed rod (61) is equidistantly provided with multiple swing rods (634), each swing rod (634) is L-shaped and a linkage gear (635) is fixedly sleeved on the vertical section of the swing rod (634). The inner circumferential wall of the grinding plate (622) is fixedly provided with a moving ring (636) that meshes with the linkage gear (635). The water outlet unit (64) includes a fixing ring (641) with an internal cavity. A temporary storage cylinder (642) with an internal cavity is fixedly installed inside the grinding cylinder (1). The lower end face of the temporary storage cylinder (642) is rotatably provided with a fixing ring (641) fixed to the gear ring (632). A water storage cylinder (643) with an internal cavity is fixedly installed on the circumferential outer wall of the cylindrical section of the grinding cylinder (1). The water storage cylinder (643) is connected to the inner cavity of the temporary storage cylinder (642). The temporary storage cylinder (642) is connected to the inner cavity of the fixing ring (641). A plurality of circumferentially evenly arranged L-shaped drain pipes (644) are equidistantly arranged on the lower end face of the gear ring (632). The horizontal section of the drain pipe (644) is inclined downward from left to right. The drain pipe (644) is connected to the inner cavity of the fixing ring (641).

2. The lithium carbonate raw material dehydration feeding device according to claim 1, characterized in that: The lower end face of the fixing rod (61) is fixedly provided with a first grinding table (621). The first grinding table (621) is composed of two truncated cones. The upper truncated cone of the first grinding table (621) is smaller at the top and larger at the bottom, and the lower truncated cone is larger at the bottom and smaller at the top. Multiple protrusions (6210) are fixedly provided at equal intervals on the circumferential outer wall of the lower truncated cone of the first grinding table (621). The grinding plate (622) is a hollow cylinder. The inner circumferential wall of the grinding plate (622) is in contact with and parallel to the inclined surface of the outer circumferential wall of the lower truncated cone of the first grinding table (621).

3. The lithium carbonate raw material dehydration feeding device according to claim 1, characterized in that: The feeding assembly (623) includes a placement plate (6231). The placement plate (6231) is fixedly installed on the top of the inner cavity of the grinding cylinder (1). The placement plate (6231) has an inverted frustum-shaped groove (6232). Multiple primary feed ports (6233) are equidistantly provided on the upper circumferential outer wall of the connection between the fixing rod (61) and the placement plate (6231). Multiple primary discharge ports (6234) are equidistantly provided on the upper circumferential outer wall of the connection between the fixing rod (61) and the first grinding table (621).

4. The lithium carbonate raw material dehydration feeding device according to claim 1, characterized in that: The upper end face of the inner wall of the fixed platform (66) is conical. The grinding assembly (651) includes a connecting rod (6511) with its axis extending from top to bottom. The connecting rod (6511) is fixedly installed on the lower end face of the first grinding platform (621). A fan-shaped second grinding platform (650) is fixedly sleeved on the lower part of the circumferential outer wall of the connecting rod (6511). The lower end face of the second grinding platform (650) is in contact with and parallel to the inclined surface of the upper end face of the inner wall of the fixed platform (66). A receiving plate (6512) is fixedly sleeved on the upper part of the circumferential outer wall of the connecting rod (6511). A guide plate (6513) in the shape of a right trapezoid is provided between the receiving plate (6512) and the second grinding platform (650).

5. The lithium carbonate raw material dehydration feeding device according to claim 4, characterized in that: The feeding assembly (652) includes a feeding port (6521). The upper end face of the inner wall of the fixed platform (66) is provided with the feeding port (6521). The inner cavity of the fixed platform (66) is slidably provided with a filter frame (6522) corresponding to the position of the feeding port (6521). A filter screen is fixedly provided on the filter frame (6522). The lower end face of the second grinding platform (650) is provided with a plurality of protrusions (6510) at equal intervals around the circumference. The upper end face of the filter frame (6522) is provided with a plurality of pressure blocks (6523) corresponding to the protrusions (6510) at equal intervals around the circumference. Two vibration springs (6524) are provided between the lower end face of the filter frame (6522) and the inner cavity of the fixed platform (66).

6. The lithium carbonate raw material dehydration feeding device according to claim 5, characterized in that: A cylindrical gathering plate (6531) is fixedly installed on the inner circumferential wall of the fixed platform (66). The gathering plate (6531) is fan-shaped and its inner circumferential wall is parallel to the inclined surface of the guide plate (6513). A suction cylinder (6532) is fixedly installed inside the cavity of the grinding cylinder (1). A spiral rod (6533) fixed to the lower end face of the driven gear (633) is rotatably installed through the suction cylinder (6532). Multiple intermediate feed ports (6534) are equidistantly opened on the outer circumferential wall of the lower part of the suction cylinder (6532). An intermediate discharge port (6535) is opened on the outer circumferential wall of the upper part of the suction cylinder (6532).

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