A lithium carbonate preparation washing device and method

Abstract

The present application belongs to the technical field of lithium carbonate preparation, and particularly relates to a lithium carbonate preparation and washing device and method. In the prior art, there are too many water stains on the surface layer of lithium carbonate, and small-granularity lithium carbonate flows away with the washing liquid, so that the washed lithium carbonate cannot be quickly taken out from the washing device. The present application provides the following scheme, which comprises a washing box, a top cover arranged on the top of the washing box, a sieve frame arranged in the washing box, a heater fixedly connected to the inner wall of each side of the washing box away from each other, and a driving structure arranged on one side of the washing box and used for driving the sieve frame to rotate. In the present application, the lithium carbonate in the sieve frame can be washed, and the water stains on the lithium carbonate can be dried, so that the lithium carbonate can be quickly dried in the later period. After drying, the lithium carbonate in the sieve frame can be quickly discharged from the washing box, so that the next batch of lithium carbonate can be washed. The fine sieve plate can collect small-granularity lithium carbonate.

Description

Technical Field

[0001] This invention relates to the field of lithium carbonate preparation technology, and in particular to a washing apparatus and method for preparing lithium carbonate. Background Technology

[0002] With the increasing global energy shortage, the development and utilization of new energy sources has become a common challenge for the world. Lithium carbonate is an important chemical raw material, and as a crucial foundational material for the development of lithium-ion batteries, it is widely used in automobiles and industrial production.

[0003] High-purity lithium carbonate production equipment requires washing the lithium carbonate during production, but existing technologies for washing lithium carbonate still have the following problems:

[0004] 1. In the existing technology, during the washing process of lithium carbonate, too much water residue remains on the surface of the lithium carbonate, which affects the subsequent drying of lithium carbonate and reduces the production speed of lithium carbonate.

[0005] 2. In the prior art, when washing lithium carbonate, there are a lot of small lithium carbonate particles on the bottom inner wall of the washing device. These small lithium carbonate particles are washed away with the washing liquid, resulting in waste of lithium carbonate and affecting the yield of lithium carbonate finished products.

[0006] 3. In the prior art, when washing lithium carbonate, it is not possible to quickly remove the washed lithium carbonate from the washing device, which means that the washing device cannot perform washing operations again during this period.

[0007] To address the above-mentioned problems, this invention proposes a lithium carbonate preparation and washing apparatus and method. Summary of the Invention

[0008] This invention provides a lithium carbonate preparation and washing apparatus and method, which solves the shortcomings of the prior art where too much water residue remains on the surface of lithium carbonate, and small lithium carbonate particles are washed away with the discharge of washing liquid, making it impossible to quickly remove the washed lithium carbonate from the washing apparatus.

[0009] This invention provides the following technical solution:

[0010] A washing apparatus for preparing lithium carbonate includes: a washing tank, a top cover on the top of the washing tank, a sieve frame inside the washing tank, and heaters fixedly connected to the inner walls of the opposite sides of the washing tank.

[0011] The drive structure, located on one side of the washing tank, is used to drive the screen frame to rotate, and to wash and spin-dry the lithium carbonate inside the screen frame.

[0012] The feeding structure is located inside the sieve frame and is used to inject lithium carbonate into the sieve frame;

[0013] The discharge structure, located on one side of the washing tank, is used to quickly discharge lithium carbonate from the screen frame.

[0014] In one possible design, the drive structure includes a drive motor fixedly connected to one side of the washing tank. A rotating shaft rotatably passes through one side of the washing tank and is fixedly connected to the output shaft of the drive motor. A fixed roller is fixedly connected to one end of the screen frame, and one end of the fixed roller extends into the rotating shaft and is rotatably connected to the rotating shaft via a round shaft. A through hole is provided on one side of the washing tank. A hollow tube rotatably passes through the other end of the screen frame, and one end of the hollow tube passes through the through hole. A fixed block is fixedly connected to one side of the washing tank, and a cylinder is fixedly connected to the bottom of the fixed block. A ring is fitted on the outer wall of the hollow tube. The ring is connected to the output shaft of the cylinder via a pull rope. By starting the drive motor, the screen frame is driven to rotate, thereby enabling the screen frame to be washed inside the washing tank. Similarly, the drive motor driving the screen frame to rotate rapidly enables the screen frame to spin dry the water stains on the lithium carbonate, facilitating the rapid drying of the lithium carbonate later.

[0015] In one possible design, the feeding structure includes a feeding ring fixedly connected to the top of the screen frame. A fixed shaft is fixedly connected inside the feeding ring. Two sector plates for closing the feeding ring are rotatably connected to the outer wall of the fixed shaft. Two first torsion springs are sleeved on the outer wall of the fixed shaft, and the two ends of the first torsion springs are fixedly connected to the two sector plates respectively. A feeding pipe slides through the top cover. Two protruding rods are fixedly connected to the bottom end of the feeding pipe, and the protruding rods cooperate with the sector plates. Pushing the feeding pipe downwards, the protruding rods push the sector plates to rotate around the fixed shaft, opening the feeding ring. Lithium carbonate is injected into the screen frame through the feeding pipe. Then, the feeding pipe is pulled out of the feeding ring. The sector plates close the feeding ring under the torsion of the first torsion springs. Thus, when the screen frame is driven to rotate later, the lithium carbonate in the screen frame will not detach from the feeding ring.

[0016] In one possible design, the discharge structure includes a tension spring fixedly connected to one side of the washing tank. A baffle is slidably fitted onto the outer wall of the fixing block, and the side of the baffle near the washing tank is fixedly connected to the other end of the tension spring. A second limiting block is provided on one side of the baffle to limit its movement, and the second limiting block is fixedly connected to the top of the fixing block. The bottom of the baffle has an inclined surface. A circular groove is provided on the side of the baffle near the washing tank to engage with a hollow tube. A sealing sheet for sealing the hollow tube is fixedly connected to the inner wall of one side of the circular groove. A first protrusion and a second protrusion are fixedly connected to the inner wall of one side of the washing tank. A plurality of second springs are fixedly connected to the top of the first protrusion. A first sealing plate for sealing the through hole is slidably connected to the inner wall of one side of the washing tank, and the bottom of the first sealing plate... The top of the second spring is fixedly connected to the second protrusion, and the bottom of the second protrusion is fixedly connected to multiple sliding rods. The outer wall of the sliding rod is slidably fitted with a second sealing plate, which is slidably connected to one side of the washing tank. The outer wall of the sliding rod is fitted with a first spring fixedly connected to the top of the second sealing plate, and the top of the first spring is fixedly connected to the bottom of the second protrusion. The tension of the spring can cause the sealing plate to be inserted into the hollow tube, thereby sealing the hollow tube and preventing lithium carbonate in the sieve frame from flowing out to the outside through the hollow tube. It can also prevent pure water leakage in the washing tank. The first sealing plate and the second sealing plate clamp the hollow tube under the elastic force of the second spring and the first spring, respectively. This not only prevents water leakage in the washing tank, but also facilitates the hollow tube to make way when it rotates later.

[0017] In one possible design, a liquid storage pipe is fixedly connected inside the washing tank. Multiple nozzles located above a sieve frame are fixedly connected to the bottom of the liquid storage pipe, and the bottom end of a feed pipe slides through the liquid storage pipe. A rotating shaft located below the sieve frame is fixedly connected inside the washing tank. A fine sieve plate is rotatably sleeved on the outer wall of the rotating shaft. Two second torsion springs are sleeved on the outer wall of the rotating shaft. The ends of the two second torsion springs that are close to each other are fixedly connected to the fine sieve plate, and the ends of the two second torsion springs that are far apart are respectively fixedly connected to one side of the inner wall of the washing tank. A collection plate is fixedly connected to one side of the top of the fine sieve plate. The nozzle sprays pure water onto the rotating screen frame to initially wash the lithium carbonate. As the nozzle continues to spray water until the screen frame is submerged in pure water, the lithium carbonate is washed thoroughly. When the drive motor drives the screen frame to wash and spin-dry the lithium carbonate in the washing tank, small lithium carbonate particles fall onto the fine screen plate through the screen frame and are collected. Later, when the screen frame and hollow tube rotate downwards to discharge the material, the screen frame contacts the fine screen plate, which pushes the fine screen plate to rotate, thereby moving the small lithium carbonate particles on the fine screen plate towards the collection plate for later collection and preventing the small lithium carbonate particles from being lost with the pure water.

[0018] In one possible design, the washing tanks are provided with multiple vents on the opposite sides. Two sliding plates for sealing the vents are slidably connected to the inner walls of each opposite side of the washing tank. A float plate is fixedly connected to the bottom of each sliding plate via a vertical rod. Multiple first limiting blocks for limiting the float plate are fixedly connected to the inner walls of each opposite side of the washing tank. When pure water injected into the washing tank by the nozzle submerges the sieve frame, the buoyancy of the float plate pushes the sliding plate upwards to seal the vents, preventing pure water from overflowing from the vents when the sieve frame rotates and washes inside the washing tank. When it is necessary to dry lithium carbonate, the sliding plate moves downwards to open the vents. At this time, water vapor inside the washing tank flows to the outside through the vents, facilitating effective drying of the lithium carbonate later.

[0019] In one possible design, the inner walls of the first and second sealing plates that are close to each other are provided with U-shaped sealing rings, and the inner wall of the top of the through hole is fixedly connected with a sealing gasket to increase the sealing between the top of the hollow tube and the inner wall of the top of the through hole. When the hollow tube is clamped between the first and second sealing plates, the U-shaped sealing rings can increase the sealing between the hollow tube and the first and second sealing plates respectively.

[0020] In one possible design, a fan located inside the washing tank is fixedly sleeved on the outer wall of the rotating shaft. When the drive motor drives the screen frame to rotate, the fan also rotates. The fan can cause the pure water in the washing tank to form a water flow, and the water flow impacts the center of the screen frame, thereby washing the lithium carbonate from all directions. In addition, during the later drying process, the drive motor drives the screen frame to rotate rapidly to spin dry the water stains on the lithium carbonate, and the fan rotates at the same time. The fan can increase the flow rate of hot air inside the screen frame, further increasing the contact area between the lithium carbonate and the hot air, and accelerating the drying of the lithium carbonate.

[0021] In one possible design, a rotating rod is rotatably connected to one side of the first sealing plate. A cam for striking the hollow tube and fine sieve plate is fixedly sleeved on the outer wall of the rotating rod. A gear is fixedly sleeved on the outer wall of the rotating rod. A U-shaped plate is fixedly connected to the inner wall of one side of the washing tank, and the bottom of the first sealing plate slides through the U-shaped plate. A rack that meshes with the gear is fixedly connected to the top of the U-shaped plate. When the hollow tube and sieve frame rotate downwards to discharge material, the sieve frame can push the fine sieve plate to rotate as well. When the hollow tube and the first sealing plate move downwards, the gear meshes with the rack. The gear drives the cam to rotate through the rotating rod. The rotation of the cam can simultaneously strike the hollow tube and the fine sieve plate, causing the lithium carbonate on the sieve frame and the fine sieve plate to slide to one side, accelerating the dumping of lithium carbonate, which is convenient for the washing tank to continue washing the next batch of lithium carbonate. The collection plate can collect the lithium carbonate on the fine sieve plate.

[0022] The method of using the lithium carbonate preparation washing device includes the following steps:

[0023] S1. Push the feed pipe downwards and insert it into the feed ring. The protruding rod pushes the sector plate to rotate around the fixed axis, opening the feed ring and injecting lithium carbonate into the screen frame through the feed pipe. Then, pull the feed pipe out of the feed ring, and the sector plate closes the feed ring under the torque of the first torsion spring.

[0024] S2. Start the drive motor to drive the fixed roller, rotating shaft and screen frame to rotate. Spray pure water onto the screen frame through the nozzle to initially rinse the lithium carbonate in the screen frame. As the water is sprayed onto the screen frame, the liquid level of pure water in the washing tank gradually rises. At this time, the liquid level submerges the screen frame. The buoyancy of the float pushes the sliding plate to move up and close the vent hole to prevent pure water from overflowing from the vent hole when cleaning lithium carbonate later.

[0025] S3. Start the heater. The heater heats the pure water in the washing tank to 95°C. The drive motor drives the screen frame to rotate rapidly through the fixed roller and rotating shaft. This allows the lithium carbonate to rotate rapidly in the pure water, which can improve the cleaning efficiency of the lithium carbonate. In addition, the rotating shaft drives the fan to rotate rapidly. The fan creates a water flow in the washing tank, and the water flows towards the center of the screen frame, which can wash the lithium carbonate thoroughly and without dead angles. Then, the washing water is discharged through the drain outlet (not shown in the figure), and the lithium carbonate is washed again through the spray nozzle. Repeat the operation to wash the lithium carbonate 3-5 times.

[0026] S4. After washing, drain the pure water. Under the action of gravity, the sliding plate releases the seal on the vent. Start the drive motor, which drives the screen frame to rotate at high speed. The centrifugal force is used to spin off the water stains on the surface of the lithium carbonate. At the same time, start the heater to heat the temperature inside the washing tank, further drying the lithium carbonate. When the drive motor drives the screen frame to rotate at high speed, the fan also rotates. The rotation of the fan can drive the airflow in the washing tank. The airflow blows towards the center of the screen frame, which can increase the contact area between the lithium carbonate and the hot air, accelerating the drying of the lithium carbonate. During the process of hot air flow, water vapor can be discharged to the outside through the vent. During the washing and drying process of lithium carbonate while the screen frame is rotating, small particles of lithium carbonate in the screen frame fall onto the fine screen plate. The fine screen plate collects the small particles of lithium carbonate, preventing them from flowing out with the pure water.

[0027] S5. Start the cylinder. The output shaft of the cylinder pushes the ring and hollow tube downward. The hollow tube, screen frame, and fixed roller rotate around the inner shaft of the rotating shaft. When the hollow tube rotates downward, it can push the first sealing plate downward. The lithium carbonate in the screen frame is poured out to the outside along with the hollow tube. When the hollow tube and screen frame rotate downward, the screen frame can push the fine screen plate to rotate as well. When the hollow tube and the first sealing plate move downward, the gear and rack mesh. The gear drives the cam to rotate through the rotating rod. The rotation of the cam can simultaneously strike the hollow tube and the fine screen plate, which can make the lithium carbonate on the screen frame and the fine screen plate slide to one side, accelerate the dumping of lithium carbonate, and facilitate the washing of the next batch of lithium carbonate in the washing tank. The collection plate can collect the lithium carbonate on the fine screen plate.

[0028] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0029] In this invention, a rotating rod is rotatably connected to one side of the first sealing plate. A cam and a gear are fixedly sleeved on the outer wall of the rotating rod. A U-shaped plate is fixedly connected to the inner wall of one side of the washing tank. A rack is fixedly connected to the top of the U-shaped plate. When the hollow tube and the screen frame rotate downward to discharge material, the screen frame can push the fine screen plate to rotate as well. When the hollow tube and the first sealing plate move downward, the gear meshes with the rack. The gear drives the cam to rotate through the rotating rod. The rotation of the cam can simultaneously strike the hollow tube and the fine screen plate, causing the lithium carbonate on the screen frame and the fine screen plate to slide to one side, accelerating the dumping of lithium carbonate, which is convenient for the washing tank to continue washing the next batch of lithium carbonate. The collection plate can collect the lithium carbonate on the fine screen plate.

[0030] In this invention, a fine sieve plate is rotatably sleeved on the outer wall of the rotating shaft, and two second torsion springs are sleeved on the outer wall of the rotating shaft. The ends of the two second torsion springs that are close to each other are fixedly connected to the fine sieve plate, and the ends of the two second torsion springs that are far from each other are respectively fixedly connected to one side of the inner wall of the washing tank. A collection plate is fixedly connected to the top side of the fine sieve plate. When the drive motor drives the sieve frame to wash and spin dry lithium carbonate in the washing tank, small particles of lithium carbonate fall onto the fine sieve plate through the sieve frame and are collected through the fine sieve plate. Later, when the sieve frame and the hollow tube rotate downward to discharge the material, the sieve frame touches the fine sieve plate, which can push the fine sieve plate to rotate, thereby moving the small particles of lithium carbonate on the fine sieve plate toward the collection plate, which is convenient for later collection and avoids the loss of small particles of lithium carbonate with pure water.

[0031] In this invention, a rotating shaft is rotatably passed through one side of the washing tank, a fixed roller is fixedly connected to one end of the screen frame, and the fixed roller is rotatably connected to the rotating shaft. A through hole is provided on one side of the washing tank, and a hollow tube is rotatably passed through the other end of the screen frame, with one end of the hollow tube passing through the through hole. A fixed block is fixedly connected to one side of the washing tank, and a cylinder is fixedly connected to the bottom of the fixed block. A ring is fitted on the outer wall of the hollow tube, and the ring is connected to the output shaft of the cylinder by a pull rope. By starting the drive motor, the screen frame is driven to rotate, thereby enabling the screen frame to be washed in the washing tank. Similarly, the drive motor drives the screen frame to rotate quickly, which enables the screen frame to spin dry the water stains on the lithium carbonate, making it easier to quickly dry the lithium carbonate later.

[0032] In this invention, a fixing block is fixedly connected to one side of the washing tank, and a cylinder is fixedly connected to the bottom of the fixing block. A ring is fitted on the outer wall of the hollow tube, and the ring is connected to the output shaft of the cylinder by a pull rope. The output shaft of the cylinder pushes the ring and the hollow tube to move downward. The hollow tube, the sieve frame, and the fixing roller rotate around the circular shaft inside the rotating shaft. When the hollow tube rotates downward, it can push the first sealing plate to move downward, and the lithium carbonate in the sieve frame is poured out to the outside along with the hollow tube, which can directly discharge the lithium carbonate in the sieve frame, making it convenient for the washing tank to continue washing the next batch of lithium carbonate.

[0033] In this invention, a drive motor can drive the screen frame to rotate inside the washing tank. This not only washes the lithium carbonate inside the screen frame but also allows the screen frame to rotate rapidly, shaking off the water stains on the lithium carbonate for quick drying later. After drying, the screen frame can be rotated directly to quickly discharge the lithium carbonate inside the screen frame from the washing tank, facilitating the washing of the next batch of lithium carbonate. In addition, a fine sieve plate can collect small particles of lithium carbonate, avoiding waste. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural schematic diagram of a lithium carbonate preparation and washing apparatus provided in an embodiment of the present invention;

[0035] Figure 2 This is a first-view three-dimensional cross-sectional structural diagram of a lithium carbonate preparation and washing apparatus provided in an embodiment of the present invention;

[0036] Figure 3 This is a second-view three-dimensional cross-sectional structural diagram of a lithium carbonate preparation and washing apparatus provided in an embodiment of the present invention;

[0037] Figure 4 This is a three-dimensional cross-sectional view of the sieve frame of a lithium carbonate preparation washing apparatus provided in an embodiment of the present invention;

[0038] Figure 5This is a three-dimensional cross-sectional view of the feed ring of a lithium carbonate preparation washing apparatus provided in an embodiment of the present invention;

[0039] Figure 6 This is a three-dimensional structural diagram of the first and second sealing plates of a lithium carbonate preparation washing apparatus provided in an embodiment of the present invention.

[0040] Figure 7 This is a three-dimensional cross-sectional view of the fixing block and baffle of a lithium carbonate preparation washing device provided in an embodiment of the present invention;

[0041] Figure 8 This is a three-dimensional structural diagram of the sliding plate and the floating plate of a lithium carbonate preparation washing device provided in an embodiment of the present invention;

[0042] Figure 9 This is a three-dimensional structural schematic diagram of a fine sieve plate in a lithium carbonate preparation washing apparatus provided in an embodiment of the present invention;

[0043] Figure 10 This is a partial side cross-sectional view of a lithium carbonate preparation and washing apparatus provided in Embodiment 2 of the present invention.

[0044] Figure label:

[0045] 1. Washing tank; 2. Top cover; 3. Screen frame; 4. Hollow tube; 5. Fixed roller; 6. Rotating shaft; 7. Drive motor; 8. Fixed block; 9. Cylinder; 10. Pull rope; 11. Ring; 12. Through hole; 13. Protruding rod; 14. Feed ring; 15. Fixed shaft; 16. Sector plate; 17. First torsion spring; 18. Slide rod; 19. First spring; 20. Baffle; 21. Tension spring; 22. Circular groove; 23. Sealing plate; 24. Vent hole; 25. Sliding plate; 26. Float plate; 27. 28. First limiting block; 29. ​​Liquid storage pipe; 30. Nozzle; 31. Fine sieve plate; 32. Rotating shaft; 33. Second torsion spring; 34. Collecting plate; 35. Fan; 36. Second limiting block; 37. Inclined surface; 38. U-shaped sealing ring; 39. Heater; 40. Rotating rod; 41. Gear; 42. Cam; 43. Rack; 44. U-shaped plate; 45. First sealing plate; 46. Second spring; 47. First protrusion; 48. Second protrusion; 49. Second sealing plate; 40. Feed pipe. Detailed Implementation

[0046] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0047] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0048] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0049] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0050] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0051] Example 1

[0052] Reference Figure 1 , Figure 2 and Figure 3This embodiment of a lithium carbonate preparation washing apparatus includes: a washing tank 1, a top cover 2 on the top of the washing tank 1, a sieve frame 3 inside the washing tank 1, heaters 38 fixedly connected to the inner walls of the opposite sides of the washing tank 1 by bolts, a drive structure located on one side of the washing tank 1 for driving the sieve frame 3 to rotate and wash and spin dry the lithium carbonate inside the sieve frame 3, a feeding structure located inside the sieve frame 3 for injecting lithium carbonate into the sieve frame 3, and a discharge structure located on one side of the washing tank 1 for quickly discharging the lithium carbonate inside the sieve frame 3.

[0053] Reference Figure 2 and Figure 8 Multiple ventilation holes 24 are provided on the opposite sides of the washing tank 1. Two sliding plates 25 for sealing the ventilation holes 24 are slidably connected to the inner wall of the opposite side of the washing tank 1. A float plate 26 is fixedly connected to the bottom of the sliding plate 25 by a vertical rod. Multiple first limiting blocks 27 for limiting the float plate 26 are fixedly connected to the inner wall of the opposite side of the washing tank 1 by bolts. When the pure water injected into the washing tank 1 by the nozzle 29 submerges the screen frame 3, the buoyancy of the float plate 26 pushes the sliding plate 25 to move upward and seal the ventilation holes 24, preventing pure water from overflowing from the ventilation holes 24 when the screen frame 3 rotates and is washed in the washing tank 1. When it is necessary to dry lithium carbonate, the sliding plate 25 moves downward and opens the ventilation holes 24. At this time, water vapor in the washing tank 1 flows to the outside through the ventilation holes 24, which facilitates the effective drying of lithium carbonate in the later stage.

[0054] Reference Figure 4 and Figure 7 The drive structure includes a drive motor 7 fixedly connected to one side of the washing tank 1 by bolts. A rotating shaft 6 is rotatably passed through one side of the washing tank 1, and the rotating shaft 6 is fixedly connected to the output shaft of the drive motor 7 by a coupling. One end of the screen frame 3 is fixedly connected to a fixing roller 5 by bolts, and one end of the fixing roller 5 extends into the rotating shaft 6 and is rotatably connected to the rotating shaft 6 by a round shaft. One side of the washing tank 1 is provided with a through hole 12. The other end of the screen frame 3 is rotatably passed through a hollow tube 4, and one end of the hollow tube 4 passes through the through hole 12. One side of the washing tank 1 is fixedly connected to a fixing block 8 by bolts. The bottom of the fixing block 8 is fixedly connected to a cylinder 9 by bolts. A ring 11 is fitted on the outer wall of the hollow tube 4. The ring 11 is connected to the output shaft of the cylinder 9 by a pull rope 10. By starting the drive motor 7, the screen frame 3 is driven to rotate, thereby enabling the screen frame 3 to be washed in the washing tank 1. Similarly, the drive motor 7 drives the screen frame 3 to rotate quickly, which enables the screen frame 3 to spin dry the water stains on the lithium carbonate, which is convenient for the rapid drying of the lithium carbonate later.

[0055] Reference Figure 4A fan 34 located inside the washing tank 1 is fixedly sleeved on the outer wall of the rotating shaft 6. When the drive motor 7 drives the screen frame 3 to rotate, the fan 34 also rotates. The fan 34 can make the pure water in the washing tank 1 form a water flow and make the water flow impact the center of the screen frame 3, thereby washing the lithium carbonate in all directions. In addition, during the later drying process, the drive motor 7 drives the screen frame 3 to rotate rapidly to spin dry the water stains on the lithium carbonate, and the fan 34 rotates at the same time. The fan 34 can increase the flow rate of hot air inside the screen frame 3, further increase the contact area between the lithium carbonate and the hot air, and accelerate the drying of the lithium carbonate.

[0056] Reference Figure 4 and Figure 5 The feeding structure includes a feeding ring 14 bolted to the top of the screen frame 3. A fixed shaft 15 is fixedly connected inside the feeding ring 14. Two sector plates 16 for closing the feeding ring 14 are rotatably connected to the outer wall of the fixed shaft 15. Two first torsion springs 17 are sleeved on the outer wall of the fixed shaft 15, and the two ends of the first torsion springs 17 are fixedly connected to the two sector plates 16 respectively. A feeding pipe 49 slides through the top cover 2. Two protruding rods 13 are bolted to the bottom end of the feeding pipe 49. Furthermore, the protruding rod 13 cooperates with the sector plate 16 to push the feed pipe 49 downward into the feed ring 14. The protruding rod 13 pushes the sector plate 16 to rotate around the fixed shaft 15, opening the feed ring 14 and injecting lithium carbonate into the screen frame 3 through the feed pipe 49. Then, the feed pipe 49 is pulled out from the feed ring 14, and the sector plate 16 closes the feed ring 14 under the torque of the first torsion spring 17. Thus, when the screen frame 3 is driven to rotate later, the lithium carbonate in the screen frame 3 will not detach from the feed ring 14.

[0057] Reference Figure 6 and Figure 7The discharge structure includes a tension spring 21 fixedly connected to one side of the washing tank 1. A baffle 20 is slidably sleeved on the outer wall of the fixing block 8, and the side of the baffle 20 near the washing tank 1 is fixedly connected to the other end of the tension spring 21. A second limiting block 35 is provided on one side of the baffle 20 to limit the baffle 20, and the second limiting block 35 is fixedly connected to the top of the fixing block 8 by bolts. The bottom of the baffle 20 is provided with an inclined surface 36. A circular groove 22 that engages with the hollow tube 4 is provided on the side of the baffle 20 near the washing tank 1. A sealing plate 23 that closes the hollow tube 4 is fixedly connected to the inner wall of one side of the circular groove 22 by bolts. A first protrusion 46 and a second protrusion 47 are fixedly connected to the inner wall of one side of the washing tank 1. A plurality of second springs 45 are fixedly connected to the top of the first protrusion 46. A first sealing plate 44 for closing the through hole 12 is slidably connected to the inner wall of one side of the washing tank 1, and the bottom of the first sealing plate 44 is connected to the first spring 47. The top of the second spring 45 is fixedly connected, and the bottom of the second protrusion 47 is fixedly connected to multiple sliding rods 18. The outer wall of the sliding rod 18 is slidably fitted with a second sealing plate 48. The second sealing plate 48 is slidably connected to one side of the washing tank 1. The outer wall of the sliding rod 18 is fitted with a first spring 19 that is fixedly connected to the top of the second sealing plate 48, and the top of the first spring 19 is fixedly connected to the bottom of the second protrusion 47. The tension of the tension spring 21 can cause the sealing plate 23 to be inserted into the hollow tube 4, thereby sealing the hollow tube 4 and preventing the lithium carbonate in the sieve frame 3 from flowing out to the outside through the hollow tube 4. It can also prevent the pure water in the washing tank 1 from leaking. The first sealing plate 44 and the second sealing plate 48 clamp the hollow tube 4 under the elastic force of the second spring 45 and the first spring 19, respectively. This not only prevents the water in the washing tank 1 from leaking, but also makes it easier for the hollow tube 4 to rotate later.

[0058] Reference Figure 2 and Figure 9Inside the washing tank 1, a liquid storage pipe 28 is fixedly connected by bolts. Multiple nozzles 29 located above the sieve frame 3 are fixedly connected to the bottom of the liquid storage pipe 28, and the bottom end of the feed pipe 49 slides through the liquid storage pipe 28. Inside the washing tank 1, a rotating shaft 31 located below the sieve frame 3 is fixedly connected. A fine sieve plate 30 is rotatably sleeved on the outer wall of the rotating shaft 31. Two second torsion springs 32 are sleeved on the outer wall of the rotating shaft 31. The ends of the two second torsion springs 32 that are close to each other are fixedly connected to the fine sieve plate 30, and the ends that are far apart from each other are fixedly connected to one side of the inner wall of the washing tank 1. A collection plate 33 is fixedly connected to one side of the top of the fine sieve plate 30. The feed is directed through the nozzles 29 to... The spraying of pure water into the rotating screen frame 3 can initially wash the lithium carbonate. As the nozzle 29 continues to spray water until the screen frame 3 is submerged in pure water, the lithium carbonate can be washed in all directions. When the drive motor 7 drives the screen frame 3 to wash and spin-dry the lithium carbonate in the washing tank 1, small lithium carbonate particles fall onto the fine screen plate 30 through the screen frame 3 and are collected through the fine screen plate 30. Later, when the screen frame 3 and the hollow tube 4 rotate downward to discharge the material, the screen frame 3 contacts the fine screen plate 30, which can push the fine screen plate 30 to rotate, thereby moving the small lithium carbonate particles on the fine screen plate 30 towards the collection plate 33 for later collection and to prevent the small lithium carbonate particles from being lost with the pure water.

[0059] Reference Figure 6 The inner walls of the first sealing plate 44 and the second sealing plate 48 that are close to each other are provided with U-shaped sealing rings 37. The inner wall of the top of the through hole 12 is fixedly connected with a sealing gasket to increase the sealing between the top of the hollow tube 4 and the inner wall of the top of the through hole 12. When the hollow tube 4 is clamped by the first sealing plate 44 and the second sealing plate 48, the U-shaped sealing rings 37 can increase the sealing between the hollow tube 4 and the first sealing plate 44 and the second sealing plate 48 respectively.

[0060] Example 2

[0061] Reference Figure 1 , Figure 2 and Figure 3 This embodiment of a lithium carbonate preparation washing apparatus includes: a washing tank 1, a top cover 2 on the top of the washing tank 1, a sieve frame 3 inside the washing tank 1, heaters 38 fixedly connected to the inner walls of the opposite sides of the washing tank 1 by bolts, a drive structure located on one side of the washing tank 1 for driving the sieve frame 3 to rotate and wash and spin dry the lithium carbonate inside the sieve frame 3, a feeding structure located inside the sieve frame 3 for injecting lithium carbonate into the sieve frame 3, and a discharge structure located on one side of the washing tank 1 for quickly discharging the lithium carbonate inside the sieve frame 3.

[0062] Reference Figure 2 and Figure 8Multiple ventilation holes 24 are provided on the opposite sides of the washing tank 1. Two sliding plates 25 for sealing the ventilation holes 24 are slidably connected to the inner wall of the opposite side of the washing tank 1. A float plate 26 is fixedly connected to the bottom of the sliding plate 25 by a vertical rod. Multiple first limiting blocks 27 for limiting the float plate 26 are fixedly connected to the inner wall of the opposite side of the washing tank 1 by bolts. When the pure water injected into the washing tank 1 by the nozzle 29 submerges the screen frame 3, the buoyancy of the float plate 26 pushes the sliding plate 25 to move upward and seal the ventilation holes 24, preventing pure water from overflowing from the ventilation holes 24 when the screen frame 3 rotates and is washed in the washing tank 1. When it is necessary to dry lithium carbonate, the sliding plate 25 moves downward and opens the ventilation holes 24. At this time, water vapor in the washing tank 1 flows to the outside through the ventilation holes 24, which facilitates the effective drying of lithium carbonate in the later stage.

[0063] Reference Figure 4 and Figure 7 The drive structure includes a drive motor 7 fixedly connected to one side of the washing tank 1 by bolts. A rotating shaft 6 is rotatably passed through one side of the washing tank 1, and the rotating shaft 6 is fixedly connected to the output shaft of the drive motor 7 by a coupling. One end of the screen frame 3 is fixedly connected to a fixing roller 5 by bolts, and one end of the fixing roller 5 extends into the rotating shaft 6 and is rotatably connected to the rotating shaft 6 by a round shaft. One side of the washing tank 1 is provided with a through hole 12. The other end of the screen frame 3 is rotatably passed through a hollow tube 4, and one end of the hollow tube 4 passes through the through hole 12. One side of the washing tank 1 is fixedly connected to a fixing block 8 by bolts. The bottom of the fixing block 8 is fixedly connected to a cylinder 9 by bolts. A ring 11 is fitted on the outer wall of the hollow tube 4. The ring 11 is connected to the output shaft of the cylinder 9 by a pull rope 10. By starting the drive motor 7, the screen frame 3 is driven to rotate, thereby enabling the screen frame 3 to be washed in the washing tank 1. Similarly, the drive motor 7 drives the screen frame 3 to rotate quickly, which enables the screen frame 3 to spin dry the water stains on the lithium carbonate, which is convenient for the rapid drying of the lithium carbonate later.

[0064] Reference Figure 4 A fan 34 located inside the washing tank 1 is fixedly sleeved on the outer wall of the rotating shaft 6. When the drive motor 7 drives the screen frame 3 to rotate, the fan 34 also rotates. The fan 34 can make the pure water in the washing tank 1 form a water flow and make the water flow impact the center of the screen frame 3, thereby washing the lithium carbonate in all directions. In addition, during the later drying process, the drive motor 7 drives the screen frame 3 to rotate rapidly to spin dry the water stains on the lithium carbonate, and the fan 34 rotates at the same time. The fan 34 can increase the flow rate of hot air inside the screen frame 3, further increase the contact area between the lithium carbonate and the hot air, and accelerate the drying of the lithium carbonate.

[0065] Reference Figure 4 and Figure 5The feeding structure includes a feeding ring 14 bolted to the top of the screen frame 3. A fixed shaft 15 is fixedly connected inside the feeding ring 14. Two sector plates 16 for closing the feeding ring 14 are rotatably connected to the outer wall of the fixed shaft 15. Two first torsion springs 17 are sleeved on the outer wall of the fixed shaft 15, and the two ends of the first torsion springs 17 are fixedly connected to the two sector plates 16 respectively. A feeding pipe 49 slides through the top cover 2. Two protruding rods 13 are bolted to the bottom end of the feeding pipe 49. Furthermore, the protruding rod 13 cooperates with the sector plate 16 to push the feed pipe 49 downward into the feed ring 14. The protruding rod 13 pushes the sector plate 16 to rotate around the fixed shaft 15, opening the feed ring 14 and injecting lithium carbonate into the screen frame 3 through the feed pipe 49. Then, the feed pipe 49 is pulled out from the feed ring 14, and the sector plate 16 closes the feed ring 14 under the torque of the first torsion spring 17. Thus, when the screen frame 3 is driven to rotate later, the lithium carbonate in the screen frame 3 will not detach from the feed ring 14.

[0066] Reference Figure 6 and Figure 7 The discharge structure includes a tension spring 21 fixedly connected to one side of the washing tank 1. A baffle 20 is slidably sleeved on the outer wall of the fixing block 8, and the side of the baffle 20 near the washing tank 1 is fixedly connected to the other end of the tension spring 21. A second limiting block 35 is provided on one side of the baffle 20 to limit the baffle 20, and the second limiting block 35 is fixedly connected to the top of the fixing block 8 by bolts. The bottom of the baffle 20 is provided with an inclined surface 36. A circular groove 22 that engages with the hollow tube 4 is provided on the side of the baffle 20 near the washing tank 1. A sealing plate 23 that closes the hollow tube 4 is fixedly connected to the inner wall of one side of the circular groove 22 by bolts. A first protrusion 46 and a second protrusion 47 are fixedly connected to the inner wall of one side of the washing tank 1. A plurality of second springs 45 are fixedly connected to the top of the first protrusion 46. A first sealing plate 44 for closing the through hole 12 is slidably connected to the inner wall of one side of the washing tank 1, and the bottom of the first sealing plate 44 is connected to the first spring 47. The top of the second spring 45 is fixedly connected, and the bottom of the second protrusion 47 is fixedly connected to multiple sliding rods 18. The outer wall of the sliding rod 18 is slidably fitted with a second sealing plate 48. The second sealing plate 48 is slidably connected to one side of the washing tank 1. The outer wall of the sliding rod 18 is fitted with a first spring 19 that is fixedly connected to the top of the second sealing plate 48, and the top of the first spring 19 is fixedly connected to the bottom of the second protrusion 47. The tension of the tension spring 21 can cause the sealing plate 23 to be inserted into the hollow tube 4, thereby sealing the hollow tube 4 and preventing the lithium carbonate in the sieve frame 3 from flowing out to the outside through the hollow tube 4. It can also prevent the pure water in the washing tank 1 from leaking. The first sealing plate 44 and the second sealing plate 48 clamp the hollow tube 4 under the elastic force of the second spring 45 and the first spring 19, respectively. This not only prevents the water in the washing tank 1 from leaking, but also makes it easier for the hollow tube 4 to rotate later.

[0067] Reference Figure 2 and Figure 9 Inside the washing tank 1, a liquid storage pipe 28 is fixedly connected by bolts. Multiple nozzles 29 located above the sieve frame 3 are fixedly connected to the bottom of the liquid storage pipe 28, and the bottom end of the feed pipe 49 slides through the liquid storage pipe 28. Inside the washing tank 1, a rotating shaft 31 located below the sieve frame 3 is fixedly connected. A fine sieve plate 30 is rotatably sleeved on the outer wall of the rotating shaft 31. Two second torsion springs 32 are sleeved on the outer wall of the rotating shaft 31. The ends of the two second torsion springs 32 that are close to each other are fixedly connected to the fine sieve plate 30, and the ends that are far apart from each other are fixedly connected to one side of the inner wall of the washing tank 1. A collection plate 33 is fixedly connected to one side of the top of the fine sieve plate 30. The feed is directed through the nozzles 29 to... The spraying of pure water into the rotating screen frame 3 can initially wash the lithium carbonate. As the nozzle 29 continues to spray water until the screen frame 3 is submerged in pure water, the lithium carbonate can be washed in all directions. When the drive motor 7 drives the screen frame 3 to wash and spin-dry the lithium carbonate in the washing tank 1, small lithium carbonate particles fall onto the fine screen plate 30 through the screen frame 3 and are collected through the fine screen plate 30. Later, when the screen frame 3 and the hollow tube 4 rotate downward to discharge the material, the screen frame 3 contacts the fine screen plate 30, which can push the fine screen plate 30 to rotate, thereby moving the small lithium carbonate particles on the fine screen plate 30 towards the collection plate 33 for later collection and to prevent the small lithium carbonate particles from being lost with the pure water.

[0068] Reference Figure 6 The inner walls of the first sealing plate 44 and the second sealing plate 48 that are close to each other are provided with U-shaped sealing rings 37. The inner wall of the top of the through hole 12 is fixedly connected with a sealing gasket to increase the sealing between the top of the hollow tube 4 and the inner wall of the top of the through hole 12. When the hollow tube 4 is clamped by the first sealing plate 44 and the second sealing plate 48, the U-shaped sealing rings 37 can increase the sealing between the hollow tube 4 and the first sealing plate 44 and the second sealing plate 48 respectively.

[0069] Reference Figure 10A rotating rod 39 is rotatably connected to one side of the first sealing plate 44. A cam 41 for striking the hollow tube 4 and the fine screen plate 30 is fixedly sleeved on the outer wall of the rotating rod 39. A gear 40 is fixedly sleeved on the outer wall of the rotating rod 39. A U-shaped plate 43 is bolted to one side of the inner wall of the washing tank 1, and the bottom of the first sealing plate 44 slides through the U-shaped plate 43. A rack 42 that meshes with the gear 40 is bolted to the top of the U-shaped plate 43. When the hollow tube 4 and the screen frame 3 rotate downwards to discharge material, the screen frame... 3 can also drive the fine sieve plate 30 to rotate. When the hollow tube 4 and the first closed plate 44 move down, the gear 40 meshes with the rack 42. The gear 40 drives the cam 41 to rotate through the rotating rod 39. The rotation of the cam 41 can simultaneously strike the hollow tube 4 and the fine sieve plate 30, causing the lithium carbonate on the sieve frame 3 and the fine sieve plate 30 to slide to one side, accelerating the dumping of lithium carbonate, which is convenient for the washing tank 1 to continue washing the next batch of lithium carbonate. The collection plate 33 can collect the lithium carbonate on the fine sieve plate 30.

[0070] Reference Figure 3 Heater 38 is the same model as the heater in the utility model with announcement number CN211521613U.

[0071] A method of using a lithium carbonate preparation washing apparatus includes the following steps:

[0072] S1. Push the feed pipe 49 downward and insert it into the feed ring 14. The protruding rod 13 pushes the sector plate 16 to rotate around the fixed shaft 15, opening the feed ring 14. Lithium carbonate is injected into the screen frame 3 through the feed pipe 49. Then, the feed pipe 49 is pulled out from the feed ring 14, and the sector plate 16 closes the feed ring 14 under the torque of the first torsion spring 17.

[0073] S2. Start the drive motor 7 to drive the fixed roller 5, the rotating shaft 6 and the screen frame 3 to rotate. Spray pure water onto the screen frame 3 through the nozzle 29. The lithium carbonate in the screen frame 3 is initially rinsed by the nozzle 29. As the water is sprayed onto the screen frame 3 by the nozzle 29, the liquid level of pure water in the washing tank 1 gradually rises. At this time, the liquid level submerges the screen frame 3. The buoyancy of the float plate 26 pushes the sliding plate 25 to move up and close the vent hole 24 to prevent pure water from overflowing from the vent hole 24 when cleaning lithium carbonate later.

[0074] S3. Start the heater 38. The heater 38 heats the pure water in the washing tank 1 to 95°C. The drive motor 7 drives the screen frame 3 to rotate rapidly through the fixed roller 5 and the rotating shaft 6. This allows the lithium carbonate to rotate rapidly in the pure water, which can improve the cleaning efficiency of the lithium carbonate. In addition, the rotating shaft 6 drives the fan 34 to rotate rapidly. The fan 34 forms a water flow in the washing tank 1, and the water flows towards the center of the screen frame 3, which can wash the lithium carbonate thoroughly and without dead angles. Then, the washing water is discharged through the drain outlet (not shown in the figure) and washed again through the spray nozzle 29. The operation is repeated to wash the lithium carbonate 3-5 times.

[0075] S4. After washing, drain the pure water. Under the action of gravity, the sliding plate 25 releases the seal on the vent 24. Start the drive motor 7. The drive motor 7 drives the screen frame 3 to rotate at high speed. The water stains on the surface of the lithium carbonate are spun off by centrifugal force. The heater 38 is started to heat the temperature inside the washing tank 1 to further dry the lithium carbonate. When the drive motor 7 drives the screen frame 3 to rotate at high speed, the fan 34 also rotates. The rotation of the fan 34 can drive the airflow in the washing tank 1. The airflow blows towards the center of the screen frame 3, thereby increasing the contact area between the lithium carbonate and the hot air and accelerating the drying of the lithium carbonate. During the flow of hot air, water vapor can be discharged to the outside through the vent 24. During the washing and drying process of the lithium carbonate while the screen frame 3 is rotating, small particles of lithium carbonate in the screen frame 3 fall onto the fine screen plate 30 through the screen frame 3. The fine screen plate 30 collects the small particles of lithium carbonate and prevents the small particles of lithium carbonate from flowing out with the pure water.

[0076] S5. Start cylinder 9. The output shaft of cylinder 9 pushes the ring 11 and hollow tube 4 downward. Hollow tube 4, screen frame 3 and fixed roller 5 rotate around the circular shaft inside the rotating shaft 6. When hollow tube 4 rotates downward, it can push the first sealing plate 44 downward. The lithium carbonate in the screen frame 3 is poured out to the outside along with hollow tube 4. When hollow tube 4 and screen frame 3 rotate downward, screen frame 3 can push fine screen plate 30 to rotate as well. When hollow tube 4 and first sealing plate 44 move downward, gear 40 meshes with rack 42. Gear 40 drives cam 41 to rotate through rotating rod 39. The rotation of cam 41 can simultaneously strike hollow tube 4 and fine screen plate 30, which can make the lithium carbonate on screen frame 3 and fine screen plate 30 slide to one side, accelerate the dumping of lithium carbonate, and facilitate the washing of the next batch of lithium carbonate in the washing tank 1. The collecting plate 33 can collect the lithium carbonate on fine screen plate 30.

[0077] However, as is well known to those skilled in the art, the working principles and wiring methods of cylinder 9, drive motor 7 and heater 38 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0078] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A washing apparatus for preparing lithium carbonate, characterized in that, include: A washing tank, the top of which is provided with a top cover, and a sieve frame is provided inside the washing tank. Heaters are fixedly connected to the inner walls of the opposite sides of the washing tank. The drive structure, located on one side of the washing tank, is used to drive the screen frame to rotate, and to wash and spin-dry the lithium carbonate inside the screen frame. The feeding structure is located inside the sieve frame and is used to inject lithium carbonate into the sieve frame; The discharge structure is located on one side of the washing tank to quickly discharge lithium carbonate from the screen frame; The driving structure includes a drive motor fixedly connected to one side of the washing tank. A rotating shaft rotatably passes through one side of the washing tank and is fixedly connected to the output shaft of the drive motor. A fixed roller is fixedly connected to one end of the screen frame, and one end of the fixed roller extends into the rotating shaft and is rotatably connected to the rotating shaft via a round shaft. A through hole is provided on one side of the washing tank. A hollow tube rotatably passes through the other end of the screen frame, and one end of the hollow tube passes through the through hole. A fixed block is fixedly connected to one side of the washing tank. A cylinder is fixedly connected to the bottom of the fixed block. A ring is fitted on the outer wall of the hollow tube. The ring is connected to the output shaft of the cylinder via a pull rope. The discharge structure includes a tension spring fixedly connected to one side of the washing tank. A baffle is slidably fitted on the outer wall of the fixed block, and the side of the baffle near the washing tank is fixedly connected to the other end of the tension spring. A first limiter is provided on one side of the baffle to limit its movement. Two limiting blocks are provided, with the second limiting block fixedly connected to the top of the fixed block. The bottom of the baffle is provided with an inclined surface. The side of the baffle near the washing tank is provided with a circular groove that engages with the hollow tube. A sealing sheet for sealing the hollow tube is fixedly connected to the inner wall of one side of the circular groove. A first protrusion and a second protrusion are fixedly connected to the inner wall of one side of the washing tank. Multiple second springs are fixedly connected to the top of the first protrusion. A first sealing plate for sealing the through hole is slidably connected to the inner wall of one side of the washing tank, and the bottom of the first sealing plate is fixedly connected to the top of the second spring. Multiple sliding rods are fixedly connected to the bottom of the second protrusion. The second sealing plate is slidably sleeved on the outer wall of the sliding rod. The second sealing plate is slidably connected to one side of the washing tank. A first spring fixedly connected to the top of the second sealing plate is sleeved on the outer wall of the sliding rod, and the top of the first spring is fixedly connected to the bottom of the second protrusion.

2. The lithium carbonate preparation and washing apparatus according to claim 1, characterized in that, The feeding structure includes a feeding ring fixedly connected to the top of the screen frame. A fixed shaft is fixedly connected inside the feeding ring. Two sector plates for closing the feeding ring are rotatably connected to the outer wall of the fixed shaft. Two first torsion springs are sleeved on the outer wall of the fixed shaft, and the two ends of the first torsion springs are fixedly connected to the two sector plates respectively. A feeding pipe slides through the top cover. Two protruding rods are fixedly connected to the bottom end of the feeding pipe, and the protruding rods cooperate with the sector plates.

3. The lithium carbonate preparation and washing apparatus according to claim 2, characterized in that, A liquid storage pipe is fixedly connected inside the washing tank. Multiple nozzles located above the sieve frame are fixedly connected to the bottom of the liquid storage pipe, and the bottom end of the feed pipe slides through the liquid storage pipe. A rotating shaft located below the sieve frame is fixedly connected inside the washing tank. A fine sieve plate is rotatably sleeved on the outer wall of the rotating shaft. Two second torsion springs are sleeved on the outer wall of the rotating shaft. The ends of the two second torsion springs that are close to each other are fixedly connected to the fine sieve plate, and the ends of the two second torsion springs that are far apart from each other are fixedly connected to one side of the inner wall of the washing tank. A collection plate is fixedly connected to one side of the top of the fine sieve plate.

4. The lithium carbonate preparation and washing apparatus according to claim 3, characterized in that, Each of the washing tanks has multiple vent holes on the side away from each other. Two sliding plates for sealing the vent holes are slidably connected to the inner wall of each side of the washing tank. A float plate is fixedly connected to the bottom of the sliding plate by a vertical rod. Multiple first limiting blocks for limiting the float plate are fixedly connected to the inner wall of each side of the washing tank.

5. The lithium carbonate preparation and washing apparatus according to claim 4, characterized in that, The inner walls of the first and second sealing plates that are close to each other are provided with U-shaped sealing rings, and the inner wall of the top of the through hole is fixedly connected with a sealing gasket to increase the sealing between the top of the hollow tube and the inner wall of the top of the through hole.

6. The lithium carbonate preparation and washing apparatus according to claim 5, characterized in that, A fan located inside the washing tank is fixedly fitted onto the outer wall of the rotating shaft.

7. A lithium carbonate preparation and washing apparatus according to claim 6, characterized in that, A rotating rod is rotatably connected to one side of the first sealing plate. A cam for striking the hollow tube and fine sieve plate is fixedly sleeved on the outer wall of the rotating rod. A gear is fixedly sleeved on the outer wall of the rotating rod. A U-shaped plate is fixedly connected to the inner wall of one side of the washing tank. The bottom of the first sealing plate slides through the U-shaped plate. A rack that meshes with the gear is fixedly connected to the top of the U-shaped plate.

8. The method of using the lithium carbonate preparation washing apparatus according to claim 7, characterized in that, Includes the following steps: S1. Push the feed pipe downwards and insert it into the feed ring. The protruding rod pushes the sector plate to rotate around the fixed axis, opening the feed ring and injecting lithium carbonate into the screen frame through the feed pipe. Then, pull the feed pipe out of the feed ring, and the sector plate closes the feed ring under the torque of the first torsion spring. S2. Start the drive motor to drive the fixed roller, rotating shaft and screen frame to rotate. Spray pure water onto the screen frame through the nozzle to initially rinse the lithium carbonate in the screen frame. As the water is sprayed onto the screen frame, the liquid level of pure water in the washing tank gradually rises. At this time, the liquid level submerges the screen frame. The buoyancy of the float pushes the sliding plate to move up and close the vent hole to prevent pure water from overflowing from the vent hole when cleaning lithium carbonate later. S3. Start the heater. The heater heats the pure water in the washing tank to 95°C. The drive motor drives the screen frame to rotate rapidly through the fixed roller and rotating shaft. This allows the lithium carbonate to rotate rapidly in the pure water, which can improve the cleaning efficiency of the lithium carbonate. In addition, the rotating shaft drives the fan to rotate rapidly. The fan creates a water flow in the washing tank, and the water flows towards the center of the screen frame, which can wash the lithium carbonate thoroughly and without dead angles. Then, the washing water is discharged through the drain outlet and washed again through the spray nozzle. Repeat the operation to wash the lithium carbonate 3-5 times. S4. After washing, drain the pure water. Under the action of gravity, the sliding plate releases the seal on the vent. Start the drive motor, which drives the screen frame to rotate at high speed. The centrifugal force is used to spin off the water stains on the surface of the lithium carbonate. At the same time, start the heater to heat the temperature inside the washing tank, further drying the lithium carbonate. When the drive motor drives the screen frame to rotate at high speed, the fan also rotates. The rotation of the fan can drive the airflow in the washing tank. The airflow blows towards the center of the screen frame, which can increase the contact area between the lithium carbonate and the hot air, accelerating the drying of the lithium carbonate. During the process of hot air flow, water vapor can be discharged to the outside through the vent. During the washing and drying process of lithium carbonate while the screen frame is rotating, small particles of lithium carbonate in the screen frame fall onto the fine screen plate. The fine screen plate collects the small particles of lithium carbonate, preventing them from flowing out with the pure water. S5. Start the cylinder. The output shaft of the cylinder pushes the ring and hollow tube downward. The hollow tube, screen frame, and fixed roller rotate around the inner shaft of the rotating shaft. When the hollow tube rotates downward, it can push the first sealing plate downward. The lithium carbonate in the screen frame is poured out to the outside along with the hollow tube. When the hollow tube and screen frame rotate downward, the screen frame can push the fine screen plate to rotate as well. When the hollow tube and the first sealing plate move downward, the gear and rack mesh. The gear drives the cam to rotate through the rotating rod. The rotation of the cam can simultaneously strike the hollow tube and the fine screen plate, which can make the lithium carbonate on the screen frame and the fine screen plate slide to one side, accelerate the dumping of lithium carbonate, and facilitate the washing of the next batch of lithium carbonate in the washing tank. The collection plate can collect the lithium carbonate on the fine screen plate.

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