A high-purity lithium carbonate preparation and production washing device

Abstract

The application relates to the technical field of lithium carbonate washing devices, and discloses a washing device for high-purity lithium carbonate preparation and production. The upper grinding disc and the lower grinding disc are connected in a matched mode, so that a relatively closed rolling groove is formed, the upper grinding disc drives the rolling shaft to rotate and continuously rubs the bottom of the inner wall of the rolling groove, the rolling shaft continuously rotates in the rotating groove, when small-volume lithium carbonate polymers enter the rolling groove through a plurality of strip-shaped feeding ports arranged on the top of the upper grinding disc, the continuously rotating rolling shaft continuously rolls the lithium carbonate polymers to crush the lithium carbonate polymers, so that the water-soluble impurities doped in the deep layer of the lithium carbonate polymers can be quickly exposed and dissolved in water, deep-layer washing of the lithium carbonate slurry is completed, and the problem that the water-soluble impurities doped in the deep layer of the lithium carbonate polymers cannot be quickly removed in the washing process of the traditional lithium carbonate washing device is solved.

Description

Technical Field

[0001] This application relates to the technical field of lithium carbonate washing equipment, and in particular to a washing equipment for the preparation and production of high-purity lithium carbonate. Background Technology

[0002] Lithium carbonate is a colorless monoclinic crystal or white powder that can be used to make ceramics, catalysts, and raw materials for lithium-ion batteries.

[0003] Existing lithium carbonate cleaning devices typically mix the lithium carbonate mixture filter cake that has undergone filtration with deionized water to form a lithium carbonate slurry. A rotary stirring mechanism is used for stirring and cleaning, along with an upper guide pipe, to remove impurities with low density that easily float on the liquid surface. However, due to the tendency of lithium carbonate to agglomerate and adhere, some water-soluble impurities are encapsulated and adhered to the material, making them difficult to remove deeply. Simply stirring the lithium carbonate slurry for washing cannot expose the water-soluble impurities encapsulated in the material, resulting in a low purity of the final lithium carbonate product. Summary of the Invention

[0004] This application proposes a washing device for the preparation and production of high-purity lithium carbonate. It has the advantage of simultaneously stirring the lithium carbonate slurry and crushing the lithium carbonate polymer, which can quickly expose and dissolve water-soluble impurities doped deep in the lithium carbonate polymer, thus completing the deep washing of the lithium carbonate slurry. This solves the problem that the existing lithium carbonate cleaning devices are too simple in their cleaning methods, and cannot expose some water-soluble impurities encapsulated in the material by simply relying on rotation and stirring, resulting in low purity of the prepared lithium carbonate.

[0005] To achieve the above objectives, this application adopts the following technical solution: a washing device for the preparation and production of high-purity lithium carbonate, comprising a washing tank, a plurality of support legs fixedly connected to the bottom of the washing tank, a top cover for sealing installed on the top of the washing tank, an exhaust valve and a feed pipe respectively passing through the top cover, a motor, the motor being fixedly installed on the top of the top cover, and a rotating rod being fixedly connected through the top cover to the output shaft, a plurality of stirring rods for stirring lithium carbonate slurry being fixedly installed on the rotating rod, an upper grinding disc, the center of the upper grinding disc being fixedly connected to the bottom end of the rotating rod, a plurality of annularly distributed rotating grooves being opened at the bottom of the upper grinding disc, and a grinding shaft for crushing and pulverizing lithium carbonate polymer being rotatably connected in the rotating grooves, a lower grinding disc, the lower grinding disc being fixedly connected to the bottom of the inner wall of the washing tank, and the lower grinding disc being in close contact with the upper grinding disc, a grinding groove being opened at the top of the lower grinding disc, and a groove for discharging crushed particles being opened on the grinding groove, and a drain hole being opened at the bottom of the inner wall of the washing tank, and a drain pipe for discharging material passing through the bottom end.

[0006] Furthermore, the washing tub has an annular cavity that matches its contour, and an electric heating layer for heating lithium carbonate slurry is embedded in the annular cavity. The upper grinding disc has a heat storage chamber that communicates with multiple rotating slots. The rotating rod has a heat preservation chamber, and a heat-conducting shaft is concentrically arranged in the heat preservation chamber. The bottom end of the heat-conducting shaft passes through the upper grinding disc and is fixedly connected to the heat storage chamber. One end of each of the multiple stirring rods on the rotating rod passes through the heat preservation chamber and is in close contact with the surface of the heat-conducting shaft. The piston in the rotating slot is connected to a piston strip, and the piston strip is located above the rolling shaft. A brush blade that matches the arc contour of the top of the rolling shaft is fixedly connected to the side of the piston strip opposite to the rolling shaft. Multiple springs are fixedly connected between the top of the piston strip and the inner wall of the heat storage chamber.

[0007] Furthermore, the space between the insulation cavity and the rotating rod is filled with insulation cotton, which is made of a material with good thermal conductivity.

[0008] Furthermore, a filter screen for filtering impurities and lithium carbonate particles is embedded in the top of the drain hole, and the filter screen is at the same level as the bottom of the inner wall of the washing tub. A sealing plug for sealing is embedded in the bottom of the drain hole, and the top of the sealing plug is lower than the bottom of the inner wall of the drain pipe.

[0009] Furthermore, the top of the upper grinding disc is provided with multiple strip-shaped feed ports arranged in a ring array. The top of each strip-shaped feed port is fixedly connected to an intercepting plate that matches its length. The upper half of the intercepting plate is provided with a bend, and the inner wall of the bend is an obtuse angle towards the side of the strip-shaped feed port.

[0010] Furthermore, an intercepting block is fixedly connected to the end of the intercepting plate away from the rotating rod, and the size of the intercepting block is adapted to the size of the end of the strip feed inlet.

[0011] Furthermore, multiple connecting blocks arranged in a ring are fixedly connected to the outer arc-shaped contour of the upper grinding disc.

[0012] Furthermore, the bottom of the connecting block is fixedly fitted with bristles that fit against the bottom of the inner wall of the washing tub.

[0013] Furthermore, a plurality of circularly distributed magnetic blocks are embedded in the bottom of the washing tub, and the positions of the plurality of magnetic blocks correspond to those of the inclined blocks.

[0014] Furthermore, the tilting block is made of magnetic material, and its magnetic poles are the same as those of the magnetic block.

[0015] The beneficial effects of this invention are as follows:

[0016] This application provides a washing device for the preparation and production of high-purity lithium carbonate. A rotating rod drives multiple stirring rods to stir and wash the lithium carbonate slurry, simultaneously rotating an upper grinding disc fixedly connected to it. Due to the close connection between the upper and lower grinding discs, a relatively closed grinding chamber is formed at the grinding trough. As the upper grinding disc drives the grinding shaft to rotate, and the continuous friction with the bottom of the inner wall of the grinding trough causes the grinding shaft to continuously rotate within the rotating trough. When small volumes of lithium carbonate polymer enter this grinding chamber through multiple strip-shaped feed inlets at the top of the upper grinding disc, the continuously rotating grinding shaft continuously crushes the lithium carbonate polymer, pulverizing it. This allows water-soluble impurities deeply embedded in the lithium carbonate polymer to be quickly exposed and dissolved in water, completing a deep-level washing of the lithium carbonate slurry. This solves the problem of traditional lithium carbonate washing devices being unable to quickly remove water-soluble impurities deeply embedded in the lithium carbonate polymer during the washing process, thus improving the purity of the finished lithium carbonate product. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged structural diagram of area A in the middle;

[0021] Figure 4 This is a cross-sectional view of the washing tub and the electric heating layer in this invention;

[0022] Figure 5 This is a cross-sectional view of the upper grinding disc in this invention;

[0023] Figure 6 This is a schematic diagram of the structure of the lower grinding disc in this invention;

[0024] Figure 7 This is a schematic diagram of the structure of the rolling shaft, piston bar, brush plate and spring in this invention;

[0025] Figure 8 This is a schematic diagram of the structure of the filter screen, connecting block, tilting block and brush bristles in this invention.

[0026] In the diagram: 1. Washing tub; 2. Electric heating layer; 3. Motor; 4. Rotating rod; 5. Stirring rod; 6. Upper grinding disc; 601. Rotating groove; 602. Rolling shaft; 603. Strip-shaped feed inlet; 604. Heat storage chamber; 605. Piston strip; 606. Brush; 607. Spring; 608. Insulation chamber; 609. Heat-conducting shaft; 610. Insulation cotton; 7. Lower grinding disc; 701. Rolling groove; 8. Interception plate; 801. Interception block; 9. Drain hole; 901. Filter screen; 902. Sealing plug; 10. Drain pipe; 11. Connecting block; 1101. Inclined block; 1102. Brush bristles; 1103. Magnetic block; 12. Top cover; 1201. Exhaust valve; 1202. Feed pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figures 1-2 As shown, the lithium carbonate slurry to be washed is first poured into the washing tank (1) through the feed pipe (1202) installed on the top cover (12). After the lithium carbonate slurry and water are fed, the motor (3) installed on the top cover (12) is started. The output shaft of the motor (3) through the top cover (12) drives the rotating rod (4) fixedly connected to the output shaft to rotate synchronously, so that multiple stirring rods (5) fixedly installed on the rotating rod (4) continuously rotate and stir in the slurry. During the continuous rotation of the multiple stirring rods (5), on the one hand, the slurry can be stirred evenly, so that some water-soluble impurities wrapped on the surface of the polymer can be dissolved in water more quickly, improving the washing effect of the slurry. On the other hand, during the rotation, the stirring rods (5) will randomly hit and break the large particles of lithium carbonate polymer mixed in the slurry, so that they are transformed into small-volume lithium carbonate polymers, which are convenient for further crushing of these small-volume lithium carbonate polymers. This allows the water-soluble impurities wrapped deep in the lithium carbonate polymer to be completely exposed, fused and dissolved with water, improving the purity of lithium carbonate after washing and enhancing the washing effect.

[0030] like Figures 2-3As shown, when the rotating rod (4) starts to rotate, the upper grinding disc (6) fixedly connected to it will rotate synchronously. Due to the close connection between the upper grinding disc (6) and the lower grinding disc (7), a relatively closed grinding chamber is formed at the grinding groove (701). When the upper grinding disc (6) drives the grinding shaft (602) to rotate and continuously rubs against the bottom of the inner wall of the grinding groove (701), the grinding shaft (602) will continue to rotate in the rotating groove (601). When a small volume of lithium carbonate polymer enters this grinding chamber through multiple strip-shaped feed inlets (603) opened at the top of the upper grinding disc (6), the continuously rotating grinding shaft (602) will continuously crush the lithium carbonate polymer, making it pulverized. During this process, the groove on the grinding groove (701) corresponds to the position of the drain hole (9), so that the crushed material is not dissolved. Small lithium carbonate particles and impurities are thrown out of the grinding tank (701) by the centrifugal force generated during the rotation of the grinding shaft (602) and onto the drain hole (9) for subsequent filtration and collection. At this time, the small lithium carbonate particles leaving the grinding tank (701) will first accumulate in the drain hole (9) during natural sedimentation and filtration, and then be discharged and collected through the drain pipe (10) at the appropriate time, thus completing the deep washing of the lithium carbonate slurry. This solves the problem that traditional lithium carbonate washing devices cannot quickly remove water-soluble impurities deeply doped in lithium carbonate polymers during the washing process. It does not require an additional crushing process, which can increase the purity of lithium carbonate after washing, improve washing efficiency and effect, save washing costs, and increase the production yield of lithium carbonate.

[0031] Example 2

[0032] Based on Example 1, this example makes further improvements. To further increase the yield of high-purity lithium carbonate in the washing process, considering that lithium carbonate is slightly soluble in water and has a higher solubility in cold water compared to hot water, the following improvements are made. For example... Figures 2-8 As shown, an annular cavity adapted to the contour of the washing tank (1) is opened inside, and an electric heating layer (2) is embedded therein. During the washing process of lithium carbonate slurry, the electric heating layer (2) will be activated first to heat the entire lithium carbonate slurry and keep it within a suitable temperature range. Increasing the temperature of the lithium carbonate slurry can reduce the solubility of lithium carbonate and enhance the dissolution rate of other water-soluble impurities in the slurry, achieving a counteracting effect. This helps to improve the yield and purity of lithium carbonate production, reduce the dissolution loss of lithium carbonate during the washing process, and while ensuring improved heat preservation, it can avoid the safety hazards caused by the possible leakage or impact of hot water steam on the slurry, and greatly reduce the extra cost waste caused by the unnecessary processes in filtration and manufacturing of high-temperature steam.

[0033] It is worth noting that the rotating rod (4) is hollow, with a concentrically arranged heat-insulating cavity (608) in the middle. A heat-conducting shaft (609) is set on the vertical line of the axis of the heat-insulating cavity (608). The bottom of the heat-conducting shaft (609) passes through the upper grinding disc (6) and is fixed in the heat storage cavity (604). The ends of the multiple stirring rods (5) near the rotating rod (4) pass through the heat-insulating cavity (608) and extend to be in contact with the surface of the heat-conducting shaft (609). This arrangement, through the large contact surface between the stirring rods (5) and the slurry and the rotational motion, can better transfer heat through the heat-conducting shaft (609). 9) The heat is conducted into the heat storage chamber (604) and the grinding shaft (602) is heated. The heated grinding shaft (602) can crush the lithium carbonate polymer in the relatively closed grinding tank (701) while accelerating the dissolution of water-soluble impurities and reducing the dissolution of lithium carbonate particles. Compared with the traditional method of heating with filtered high-temperature water vapor, the above settings can appropriately raise the temperature of the lithium carbonate polymer in the crushing area as well as the crushed lithium carbonate particles and water-soluble impurities. Based on the change in the solubility of lithium carbonate particles and water-soluble impurities in water temperature, the washing effect of lithium carbonate is improved.

[0034] The piston strip (605) is sealed between its top and the heat storage chamber (604). The internal air pressure increases as heat enters the heat storage chamber (604), pushing the piston strip (605) downwards. At this time, the brush (606) at the bottom of the piston strip (605) gradually comes into contact with the top of the roller (602), scraping away particles adhering to the roller (602) to prevent the accumulation of different materials that could clog and jam the roller (602), affecting its normal rotation. The spring (607) between the top of the piston strip (605) and the heat storage chamber (604) provides elasticity to help the piston strip (605) reset after it stops working. Its tension also prevents excessive air pressure from causing... Excessive pressure on the surface of the brush blade (606) and the rolling shaft (602) affects the rotation of the rolling shaft (602). The above configuration, by rotating the stirring rod (5), introduces heat into the heat storage chamber (604) through the heat insulation chamber (608) and the heat conduction shaft (609). This not only increases the temperature in the rolling groove (701), accelerates the dissolution of water-soluble impurities, and reduces the dissolution of lithium carbonate particles, but also utilizes the principle of expansion when the air pressure in the closed air increases at high temperature. With the help of the piston strip (605) and the brush blade (606), particles accidentally stuck to the surface of the continuously rotating rolling shaft (602) are removed, avoiding blockage of the rolling shaft (602), enhancing the stability of transmission between structures, and ensuring the normal continuous operation of the device.

[0035] It is worth noting that the electric heating layer (2) here heats the lithium carbonate slurry to maintain its temperature between 75℃ and 85℃. The hot steam with a pressure higher than the standard pressure will be discharged through the exhaust valve (1201). Compared with the relatively open structure of traditional washing devices, this device adopts a combination of a relatively sealed washing tank (1) and a top cover (12), which can appropriately reduce heat loss. At the same time, the insulation cotton (610) is filled in the insulation cavity (608), which can also keep the heat conducted in, further reducing heat loss. In particular, through the heat conduction structure of the insulation cavity (608), the heat conduction shaft (609) and the heat storage cavity (604), as well as the relatively closed space formed by the upper grinding disc (6) and the crushing groove (701), the heat in the crushing area is relatively concentrated during the crushing and pulverizing of lithium carbonate polymer. The exchange loss with the outside is low, and there is no need to consider the additional heat loss and specially increase the heating temperature of the device. This can achieve the effect of reducing energy consumption and is more conducive to the production of high-purity lithium carbonate by enterprises.

[0036] Example 3

[0037] Based on Example 1, this example makes further additions, such as... Figures 4-8 As shown, multiple strip-shaped feed inlets (603) on the top of the upper grinding disc (6) are fixedly connected to intercepting plates (8) and intercepting blocks (801). During the rotation of the upper grinding disc (6), the intercepting plates (8) intercept the lithium carbonate polymer that is impacted from the front, while the intercepting blocks (801) intercept the lithium carbonate polymer again at another angle after the intercepting plates (8) have successfully intercepted it. This prevents the lithium carbonate polymer from being thrown out of the intercepting plate (8) range under the centrifugal force of the rotating intercepting plates (8), thereby increasing the interception effect on the lithium carbonate polymer and increasing the probability that the lithium carbonate polymer will be intercepted and enter the strip-shaped feed inlets (603) and the crushing groove (701), thereby improving the crushing and pulverizing effect of the crushing shaft (602) on the lithium carbonate polymer.

[0038] Furthermore, multiple connecting blocks (11) are fixedly connected to the outer arc-shaped contour of the upper grinding disc (6). Each connecting block (11) is connected to an inclined block (1101) with damping rotation. The damping of the inclined block (1101) can be adjusted by tightening the bolts, thereby adjusting the inclination angle of the inclined block (1101) within the connecting block (11). This ensures that the bottom of the inclined block (1101) can always be in close contact with the bottom of the inner wall of the washing tub (1). In this way, as the connecting block (11) rotates with the upper grinding disc (6), the inclined block (1101) can use its inclined angle plane to re-roll up the lithium carbonate polymer deposited at the bottom of the inner wall of the washing tub (1), so that it can re-participate in the washing and crushing process of the lithium carbonate slurry, thereby improving the washing efficiency of lithium carbonate in the lithium carbonate slurry.

[0039] In addition, a filter screen (901) is embedded in the top of the drain hole (9), which can achieve a filtering effect on lithium carbonate and impurities, and improve the purity of the final collected lithium carbonate. At the same time, the sealing plug (902) installed at the bottom of the filter screen (901) can facilitate the subsequent cleaning of the inner wall of the washing tub (1). The setting that the top of the sealing plug (902) is lower than the bottom of the inner wall of the drain pipe (10), and the setting that the inner wall of the drain pipe (10) is inclined towards the drain hole (9) at the outer end, can also facilitate the collection of filtered lithium carbonate particles.

[0040] Furthermore, the bottom of the tilting block (1101) is equipped with bristles (1102) that are attached to the bottom of the inner wall of the washing tub (1). The bristles (1102) can rotate synchronously with the tilting block (1101) and work with the tilting block (1101) to roll up the precipitated lithium carbonate polymer. At the same time, during the rotation of the bristles (1102), they will also brush the filter screen (901) embedded in the top of the drain hole (9), thereby achieving the effect of unclogging the filter screen (901) and preventing the filter screen (901) from becoming clogged during long-term use.

[0041] To further enhance the turbination effect on the precipitate and to remove potential magnetic and metallic impurities from the lithium carbonate slurry, multiple ring-shaped magnetic blocks (1103) are embedded in the bottom of the inner wall of the washing tank (1). The magnetic blocks (1103) correspond to the tilting blocks (1101), and the tilting blocks (1101) are made of magnetic material. The tilting blocks (1101) and magnetic blocks (1103) share the same magnetic poles. Through the magnetism of the tilting blocks (1101) and magnetic blocks (1103), and the rotation of the tilting blocks (1101), the metallic and magnetic impurities deposited around the lower grinding disc (7) can be adsorbed and collected to the maximum extent possible, achieving the effect of removing these impurities and further improving the device's ability to remove impurities. The washing effect is improved, and when necessary, the damping between the magnetic block (1103) and the connecting block (11) is reduced by tightening the bolts, so that it can rotate freely on the connecting block (11). This ensures that whenever the tilting block (1101) rotates to the top of the magnetic block (1103), it will be repelled by the same magnetism on the magnetic block (1103) and jump upward a certain distance. After leaving the range, it will fall again due to gravity. Finally, the tilting block (1101) will fluctuate regularly up and down during the rotation, which further improves the rolling effect of lithium carbonate polymer and increases the interception amount of lithium carbonate polymer at the bottom of the washing tub (1) by the intercepting plate (8) and the intercepting block (801), so that the precipitated lithium carbonate polymer can be uniformly stirred and crushed.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A washing apparatus for the preparation and production of high-purity lithium carbonate, characterized in that, Include: Washing barrel (1), the bottom of washing barrel (1) is fixedly connected with a plurality of supporting legs, the top of washing barrel (1) is provided with a top cover (12) for sealing, and exhaust valve (1201) and feed pipe (1202) are respectively arranged through top cover (12) on top cover (12); Motor (3), the top of top cover (12) is fixedly installed, and the output shaft is fixedly connected with rotating rod (4) penetrating top cover (12), a plurality of stirring rods (5) for stirring lithium carbonate slurry are fixedly installed on rotating rod (4); Upper mill disc (6), the center of upper mill disc (6) is fixedly connected with the bottom end of rotating rod (4), a plurality of annularly distributed rotating grooves (601) are formed in the bottom of upper mill disc (6), and the rotating groove (601) is rotatably connected with the rolling shaft (602) for crushing lithium carbonate polymer; Lower mill disc (7), the bottom of the inner wall of washing barrel (1) is fixedly connected with lower mill disc (7), and lower mill disc (7) is connected with upper mill disc (6), the top of lower mill disc (7) is provided with a rolling groove (701), and the rolling groove (701) is provided with a groove for discharging the crushed particles; Drainage hole (9), the bottom of the inner wall of washing barrel (1) is provided with drainage hole (9), and the bottom is connected with drainage pipe (10) for discharging materials; The washing barrel (1) is provided with an annular cavity matching the contour, and an electric heating layer (2) for heating lithium carbonate slurry is embedded in the annular cavity, a heat storage cavity (604) is formed in the upper mill disc (6) and communicated with a plurality of rotating grooves (601), a heat preservation cavity (608) is formed in the rotating rod (4), and a heat conducting shaft (609) is concentrically arranged in the heat preservation cavity (608), the bottom end of the heat conducting shaft (609) penetrates the upper mill disc (6) and is fixedly connected in the heat storage cavity (604), one end of a plurality of stirring rods (5) on the rotating rod (4) penetrates the heat preservation cavity (608) and is connected with the surface of the heat conducting shaft (609), the piston strip (605) is connected with the piston in the rotating groove (601), and the piston strip (605) is located above the rolling shaft (602), the brush (606) matching the arc contour of the top of the rolling shaft (602) is fixedly connected to one side of the piston strip (605) relative to the rolling shaft (602), and a plurality of springs (607) are fixedly connected between the top of the piston strip (605) and the inner wall of the heat storage cavity (604); A plurality of strip-shaped feed ports (603) are arranged in an annular array on the top of the upper mill disc (6), the top of the strip-shaped feed port (603) is fixedly connected with an intercepting plate (8) matching the length thereof, the upper half of the intercepting plate (8) is provided with an angle, and the inner wall of the angle is an obtuse angle to one side of the strip-shaped feed port (603).

2. The washing device for producing high-purity lithium carbonate according to claim 1, characterized in that, The heat preservation cavity (608) and the rotating rod (4) are filled with heat preservation cotton (610), and the stirring rod (5) is made of a material with good heat conductivity.

3. The washing device for producing high-purity lithium carbonate according to claim 1, characterized in that, The top of the drain hole (9) is embeddedly installed with a filter screen (901) for filtering impurities and lithium carbonate particles, and the filter screen (901) is flush with the bottom of the inner wall of the washing barrel (1), and the bottom of the drain hole (9) is embeddedly installed with a sealing plug (902) for sealing, and the top of the sealing plug (902) is lower than the bottom of the inner wall of the drain pipe (10).

4. The washing device for producing high-purity lithium carbonate according to claim 1, characterized in that, The intercepting plate (8) is fixedly connected with an intercepting block (801) at one end away from the rotating rod (4), and the size of the intercepting block (801) is adapted to the size of the end of the strip-shaped feeding port (603).

5. The washing device for producing high-purity lithium carbonate according to claim 1, characterized in that, A plurality of connecting blocks (11) are fixedly connected on the outer arc-shaped contour of the upper grinding disc (6) in a ring shape.

6. The washing device for producing high-purity lithium carbonate according to claim 5, characterized in that, A plurality of brush hairs (1102) are fixedly installed at the bottom of the connecting block (11) and are in close contact with the bottom of the inner wall of the washing barrel (1).

7. The washing device for producing high-purity lithium carbonate according to claim 6, characterized in that, A plurality of magnetic blocks (1103) are embeddedly installed at the bottom of the washing barrel (1) in a ring shape, and an inclined block (1101) is rotatably connected in the connecting block (11), and the positions of the plurality of magnetic blocks (1103) correspond to the positions of the inclined block (1101).

8. The washing device for producing high-purity lithium carbonate according to claim 7, characterized in that, The inclined block (1101) is made of a magnetic material and has the same magnetic pole as the magnetic block (1103).

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