Lithium carbonate crystallization precipitation device

Abstract

The invention belongs to the technical field of separation, and discloses a lithium carbonate crystallization separation device which comprises a separation bin assembly, a liquid inlet cylinder assembly is arranged at a liquid inlet of the separation bin assembly, and a crystallization separation cylinder assembly is arranged at a liquid outlet of the separation bin assembly. The liquid inlet cylinder assembly forms a self-driven and proportioning type liquid inlet structure at the liquid inlet of the precipitation bin assembly, in the liquid discharging process, the crystallization separation cylinder assembly forms a coaxial reverse liquid throwing separation and self-scraping crystal discharging structure at the liquid outlet of the precipitation bin assembly, and reaction precipitation of lithium carbonate is accelerated through stretching and retracting of an air cylinder. The liquid outlet is located in the coaxial reverse rotation process, on one hand, throwing-out and separation precipitation of liquid discharged from the precipitation bin are achieved, and on the other hand, discharging of lithium carbonate crystallization precipitation materials is achieved.

Description

Technical Field

[0001] This invention belongs to the field of separation technology, specifically relating to a lithium carbonate crystallization precipitation device. Background Technology

[0002] Lithium carbonate can be used to produce various lithium compounds, metallic lithium and its isotopes, as well as to prepare catalysts for chemical reactions. It also has applications in the semiconductor, ceramics, television, pharmaceutical and nuclear energy industries.

[0003] The existing technology has the following problems: Lithium carbonate crystallization is a chemical reaction process, which mainly refers to adding soda ash solution to a pretreated lithium-rich solution to precipitate lithium carbonate, and then separating the lithium carbonate crystals by separation methods, i.e. lithium carbonate crystallization precipitation. However, the existing lithium carbonate crystallization precipitation device does not have continuity in the liquid inlet, liquid outlet and lithium carbonate crystallization precipitation, resulting in low lithium carbonate crystallization precipitation efficiency. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a lithium carbonate crystallization precipitation apparatus, which features highly efficient precipitation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lithium carbonate crystallization precipitation device, comprising a precipitation chamber assembly, an inlet cylinder assembly at the inlet of the precipitation chamber assembly, and a crystallization separation cylinder assembly at the outlet of the precipitation chamber assembly. The precipitation chamber assembly forms a push-pull type liquid extraction and discharge structure inside. During the liquid extraction process, the inlet cylinder assembly forms a self-driven and proportioning liquid extraction structure at the inlet of the precipitation chamber assembly. During the liquid discharge process, the crystallization separation cylinder assembly forms a coaxial reverse-rotation type liquid separation and self-scraping crystallization structure at the outlet of the precipitation chamber assembly.

[0006] In a preferred embodiment of a lithium carbonate crystallization precipitation device, the precipitation chamber assembly includes a precipitation chamber, which is rotatably mounted on a U-shaped frame via a shaft. A cylinder is hinged between the precipitation chamber and the bottom of the U-shaped frame. A drive motor is fixedly mounted on one end of the precipitation chamber via an arm. A linkage arm is rotatably mounted on the output shaft of the drive motor via a crank arm. A piston is rotatably mounted on one end of the linkage arm. An inlet and an outlet, and a motor chamber are respectively provided on one side and the end of the other end of the precipitation chamber. A servo motor is installed inside the motor chamber, and a bevel drive gear is installed on the output shaft of the servo motor. The crystallization separation cylinder assembly includes a liquid infusion tube. A crystallization separation inner cylinder, a first bevel gear, and a first one-way valve are fixedly installed at both ends of the liquid infusion tube. The liquid infusion tube is rotatably mounted on the crystallization separation outer screen cylinder via bearings. An inner disc is fixedly installed inside the crystallization separation inner cylinder. Multiple liquid outlet grooves are arranged around one end of the crystallization separation inner cylinder. Multiple spiral plates are fixedly installed on the outer wall of the crystallization separation inner cylinder. The crystallization separation outer screen cylinder is sleeved outside the spiral plates. A second bevel gear is fixedly installed on the outer wall of one end of the crystallization separation outer screen cylinder. The liquid inlet assembly includes an L-shaped alkali liquid inlet pipe and a Z-shaped lithium-rich liquid inlet pipe, which are connected. Both the L-shaped alkali liquid inlet pipe and the Z-shaped lithium-rich liquid inlet pipe are equipped with a second one-way valve. The L-shaped alkali liquid inlet pipe is equipped with a ball cylinder, and the Z-shaped lithium-rich liquid inlet pipe is equipped with a straight cylinder. The straight cylinder has fins that are rotatably mounted inside via a support shaft and a bearing seat. The ball cylinder has a liquid-collecting ball head that is rotatably mounted inside via a support shaft and a bearing seat. The liquid-collecting ball head has multiple liquid-collecting grooves.

[0007] In a preferred embodiment of a lithium carbonate crystallization precipitation device, the two ends of the linkage arm are rotatably mounted on the crank arm and the piston. Through the rotation of the crank arm, the piston performs liquid extraction and outward movement and liquid discharge and inward pushing actions within the precipitation chamber. Through the extension and retraction of the cylinder, the precipitation chamber forms a swaying structure of mixed liquid on the U-shaped frame.

[0008] In a preferred embodiment of a lithium carbonate crystallization precipitation device, one end of the Z-shaped lithium-rich liquid inlet pipe is fixedly installed at the inlet, and the other end of the Z-shaped lithium-rich liquid inlet pipe is connected to an external lithium-rich solution through a pipe. One end of the L-shaped alkaline solution inlet pipe is connected to an external soda ash solution through a pipe.

[0009] In a preferred embodiment of a lithium carbonate crystallization precipitation device, the liquid-collecting ball head is rotatably disposed inside a ball cylinder. As the liquid-collecting ball head rotates inside the ball cylinder, it forms a quantitative liquid-collecting structure for the alkaline solution through the liquid-collecting tank during the rotation process.

[0010] In a preferred embodiment of a lithium carbonate crystallization precipitation device, one end of the infusion pipe is rotatably mounted at the outlet of the precipitation chamber via a bearing, and the solution in the precipitation chamber is crystallized and separated into the inner cylinder through the infusion pipe.

[0011] In a preferred embodiment of a lithium carbonate crystallization precipitation apparatus, one side of the conical drive gear meshes with a second conical gear, and the other side of the conical drive gear meshes with a first conical gear.

[0012] In a preferred embodiment of a lithium carbonate crystallization precipitation device, a spiral plate on the outer wall of the crystallization separation inner cylinder is rotatably disposed inside the crystallization separation outer sieve cylinder, and a spiral flow channel for the solution is formed between the outer wall of the crystallization separation inner cylinder, the spiral plate, and the inner wall of the crystallization separation outer sieve cylinder.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: During the liquid extraction process, the liquid inlet cylinder assembly forms a self-driven and proportioning liquid inlet structure at the liquid inlet of the precipitation chamber assembly; during the liquid discharge process, the crystallization separation cylinder assembly forms a coaxial reverse-flowing liquid separation and self-scraping crystal structure at the liquid outlet of the precipitation chamber assembly; one end of the Z-shaped lithium-rich liquid inlet pipe is connected to an external lithium-rich solution through a pipe, and one end of the L-shaped alkaline liquid inlet pipe is connected to an external soda ash solution through a pipe; during lithium carbonate crystallization, the drive motor drives the piston to... When the external force is applied, a negative pressure chamber structure is formed inside the precipitation chamber, creating a liquid extraction structure. At this point, both the external lithium-rich solution and the external soda ash solution are simultaneously drawn into the precipitation chamber through the inlet cylinder assembly. During this process, the extension and retraction of the cylinder causes the precipitation chamber to sway on the U-shaped frame. The lithium-rich solution and the soda ash solution react within the precipitation chamber, resulting in the crystallization and precipitation of lithium carbonate. The swaying of the precipitation chamber by the cylinder accelerates the reaction and precipitation of lithium carbonate. When the lithium-rich solution enters the precipitation chamber through the Z-shaped lithium-rich liquid inlet pipe, this... The fins drive the support shaft to rotate, causing the liquid-collecting ball to rotate inside the cylinder. During this rotation, the alkaline solution is quantitatively collected through the collection tank. This method achieves synchronous quantitative injection of the alkaline solution while the lithium-rich solution is being introduced, i.e., proportioning injection. The servo motor meshes with the second and first bevel gears on both sides, with the first and second bevel gears facing each other. When the bevel drive gears rotate, the outer sieve cylinder and the inner cylinder of the crystallization separation form a coaxial, reverse-rotating structure, i.e., crystallization... The inner separation cylinder rotates inside the outer crystallization separation cylinder, and the inner and outer crystallization separation cylinders rotate in opposite directions. During the coaxial reversal process, the spiral plate forms a scraping structure on the inner wall of the outer crystallization separation cylinder, which scrapes off the lithium carbonate crystals on the inner wall of the outer crystallization separation cylinder. Combined with the spiral guide channel formed between the outer wall of the inner crystallization separation cylinder, the spiral plate, and the inner wall of the outer crystallization separation cylinder, the coaxial reversal process achieves the discharge and separation of the liquid from the precipitation chamber, and the discharge of the lithium carbonate crystal precipitation material. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the invention from another angle; Figure 3 This is an exploded view of the present invention; Figure 4 This is a perspective view of the precipitate chamber assembly of the present invention; Figure 5 This is a cross-sectional view of the precipitate chamber assembly of the present invention; Figure 6 This is a perspective view of the crystallization separation cylinder assembly of the present invention; Figure 7This is an exploded view of the crystallization separation cylinder assembly of the present invention; Figure 8 This is a perspective view of the liquid inlet cylinder assembly of the present invention; Figure 9 This is an exploded view of the liquid inlet cylinder assembly of the present invention; In the diagram: 100, Precipitation chamber assembly; 101, Precipitation chamber; 102, Shaft; 103, Boom; 104, Drive motor; 105, Crank arm; 106, Linkage arm; 107, U-shaped frame; 108, Piston; 109, Cylinder; 110, Liquid inlet; 111, Liquid outlet; 112, Conical drive gear; 113, Servo motor; 114, Motor chamber; 200, Crystallization separation cylinder assembly; 201, Infusion pipe; 202, Liquid outlet channel; 203 204. Inner disc; 205. Crystallization separation inner cylinder; 206. Spiral plate; 207. First one-way valve; 208. First bevel gear; 209. Second bevel gear; 200. Crystallization separation outer sieve cylinder; 301. Liquid inlet cylinder assembly; 302. L-shaped alkali liquid inlet pipe; 303. Z-shaped lithium-rich liquid inlet pipe; 304. Straight cylinder; 305. Second one-way valve; 306. Fin; 307. Support shaft; 308. Liquid collection ball head; 309. Liquid collection tank; 300. Ball cylinder. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-9 As shown, the present invention provides a lithium carbonate crystallization precipitation device, including a precipitation chamber assembly 100, an inlet cylinder assembly 300 at the inlet of the precipitation chamber assembly 100, and a crystallization separation cylinder assembly 200 at the outlet of the precipitation chamber assembly 100. The precipitation chamber assembly 100 forms a push-pull type liquid extraction and discharge structure inside. During the liquid extraction process, the inlet cylinder assembly 300 forms a self-driven and proportioning liquid extraction structure at the inlet of the precipitation chamber assembly 100. During the liquid discharge process, the crystallization separation cylinder assembly 200 forms a coaxial reverse-rotation type liquid separation and self-scraping crystallization structure at the outlet of the precipitation chamber assembly 100.

[0017] In a preferred embodiment, please refer to Figure 4 and Figure 5The precipitation chamber assembly 100 includes a precipitation chamber 101, which is rotatably mounted on a U-shaped frame 107 via a shaft 102. A cylinder 109 is hinged between the bottom of the precipitation chamber 101 and the U-shaped frame 107. A drive motor 104 is fixedly mounted on one end of the precipitation chamber 101 via an arm 103. A linkage arm 106 is rotatably mounted on the output shaft of the drive motor 104 via a crank arm 105. A piston 108 is rotatably mounted on one end of the linkage arm 106. An inlet 110 and an outlet 111, and a motor chamber 114 are respectively provided on one side and at the other end of the precipitation chamber 101. A servo motor 1 is installed inside the motor chamber 114. 13. A bevel drive gear 112 is provided on the output shaft of the servo motor 113. The two ends of the linkage arm 106 are rotatably mounted on the crank arm 105 and the piston 108. Through the rotation of the crank arm 105, the piston 108 performs the action of pumping outward and discharging inward in the precipitation chamber 101. Through the extension and retraction of the cylinder 109, the precipitation chamber 101 forms a swaying structure of mixed liquid on the U-shaped frame 107. One end of the Z-type lithium-rich liquid inlet pipe 302 is fixedly installed at the inlet 110. The other end of the Z-type lithium-rich liquid inlet pipe 302 is connected to the external lithium-rich solution through a pipe. One end of the L-type alkaline solution inlet pipe 301 is connected to the external soda ash solution through a pipe.

[0018] In a preferred embodiment, please refer to Figure 6 and Figure 7 The crystallization separation cylinder assembly 200 includes a delivery pipe 201. A crystallization separation inner cylinder 204, a first bevel gear 207, and a first one-way valve 206 are fixedly installed at both ends of the delivery pipe 201, respectively. The delivery pipe 201 is rotatably mounted on the crystallization separation outer screen cylinder 209 via bearings. An inner disc 203 is fixedly installed inside the crystallization separation inner cylinder 204, and multiple outlet grooves 202 are circumferentially arranged at one end of the inner cylinder 204. Multiple spiral plates 205 are fixedly installed on the outer wall of the inner cylinder 204. The crystallization separation outer screen cylinder 209 is sleeved outside the spiral plates 205, and a first one-way valve 206 is fixedly installed on the outer wall of one end of the outer screen cylinder 209. The second bevel gear 208 and the infusion pipe 201 are rotatably mounted at the outlet 111 on the precipitation chamber 101 via a bearing. The solution in the precipitation chamber 101 is crystallized and separated into the inner cylinder 204 through the infusion pipe 201. One side of the bevel drive gear 112 meshes with the second bevel gear 208, and the other side of the bevel drive gear 112 meshes with the first bevel gear 207. The spiral plate 205 on the outer wall of the crystallization separation inner cylinder 204 is rotatably mounted inside the crystallization separation outer sieve cylinder 209. A spiral guide channel for the solution is formed between the outer wall of the crystallization separation inner cylinder 204, the spiral plate 205, and the inner wall of the crystallization separation outer sieve cylinder 209.

[0019] In a preferred embodiment, please refer to Figure 8 and Figure 9The inlet cylinder assembly 300 includes an L-shaped alkali inlet pipe 301 and a Z-shaped lithium-rich liquid inlet pipe 302. The L-shaped alkali inlet pipe 301 and the Z-shaped lithium-rich liquid inlet pipe 302 are connected, and both the L-shaped alkali inlet pipe 301 and the Z-shaped lithium-rich liquid inlet pipe 302 are equipped with a second one-way valve 304. A ball cylinder 309 is provided on the L-shaped alkali inlet pipe 301, and a straight cylinder 303 is provided on the Z-shaped lithium-rich liquid inlet pipe 302. The inside of the straight cylinder 303 is... The support shaft 306 and bearing seat are rotatably equipped with fins 305. Inside the ball cylinder 309, a liquid-collecting ball head 307 is rotatably equipped via the support shaft 306 and bearing seat. The liquid-collecting ball head 307 is provided with multiple liquid-collecting grooves 308. The liquid-collecting ball head 307 is rotatably equipped inside the ball cylinder 309. As the liquid-collecting ball head 307 rotates inside the ball cylinder 309, during the rotation process, the liquid-collecting ball head 307 forms a quantitative liquid-collecting structure for the alkaline solution through the liquid-collecting grooves 308.

[0020] In summary, during use, one end of the Z-type lithium-rich liquid inlet pipe 302 is connected to the external lithium-rich solution through a pipe, and one end of the L-type alkaline solution inlet pipe 301 is connected to the external soda ash solution through a pipe. When lithium carbonate crystallizes and precipitates, the drive motor 104 pulls the piston 108 outward through the crank arm 105 and the linkage arm 106. At this time, a negative pressure chamber structure is formed inside the precipitation chamber 101, and a liquid extraction structure is formed inside the precipitation chamber 101. That is, the external lithium-rich solution and the external soda ash solution are simultaneously drawn into the precipitation chamber 101 through the inlet cylinder assembly 300. During this process, the extension and retraction of the cylinder 109 causes the precipitation chamber 101 to shake on the U-shaped frame 107. At this time, the lithium-rich solution and the alkaline solution react in the precipitation chamber 101, that is, the lithium carbonate crystallizes and precipitates. The shaking of the precipitation chamber 101 by the cylinder 109 accelerates the reaction and precipitation of lithium carbonate.

[0021] Based on the above, the external lithium-rich solution and the external soda ash solution are simultaneously drawn into the precipitation chamber 101 through the inlet cylinder assembly 300. During this process, when the lithium-rich solution enters the precipitation chamber 101 through the Z-shaped lithium-rich solution inlet pipe 302, the fins 305 drive the support rod 306 to rotate. At this time, the liquid-collecting ball head 307 rotates inside the ball cylinder 309. During the rotation of the liquid-collecting ball head 307, the soda ash solution is quantitatively collected through the liquid-collecting tank 308. In this way, the synchronous quantitative injection of the soda ash solution is achieved when the lithium-rich solution is injected, i.e., proportional injection. At the same time, when the lithium-rich solution injection speed in the Z-shaped lithium-rich solution inlet pipe 302 increases, the rotation speed of the support rod 306 increases, the rotation speed of the liquid-collecting ball head 307 increases synchronously, and the quantitative injection speed of the soda ash solution also increases synchronously, realizing adaptive and proportional injection.

[0022] Based on the above, after the solution in the precipitation chamber 101 has completed its reaction, the drive motor 104 drives the piston 108 to move into the precipitation chamber 101 through the crank arm 105 and the linkage arm 106. At this time, the inward movement of the piston 108 causes the solution in the precipitation chamber 101 to be discharged into the crystallization separation cylinder assembly 200 through the liquid outlet 111. At this time, the servo motor 113 is started. Since the two sides of the servo motor 113 are respectively engaged with the second bevel gear 208 and the first bevel gear 207, and the first bevel gear 207 and the second bevel gear 208 are opposite to each other, when the bevel drive gear 112 rotates, the crystallization separation outer sieve cylinder 209 and the crystallization separation inner cylinder 204 form a coaxial and reverse structure, that is, the crystallization separation inner cylinder 204 rotates inside the crystallization separation outer sieve cylinder 209, and the crystallization separation inner cylinder 204 and the crystallization separation outer sieve cylinder 209 rotate in opposite directions.

[0023] Based on the above, when the outer sieve cylinder 209 and the inner sieve cylinder 204 of the crystallization separation form a coaxial reverse structure, the reaction solution discharged from the precipitation chamber 101 enters the inner sieve cylinder 204 of the crystallization separation. The inner sieve cylinder 204 is then ejected through the liquid outlet channel 202. At this time, a spiral flow channel for the solution is formed between the outer wall of the inner sieve cylinder 204, the spiral plate 205, and the inner wall of the outer sieve cylinder 209 of the crystallization separation. The solution is ejected into this spiral flow channel, and then, through the reverse rotation of the outer sieve cylinder 209 of the crystallization separation, the separation and precipitation of lithium carbonate crystals is achieved. That is, the solution is ejected into the spiral flow channel through the inner sieve cylinder 204 of the crystallization separation, and then crystallized. When the outer screen cylinder 209 is synchronously reversed for separation and precipitation, and the outer screen cylinder 209 and the inner screen cylinder 204 of the crystallization separation form a coaxial reverse structure, during the coaxial reverse process, the spiral plate 205 forms a scraping structure on the inner wall of the outer screen cylinder 209, that is, scraping off the lithium carbonate crystals on the inner wall of the outer screen cylinder 209. With the spiral guide channel formed between the outer wall of the inner screen cylinder 204, the spiral plate 205 and the inner wall of the outer screen cylinder 209, during the coaxial reverse process, on the one hand, the liquid discharged from the precipitation chamber 101 is thrown out and separated for precipitation, and on the other hand, the lithium carbonate crystal precipitation material is discharged.

[0024] In another embodiment of the present invention, the motor chamber 114 is provided with a structure for heat dissipation of the servo motor 113. The heat dissipation structure is a conventional technology and will not be described in detail.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium carbonate crystallization precipitation device, comprising a precipitation chamber assembly (100), characterized in that: The liquid inlet of the precipitation bin assembly (100) is provided with a liquid inlet cylinder assembly (300), and the liquid outlet of the precipitation bin assembly (100) is provided with a crystallization separation cylinder assembly (200); a push-pull type liquid pumping and drainage structure is formed inside the precipitation bin assembly (100); during the liquid pumping process, the liquid inlet cylinder assembly (300) forms a self-driven and proportioning liquid inlet structure at the liquid inlet of the precipitation bin assembly (100); during the liquid drainage process, the crystallization separation cylinder assembly (200) forms a coaxial reverse liquid separation and self-scraping crystal structure at the liquid outlet of the precipitation bin assembly (100); The precipitation bin assembly (100) comprises a precipitation bin (101), wherein the precipitation bin (101) is rotatably arranged on a U-shaped frame (107) via a shaft (102), a cylinder (109) is hingedly arranged between the precipitation bin (101) and the bottom of the U-shaped frame (107), a driving motor (104) is fixedly arranged at one end of the precipitation bin (101) via an arm frame (103), a linkage arm (106) is rotatably arranged on the output shaft of the driving motor (104) via a crank arm (105), a piston (108) is rotatably arranged at one end of the linkage arm (106), a liquid inlet (110) and a liquid outlet (111) and a motor chamber (114) are respectively arranged on one side and the end of the other end of the precipitation bin (101), a servo motor (113) is arranged inside the motor chamber (114), and a conical driving gear (112) is arranged on the output shaft of the servo motor (113); The crystallization separation cylinder assembly (200) comprises a liquid infusion tube (201), wherein a crystallization separation inner cylinder (204), a first bevel gear (207), and a first one-way valve (206) are fixedly disposed at both ends of the liquid infusion tube (201), and the liquid infusion tube (201) is rotatably disposed on a crystallization separation outer sieve cylinder (209) via a bearing, an inner disk (203) is fixedly disposed inside the crystallization separation inner cylinder (204), and a plurality of liquid outlet grooves (202) are arranged around one end of the crystallization separation inner cylinder (204), a plurality of spiral plates (205) are fixedly disposed on the outer wall of the crystallization separation inner cylinder (204), the crystallization separation outer sieve cylinder (209) is sleeved outside the spiral plates (205), and a second bevel gear (208) is fixedly disposed on the outer wall of one end of the crystallization separation outer sieve cylinder (209); The liquid inlet cylinder assembly (300) comprises an L-shaped alkali liquid inlet pipe (301) and a Z-shaped lithium-rich liquid inlet pipe (302); the L-shaped alkali liquid inlet pipe (301) and the Z-shaped lithium-rich liquid inlet pipe (302) are connected, and the L-shaped alkali liquid inlet pipe (301) and the Z-shaped lithium-rich liquid inlet pipe (302) are both provided with a second one-way valve (304); the L-shaped alkali liquid inlet pipe (301) is provided with a ball cylinder (309); the Z-shaped lithium-rich liquid inlet pipe (302) is provided with a straight cylinder (303); a fin (305) is rotatably provided inside the straight cylinder (303) via a support shaft (306) and a bearing seat; a liquid collection ball head (307) is rotatably provided inside the ball cylinder (309) via a support shaft (306) and a bearing seat; and a plurality of liquid collection slots (308) are provided on the liquid collection ball head (307).

2. A lithium carbonate crystallization and precipitation device according to claim 1, characterized in that: The two ends of the linkage arm (106) are rotatably arranged on the crank arm (105) and the piston (108). Through the rotation of the crank arm (105), the piston (108) performs the action of pumping liquid outward and discharging liquid inward in the precipitation chamber (101). Through the extension and retraction of the cylinder (109), the precipitation chamber (101) forms a mixed liquid shaking structure on the U-shaped frame (107).

3. A lithium carbonate crystallization device according to claim 1, characterized in that: One end of the Z-shaped lithium-rich solution inlet pipe (302) is fixedly arranged at the liquid inlet (110), and the other end of the Z-shaped lithium-rich solution inlet pipe (302) is connected to an external lithium-rich solution through a pipeline, and one end of the L-shaped alkali solution inlet pipe (301) is connected to an external soda ash solution through a pipeline.

4. A lithium carbonate crystallization and precipitation device according to claim 1, characterized in that: The liquid collection ball head (307) is rotatably disposed in the ball barrel (309); as the liquid collection ball head (307) rotates in the ball barrel (309), during the rotation process, the liquid collection ball head (307) forms a quantitative liquid collection structure for the alkali solution through the liquid collection groove (308).

5. A lithium carbonate crystallization and precipitation device according to claim 1, characterized in that: One end of the liquid infusion tube (201) is rotatably disposed at a liquid outlet (111) on the precipitation chamber (101) via a bearing, and the solution in the precipitation chamber (101) is crystallized and separated in the inner cylinder (204) via the liquid infusion tube (201).

6. A lithium carbonate crystallization and precipitation device according to claim 1, characterized in that: One side of the bevel drive gear (112) is meshed with the second bevel gear (208), and the other side of the bevel drive gear (112) is meshed with the first bevel gear (207).

7. A lithium carbonate crystallization and precipitation device according to claim 1, characterized in that: The spiral plate (205) on the outer wall of the crystallization separation inner cylinder (204) is rotatably arranged inside the crystallization separation outer sieve cylinder (209), and a spiral flow guide channel for the solution is formed between the outer wall of the crystallization separation inner cylinder (204), the spiral plate (205) and the inner wall of the crystallization separation outer sieve cylinder (209).

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