A lithium carbonate crystallization precipitation device

Abstract

The present invention belongs to the field of separation technology, and discloses a lithium carbonate crystallization precipitation device, comprising a precipitation bin assembly, wherein a liquid inlet cylinder assembly is arranged at the liquid inlet of the precipitation bin assembly, and a crystallization separation cylinder assembly is arranged at the liquid outlet of the precipitation bin assembly. 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 bin assembly, and during the liquid discharge process, the crystallization separation cylinder assembly forms a coaxial reversal liquid throwing separation and self-scraping crystal structure at the liquid outlet of the precipitation bin assembly. The reaction and precipitation of lithium carbonate are accelerated by the extension and contraction of the cylinder. When the lithium-rich solution of the present invention is fed, the synchronous quantitative liquid feeding of the alkaline solution, i.e. the proportioning liquid feeding, is realized. The liquid outlet of the present invention is in the coaxial reversal process, which realizes the throwing out and separation precipitation of the liquid discharged from the precipitation bin on the one hand, and realizes the discharge of the lithium carbonate crystallization precipitation material on the other hand.

Description

Technical Field

[0001] The invention belongs to the field of separation technology, and in particular relates to a lithium carbonate crystallization precipitation device. Background Art

[0002] Lithium carbonate can be used to prepare various lithium compounds, metallic lithium and its isotopes, and is also used to prepare catalysts for chemical reactions. It is also used in semiconductors, ceramics, televisions, medicine and the atomic energy industry.

[0003] The prior art has the following problems: lithium carbonate crystallization is a chemical reaction process, which mainly refers to adding a soda ash solution to a pretreated lithium-rich solution to precipitate lithium carbonate, and then separating the lithium carbonate crystals through a separation method, that is, lithium carbonate crystallization. However, the existing lithium carbonate crystallization device does not have continuity in liquid inlet, liquid outlet and lithium carbonate crystallization, resulting in low lithium carbonate crystallization efficiency. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a lithium carbonate crystallization precipitation device, which has the characteristics of high-efficiency precipitation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium carbonate crystallization precipitation device, comprising a precipitation bin assembly, a liquid inlet cylinder assembly is arranged at the liquid inlet of the precipitation bin assembly, and a crystallization separation cylinder assembly is arranged at the liquid outlet of the precipitation bin assembly, a push-pull type liquid pumping and drainage structure is formed inside the precipitation bin assembly, during the liquid pumping process, the liquid inlet cylinder assembly forms a self-driven and proportional liquid inlet structure at the liquid inlet of the precipitation bin assembly, and during the liquid discharge process, the crystallization separation cylinder assembly forms a coaxial reverse liquid separation and self-scraping crystal structure at the liquid outlet of the precipitation bin assembly.

[0006] In a preferred embodiment of a lithium carbonate crystallization precipitation device, the precipitation bin assembly includes a precipitation bin, the precipitation bin is rotatably arranged on a U-shaped frame through a shaft rod, a cylinder is hingedly arranged between the precipitation bin and the bottom of the U-shaped frame, a driving motor is fixedly arranged at one end of the precipitation bin through an arm frame, a linkage arm is rotatably arranged on the output shaft of the driving motor through a crank arm, a piston is rotatably arranged at one end of the linkage arm, a liquid inlet and a liquid outlet, and a motor chamber are respectively arranged on one side and the end of the other end of the precipitation bin, a servo motor is arranged inside the motor chamber, and a conical driving gear is arranged on the output shaft of the servo motor;

[0007] The crystal separation cylinder assembly includes a liquid infusion tube, and the two ends of the liquid infusion tube are respectively fixedly provided with a crystal separation inner cylinder and a first bevel gear and a first one-way valve, and the liquid infusion tube is rotatably provided on the crystal separation outer sieve cylinder through a bearing, an inner disk is fixedly provided inside the crystal separation inner cylinder, and a plurality of liquid outlet grooves are arranged around one end of the crystal separation inner cylinder, a plurality of spiral plates are fixedly provided on the outer wall of the crystal separation inner cylinder, the crystal separation outer sieve cylinder is sleeved outside the spiral plate, and a second bevel gear is fixedly provided on the outer wall of one end of the crystal separation outer sieve cylinder;

[0008] The liquid inlet cylinder assembly includes an L-type alkali liquid inlet pipe and a Z-type lithium-rich liquid inlet pipe, the L-type alkali liquid inlet pipe and the Z-type lithium-rich liquid inlet pipe are connected, and the L-type alkali liquid inlet pipe and the Z-type lithium-rich liquid inlet pipe are both provided with a second one-way valve, the L-type alkali liquid inlet pipe is provided with a ball cylinder, the Z-type lithium-rich liquid inlet pipe is provided with a straight cylinder, fins are rotatably provided inside the straight cylinder through a support rod and a bearing seat, a liquid collection ball head is rotatably provided inside the ball cylinder through a support rod and a bearing seat, and a plurality of liquid collection grooves are provided on the liquid collection ball head.

[0009] In a preferred embodiment of a lithium carbonate crystallization precipitation device, both ends of the linkage arm are rotatably arranged on a crank arm and a piston. Through the rotation of the crank arm, the piston performs the actions of pumping liquid outward and discharging liquid inward in the precipitation chamber. Through the extension and retraction of the cylinder, the precipitation chamber forms a mixed liquid shaking structure on the U-shaped frame.

[0010] In a preferred embodiment of a lithium carbonate crystallization precipitation device, one end of the Z-type lithium-rich liquid inlet pipe is fixedly arranged at the liquid inlet, the other end of the Z-type lithium-rich liquid inlet pipe is connected to an external lithium-rich solution through a pipeline, and one end of the L-type alkali solution inlet pipe is connected to an external soda ash solution through a pipeline.

[0011] In a preferred embodiment of a lithium carbonate crystallization and precipitation device, the liquid collection ball head is rotatably arranged in a ball barrel. As the liquid collection ball head rotates in the ball barrel, during the rotation process, the liquid collection ball head forms a quantitative liquid collection structure for the alkali solution through the liquid collection tank.

[0012] In a preferred embodiment of a lithium carbonate crystallization precipitation device, one end of the infusion tube is rotatably arranged at the liquid outlet on the precipitation bin through a bearing, and the solution in the precipitation bin is crystallized and separated in the inner cylinder through the infusion tube.

[0013] In a preferred embodiment of the lithium carbonate crystallization and precipitation device, one side of the conical drive gear is meshed with the second conical gear, and the other side of the conical drive gear is meshed with the first conical gear.

[0014] In a preferred embodiment of a lithium carbonate crystallization precipitation device, the spiral plate on the outer wall of the crystallization separation inner cylinder is rotatably arranged inside the crystallization separation outer sieve cylinder, and a spiral guide 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.

[0015] 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 bin assembly; during the liquid discharge process, the crystallization separation cylinder assembly forms a coaxial reverse liquid separation and self-scraping crystal structure at the liquid outlet of the precipitation bin assembly; one end of the Z-type lithium-rich liquid inlet pipe is connected to the external lithium-rich solution through a pipeline; one end of the L-type alkali liquid inlet pipe is connected to the external soda ash solution through a pipeline; when lithium carbonate crystals are precipitated, the driving motor drives the piston to the Pull outward, at this time, a negative pressure bin structure is formed inside the precipitation bin, and a liquid extraction structure is formed inside the precipitation bin, that is, at this time, the external lithium-rich solution and the external soda ash solution are simultaneously pumped into the precipitation bin through the liquid inlet cylinder assembly. In this process, the shaking of the precipitation bin on the U-shaped frame is realized by the extension and contraction of the cylinder. At this time, the lithium-rich solution and the alkaline solution react in the precipitation bin, that is, the crystal precipitation of lithium carbonate is realized, and the shaking of the precipitation bin is realized by the cylinder to accelerate the reaction and precipitation of lithium carbonate. When the lithium-rich solution enters the precipitation bin through the Z-shaped lithium-rich liquid inlet pipe, this When the fins are driven to rotate, the support shaft rod will be driven to rotate, that is, the liquid taking ball head will rotate in the ball cylinder at this time. During the rotation of the liquid taking ball head, the alkaline solution will be quantitatively taken through the liquid taking tank. In this way, when the lithium-rich solution is taken in, the alkaline solution will be quantitatively taken in synchronously, that is, the proportioning type liquid taking. The two sides of the servo motor are respectively meshed with the second bevel gear and the first bevel gear, and the first bevel gear and the second bevel gear are opposite. When the bevel drive gear rotates, the crystal separation outer sieve cylinder and the crystal separation inner cylinder form a coaxial reverse structure, that is, the crystal The separation inner cylinder rotates in the crystallization separation outer sieve cylinder, and the crystallization separation inner cylinder and the crystallization separation outer sieve cylinder rotate in opposite directions. During the coaxial reversal process, the spiral plate forms a scraping structure on the inner wall of the crystallization separation outer sieve cylinder, that is, the lithium carbonate crystals on the inner wall of the crystallization separation outer sieve cylinder are scraped off, and the spiral guide channel 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, during the coaxial reversal process, on the one hand, the discharge and separation of the discharge liquid from the precipitation bin are realized, and on the other hand, the discharge of the lithium carbonate crystal precipitated material is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 A three-dimensional diagram of another viewing angle of the present invention;

[0018] Figure 3 An exploded view of the present invention;

[0019] Figure 4A three-dimensional diagram of a precipitation bin assembly of the present invention;

[0020] Figure 5 is a cross-sectional view of a precipitation bin assembly of the present invention;

[0021] Figure 6 It is a three-dimensional diagram of the crystallization separation cylinder assembly of the present invention;

[0022] Figure 7 An exploded view of the crystallization separation cylinder assembly of the present invention;

[0023] Figure 8 It is a three-dimensional diagram of the liquid inlet cylinder assembly of the present invention;

[0024] Fig. 9 It is an exploded view of the liquid inlet cylinder assembly of the present invention;

[0025] In the figure: 100, precipitation chamber assembly; 101, precipitation chamber; 102, shaft; 103, arm; 104, drive motor; 105, crank arm; 106, linkage arm; 107, U-shaped frame; 108, piston; 109, cylinder; 110, liquid inlet; 111, liquid outlet; 112, cone drive gear; 113, servo motor; 114, motor room; 200, crystal separation cylinder assembly; 201, infusion tube; 202, liquid outlet slot; 203 , inner plate; 204, crystallization separation inner cylinder; 205, spiral plate; 206, first one-way valve; 207, first bevel gear; 208, second bevel gear; 209, crystallization separation outer sieve cylinder; 300, liquid inlet cylinder assembly; 301, L-type alkali solution inlet pipe; 302, Z-type lithium-rich solution inlet pipe; 303, straight cylinder; 304, second one-way valve; 305, fins; 306, support shaft rod; 307, liquid collection ball head; 308, liquid collection tank; 309, ball cylinder. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 9As shown, the present invention provides a lithium carbonate crystallization precipitation device, including a precipitation bin assembly 100, a liquid inlet cylinder assembly 300 is arranged at the liquid inlet of the precipitation bin assembly 100, and a crystallization separation cylinder assembly 200 is arranged at the liquid outlet of the precipitation bin assembly 100, 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 proportional liquid inlet structure at the liquid inlet of the precipitation bin assembly 100, and during the liquid discharge 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.

[0028] In a preferred embodiment, please refer to Figure 4 and Figure 5 The precipitation bin assembly 100 includes a precipitation bin 101, which is rotatably arranged on a U-shaped frame 107 through a shaft 102, and a cylinder 109 is hingedly arranged between the precipitation bin 101 and the bottom of the U-shaped frame 107, and a driving motor 104 is fixedly arranged at one end of the precipitation bin 101 through an arm frame 103, and a linkage arm 106 is rotatably arranged on the output shaft of the driving motor 104 through a crank arm 105, and a piston 108 is rotatably arranged at one end of the linkage arm 106, and 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, and a servo motor 1 is arranged inside the motor chamber 114. 13. A bevel driving gear 112 is provided on the output shaft of the servo motor 113. Both 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 contraction of the cylinder 109, the precipitation chamber 101 forms a mixed liquid shaking structure on the U-shaped frame 107. One end of the Z-type lithium-rich liquid inlet pipe 302 is fixedly arranged at the liquid inlet 110, and the other end of the Z-type lithium-rich liquid inlet pipe 302 is connected with the external lithium-rich solution through a pipeline. One end of the L-type alkali liquid inlet pipe 301 is connected with the external soda ash solution through a pipeline.

[0029] In a preferred embodiment, please refer to Figure 6 and Figure 7The crystallization separation cylinder assembly 200 includes a liquid infusion tube 201, at both ends of which are fixedly provided with a crystallization separation inner cylinder 204, a first bevel gear 207, and a first one-way valve 206, and the liquid infusion tube 201 is rotatably provided on a crystallization separation outer sieve cylinder 209 through a bearing, an inner disk 203 is fixedly provided inside the crystallization separation inner cylinder 204, and one end of the crystallization separation inner cylinder 204 is ring-arranged with a plurality of liquid outlet grooves 202, a plurality of spiral plates 205 are fixedly provided on the outer wall of the crystallization separation inner cylinder 204, a crystallization separation outer sieve cylinder 209 is sleeved on the outside of the spiral plate 205, and one end of the crystallization separation outer sieve cylinder 209 is fixedly provided with a The second bevel gear 208 and one end of the infusion tube 201 are rotatably arranged at the liquid outlet 111 on the precipitation chamber 101 through a bearing, and the solution in the precipitation chamber 101 is crystallized and separated in the inner cylinder 204 through the infusion tube 201. 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. 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 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.

[0030] In a preferred embodiment, please refer to Figure 8 and Fig. 9 The liquid inlet cylinder assembly 300 includes 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, and the Z-shaped lithium-rich liquid inlet pipe 302 is provided with a straight cylinder 303, and the interior of the straight cylinder 303 is passed through The fins 305 are rotatably provided on the support rod 306 and the bearing seat, and a liquid collecting ball head 307 is rotatably provided inside the ball barrel 309 through the support rod 306 and the bearing seat. A plurality of liquid collecting grooves 308 are provided on the liquid collecting ball head 307, and the liquid collecting ball head 307 is rotatably provided inside the ball barrel 309. As the liquid collecting ball head 307 rotates inside the ball barrel 309, during the rotation process, the liquid collecting ball head 307 forms a quantitative liquid collecting structure for the alkali solution through the liquid collecting grooves 308.

[0031] In summary, when in use, one end of the Z-type lithium-rich liquid inlet pipe 302 is connected to the external lithium-rich solution through a pipeline, and one end of the L-type alkali liquid inlet pipe 301 is connected to the external soda ash solution through a pipeline. When lithium carbonate crystallizes, the driving motor 104 pulls the piston 108 outward through the curved arm 105 and the linkage arm 106. At this time, a negative pressure bin structure is formed inside the precipitation bin 101. At this time, a liquid extraction structure is formed inside the precipitation bin 101, that is, the external lithium-rich solution and the external soda ash solution are simultaneously drawn into the precipitation bin 101 through the liquid inlet cylinder assembly 300. In this process, the shaking of the precipitation bin 101 on the U-shaped frame 107 is achieved through the extension and contraction of the cylinder 109. At this time, the lithium-rich solution and the alkali solution react in the precipitation bin 101, that is, the crystallization precipitation of lithium carbonate is achieved. The shaking of the precipitation bin 101 is achieved through the cylinder 109 to accelerate the reaction and precipitation of lithium carbonate.

[0032] On the basis of the above, the external lithium-rich solution and the external soda ash solution are simultaneously pumped into the precipitation bin 101 through the liquid inlet tube assembly 300. In this process, when the lithium-rich solution enters the precipitation bin 101 through the Z-type lithium-rich liquid inlet tube 302, the fin 305 will drive the support shaft rod 306 to rotate, that is, the liquid taking ball head 307 rotates in the ball tube 309 at this time. During the rotation of the liquid taking ball head 307, the alkaline solution is quantitatively taken through the liquid taking groove 308. In this way, when the lithium-rich solution is taken in, the synchronous quantitative taking of the alkaline solution, that is, the proportional taking, is realized. At the same time, when the lithium-rich solution inlet speed in the Z-type lithium-rich liquid inlet tube 302 is accelerated, the rotation speed of the support shaft rod 306 is accelerated, the rotation speed of the liquid taking ball head 307 is synchronously accelerated, and the quantitative taking speed of the alkaline solution is also synchronously accelerated, thereby realizing adaptive and proportional taking.

[0033] On the basis of the above, when the reaction of the solution in the precipitation bin 101 is completed, the driving motor 104 drives the piston 108 to move inside the precipitation bin 101 through the curved arm 105 and the linkage arm 106. At this time, the solution in the precipitation bin 101 is discharged into the crystallization separation cylinder assembly 200 through the liquid outlet 111 through the inward movement of the piston 108. At this time, the servo motor 113 is started. Since the two sides of the servo motor 113 are respectively meshed 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 driving gear 112 rotates, the crystallization separation outer sieve cylinder 209 and the crystallization separation inner cylinder 204 form a coaxial inverted structure, that is, the crystallization separation inner cylinder 204 rotates in 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.

[0034] On the basis of the above, when the crystallization separation outer sieve cylinder 209 and the crystallization separation inner cylinder 204 form a coaxial inverted structure, the reaction solution discharged from the precipitation chamber 101 enters the crystallization separation inner cylinder 204, and the crystallization separation inner cylinder 204 is thrown out through the liquid outlet groove 202. At this time, 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. The solution is thrown out into this spiral guide channel, and then the separation and precipitation of lithium carbonate crystals are realized through the inversion of the crystallization separation outer sieve cylinder 209, that is, it is thrown out into the spiral guide channel through the crystallization separation inner cylinder 204, and the solution is separated and precipitated through the crystallization separation outer sieve cylinder 209. The crystallization separation outer sieve cylinder 209 is synchronously reversed for separation and precipitation. At the same time, when the crystallization separation outer sieve cylinder 209 and the crystallization separation inner cylinder 204 of the present invention form a coaxial reverse structure, during the coaxial reverse process, the spiral plate 205 forms a scraping structure on the inner wall of the crystallization separation outer sieve cylinder 209, that is, the lithium carbonate crystals on the inner wall of the crystallization separation outer sieve cylinder 209 are scraped off, and the spiral guide channel 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, during the coaxial reverse process, on the one hand, the discharge and separation of the liquid discharged from the precipitation bin 101 are realized, and on the other hand, the discharge of the lithium carbonate crystallized precipitated material is realized.

[0035] In another embodiment of the present invention, a structure for dissipating heat for the servo motor 113 is disposed inside the motor chamber 114 . The heat dissipation structure is conventional technology and will not be described in detail.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention 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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