Reaction kettle for preparing lithium carbonate and preparation method

Abstract

The invention relates to the technical field of lithium carbonate preparation, and discloses a reaction kettle for lithium carbonate preparation, the reaction kettle comprises a reaction kettle, a feeding pipe, a discharging pipe and a stirring mechanism, the feeding pipe is communicated with the side wall of the reaction kettle, the discharging pipe is communicated with the bottom of the reaction kettle, the feeding pipe and the discharging pipe are both provided with valves, the stirring mechanism is arranged in the reaction kettle, and the stirring mechanism is arranged in the reaction kettle. The stirring mechanism comprises a motor, a rotating shaft, a bearing disc and a stirring plate, the motor is mounted at the top of the reaction kettle, an output shaft of the motor is vertically downward, the top of the rotating shaft is coaxially and fixedly connected with the output shaft end of the motor, the bottom of the rotating shaft extends into the reaction kettle, and the motor drives the stirring plate to rotate to perform stirring reaction on materials; an electric wire spool drives a pull rope to pull a pressing ring to move downwards, so that a connecting rod pushes a shifting block to move close to the inner wall of the reaction kettle along a first avoiding groove, a first material cleaning roller and a second material cleaning roller are driven to move along the plate surface of a stirring plate, and lithium carbonate condensed on the plate surface of the stirring plate is cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of lithium carbonate preparation, and in particular to a reaction kettle for lithium carbonate preparation and a preparation method. Background Art

[0002] Among the preparation methods of lithium carbonate, a common method is to introduce carbon dioxide into a lithium hydroxide solution, filter, wash and dry after the reaction to obtain lithium carbonate. A commonly used device is a gas-liquid reactor. In the existing gas-liquid reactor, during the reaction of carbon dioxide and lithium hydroxide solution, the generated lithium carbonate crystals are tightly attached to the inner wall of the reactor and the stirring device. The long-term attachment of lithium carbonate will affect the reaction efficiency and is not convenient for the preparation of lithium carbonate. Moreover, when lithium carbonate is attached to the inner wall of the reactor and the stirring device, it is not convenient to take out the lithium carbonate, which affects the preparation content of lithium carbonate. For this reason, a reactor for preparing lithium carbonate is needed. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a reaction kettle for preparing lithium carbonate and a preparation method thereof.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A reaction kettle for preparing lithium carbonate, comprising:

[0006] A reactor, a feed pipe, a discharge pipe, and a stirring mechanism. The feed pipe is connected to the side wall of the reactor, the discharge pipe is connected to the bottom of the reactor, valves are provided on the feed pipe and the discharge pipe, the stirring mechanism is provided in the reactor, the stirring mechanism includes a motor, a rotating shaft, a bearing plate, and a stirring plate. The motor is installed on the top of the reactor, the output shaft of the motor is vertically downward, the top of the rotating shaft is coaxially fixedly connected with the output shaft end of the motor, the bottom of the rotating shaft extends into the reactor, the bearing plate is coaxially fixedly connected to the bottom of the rotating shaft, the stirring plate is fixedly connected to the bottom of the bearing plate, and a plurality of stirring plates are provided and evenly spaced.

[0007] A cleaning mechanism is arranged on the carrier plate, and a plurality of cleaning mechanisms are arranged and can clean the lithium carbonate condensed on the stirring plate.

[0008] As a further improvement of the technical solution, an electric winding disk is arranged on the carrying disk, a pressure ring and a spring are sleeved on the rotating shaft, one end of the spring is in contact with the bottom of the pressure ring, and the other end of the spring is in contact with the top of the carrying disk, a pull rope is arranged on the electric winding disk, and the end of the pull rope is connected to the bottom of the pressure ring. The cleaning mechanism includes a connecting rod, a shift block, a transmission component 1, a transmission component 2, a cleaning roller 1, and a cleaning roller 2. The disk surface of the carrying disk is provided with an avoidance groove 1 and an avoidance groove 2, and the avoidance groove 1 and the avoidance groove 2 are arranged in parallel. The transmission component 1. Transmission assembly 2 is disposed on one side of avoidance groove 1 and avoidance groove 2, transmission assembly 1 and transmission assembly 2 are arranged opposite to each other, the shift block is between transmission assembly 1 and transmission assembly 2, cleaning roller 1 and cleaning roller 2 are rotatably installed on the bottom of the shift block, cleaning roller 1 and cleaning roller 2 pass through avoidance groove 1 and avoidance groove 2 respectively, cleaning roller 1 and cleaning roller 2 are in contact with the plate surface of the stirring plate, the top of the connecting rod is connected to the bottom of the pressure ring, the bottom of the connecting rod is connected to the shift block, and the circumferential surface of cleaning roller 1 and cleaning roller 2 is a rough surface.

[0009] As a further improvement of the technical solution, the cleaning roller one is coordinated with the transmission component one, and the cleaning roller two is coordinated with the transmission component two. The transmission mode of the cleaning roller one and the cleaning roller two is the same. The transmission component one includes a support plate, a guide column, a rack, and a gear. The support plate is arranged on the plate surface of the supporting plate, one end of the guide column is fixedly connected to the rack, and the other end of the guide column passes through the plate surface of the support plate and is provided with a baffle. Two guide columns are provided and are arranged in parallel. The rack is parallel to the avoidance groove one, and the gear is coaxially fixed to the top of the cleaning roller one, and the gear is meshed with the rack.

[0010] As a further improvement of the present technical solution, a connecting frame is fixedly connected to the pressure ring, a scraper ring is sleeved inside the reactor, the scraper ring contacts the inner wall of the reactor, the scraper ring is located below the supporting plate, and the connecting frame passes through the surface of the supporting plate and is connected to the scraper ring.

[0011] As a further improvement of the present technical solution, the bottom of the stirring plate is connected to a scraper plate via a connecting shell, the connecting shell is made of rubber expansion material, a accommodating chamber is formed between the connecting shell and the scraper plate, a push column is vertically arranged in the stirring plate, the top of the push column extends to the top of the stirring plate, the bottom of the push column extends into the accommodating chamber, a spring three is sleeved on the push column, one end of the spring three contacts the scraper plate, the other end of the spring three contacts the top of the accommodating chamber, a pressure column is vertically arranged on the connecting frame, and the pressure column is directly above the push column.

[0012] As a further improvement of the technical solution, arc-shaped protrusions are arranged on the circumference of the cleaning roller 1 and the cleaning roller 2, and the arc-shaped protrusions on the circumference of the cleaning roller 1 and the cleaning roller 2 are oriented in opposite directions.

[0013] Compared with the prior art, the present invention has the following progress and advantages: during the use of the present invention, when the reaction is completed, the electric winding disk drives the pull rope to pull the pressure ring downward, so that the connecting rod pushes the displacement block to move along the avoidance groove 1 toward the inner wall of the reactor, thereby driving the cleaning roller 1 and the cleaning roller 2 to move along the plate surface of the stirring plate, thereby cleaning the lithium carbonate condensed on the plate surface of the stirring plate;

[0014] When the cleaning drum 1 and the cleaning drum 2 move along the surface of the stirring plate, the rough circumferential surfaces of the cleaning drum 1 and the cleaning drum 2 can separate the lithium carbonate on the stirring plate from the stirring plate. When the electric winding disk drives the pull rope to pull the pressure ring downward, the scraper ring is driven to move downward, thereby scraping off the lithium carbonate on the inner wall of the reactor.

[0015] When the electric winding disk drives the pull rope to pull the pressure ring downward, the pressure column resists the push column, thereby pushing the scraper plate downward, so that the scraper plate contacts the bottom of the reactor. When the motor drives the stirring plate to rotate, the lithium carbonate at the bottom of the reactor can be scraped up, which is beneficial for discharging. When the cleaning roller one and the cleaning roller two move along the surface of the stirring plate, the arc-shaped protrusions on the circumference of the cleaning roller one and the cleaning roller two can reciprocate and knock on the surface of the stirring plate, so that the lithium carbonate on the stirring plate can fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the interior of the reactor of the present invention.

[0019] Figure 3 It is a schematic diagram of the stirring mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the cleaning mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the cooperation between the pressure ring and the cleaning mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the installation of the shift block of the present invention.

[0023] Figure 7 It is a schematic diagram of the coordination of the cleaning roller 1 and the cleaning roller 2 of the present invention.

[0024] Figure 8 It is a schematic diagram of the cooperation between the cleaning roller and the transmission assembly of the present invention.

[0025] Fig. 9 It is a schematic diagram of the cooperation between the scraper plate and the stirring plate of the present invention.

[0026] The figure shows: 10. Reactor; 110. Feed pipe; 120. Discharge pipe; 130. Stirring mechanism; 131. Motor; 132. Rotating shaft; 133. Carrying plate; 134. Stirring plate; 140. Pressing ring; 141. Connecting frame; 142. Scraping ring; 143. Pressing column; 150. Electric winding reel; 151. Pull rope; 160. Avoidance groove 1; 161. Avoidance groove 2; 170. Scraping plate; 171. Connecting shell; 172. Accommodating chamber; 173. Pushing column; 20. Cleaning mechanism; 210. Connecting rod; 220. Shifting block; 230. Transmission assembly 1; 231. Support plate; 232. Guide column; 233. Rack; 234. Gear; 240. Transmission assembly 2; 250. Cleaning roller 1; 260. Cleaning roller 2. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-Figure 9 As shown, a reaction kettle for preparing lithium carbonate comprises:

[0032] Reactor 10, feed pipe 110, discharge pipe 120, stirring mechanism 130, the feed pipe 110 is connected to the side wall of the reactor 10, the discharge pipe 120 is connected to the bottom of the reactor 10, valves are provided on the feed pipe 110 and the discharge pipe 120, the stirring mechanism 130 is arranged in the reactor 10, the stirring mechanism 130 includes a motor 131, a rotating shaft 132, a supporting plate 133, and a stirring plate 134, the motor 131 is installed on the top of the reactor 10, the output shaft of the motor 131 is vertically downward, the top of the rotating shaft 132 is coaxially fixedly connected with the output shaft end of the motor 131, the bottom of the rotating shaft 132 extends into the reactor 10, the supporting plate 133 is coaxially fixedly connected to the bottom of the rotating shaft 132, the stirring plate 134 is fixedly connected to the bottom of the supporting plate 133, and a plurality of stirring plates 134 are provided and evenly spaced;

[0033] A cleaning mechanism 20 is disposed on the carrier plate 133 . A plurality of cleaning mechanisms 20 are disposed and can clean the lithium carbonate condensed on the stirring plate 134 .

[0034] More specifically, an electric winding disk 150 is provided on the carrier disk 133, a pressure ring 140 and a spring 1 are sleeved on the rotating shaft 132, one end of the spring 1 contacts the bottom of the pressure ring 140, and the other end of the spring 1 contacts the top of the carrier disk 133, a pull rope 151 is provided on the electric winding disk 150, and the end of the pull rope 151 is connected to the bottom of the pressure ring 140, the cleaning mechanism 20 includes a connecting rod 210, a shift block 220, a transmission component 1 230, a transmission component 240, a cleaning roller 1 250, and a cleaning roller 2 260, and an avoidance groove 160 and an avoidance groove 2 161 are provided on the disk surface of the carrier disk 133, and the avoidance groove 160 and the avoidance groove 2 161 are arranged in parallel, and the transmission component 1 230 and the transmission component The second cleaning roller 240 is respectively placed on one side of the avoidance groove 1 160 and the avoidance groove 2 161, the transmission component 1 230 and the transmission component 2 240 are arranged opposite to each other, the shift block 220 is between the transmission component 1 230 and the transmission component 2 240, the cleaning roller 1 250 and the cleaning roller 2 260 are rotatably installed on the bottom of the shift block 220, the cleaning roller 1 250 and the cleaning roller 2 260 pass through the avoidance groove 1 160 and the avoidance groove 2 161 respectively, the cleaning roller 1 250 and the cleaning roller 2 260 are in contact with the plate surface of the stirring plate 134, the top of the connecting rod 210 is connected to the bottom of the pressure ring 140, the bottom of the connecting rod 210 is connected to the shift block 220, and the circumferential surface of the cleaning roller 1 250 and the cleaning roller 2 260 is a rough surface.

[0035] More specifically, the cleaning roller 250 is in transmission cooperation with the transmission component 230, and the cleaning roller 260 is in transmission cooperation with the transmission component 240. The cleaning roller 250 and the cleaning roller 260 have the same transmission mode. The transmission component 230 includes a support plate 231, a guide column 232, a rack 233, and a gear 234. The support plate 231 is arranged on the plate surface of the carrier plate 133, one end of the guide column 232 is fixedly connected to the rack 233, and the other end of the guide column 232 passes through the plate surface of the support plate 231 and is provided with a baffle. Two guide columns 232 are provided and are arranged in parallel. The rack 233 is parallel to the avoidance groove 160, and the gear 234 is coaxially fixed to the top of the cleaning roller 250. The gear 234 is meshed with the rack 233, and the motor 131 drives the stirring plate 13 4 rotates to stir the material for reaction. When the reaction is completed, the electric winding disk 150 drives the pull rope 151 to pull the pressure ring 140 downward, so that the connecting rod 210 pushes the displacement block 220 to move along the avoidance groove 1 160 to the inner wall of the reactor 10, thereby driving the cleaning roller 1 250 and the cleaning roller 2 260 to move along the plate surface of the stirring plate 134, so as to clean the lithium carbonate condensed on the plate surface of the stirring plate 134. During the movement of the cleaning roller 1 250 and the cleaning roller 2 260 along the plate surface of the stirring plate 134, the rack 233 drives the gear 234, the cleaning roller 1 250 and the cleaning roller 2 260 to rotate, and the rough circumferential surfaces of the cleaning roller 1 250 and the cleaning roller 2 260 can separate the lithium carbonate on the stirring plate 134 from the stirring plate 134.

[0036] like Figure 3 As shown, a connecting frame 141 is fixedly connected to the pressure ring 140, a scraper ring 142 is sleeved inside the reactor 10, the scraper ring 142 contacts the inner wall of the reactor 10, the scraper ring 142 is below the supporting plate 133, the connecting frame 141 passes through the disk surface of the supporting plate 133 and is connected to the scraper ring 142, and the electric winding drum 150 drives the pull rope 151 to pull the pressure ring 140 downward, thereby driving the scraper ring 142 to move downward, thereby scraping off the lithium carbonate on the inner wall of the reactor 10.

[0037] like Figure 4 , Fig. 9As shown, the bottom of the stirring plate 134 is connected to the scraper plate 170 through a connecting shell 171. The connecting shell 171 is made of rubber expansion material. A accommodating chamber 172 is formed between the connecting shell 171 and the scraper plate 170. A push column 173 is vertically arranged in the stirring plate 134. The top of the push column 173 extends to the top of the stirring plate 134, and the bottom of the push column 173 extends into the accommodating chamber 172. A spring three is sleeved on the push column 173. One end of the spring three contacts the scraper plate 170, and the other end of the spring three contacts the scraper plate 170. The top of the accommodating chamber 172 is in contact, and a pressure column 143 is vertically arranged on the upper part of the connecting frame 141. The pressure column 143 is directly above the push column 173. When the electric winding drum 150 drives the pull rope 151 to pull the pressure ring 140 downward, the pressure column 143 resists the push column 173, thereby pushing the scraper plate 170 downward, so that the scraper plate 170 contacts the bottom of the reactor 10. When the motor 131 drives the stirring plate 134 to rotate, the lithium carbonate at the bottom of the reactor 10 can be scraped up, which is convenient for discharging the lithium carbonate.

[0038] More specifically, arc-shaped protrusions are provided on the circumference of cleaning roller 250 and cleaning roller 260, and the arc-shaped protrusions on the circumference of cleaning roller 250 and cleaning roller 260 are in opposite directions. When cleaning roller 250 and cleaning roller 260 move along the surface of stirring plate 134, the arc-shaped protrusions on the circumference of cleaning roller 250 and cleaning roller 260 can reciprocately knock the surface of stirring plate 134, which is conducive to the falling of lithium carbonate on stirring plate 134.

[0039] Working principle:

[0040] During use of the present invention, the motor 131 drives the stirring plate 134 to rotate to stir the material. When the reaction is completed, the electric winding disk 150 drives the pull rope 151 to pull the pressure ring 140 downward, so that the connecting rod 210 pushes the displacement block 220 to move along the avoidance groove 160 to the inner wall of the reactor 10, thereby driving the cleaning roller 1 250 and the cleaning roller 2 260 to move along the plate surface of the stirring plate 134, so as to clean the lithium carbonate condensed on the plate surface of the stirring plate 134. During the movement of the cleaning roller 1 250 and the cleaning roller 2 260 along the plate surface of the stirring plate 134, the rack 233 drives the gear 234, the cleaning roller 1 250 and the cleaning roller 2 260 to rotate, and the rough circumferential surfaces of the cleaning roller 1 250 and the cleaning roller 2 260 can separate the lithium carbonate on the stirring plate 134 from the stirring plate 134. When the electric winding drum 150 drives the pull rope 151 to pull the pressure ring 140 downward, the scraper ring 142 is driven downward to scrape off the lithium carbonate on the inner wall of the reactor 10; when the electric winding drum 150 drives the pull rope 151 to pull the pressure ring 140 downward, the pressure column 143 contacts the push column 173, thereby pushing the scraper plate 170 downward, so that the scraper plate 170 contacts the bottom of the reactor 10; when the motor 131 drives the stirring plate 134 to rotate, the lithium carbonate at the bottom of the reactor 10 can be scraped up to facilitate the discharge of the lithium carbonate; when the cleaning roller 1 250 and the cleaning roller 2 260 move along the plate surface of the stirring plate 134, the arc-shaped protrusions on the circumference of the cleaning roller 1 250 and the cleaning roller 2 260 can reciprocately knock on the plate surface of the stirring plate 134, which is conducive to the falling of the lithium carbonate on the stirring plate 134.

[0041] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A reaction kettle for preparing lithium carbonate, It is characterized in that It includes: A reactor, a feed pipe, a discharge pipe, and a stirring mechanism. The feed pipe is connected to the side wall of the reactor, the discharge pipe is connected to the bottom of the reactor, valves are provided on the feed pipe and the discharge pipe, the stirring mechanism is provided in the reactor, the stirring mechanism includes a motor, a rotating shaft, a bearing plate, and a stirring plate. The motor is installed on the top of the reactor, the output shaft of the motor is vertically downward, the top of the rotating shaft is coaxially fixedly connected with the output shaft end of the motor, the bottom of the rotating shaft extends into the reactor, the bearing plate is coaxially fixedly connected to the bottom of the rotating shaft, the stirring plate is fixedly connected to the bottom of the bearing plate, and a plurality of stirring plates are provided and evenly spaced. A cleaning mechanism is arranged on the carrier plate, and a plurality of cleaning mechanisms are arranged and can clean the lithium carbonate condensed on the stirring plate.

2. A reaction kettle for preparing lithium carbonate according to claim 1, It is characterized in that An electric winding disk is arranged on the carrying disk, a pressure ring and a spring 1 are sleeved on the rotating shaft, one end of the spring 1 contacts the bottom of the pressure ring, and the other end of the spring 1 contacts the top of the carrying disk, a pull rope is arranged on the electric winding disk, and the end of the pull rope is connected to the bottom of the pressure ring. The cleaning mechanism comprises a connecting rod, a shift block, a transmission component 1, a transmission component 2, a cleaning roller 1, and a cleaning roller 2. An avoidance groove 1 and an avoidance groove 2 are opened on the disk surface of the carrying disk, and the avoidance groove 1 and the avoidance groove 2 are arranged in parallel. The transmission component 1 and the transmission component 2 are respectively arranged on one side of the avoidance groove 1 and the avoidance groove 2, and the transmission component 1 and the transmission component 2 are arranged relatively. The shift block is between the transmission component 1 and the transmission component 2, and the cleaning roller 1 and the cleaning roller 2 are rotatably installed at the bottom of the shift block, and the cleaning roller 1 and the cleaning roller 2 pass through the avoidance groove 1 and the avoidance groove 2 respectively, and the cleaning roller 1 and the cleaning roller 2 are in contact with the plate surface of the stirring plate, the top of the connecting rod is connected to the bottom of the pressure ring, and the bottom of the connecting rod is connected to the shift block.

3. A reaction kettle for preparing lithium carbonate according to claim 2, It is characterized in that The cleaning roller one is matched with the transmission component one for transmission, and the cleaning roller two is matched with the transmission component two for transmission. The transmission mode of the cleaning roller one and the cleaning roller two is the same. The transmission component one includes a support plate, a guide column, a rack and a gear. The support plate is arranged on the plate surface of the carrier plate, one end of the guide column is fixedly connected to the rack, and the other end of the guide column passes through the plate surface of the support plate and is provided with a baffle. Two guide columns are provided and are arranged in parallel. The rack is parallel to the avoidance groove one, and the gear is coaxially fixed to the top of the cleaning roller one, and the gear is meshed with the rack.

4. A reaction kettle for preparing lithium carbonate according to claim 3, It is characterized in that A connecting frame is fixedly connected to the pressure ring, a scraper ring is sleeved inside the reactor, the scraper ring contacts the inner wall of the reactor, the scraper ring is located below the carrier plate, and the connecting frame passes through the plate surface of the carrier plate and is connected to the scraper ring.

5. A reaction kettle for preparing lithium carbonate according to claim 4, It is characterized in that The bottom of the stirring plate is connected to a scraper plate via a connecting shell, the connecting shell is made of rubber expansion material, a accommodating chamber is formed between the connecting shell and the scraper plate, a push column is vertically arranged in the stirring plate, the top of the push column extends to the top of the stirring plate, the bottom of the push column extends into the accommodating chamber, a spring three is sleeved on the push column, one end of the spring three contacts the scraper plate, the other end of the spring three contacts the top of the accommodating chamber, a pressure column is vertically arranged on the connecting frame, and the pressure column is directly above the push column.

6. A reaction kettle for preparing lithium carbonate according to claim 5, It is characterized in that Arc-shaped protrusions are arranged on the circumferences of the first cleaning roller and the second cleaning roller, and the directions of the arc-shaped protrusions on the circumferences of the first cleaning roller and the second cleaning roller are opposite.

7. A reaction kettle for preparing lithium carbonate according to claim 5, It is characterized in that The circumferential surfaces of the first cleaning roller and the second cleaning roller are rough surfaces.

8. A method for preparing a reaction kettle for preparing lithium carbonate according to claim 7, wherein: S1. The motor drives the stirring plate to rotate to stir the material for reaction. When the reaction is completed, the electric winding disk drives the pull rope to pull the pressure ring downward, so that the connecting rod pushes the shift block to move along the avoidance groove toward the inner wall of the reactor, thereby driving the cleaning drum 1 and the cleaning drum 2 to move along the surface of the stirring plate, thereby cleaning the lithium carbonate condensed on the surface of the stirring plate; S2. When the cleaning drum 1 and the cleaning drum 2 move along the surface of the stirring plate, the rack drives the gear, the cleaning drum 1 and the cleaning drum 2 to rotate, and the rough circumferential surface of the cleaning drum 1 and the cleaning drum 2 can separate the lithium carbonate on the stirring plate from the stirring plate. When the electric winding disk drives the pull rope to pull the pressure ring downward, the scraper ring is driven to move downward, thereby scraping off the lithium carbonate on the inner wall of the reactor; S3. When the electric winding disk drives the pull rope to pull the pressure ring downward, the pressure column resists the push column, thereby pushing the scraper plate downward, so that the scraper plate contacts the bottom of the reactor. When the motor drives the stirring plate to rotate, the lithium carbonate at the bottom of the reactor can be scraped up. When the cleaning roller 1 and the cleaning roller 2 move along the surface of the stirring plate, the arc-shaped protrusions on the circumference of the cleaning roller 1 and the cleaning roller 2 can reciprocate and knock on the surface of the stirring plate, so that the lithium carbonate on the stirring plate can fall off.

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