Battery-grade lithium carbonate production reaction device

Abstract

The utility model belongs to the technical field of lithium carbonate production, and particularly relates to a battery-grade lithium carbonate production reaction device which comprises a reaction kettle, a stirring rod is rotationally connected in the reaction kettle, a liquid inlet is fixedly connected to one side of the top of the reaction kettle, and feeding pipes are fixedly connected to two sides of the outer part of the reaction kettle; the utility model provides a battery-grade lithium carbonate production reaction device, and solves the problems that in the prior art, when lithium carbonate is prepared, a precipitant is directly added into a slurry solution in a carbonization reaction kettle from a charging hole in the upper part of the carbonization reaction kettle and then is mixed with the slurry solution, so that the local concentration of the precipitant is easy to be too high; the problems that lithium carbonate crystallized in the prior art cannot be quickly dispersed and cannot be uniformly mixed with a slurry solution, so that the crystallized lithium carbonate has different particle sizes and is easy to agglomerate, the purity of the lithium carbonate is influenced, and waste gas generated in the reaction process can be discharged together when the lithium carbonate after the reaction is completed in the existing reaction kettle, and the nearby air environment is easy to damage are solved.

Description

Technical Field

[0001] The utility model belongs to the field of lithium carbonate production, in particular to a battery-grade lithium carbonate production reaction device. Background Art

[0002] With the development of new energy vehicles, the lithium battery industry has also developed rapidly. As a commonly used raw material for lithium-ion batteries, the demand for lithium carbonate is also increasing. At the same time, the purity requirements for lithium carbonate are also getting higher and higher.

[0003] In the prior art, when lithium carbonate is prepared, the carbonization reactor directly adds the precipitant from the upper feeding port into the slurry solution inside the reactor and then mixes it with the slurry solution, which easily causes the local concentration of the precipitant to be too high, and it cannot be quickly dispersed, and it is unevenly mixed with the slurry solution, so that the crystallized lithium carbonate has different particle sizes and is easy to agglomerate, affecting the purity of the lithium carbonate. In addition, when the existing reactor discharges the lithium carbonate after the reaction is completed, the waste gas generated during the reaction will be discharged together, which is easy to damage the nearby air environment. Utility Model Content

[0004] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a battery-grade lithium carbonate production reaction device.

[0005] The technical solution of the utility model is as follows: a battery-grade lithium carbonate production reaction device comprises a reactor, the reactor is rotatably connected with a stirring rod, a liquid inlet is fixedly connected to one side of the top of the reactor, a feed pipe is fixedly connected to both sides of the outside of the reactor, the feed pipe is rotatably connected with a first rotating rod, a crushing blade is fixedly connected to the outside of the first rotating rod at equal intervals, a paddle is provided at the lower part of the feed pipe extending to the inside of the reactor, a discharge hole is equidistantly provided on one side of the outside of the feed pipe close to the paddle, a feeding pipe is respectively fixedly connected to the inside of two feed pipes at both sides of the outside of the reactor, a filter cover is provided on the top of the reactor, both sides of the bottom of the filter cover are symmetrically fixedly connected with an air outlet pipe, the bottom of the air outlet pipe extends to the inside of the reactor and is fixedly connected to the reactor, a suction fan is rotatably connected to the lower part of the filter cover, activated carbon is fixedly connected to the upper part of the filter cover, and a transmission mechanism is provided on the top of the reactor.

[0006] As a preferred embodiment, the transmission mechanism includes a first motor and a transmission unit, the first motor is fixedly connected to the top of the reactor, the output end of the first motor extends to the inside of the filter cover and is fixedly connected to the suction fan, the outside of the output end of the first motor is fixedly connected to a first pulley, the tops of the two first rotating rods are fixedly connected to a second pulley, the first pulley and the two second pulleys are respectively connected by two transmission belts, and the paddles can be rotated by the transmission unit.

[0007] As a preferred embodiment, the transmission unit includes a first bevel gear, a second rotating rod is rotatably connected to the lower inner part of the feed pipe, an outer end of the second rotating rod is fixedly connected to a second bevel gear, the first bevel gear is meshingly connected to the second bevel gear, and the paddle is fixedly connected to one end of the second rotating rod away from the second bevel gear.

[0008] As a preferred embodiment, an air intake hood is fixedly connected to the lower part of the interior of the reactor, an air intake pipe is fixedly connected to the interior of the air intake hood on one side of the exterior of the reactor, and a plurality of groups of air intake holes are equidistantly provided on the inner side of the air intake hood.

[0009] As a preferred embodiment, a discharge port is fixedly connected to one side of the bottom of the reactor, a second motor is fixedly connected to one side of the bottom of the reactor close to the discharge port, and an output end of the second motor extends into the interior of the reactor and is fixedly connected to a stirring rod.

[0010] As a preferred embodiment, air outlets are equidistantly provided on the top of the filter cover, supporting legs are symmetrically fixedly connected to both sides of the bottom of the reactor, and a solenoid valve is installed outside the discharge port.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. This device can introduce the precipitant and the control agent into the inside of the feed pipe, and then crush and emulsify them through the crushing blade, and then discharge the emulsified precipitant and the control agent into the inside of the reactor through the paddle to mix with the reaction slurry, which strengthens the effect of the contact reaction. At the same time, it is dispersed and discharged in the middle of the reactor through the discharge hole, avoiding the situation that the precipitant and the control agent cannot be quickly dispersed after being put into the reactor, and the local concentration is too high, resulting in uneven mixing with the slurry solution;

[0013] 2. The exhaust fan sucks the waste gas generated during the reaction process in the reactor into the inside of the filter cover through the exhaust pipes on both sides, and then absorbs the harmful substances in the waste gas through the activated carbon inside the filter cover, and then discharges it through the outlet on the top of the filter cover, thereby preventing the waste gas generated during the production of lithium carbonate from being discharged along with the lithium carbonate and then drifting into the air, causing damage to the air environment, and protecting the air quality nearby. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the filter cover in the utility model;

[0018] Figure 4 It is a cross-sectional view of the feed pipe in the utility model;

[0019] Figure 5 For the utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1, reactor; 2, stirring rod; 3, feed pipe; 4, first rotating rod; 5, crushing blade; 6, paddle; 7, discharge hole; 8, feed pipe; 9, filter cover; 10, suction fan; 11, activated carbon; 12, air outlet pipe; 13, first motor; 14, first pulley; 15, second pulley; 16, transmission belt; 17, first bevel gear; 18, second rotating rod; 19, second bevel gear; 20, air inlet cover; 21, air inlet pipe; 22, air inlet hole; 23, discharge port; 24, second motor. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figure 1-5A battery-grade lithium carbonate production reaction device comprises a reactor 1, wherein a stirring rod 2 is rotatably connected inside the reactor 1, a liquid inlet is fixedly connected to one side of the top of the reactor 1, a feed pipe 3 is fixedly connected to both sides of the outside of the reactor 1, a first rotating rod 4 is rotatably connected inside the feed pipe 3, a crushing blade 5 is fixedly connected to the outside of the first rotating rod 4 at an equidistant distance, a paddle 6 is provided at the bottom of the feed pipe 3 extending to the inside of the reactor 1, a discharge hole 7 is equidistantly provided on one side of the outside of the feed pipe 3 close to the paddle 6, a feeding pipe 8 is fixedly connected to the inside of the two feed pipes 3 on both sides of the outside of the reactor 1, a filter cover 9 is provided on the top of the reactor 1, an air outlet pipe 12 is symmetrically fixedly connected to both sides of the bottom of the filter cover 9, the bottom of the air outlet pipe 12 extends to the inside of the reactor 1 and is fixedly connected to the reactor 1, a suction fan 10 is rotatably connected to the bottom of the filter cover 9, an activated carbon 11 is fixedly connected to the top of the filter cover 9, and a transmission mechanism is provided on the top of the reactor 1.

[0023] Specifically, the transmission mechanism includes a first motor 13 and a transmission unit. The first motor 13 is fixedly connected to the top of the reactor 1. The output end of the first motor 13 extends to the inside of the filter cover 9 and is fixedly connected to the suction fan 10. The outside of the output end of the first motor 13 is fixedly connected with a first pulley 14. The tops of the two first rotating rods 4 are fixedly connected with second pulleys 15. The first pulley 14 and the two second pulleys 15 are respectively connected by two transmission belts 16 for transmission. The paddle 6 can be rotated by the transmission unit. The transmission unit includes a first bevel gear 17. The second rotating rod 18 is rotatably connected to the lower part of the feed pipe 3. The outer end of the second rotating rod 18 is fixedly connected with a second bevel gear 19. The first bevel gear 17 is meshed with the second bevel gear 19, and the paddle 6 is fixedly connected to one end of the second rotating rod 18 away from the second bevel gear 19.

[0024] Through the above technical scheme, the first motor 13 and the second motor 24 are first started, and then the slurry solution is injected into the reactor 1 through the liquid inlet, and then the precipitant and the control agent are respectively introduced into the feed pipe 3 through the two feeding pipes 8. The first motor 13 and the output end of the first motor 13 can drive the first pulley 14 to rotate, and the first pulley 14 drives the first rotating rods 4 on both sides to rotate through the second pulley 15 and the transmission belt 16, so that the first rotating rod 4 drives the crushing blade 5 to rotate, and the first rotating rod 4 drives the first bevel gear 17 to rotate, so that the first bevel gear 17 drives the second bevel gear 19 to rotate through the meshing relationship, and the second bevel gear 19 drives the paddle 6 to rotate through the second rotating rod 18, so that the crushing blade 5 crushes and emulsifies the precipitant and the control agent, and the highly emulsified precipitant and the control agent are driven by the paddle 6 and discharged through the discharge hole 7 to the inside of the reactor 1 to mix with the reaction slurry, and the stirring rod 2 can be driven to rotate through the output end of the second motor 24, and the stirring rod 2 Stir to fully blend. At the same time, the output end of the first motor 13 can drive the suction fan 10 inside the filter cover 9 to rotate. The suction fan 10 sucks the exhaust gas generated during the reaction process in the reactor 1 into the inside of the filter cover 9 through the exhaust pipes 12 on both sides, and then absorbs the harmful substances in the exhaust gas through the activated carbon 11 inside the filter cover 9, and then discharges it through the exhaust port on the top of the filter cover 9, thereby avoiding the exhaust gas generated in the process of producing lithium carbonate to be discharged with the lithium carbonate and then drifting into the air, causing damage to the air environment, and protecting the air quality nearby. The device can introduce the precipitant and the control agent into the feed pipe 3, and then crush and emulsify them through the crushing blade 5, and then discharge the emulsified precipitant and the control agent into the reactor 1 through the paddle 6 to mix with the reaction slurry, thereby enhancing the effect of the contact reaction, and at the same time disperse and discharge them in the middle of the reactor 1 through the discharge hole 7, thereby avoiding the precipitant and the control agent being unable to be quickly dispersed after being put into the reactor 1, and the local concentration is too high, resulting in uneven mixing with the slurry solution.

[0025] Specifically, an air intake hood 20 is fixedly connected to the lower part of the reactor 1 , an air intake pipe 21 is fixedly connected to the inside of the air intake hood 20 from one side of the outside of the reactor 1 , and a plurality of air intake holes 22 are evenly spaced on the inner side of the air intake hood 20 .

[0026] Through the above technical solution, the air intake pipe 21 is connected to the external air intake device, so that the carbon dioxide gas can be discharged through the air intake hole 22 in the air intake cover 20, so that the carbon dioxide and the reaction slurry can be fully mixed to accelerate the reaction rate.

[0027] Specifically, a discharge port 23 is fixedly connected to one side of the bottom of the reactor 1 , a second motor 24 is fixedly connected to one side of the bottom of the reactor 1 near the discharge port 23 , and an output end of the second motor 24 extends to the interior of the reactor 1 and is fixedly connected to the stirring rod 2 .

[0028] Through the above technical solution, after the reaction of lithium carbonate is completed, the solenoid valve can be opened to discharge the lithium carbonate through the discharge port 23, which is convenient for the staff to collect.

[0029] Specifically, the top of the filter cover 9 is provided with air outlets at equal intervals, both sides of the bottom of the reaction kettle 1 are symmetrically fixedly connected with support legs, and a solenoid valve is installed outside the discharge port 23.

[0030] Through the above technical solution, the stability of the device during operation is improved by providing support legs.

[0031] When in use, first start the first motor 13 and the second motor 24, then inject the slurry solution into the reactor 1 through the liquid inlet, and then introduce the precipitant and the control agent into the feed pipe 3 through the two feeding pipes 8 respectively. The first motor 13 and the output end of the first motor 13 can drive the first pulley 14 to rotate, and the first pulley 14 drives the first rotating rods 4 on both sides to rotate through the second pulley 15 and the transmission belt 16 respectively, so that the first rotating rod 4 drives the crushing blade 5 to rotate, and the first rotating rod 4 then drives the first bevel gear 17 to rotate, so that the first bevel gear 17 drives the second bevel gear 19 to rotate through the meshing relationship, and the second bevel gear 19 drives the paddle 6 to rotate through the second rotating rod 18, so that the crushing blade 5 crushes and emulsifies the precipitant and the control agent, and the highly emulsified precipitant and the control agent are driven by the paddle 6 and discharged through the discharge hole 7 to the inside of the reactor 1 to mix with the reaction slurry, and the stirring rod 2 can be driven to rotate through the output end of the second motor 24, and the stirring rod 2 The exhaust gas generated in the reaction process of the reactor 1 is sucked into the interior of the filter cover 9 by the exhaust pipes 12 on both sides, and then the harmful substances in the exhaust gas are absorbed by the activated carbon 11 inside the filter cover 9, and then discharged through the exhaust port on the top of the filter cover 9, thereby preventing the exhaust gas generated in the process of producing lithium carbonate from being discharged together with the lithium carbonate and then drifting into the air, causing damage to the air quality, and protecting the nearby air environment. By connecting the exhaust pipe 21 with the external air intake device, the carbon dioxide gas can be discharged through the air intake hole 22 in the air intake cover 20, so that the carbon dioxide and the reaction slurry can be fully mixed to accelerate the reaction rate. When the reaction of the lithium carbonate is completed, the solenoid valve can be opened to discharge the lithium carbonate through the discharge port 23, which is convenient for the staff to collect. The stability of the device during operation is improved by the support legs.

[0032] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A battery-grade lithium carbonate production reaction device, comprising a reaction kettle (1), It is characterized in that The reactor (1) is rotatably connected to a stirring rod (2), a liquid inlet is fixedly connected to one side of the top of the reactor (1), a feed pipe (3) is fixedly connected to both sides of the outside of the reactor (1), the feed pipe (3) is rotatably connected to a first rotating rod (4), a crushing blade (5) is equidistantly fixedly connected to the outside of the first rotating rod (4), a paddle (6) is provided at a lower portion of the inside of the feed pipe (3) extending to the inside of the reactor (1), a discharge hole (7) is equidistantly provided on one side of the outside of the feed pipe (3) close to the paddle (6), and the reactor (1) is provided with a plurality of feed pipes (3) and a plurality of feed pipes (5) connected to the outside of the reactor (1). Both sides of the exterior of the reactor (1) extend to the interior of two feed pipes (3) and are fixedly connected to feed pipes (8); a filter cover (9) is provided on the top of the reactor (1); both sides of the bottom of the filter cover (9) are symmetrically fixedly connected to air outlet pipes (12); the bottom of the air outlet pipe (12) extends to the interior of the reactor (1) and is fixedly connected to the reactor (1); a suction fan (10) is rotatably connected to the bottom of the interior of the filter cover (9); activated carbon (11) is fixedly connected to the top of the interior of the filter cover (9); and a transmission mechanism is provided on the top of the reactor (1).

2. A battery-grade lithium carbonate production reaction device according to claim 1, It is characterized in that The transmission mechanism comprises a first motor (13) and a transmission unit, wherein the first motor (13) is fixedly connected to the top of the reaction kettle (1), the output end of the first motor (13) extends to the inside of the filter cover (9) and is fixedly connected to the suction fan (10), the outside of the output end of the first motor (13) is fixedly connected to a first belt pulley (14), the tops of the two first rotating rods (4) are fixedly connected to second belt pulleys (15), the first belt pulley (14) and the two second belt pulleys (15) are respectively connected to each other by two transmission belts (16), and the paddle (6) can be rotated by the transmission unit.

3. A battery-grade lithium carbonate production reaction device according to claim 2, It is characterized in that The transmission unit comprises a first bevel gear (17), a second rotating rod (18) is rotatably connected to the lower part of the inner part of the feed pipe (3), an outer end of the second rotating rod (18) is fixedly connected to a second bevel gear (19), the first bevel gear (17) is meshingly connected to the second bevel gear (19), and the paddle (6) is fixedly connected to an end of the second rotating rod (18) away from the second bevel gear (19).

4. A battery-grade lithium carbonate production reaction device according to claim 3, It is characterized in that An air intake hood (20) is fixedly connected to the lower part of the interior of the reactor (1), an air intake pipe (21) is fixedly connected to the interior of the air intake hood (20) from one side of the exterior of the reactor (1), and a plurality of groups of air intake holes (22) are equidistantly provided on the inner side of the air intake hood (20).

5. A battery-grade lithium carbonate production reaction device according to claim 4, It is characterized in that A discharge port (23) is fixedly connected to one side of the bottom of the reaction kettle (1), and a second motor (24) is fixedly connected to one side of the bottom of the reaction kettle (1) close to the discharge port (23), wherein an output end of the second motor (24) extends into the interior of the reaction kettle (1) and is fixedly connected to the stirring rod (2).

6. A battery-grade lithium carbonate production reaction device according to claim 5, It is characterized in that The top of the filter cover (9) is provided with air outlets at equal intervals, and support legs are symmetrically fixedly connected to both sides of the bottom of the reaction kettle (1), and a solenoid valve is installed outside the discharge port (23).

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