A lithium carbonate drying device

Abstract

The present invention relates to a field of chemical technology, specifically to a drying device for lithium carbonate, comprising a drying box, on which a storage box connected to the drying box is fixed, and the drying device for lithium carbonate also includes: a reaction box fixedly installed on the drying box, through grooves are provided on both sides of the reaction box, the bottom of the reaction box is a through structure and is provided with a slide groove, and a sealing plate is slidably installed in the slide groove; a stirring component is arranged on the reaction box, a filtering component is arranged on the reaction box, and a regulating mechanism connected to the sealing plate is also arranged on the reaction box; a storage box is arranged in the drying box, and a reciprocating mechanism connected to the storage box is arranged in the drying box; a swing rod is rotatably installed in the storage box, a push plate is fixed on the swing rod, a swing mechanism connected to the swing rod is arranged on the storage box, and a limiting component connected to the swing mechanism is arranged in the drying box.

Description

Technical Field

[0001] The invention relates to the technical field of chemical industry, in particular to a drying device for lithium carbonate. Background Art

[0002] As a new energy source, lithium-ion batteries are the most important battery products and are widely used in mobile communications, watches, cameras, calculators, computer memory backup power supplies, pacemakers, safety alarms, electric vehicle power supplies, etc. Battery-grade lithium carbonate is the main material for producing energy storage batteries, and its application prospects are very broad.

[0003] There are several methods for synthesizing lithium carbonate: brine comprehensive utilization method, lime sintering method, sulfuric acid method, by-product method, etc. The sulfuric acid method has the highest utilization rate because of its high yield in producing lithium carbonate. In the sulfuric acid method, lithium carbonate is prepared by leaching and sintering spodumene, and the solution obtained contains lithium sulfate. Lithium carbonate can be obtained by adding saturated sodium carbonate to react.

[0004] The obtained lithium carbonate needs to be washed several times and then dried to obtain battery-grade lithium carbonate products. However, after the reaction, the existing lithium sulfate and sodium carbonate need to be transferred to other equipment for filtration, which reduces the preparation efficiency. In addition, during the drying process, the lithium carbonate is not continuously turned over after being placed in the drying box and is directly dried, resulting in residual moisture in the agglomerated lithium carbonate, which reduces the purity of the lithium carbonate. Summary of the invention

[0005] The object of the present invention is to provide a drying device for lithium carbonate to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lithium carbonate drying device, comprising a drying box, a storage box connected to the drying box being fixed on the drying box, characterized in that the lithium carbonate drying device further comprises:

[0008] A reaction box, used for preparing lithium carbonate and fixedly mounted on the drying box, with through grooves on both sides of the reaction box, a through structure at the bottom of the reaction box and a slide groove, and a sealing plate symmetrically arranged for closing the reaction box and slidingly mounted in the slide groove;

[0009] A stirring assembly is arranged on the reaction box, and the stirring assembly can stir the reactants when the reactants are added into the reaction box. The reaction box is provided with a filtering assembly matched with the through slot, and the reaction box is also provided with a regulating mechanism connected with the sealing plate, and the regulating mechanism is used to switch the closed and conducting states of the through slot and drive the sealing plates to move closer to or away from each other;

[0010] A storage box is arranged in the drying box, the storage box is used to contain lithium carbonate and transport lithium carbonate into the drying box, a reciprocating mechanism connected to the storage box is arranged in the drying box, and the reciprocating mechanism can drive the storage box to reciprocate along the length direction of the drying box;

[0011] A swing rod is rotatably installed in the storage box and is symmetrically arranged. A symmetrically arranged push plate is fixed on the swing rod. A swing mechanism connected to the swing rod is provided on the storage box. A limit assembly connected to the swing mechanism and the swing rod is provided in the drying box. The limit assembly can drive the swing mechanism to move to adjust the angle of the swing rod.

[0012] As a further solution of the present invention: the stirring assembly includes a No. 1 motor fixedly mounted on the reaction box, a stirring rod connected to the output shaft of the No. 1 motor is rotatably mounted in the reaction box, and a plurality of groups of stirring blades equidistantly arranged in a circle are fixed on the stirring rod.

[0013] As a further solution of the present invention: the filter assembly includes a limit frame fixedly installed in the reaction box and symmetrically arranged, a limit card plate is movably engaged on the limit frame, a filter membrane is clamped between the limit frame and the limit card plate, and the filter membrane cooperates with the through groove.

[0014] As a further solution of the present invention: the regulating mechanism includes a sealing assembly arranged on the reaction box and symmetrically arranged, an arc-shaped rack plate fixedly installed on the sealing assembly and symmetrically arranged, and a transverse rack plate fixedly installed on the sealing plate and meshing with the arc-shaped rack plate, and the sealing assembly cooperates with the through groove.

[0015] As a further solution of the present invention: the sealing assembly includes a hinged plate hinged on the reaction box and matched with the through groove, a fixed plate is fixed on the hinged plate, a cylinder hinged to the reaction box is hinged on the fixed plate, and the hinged plate is fixedly connected to the arc-shaped rack plate.

[0016] As a further solution of the present invention: the reciprocating mechanism includes a No. 2 motor fixedly installed on the drying box, a transmission rod rotatably installed in the drying box and connected to the output shaft of the No. 2 motor, and a guide groove opened on the transmission rod. A guide assembly connected to the guide groove is provided in the drying box, and the guide assembly is fixedly connected to the storage box.

[0017] As a further solution of the present invention: the guide assembly includes guide rods fixedly installed in the drying box and symmetrically arranged, and guide sleeves are movably installed on the guide rods. A diamond block engaged with the guide groove is rotatably installed on the guide sleeves, and the guide sleeves are fixedly connected to the storage box.

[0018] As a further solution of the present invention: the swing mechanism includes a hollow rod rotatably mounted on the storage box and symmetrically arranged, a sliding assembly arranged on the storage box and connected to the hollow rod, a spring fixedly mounted in the hollow rod and abutting against the sliding assembly, a limiting wheel rotatably mounted on the sliding assembly, the limiting wheel abuts against the swing rod, and the hollow rod is connected to the limiting assembly.

[0019] As a further solution of the present invention: the sliding assembly includes a slot opened on the hollow rod, a movable rod movably installed in the hollow rod, a limit block fixedly installed on the movable rod and engaged with the slot, and the movable rod abuts against the spring and is rotatably connected to the limit wheel.

[0020] As a further solution of the present invention: the limit assembly includes a limit rod fixedly installed on the side of the hollow rod away from the movable rod, a limit plate fixedly installed in the drying box and symmetrically arranged, and a No. 1 gear rod and a No. 2 gear rod fixedly installed on the storage box and symmetrically arranged, the No. 1 gear rod abuts against the swing rod, the No. 2 gear rod abuts against the hollow rod, and the limit plate cooperates with the limit rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: during the reaction process of the reactants, the regulating mechanism of the present application can cooperate with the through groove to make the through groove in a closed state, and under the action of the stirring component, the reaction rate is accelerated. When the preparation of lithium carbonate is completed, the regulating mechanism can control the discharge of residual reactants and transport the lithium carbonate to the storage box. At this time, under the action of the reciprocating mechanism, the lithium carbonate is evenly spread in the drying box, thereby accelerating the drying rate. In order to ensure that the lithium carbonate is completely dried, the lithium carbonate needs to be turned over. Under the action of the limit assembly and the swing mechanism, the position of the push plate is adjusted by the swing rod, and under the action of the push plate, the lithium carbonate is piled up and spread again to completely dry the lithium carbonate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a structural schematic diagram of an embodiment of a drying device for lithium carbonate.

[0023] Figure 2 This is a schematic structural diagram from the first angle of an embodiment of a drying device for lithium carbonate.

[0024] Figure 3 This is a schematic structural diagram from a second angle in an embodiment of a drying device for lithium carbonate.

[0025] Figure 4 The figure is a schematic diagram of the half-section structure of a drying box in one embodiment of a drying device for lithium carbonate.

[0026] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 6 The present invention is a schematic diagram of the connection relationship among the reciprocating mechanism, the swinging mechanism and the limiting assembly in one embodiment of a lithium carbonate drying device.

[0028] Figure 7 The figure is a schematic diagram of the explosion structure of the swing mechanism and the limit rod in one embodiment of the drying device for lithium carbonate.

[0029] Figure 8 This is a schematic diagram of the half-section structure of a reaction box in an embodiment of a lithium carbonate drying device.

[0030] Fig. 9 The present invention is a schematic diagram of the connection relationship between some control mechanisms and sealing plates in one embodiment of a lithium carbonate drying device.

[0031] Fig.10 The figure is a schematic diagram of the explosion structure of the filter assembly in one embodiment of the drying device for lithium carbonate.

[0032] In the figure: 1. drying box; 2. reaction box; 3. storage box; 4. No. 1 motor; 5. stirring rod; 6. stirring blade; 7. limit frame; 8. limit card plate; 9. filter membrane; 10. sealing plate; 11. hinge plate; 12. fixed plate; 13. cylinder; 14. arc rack plate; 15. horizontal rack plate; 16. storage box; 17. guide rod; 18. guide sleeve; 19. diamond block; 20. No. 2 motor; 21. transmission rod; 22. guide groove; 23. hollow rod; 24. card slot; 25. movable rod; 26. limit wheel; 27. limit block; 28. spring; 29. ​​limit rod; 30. swing rod; 31. push plate; 32. No. 1 gear lever; 33. No. 2 gear lever; 34. limit plate. DETAILED DESCRIPTION

[0033] 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.

[0034] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0035] See also Figures 1 to 10 In an embodiment of the present invention, a lithium carbonate drying device comprises a drying box 1, a storage box 3 connected to the drying box 1 is fixed on the drying box 1, and the lithium carbonate drying device further comprises:

[0036] The reaction box 2 is used to prepare lithium carbonate and is fixedly installed on the drying box 1. Through grooves are provided on both sides of the reaction box 2. The bottom of the reaction box 2 is a through structure and is provided with a slide groove. A sealing plate 10 symmetrically arranged for closing the reaction box 2 is slidably installed in the slide groove. A heating pipe is provided in the drying box 1, and the lithium carbonate can be dried when the lithium carbonate is placed in the drying box 1. The drying box 1 is also provided with a controller, and the switch of the heating pipe is controlled under the action of the controller. In the initial state, the two sealing plates 10 are in a tightly fitted state. Under the action of the sealing plate 10, the bottom of the reaction box 2 is in a closed state. A resistance heater is provided in the reaction box 2. When lithium carbonate is prepared by the sulfuric acid method, Li 2 SO 4 The solution was placed in the reaction box 2 and heated to 90°C by the resistance heater. At the same time, Na 2 CO 3 Saturated solution, and continuously measure the pH value of the solution during the addition process. 2 CO 3 The addition of saturated solution will react with Li 2 SO 4 The solution reacts and generates lithium carbonate precipitate and Na 2 SO 4 The pH of the solution can be measured by a pH meter. The pH meter and the resistance heater are applications of the prior art and will not be described in detail in this application.

[0037] See also Figure 1-3 Preferably, when preparing lithium carbonate by sulfuric acid method, spodumene is roasted, then crushed and sieved to obtain ore powder, sulfuric acid solution is added to the ore powder to obtain a crude solution, excess sulfuric acid is neutralized with calcium carbonate to adjust the pH of the crude solution to 6.5, and then filtered to obtain a lithium sulfate solution, and then a hydrogen peroxide solution is added to the lithium sulfate solution to oxidize ferrous ions into ferric ions, and then a 30% sodium hydroxide solution is added to the solution until the pH of the solution is 12, Mg and Fe in the solution form magnesium hydroxide and ferric hydroxide precipitates, and the precipitate is filtered and adjusted to pH 7 with dilute sulfuric acid to form aluminum hydroxide precipitates in the solution, and after filtering the precipitate, lime milk and excess sodium carbonate are used to remove calcium ions and other residual metal ions, and the filtrate is evaporated and concentrated to obtain a Li2SO4 solution, at which time the pH of the Li2SO4 solution is 12, and as Na 2 CO 3 With the addition of saturated solution, the pH of the mixed solution will gradually decrease. When the pH of the mixed solution is 9, Na 2 CO 3 Stop adding saturated solution.

[0038] See also Figure 1-3 A stirring assembly is arranged on the reaction box 2. The stirring assembly can stir the reactants when the reactants are added into the reaction box 2. The stirring assembly includes a No. 1 motor 4 fixedly mounted on the reaction box 2. A stirring rod 5 connected to the output shaft of the No. 1 motor 4 is rotatably mounted in the reaction box 2. A plurality of stirring blades 6 arranged equidistantly in a circle are fixed on the stirring rod 5.

[0039] It should be noted that the stirring blades 6 are arranged equidistantly around the circumference, and there are three groups of stirring blades arranged equidistantly. When the Li2SO4 solution is placed in the reaction box 2, Na 2 CO 3 Saturated solution, in order to speed up the reaction rate and accurately measure the pH of the solution, it is necessary to stir the solution in the reaction box 2. At this time, the No. 1 motor 4 works, driving the stirring rod 5 to rotate, thereby driving the stirring blade 6 to rotate. Under the action of the stirring blade 6, the solution is stirred. When the pH of the mixed solution drops to 9, stop adding Na 2 CO 3 The saturated solution, the No. 1 motor 4 continues to work, and after stirring the mixed solution for thirty minutes, if the pH of the solution does not change, it means that the reaction is completed. At this time, the No. 1 motor 4 stops working, and the generated lithium carbonate will gradually precipitate and fall onto the sealing plate 10.

[0040] See also Figure 8 , Fig.10The reaction box 2 is provided with a filter assembly that cooperates with the through groove. The filter assembly includes a limit frame 7 that is fixedly installed in the reaction box 2 and is symmetrically arranged. A limit card plate 8 is movably engaged with the limit frame 7. A filter membrane 9 is clamped between the limit frame 7 and the limit card plate 8, and the filter membrane 9 cooperates with the through groove.

[0041] Furthermore, through grooves are provided on both sides of the reaction box 2. Since the reactants will generate lithium carbonate solid during the reaction process, the solution needs to be separated from the lithium carbonate after the reaction is completed. The filter membrane 9 can filter the mixed solution and the lithium carbonate. In the initial state, the limiting card plate 8 and the limiting frame 7 are in a separated state. When the filter membrane 9 needs to be clamped, the filter membrane 9 is placed on the limiting frame 7, and the limiting card plate 8 is pressed into the limiting frame 7. Under the action of the limiting frame 7 and the limiting card plate 8, the filter membrane 9 is fixed. The size of the filter membrane 9 is larger than the size of the through groove. Under the action of the filter membrane 9, the through groove is completely covered, thereby ensuring that the mixed solution will not be discharged through the through groove before filtration. Among them, the limiting card plate 8 is made of elastic material. When the limiting card plate 8 cooperates with the limiting frame 7, it can be completely fitted with the limiting frame 7, thereby fixing the filter membrane 9.

[0042] See also Figure 1-3 , Figure 8-9 The reaction box 2 is also provided with a regulating mechanism connected to the sealing plate 10, and the regulating mechanism is used to switch the closed and conducting states of the through groove, and drive the sealing plates 10 to move closer to or away from each other. The regulating mechanism includes a sealing component arranged on the reaction box 2 and symmetrically arranged, an arc-shaped rack plate 14 fixedly installed on the sealing component and symmetrically arranged, and a transverse rack plate 15 fixedly installed on the sealing plate 10 and meshing with the arc-shaped rack plate 14. The sealing component cooperates with the through groove, wherein the sealing component includes a hinged plate 11 hinged on the reaction box 2 and cooperates with the through groove, a fixed plate 12 is fixed on the hinged plate 11, and a cylinder 13 hinged to the fixed plate 12 is hinged on the reaction box 2, and the hinged plate 11 is fixedly connected to the arc-shaped rack plate 14.

[0043] Furthermore, the middle of the storage box 3 is connected to the drying box 1, and the two sides of the storage box 3 are located below the through groove. The hinged plate 11 is convexly arranged toward one side of the reaction box 2. During the reaction of the reactants, the through groove needs to be closed to ensure that the solution will not be discharged through the through groove. In the initial state, the arc-shaped rack plate 14 and the transverse rack plate 15 are in a separated state. Under the action of the cylinder 13, the hinged plate 11 is tightly fitted to the surface of the reaction box 2 through the fixed plate 12, and the protruding position of the hinged plate 11 enters the through groove and fits tightly with the through groove, thereby closing the through groove. At this time, the solution in the reaction box 2 will not leak out of the reaction box 2. After the reaction of the reactants in the reaction box 2 is completed, the solution in the reaction box 2 can be allowed to settle for a certain period of time, so that the lithium carbonate is precipitated on the sealing plate 10. At the same time, the cylinder 13 works and drives the hinged plate 11 to rotate a certain angle around the hinge point through the fixed plate 12. The degree of the residual solution after the reaction is filtered under the action of the filter membrane 9 and discharged through the through groove. The discharged solution will fall into the storage box 3. When the solution is discharged, there is wet lithium carbonate remaining in the reaction box 2. At this time, the lithium carbonate needs to be washed with water. Pure water is added to the reaction box 2, and the water in the reaction box 2 is discharged through the filter membrane 9. After washing several times, the lithium carbonate in the reaction box 2 needs to be discharged and transported into the storage box 16. At this time, the cylinder 13 works again and drives the hinged plate 11 to rotate through the fixed plate 12, so that the arc-shaped rack plate 14 moves. When the arc-shaped rack plate 14 moves to the meshing position with the transverse rack plate 15, under the action of the arc-shaped rack plate 14, the two sealing plates 10 fixed with the transverse rack plate 15 are driven to move toward a position away from each other, so that the lithium carbonate placed on the sealing plate 10 is separated from the reaction box 2 and enters the storage box 16.

[0044] See also Figure 4 , Figure 6 , a storage box 16 is arranged in the drying box 1, the storage box 16 is used to hold lithium carbonate and transport lithium carbonate to the drying box 1, a reciprocating mechanism connected to the storage box 16 is arranged in the drying box 1, the reciprocating mechanism can drive the storage box 16 to reciprocate along the length direction of the drying box 1, the reciprocating mechanism includes a No. 2 motor 20 fixedly mounted on the drying box 1, a transmission rod 21 rotatably mounted in the drying box 1 and connected to the output shaft of the No. 2 motor 20, and a guide groove 22 provided on the transmission rod 21, a guide assembly connected to the guide groove 22 is arranged in the drying box 1, and the guide assembly is fixedly connected to the storage box 16, wherein the guide assembly includes a guide rod 17 fixedly mounted in the drying box 1 and symmetrically arranged, a guide sleeve 18 is movably mounted on the guide rod 17, a rhombus block 19 engaged with the guide groove 22 is rotatably mounted on the guide sleeve 18, and the guide sleeve 18 is fixedly connected to the storage box 16.

[0045] Furthermore, the guide groove 22 can be divided into four sections, the first section is the first thread groove, the second section is the first semi-annular groove, the third section is the second thread groove connected to the first semi-annular groove, and the fourth section is the second semi-annular groove connected to the first thread groove and the second thread groove. The first thread groove and the second thread groove are arranged to intersect, and the diamond block 19 is arranged in a diamond shape. In the initial state, the diamond block 19 is located in the first semi-annular groove. At this time, the guide sleeve 18 is located at the end of the stroke on the guide rod 17 toward the reaction box 2. The storage box 16 is located directly below the storage box 3. A valve is provided at the bottom of the storage box 16 for controlling the release of lithium carbonate. When the sealing plates 10 move away from each other, the lithium carbonate in the reaction box 2 will enter the storage box 16. When the lithium carbonate completely enters the storage box 16, the No. 2 motor 20 works at this time, driving the transmission rod 21 to rotate, thereby driving the guide groove 22 to rotate. Under the action of the guide groove 22, the diamond block 19 enters the first thread groove through the first semi-annular groove and drives the guide sleeve 18 along The guide rod 17 moves in the length direction, and at the same time, the valve at the bottom of the storage box 16 opens, and the lithium carbonate in the storage box 16 is evenly transported to the bottom of the drying box 1. When the diamond block 19 moves to the connection position between the first thread groove and the second thread groove, due to its diamond shape, the diamond block 19 will not be separated from the first thread groove, and moves in the first thread groove, so that the storage box 16 continues to move along the length direction of the guide rod 17, so that the lithium carbonate is evenly spread in the drying box 1. When the lithium carbonate is spread, the diamond block 19 has not moved to the second semi-annular groove. When the diamond block 19 enters the second semi-annular groove, the storage box 16 moves to the end of the stroke away from the reaction box 2. When it is necessary to drive the reaction box 2 to move toward the initial position, the transmission rod 21 continues to rotate, so that the diamond block 19 enters the second thread groove to drive the guide sleeve 18 to move toward the initial position. At this time, the diamond block 19 will always move in the second thread groove until the diamond block 19 enters the first semi-annular groove again.

[0046] See also Figure 4-7, a swing rod 30 is rotatably installed in the storage box 16 and is symmetrically arranged, a push plate 31 symmetrically arranged is fixed on the swing rod 30, and a swing mechanism connected to the swing rod 30 is provided on the storage box 16, the swing mechanism includes a hollow rod 23 rotatably installed on the storage box 16 and symmetrically arranged, a sliding assembly arranged on the storage box 16 and connected to the hollow rod 23, a spring 28 fixedly installed in the hollow rod 23 and abutting against the sliding assembly, a limiting wheel 26 is rotatably installed on the sliding assembly, the limiting wheel 26 abuts against the swing rod 30, and the hollow rod 23 is connected to the limiting assembly, wherein the sliding assembly includes a slot 24 opened on the hollow rod 23, a movable rod 25 movably installed in the hollow rod 23, a limiting block 27 fixedly installed on the movable rod 25 and engaged with the slot 24, the movable rod 25 abuts against the spring 28 and is rotatably connected to the limiting wheel 26.

[0047] To go further, the rotating shafts of the hollow rod 23 and the swing rod 30 are located at the central axis position of one side of the storage box 16. When the storage box 16 is located directly below the storage box 3, under the action of the limiting assembly, the hollow rod 23 swings toward one end of the storage box 3 to the side away from the No. 2 motor 20, and the other end of the hollow rod 23 swings to the side facing the No. 2 motor 20. The spring 28 is in a compressed state. Under the action of the spring 28, the movable rod 25 is located at the end of the stroke away from the hollow rod 23. At this time, the limiting wheel 26 abuts against the swing rod 30 on one side of the No. 2 motor 20, and drives the swing rod 30 to rotate a certain angle around the rotation point and then abut against the limiting assembly, so that one of the push plates 31 is located near the bottom of the drying box 1, and the other push plate 31 is located away from the bottom of the drying box 1, and the push plate 31 close to the drying box 1 is not in contact with the drying box 1. When the transmission rod 21 rotates, it drives the push plate 31 maintains this position and moves along the length direction of the drying box 1. The push plate 31 will not interfere with the lithium carbonate spread on the bottom of the drying box 1. When the hollow rod 23 quickly moves to the end of the stroke away from the reaction box 2, the limit assembly cooperates with the hollow rod 23 again and drives the hollow rod 23 to swing toward the other side of the central axis, thereby driving the movable rod 25 to move, so that the limit wheel 26 slides on the swing rod 30. The movable rod 25 will also drive the limit block 27 to slide in the slot 24 and compress the spring 28. When the limit wheel 26 moves to the center position of the swing rod 30, the spring 28 reaches the maximum compression amount, and the hollow rod 23 continues to rotate, so that the limit wheel 26 moves to the other side of the swing rod 30, and under the action of the spring 28, drives the swing rod 30 to swing toward the other side of the central axis, thereby adjusting the height of the two push plates 31, so that the push plate 31 at the lower position rises and the push plate 31 at the higher position falls.

[0048] See also Figure 4-7A limit assembly connected to the swing mechanism and the swing rod 30 is provided in the drying box 1, and the limit assembly can drive the swing mechanism to move to adjust the angle of the swing rod 30. The limit assembly includes a limit rod 29 fixedly installed on the side of the hollow rod 23 away from the movable rod 25, a limit plate 34 fixedly installed in the drying box 1 and symmetrically arranged, and a No. 1 gear rod 32 and a No. 2 gear rod 33 fixedly installed on the storage box 16 and symmetrically arranged. The No. 1 gear rod 32 abuts against the swing rod 30, and the No. 2 gear rod 33 abuts against the hollow rod 23, and the limit plate 34 cooperates with the limit rod 29.

[0049] Finally, the second gear lever 33 is located on both sides of the central axis and is equidistant from the central axis. The first gear lever 32 is also located on both sides of the central axis. The distance between the first gear lever 32 facing the second motor 20 and the central axis is greater than the distance between the other first gear lever 32 and the central axis. In the initial state, the limit plate 34 abuts against the limit rod 29, so that the hollow rod 23 swings, and stops swinging after the hollow rod 23 swings to the abutment position with the second gear lever 33. Under the action of the limit wheel 26, the swing rod 30 swings to a position away from the central axis. When the storage box 16 transports lithium carbonate and moves to the other side of the drying box 1, the limit plate 34 on the other side of the drying box 1 will abut against the limit rod 29, and the storage box 16 continues to move, so that the hollow rod 23 fixed with the limit rod 29 swings to the other side of the central axis, thereby driving the swing rod 30 to swing to the other side of the central axis and abut against the No. 1 gear rod 32 closer to the central axis. At this time, the swing angle of the swing rod 30 is larger, so that the push plate 31 on the side of the No. 1 gear rod 32 drops to a greater height. The push plate 31 is located at the end of the travel away from the bottom of the drying box 1. In order to fully dry the lithium carbonate, the lithium carbonate needs to be turned over. At this time, the storage box 16 moves toward the reaction box 2, and under the action of the push plate 31, the lithium carbonate spread on the bottom of the drying box 1 is pushed to the direction of the reaction box 2, and the lithium carbonate is located between the two push plates 31. When the storage box 16 moves to the end of the travel, the swing arm 30 swings again to abut against the No. 1 gear lever 32 far away from the central axis, so that the No. 1 gear lever 32 is located at the end of the travel. The push plate 31 on the side moves to a position toward the bottom of the drying box 1, and a certain gap is left with the bottom. The other push plate 31 is located away from the bottom of the drying box 1. At this time, the storage box 16 moves again in the direction away from the reaction box 2, and under the action of the push plate 31, the accumulated lithium carbonate is spread on the bottom of the drying box 1 again. When the storage box 16 moves to the end of the stroke, the spreading of the lithium carbonate is completed, and the positions of the two push plates 31 are changed again to continue drying the lithium carbonate. The above steps are repeated, and after stacking and spreading several times, the lithium carbonate is completely dried.

[0050] Taking the embodiment of the combination of all the features described in this application as an example, when in use, under the action of the cylinder 13, the hinge plate 11 is tightly fitted with the surface of the reaction box 2 through the fixing plate 12, and the protruding part of the hinge plate 11 enters the through groove and fits tightly with the through groove, thereby closing the through groove and sealing the Li 2 SO 4 The solution was placed in the reaction box 2 and heated to 90°C by the resistance heater. At the same time, Na 2 CO 3 Saturated solution, and continuously measure the pH value of the solution during the addition process. 2 CO 3 The addition of saturated solution will react with Li 2 SO 4 The solution reacts and generates lithium carbonate precipitate and Na 2 SO 4 At the same time, in order to speed up the reaction rate and accurately measure the pH of the solution, it is necessary to stir the solution in the reaction box 2. At this time, the No. 1 motor 4 works, driving the stirring rod 5 to rotate, thereby driving the stirring blade 6 to rotate. Under the action of the stirring blade 6, the solution is stirred. When the pH of the mixed solution drops to 9, stop adding Na 2 CO 3Saturated solution, motor 4 continues to work, and stirs the mixed solution for thirty minutes. If the pH of the solution does not change, it means that the reaction is completed. At this time, motor 4 stops working, and the generated lithium carbonate will gradually precipitate and fall onto the sealing plate 10. The cylinder 13 works and drives the hinge plate 11 to rotate a certain angle around the hinge point through the fixed plate 12. Under the action of the filter membrane 9, the remaining solution after the reaction is filtered and discharged through the through groove. The discharged solution will fall into the storage box 3. When the solution is discharged, wet lithium carbonate remains in the reaction box 2. At this time, the lithium carbonate needs to be washed with water. Pure water is added to the reaction box 2, and the water in the reaction box 2 is discharged through the filter membrane 9. After washing several times, the lithium carbonate in the reaction box 2 needs to be discharged. , and transported into the storage box 16. At this time, the cylinder 13 works again, and drives the hinged plate 11 to rotate through the fixed plate 12, so that the arc-shaped rack plate 14 moves. When the arc-shaped rack plate 14 moves to the meshing position with the transverse rack plate 15, under the action of the arc-shaped rack plate 14, the two sealing plates 10 fixed with the transverse rack plate 15 are driven to move toward positions away from each other, so that the lithium carbonate placed on the sealing plate 10 is separated from the reaction box 2 and enters the storage box 16. When the lithium carbonate completely enters the storage box 16, the second motor 20 works at this time, driving the transmission rod 21 to rotate, thereby driving the guide groove 22 to rotate. Under the action of the guide groove 22, the diamond block 19 enters the first threaded groove through the first semi-annular groove, and drives the guide sleeve 18 along The guide rod 17 moves in the length direction, and at the same time, the valve at the bottom of the storage box 16 opens, and the lithium carbonate in the storage box 16 is evenly transported to the bottom of the drying box 1. When the diamond block 19 moves to the connection position of the first thread groove and the second thread groove, due to its diamond shape, the diamond block 19 will not be separated from the first thread groove and moves in the first thread groove, so that the storage box 16 continues to move along the length direction of the guide rod 17, so that the lithium carbonate is evenly spread in the drying box 1. When the lithium carbonate is spread, the diamond block 19 has not yet moved to the second semi-annular groove. When the diamond block 19 enters the second semi-annular groove, the storage box 16 moves to the end of the stroke away from the reaction box 2. At the same time, when the storage box 16 moves, it will also drive the push plate. 31 movement, in the initial state, the limit plate 34 abuts against the limit rod 29, so that the hollow rod 23 swings, and stops swinging after the hollow rod 23 swings to the abutment position with the second gear rod 33, and under the action of the limit wheel 26, the swing rod 30 swings to abut against the first gear rod 32 away from the central axis. When the storage box 16 transports lithium carbonate and moves to the other side of the drying box 1, the limit plate 34 located on the other side of the drying box 1 will abut against the limit rod 29, and the storage box 16 continues to move, so that the hollow rod 23 fixed with the limit rod 29 swings to the other side of the central axis, thereby driving the movable rod 25 to move, so that the limit wheel 26 slides on the swing rod 30, and the movable rod 25 will also drive the limit block 27 to slide in the slot 24 and compress the spring 28.When the limiting wheel 26 moves to the center position of the swing rod 30, the spring 28 reaches the maximum compression, and the hollow rod 23 continues to rotate, so that the limiting wheel 26 moves to the other side of the swing rod 30, and under the action of the spring 28, the swing rod 30 is driven to swing toward the other side of the central axis and abut against the No. 1 gear rod 32 which is closer to the central axis. At this time, the swing angle of the swing rod 30 is larger, so that the push plate 31 located on the side of the No. 1 gear rod 32 drops to a greater height and fits with the surface of the drying box 1. The other push plate 31 is located at the end of the stroke away from the bottom of the drying box 1. In order to fully dry the lithium carbonate, it is necessary to turn over the lithium carbonate. At this time, the storage box 16 moves toward the direction of the reaction box 2, and under the action of the push plate 31, the lithium carbonate spread on the bottom of the drying box 1 is pushed to the reverse The storage box 16 moves to the direction of the reaction box 2, and the lithium carbonate is located between the two push plates 31. When the storage box 16 moves to the end of the stroke, the swing rod 30 swings again to abut against the No. 1 gear lever 32 far away from the central axis, so that the push plate 31 located on the side of the No. 1 gear lever 32 moves to a position toward the bottom of the drying box 1, and a certain gap is left with the bottom. The other push plate 31 is located at a position away from the bottom of the drying box 1. At this time, the storage box 16 moves again in the direction away from the reaction box 2, and under the action of the push plate 31, the accumulated lithium carbonate is spread again on the bottom of the drying box 1. When the storage box 16 moves to the end of the stroke, the lithium carbonate is spread. The positions of the two push plates 31 are changed again, and the lithium carbonate is continued to be dried. The above steps are repeated, and after stacking and spreading several times, the lithium carbonate is completely dried.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lithium carbonate drying device, comprising a drying box (1), a storage box (3) connected to the drying box (1) being fixed on the drying box (1), characterized in that: The lithium carbonate drying device also includes: A reaction box (2) for preparing lithium carbonate and fixedly mounted on the drying box (1), the reaction box (2) having through grooves on both sides, the bottom of the reaction box (2) being a through structure and having a slide groove, a sealing plate (10) symmetrically arranged and used for closing the reaction box (2) being slidably mounted in the slide groove; a stirring assembly, arranged on the reaction box (2), the stirring assembly being capable of stirring the reactants when the reactants are added into the reaction box (2); the reaction box (2) being equipped with a filtering assembly cooperating with the through slot; the reaction box (2) being also equipped with a regulating mechanism connected to the sealing plate (10); the regulating mechanism being capable of switching the closed and open states of the through slot and driving the sealing plate (10) to move towards or away from each other; a storage box (16) arranged in the drying box (1), the storage box (16) being used to contain lithium carbonate and convey lithium carbonate into the drying box (1), the drying box (1) being provided with a reciprocating mechanism connected to the storage box (16), the reciprocating mechanism being capable of driving the storage box (16) to reciprocate along the length direction of the drying box (1); A swing rod (30) is rotatably mounted in the storage box (16) and is symmetrically arranged; a push plate (31) is fixed to the swing rod (30) and is symmetrically arranged; a swing mechanism connected to the swing rod (30) is arranged on the storage box (16); a limit assembly connected to the swing mechanism and the swing rod (30) is arranged in the drying box (1); the limit assembly can drive the swing mechanism to move so as to adjust the angle of the swing rod (30); The filter assembly comprises a limit frame (7) fixedly mounted in the reaction box (2) and symmetrically arranged, a limit clamping plate (8) movably engaged with the limit frame (7), a filter membrane (9) sandwiched between the limit frame (7) and the limit clamping plate (8), and the filter membrane (9) cooperates with the through groove; The regulating mechanism comprises a sealing assembly symmetrically arranged on the reaction box (2), an arc-shaped rack plate (14) fixedly mounted on the sealing assembly and symmetrically arranged, and a transverse rack plate (15) fixedly mounted on the sealing plate (10) and meshing with the arc-shaped rack plate (14), wherein the sealing assembly cooperates with the through groove; The sealing assembly comprises a hinged plate (11) hinged on the reaction box (2) and matched with the through groove, a fixed plate (12) is fixed on the hinged plate (11), a cylinder (13) hinged to the reaction box (2) is hinged on the fixed plate (12), and the hinged plate (11) is fixedly connected to the arc-shaped rack plate (14); The reciprocating mechanism comprises a second motor (20) fixedly mounted on the drying box (1), a transmission rod (21) rotatably mounted in the drying box (1) and connected to an output shaft of the second motor (20), and a guide groove (22) provided on the transmission rod (21); a guide assembly connected to the guide groove (22) is provided in the drying box (1), and the guide assembly is fixedly connected to the storage box (16); The guide assembly comprises a guide rod (17) fixedly mounted in the drying box (1) and symmetrically arranged, a guide sleeve (18) being movably mounted on the guide rod (17), a diamond block (19) being rotatably mounted on the guide sleeve (18) and engaging with the guide groove (22), and the guide sleeve (18) being fixedly connected to the storage box (16); The swing mechanism comprises a hollow rod (23) rotatably mounted on the storage box (16) and symmetrically arranged, a sliding assembly arranged on the storage box (16) and connected to the hollow rod (23), a spring (28) fixedly mounted in the hollow rod (23) and abutting against the sliding assembly, a limiting wheel (26) rotatably mounted on the sliding assembly, the limiting wheel (26) abutting against the swing rod (30), and the hollow rod (23) being connected to the limiting assembly; The sliding assembly comprises a slot (24) provided on the hollow rod (23), a movable rod (25) movably mounted in the hollow rod (23), and a limit block (27) fixedly mounted on the movable rod (25) and engaged with the slot (24); the movable rod (25) abuts against the spring (28) and is rotationally connected to the limit wheel (26); The limiting assembly comprises a limiting rod (29) fixedly mounted on a side of the hollow rod (23) away from the movable rod (25), a limiting plate (34) fixedly mounted in the drying box (1) and symmetrically arranged, and a first gear rod (32) and a second gear rod (33) fixedly mounted on the storage box (16) and symmetrically arranged, wherein the first gear rod (32) abuts against the swing rod (30), the second gear rod (33) abuts against the hollow rod (23), and the limiting plate (34) cooperates with the limiting rod (29).

2. A lithium carbonate drying device according to claim 1, characterized in that, The stirring assembly comprises a first motor (4) fixedly mounted on the reaction box (2), a stirring rod (5) connected to an output shaft of the first motor (4) rotatably mounted in the reaction box (2), and a plurality of groups of stirring blades (6) equidistantly arranged in a circle are fixed on the stirring rod (5).

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