Lithium hydroxide drying device and battery production equipment

Abstract

The utility model provides a lithium hydroxide drying device and battery production equipment. The lithium hydroxide drying device comprises a supporting base, a drying mechanism and a collecting mechanism. The drying mechanism comprises a rotating platform, a cover body, an upper cover, a rotating driving part and a heating part, the rotating driving part is installed in the supporting base and provided with an output shaft, the output shaft is fixedly connected with the rotating platform, the cover body is fixedly connected with the supporting base, the cover body is covered with the upper cover, and the heating part is fixedly connected with the rotating platform. The cover body, the rotating platform and the upper cover jointly form a heating cavity, and the heating piece is located in the heating cavity and connected with the upper cover. The collecting mechanism comprises a collecting box and a collecting pipe, the collecting box is installed on the supporting base, and the collecting box communicates with the heating cavity through the collecting pipe. The lithium hydroxide is prevented from being in contact with air before entering the collecting box, so that the purity and the reaction activity of the lithium hydroxide are relatively good.

Description

Technical Field

[0001] The present disclosure relates to the field of lithium hydroxide, and in particular to a lithium hydroxide drying device and battery production equipment. Background Art

[0002] Lithium hydroxide is an important material required in battery production. Since lithium hydroxide has strong hygroscopicity, if lithium hydroxide is exposed to humid air, it will absorb moisture and form hydrates, thereby reducing its purity and reactivity. Therefore, drying lithium hydroxide is beneficial to improve its chemical stability and storage life.

[0003] In the prior art, a common drying method is to place lithium hydroxide in a container for vacuum drying or hot air drying. For example, a Chinese patent with application number CN202310165558.4 discloses a rotary drying furnace for drying lithium hydroxide, including a tank body, a feeding member, and a discharging member; a copying plate is provided in the tank body along its circumferential interval, and a material guide member is provided in the tank body, and the material guide member has a material guide surface; wherein the material guide member forms an air passage, and / or the material guide member and the inner wall of the tank body form an air passage; the drying system includes the above-mentioned rotary drying furnace, a dust removal member, a water removal member, and a heating member, the exhaust part is connected to the dust removal member, the outlet end of the dust removal member is connected to the water removal member, the outlet end of the water removal member is connected to the heating member, and the heating member is connected to the air intake part.

[0004] However, the structural design of the above rotary drying furnace has the following problems during use:

[0005] After the lithium hydroxide is dried in the rotary drying furnace, it needs to be transported to a container for storage via a conveyor belt or manual handling. However, during the transportation, the lithium hydroxide will inevitably come into contact with water or carbon dioxide in the air, resulting in poor purity and reaction activity of the lithium hydroxide.

[0006] Therefore, there is an urgent need for a device that integrates drying and storage and reduces the contact between lithium hydroxide and air. Utility Model Content

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a lithium hydroxide drying device and battery production equipment that integrates drying and storage and reduces the contact between lithium hydroxide and air.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] A lithium hydroxide drying device, comprising:

[0010] Support base;

[0011] A drying mechanism, the drying mechanism comprising a rotating platform, a cover, an upper cover, a rotating driving member and a heating member, the rotating driving member being installed in the supporting base, the rotating driving member having an output shaft, the output shaft being fixedly connected to the rotating platform, the cover being fixedly connected to the supporting base, the upper cover being arranged on the cover, the cover, the rotating platform and the upper cover jointly forming a heating chamber, the heating member being located in the heating chamber and connected to the upper cover;

[0012] The collecting mechanism comprises a collecting box and a collecting pipe, wherein the collecting box is installed on the supporting base, the collecting box is provided with a first avoiding hole, the cover body is provided with a second avoiding hole, the second avoiding hole and the rotating platform are located on the same horizontal plane, and both ends of the collecting pipe are respectively located in the first avoiding hole and the second avoiding hole.

[0013] In one embodiment, the rotating platform is provided with a plurality of arcuate grooves arranged at intervals, and the plurality of arcuate grooves are arranged on the rotating platform, and each of the arcuate grooves extends from the center of the rotating platform to the edge of the rotating platform.

[0014] In one embodiment, a central axis is provided at the center of the rotating platform, the central axis is connected to the output shaft of the rotating driving member, and each of the arc-shaped grooves extends from the central axis to the edge of the rotating platform.

[0015] In one embodiment, the upper cover includes an upper cover body, a feed cover and an air cover, the upper cover body is covered on the cover body, the upper cover body is provided with a feed port, the feed cover is embedded in the feed port, the feed cover is provided with an air hole, and the air cover is embedded in the air hole.

[0016] In one embodiment, the upper cover body is plugged into the cover body, a sealing ring is provided at the periphery of the upper cover body, and the sealing ring abuts against the cover body.

[0017] In one embodiment, the collection box includes a box body and a valve. The box body is installed on the support base. The box body is provided with a sliding guide groove. The valve is located in the sliding guide groove and is slidably connected to the box body.

[0018] In one of the embodiments, a sliding slope is provided on the bottom of the box.

[0019] In one of the embodiments, a ventilation valve is provided on the collection mechanism.

[0020] In one embodiment, there are multiple collecting mechanisms, and the multiple collecting mechanisms are arranged around the supporting base.

[0021] A battery production equipment comprises the lithium hydroxide drying device described in any one of the above embodiments.

[0022] Compared with the prior art, the present invention has at least the following advantages:

[0023] In the above-mentioned lithium hydroxide drying device, after lithium hydroxide is placed in the heating chamber, the heating element heats and dries the lithium hydroxide so that the water in the lithium hydroxide is evaporated. After drying, the rotating driving element drives the rotating platform to rotate. At this time, the lithium hydroxide on the rotating platform rotates together. When the lithium hydroxide rotates to the edge of the rotating platform under the action of the rotating force, it enters the collection pipe through the second avoidance hole and then falls into the collection box. In this way, the lithium hydroxide is prevented from contacting with the air before entering the collection box, so that the purity and reaction activity of the lithium hydroxide are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of a lithium hydroxide drying device according to an embodiment;

[0026] Figure 2 for Figure 1 Another structural schematic diagram of the lithium hydroxide drying device shown;

[0027] Figure 3 for Figure 1 A schematic structural diagram of an upper cover of a lithium hydroxide drying device shown;

[0028] Figure 4 for Figure 1 A schematic structural diagram of a collecting mechanism of a lithium hydroxide drying device shown;

[0029] Figure 5 for Figure 1 Another structural schematic diagram of the lithium hydroxide drying device shown;

[0030] Figure 6 for Figure 1 Another structural schematic diagram of the lithium hydroxide drying device shown.

[0031] Figure markings: 10-lithium hydroxide drying device; 100-support base; 200-drying mechanism; 300-collecting mechanism; 210-rotating platform; 220-cover; 230-upper cover; 240-rotating drive member; 250-heating member; 310-collecting box; 320-collecting tube; 211-arc groove; 212-center axis; 231-upper cover body; 232-feeding cover; 233-air cover; 231a-feeding port; 232a-air hole; 231b-sealing ring; 311-box; 312-valve; 313-sliding slope; 310a-first avoidance hole; 220a-second avoidance hole; 241-output shaft. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0033] It should be noted that when an element is referred to as being "fixed to" 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 do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0036] like Figures 1 to 6As shown, a lithium hydroxide drying device 10 of an embodiment includes a support base 100, a drying mechanism 200 and a collecting mechanism 300, wherein the drying mechanism 200 includes a rotating platform 210, a cover body 220, an upper cover 230, a rotating driving member 240 and a heating member 250, wherein the rotating driving member 240 is installed in the support base 100, and the rotating driving member 240 has an output shaft 241, wherein the output shaft 241 is fixedly connected to the rotating platform 210, the cover body 220 is fixedly connected to the support base 100, the upper cover 230 is covered on the cover body 220, the cover body 220, the rotating platform 210 and the upper cover 230 jointly form a heating chamber, the heating member 250 is located in the heating chamber and connected to the upper cover 230, so that the rotating driving member 240 drives the rotating platform 210 to rotate, and the heating member 250 dries the lithium hydroxide in the heating chamber.

[0037] Furthermore, the collecting mechanism 300 includes a collecting box 310 and a collecting pipe 320. The collecting box 310 is installed on the supporting base 100. The collecting box 310 is provided with a first avoiding hole 310a. The cover body 220 is provided with a second avoiding hole 220a. The second avoiding hole 220a and the rotating platform 210 are located on the same horizontal plane. Both ends of the collecting pipe 320 are respectively located in the first avoiding hole 310a and the second avoiding hole 220a, so that the collecting box 310 is connected with the heating chamber through the collecting pipe 320.

[0038] In this embodiment, the rotating platform 210 is fixedly connected to the output shaft 241 so that the rotating driving member 240 drives the rotating platform 210 to rotate. After the lithium hydroxide enters the heating chamber, the heating member 250 works to increase the temperature in the heating chamber, thereby evaporating the water in the lithium hydroxide. After drying, the rotating driving member 240 drives the rotating platform 210 to rotate, and the lithium hydroxide on the rotating platform 210 rotates together. When the lithium hydroxide rotates to the edge of the rotating platform 210, it enters the collection tube 320 through the second avoidance hole 220a on the same horizontal plane as the rotating platform 210, and falls into the collection box 310 by gravity for storage. Further, the rotating driving member 240 is a motor, and the heating member 250 is a heating rod or a heater.

[0039] Furthermore, the upper cover 230 is provided with an air hole 232a. When the heating element 250 finishes heating the lithium hydroxide, an inert gas is introduced through the air hole 232a, and the rotating driving element 240 is started to drive the rotating platform 210 to rotate. Under the combined action of high pressure and rotating centrifugal force, the lithium hydroxide passes through the collecting tube 320 and enters the collecting box 310.

[0040] In the lithium hydroxide drying device 10, after lithium hydroxide is placed in the heating chamber, the heating element 250 heats and dries the lithium hydroxide so that the water in the lithium hydroxide is evaporated. After drying, the rotating driving element 240 drives the rotating platform 210 to rotate. At this time, the lithium hydroxide on the rotating platform 210 rotates together. When the lithium hydroxide rotates to the edge of the rotating platform 210 under the action of the rotating force, it enters the collecting pipe 320 through the second avoiding hole 220a, and then falls into the collecting box 310. In this way, the lithium hydroxide is prevented from contacting with the air before entering the collecting box 310, so that the purity and reaction activity of the lithium hydroxide are better.

[0041] like Figure 2 As shown, in one embodiment, the rotating platform 210 is provided with a plurality of arc grooves 211 arranged at intervals, and the plurality of arc grooves 211 are arranged on the rotating platform 210 , and each of the arc grooves 211 extends from the center of the rotating platform 210 to the edge of the rotating platform 210 .

[0042] It can be understood that after the lithium hydroxide enters the heating chamber, part of it is located on the rotating platform 210 and part of it is located in the arc groove 211. The dried lithium hydroxide is rotated under the drive of the rotating drive member 240, and the lithium hydroxide in the arc groove 211 is transported along the groove wall of the arc groove 211 to the edge of the rotating platform 210, and then enters the collecting tube 320 through the second avoidance hole 220a. That is, the design of the arc groove 211 can make the transportation of lithium hydroxide to the edge of the rotating platform 210 more efficient.

[0043] like Figure 2 As shown, in one embodiment, a central shaft 212 is provided at the center of the rotating platform 210 , and the central shaft 212 is connected to the output shaft of the rotating driving member 240 , and each of the arc-shaped grooves 211 extends from the central shaft 212 to the edge of the rotating platform 210 .

[0044] It can be understood that the output shaft of the rotating drive member 240 is connected to the central shaft 212, so that when the output shaft of the rotating drive member 240 rotates, the central shaft 212 drives the rotating platform 210 to rotate, and the arc groove 211 extends from the central shaft 212 to the edge of the rotating platform 210, so that the area of ​​the arc groove 211 is larger and the efficiency of transporting lithium hydroxide is higher.

[0045] like Figure 3 As shown, in one embodiment, the upper cover 230 includes an upper cover body 231, a feed cover 232 and an air cover 233, the upper cover body 231 is covered on the cover body 220, the upper cover body 231 is provided with a feed port 231a, the feed cover 232 is embedded in the feed port 231a, the feed cover 232 is provided with an air hole 232a, and the air cover 233 is embedded in the air hole 232a.

[0046] It can be understood that the feed cover 232 is embedded in the feed port 231a so that the feed cover 232 can be detachably connected to the feed port 231a, that is, when lithium hydroxide is placed in the heating chamber, the feed cover 232 is removed to allow the lithium hydroxide to enter the heating chamber through the feed port 231a, and the feed cover 232 is embedded in the feed port 231a after the feeding is completed. Further, the air hole 232a of the feed cover 232 is used to add inert gas through the air hole 232a when the lithium hydroxide is dried to prevent the lithium hydroxide from carbonizing during the drying process, and the air cover 233 is embedded in the air hole 232a after the drying is completed.

[0047] like Figure 1 and Figure 3 As shown, in one embodiment, the upper cover body 231 is inserted into the cover body 220 , and a sealing ring 231 b is provided at the periphery of the upper cover body 231 , and the sealing ring 231 b abuts against the cover body 220 .

[0048] In this embodiment, the upper cover body 231 is plugged into the cover body 220 so that the upper cover body 231 can be detachably connected to the cover body 220. When the internal part of the device needs to be repaired, the upper cover body 231 and the cover body 220 are disassembled, and after the repair is completed, the upper cover body 231 and the cover body 220 are docked. Further, a sealing ring 231b is provided at the periphery of the upper cover body 231, that is, when the upper cover body 231 is plugged into the cover body 220, the sealing ring 231b abuts against the cover body 220, so that the sealing between the upper cover body 231 and the cover body 220 is better.

[0049] like Figure 4 As shown, in one embodiment, the collection box 310 includes a box body 311 and a valve 312. The box body 311 is installed on the support base 100. The box body 311 is provided with a sliding guide groove. The valve 312 is located in the sliding guide groove and is slidably connected to the box body 311.

[0050] It can be understood that the dried lithium hydroxide enters the collection box 310. When the lithium hydroxide needs to be taken out, the valve 312 is slid upward, and then the valve 312 is slid downward and closed after the lithium hydroxide is taken out. This makes the operation of taking out the lithium hydroxide more convenient.

[0051] like Figure 4 As shown, in one embodiment, a sliding slope 313 is provided at the bottom of the box 311 .

[0052] It can be understood that lithium hydroxide accumulates in the collection box 310. When the valve 312 is opened, the lithium hydroxide slides out from the sliding slope 313 more quickly due to the combined effect of gravity and the guiding effect of the sliding slope 313, so that the lithium hydroxide removal operation speed is faster, thereby ensuring that the lithium hydroxide has less contact with the air.

[0053] In one embodiment, the cover body 220 is a quartz glass cover body 220 .

[0054] In this embodiment, the cover 220 is made of quartz glass, so that the staff can observe the internal situation of the device through the quartz glass cover 220, and due to the high temperature resistance of quartz glass, that is, when the heating element 250 is heated, the high temperature will not affect the quartz glass cover 220. Of course, in other embodiments, the cover 220 can also be made of other transparent materials such as ceramics.

[0055] like Figure 1 As shown, in one embodiment, there are multiple collecting mechanisms 300 , and the multiple collecting mechanisms 300 are arranged around the supporting base 100 .

[0056] It can be understood that each collecting mechanism 300 is connected to the heating chamber. When the rotating platform 210 rotates, the lithium hydroxide in the heating chamber randomly enters one of the collecting boxes 310 under the action of the rotating force, so that the lithium hydroxide in the heating chamber is transferred into the collecting box 310 faster.

[0057] In one embodiment, a vent valve is provided on the collecting mechanism 300 to stabilize the pressure in the collecting mechanism 300 .

[0058] The present application also provides a battery production device, comprising the lithium hydroxide drying device 10 described in any of the above embodiments.

[0059] Compared with the prior art, the present invention has at least the following advantages:

[0060] In the lithium hydroxide drying device 10, after lithium hydroxide is placed in the heating chamber, the heating element 250 heats and dries the lithium hydroxide so that the water in the lithium hydroxide is evaporated. After drying, the rotating driving element 240 drives the rotating platform 210 to rotate. At this time, the lithium hydroxide on the rotating platform 210 rotates together. When the lithium hydroxide rotates to the edge of the rotating platform 210 under the action of the rotating force, it enters the collecting pipe 320 through the second avoiding hole 220a, and then falls into the collecting box 310. In this way, the lithium hydroxide is prevented from contacting with the air before entering the collecting box 310, so that the purity and reaction activity of the lithium hydroxide are better.

[0061] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A lithium hydroxide drying device (10), characterized in that: include: Support base (100); A drying mechanism (200), the drying mechanism (200) comprising a rotating platform (210), a cover (220), an upper cover (230), a rotating driving member (240) and a heating member (250), the rotating driving member (240) being installed in the supporting base (100), the rotating driving member (240) having an output shaft (241), the output shaft (241) being fixedly connected to the rotating platform (210), the cover (220) being fixedly connected to the supporting base (100), the upper cover (230) being covered on the cover (220), the cover (220), the rotating platform (210) and the upper cover (230) jointly forming a heating chamber, the heating member (250) being located in the heating chamber and connected to the upper cover (230); A collecting mechanism (300), the collecting mechanism (300) comprising a collecting box (310) and a collecting pipe (320), the collecting box (310) being mounted on the supporting base (100), the collecting box (310) being provided with a first avoiding hole (310a), the cover body (220) being provided with a second avoiding hole (220a), the second avoiding hole (220a) and the rotating platform (210) being located on the same horizontal plane, and two ends of the collecting pipe (320) being respectively located in the first avoiding hole (310a) and the second avoiding hole (220a).

2. The lithium hydroxide drying device (10) according to claim 1, characterized in that: The rotating platform (210) is provided with a plurality of arc-shaped grooves (211) arranged at intervals. The plurality of arc-shaped grooves (211) are arranged on the rotating platform (210), and each arc-shaped groove (211) extends from the center of the rotating platform (210) to the edge of the rotating platform (210).

3. The lithium hydroxide drying device (10) according to claim 2, characterized in that: A central shaft (212) is provided at the center of the rotating platform (210), and the central shaft (212) is connected to the output shaft of the rotating driving member (240). Each of the arc-shaped grooves (211) extends from the central shaft (212) to the edge of the rotating platform (210).

4. The lithium hydroxide drying device (10) according to claim 1, characterized in that: The upper cover (230) comprises an upper cover body (231), a feed cover (232) and an air cover (233); the upper cover body (231) is covered on the cover body (220); the upper cover body (231) is provided with a feed port (231a); the feed cover (232) is embedded in the feed port (231a); the feed cover (232) is provided with an air hole (232a); and the air cover (233) is embedded in the air hole (232a).

5. The lithium hydroxide drying device (10) according to claim 4, characterized in that: The upper cover body (231) is plugged into the cover body (220), and a sealing ring (231b) is provided at the periphery of the upper cover body (231), and the sealing ring (231b) abuts against the cover body (220).

6. The lithium hydroxide drying device (10) according to claim 1, characterized in that: The collection box (310) comprises a box body (311) and a valve (312); the box body (311) is installed on the support base (100); a sliding guide groove is provided on the box body (311); the valve (312) is located in the sliding guide groove and is slidably connected to the box body (311).

7. The lithium hydroxide drying device (10) according to claim 6, characterized in that: The bottom of the box body (311) is provided with a sliding slope (313).

8. The lithium hydroxide drying device (10) according to claim 1 or 6, characterized in that: The collecting mechanism (300) is provided with a ventilation valve.

9. The lithium hydroxide drying device (10) according to claim 1, characterized in that: There are multiple collection mechanisms (300), and the multiple collection mechanisms (300) are arranged around the support base (100).

10. A battery production device, characterized in that: It comprises the lithium hydroxide drying device (10) according to any one of claims 1 to 9.

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