Dehumidifying device suitable for lithium chloride production

Abstract

The utility model provides a dehumidification device suitable for lithium chloride production. The dehumidification device comprises a dehumidification tank arranged above a disc dryer and a rotating assembly arranged in the middle of the dehumidification tank. The dehumidification tank comprises an outer cover with an inner cavity and an inner cylinder arranged in the inner cavity in a spaced mode, the inner cylinder is provided with a containing cavity, and the rotating assembly is arranged in the containing cavity. The inner barrel is provided with a heating part and a plurality of through circulation parts, and the outer cover is provided with a ventilation part connected with an air blower. A feeding port is formed in the upper portion of the dehumidification tank, and a discharging port connected with the disc dryer is formed in the lower portion of the dehumidification tank. The rotating assembly is used for conveying the lithium chloride raw material from the feeding port to the discharging port. According to the utility model, the drying uniformity of the lithium chloride raw material is improved, the raw material can be pre-dried before entering the disc dryer, the phenomenon of local overheating caused by direct drying of the lithium chloride raw material with poor flowability on the disc dryer is prevented, and the use performance of the lithium chloride drying agent is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium chloride production equipment, and in particular to a dehumidification device suitable for lithium chloride production. Background Technology

[0002] The dehumidification principle of lithium chloride in packaging mainly relies on its own chemical properties. Chloride ions and lithium ions have a strong affinity for water molecules. When the ambient humidity is high, it can effectively reduce the humidity inside the packaging, prevent the goods from getting damp and moldy, and thus protect the quality and safety of the goods.

[0003] In the production process, lithium chloride needs to be dried in a disc dryer before use. Wet material is continuously added to the dryer via a feeder, and the rake arms rotate with the main shaft, continuously agitating the material. The material flows along an exponential spiral path across the surface of the drying discs, and the dried material falls from the last drying disc to the discharge port. However, in existing technologies, because lithium chloride is a white, loose powder with poor flowability, directly feeding the lithium chloride raw material obtained from a centrifuge into the disc dryer can easily cause agglomeration, resulting in uneven material distribution and making it impossible to guarantee the uniformity of material powder drying.

[0004] In addition, the drying temperature control requirements of the disc dryer are high. If the temperature control is not proper, the material may overheat. Under high temperature conditions, by-products will accumulate, increasing the proportion of rock salt phase, increasing the internal resistance of the battery, and causing the drying performance of lithium chloride products to decline. Utility Model Content

[0005] In view of this, the present invention aims to provide a dehumidification device suitable for lithium chloride production, so as to ensure uniform heating during lithium chloride drying, avoid overheating, and improve the drying performance of lithium chloride desiccant.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A dehumidification device suitable for lithium chloride production includes a dehumidification tank located above a disc dryer, and a rotating assembly located in the middle of the dehumidification tank.

[0008] The dehumidifier includes an outer cover with an inner cavity and an inner cylinder spaced apart from the inner cavity. The inner cylinder has a receiving cavity, and the rotating assembly is disposed in the receiving cavity.

[0009] The inner cylinder is provided with a heating section, and the inner cylinder is provided with several through-flow sections. The outer cover is provided with a ventilation section connected to a blower.

[0010] The dehumidifier has a feed inlet at the top and a discharge outlet at the bottom that is connected to the disc dryer.

[0011] The rotating assembly is used to transport lithium chloride raw material from the inlet to the outlet.

[0012] Furthermore, the heating part adopts a heating tube, which is spirally arranged from top to bottom along the inner wall of the inner cylinder.

[0013] Furthermore, the flow section includes a plurality of through holes formed on the inner cylinder, and the through holes are arranged alternately with the heating tube.

[0014] Furthermore, the rotating assembly includes a drive unit located above the dehumidification tank, a rotating shaft connected to the power output end of the drive unit, and a spiral conveyor disc located on the rotating shaft.

[0015] The rotating shaft and the spiral conveyor disc are located inside the receiving cavity and extend along the height direction of the inner cylinder.

[0016] Furthermore, the dehumidifier tank is provided with a sealing plate at the top, and a bearing seat with an upward opening is connected to the sealing plate. The bearing seat is sleeved on the rotating shaft, and a cover plate is provided on the bearing seat.

[0017] Furthermore, the dehumidifier includes a cylindrical section and a conical section, the conical section having a gradually decreasing taper from top to bottom, and the receiving cavity having a radially arranged support plate located at the conical section, the support plate having an annular discharge port formed thereon;

[0018] The discharge port is connected to the conical section.

[0019] Furthermore, the inner cylinder is provided with a fluidizer at the conical section, the fluidizer is fixed to the dehumidification tank by bolts, and the fluidizer is located inside the receiving cavity.

[0020] Furthermore, a flow guide is provided on the feed inlet, and a transmission assembly is provided between the dehumidification tank and the centrifuge, with the outlet of the transmission assembly located inside the flow guide.

[0021] Furthermore, the air guide shroud is also provided with an upwardly protruding air outlet pipe.

[0022] Furthermore, the disc dryer is provided with a bracket for supporting the dehumidification tank, the conical section is connected to the bracket, and the inlet of the disc dryer is connected to the outlet.

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] The dehumidification device for lithium chloride production described in this utility model consists of an outer cover and an inner cylinder. A heating element is installed in the inner cylinder, and a ventilation element connected to an external blower is installed in the outer cover. The inner cylinder has several flow sections. Lithium chloride raw material with a certain humidity output from a centrifuge enters through the inlet and is conveyed through the rotating component to exit through the outlet. During the conveying process, the blower sends air into the cavity between the outer cover and the inner cylinder to avoid the blower directly acting on the powdered raw material, which would cause the raw material to be carried away by the air and result in material loss.

[0025] Meanwhile, the air from the blower blows through the ventilation section and over the heating section, allowing hot air to pass over the raw material being conveyed. The hot air enters the containment cavity radially and gradually becomes vertically flowing due to the rotating components, making the temperature uniform throughout the containment cavity. This facilitates the evaporation of humid air in the raw material, improves the uniformity of lithium chloride drying, and allows for pre-drying of the raw material before it enters the disc dryer. This prevents localized overheating caused by direct drying of poorly flowing lithium chloride raw material on the disc dryer, ensuring the performance of the lithium chloride desiccant. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structural layout of the dehumidification device suitable for lithium chloride production as described in an embodiment of this utility model;

[0028] Figure 2 for Figure 1 A magnified view of a section at point I;

[0029] Figure 3 for Figure 1 A magnified view of section II in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Tray dryer; 2. Dehumidifier tank; 3. Rotary assembly; 4. Heating unit; 5. Bearing housing; 6. Cover plate; 7. Support plate; 8. Discharge port; 9. Fluidizer; 10. Flow guide hood; 11. Conveying assembly; 12. Air outlet duct; 13. Support frame; 14. Centrifuge;

[0032] 201. Outer casing; 202. Inner cylinder; 203. Receiving cavity; 204. Feed inlet; 205. Discharge outlet; 206. Sealing plate;

[0033] 301. Drive unit; 302. Rotary shaft; 303. Spiral conveyor disc;

[0034] 2011, Ventilation Department;

[0035] 2021, Circulation Department. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] This embodiment relates to a dehumidification device suitable for lithium chloride production. In terms of overall structure, as follows... Figure 1 As shown, the dehumidification device includes a dehumidification tank 2 positioned above the coil dryer 1, and a rotating assembly 3 located in the middle of the dehumidification tank 2. The dehumidification tank 2 includes an outer casing 201 with an inner cavity, and an inner cylinder 202 spaced apart within the inner cavity. The inner cylinder 202 has a receiving cavity 203, and the rotating assembly 3 is located within the receiving cavity 203. The inner cylinder 202 is provided with a heating element 4 and several through-flow sections 2021. The outer casing 201 is provided with a ventilation section 2011 connected to a blower. An inlet 204 is located at the top of the dehumidification tank 2, and an outlet 205 connected to the coil dryer 1 is located at the bottom of the dehumidification tank 2. The rotating assembly 3 is used to transport lithium chloride raw material from the inlet 204 to the outlet 205.

[0041] As described above, the dehumidification device for lithium chloride production in this embodiment is designed with a dehumidification tank 2 consisting of an outer cover 201 and an inner cylinder 202. A heating element 4 is provided in the inner cylinder 202, and a ventilation element 2011 connected to an external blower is provided in the outer cover 201. The inner cylinder 202 is provided with several flow sections 2021. Lithium chloride raw material with a certain humidity output from the centrifuge enters from the inlet and is conveyed by the rotating component 3 and output from the outlet 205. During the conveying process, the blower sends air into the cavity between the outer cover 201 and the inner cylinder 202 to avoid the blower directly acting on the powder raw material, which would cause the raw material to be carried away by the air and result in material loss.

[0042] Meanwhile, the air from the blower blows through the ventilation section 2011 and over the heating section 4, enabling hot air to pass over the raw material being conveyed. The hot air enters the receiving cavity 203 radially and gradually becomes vertically flowing due to the arrangement of the rotating component 3, making the temperature uniform throughout the receiving cavity 203. This facilitates the evaporation of humid air in the raw material, improves the uniformity of lithium chloride drying, and allows for pre-drying of the raw material before it enters the disc dryer 1. This prevents localized overheating caused by the direct drying of poorly flowing lithium chloride raw material on the disc dryer 1, ensuring the performance of the lithium chloride desiccant.

[0043] Based on the above overall description, this embodiment presents an exemplary structure of a dehumidification device suitable for lithium chloride production, such as... Figure 1 As shown, the dehumidifier tank 2 is formed into a rotating structure. Preferably, the coil dryer 1 is provided with a bracket 13 for supporting the dehumidifier tank 2, and the conical section described below is connected to the bracket 13. The inlet and outlet 205 of the coil dryer 1 are connected. The conical section and the bracket 13 are fixedly connected by bolts.

[0044] As a preferred embodiment, it is still as follows Figure 1 As shown, the heating section 4 uses heating tubes, which are spirally arranged from top to bottom along the inner wall of the inner cylinder 202. Secondary waste heat steam from the evaporator in the lithium chloride production system is introduced into the heating tubes, which reduces energy consumption, recycles energy, and lowers production costs. The inner cylinder 202 is equipped with clips for fixing the heating tubes; these clips are detachably connected inside the inner cylinder 202.

[0045] In addition, as Figure 1 As shown, the circulation section 2021 includes a plurality of through holes formed on the inner cylinder 202, which are staggered vertically with the heating tubes. The through holes can be arranged at intervals along the arrangement of the heating tubes, and the through holes are located near the heating tubes to allow air to enter from the vicinity of the heating tubes, thereby improving heating efficiency.

[0046] Preferably, continue as follows Figure 1As shown, the rotating assembly 3 includes a drive unit 301 located above the dehumidification tank 2, a rotating shaft 302 connected to the power output end of the drive unit 301, and a spiral conveyor disk 303 mounted on the rotating shaft 302. The rotating shaft 302 and the spiral conveyor disk 303 are located within the receiving cavity 203 and extend along the height direction of the inner cylinder 202. In this embodiment, the drive unit 301 uses a servo motor with a speed reducer. A driving bevel gear is connected to the power output shaft of the drive unit 301, and a driven bevel gear meshes with the driving bevel gear on the rotating shaft 302 to facilitate the lateral placement of the drive unit 301 and reduce the overall height of the device.

[0047] Specifically, such as Figure 1 As shown, the dehumidifier tank 2 has a sealing plate 206 on its upper part, and a bearing seat 5 with an upward opening is connected to the sealing plate 206. The bearing seat 5 is sleeved on the rotating shaft 302, and a cover plate 6 is provided on the bearing seat 5. The sealing plate 206 is fixedly connected to the outer cover 201 and the inner cylinder 202, and can be fixed by welding. The bearing seat 5 is located in the middle of the sealing plate 206. The inner hole of the bearing seat 5 is adapted to the upper part of the rotating shaft 302. The cover plate 6 seals the opening of the bearing seat 5 to prevent dust from causing the bearing to jam and affecting the rotational flexibility of the screw conveyor disc 303.

[0048] As Figure 1 As shown, the outer diameter of the spiral conveyor disc 303 is smaller than the inner diameter of the inner cylinder 202, and there is a flow gap between them to allow hot air to dissipate along the axial direction, ensuring uniform temperature in the accommodating cavity 203 of the inner cylinder 202, thereby improving the drying effect of the raw materials.

[0049] Preferably, as Figure 1 As shown, the dehumidifier tank 2 includes a cylindrical section and a conical section. The conical section has a gradually decreasing taper from top to bottom. A radially arranged support plate 7 is located at the conical section of the receiving cavity 203. An annular discharge port 8 is formed on the support plate 7, and the discharge port 205 is connected to the conical section. The conical section facilitates connection to the inlet of the disc dryer 1, and the annular discharge port 8 ensures the passage of outgoing powder while preventing the outflow of powder with poor flowability. Powder with poor flowability indicates higher moisture content. Driven by the continuously rotating spiral conveyor disc 303, the powder continues to heat within the inner cylinder 202 until it becomes leakable powder that flows to the discharge port 205.

[0050] Continue as Figure 1 As shown, a bearing seat 5 is also provided in the middle of the support plate 7 to support the lower end of the rotating shaft 302. A cover plate 6 is provided on the bearing seat 5 to seal the opening, prevent dust from causing the bearing to jam, and ensure the rotational flexibility of the spiral conveyor disc 303 and the rotating shaft 302.

[0051] In addition, to prevent raw material accumulation in the conical section, a fluidizer 9 is provided in the conical section of the inner cylinder 202. The fluidizer 9 is fixed to the dehumidification tank 2 by bolts and is located inside the receiving cavity 203. In this embodiment, two opposing fluidizers 9 are provided to prevent bridging of raw materials during the discharge process and to ensure that the raw materials can be discharged smoothly.

[0052] like Figure 1 As shown, in this embodiment, a flow guide shroud 10 is provided on the feed inlet 204, and a transmission assembly 11 is provided between the dehumidification tank 2 and the centrifuge. The outlet of the transmission assembly 11 is located inside the flow guide shroud 10. In lithium chloride production, although some moisture is removed after centrifugation, due to its strong hygroscopic properties, it will still absorb moisture from the surrounding environment, resulting in high humidity. The transmission assembly 11 facilitates material transport between the centrifuge and the dehumidification tank 2. Specifically, the transmission assembly 11 is a skirted belt conveyor.

[0053] A guide hood 10 is installed at the feed inlet 204 to prevent material from flying when it enters the feed inlet 204 from the belt conveyor. This not only avoids pollution of the production environment but also reduces material loss.

[0054] In addition, such as Figure 1 As shown, the guide shroud 10 is also provided with an upwardly protruding air outlet pipe 12. By setting the air outlet pipe 12 on the upper part of the guide shroud 10, the hot steam of the inner cylinder 202 can be discharged from the air outlet pipe 12, and the material can also be baked by hot air when it leaves the conveyor belt, which plays a preheating role.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dehumidification device suitable for lithium chloride production, characterized in that: It includes a dehumidification tank (2) located above the dehumidifier (1) and a rotating assembly (3) located in the middle of the dehumidification tank (2); The dehumidifier (2) includes an outer cover (201) with an inner cavity and an inner cylinder (202) spaced apart from the inner cavity. The inner cylinder (202) has a receiving cavity (203), and the rotating assembly (3) is disposed in the receiving cavity (203). The inner cylinder (202) is provided with a heating part (4), and the inner cylinder (202) is provided with a plurality of through flow parts (2021). The outer cover (201) is provided with a ventilation part (2011) connected to a blower. The dehumidifier (2) is provided with a feed inlet (204) at the top and a discharge outlet (205) connected to the disc dryer (1) at the bottom. The rotating component (3) is used to transport lithium chloride raw material from the feed port (204) to the discharge port (205).

2. The dehumidification device for lithium chloride production according to claim 1, characterized in that: The heating part (4) adopts a heating tube, which is spirally arranged from top to bottom along the inner wall of the inner cylinder (202).

3. The dehumidification device for lithium chloride production according to claim 2, characterized in that: The circulation section (2021) includes a plurality of through holes formed on the inner cylinder (202), and the through holes are arranged alternately with the heating tube.

4. The dehumidification device for lithium chloride production according to claim 3, characterized in that: The rotating assembly (3) includes a drive unit (301) located above the dehumidification tank (2), a rotating shaft (302) connected to the power output end of the drive unit (301), and a spiral conveyor disc (303) located on the rotating shaft (302). The rotating shaft (302) and the spiral conveying disc (303) are located in the receiving cavity (203) and extend along the height direction of the inner cylinder (202).

5. The dehumidification device for lithium chloride production according to claim 4, characterized in that: The dehumidifier (2) is provided with a sealing plate (206) on the upper part. A bearing seat (5) with an upward opening is connected to the sealing plate (206). The bearing seat (5) is sleeved on the rotating shaft (302), and a cover plate (6) is provided on the bearing seat (5).

6. The dehumidification device for lithium chloride production according to claim 5, characterized in that: The dehumidifier (2) includes a cylindrical section and a conical section. The conical section is tapered from top to bottom. The receiving cavity (203) is provided with a radially arranged support plate (7) at the conical section. The support plate (7) is formed with an annular discharge port (8). The discharge port (205) is connected to the conical section.

7. The dehumidification device for lithium chloride production according to claim 6, characterized in that: The inner cylinder (202) is provided with a fluidizer (9) at the conical section. The fluidizer (9) is fixed to the dehumidification tank (2) by bolts and is located in the receiving cavity (203).

8. The dehumidification device for lithium chloride production according to claim 1, characterized in that: The feed inlet (204) is provided with a flow guide (10), and a transmission component (11) is provided between the dehumidification tank (2) and the centrifuge. The outlet of the transmission component (11) is located inside the flow guide (10).

9. The dehumidification device for lithium chloride production according to claim 8, characterized in that: The air guide shroud (10) is also provided with an upwardly protruding air outlet pipe (12).

10. The dehumidification device for lithium chloride production according to claim 6, characterized in that: The disc dryer (1) is provided with a bracket (13) for supporting the dehumidification tank (2), the conical section is connected to the bracket (13), and the inlet of the disc dryer (1) is connected to the outlet (205).

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