Efficient lithium sulfate crystal material drying and dewatering equipment

Abstract

This invention discloses a high-efficiency drying and dehydration device for lithium sulfate crystals, relating to the field of lithium sulfate crystal drying technology. It includes a cabinet and a connecting frame. The cabinet has a base plate inside, and a heating element is installed above the base plate. A feeding frame is provided on the surface of the heating element, and three sets of feeding frames are provided. One side of each feeding frame is equipped with a driving component for providing driving force. The driving component includes a gear disk, a half-tooth, a gear disk, a half-tooth, and a side-mounted rack. This high-efficiency drying and dehydration device for lithium sulfate crystals allows for the synchronous operation of the three feeding frames, along with a guiding component and a screening component. The drying and breaking operations of the feeding frames and the screening operations of the screening component are carried out simultaneously. After the feeding frames finish discharging material, new material to be dried can be immediately added without waiting for the screening operation to finish. This breaks the traditional step-by-step operation mode of drying, discharging, and screening in drying equipment, achieving continuous production and effectively improving the overall working efficiency of the equipment.

Description

Technical Field

[0001] This invention relates to the field of lithium sulfate crystallization drying technology, specifically to a high-efficiency drying and dehydration device for lithium sulfate crystals. Background Technology

[0002] With the rapid development of the new energy lithium battery industry, lithium sulfate, as a core raw material for lithium batteries, directly affects the performance of subsequent products due to the quality of its drying and dehydration. Excessive moisture content in the raw material can easily lead to imbalances in the ingredient ratios and damage to the crystal structure, resulting in problems such as shortened battery cycle life and decreased stability. Therefore, controlling the precision of the lithium sulfate drying process and achieving efficient and uniform dehydration are crucial steps in ensuring the quality and production stability of lithium battery cathode materials.

[0003] Currently, most lithium sulfate crystallization drying equipment used in the industry adopts traditional processes such as hot air drying and vacuum ovens, which have many shortcomings. The drying method is mostly external heat transfer, which easily leads to problems such as the material being dry on the outside but wet on the inside and uneven moisture content. In addition, lithium sulfate crystals are prone to agglomeration, which greatly reduces drying efficiency and quality. Furthermore, the equipment is mostly a step-by-step operation, with the drying and screening processes disconnected, making it impossible to achieve continuous production. At the same time, traditional equipment has high energy consumption and is cumbersome to maintain.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a high-efficiency drying and dehydration equipment for lithium sulfate crystals. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency drying and dehydration device for lithium sulfate crystals, solving the problems mentioned in the background section.

[0006] To achieve the above objective, the present invention is implemented through the following technical solution: an efficient drying and dewatering device for lithium sulfate crystalline materials, comprising a cabinet body and a connecting frame. A bottom plate is arranged inside the cabinet body, and a heating element is installed above the bottom plate. A material placing frame is arranged on the surface of the heating element, and there are three groups of said material placing frames. One side of one group of said material placing frames is provided with a driving component for providing driving force. Said driving component comprises a first gear disc, a first half gear, a second gear disc, a second half gear and a lateral rack, wherein the top of the first gear disc is fixedly provided with the first half gear through bolts, one side of said first half gear is engaged with the second gear disc, and the middle part of the second gear disc is fixedly provided with the second half gear through bolts. One side of said first half gear and said second half gear is engaged with the lateral rack, the connecting frame is fixedly arranged on one side of the lateral rack, and one side of said connecting frame is fixedly connected with the heating element. A worm wheel is installed at the bottom of said first gear disc, and one side of the worm wheel is engaged with a worm. A connecting rod is installed at one end of said worm, and a motor is arranged at the end of the connecting rod. There are two groups of said driving components, the two groups of said driving components are symmetrically distributed up and down with respect to the bottom plate. One side of the other group of said driving components is provided with a screening component for auxiliary screening, and the screening component comprises a bottom frame, a sliding plate, an internal screening frame and springs. The sliding plate is slidably installed at the bottom of said bottom frame, springs are arranged on both sides inside the bottom frame, and the internal screening frame is installed at the ends of said springs.

[0007] Further, a stand column is arranged on the outer surface of said bottom plate, a sliding block is fixedly installed inside said stand column, and connecting rods are installed at four corners of the bottom of said heating element.

[0008] Further, a connecting frame is fixedly installed on one side of said heating element, a stabilizing plate is arranged at the end of said connecting frame, a stabilizing plate is integrally installed on one side of said stabilizing plate, and a base is slidably arranged at the bottom of the stabilizing plate.

[0009] Further, a first high-temperature resistant silica gel plate is arranged inside said material placing frame, a second high-temperature resistant silica gel plate is installed on one side of said first high-temperature resistant silica gel plate, and said first high-temperature resistant silica gel plate and said second high-temperature resistant silica gel plate form a "square" shaped structure.

[0010] Further, a baffle is arranged on one side inside said material placing frame, a rotating shaft is rotatably installed inside said baffle, a return spring is fixedly arranged on the surface of one side of said baffle, and both ends of said rotating shaft are embedded inside the material placing frame.

[0011] Further, a pushing component for pushing materials is installed on the side inside said material placing frame away from the baffle, and the pushing component comprises an outer frame, a high-temperature resistant oil cylinder and a pushing plate. The high-temperature resistant oil cylinder is installed on one side of said outer frame, and the pushing plate is arranged at the output end of said high-temperature resistant oil cylinder.

[0012] Furthermore, a stirring assembly for assisting in the dispersion of lithium sulfate crystals during drying is provided on one side of the surface of the feeding frame. The stirring assembly includes a threaded connecting rod, a connecting gear, and a bottom rack. The connecting gear is fixedly installed on the outer surface of the threaded connecting rod, and the bottom rack is meshed on the outer surface of the connecting gear. A top plate is fixedly installed at one end of the threaded connecting rod, and the top of the top plate is fixedly connected to the cabinet.

[0013] Furthermore, a high-temperature resistant silicone plate II is threadedly mounted on the outer surface of the threaded connecting rod, and a guide rod is slidably mounted inside the high-temperature resistant silicone plate II.

[0014] Furthermore, a guiding component for assisting material guiding is provided on one side of the feeding frame, and the guiding component includes a guiding pipe, a branch pipe one, a branch pipe two, and a bottom pipe. A guiding pipe is installed on one side of the guiding pipe, and a branch pipe two is provided below the guiding pipe. A bottom pipe is provided below the branch pipe two, and the guiding pipe, branch pipe one, branch pipe two, and bottom pipe are interconnected.

[0015] Furthermore, a loading door panel is installed on the front side of the cabinet via hinges, and support plates are provided on both sides of the cabinet. A unloading area is installed at the bottom of the cabinet, and a threaded cap is provided at the bottom of the unloading area. A side frame is fixedly installed on one side of the cabinet.

[0016] This invention provides a high-efficiency drying and dehydration device for lithium sulfate crystals, which has the following beneficial effects: 1. This high-efficiency drying and dehydration equipment for lithium sulfate crystals utilizes a built-in heatable oil design in the heating element to achieve uniform heating of the material in the discharge frame. Combined with the coordinated operation of the drive and stirring components, the discharge frame moves back and forth, while the high-temperature resistant silicone plates one and two move left and right in a crisscross motion. This effectively breaks up material lumps and significantly increases the contact area between the material and the heating element. Simultaneously, the exhaust fan at the top of the cabinet promptly extracts water vapor, preventing moisture retention and subsequent re-dampening of the dried material. This dual action significantly improves drying and dehydration efficiency, ensuring uniform drying and achieving the required moisture content.

[0017] 2. This high-efficiency drying and dehydration equipment for lithium sulfate crystals features three sets of feeding frames with synchronous operation of guiding and screening components. The drying and crushing operations of the feeding frames and the screening operations of the screening components are carried out simultaneously. After the feeding frames finish feeding, new materials to be dried can be put in immediately without waiting for the screening operation to finish. This breaks the traditional step-by-step operation mode of drying, feeding and screening of drying equipment, realizes continuous production, effectively improves the overall working efficiency of the equipment and reduces labor waiting costs.

[0018] 3. This high-efficiency drying and dehydration equipment for lithium sulfate crystals uses a heating element connected by connecting rods at the four corners of the bottom, along with columns and sliders, to ensure stability during horizontal reciprocating movement. The screening component uses a spring and a bottom frame to achieve elastic vibration of the built-in screening frame, which not only improves screening efficiency but also automatically clears the mesh holes and reduces clogging. The linkage design between the pushing component and the baffle ensures smooth and residue-free material discharge.

[0019] 4. This high-efficiency drying and dehydration equipment for lithium sulfate crystals uses a drive component that, through the meshing of a motor, connecting rod, worm gear, and worm wheel, synchronously drives the heating element, discharge frame, and screening component. This achieves synchronized drying, crushing, and screening operations, preventing process disconnection. The linkage between the stirring component and the discharge frame, through the cooperation of a threaded connecting rod, connecting gear, and bottom rack, allows the high-temperature resistant silicone plate one and two to cross-move with the discharge frame, completely solving the problem of material agglomeration. The linkage between the pushing component and the baffle, combined with the diversion design of the guiding component, ensures smooth and unobstructed material discharge, avoiding the efficiency loss of independent operation of a single component. It also reduces problems such as material residue, uneven drying, and screening blockage, further improving the stability and continuity of equipment operation, while reducing the energy consumption and failure risk of individual component operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the cabinet of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 2 This is a schematic diagram of the overall external structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 3 This is a schematic diagram of the bottom plate connection distribution structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 4 This is a schematic diagram of the guiding component structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 5 This is a schematic diagram of the feeding frame connection structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 6 This is a schematic diagram of the screening component structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 7 This is a schematic diagram of the column connection structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 8 This is a schematic diagram of the baffle connection structure of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention; Figure 9 This is a schematic diagram of the bottom connection distribution structure of the base plate of a high-efficiency drying and dehydration device for lithium sulfate crystals according to the present invention.

[0021] In the diagram: 1. Cabinet body; 2. Side frame; 3. Base plate; 4. Unloading area; 5. Threaded cover; 6. Support plate; 7. Loading door panel; 8. Top plate; 9. Heating element; 10. Pushing assembly; 1001. Outer frame; 1002. High-temperature resistant hydraulic cylinder; 1003. Push plate; 11. Guiding assembly; 1101. Guide pipe; 1102. Branch pipe one; 1103. Branch pipe two; 1104. Bottom pipe; 12. Discharge frame; 13. End plate; 14. High-temperature resistant silicone plate one; 15. High-temperature resistant silicone plate two; 16. Baffle; 17. Mixing assembly; 1701. Threaded connecting rod; 1702. Connection Gear; 1703, Bottom rack; 18, Drive assembly; 1801, Gear disk one; 1802, Half gear one; 1803, Gear disk two; 1804, Half gear two; 1805, Side rack; 19, Motor; 20, Connecting rod; 21, Worm; 22, Worm wheel; 23, Connecting frame; 24, Screening assembly; 2401, Bottom frame; 2402, Slide plate; 2403, Internal screening frame; 2404, Spring; 25, Base; 26, Stabilizing plate; 27, Connecting frame; 28, Column; 29, Slider; 30, Rotating shaft; 31, Return spring; 32, Connecting rod; 33, Guide rod. Detailed Implementation

[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 9As shown, the present invention provides a technical solution: a high-efficiency drying and dehydration device for lithium sulfate crystals, comprising a cabinet 1, side frames 2, a bottom plate 3, a feeding area 4, a threaded cover 5, a support plate 6, a feeding door 7, a top fixing plate 8, a heating element 9, a pushing assembly 10, an outer frame 1001, a high-temperature resistant hydraulic cylinder 1002, a push plate 1003, a guiding assembly 11, a guiding pipe 1101, a branch pipe one 1102, a branch pipe two 1103, a bottom pipe 1104, a feeding frame 12, an end plate 13, a high-temperature resistant silicone plate one 14, a high-temperature resistant silicone plate two 15, a baffle 16, a stirring assembly 17, a threaded connecting rod 1701, a connecting gear 1702, a bottom-mounted rack 1703, a drive assembly 18, a gear disk one 1801, a half gear one 1802, and a gear disk. Components include: 1803 (two-tooth), 1804 (half-tooth), 1805 (side-mounted rack), 19 (motor), 20 (connecting rod), 21 (worm gear), 22 (worm wheel), 23 (connecting frame), 24 (screening assembly), 2401 (bottom frame), 2402 (slide plate), 2403 (built-in screening frame), 2404 (spring), 25 (base), 26 (stabilizing plate), 27 (connecting frame), 28 (column), 29 (slider), 30 (rotating shaft), 31 (reset spring), 32 (connecting rod), and 33 (guide rod). The cabinet 1 has a base plate 3 inside, with a heating element 9 installed above it. A connecting frame 27 is fixedly installed on one side of the heating element 9, and a stabilizing plate 26 is installed at the end of the connecting frame 27. A stabilizing plate 26 is integrally installed on one side of the stabilizing plate 26, and a base 25 is slidably mounted on the bottom of the stabilizing plate 26. The outer surface of element 3 is provided with a column 28, and a slider 29 is fixedly installed inside the column 28. Connecting rods 32 are installed at the four corners of the bottom of heating element 9. A feeding frame 12 is provided on the surface of heating element 9, and three sets of feeding frames 12 are provided. A guiding component 11 for assisting in material guiding is provided on one side of the feeding frame 12. The guiding component 11 includes a guiding pipe 1101, a first branch pipe 1102, a second branch pipe 1103, and a bottom pipe 1104. A guiding pipe 1101 is connected to one side of the guiding pipe 1101, and a second branch pipe 1103 is provided below the guiding pipe 1101. A bottom pipe 1104 is provided below the second branch pipe 1103. The guiding pipe 1101, the first branch pipe 1102, the second branch pipe 1103, and the bottom pipe 1104 are connected to each other. The components are interconnected. The guide pipe 1101 is internally connected to branch pipe 1102, branch pipe 1103, and bottom pipe 1104. The guide pipe 1101, branch pipe 1102, and branch pipe 1103 are respectively connected to three discharge frames 12, facilitating the introduction of dried lithium sulfate crystals into the screening component 24 via the guide pipe 1101, branch pipe 1102, branch pipe 1103, and bottom pipe 1104. A stirring component 17 is provided on one side of the discharge frame 12 to assist in dispersing the lithium sulfate crystals during drying. The stirring component 17 includes a threaded connecting rod 1701, a connecting gear 1702, and a bottom-mounted rack 1703. The connecting gear 1702 is fixedly installed on the outer surface of the threaded connecting rod 1701.A bottom rack 1703 is engaged and installed on the outer surface of the connecting gear 1702, a second high-temperature resistant silica gel plate 15 is threadedly installed on the outer surface of the threaded connecting rod 1701, a guide rod 33 is slidably installed inside the second high-temperature resistant silica gel plate 15, a top fixing plate 8 is fixedly installed at one end of the threaded connecting rod 1701, the top of the top fixing plate 8 is fixedly connected with the cabinet body 1, a first high-temperature resistant silica gel plate 14 is arranged inside the discharge frame 12, the second high-temperature resistant silica gel plate 15 is installed on one side of the first high-temperature resistant silica gel plate 14, and the first high-temperature resistant silica gel plate 14 and the second high-temperature resistant silica gel plate 15 form a "square"-shaped structure, a driving assembly 18 for providing driving force is arranged on one side of a group of discharge frames 12, the driving assembly 18 comprises a first gear plate 1801, a first half tooth 1802, a second gear plate 1803, a second half tooth 1804 and a side rack 1805, the first half tooth 1802 is fixedly installed on the top of the first gear plate 1801 through a bolt, the second gear plate 1803 is engaged and installed on one side of the first half tooth 1802, the second half tooth 1804 is fixedly arranged in the middle of the second gear plate 1803 through a bolt, the side rack 1805 is engaged and installed on one side of the first half tooth 1802 and the second half tooth 1804, a connecting frame 23 is fixedly arranged on one side of the side rack 1805, one side of the connecting frame 23 is fixedly connected with the heating element 9, a worm gear 22 is installed at the bottom of the first gear plate 1801, a worm 21 is engaged and arranged on one side of the worm gear 22, a connecting rod 20 is installed at one end of the worm 21, a motor 19 is arranged at the end of the connecting rod 20, two groups of driving assemblies 18 are installed, the two groups of driving assemblies 18 are symmetrically distributed vertically relative to the bottom plate 3, a screening assembly 24 for auxiliary screening is arranged on one side of the other group of driving assemblies 18, the screening assembly 24 comprises a bottom frame 2401, a sliding plate 2402, an internal screening frame 2403 and a spring 2404, the sliding plate 2402 is slidably installed at the bottom of the bottom frame 2401, the springs 2404 are arranged on both sides inside the bottom frame 2401, the internal screening frame 2403 is installed at the end of the spring 2404, through the design of the motor 19, the connecting rod 20 and the worm 21, the worm gear 22 can be driven to rotate, the worm gear 22 is connected with the first gear plate 1801, so that the first gear plate 1801 and the first half tooth 1802 rotate synchronously, the first gear plate 1801 is engaged with the second gear plate 1803, so that the second gear plate 1803 and the second half tooth 1804 rotate synchronously, through the positional distribution design of the first half tooth 1802 and the second half tooth 1804, the first half tooth 1802 and the second half tooth 1804 are alternately engaged with the side rack 1805 during operation, so that the connecting frame 23, the heating element 9 and the discharge frame 12 connected with the side rack 1805 can slide horizontally on the surface of the sliding block 29, through the horizontal reciprocating movement of the discharge frame 12, the lithium sulfate crystal material stored inside the discharge frame 12 can be assisted to break up, increasing the contact area between the lithium sulfate crystal material and the heating element 9, and improving the drying and dehydration effect, wherein during the horizontal reciprocating movement of the discharge frame 12,The threaded connecting rod 1701 and connecting gear 1702 on one side of the feeding frame 12 will rotate due to contact and meshing with the bottom rack 1703. This causes the high-temperature resistant silicone plates 14 and 15 on the surface of the threaded connecting rod 1701 to reciprocate left and right inside the feeding frame 12 using the guide rod 33. During the reciprocating movement of the feeding frame 12, the high-temperature resistant silicone plates 14 and 15 also reciprocate left and right, further dispersing and breaking down the lithium sulfate crystals, preventing clumping during drying. Additionally, the heating element 9 contains heatable oil, which is heated by a heating plate, thus drying and dehydrating the lithium sulfate crystals inside the feeding frame 12. After drying and dehydration, the material enters the screening component 24 through the guide assembly 11. This process is repeated as the feeding frame 12 reciprocates horizontally. During this process, the bottom frame 2401 can be driven to slide horizontally back and forth outside the slide plate 2402 using another set of drive components 18. During this sliding, the built-in screening frame 2403, connected by a spring 2404 inside the bottom frame 2401, will slide in conjunction with the uneven center of gravity of the bottom frame 2401, assisting in the screening of the dried lithium sulfate crystals in the built-in screening frame 2403. Simultaneously, it can also clear the mesh holes of the built-in screening frame 2403 through elastic vibration. The operation of the discharge frame 12 and the screening component 24 is synchronized, facilitating the addition of new lithium sulfate crystals to be dried after the discharge frame 12 has completely discharged. The dried lithium sulfate crystals can continue to operate in the screening component 24, and the screened lithium sulfate crystals enter the discharge area 4, where the user can collect them by opening the threaded cover 5.

[0024] like Figure 5 and Figure 8As shown, a baffle 16 is provided on one side of the inner side of the feeding frame 12, and a rotating shaft 30 is rotatably mounted inside the baffle 16. A return spring 31 is fixedly provided on one side surface of the baffle 16. The two ends of the rotating shaft 30 are embedded inside the feeding frame 12. A pushing assembly 10 for pushing materials is installed on the side of the inner side of the feeding frame 12 away from the baffle 16. The pushing assembly 10 includes an outer frame 1001, a high-temperature resistant hydraulic cylinder 1002, and a push plate 1003. A high-temperature resistant hydraulic cylinder 1002 is installed on one side of the outer frame 1001, and a push plate 1003 is provided at the output end of the high-temperature resistant hydraulic cylinder 1002. According to the pre-set... After the required drying time is reached, the controller can extend the high-temperature resistant cylinder 1002, which in turn drives the pusher plate 1003 to press against the surface of the feeding frame 12, pushing the dried lithium sulfate crystals into the guide assembly 11. During this process, the pusher plate 1003 presses against the baffle 16, causing the return spring 31 connected to the baffle 16 to contract. This causes the baffle 16 to rotate and tilt, facilitating the introduction of the lithium sulfate crystals into the guide tube 1101. The entire guide assembly 11 uses a high-temperature resistant flexible hose with sufficient space for material feeding.

[0025] like Figure 1 and Figure 2 As shown, a loading door panel 7 is installed on the front side of the cabinet 1 via a hinge, and support plates 6 are provided on both sides of the cabinet 1. A discharge area 4 is installed at the bottom of the cabinet 1, and a threaded cap 5 is provided at the bottom of the discharge area 4. A side frame 2 is fixedly installed on one side of the cabinet 1, and sealing silicone is provided on the edge of the loading door panel 7. The operator places the lithium sulfate crystal material to be dried into the discharge frame 12, and then closes the loading door panel 7 to seal the cabinet 1. In addition, an exhaust fan is connected to the top of the cabinet 1 through a moisture collection vent to forcibly extract the water vapor generated by the heating and evaporation of the lithium sulfate material from the inside of the equipment, so as to avoid the accumulation, retention, backflow and condensation of water vapor inside the equipment and prevent the dry material from absorbing moisture and returning to moisture.

[0026] In summary, as Figures 1-9As shown, when using the high-efficiency drying and dewatering equipment for lithium sulfate crystalline materials, a worker opens the feeding door panel mounted on the front side of the cabinet body through a hinge, and uniformly places the lithium sulfate crystalline materials to be dried in three groups of material placing frames above the bottom plate inside the cabinet body. After the placement is completed, the feeding door panel is closed. The sealing silica gel arranged at the edge of the feeding door panel can ensure that the cabinet body is in a closed state. Meanwhile, the induced draft fan connected to the top of the cabinet body through the moisture collecting air outlet is started to prepare for discharging water vapor in the subsequent drying process, so as to prevent water vapor from accumulating, staying and condensing backflow inside the cabinet body, and eliminate secondary moisture absorption and rewetting of dry materials. After the drying operation is started, the heating element starts to work: the inside of the heating element is a hollow structure, and heatable oil is stored inside. The internal oil is heated by a heating plate, and heat is transferred to the upper material placing frame through the heating element, so as to uniformly dry and dewater the lithium sulfate crystalline materials in the material placing frame, so as to realize the preliminary evaporation of moisture in the materials. The water vapor generated by evaporation is forcibly drawn out of the equipment from the moisture collecting air outlet by the induced draft fan, so as to ensure the dryness of the drying environment. During the drying process, the equipment completes material breaking and dispersing operation synchronously to avoid material caking from affecting the drying effect. This process is realized through the cooperative operation of the driving assembly and the stirring assembly: after the motor is started, it drives the connecting rod to rotate, the connecting rod drives the worm to rotate, the worm is in meshing transmission with the worm gear, and then drives the first gear disc connected to the worm gear to rotate, and the first half gear on the top of the first gear disc rotates together therewith. Since the first half gear is meshed with the second gear disc, the second gear disc and the second half gear in the middle thereof rotate synchronously. Through the position distribution design of the first half gear and the second half gear, the two mesh alternately with the lateral rack during operation, driving the lateral rack to perform horizontal reciprocating motion. The connecting frame fixed on one side of the lateral rack moves synchronously therewith, and then drives the heating element and the material placing frame fixedly connected with the connecting frame to perform horizontal reciprocating movement around the sliding block inside the stand column, and the heating element cooperates with the relevant structure through connecting rods at the four corners of the bottom to ensure the stability during horizontal reciprocating movement. During the horizontal reciprocating movement of the material placing frame, the stirring assembly on one side thereof plays a role synchronously: the material placing frame drives the threaded connecting rod and the connecting gear to move synchronously, the connecting gear continuously meshes with the fixedly arranged bottom rack, thereby driving the threaded connecting rod to rotate. The second high-temperature resistant silica gel plate threadedly mounted on the surface of the threaded connecting rod cannot rotate with the threaded connecting rod under the limiting effect of the guide rod, and can only perform left-right reciprocating movement along the guide rod. Since the first high-temperature resistant silica gel plate and the second high-temperature resistant silica gel plate form a square-frame-shaped structure, the first high-temperature resistant silica gel plate also performs left-right reciprocating movement together with the second high-temperature resistant silica gel plate.Ultimately, the feeding frame 12 moves back and forth, while the high-temperature resistant silicone plate 14 and the high-temperature resistant silicone plate 2 15 move left and right in a cross motion. This fully disperses and breaks up the lithium sulfate crystals in the feeding frame 12, completely preventing the material from clumping during the drying process. It also significantly increases the contact area between the material and the heating element 9, further improving the drying and dehydration efficiency and effect. Once the material has dried for the preset time, the pushing component 10 is activated, pushing the dried material to the guiding component 11. The controller controls the high-temperature resistant cylinder 1002 installed on the outer frame 1001 on one side of the feeding frame 12 to extend. The output end of the high-temperature resistant cylinder 1002 drives the push plate 1003 to move. The push plate 1003 slides against the inner wall of the feeding frame 12, pushing the dried lithium sulfate crystals towards the guiding component 11. During the pushing process, the push plate 1003 will abut against the baffle 16 inside the feeding frame 12, causing the return spring 31 connected to the baffle 16 to retract. The baffle 16 rotates and tilts around the rotating shaft 30 embedded inside the feeding frame 12, providing a channel for the material to be discharged, facilitating the smooth entry of the material into the guiding component 11. The guiding component 11 adopts a high-temperature resistant hose design and reserves sufficient material discharge space. One side of its guiding pipe 1101 is connected to branch pipe one 1102 and branch pipe two 1103, which correspond to three sets of material discharge frames 12 respectively. The material flows into the bottom pipe 1104 through the guiding pipe 1101, branch pipe one 1102 or branch pipe two 1103, and is finally introduced into the screening component 24. After the dried material enters the screening component 24, it is screened, and the screening mesh holes are self-drained at the same time. Another set of driving components 18, which is linked with the heating element 9, has the same structure as the drying driving component and is symmetrically distributed about the bottom plate 3. It operates synchronously and drives the bottom frame 2401 of the screening component 24 to slide horizontally back and forth on the slide plate 2402. Springs 2404, located on both sides of the bottom frame 2401, connect to the built-in screening frame 2403. During the back-and-forth sliding of the bottom frame 2401, the built-in screening frame 2403, due to uneven center of gravity during screening, vibrates elastically in conjunction with the sliding of the bottom frame 2401. This efficiently screens the dried lithium sulfate crystals, selecting materials that meet the requirements. Furthermore, the elastic vibration automatically clears the mesh holes of the built-in screening frame 2403, preventing clogging and ensuring efficient screening. After screening, the lithium sulfate crystals fall into the discharge area 4 at the bottom of the cabinet 1. Workers can collect the qualified dried materials by unscrewing the threaded cap 5 at the bottom of the discharge area 4. Throughout the entire process, the drying and breaking up of the discharge frame 12 and the screening operation of the screening component 24 are carried out synchronously. This allows for the immediate addition of new materials to be dried after the discharge frame 12 has finished discharging, enabling continuous operation, significantly improving equipment efficiency, and ensuring that the quality of the dried and dehydrated materials meets requirements.

[0027] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A lithium sulfate crystalline material high-efficiency drying and dewatering equipment, comprising a cabinet body (1) and a connecting frame (23), characterized in that: A bottom plate (3) is arranged inside the cabinet body (1), a heating element (9) is installed above the bottom plate (3), a material discharge frame (12) is arranged on the surface of the heating element (9), and three groups of the material discharge frames (12) are provided. One side of one group of the material discharge frames (12) is provided with a drive assembly (18) for providing driving force. The drive assembly (18) comprises a first gear disc (1801), a first half gear (1802), a second gear disc (1803), a second half gear (1804) and a side rack (1805), the first half gear (1802) is fixedly installed on the top of the first gear disc (1801) through a bolt, the second gear disc (1803) is engaged and installed on one side of the first half gear (1802), the second half gear (1804) is fixedly arranged in the middle of the second gear disc (1803) through a bolt, the side rack (1805) is engaged and installed on one side of the first half gear (1802) and the second half gear (1804), a connecting frame (23) is fixedly arranged on one side of the side rack (1805), one side of the connecting frame (23) is fixedly connected with the heating element (9), a worm gear (22) is installed at the bottom of the first gear disc (1801), a worm (21) is engaged and arranged on one side of the worm gear (22), a connecting rod (20) is installed at one end of the worm (21), a motor (19) is arranged at the end of the connecting rod (20), two groups of the drive assemblies (18) are provided, the two groups of drive assemblies (18) are vertically symmetrically distributed about the bottom plate (3), one side of the other group of the drive assemblies (18) is provided with a screening assembly (24) for auxiliary screening, the screening assembly (24) comprises a bottom frame (2401), a sliding plate (2402), an internal screening frame (2403) and springs (2404), the sliding plate (2402) is slidably installed at the bottom of the bottom frame (2401), the springs (2404) are arranged on both inner sides of the bottom frame (2401), and the internal screening frame (2403) is installed at the end of the springs (2404).

2. The high-efficiency drying and dewatering equipment for lithium sulfate crystal materials according to claim 1, characterized in that: A vertical column (28) is arranged on the outer surface of the bottom plate (3), a sliding block (29) is fixedly installed inside the vertical column (28), and connecting rods (32) are installed at four corners of the bottom of the heating element (9).

3. The lithium sulfate crystal material high-efficiency drying and dewatering equipment according to claim 1, characterized in that: An connecting frame (27) is fixedly installed on one side of the heating element (9), a stabilizing plate (26) is arranged at the end of the connecting frame (27), a stabilizing plate (26) is integrally installed on one side of the stabilizing plate (26), and a base (25) is slidably arranged at the bottom of the stabilizing plate (26).

4. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 1, characterized in that: A first high-temperature resistant silica gel plate (14) is arranged inside the material discharge frame (12), a second high-temperature resistant silica gel plate (15) is installed on one side of the first high-temperature resistant silica gel plate (14), and the first high-temperature resistant silica gel plate (14) and the second high-temperature resistant silica gel plate (15) form a "square"-shaped structure.

5. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 1, characterized in that: A baffle (16) is provided on one side of the inner side of the feeding frame (12), and a rotating shaft (30) is rotatably installed inside the baffle (16). A reset spring (31) is fixedly provided on one side surface of the baffle (16), and the two ends of the rotating shaft (30) are embedded inside the feeding frame (12).

6. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 5, characterized in that: The feeding frame (12) is equipped with a feeding assembly (10) for feeding on the side away from the baffle (16). The feeding assembly (10) includes an outer frame (1001), a high-temperature resistant cylinder (1002) and a push plate (1003). The high-temperature resistant cylinder (1002) is installed on one side of the outer frame (1001), and the output end of the high-temperature resistant cylinder (1002) is provided with a push plate (1003).

7. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 6, characterized in that: The feeding frame (12) is provided with a stirring component (17) on one side of its surface to assist in the dispersion of lithium sulfate crystals during drying. The stirring component (17) includes a threaded connecting rod (1701), a connecting gear (1702), and a bottom rack (1703). The connecting gear (1702) is fixedly installed on the outer surface of the threaded connecting rod (1701), and the bottom rack (1703) is meshed on the outer surface of the connecting gear (1702). A top plate (8) is fixedly installed at one end of the threaded connecting rod (1701), and the top of the top plate (8) is fixedly connected to the cabinet (1).

8. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 7, characterized in that: The outer surface of the threaded connecting rod (1701) is threaded with a high-temperature resistant silicone plate 2 (15), and a guide rod (33) is slidably installed inside the high-temperature resistant silicone plate 2 (15).

9. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 8, characterized in that: The feeding frame (12) is provided with a guide component (11) for assisting in guiding the material on one side. The guide component (11) includes a guide pipe (1101), a branch pipe one (1102), a branch pipe two (1103), and a bottom pipe (1104). The guide pipe (1101) is connected to one side of the guide pipe (1101), and a branch pipe two (1103) is provided below the guide pipe (1101). A bottom pipe (1104) is provided below the branch pipe two (1103), and the guide pipe (1101), branch pipe one (1102), branch pipe two (1103), and bottom pipe (1104) are interconnected.

10. The high-efficiency drying and dehydration equipment for lithium sulfate crystals according to claim 9, characterized in that: The cabinet (1) has a loading door panel (7) installed on the front side via a hinge, and support plates (6) are provided on both sides of the cabinet (1). The bottom of the cabinet (1) has a loading area (4), and a threaded cover (5) is provided at the bottom of the loading area (4). A side frame (2) is fixedly installed on one side of the cabinet (1).

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